alias.c (get_alias_set): Return a previously calculated alias set for a VAR_DECL.

[gcc.git] / gcc / ChangeLog

2001-08-07  Jason Merrill  <jason_merrill@redhat.com>

        * alias.c (get_alias_set): Return a previously calculated
        alias set for a VAR_DECL.

2001-08-06  Richard Henderson  <rth@redhat.com>

        * varasm.c (assemble_gc_entry): Remove.
        * output.h: Likewise.

2001-08-06  Richard Henderson  <rth@redhat.com>

        * varasm.c (assemble_constructor): Take a symbol_ref and a
        priority instead of a bare string.  Move priority handling
        here from cp/decl2.c.
        * output.h: Update decls.

        * c-decl.c (c_expand_body): Update calls to assemble_constructor
        and assemble_destructor.
        * profile.c (output_func_start_profiler): Likewise.
        * objc/objc-act.c (finish_objc): Likewise.
        (build_module_descriptor): Return the symbol not the symbol name.

2001-08-06  David Edelsohn  <edelsohn@gnu.org>

        * config/rs6000/darwin.h (DOUBLE_INT_ASM_OP): Add whitespace.
        * config/rs6000/linux64.h (RS6000_MCOUNT): Define.
        ({SAVE,RESTORE}_FP_{PREFFIX,SUFFIX}): Define.
        * config/rs6000/rs6000.h (ASM_OUTPUT_DOUBLE_INT): Remove whitespace.
        * config/rs6000/sysv4.h (DOUBLE_INT_ASM_OP): Add whitespace.
        * config/rs6000/xcoff.h (DOUBLE_INT_ASM_OP): Add whitespace.

2001-08-06  Neil Booth  <neil@daikokuya.demon.co.uk>

        * cpperror.c (print_containing_files): Moved to line-map.c.
        (print_location): line-map.c handles re-listing or otherwise.
        * cpphash.h (struct lexer_state): Remove next_bol.
        (struct cpp_buffer): Remove include_stack_listed.
        * cpplib.c (do_line, cpp_push_buffer, _cpp_pop_buffer):
        Remove faked buffer handling.
        (_cpp_do_file_change): Tweak.
        * cpplib.h (enum cpp_buffer_type): Remove BUF_FAKE.
        * cppmain.c (struct printer): Remove filename.
        (print_line, cb_file_change): Update accordingly.
        * line-map.c: Include intl.h.
        (init_line_maps): Initialize last_listed.
        (free_line_maps): Sanity check, warn if ENABLED_CHECKING.
        (add_line_map): Sanity check inputs, warn if ENABLED_CHECKING.
        (print_containing_files): New.
        * line-map.h (struct line_maps): New member last_listed.
        (print_containing_files, INCLUDED_FROM): New.
        * Makefile.in: Update.
        * po/POTFILES.in: Add line-map.c.

2001-08-06  Richard Henderson  <rth@redhat.com>

        * except.c (convert_from_eh_region_ranges_1): Never mark
        USE or CLOBBER insns as throwing.

        * expr.c (store_constructor): Don't clobber memory targets.

2001-08-06  Andreas Jaeger  <aj@suse.de>

        * profile.c (branch_prob): Remove unused variable insn.

        * Makefile.in (local-alloc.o): Add dependency on except.h.

        * local-alloc.c: Include except.h for can_throw_internal prototype.

2001-08-06  Richard Henderson  <rth@redhat.com>

        * config/i386/i386.h (FORCE_PREFERRED_STACK_BOUNDARY_IN_MAIN): New.
        * function.c (expand_main_function): Implement it.
        * doc/tm.texi: Document it.

2001-08-06  Stan Shebs  <shebs@apple.com>

        * doc/install.texi: Document powerpc-*-darwin* details.

2001-08-06  Daniel Berlin  <dan@cgsoftware.com>

        * config/rs6000/aix.h (CPP_CPU_SPEC): Move back to rs6000.h
        (ASM_CPU_SPEC): Move back to rs6000.h
        #undef CPP_DEFAULT_SPEC and ASM_DEFAULT_SPEC before redefining them.

        * config/rs6000/darwin.h (DOUBLE_INT_ASM_OP): New macro.

        * config/rs6000/linux.h: Remove vtable thunks stuff we accidently
        readded.

        * config/rs6000/linux64.h: Ditto.

        * config/rs6000/rs6000.h: Move CPP_CPU_SPEC and ASM_CPU_SPEC back
        to here. Define default ASM_DEFAULT_SPEC and CPP_DEFAULT SPEC to
        nothing.

        Remove accidently readded definitions of FUNCTION_PROLOGUE,
        FUNCTION_EPILOGUE,  ASM_OPEN_PAREN, ASM_CLOSE_PAREN

        * config/rs6000/sysv4.h: Move CPP_CPU_SPEC and ASM_CPU_SPEC back
        to rs6000.h

2001-08-05  Richard Henderson  <rth@redhat.com>

        * local-alloc.c (update_equiv_regs): Do not move insns that
        can throw.

2001-08-05  Jan Hubicka  <jh@suse.cz>

        * Makefile.in (reload1.o): Add dedendancy on except.h
        * basic-block.h (purge_all_dead_edges, purge_dead_edges): Update
        prototypes.
        * flow.c (purge_dead_edges, purge_all_dead_edges): Return bool
        indicating wehther edges has been cleaned up.
        * reload1.c: Inlucde except.h
        (fixup_abnormal_edges): Accept deleted insns.
        * toplev.c (rest_of_compilation): Purge dead edges unconditionally
        after combine.

2001-08-06  Neil Booth  <neil@daikokuya.demon.co.uk>

        * cpplib.c (do_line): Correct line number after pop_buffer.

2001-08-05  Neil Booth  <neil@daikokuya.demon.co.uk>

        PR preprocessor/3824
        * line-map.c: Update comments.
        * line-map.h: Update comments.
        * tradcif.y: Don't consider large numbers unsigned.

2001-08-05  Neil Booth  <neil@daikokuya.demon.co.uk>

        PR preprocessor/3081
        * c-lex.c (map): New.
        (cb_file_change): Update map and use it.
        (cb_def_pragma, cb_define, cb_undef): Use map and line.
        (c_lex): Update to use map.
        * cpperror.c (print_location): Move to using logical line numbers.
        * cppfiles.c (stack_include_file): Update for new _cpp_do_file_change.
        (cpp_make_system_header): Similarly.
        (_cpp_execute_include): Stop line numbering hacks.  Store the
        line we will return to.
        * cpphash.h (CPP_BUF_LINE): Remove.
        (struct cpp_buffer): Remove lineno and pseudo_newlines.
        Add map and return_to_line.
        (_cpp_do_file_change): Update.
        * cppinit.c (cpp_start_read): Update line kludge.
        * cpplex.c (handle_newline): Don't update lineno and pseudo_newlines.
        (trigraph_ok): Use logical line numbers for diagnostics.
        (skip_block_comment): Likewise.
        (skip_whitespace): Likewise.
        (skip_line_comment): Use pfile->line instead.
        (_cpp_lex_token): Update to use logical line numbering exclusively.
        Handle BOL locally.  Accept new lines in directives, but keep
        pfile->line decremented.  Diagnostics use logical lines.  Update
        directive handling.
        * cpplib.c (SEEN_EOL): New.
        (skip_rest_of_line, check_eol): Use it.
        (end_directive): Increase line number when accepting the newline
        at the end of a directive.
        (run_directive): Simplify.
        (do_line): Bad LC_LEAVEs become LC_RENAMEs.  Update.
        (_cpp_do_file_change): Update to take buffer line number as an
        argument, and store the current map in the cpp_reader.  Remove
        line number kludges.
        (_cpp_do__Pragma): Restore output position after a _Pragma.
        (cpp_push_buffer): Don't set output line or lineno.
        (_cpp_pop_buffer): Transfer more info from a faked buffer.
        Remove line kludge.  Set output_line.
        * cppmacro.c (builtin_macro): Update handling of __LINE__.
        (parse_arg): Use logical lines.
        (save_lookahead_token): Save EOFs too now.
        * cppmain.c (struct printer): Fix comments.
        (printer_init): Simplify, let caller do errors.
        (scan_translation_unit, check_multiline_token, dump_macro): Update.
        (maybe_print_line): Simplify.
        (print_line): Don't print a linemarker if -P.
        (cb_define, cb_undef, cb_def_pragma, cb_ident, cb_include): Update.
        (cb_file_change): Simplify.
        * line-map.h (LAST_SOURCE_LINE): Fix.
        (CURRENT_LINE_MAP): New.

2001-08-05  Bernd Schmidt  <bernds@redhat.com>

        * doloop.c (doloop_modify_runtime): Properly compute number of
        iterations if loop was unrolled.

        * alias.c (rtx_equal_for_memref_p): VALUEs are only identical
        if their CSELIB_VAL_PTRs are.

        * config/ia64/ia64.c (struct spill_fill_data): New member prev_insn.
        (setup_spill_pointers): Initialize it.
        (spill_restore_mem): Set it.
        (do_spill, do_restore): Use it to add REG_INC note.
        * config/ia64/ia64.md (movti_internal): Add REG_INC notes as needed.

        * config/ia64/ia64.c (ia64_sched_reorder): Defer scheduling of
        asms if other insns are available.

        * config/ia64/ia64.c (condop_operator): New predicate.
        * config/ia64/ia64.h (PREDICATE_CODES): Add it.
        * config/ia64/ia64.md (cond_opsi2_internal and splitters): New
        patterns.

        * expr.c (expand_expr, case COND_EXPR): Prefer working with a
        temporary register than directly using a MEM.

2001-08-04  Hans-Peter Nilsson  <hp@bitrange.com>

        * config/sh/sh.c (sh_asm_named_section): Fix typo in align
        parameter in last change.

2001-08-04  Zack Weinberg  <zackw@panix.com>

        * sparc.md: Don't use #if inside C test expression.

2001-08-04  Richard Henderson  <rth@redhat.com>

        * i386.c: Revert 07-30 ix86_output_main_function_alignment_hack.

2001-08-04  Neil Booth  <neil@daikokuya.demon.co.uk>

        * cpphash.h (struct cpp_reader): New member directive_line.
        * cpplib.h (struct cpp_callbacks): Update prototypes of callbacks.
        * cpplib.c (do_define, do_undef, do_ident, do_include_common,
        do_pragma): Pass line to callbacks.
        (start_directive): Record line of directive.
        * cppmain.c (cb_ident, cb_define, cb_undef, cb_def_pragma,
        cb_include): Similarly.
        * c-lex.c (cb_ident, cb_define, cb_undef, cb_def_pragma):
        Similarly.

2001-08-04  Hans-Peter Nilsson  <hp@bitrange.com>

        * config/d30v/d30v.h: Fix typo in start of UNIQUE_SECTION
        comment.

Sat Aug  4 13:51:36 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * loop.c (try_copy_prop); Kill invalidated REG_EQUAL notes.

        * reload1.c (fixup_abnormal_edges): New static function.
        (reload): Use it.

        * flow.c (need_fake_edge_p): New function.
        (flow_call_edges_add): Fix handling of noreturn and sibbling calls;
        avoid call insn to be very last insn in the insn stream.

        * profile.c (branch_prob): Call flow_call_edges_add instead of
        doing that by hand; cleanup cfg to re-merge basic blocks once
        we are done.

2001-08-04  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * Makefile.in (CPPLIB_H): New, so that dependencies on cpplib.h
        are also on line-map.h.
        * cppfiles.c (stack_include_file): Update.
        * cpphash.h (struct cpp_buffer): New member return_at_eof.
        (_cpp_pop_buffer): New.
        * cppinit.c (cpp_destroy, cpp_finish): Update.
        (do_includes): Mark each buffer to return at EOF.
        * cpplex.c (_cpp_lex_token): Pop buffers at EOF.  Continue or
        return as requested.
        * cpplib.c (run_directive, do_line, cpp_push_buffer): Update.
        (cpp_pop_buffer): Rename _cpp_pop_buffer.  Stop skipping.
        * cpplib.h (cpp_pop_buffer): Remove.
        (cpp_scan_buffer_nooutput): Rename cpp_scan_nooutput.
        * cppmacro.c (cpp_scan_buffer_nooutput): Similarly.  No need to pop
        buffers.
        * cppmain.c (scan_buffer): Rename scan_translation_unit.  No need
        to pop buffers.
        (do_preprocessing): Update.
        * fix-header.c (read_scan_file): Update.  No need to pop buffers.
        * c-parse.in (_yylex): Similarly.
        * scan-decls.c (scan_decls): Similarly.
        * line-map.h: Update comments.

        * objc/Make-lang.in (objc-act.o): Update dependencies.

2001-08-04  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.md ("cmphi_1", "cmpqi_1"): Allow memory
        and soft register for operand 0.
        ("cmphi_z_used", "cmpqi_z_used"): Allow memory for operand 0.

2001-08-04  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.md ("bitcmpqi"): Allow memory and soft
        register for operand 0.
        ("bitcmpqi_z_used"): Allow memory for operand 0.
        (split "bitcmpqi"): New split to handle address reg as operand 1.

2001-08-04  Andreas Jaeger  <aj@suse.de>

        * gcse.c: Revert Daniel's last patch.

2001-08-03  Zack Weinberg  <zackw@stanford.edu>

        * sparc-protos.h: Add prototypes for fp_zero_operand and
        reg_or_0_operand.
        * sh-protos.h: Add prototype for fpul_operand.

2001-08-04  Hans-Peter Nilsson  <hp@bitrange.com>

        * doc/extend.texi (Other Builtins): Fix typo in last change.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * target.h (gcc_target): Add asm_out.named_section,
        section_type_flags, have_named_sections.
        * target-def.h (TARGET_ASM_NAMED_SECTION): New.
        (TARGET_HAVE_NAMED_SECTIONS): New.
        (TARGET_SECTION_TYPE_FLAGS): New.

        * Makefile.in (toplev.o): Depend on TARGET_H.
        (varasm.o, dbxout.o): Likewise.
        * c-common.c (decl_attributes): Check targetm.have_named_sections
        instead of ifdef ASM_OUTPUT_SECTION_NAME.
        * dbxout.c (dbxout_function_decl): Likewise.
        (dbxout_function_end): Likewise.
        * toplev.c (compile_file): Likewise.
        * varasm.c (exception_section): Likewise.
        * cp/decl2.c (finish_objects): Likewise.

        * defaults.h (EH_FRAME_SECTION): Remove.
        (EH_FRAME_SECTION_ASM_OP): Remove.
        (EH_FRAME_SECTION_NAME): New.
        (UNIQUE_SECTION): Don't depend on ASM_OUTPUT_SECTION_NAME.
        (UNIQUE_SECTION_P): Remove.
        * dwarf2out.c (SECTION_FORMAT): Remove.
        (ASM_OUTPUT_SECTION): Remove.
        (output_call_frame_info): Use named_section_flags.
        (output_comp_unit, dwarf2out_start_source_file): Likewise.
        (dwarf2out_end_source_file, dwarf2out_define): Likewise.
        (dwarf2out_undef, dwarf2out_init, dwarf2out_finish): Likewise.
        * varasm.c (in_eh_frame, eh_frame_section): Remove.
        (named_section_flags): New.
        (named_section): Use it and targetm.section_type_flags.
        (resolve_unique_section): New.
        (assemble_start_function): Use it.
        (asm_emit_uninitialised, assemble_variable): Likewise.
        (default_section_type_flags): New.
        (default_no_named_section, default_elf_asm_named_section): New.
        (default_coff_asm_named_section, default_pe_asm_named_section): New.
        * output.h: Update varasm.c decls.
        (SECTION_*): New flags.

        * crtstuff.c: Check EH_FRAME_SECTION_NAME not EH_FRAME_SECTION_ASM_OP.
        (__EH_FRAME_BEGIN__, __FRAME_END__): Use attribute section.

        * config/elfos.h (UNIQUE_SECTION_P): Remove.
        * config/alpha/elf.h, config/arm/linux-elf.h: Likewise.
        * config/arm/pe.h, config/arm/unknown-elf.h: Likewise.
        * config/i386/cygwin.h, config/i386/djgpp.h: Likewise.
        * config/i386/i386-interix.h, config/i386/win32.h: Likewise.
        * config/ia64/sysv4.h, config/mcore/mcore-pe.h: Likewise.
        * config/mips/elf.h, config/mips/elf64.h: Likewise.
        * config/mips/iris6gld.h, config/mips/mips.h: Likewise.
        * config/pa/pa64-hpux.h,

        * config/elfos.h (ASM_OUTPUT_SECTION_NAME): Remove.
        (TARGET_ASM_NAMED_SECTION): New.
        * config/psos.h, config/a29k/a29k.h, config/alpha/elf.h: Likewise.
        * config/alpha/vms.h, config/arm/coff.h: Likewise.
        * config/arm/conix-elf.h, config/arm/elf.h: Likewise.
        * config/arm/linux-elf.h, config/arm/pe.h: Likewise.
        * config/arm/unknown-elf.h, config/avr/avr.h: Likewise.
        * config/c4x/c4x.h, config/h8300/h8300.h: Likewise.
        * config/i386/cygwin.h, config/i386/djgpp.h: Likewise.
        * config/i386/i386-interix.h, config/i386/i386elf.h : Likewise.
        * config/i386/sco5.h, config/i386/win32.h: Likewise.
        * config/m68k/coff.h, config/mcore/mcore-pe.h: Likewise.
        * config/mcore/mcore.h, config/mips/elf.h: Likewise.
        * config/mips/elf64.h, config/mips/iris6.h: Likewise.
        * config/mips/netbsd.h, config/mips/openbsd.h: Likewise.
        * config/pa/pa64-hpux.h, config/rs6000/sysv4.h: Likewise.
        * config/rs6000/xcoff.h, config/sh/sh.h: Likewise.
        * config/sparc/sysv4.h: Likewise.

        * config/nextstep.h: Error until named sections implemented.

        * config/a29k/a29k.c (a29k_asm_named_section): New.
        * config/alpha/alpha.c (SECTION_VMS_OVERLAY): New.
        (vms_section_type_flags, vms_asm_named_section): New.
        * config/arm/arm.c (arm_elf_asm_named_section): New.
        * config/avr/avr.c (asm_output_section_name): Remove.
        * config/avr/avr-protos.h: Update.
        * config/c4x/c4x.c (c4x_asm_named_section): New.
        * config/h8300/h8300.c (h8300_asm_named_section): New.
        * config/i386/i386.c (sco_asm_named_section): New.
        * config/i386/winnt.c (SECTION_PE_SHARED): New.
        (i386_pe_section_type_flags): New.
        (i386_pe_asm_named_section): New.
        * config/i386/i386-protos.h: Update.
        * config/m68k/m68k.c (m68k_coff_asm_named_section): New.
        * config/mcore/mcore.c (mcore_asm_named_section): New.
        * config/mips/mips.c (iris6_asm_named_section): New.
        * config/mips/mips.h (ENCODE_SECTION_INFO): Use DECL_ONE_ONLY
        instead of UNIQUE_SECTION_P.
        * config/rs6000/rs6000.c (rs6000_elf_section_type_flags): New.
        (xcoff_asm_named_section): New.
        * config/sh/sh.c (sh_asm_named_section): New.
        * config/sparc/sparc.c (sparc_elf_asm_named_section): New.

        * config/i386/djgpp.h (EH_FRAME_SECTION_ASM_OP): Remove.
        * config/i386/sco5.h (EH_FRAME_SECTION_ASM_OP*): Remove.
        (EH_FRAME_SECTION_NAME): New.
        (EXCEPTION_SECTION): New.
        * config/ia64/ia64.h (EH_FRAME_SECTION_ASM_OP): Remove.
        (DEBUG_*_SECTION): Remove.
        * config/m68k/rtemself.h (EH_FRAME_SECTION_ASM_OP): Remove.
        * config/mips/iris6.h (DEBUG_*_SECTION): Remove.
        (EH_FRAME_SECTION_ASM_OP): Remove.

        * doc/tm.texi (UNIQUE_SECTION_P): Remove.
        (ASM_OUTPUT_SECTION_NAME): Remove.
        (TARGET_ASM_NAMED_SECTION): New.
        (TARGET_HAVE_NAMED_SECTIONS): New.
        (TARGET_SECTION_TYPE_FLAGS): New.
        (EH_FRAME_SECTION_ASM_OP): Remove.
        (EH_FRAME_SECTION_NAME): New.

2001-08-03  Zack Weinberg  <zackw@stanford.edu>

        * builtins.c (fold_builtin_constant_p): Return integer_zero_node
        for complex expressions when cfun == 0.
        * doc/extend.texi: Document that __builtin_constant_p can be
        used in data initializers as well as functions.

2001-08-03  Alexandre Oliva  <aoliva@redhat.com>

        * config/mn10300/mn10300.h (CONDITIONAL_REGISTER_USAGE): Declare
        variable I locally, instead of expecting a declaration in the
        calling context.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * except.c (collect_one_action_chain): Add an explicit cleanup
        action if regions surrounding a catch were encoded entirely
        within the call-site entry.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * dbxout.c (dbxout_symbol_location): Flatten subregs first;
        don't take REGNO of a non-register.

2001-08-03  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * gthr-dce.h (__GTHREAD_MUTEX_INIT_FUNCTION and
        __GTHREAD_MUTEX_INIT_DEFAULT): New macros for mutex initialization.
        (__gthread_key_delete): Remove code for __PTHREAD_LIBRARY_VERSION_1 >= 1
        (__gthread_mutex_init_function): New function for mutex initialization.

2001-08-03  Daniel Berlin  <dan@cgsoftware.com>

        * Makefile.in: Revert screwed up commit.

2001-08-03  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/t-m68hc11-gas (T_CPPFLAGS): Add _ctor and _dtor.
        * config/m68hc11/larith.asm (_exit): Split in several sub-sections
        merged by linker script to get a final _exit().
        (__do_global_dtors): New for destructor handling in specific exit
        section.
        (__do_global_ctors): New for constructors in specific install section.
        (__map_data_section): Map data sections before running constructors.
        * config/m68hc11/m68hc11.h (INT_ASM_OP): Define to use .word.
        (CTORS_SECTION_ASM_OP): Define to put in readonly section.
        (DTORS_SECTION_ASM_OP): Likewise.
        (CTORS_SECTION_FUNCTION): Define to force a reference to
        __do_global_ctors.
        (DTORS_SECTION_FUNCTION): Likewise for __do_global_dtors.

2001-08-03  Daniel Berlin  <dan@cgsoftware.com>

        * ChangeLog: Fix date on previous ChangeLog entry for GCSE.

        * Makefile.in: Add df.h to gcse.c dependencies.

2001-08-03  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * varasm.c (output_constant_def_contents): Use for the length of a
        string constant either its TREE_STRING_LENGTH or its int_size_in_bytes
        depending on which is larger.

2001-08-03  Daniel Berlin  <dan@cgsoftware.com>

        * gcse.c: Include df.h for use as a dataflow analyzer.
        Remove regvec.
        Declaration of reg_set_info: gone.
        New df_analyzer variable used by store motion.
        (reg_set_info): Deleted.
        (mark_mem_regs): New function, analyze regs used by a mem.
        (store_ops_ok): Use dataflow analyzer results to determine if
        necessary regs are changed in the block.
        (find_moveable_store): Remove check for symbol ref, we can handle
        much more complex expressions now.
        (compute_store_table): Remove most of the code, it's unnecessary
        now that the dataflow analyzer records the info for us.
        (store_killed_after): Add parameter to say whether to do the
        store_ops_okay test, used to speed up testing when we already know
        the answer, and just want to know if the store itself was killed.
        (build_store_vector): Largely rewritten to calculate the various
        vectors properly, and somewhat optimized.
        (store_motion): Init the df_analyzer, get REG_DEF chains.
        Also handle trapping expressions (since mems almost always trap)
        (simple_mem): Redefine what a simple mem is.

2001-08-03  DJ Delorie  <dj@redhat.com>

        * ifcvt.c (noce_get_alt_condition): Don't make an auxiliary
        set from a constant part of the condition.

2001-08-01  Andrew Cagney  <ac131313@redhat.com>

        * mkdeps.c (deps_add_default_target): Make local variable
        ``start'' a const char pointer.
        * dwarf2out.c (compute_section_prefix): Localize use of ``p''.

2001-08-03  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * doc/install.texi (Configuration): Fix markup.
        (Specific, i?86-*-udk): Likewise.
        (Specific, alpha*-dec-osf*): Warn against --with-gnu-as,
        --with-gnu-ld.
        Document --enable-threads and --enable-libgcj status.
        (Specific, mips-sgi-irix*): Canonicalize triples.
        (Specific, mips-sgi-irix5): Warn about problems with this config.
        Mention required GNU as patch.
        Native assembler problems are fixed.
        (Specific, mips-sgi-irix6): Update O32 ABI support status.
        Document --enable-threads and --enable-libgcj status.

2001-08-02  Nick Clifton  <nickc@cambridge.redhat.com>

        * Makefile.in, mklibgcc.in: Restore changes with fixed invocation
        of mkinstalldirs.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * config/ia64/sysv4.h (ASM_OUTPUT_LABELREF): Don't write to
        constant data.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * rtlanal.c (find_first_parameter_load): Stop if we
        reach a CODE_LABEL at BOUNDARY.

2001-08-03  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.md (force_movdi): New insn.
        * config/alpha/alpha.c (alpha_expand_prologue): Use it.
        Tweek FRP marking of VMS prologue insns.
        * config/alpha/vms.h (EPILOGUE_USES): New.

2001-08-02  Richard Henderson  <rth@redhat.com>

        * Makefile.in, mklibgcc.in: Revert mkinstalldirs change.

2001-08-02  Lars Brinkhoff  <lars@nocrew.org>

        * combine.c, config.gcc, cse.c, defaults.h, real.c, reload.c,
        simplify-rtx.c, config/alpha/alpha.h, config/avr/avr.h,
        config/convex/convex.h, config/d30v/d30v.c,
        config/d30v/d30v.h, config/dsp16xx/dsp16xx.h,
        config/elxsi/elxsi.h, config/fr30/fr30.h, config/m88k/m88k.c,
        config/mips/mips.h, config/mn10200/mn10200.h,
        config/mn10300/mn10300.h, config/pdp11/pdp11.md,
        config/v850/v850.h, config/vax/openbsd.h,
        config/vax/openbsd1.h, config/vax/ultrix.h,
        config/vax/vax-protos.h, config/vax/vax.c, config/vax/vax.h,
        config/vax/vax.md, config/vax/vaxv.h, config/vax/xm-vms.h,
        cp/decl2.c, doc/contrib.texi, doc/cpp.texi, doc/gcc.texi,
        doc/install.texi, doc/invoke.texi, doc/md.texi, doc/rtl.texi,
        doc/tm.texi: consistently use "VAX", "VAXen", and "MicroVAX"
        in comments and documentation.

2001-08-03  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * line-map.c: New.
        * line-map.h: New.
        * Makefile.in (line-map.o): New.
        (LIBCPP_OBJS, LIBCPP_DEPS): Update.
        * c-lex.c (cb_file_change): Update for new cpp_file_change structure.
        * cpperror.c (print_containing_files): Similarly.
        (print_location): Update.  Don't output a space before _Pragma.
        * cppfiles.c (stack_include_file): Set to line 1 immediately.
        (stack_include_filee, cpp_make_system_header): Update.
        (_cpp_execute_include): Get logical line number right for calling
        as-yet-unterminated #include.
        * cpphash.h (struct cpp_reader): Add line_maps.
        (_cpp_do_file_change): Update.
        * cppinit.c (cpp_create_reader): Initialize line maps.
        (cpp_destroy): Destroy line maps.
        (cpp_start_read): Get logical line number right.
        * cpplex.c (parse_string): Only warn once for multi-line strings.
        Use boolean variable for null warning.
        * cpplib.c (_cpp_handle_directive): End the directive if it isn't
        already.
        (do_include_common): End the directive early.
        (do_line): Don't warn about out-of-range lines in preprocessed
        source.  Update.  Remove unused variables.
        (_cpp_do_file_change): Update for new line mapping.
        (pragma_cb): New typedef.
        (cpp_register_pragma): Stop looking ahead before calling the
        handler.  Clean up.
        (do_pragma_system_header): End directive early.
        (cpp_get_line_maps): New.
        (cpp_pop_buffer): Fudge logical line.  Update.
        * cpplib.h: Include line-map.h
        (enum cpp_fc_reason): Remove.
        (struct cpp_file_change): Update.
        (cpp_get_line_maps): New.
        * cppmain.c (struct_printer): New member map.
        (cb_file_change): Update for new mappings.
        * fix-header.c (cb_file_change): Similarly.

2001-08-02  Nick Clifton  <nickc@cambridge.redhat.com>

        * Makefile.in (libgcc.mk): Define mkinstalldirs.
        * mklibgcc.in: Use mkinstalldirs instead of mkdir.

2001-08-02  Lars Brinkhoff  <lars@nocrew.org>

        * config/vax/vax.c: include expr.h.

2001-08-02  Nick Clifton  <nickc@cambridge.redhat.com>

        * Makefile.in ($(srcdir)/configure): Only rebuild in
        maintainer mode.
        ($(srcdir)/config.in): Only define in maintainer mode.
        ($(srcdir)/cstamp-h.in): Only define in maintainer mode.

2001-08-02  David Edelsohn  <edelsohn@gnu.org>

        * doc/install.texi (Install GCC: Binaries): Update Bull info.

2001-08-02  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * gcc.c (set_collect_gcc_options): New function, split out from
        main.
        Ignore elided switches.
        (do_spec_1): Invoke before executing command.
        (set_input): Export.
        Move declaration ...
        * gcc.h (set_input): ... here.
        * config/alpha/osf.h (ASM_FINAL_SPEC): Use %U.s to refer to input
        file.

2001-08-02  Nathan Sidwell  <nathan@codesourcery.com>

        Kill -fhonor-std.
        * doc/c-tree.texi (Namespaces): Remove std & -fhonor-std
        interaction.
        * doc/invoke.texi (C++ Dialect Options): Remove -fno-honor-std.

2001-08-02  Richard Sandiford  <rsandifo@redhat.com>

        * mips.md (movdicc): Make conditional on TARGET_64BIT.  Likewise
        for the unnamed instructions it expands to.

2001-08-02  Richard Henderson  <rth@redhat.com>

        * regclass.c (call_really_used_regs): Conditionally define.
        (init_reg_sets_1): Don't use it if not defined.
        (fix_register): Similarly, don't set it.

2001-08-01  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * params.def (PARAM_MAX_INLINE_INSNS): Change default to 600.
        Correct comment that had been missed in the previous change.

2001-08-01  Stan Shebs  <shebs@apple.com>

        * config/darwin.c (machopic_stub_name): Try matching by name.
        (update_stubs): New function.
        (darwin_encode_section_info):  Call it and update_non_lazy_ptrs
        unconditionally.

2001-08-01  Richard Henderson  <rth@redhat.com>

        * except.c (output_function_exception_table): Use assemble_align.
        * varasm.c (assemble_eh_label): Remove.
        (assemble_eh_align, assemble_eh_integer): Remove.

2001-08-01  Robert Lipe  <robertl@caldera.com>

        * dwarfout.c: Remove reference to README.DWARF.

2001-08-01  Andrew MacLeod  <amacleod@redhat.com>

        * regclass.c (call_really_used_regs): New array for registers which
        are actually used by a call.
        (init_reg_sets_1): Initialize regs_invalidated_by_call with the
        new array.
        (fix_register): Set call_really_used too.
        * config/ia64/ia64.h (CALL_REALLY_USED_REGISTERS): Initialize.
        * doc/tm.texi (CALL_REALLY_USED_REGISTERS): Document.

2001-08-01  Richard Henderson  <rth@redhat.com>

        * read-rtl.c (read_name): Consider \r whitespace.

2001-07-11  Andrew Cagney  <ac131313@redhat.com>

        * config.gcc: Recognize powerpc-*-netbsd*.

        * doc/install.texi (Host/target specific installation notes for
        GCC): Mention powerpc-*-netbsd*.

        * config/rs6000/netbsd.h: New file.
        (STANDARD_STARTFILE_PREFIX, LINK_SHLIB_SPEC): Redefine.
        (LIB_DEFAULT_SPEC, STARTFILE_DEFAULT_SPEC): Redefine.
        (ENDFILE_DEFAULT_SPEC, LINK_START_DEFAULT_SPEC): Redefine.
        (LINK_OS_DEFAULT_SPEC, CPP_OS_DEFAULT_SPEC): Redefine.
        (TARGET_VERSION): Redefine.

        * config/rs6000/t-ppccomm (MULTILIB_MATCHES_SYSV): Recognize
        mcall-netbsd as a match for mcall-sysv.
        (EXTRA_MULTILIB_PARTS): Add ncrti$(objext) and ncrtn$(objext).
        (ncrti.S, ncrtn.S): New targets.
        ($(T)ncrti$(objext), $(T)ncrtn$(objext)): New targets.

        * config/rs6000/sysv4.h (SUBTARGET_OVERRIDE_OPTIONS): Recognize
        "netbsd' as a V4 ABI.
        (ASM_SPEC): Check for -mcall-netbsd.
        (CC1_SPEC, CC1_SPEC, LINK_START_SPEC, LINK_OS_SPEC): Ditto.
        (CPP_ENDIAN_SPEC, CPP_SPEC, STARTFILE_SPEC): Ditto.
        (LIB_SPEC, ENDFILE_SPEC): Ditto.
        (LIB_NETBSD_SPEC, STARTFILE_NETBSD_SPEC): Define.
        (ENDFILE_NETBSD_SPEC, LINK_START_NETBSD_SPEC): Define.
        (LINK_OS_NETBSD_SPEC, CPP_OS_NETBSD_SPEC): Define.
        (SUBTARGET_EXTRA_SPECS): Add NetBSD specs.

        * doc/invoke.texi (Option Summary): Add -mcall-netbsd.
        (RS/6000 and PowerPC Options): Mention -mcall-netbsd.

2001-08-01  Mark Kettenis  <kettenis@gnu.org>

        * unwind-pe.h (base_of_encoded_value, read_encoded_value): Define
        only if NO_BASE_OF_ENCODED_VALUE isn't defined.
        * unwind-dw2-fde.c (NO_BASE_OF_ENCODED_VALUE): Define before
        including "unwind-pe.h".

Wed Aug  1 20:01:42 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * rs6000.md (define_splits): Kill unused constraints.

Wed Aug  1 20:02:12 CEST 2001 Graham Stott  <grahams@redhat.com>
                              Jan Hubicka  <jh@suse.cz>

        * function.c (thread_prologue_and_epilogue_insns): Kill code
        dealing with non-existent CFG.

2001-08-01  Kazu Hirata  <kazu@hxi.com>

        * alias.c: Fix comment formatting.
        * bitmap.c: Likewise.
        * builtins.c: Likewise.
        * calls.c: Likewise.
        * c-common.c: Likewise.
        * c-decl.c: Likewise.
        * c-dump.c: Likewise.
        * c-lex.c: Likewise.
        * collect2.c: Likewise.
        * combine.c: Likewise.
        * conflict.c: Likewise.
        * cppfiles.c: Likewise.
        * cppinit.c: Likewise.
        * cpplex.c: Likewise.
        * cpplib.c: Likewise.
        * cppmacro.c: Likewise.
        * cppspec.c: Likewise.
        * c-pragma.c: Likewise.
        * crtstuff.c: Likewise.
        * cse.c: Likewise.
        * cselib.c: Likewise.
        * c-semantics.c: Likewise.
        * c-typeck.c: Likewise.

2001-08-01  H.J. Lu <hjl@gnu.org>

        * config/mips/linux.h (ASM_OUTPUT_IDENT): Defined.

2001-08-01  H.J. Lu <hjl@gnu.org>

        * gcc/config/mips/linux.h (ASM_OUTPUT_SOURCE_LINE): Defined.

2001-08-01  Ziemowit Laski  <zlaski@apple.com>

        * c-parse.in (OBJC_NEED_RAW_IDENTIFIER): Define macro and flag for
        contextualizing Objective-C class name lookup by the lexer.
        (typespec_reserved_nonattr): Disable ObjC class name lookup after
        seeing a TYPESPEC.
        (protocoldef): Add support for forward @protocol declarations.
        (yylexname): Suppress ObjC class name lookup in certain contexts;
        re-enable after lookup is complete.
        (_yylex): Re-enable ObjC class name lookup when certain
        punctuation marks are seen.

        * objc/objc-act.c (check_protocol_recursively): New function used
        for finding circular dependencies in protocols.
        (objc_declare_protocols): New function for handling forward
        @protocol declarations.
        (receiver_is_class_object): Detect the case when 'self' is used
        inside of a class method.
        (build_message_expr): Issue a warning if class method is desired
        but instance method is found instead.
        (conforms_to_protocol): Streamline.
        (objc_comptypes): Detect the fact that 'Bar<Foo> foo' conforms to
        protocol Foo, even if 'Bar foo' does not.
        (check_protocols): Streamline.
        (start_protocol): Add checks for circular and duplicate protocol
        definitions.
        (encode_aggregate_within): For typedefs of structs, encode the
        underlying struct.
        * objc/objc-act.h (PROTOCOL_DEFINED): New tree accessor.
        (objc_declare_protocols): New prototype.

2001-08-01  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * cpphash.h (struct cpp_reader): New members line, pseudo_newlines.
        * cpplex.c (handle_newline): Update prototype.  Maintain logical
        line number.
        (skip_escaped_newlines, skip_block_comment, parse_string):
        Update accordingly.
        (_cpp_lex_token): Update, and store token position within the token.
        * cpplib.h (struct cpp_token): Add line and column entries.
        * cppmacro.c (replace_args): Position stringified tokens correctly.

2001-08-01  Andreas Jaeger  <aj@suse.de>

        * basic-block.h: Add prototype for last_loop_beg_note.

2001-07-31  Alexandre Petit-Bianco  <apbianco@redhat.com>

        * expr.c (safe_from_p): Use WITH_CLEANUP_EXPR_RTL instead of
        RTL_EXPR_RTL while handling WITH_CLEANUP_EXPR nodes. Fixed typo in
        comment.
        (expand_expr): Use WITH_CLEANUP_EXPR_RTL instead of RTL_EXPR_RTL
        while handling WITH_CLEANUP_EXPR node. Use second operand calling
        expand_decl_cleanup.
        * tree.c (firt_rtl_op): The third operand of WITH_CLEANUP_EXPR is
        the first RTX.
        (simple_cst_equal): WITH_CLEANUP_EXPR node to use its second
        operand while calling simple_cst_equal.
        * tree.def (WITH_CLEANUP_EXPR): Switched operands: the second
        operand is the cleanup expression, the third is the RTL_EXPR.
        * tree.h (WITH_CLEANUP_EXPR_RTL): New macro.

2001-07-31  Jeff Sturm  <jsturm@one-point.com>

        * except.c (duplicate_eh_regions): Test n_array[i] for NULL.

2001-07-31  matthew green  <mrg@eterna.com.au>

        * config.gcc (i386-*-netbsdelf): New description.
        * config/i386/netbsd-elf.h: New file.

2001-07-30  Geoffrey Keating  <geoffk@redhat.com>

        * loop.c (check_dbra_loop): Use single_set to compute
        jump_label.

2001-07-31  Daniel Berlin  <dan@cgsoftware.com>

        PowerPC reorg and support for powerpc64-*-linux*.

        Also fixes emitting of constants on 32 bit and 64 bit
        platforms.

        * config.gcc: powerpc64-*-linux* is a new target.
        Things that needed aix.h now also include xcoff.h

        * config/rs6000/rs6000.h: Split XCOFF specific stuff into
        xcoff.h.
        Move AIX specific stuff into aix.h.
        (TARGET_AIX): Renamed to TARGET_XCOFF, since the AIX ABI is used
        with more than just XCOFF now.
        (SET_ASM_OP): Remove, now defined where needed.
        (FUNCTION_PROLOGUE): New macro definition.
        (FUNCTION_EPILOGUE): New macro definition.
        (ASM_OPEN_PAREN, ASM_CLOSE_PAREN): New macro definition.

        * config/rs6000/xcoff.h: New file.

        * config/rs6000/linux64.h: New file.

        * config/rs6000/darwin.h: Copy needed AIX alignment definitions.

2001-07-31  Alan Modra  <amodra@bigpond.net.au>

        * rs6000.c (print_operand_address): Handle ELF syntax.
        (output_toc): Simplify.  Use DOUBLE_INT_ASM_OP.
        * rs6000.md (load_toc_aix_di): Handle ELF syntax.
        * rs6000.h (ASM_OUTPUT_DOUBLE_INT, ASM_LONG): Use DOUBLE_INT_ASM_OP.

2001-07-31  David Edelsohn  <edelsohn@gnu.org>

        * rs6000.c (rs6000_override_options): Only disable
        flag_function_sections for XCOFF.
        (exact_log2_cint_operand): New predicate.
        (reg_or_{add,sub}_cint64_operand): New predicates.
        (add_operand): Compare CONST_INT with fewer function calls.
        (rs6000_emit_set_const, rs6000_emit_set_long_const): New functions.
        (print_operand, case 'p'): Ensure positive operand.
        (rs6000_emit_load_toc_table): No load_toc_v4_pic_di.
        * rs6000.h (CONST_OK_FOR_LETTER_P, case 'N'): Ensure positive value.
        (PREDICATE_CODES): Add new predicates.
        * rs6000.md (addsi3): Split 32-bit constants more correctly.
        (divsi3, modsi3): Ensure positive power-of-2.
        (adddi3): Use new predicate.  Split 32-bit constants more
        correctly.  Re-arrange splitter to handle any constant.
        (subdi3): Use new predicate.
        (divdi3, moddi3): Ensure positive power-of-2.
        (movdi): Use rs6000_emit_set_const.
        (load_toc_v4_pic_di): Delete.

2001-07-31  Graham Stott <grahams@redhat.com>

        * function.c (pad_below): Revert 2001-07-26 patch.

Tue Jul 31 15:37:35 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * reg-stack (convert_regs_1): Fix best edge condition.

Tue Jul 31 15:33:27 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * jump.c (duplicate_loop_exit_test): Better test for jumps
        entering the loop; create loop pre_header.

2001-07-31 Hartmut Penner <hpenner@de.ibm.com>

        * doc/install.texi: Add s390 and s390x as new targets.
        * doc/invoke.texi: Add documantation of S/390 and zSeries
        target options.
        * doc/md.texi: Add documantation of S/390 and zSeries constraints.

2001-07-30  Roman Zippel  <zippel@linux-m68k.org>

        * config/m68k/m68k.md: Replace all general_operand with
        nonimmediate_operand for all destinations.
        * config/m68k/m68k.c (not_sp_operand): Likewise.

Mon Jul 30 23:20:34 EDT 2001  John Wehle  (john@feith.com)

        * flow.c (merge_blocks): Return 1 if an extra jump is inserted.

2001-07-30  Richard Henderson  <rth@redhat.com>

        * config/ia64/ia64.h (DEBUG_RANGES_SECTION): New.
        * config/mips/iris6.h (DEBUG_RANGES_SECTION): New.

2001-07-30  Roman Zippel  <zippel@linux-m68k.org>

        * config/m68k/m68k.h (TARGET_SWITCHES/TARGET_OPTIONS):
        Add missing doc strings
        * config/m68k/linux-aout.h (SUBTARGET_SWITCHES): Likewise
        * config/m68k/linux.h (SUBTARGET_SWITCHES): Likewise

Mon Jul 30 22:16:08 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * i386.c (ix86_output_main_function_alignment_hack): New function.
        (TARGET_ASM_FUNCTION_PROLOGUE): Default to it.

        * flow.c (mark_dfs_back_edges): Move from loop_p ; mark back
        edges by EDGE_DFS_BACK flag.
        (dump_edge_info): Add dfs_back flag.
        * basic-block.h (EDGE_DFS_BACK): New constant.
        (mark_dfs_back_edges): Declare.
        * alias.c (loop_p): Remove.
        (mark_constant_function): Use mark_dfs_back_edges.

        * reg-stack.c (block_info_def): Add predecesors counter and stack_out.
        (reg_to_stack): Call mark_dfs_back_edges; count the predecesors.
        (compensate_edge): Break out from ...
        (convert_regs_1): ... here; do smart choosing of stack_out to copy.
        (convert_regs_2): Set block_done once block is really done;
        Do updating of the predecesors counts.

        * toplev.c (rest_of_compilation): Recompute block_for_insn
        before post-reload cfg_cleanup.
        * function.c (thread_prologue_epilogue_insns):
        Call set_block_for_new_insns when emitting prologue directly.

2001-07-30  Andreas Jaeger  <aj@suse.de>

        * jump.c: Add prototype for mark_modified_reg.

        * cse.c (set_live_p): Add unused attribute.

        * gcov.c (calculate_branch_probs): Use gcov_type to avoid
        overflow.
        (scan_for_source_files): Use long for count to avoid overflow.
        (output_data): Likewise.
        (output_data): Don't use string concatatenation to silence gcc
        -traditional.

        * predict.c: Fix typos and grammar.

        * gcse.c (insert_insn_end_bb): Remove unused variables.

Mon Jul 30 21:54:53 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (mark_set_1): Use REG_FREQ_FROM_BB.
        (attempt_auto_inc): LIkewise.
        (mark_used_reg): Likewise.
        (try_pre_increment_1): Likewise.
        * regclass.c (regclass): Likewise.
        * global.c (allocno_compare): Update comment; change scaling factor.
        * local-alloc.c (QTY_CMP_PRI): Likewise.
        * regs.h (REG_FREQ_FROM_BB): New.
        (REG_FREQ_MAX): Likewise.

2001-07-30  H.J. Lu <hjl@gnu.org>

        * config/mips/linux.h (CPLUSPLUS_CPP_SPEC): Add
        -D_GNU_SOURCE.

2001-07-30  H.J. Lu  (hjl@gnu.org)

        * config/mips/linux.h (ASM_DECLARE_FUNCTION_NAME): Defined.
        (ASM_DECLARE_FUNCTION_SIZE): Likewise.
        (FUNCTION_NAME_ALREADY_DECLARED): Likewise.

2001-07-30  Nick Clifton  <nickc@cambridge.redhat.com>

        * config/arm/t-arm-elf (MULTILIB_EXCEPTIONS): Skip -mthumb as well
        as -mthumb-interwork when -mcpu=arm7 is specified.

Mon Jul 30 17:44:43 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * predict.def (noreturn, loop branch, loop exit): Mark as first
        match heuristics.

Mon Jul 30 12:52:11 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * combine.c (try_combine): Avoid barrier after noop jumps.

2001-07-29  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * cpphash.h (struct cpp_reader): Remove import_warning.
        * cpplib.c (skip_rest_of_line): Don't bother turning off
        macro expansion.
        (parse_include): Move include handling to...
        (do_include_common): ... here.  Move import warning from...
        (do_import): ... here.
        (do_pragma_poison): Don't do a callback for poison identifiers.
        * cpplib.h (struct cpp_callbacks): Don't do poison callbacks.
        * cppmain.c (setup_callbacks): Similarly.

Sun Jul 29 23:26:50 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * rtlanal.c (parms_set, find_first_parameter_load): Break out from...;
        handle multiple sets.
        * except.c (sjlj_mark_call_sites): .... here.
        * gcse.c (insert_insn_end_bb): Use find_first_parameter_load.

Sun Jul 29 21:38:45 CEST 2001  Jan Hubicka  <jh@suse.cz>

        Suggested by Richard Henderson and Richard Kenner:
        * combine.c (recog_for_combine): Use the fake recog
        only if instruction does not match.
        * rtl.h (NOOP_MOVE_INSN_CODE): New.
        * rtlanal.c (noop_move_p): Always return 1 for NOOP_MOVE_INSN_CODE.

        * combine.c (try_combine): Discover noop jump as direct jump.

2001-07-29  Daniel Berlin  <dan@cgsoftware.com>

        * df.c (df_rd_global_compute): Add successors to worklist, not
        current item.
        (df_ru_global_compute): Ditto.

2001-07-27  Daniel Berlin  <dan@cgsoftware.com>

        * regclass.c (reg_scan_mark_refs): Increment REG_N_REFS when we
        increment REG_N_SETS.

2001-07-26  Daniel Berlin  <dan@cgsoftware.com>

        * sbitmap.h: New prototype for sbitmap_a_xor_b.

        * sbitmap.c (sbitmap_a_xor_b): New function.
        ifdef the basic block stuff on IN_GCC.

2001-07-29  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * cppexp.c (parse_defined): Always record the macro name.
        (lex): Don't worry about identifiers, or special-case
        CPP_NOT here.
        (_cpp_parse_expr): Figure out at the end of the routine
        whether we saw a valid !defined() expression.
        * cppfiles.c (stack_include_file): Update for mi_valid.
        (_cpp_pop_file_buffer): Similarly.
        * cpplex.c (_cpp_lex_token): Similarly.
        * cpphash.h (enum mi_state, enum mi_ind, mi_state,
        mi_if_not_defined, mi_lexed): Remove.
        (mi_valid): New.
        * cpplib.c (do_if): Simplify.
        (do_endif, push_conditional, _cpp_handle_directive): Update
        for renaming of mi_state to mi_valid.
doc:
        * cpp.texi: Add index entries for digraphs, and add comment
        that C++ refers to them as alternative tokens.

Sun Jul 29 18:59:13 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * basic-block.h (CLEANUP_PRE_LOOP): New.
        * except.c (finish_eh_generation): Update call of cleanup_cfg.
        * sibcall.c (optimize_sibling_calls): Likewise.
        * toplev.c (rest_of_compilation): Likewise.
        * flow.c (try_forward_edges): Take argument MODE;
        do not forward over loop pre-headers if CLEANUP_PRE_LOOP.
        (try_optimize_cfg): Update call of try_forward_edges.

Sun Jul 29 18:59:56 CEST 2001  Roman Zippel  <zippel@linux-m68k.org>
                               Jan Hubicka  <jh@suse.cz>

        * (validate_replace_rtx_1): Fix simplification of MINUS.

2001-07-29  Neil Booth  <neil@daikokuya.demon.co.uk>

        PR preprocessor/3669
        * cppinit.c (init_dependency_output): Turn off dump requests
        if sending dependencies to stdout.

2001-07-28  Richard Henderson  <rth@redhat.com>

        * flow.c (life_analysis): Elide PROP_ALLOW_CFG_CHANGES if
        not optimizing.

2001-07-28  Golubev I. N.  <gin@mo.msk.ru>

        * config/i386/sco5.h (DWARF2_DEBUGGING_INFO): Define.

2001-07-28  Kazu Hirata  <kazu@hxi.com>

        * config/h8300/h8300.h (ENCODE_SECTION_INFO): Check to see if DECL
        is VAR_DECL first to prevent an ICE.

2001-07-28  Richard Henderson  <rth@redhat.com>

        * varasm.c (immed_real_const_1): Don't elide special cases for
        nested functions.
        (clear_const_double_mem): Clear const_tiny_rtx too.

2001-07-28  Richard Henderson  <rth@redhat.com>

        * dwarf2out.c (dw_val_class_offset): New.
        (struct dw_ranges_struct, dw_ranges_ref): New.
        (ranges_table, ranges_table_allocated): New.
        (ranges_table_in_use, RANGES_TABLE_INCREMENT): New.
        (add_AT_offset, add_ranges, output_ranges): New.
        (print_die, output_die): Handle dw_val_class_offset.
        (attr_checksum, size_of_die, value_format): Likewise.
        (gen_lexical_block_die): Handle non-contiguous blocks.
        (gen_block_die): Likewise.
        (dwarf2out_finish): Add a DW_AT_entry_pc to the compilation unit
        if needed.  Dump the ranges table.
        * final.c (final_start_function): Remove unnecessary notes and
        rebuild the block tree before numbering the blocks.
        * function.c (reorder_blocks_0): Walk the existing block tree
        to unmark all blocks.
        (reorder_blocks_1): Create block fragments when duplicate block
        notes are seen.
        (reorder_fix_fragments): New.
        (reorder_blocks): Call it.
        * tree.h (BLOCK_FRAGMENT_ORIGIN, BLOCK_FRAGMENT_CHAIN): New.

2001-07-28  Richard Henderson  <rth@redhat.com>

        * emit-rtl.c (adjust_address): Make a copy of the memory address.

2001-07-28  Richard Henderson  <rth@redhat.com>

        * flow.c (add_to_mem_set_list): New function.
        (init_propagate_block_info): Use it.
        (mark_set_1): Likewise.
        (insn_dead_p): Canonicalize memory address for dead store
        comparison.  Allow wider mode stores to kill narrower mode stores.
        (invalidate_mems_from_autoinc): Use invalidate_mems_from_set.
        (invalidate_mems_from_set): Don't handle MEMs.

2001-07-28  Kazu Hirata  <kazu@hxi.com>

        * config/h8300/h8300.h: Fix formatting.

Sat Jul 28 23:35:22 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * basic-block.h (EDGE_FREQUENCY): New macro.
        * bb-reorder (fixup_reorder_chain): Set counts and frequencies
        for new BB/edges.
        * flow.c (find_sub_basic_blocks): Likewise.
        (try_crossjump_to_edge): Likewise; use EDGE_FREQUENCY
        (redirect_edge_and_branch): Use EDGE_FREQUENCY.

        * predict.c (DEF_PREDICTOR): New argument FLAGS.
        (HITRATE): New macro.
        (PRED_FLAG_FIRST_MATCH): New constant.
        (predictor_info): New field flgags.
        (combine_predictions_for_insn): Use DS theory to combine
        probabilities; set the edge probabilities when finished.
        (estimate_probability): Avoid duplicated matches
        of LOOP_BRANCH heuristics for nested loops; update comment.
        * predict.def: Add flags for each prediction, set probabilities
        according to B&L paper.
        * predict.h (DEF_PREDICTOR): New argument FLAGS.

        * profile.c (compute_branch_probabilities):  Cleanup way the edge
        probabilities are computed and REG_BR_PROB notes are dropped; if
        values does not match, emit error.
        (init_branch_prob): Do error instead of warning when profile driven
        feedback is missing or corrupt.

2001-07-27  DJ Delorie  <dj@redhat.com>

        * ifcvt.c (noce_get_alt_condition): If the condition is a compare
        against a constant, try to adjust the compare to have the desired
        constant in it so that min/max optimizations happen more often.

Fri Jul 27 17:53:00 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (last_loop_beg_note): New function.
        (redirect_edge_and_branch): Use it.
        (split_edge): Likewise.

        * alias.c (loop_p): Avoid uninitialized memory access.

        * flow.c (try_forward_edges): Avoid accessing freed memory.

        * flow.c (backward_edge_of_syntactic_loop_p): Avoid uninitialized
        variable access.

2001-07-27  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * doc/install.texi (Configuration): Properly link the host
        specific instructions also when generating HTML.

Fri Jul 27 00:33:35 EDT 2001  John Wehle  (john@feith.com)

        * flow.c (redirect_edge_and_branch_force): Test
        target->global_live_at_start.

2001-07-26  Richard Henderson  <rth@redhat.com>

        * simplify-rtx.c (avoid_constant_pool_reference): Export.
        * rtl.h (avoid_constant_pool_reference): Declare it.
        * dwarf2out.c (add_location_or_const_value_attribute): Use it.
        (add_const_value_attribute): Use add_AT_unsigned for unsigned values.

Thu Jul 26 22:30:22 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * rtl.h (cleanup_barriers): Declare.
        * jump.c (cleanup_barriers): New function.
        * toplev.c (rest_of_compilation): Call cleanup_barriers
        before loop optimizer and after bb_reorder.

        * flow.c (back_edge_of_syntactic_loop_p): New.
        (split_edge): Use it.

2001-07-26  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * glimits.h (_MACH_MACHLIMITS_H_): Delete.

Thu Jul 26 22:22:21 2001  Denis Chertykov  <denisc@overta.ru>

        * cse.c (cse_process_notes): Replace any registers if the address
        remains valid.

Thu Jul 26 14:04:03 EDT 2001  John Wehle  (john@feith.com)

        * basic-block.h (PROP_ALLOW_CFG_CHANGES): Define.
        (PROP_FINAL): Include PROP_ALLOW_CFG_CHANGES.
        (propagate_block): Update prototype.
        * flow.c (update_life_info): Simplify the CFG and
        recalculate the global regs which are alive when
        removing dead code during a global update.
        (propagate_block): Return non-zero if an INSN is
        deleted.

2001-07-26  Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>

        * Makefile.in (LIBICONV): Define.

2001-07-26  Catherine Moore  <clm@redhat.com>

        * config/v850/v850.h (ENCODE_SECTION_INFO):  Change order
        of conditional to avoid tree checking errors.

2001-07-26  Kazu Hirata  <kazu@hxi.com>

        * regmove.c (regmove_optimize): Don't replace a reg with
        another reg of a different mode.

2001-07-26  Andrew MacLeod  <amacleod@redhat.com>

        * params.def (PARAM_MAX_PENDING_LIST_LENGTH): Add parameter to
        limit length of dependancy flush list.
        * params.h (MAX_PENDING_LIST_LENGTH): Define.
        * sched-int.h  (struct deps): Add pending_flush_length field.
        * sched-deps.c (flush_pending_lists): Last_pending_memory_flush now
        has 1 element in it.
        (sched_analyze_1): Use MAX_PENDING_LIST_LENGTH.
        (sched_analyze): After a jump, if the pending memory flush list is too
        large, flush the pending lists.
        (init_deps): Initialize pending_flush_length to 0.
        * doc/invoke.texi (max_pending_list_length): Document parameter.

2001-07-26  Neil Booth  <neil@daikokuya.demon.co.uk>

        * toplev.c, varasm.c, final.c: Include xcoffout.h if appropriate.
        * dbxout.c (dbxout_global_decl): Move outside #ifdef.
        * Makefile.in (varasm.o, final.o, toplev.o): Update dependencies.

2001-07-26  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * cpphash.h (struct_lexer_state): Delete was_skipping.
        Move skipping here from struct cpp_reader.
        * cpplex.c (parse_identifier): Update.
        (_cpp_lex_token): Don't skip tokens in a directive.
        * cpplib.c (struct if_stack): Update.
        (start_directive, end_directive): Don't change skipping state.
        (_cpp_handle_directive): Update.
        (do_ifdef, do_ifndef, do_if, do_elif): Similarly.
        (do_else, do_endif): Update; only check for excess tokens if not
        in a skipped conditional block.
        (push_conditional): Update for new struct if_stack.

2001-07-26  Graham Stott  <grahams@redhat.com>

        * function.c (locate_and_pad_parm): Also pad initial offset
        so that the total argument size also includes the padding.

2001-07-26  Graham Stott <grahams@redhat.com>

        * gensupport.c (alter_output_for_insn): Correct enable checking failure
        change XSTR to XTMPL.

        (process_one_cond_exec): Likewise

2001-07-25  Richard Henderson  <rth@redhat.com>

        * varasm.c (assemble_variable): Create DECL_RTL before setting
        TREE_ASM_WRITTEN.

Thu Jul 26 00:19:30 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * predict.c (estimate_probability): Avoid duplicated predictions.

        * loop.c (find_and_verify_loops): Grok multiple barriers.

Wed Jul 25 18:00:05 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * config/alpha/alpha.c (print_operand, case '/'): Don't write '/'.

        * dbxout.c: Consistently use putc instead of fputc.
        (print_wide_int): New function; call instead of direct fprintf.
        (dbxout_type_index): Adjust calls of CHARS to be more accurate.
        (dbxout_type_fields, dbxout_type_method_1): Likewise.
        (dbxout_type_methods, dbxout_range_type, dbxout_type): Likewise.
        (print_int_cst_octal): Likewise.
        (print_octal): Show we wrote characters.
        (dbxout_type): Set have_used_extensions in more places.

2001-07-25  Catherine Moore  <clm@redhat.com>

        * config/v850/v850.c (v850_va_arg):  Use addr
        instead of valist to build incr.

Wed Jul 25 22:48:59 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (delete_dead_jumptables): New function.
        (life_analyzis): Call it.
        * bb-reorder.c (skip_insns_after_block): Handle contradictory
        sequences.

2001-07-25  Richard Henderson  <rth@redhat.com>

        * except.c (reachable_handlers): Handle a region being removed
        out from under a RESX.

2001-07-25  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (alpha_emit_conditional_move): Always
        swap GE/GT if it is an fp comparison.

2001-07-25  Andrew Haley  <aph@cambridge.redhat.com>

        * alias.c (rtx_equal_for_memref_p): Allow strings as types in
        operands.

Wed Jul 25 08:25:01 2001  Jeffrey A Law  (law@cygnus.com)

        * ssa.c (rename_insn_1): Do not wrap an assignment to a
        paradoxical SUBREG inside a SEQUENCE.  Fix minor formatting
        glitch.

        * ssa-ccp.c (visit_expression): Handle CALL_INSNs that can
        throw an exception.
        (visit_expression): When attempting to simplify an expression,
        retrieve any modes for arguments before they are simplified
        to constants.

2001-07-25  Andrew MacLeod  <amacleod@redhat.com>
            Janis Johnson  <janis@us.ibm.com>

        * stmt.c (expand_goto): A nonlocal goto can be a call too.
        * builtins.c (expand_builtin_longjmp): Reverse label and static chain
        pointer parameters to match documented usage of nonlocal_goto.
        * config/ia64/ia64.md (nonlocal_goto): Revert label and static chain
        parameters to their correct order.
        * config/sparc/sparc.md (nonlocal_goto): Revert label and static chain
        parameters to their correct order.

2001-07-25  Andrew MacLeod  <amacleod@redhat.com>

        * config/ia64/ia64.h (STRIP_NAME_ENCODING): Strip out '*' as well.

2001-07-25  Jan Hubicka  <jh@suse.cz>
            Richard Henderson  <rth@redhat.com>

        * flow.c (find_sub_basic_blocks): Fix handling of the last BB in
        the sequence.
        (make_edges): New argument update_p; populate the edge cache if set.
        (find_basic_blocks): Update make_edges invocation.

2001-07-24  Joel Sherrill <joel@OARcorp.com>

        * config/i960/i960.h (CPP_SPEC): Define _SOFT_FLOAT for -msoft-float.

2001-07-24  Joel Sherrill <joel@OARcorp.com>

        * config/sparc/rtems.h (CPP_PREDEFINES): Remove redundant
        -Acpu and -Amachine.h.
        * config/sparc/rtemself.h (CPP_PREDEFINES): Likewise.
        Corrected header to say ELF not a.out.
        * config/sparc/sparc.h (CPP_CPU_SPEC): Define _SOFT_FLOAT
        when given -msoft-float.

2001-07-24  Joel Sherrill <joel@OARcorp.com>

        * config.gcc (arm*-*-rtems*): Include crtinit.o and crtfini.o as
        extra multilib parts like arm-elf.
        (i960-*-coff*, i960-*-rtems): Should not use collect2.
        (m68020-*-elf*, m68k-*-elf*, m68k-*-rtems*): Include crtinit.o and
        crtfini.o as extra multilib parts.

2001-07-24  Joel Sherrill <joel@OARcorp.com>

        * configure.in: Add rtems as a supported thread model.
        * gthr-rtems.h: Add missing entry point __gthread_active_p.
        * configure: Rebuilt.

2001-07-24  Lars Brinkhoff  <lars@nocrew.org>

        * stor-layout.c (get_mode_alignment): make it work when
        BITS_PER_UNIT is not a power of two.
        * builtins.c (get_pointer_alignment): Likewise.

2001-07-24  Richard Henderson  <rth@redhat.com>

        * simplify-rtx.c (avoid_constant_pool_reference): Coerce
        the retrieved constant into the expected mode.

Wed Jul 25 01:41:27 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (try_simplify_condjump): Avoid duplicated edges.
        (verify_flow_info): Check for duplicated edges; clarify
        error reporting.

        * flow.c (block_label): Update basic_block_for_insn.
        (commit_edge_insertions): Call compute_bb_for_insn.

        * flow.c (purge_dead_edges): Handle conditional jumps and conditional
        returns too.

        * flow.c (redirect_edge_and_branch,
        try_optimize_cfg): Use redirect_edge_succ_nodup
        (redirect_edge_succ_nodup): New.
        * basic_block.h (redirect_edge_succ_nodup): Declare.

        * toplev.c (rest_of_compilation): Rebuild CFG before cfg_cleanup
        after gcse.

Wed Jul 25 00:32:49 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (try_forward_edges): Accept fallthru edge; Update comment.
        (try_crossjump_to_edge): Update commetns.
        (try_crossjump_bb): Likewise.

2001-07-24  Richard Henderson  <rth@redhat.com>

        * combine.c (distribute_notes): Move set of need_refresh
        for noop_move_p down to catch all cases.

Tue Jul 24 20:32:44 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * recog.c (split_all_insns_noflow): New.
        * rtl.h (split_all_insns_noflow): Declare.
        * ia64.c (ia64_reorg): Use split_all_insns_noflow.
        * m68hc11.c (m68hc11_reorg): Likewise.
        * sh.c (machine_dependent_reorg): Likewise.
        * toplev.c (rest_of_compilation): Likewise for last split_all_insns
        call.

2001-07-18  Andrew Haley  <aph@cambridge.redhat.com>

        * config/sh/sh.md (ashlsi3_std splitter): Split only after reload.
        (ashlsi3_n splitter): Likewise.
        (lshrsi3_n splitter): Likewise.

        (GOTaddr2picreg): Make const SImode.
        (sym_label2reg): Likewise.
        (symGOT2reg): Likewise.
        (symGOTOFF2reg) Likewise.

        (casesi_worker_0): Make unspec SImode.

2001-07-18  Andrew Haley  <aph@cambridge.redhat.com>

        * config/sh/sh.c (barrier_align): Check that an operand really is
        an insn before extracting its INSN_CODE.

2001-07-24  Andrew Haley  <aph@cambridge.redhat.com>

        * config/sh/sh.h (OVERRIDE_OPTIONS): Add braces to get rid of
        dangling else.

        * config/sh/sh.h (INITIALIZE_TRAMPOLINE): Truncate operands
        for SImode to prevent overflow.

2001-07-24  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * config/mips/irix6-libc-compat.c: New file.
        * config/mips/t-iris6 (LIB2FUNCS_STATIC_EXTRA): Use it.
        * doc/install.texi (Specific, mips*-sgi-irix6): Mention structure
        passing workaround.

2001-07-24  lars brinkhoff  <lars@nocrew.org>

        * rtl.texi (REG_POINTER): Document.
        (Machine Modes): Document BImode, OImode, PQImode, PHImode,
        QFmode, HFmode, TQFmode, QCmode, and HCmode.

Tue Jul 24 10:49:40 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (delete_noop_moves): Do not confuse libcall regions.

2001-07-23  Richard Henderson  <rth@redhat.com>

        * flow.c (try_simplify_condjump): Use tidy_fallthru_edge.

2001-07-23  Kazu Hirata  <kazu@hxi.com>

        * config/h8300/h8300-protos.h: Add a prototype for
        general_operand_dst_push.
        * config/h8300/h8300.c (general_operand_dst_push): New.
        * config/h8300/h8300.h (OK_FOR_T): New.
        (EXTRA_CONSTRAINT): Use it.
        * config/h8300/h8300.md (movqi_push): Remove and integrate into
        the existing movqi pattern.
        (movhi_push): Likewise.

        * reload.c: Fix comment typos.

Mon Jul 23 23:34:07 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * gcse.c (cprop_insn): Update call of cprop_cc0_jump.

2001-07-23  H.J. Lu  (hjl@gnu.org)

        * doc/extend.texi: Update __builtin_return_address and
        __builtin_frame_address.

2001-07-23  Richard Henderson  <rth@redhat.com>

        * config/i386/i386.c (ix86_expand_setcc): Don't use method 0
        before CSE.
        * config/i386/i386.md: New setcc+movzbl peephole2.

2001-07-23  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * objc/Make-lang.in (objc-act.o): Depend on debug.h.
        * objc/objc-act.c: Include debug.h.
        (synth_module_prologue): Save and restore debug hooks too.

2001-07-23  lars brinkhoff  <lars@nocrew.org>

        * tm.texi (TARGET_FLOAT_FORMAT): Document IBM_FLOAT_FORMAT
        and C4X_FLOAT_FORMAT.
        (BOOL_TYPE_SIZE): Document.

Mon Jul 23 11:54:23 2001  Clinton Popetz  <cpopetz@cpopetz.com>

        * unroll.c (loop_iterations): Fix miscalculation of initial
        giv offset.

2001-07-13  Andrew Haley  <aph@redhat.com>

        * doc/tm.texi (MD_CAN_REDIRECT_BRANCH): New macro.
        * config/sh/sh.h (MD_CAN_REDIRECT_BRANCH): New macro.
        * config/sh/sh.c (sh_can_redirect_branch): New function.
        * config/sh/sh-protos.h (sh_can_redirect_branch): Declare.
        * reorg.c (steal_delay_list_from_target): Use
        MD_CAN_REDIRECT_BRANCH to see if redirection is possible.

Mon Jul 23 17:20:18 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (try_simplify_condjump): Unlink insn chain on
        fallthru edge; use can_fallthru.

Mon Jul 23 16:03:19 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * basic-block.h (find_sub_basic_block): Declare.
        * flow.c (make_edges): New arguments MIN and MAX;
        (find_sub_basic_blocks): Revamp to use make_edges
        and purge_dead_edges.
        (find_basic_blocks): Update call of find_sub_basic_block.

        * recog.c (split_all_insns): Always expect CFG to be consistent;
        call find_sub_basic_blocks in case something has changed.
        * toplev.c (rest_of_compilation): Always call split_all_insns once CFG
        has been built.

        * basic-block.h (delete_noop_moves): Declare.
        * combine.c (combine_instructions): Call it.
        (recog_for_combine): Tolerate noop moves
        (distribute_notes): Force refresh when register dies at noop move.
        * flow.c (delete_noop_moves): Use BB structure; delete JUMP insns
        too.
        (life_analysis): Update delete_noop_moves call.
        (set_noop_p): Move too ...
        * rtlanal.c (noop_move_p): ... here.
        * rtl.h (noop_move_p): Declare.

        * basic-block.h (purge_all_dead_edges, purge_dead_edges): New functions.
        * toplev.c (rest_of_compilation): Conditionally call purge_all_dead_edges
        after combine.
        * gcse.c (cprop_cc0_jump, cprop_insn): New argument "basic_block".
        (cprop_jump): Likewise; call purge_dead_edges if substitution suceeded.

2001-07-23  Hans-Peter Nilsson  <hp@bitrange.com>

        * reload.c (push_reload): Fix typo in comment.
        (find_reloads_address): Ditto.
        (reg_overlap_mentioned_for_reload_p): Ditto in head comment.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * flow.c: Grammar check and clarify a lot of comments.
        (try_simplify_condjump): Rename variables to be clearer.
        (try_forward_edges): Skip complex and fallthru edges.
        Rearrange tests to avoid duplicate checks.
        (flow_find_cross_jump): Likewise.
        (outgoing_edges_match): Allow match if neither branch has
        probability data.  Loosen probability match to 5%.
        (try_crossjump_to_edge): Hoist repeated indirection into
        local variables.
        (try_crossjump_bb): Don't check complex edges.  Eliminate
        redundant crossjump tests.
        (try_optimize_cfg): Fix use of bool.  Reorganize cheaper
        checks before more expensive checks.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * fold-const.c (fold): Test vs FLOAT_TYPE_P instead of
        INTEGRAL_TYPE_P when folding comparisons with operand_equal_p
        arguments.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * m68k.c (const_uint32_operand): Abort if mode is <= 32 bits.
        (const_sint32_operand): Likewise.
        * m68k.md (anon mulsi pattern): Use const_int_operand not
        const_sint32_operand.
        (umulsi3_highpart): Zero extend a constant input.
        (smulsi3_highpart): Don't bother checking SImode constant.
        (const_umulsi3_highpart): Give op3 DImode.
        (const_smulsi3_highpart): Likewise.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * flow.c (split_block): Make sure bb_note is included in the
        new block when splitting before a label.

Sun Jul 22 23:28:56 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * basic-block.h (redirect_edge_and_branch_force,
        redirect_edge_and_branch, block_label, forwarder_block_p): Declare.
        * flow.c (redirect_edge_and_branch_force,
        redirect_edge_and_branch, block_label, forwarder_block_p): Make global.
        (redirect_edge_and_branch_force): Fix copying of lifeness information.
        (block_label): Handle EXIT_BLOCK_PTR by returning NULL.
        * ifcvt.c (dead_or_predictable): Take BB as an new destionation
        instead of label; update CFG after transformation.
        (find_if_case_1): Update call, use redirect_edge_and_branch_force
        for finishing the transformation; handle even case where ELSE
        does not follow THEN.
        (find_if_case_2): Update call of dead_or_predictable; simplify
        CFG update.

        * emit-rtl.c (split_branch_probability): New global variable.
        (try_split): Take care to set split_branch_probability and
        create REG_BR_PROB note for new jump insns.
        * md.texi (define_split): Document new feature.

        * i386.c (ix86_split_fp_branch): Redistribute branch probability notes.

2001-07-22  Neil Booth  <neil@daikokuya.demon.co.uk>

        * varasm.c: Don't inlcude dbxout.h, sdbout.h or xcoffout.h.
        (asm_out_file): Remove redundant declaration.
        (assemble_asm): Remove old #if 0 block.
        (assemble_variable): Remove end of function; debug output is
        now handled with global_decl.  Remove old #if 0 block.  Update.
        Remove saved_in_section and associated no-op code.
        * Makefile.in (varasm.o): Correct dependencies.

Sun Jul 22 17:55:11 2001  Alexandre Oliva  <aoliva@redhat.com>

        * config/i386/freebsd-aout.h (ASM_PREFERRED_EH_DATA_FORMAT): Use
        the definition in defaults.h.

Sun Jul 22 21:31:04 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * jump.c: Update comments.
        (delete_barrier_successors, delete_unreferenced_labels,
        delete_noop_moves, tension_vector_labels, delete_from_jump_chain,
        delete_labelref_insn, redirect_tablejump, jump_optimize_1,
        jump_optimize, jump_optimize_minimal): Kill.
        (rebuild_jump_labels): Move code from jump_optimize_1.
        (purge_line_number_notes): Likewise.
        (copy_loop_headers): Likewise.
        * reg-stack.c: Update comment.
        * stmt.c: Likewise.
        * rtl.h (jump_optimize, jump_optimize_1, JUMP_NOOP_MOVES,
        JUMP_AFTER_REGSCAN): Kill.
        * toplev.c (rest_of_compilation): Use cleanup_cfg, call
        purge_line_number_notes and copy_loop_headers.

2001-07-22 Neil Booth  <neil@daikokuya.demon.co.uk>
           Richard Henderson  <rth@redhat.com>

        * dbxout.c (dbxout_global_decl): New.
        (xcoff_debug_hooks, dbx_debug_hooks): Use it.
        * sdbout.c (sdbout_finish): New.
        (sdbout_debug_hooks): Use it, add comments.
        (sdbout_global_decl): Defer initialised public vars to
        sdbout_finish.
        * varasm.c (assemble_variable): Don't output debug information
        for file-scope variables.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (get_trap_mode_suffix): New.
        (get_round_mode_suffix): New.
        (print_operand): Use them for [/].  Remove support for [&'`()+].
        * config/alpha/alpha.h (PRINT_OPERAND_PUNCT_VALID_P): Update.
        * config/alpha/alpha.md (attr round_suffix): New.
        (attr trap_suffix): New.
        (all insns): Set them appropriately.  Use %/ instead of the
        myriad punctuators.

2001-07-22  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * dbxout.c, sdbout.c, varasm.c: Revert most recent debug patch.

2001-07-22  Richard Henderson  <rth@redhat.com>

        * regrename.c (regrename_optimize): Compute nregs for each
        potential target register.

2001-07-21 Neil Booth  <neil@daikokuya.demon.co.uk>
           Richard Henderson  <rth@redhat.com>

        * dbxout.c (dbxout_global_decl): New.
        (xcoff_debug_hooks, dbx_debug_hooks): Use it.
        * sdbout.c (sdbout_finish): New.
        (sdbout_debug_hooks): Use it, add comments.
        (sdbout_global_decl): Defer initialised public vars to
        sdbout_finish.
        * varasm.c (assemble_variable): Don't output debug information
        for file-scope variables.

2001-07-21  H.J. Lu  (hjl@gnu.org)

        * config/mips/mips.c (mips_cpu): Moved into ...
        (override_options): Here.

        * config/mips/mips.h (mips_cpu_attr): Replace mips_cpu with
        mips_tune.
        (mips_cpu): Removed.

2001-07-21  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.md ("andqi3"): Accept d as second operand.
        ("iorqi3"): Likewise.
        ("xorqi3"): Likewise.
        ("*addhi3"): Fix constraint to avoid reloading in a soft register.
        ("*subhi3_sp): Likewise.
        ("*subhi3"): Likewise.
        ("extendhisi2"): Accept D, X and Y as source operand to avoid
        reload problems.

2001-07-21  Nathan Sidwell  <nathan@codesourcery.com>

        * doc/tm.texi: Remove DEFAULT_VTABLE_THUNKS.
        * config/freebsd.h: Likewise.
        * config/linux.h: Likewise.
        * config/openbsd.h: Likewise.
        * config/alpha/linux-elf.h: Likewise.
        * config/arm/linux-elf.h: Likewise.
        * config/d30v/d30v.h: Likewise.
        * config/fr30/fr30.h: Likewise.
        * config/ia64/aix.h: Likewise.
        * config/ia64/ia64.h: Likewise.
        * config/mips/linux.h: Likewise.
        * config/pj/pj.h: Likewise.
        * config/rs6000/linux.h: Likewise.
        * config/sparc/linux.h: Likewise.
        * config/sparc/linux64.h: Likewise.

2001-07-20  Bruce Korb  <bkorb@gnu.org>

        * fixinc/fixincl.c(test_for_changes): force unsigned char comparisons
        because getc() and char* may disagree on signedness.

2001-07-20  Richard Henderson  <rth@redhat.com>

        * doc/rtl.texi (REG_DEAD): Update for current semantics.

        * flow.c (try_redirect_by_replacing_jump): Correctly compute which
        insns to delete in the presence of cc0 in a jump insn.

Fri Jul 20 22:14:49 CEST 2001  Roman Zippel  <zippel@linux-m68k.org>
                               Jan Hubicka  <jh@suse.cz>

        * m68k.md (zero_extend?i?i2 expander): Use gen_lowpart instead
        of doing the change by hand.

Fri Jul 20 21:59:42 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * rtlanal.c (set_noop_p): Return true for noop jumps.

        * expr.c (emit_single_push_insn): Add call to push expander.
        * expr.h (optab_index): Add OTI_push
        (push_optab): New constant.
        * genopinit.c (optabs): Add push_optab.
        * optabs.c (init_optab): Init push optab.
        * md.texi (push??1): Document

2001-07-20  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.md ("movdi", "movdi_internal"): Use an
        expand to emit the pattern; put a REG_INC note for push/pop
        instructions.
        ("movdf", "movdf_internal"): Likewise.
        ("movsi", "movsi_internal"): Likewise.
        ("movsf", "movsf_internal"): Likewise.
        ("movhi", "movqi"): Emit a REG_INC note for push/pop instructions.

2001-07-20  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.c (m68hc11_gen_highpart): Don't use
        gen_highpart.

2001-07-20  Daniel Berlin  <dan@cgsoftware.com>

        * params.def: Change default max inline insns to 100.

2001-07-20  Diego Novillo  <dnovillo@redhat.com>

        * combine.c (combine_simplify_rtx): Generate a new shift operation
        when simplifying the first operand of a (neg (ashift)) expression.

2001-07-20  Roman Lechtchinsky  <rl@cs.tu-berlin.de>

        * regclass.c (N_REG_INTS): Use only 32 bits per element.

2001-07-20  Kelley Cook  <kelley.cook@home.com>

        * doc/install.texi (sparc-sun-solaris*): Add in 4.x assembler bug
        information.   Move rest into ...
        (*-*-solaris): ... here.  Eliminate redundant information and
        reword necessary packages section.  Delete 4.x assembler bug info.
        (sparc-sun-*): Merge into ...
        (sparc-sun-sunos*): here.

2001-07-20  Catherine Moore  <clm@redhat.com>

        * config/v850/v850.md (casesi): Generate LABEL_REF
        with Pmode.

Fri Jul 20 14:12:57 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * i386-protos.h (ix86_zero_extend_to_Pmode): Declare.
        * i386.c (ix86_zero_extend_to_Pmode): Make global.
        * i386.md (strclrsi expander): Use it.

Fri Jul 20 13:24:16 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * integrate.c (copy_insn_list): handle
        NOTE_INSN_DELETED_LABEL, as if it were CODE_LABEL.
        (copy_rtx_and_substitute): Likewise; behave to NOTE_INSN_DELETED_LABEL
        identically as to CODE_LABEL.

        * fold-const (fold): Convert A/B/C to A/(B*C) and
        A/(B/C) to (A/B)*C

        * except.c (connect_post_landing_pads): Delete the RESX insns.

2001-07-20  Aldy Hernandez  <aldyh@redhat.com>

        * config/mips/mips.h (ISA_HAS_NMADD_NMSUB): New macro.

        * config/mips/mips.md (nmadd/nmsub): Use macro.

2001-07-20  Nathan Sidwell  <nathan@codesourcery.com>

        * cppinit.c (remove_dup_dir): Make static.
        (remove_dup_dirs): Make static. Only warn about preempting a
        system directory with a non-system directory.

2001-07-19  Geoffrey Keating  <geoffk@redhat.com>

        * ifcvt.c (noce_try_store_flag_constants): Correct order
        of parameters to trunc_int_for_mode.

2001-07-19  Mark Mitchell  <mark@codesourcery.com>

        * reorg.c (fill_simple_delay_slots): If an instruction might throw
        an exception that will be caught within this function, do not fill
        its delay slot with any subsequent instruction.

2001-07-19  Steve Ellcey <sje@cup.hp.com>

        * tm.texi (POINTERS_EXTEND_UNSIGNED) Modify definition.
        * optabs.c (can_extend_p) Check HAVE_ptr_extend for a specialized
        pointer extension instruction.
        * combine.c (nonzero_bits,num_sign_bit_copies) Likewise.
        * simplify-rtx.c (simplify_unary_operation) Likewise.
        * explow.c (convert_memory_address) Check value of
        POINTERS_EXTEND_UNSIGNED to avoid some conversions when
        less than zero.
        * config/ia64/t-hpux (LIBGCC, INSTALL_LIBGCC, MULTILIB_OPTIONS,
        MULTILIB_DIRNAMES, MULTILIB_MATCHES) Add multilib support.
        * config/ia64/hpux.h (CPP_SPEC, ASM_SPEC, SUBTARGET_SWITCHES)
        Add Multilib Support.
        (POINTERS_EXTEND_UNSIGNED)  Define for ILP32 support.
        * config/ia64/ia64.h (MASK_ILP32, TARGET_ILP32, SUBTARGET_SWITCHES)
        Add Multilib Support.
        (POINTER_SIZE, LONG_TYPE_SIZE, MAX_LONG_TYPE_SIZE) Modify for ILP32
        support.
        * config/ia64/ia64.c (rtx_needs_barrier) Add support for addp4.
        * config/ia64/ia64.md (ptr_extend) New instruction to "swizzle"
        a 32 bit HP-UX pointer into a 64 bit HP-UX pointer.

2001-07-19  Alexandre Oliva  <aoliva@redhat.com>

        * simplify-rtx.c (simplify_replace_rtx): Try to obtain mode from
        old and new operands in `<', `3' and `b'.

2001-07-19  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (emit-rtl.o, c-decl.o): Depend on debug.h.
        (final.o): Don't depend on xcoffout.h, dbxout.h or sdbout.h.
        (toplev.o): Don't depend on xcoffout.h.
        * c-decl.c: Include debug.h
        (duplicate_decls): Use debug hook.
        * dbxout.c (dbxout_source_file, dbxout_args): Make static.
        (dbx_debug_hooks, xcoff_debug_hooks): Update.
        (dbxout_types): Remove.
        * dbxout.h (dbxout_source_file, dbxout_types, dbxout_args): Remove.
        * debug.c (do_nothing_debug_hooks): Update.
        (debug_true_tree, debug_nothing_rtx): New.
        * debug.h (struct rtx_def): New.
        (struct gcc_debug_hooks): New hooks ignore_block,
        outlining_inline_function and label.
        (debug_true_tree, debug_nothing_rtx, dwarf2out_frame_init,
        dwarf2out_frame_finish): New.
        * dwarf2out.c (dwarf2out_ignore_block, dwarf2out_abstract_function):
        Make static, update prototype.
        (dwarf2_debug_hooks): Update.
        * dwarf2out.h (dwarf2out_ignore_block, dwarf2out_abstract_function,
        dwarf2out_frame_init, dwarf2out_frame_finish): Remove.
        * dwarfout.c (dwarf_debug_hooks): Update.
        * emit-rtl.c: Include debug.h.
        (remove_unnecessary_notes): Use debug hook.
        * final.c: Don't include dbxout.h, xcoffout.h or sdbout.h.
        (final_scan_insn): Use debug hook.
        * integrate.c (output_inline_function): Use debug hook.
        * sdbout.c (sdbout_toplevel_data, sdbout_label): Make static.
        (sdb_debug_hooks): Update.
        * sdbout.h (sdbout_label, sdbout_toplevel_data): Remove.
        * toplev.c: Don't include xcoffout.h.
        (note_outlining_of_inline_function, debug_ignore_block): Remove.
        * toplev.h (note_outlining_of_inline_function, debug_ignore_block):
        Remove.
        * tree.h (dwarf2out_do_frame): Remove.

2001-07-19  Catherine Moore  <clm@cygnus.com>

        * config/v850/v850.h (ASM_OUTPUT_LABELREF): Restore.

2001-07-19  Geoffrey Keating  <geoffk@redhat.com>

        * reload1.c (eliminate_regs_in_insn): When updating a set
        to the frame pointer to the hardware frame pointer, perform
        the update always not just when REPLACE is set.

        * reload1.c (choose_reload_regs): Don't inherit a reload
        that crosses multiple registers if registers past the first
        don't fit in the desired class.

        * ifcvt.c (noce_try_store_flag_constants): Use trunc_int_for_mode
        when negating constants.

2001-07-19  Toon Moene  <toon@moene.indiv.nluug.nl>

        * tree.def: Document restriction on {L|R}SHIFT_EXPR's second argument.
        * doc/tree.texi: Ditto.

2001-07-19  Mark Kettenis  <kettenis@wins.uva.nl>
            Jakub Jelinek  <jakub@redhat.com>

        * unwind-dw2.c (_Unwind_FrameState): Add eh_ptr.
        (extract_cie_info): Handle "eh" augmentation properly,
        remember eh_ptr.
        (struct frame_state, __frame_state_for): New.

2001-07-19  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * config/alpha/osf.h (ASM_OUTPUT_WEAK_ALIAS, ASM_WEAKEN_LABEL,
        HANDLE_SYSV_PRAGMA): Define.
        * mips-tfile.c (add_ext_symbol): Pass complete symbol ptr, inline
        previous args.
        (copy_object): Caller changed.

2001-07-19  Andreas Schwab  <schwab@suse.de>

        * configure.in (assembler dwarf2 debug_line support): Define nop
        insn for m68k.
        * configure: Regenerated.

2001-07-19  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (toplev.o, dwarfout.o, final.o): Don't depend on
        dwarfout.h.
        * dbxout.c (dbxout_function): Rename dbxout_funciton_decl, move
        to conditionally compiled block.
        (dbx_debug_hooks, xcoff_debug_hooks): Update.
        * dbxout.h (dbxout_function): Remove.
        * debug.c (do_nothing_debug_hooks): Update.
        * debug.h (struct gcc_debug_hooks): New hooks function_decl,
        global_decl, deferred_inline_function.
        * dwarf2out.c (dwarf2_debug_hooks): Update.
        (dwarf2out_global_decl): New.
        * dwarfout.c: Don't include dwarfout.h.
        (dwarfout_global_decl, dwarfout_function_decl,
        dwarfout_deferred_inline_function): New.
        (dwarf_debug_hooks): Update.
        * dwarfout.h: Remove.
        * final.c: Don't include dwarfout.h.
        * sdbout.c (sdbout_global_decl): New.
        (sdbout_debug_hooks): Update.
        * toplev.c: Don't include dwarfout.h.
        (check_global_declarations, rest_of_compilation): Use new debug hooks.
        (note_deferral_of_defined_inline_function): Remove.
        * toplev.h (note_deferral_of_defined_inline_function): Remove.
        * ch/Makefile.in (lex.o): No dependence on dwarfout.h.
        * ch/lex.c: Don't include dwarfout.h.
        * cp/Make-lang.in (decl2.o): No dependence on dwarfout.h, dwarf2out.h.
        (semantics.o, optimize.o): Depend on debug.h not dwarfout.h.
        * cp/decl2.c: Don't include dwarfout.h and dwarf2out.h.
        * cp/optimize.c: Include debug.h.
        (maybe_clone_body): Use debug hook.
        * cp/semantics.c: Include debug.h.
        (expand_body): Use debug hook.
        * po/POTFILES.in: Remove dwarfout.h.

2001-07-19  Neil Booth  <neil@daikokuya.demon.co.uk>

        * c-lex.c (c_lex): Remove CPP_INT, CPP_FLOAT cases.
        * c-parse.in (yyerror, _yylex): Similarly.
        * cppexp.c (parse_number, parse_defined, lex, _cpp_parse_expr):
        Don't use CPP_INT, CPP_FLOAT; CPP_NUMBER is enough.
        Update comments.
        * cpplib.h (CPP_INT, CPP_FLOAT): Remove.
        * cp/spew.c (read_token, yyerror): Remove CPP_INT, CPP_FLOAT cases.

2001-07-18  Jeff Sturm  <jsturm@one-point.com>

        * dwarf2out.c (dwarf2out_abstract_function): Don't emit
        in-class declaration at -g1.  Fixes c++/2814.

2001-07-18  Richard Henderson  <rth@redhat.com>

        * doc/md.texi (reload_in/out): Document restrictions in predicates
        and constraints for these patterns.  Document empty string matching
        ALL_REGS.

2001-07-18  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * defaults.h (ASM_OUTPUT_WEAK_ALIAS): Check for ASM_WEAKEN_LABEL.

Wed Jul 18 20:47:36 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * cse.c: Undo my previous patch.

2001-07-18  Tom Tromey  <tromey@redhat.com>

        For PR java/2812:
        * configure: Rebuilt.
        * configure.in: Don't check for iconv.h or iconv(); use AM_ICONV
        instead.
        * aclocal.m4 (AM_ICONV): New macro from Bruno Haible.

Wed Jul 18 18:46:30 CEST 2001  Richard Henderson <rth@cygnus.com>
                               Jan Hubicka  <jh@suse.cz>

        * flow.c (redirect_edge_and_branch): Bail out on complex edges.
        (try_optimize_cfg): Do not remove tail recursive labels before sibcall.
        * jump.c (mark_jump_label): Do not forward branches.

Wed Jul 18 18:35:01 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * cse.c (delete_trivially_dead_insns): Delete the libcall block
        when return value is unused.

Wed Jul 18 18:28:16 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * gcse.c (pre_insert_copy_insn): Call update_ld_motion_stores.

Wed Jul 18 12:05:29 2001  Nicola Pero  <n.pero@mi.flashnet.it>

        * gthr-posix.h (__gthread_objc_mutex_trylock): Fixed return value
        on error.  We can't blindly return the result of
        pthread_mutex_trylock because it returns a positive number on
        error, while we must return -1 on error.
        (__gthread_objc_mutex_lock, __gthread_objc_mutex_unlock): Similar
        fixes.
        Reported by Stephen Brandon <stephen@brandonitconsulting.co.uk>.

2001-07-18  Andreas Jaeger  <aj@suse.de>

        * integrate.c (output_inline_function): Correct type of debug_hooks.

2001-07-18  Toon Moene  <toon@moene.indiv.nluug.nl>

        * combine.c (combine_simplify_rtx): DIV can be treated
        associatively for floats if unsafe math optimisations are enabled.

2001-07-17  Richard Henderson  <rth@redhat.com>

        * reload.c (push_secondary_reload): Accept empty-string for ALL_REGS.

2001-07-17  Richard Henderson  <rth@redhat.com>

        * calls.c (prepare_call_address): New parameter SIBCALLP.  If true,
        don't force the function address into a register.
        (expand_call, emit_library_call_value_1): Update callers.
        * builtins.c (expand_builtin_apply): Likewise.
        * expr.h (prepare_call_address): Update decl.

2001-07-17  Chandrakala Chavva  <cchavva@redhat.com>

        * config.gcc: For *-*-chorusos triplet, get chorus.h file from
        config directory.
        * config/i386/chorus.h: Move up.
        * config/sparc/chorus.h: Likewise.
        * config/rs6000/chorus.h: Likewise.
        * config/chorus.h: Moved here.

2001-07-17  Andreas Schwab  <schwab@suse.de>

       * configure.in  (assembler eh_frame optimization): Handle big
       endian.
       * configure: Regenerated.

Tue Jul 17 23:43:31 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * expr.c (epxand_expr): Convert divisions into multiplications by
        reciprocals if -ffast-math.

2001-07-17  Neil Booth  <neil@daikokuya.demon.co.uk>

        * dbxout.c (dbxout_really_begin_function): Rename to
        dbxout_begin_function.
        (dbx_debug_hooks, xcoff_debug_hooks): Update.
        (dbxout_begin_function): Remove.
        (dbxout_function): Update.
        (dbxout_source_line): Update prototype.
        * dbxout.h (dbxout_begin_function): Remove.
        * debug.c (do_nothing_debug_hooks): Update.
        (debug_nothing_tree): Update.
        (debug_nothing_charstar_rtx): Remove.
        * debug.h (union tree_node): Declare.
        (struct rtx_def): Remove.
        (gcc_debug_hooks): New hooks begin_prologue, end_prologue,
        begin_function.  Change source_line prototype.
        (debug_nothing_tree): New.
        (debug_nothing_charstar_rtx): Delete.
        (dwarf2out_begin_prologue): Moved from ...
        * tree.h: ... here.
        * dwarf2out.c (dwarf2_debug_hooks): Update.
        (dwarf2out_begin_prologue): Update prototype.  If genuine dwarf2
        debug info, call dwarf2out_source_line.
        (dwarf2out_souce_line): Update prototype.
        * dwarfout.c (dwarfout_begin_function): Rename dwarfout_end_prologue.
        Change prototype, make static.
        (dwarfout_source_line): Update prototype.
        (dwarf_debug_hooks): Update.
        * dwarfout.h (dwarfout_begin_function): Remove.
        * final.c (final_start_function, final_scan_insn): Use appropriate
        debug hooks, update to use notice_source_line.
        (output_source_line): Rename notice_source_line.  Don't call the
        source_line debug hook.
        * sdbout.c (sdbout_begin_function): Rename sdbout_begin_prologue,
        make static, update prototype.
        (sdbout_mark_begin_function): Rename sdbout_begin_function, update
        prototype.
        (sdbout_end_prologue): New.
        (sdbout_source_line): Update prototype.
        (sdbout_debug_hooks): Update.
        (sdbout_symbol): Remove unused var.
        * sdbout.h (sdbout_begin_function, sdbout_mark_begin_function):
        Delete.
        * varasm.c: Include debug.h.
        (assemble_start_function): Use begin_function debug_hook.
        * xcoffout.c (xcoffout_begin_prologue): Rename xcoffout_begin_function,
        update with prototype.
        (xcoffout_source_line): Update prototype.
        * xcoffout.h (xcoffout_begin_prologue): Rename xcoffout_begin_function,
        update prototype.
        (xcoffout_source_line): Update prototype.

2001-07-17  Richard Henderson  <rth@redhat.com>

        * c-typeck.c (build_binary_op): Do not shorten unsigned
        right shift after sign extension.

Tue Jul 17 16:56:05 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * combine.c (combine_simplify_rtx): Attempt to simplify
        a*(b/c) as (a*b)/c for floats in unsafe_math mode.

        * simplify-rtx.c (avoid_constatn_pool_reference): New static function.
        (simplify_binary_operation, simplify_unary_operation,
         simplify_relational_operation): Use it.

        * combine.c (combine_simplify_rtx): Don't do associative law
        on divisions; allow associative law on floats.

2001-07-17  H.J. Lu <hjl@gnu.org>
            Rainer Orth <ro@TechFak.Uni-Bielefeld.DE>

        * c-pragma.h (HANDLE_PRAGMA_WEAK): Define iff ASM_WEAKEN_LABEL and
        ASM_OUTPUT_WEAK_ALIAS are defined.
        * defaults.h (ASM_OUTPUT_WEAK_ALIAS): Define if possible.
        * config/mips/iris6.h (ASM_OUTPUT_WEAK_ALIAS, ASM_WEAKEN_LABEL):
        Moved ...
        * config/mips/iris5.h: ... here.
        (HANDLE_SYSV_PRAGMA): Defined as 1.
        * varasm.c (weak_finish): Use ASM_OUTPUT_WEAK_ALIAS.
        * doc/tm.texi (ASM_OUTPUT_WEAK_ALIAS): Support the undefined weak
        symbol.

2001-07-17  Joseph S. Myers  <jsm28@cam.ac.uk>

        * c-parse.in (all_prefix_attributes): New variable.
        (PUSH_DECLSPEC_STACK, POP_DECLSPEC_STACK): New macros.
        (maybe_resetattrs): New production.
        (c_parse_init, datadef, fndef, datadecl, setspecs, setattrs, decl,
        maybe_type_quals_setattrs, initdecls, notype_initdecls, initdcl,
        notype_initdcl, nested_function, notype_nested_function,
        component_decl, components, components_notype,
        component_declarator, component_notype_declarator,
        absdcl_maybe_attribute, parm, firstparm, setspecs_fp, ivar_decl,
        ivars, mydecl, myparm): Update.  Avoid prefix attributes just
        after a comma being applied to more than one declarator.
        * doc/extend.texi (Attribute Syntax): Update.  Remove
        documentation of bugs that are no longer present.

2001-07-13  Eric Christopher  <echristo@redhat.com>

        * config/mips/mips.h: Change TUNE_MIPS* options to use
        mips_tune.
        (EXTRA_SPECS): Add cc1_cpu_spec.
        * config/mips/mips.md (muldf3): Fix typo.

2001-07-16  Richard Henderson  <rth@redhat.com>

        * config/m68k/m68k.c: Include expr.h and reload.h.
        (print_operand_address) [16 bit int]: Cast INTVAL to int for %d.
        [general int]: Use HOST_WIDE_INT_PRINT_DEC.

2001-07-16  Daniel Berlin  <dan@cgsoftware.com>
            Richard Henderson  <rth@redhat.com>

        * cse.c (set_live_p): Take INSN argument for cc0; update callers.
        (insn_live_p): Fix fall off end of function.
        (dead_libcall_p): Remove COUNTS argument; update callers.
        (delete_trivially_dead_insns): Remove unused variables.

2001-07-17  Andreas Jaeger  <aj@suse.de>

        * config/i386/unix.h (ASM_OUTPUT_MI_THUNK): Fix output format for
        x86-64 pic support.

        * lcm.c (optimize_mode_switching): Avoid warning for unused
        variable if !NORMAL_MODE.

        * flow.c (try_crossjump_to_edge): Remove unused variable.

2001-07-16  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * inclhack.def (ultrix_atexit_param): New hack to fix ultrix 4.3
        atexit declaration in stdlib.h.

2001-07-16  Richard Begg  <Richard.Begg@colesmyer.com.au>

        * fixinc/inclhack.def(hpux_vsnprintf): brokenness in stdio.h

Mon Jul 16 22:48:00 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * basic-block.h (CLEANUP_PRE_SIBCALL): New constant.
        * except.c (finish_eh_generation): Update call of cleanup_cfg;
        do rebuild_jump_labels instead of jump_optimize
        * sibcall.c (optimize_sibling_and_tail_recursive_call): Likewise.
        * toplev.c (rest_of_compulation): Likewise for -Wreturn_type.
        * flow.c (try_optimize_cfg): Remove unneeded code_labels.

        * flow.c: Include timevar.h
        (find_basic_block): Push/pop timevar;
        (cleanup_cfg): Likewise.
        * timevar.def (TV_CFG, TV_CLEANUP_CFG): New.
        * Makefile: Add dependencies on timevar.h

        * integrate.c (save_for_inline): Kill all BASIC_BLOCK notes.
        (copy_insn_list): Avoid killing of BASIC_BLOCK notes.

        * rtl.h (delete_trivially_dead_insns): Add new parameter.
        * toplev.c (rest_of_compilation): Update calls.
        * cse.c (set_live_p, insn_live_p, dead_libcall_p): Break out from ...
        (delete_trivially_dead_insns): ... here; accept new argument
        preserve_basic_blocks; preserve basic blocks if set.

        * reg-stack.c (stack_regs_mentioned): Return 0 if
        stack_regs_mentioned_data is not initialized.
        (reg_to_stack): Make stack_regs_mentioned survive after the
        reg-stack is completted; do not call cleanup_cfg.
        * toplev.c (rest_of_compilation): Do cleanup_cfg before bb-reorder;
        make cleanup_cfg after bb-reorder to output to debug file.

2001-07-16  Richard Henderson  <rth@redhat.com>

        * regclass.c (init_reg_sets): Use only 32 bits per initializer
        from int_reg_class_contents.

2001-07-16  Richard Henderson  <rth@redhat.com>

        * hard-reg-set.h (regs_invalidated_by_call): Declare.
        * regclass.c (regs_invalidated_by_call): Move from cse.c.
        (init_reg_sets_1): Move initialization from cse_main.
        * cse.c (regs_invalidated_by_call): Move to regclass.c.
        (cse_main): Move its initialization also.
        * df.c (df_insn_refs_record): Use regs_invalidated_by_call.
        * flow.c (propagate_one_insn): Likewise.
        * gcse.c (compute_hash_table): Likewise.
        (compute_kill_rd, compute_store_table): Likewise.
        * sched-deps.c (sched_analyze_1): Likewise.

Mon Jul 16 18:07:07 2001  J"orn Rennecke <amylaar@redhat.com>

        * gcse.c (pre_insert_copy_insn): Use gen_move_insn instead of
        gen_rtx_SET.

2001-07-16  Steve Ellcey <sje@cup.hp.com>

        * dominance.c (calc_dfs_tree_nonrec): Reverse order of tests
        in if statement so we don't access undefined memory.

2001-07-16  Daniel Berlin  <dan@cgsoftware.com>

        * gcse.c: Update comment at top.
        Update comment on mem handling.
        mem_last_set, mem_first_set, mem_set_in_block: gone.
        Declaration of reg_set_info: gone.
        (oprs_unchanged_p): Don't use mem_*set_* anymore. They are
        pointless with load_killed_in_block_p (they are *more*
        conservative then it, not less, and less accurate).
        (oprs_not_set_p): Ditto.
        (alloc_gcse_mem): Don't allocate mem_set_in_block
        (free_gcse_mem): Don't free it, either.
        (record_last_mem_set_info): Update comment in front, remove
        mem_*set_* stuff. Note the reason we don't handle stores directly
        here.
        (compute_hash_table): Update comments to reflect reality. Remove
        mem_*set_* references.
        (reset_opr_set_tables): Remove mem_*set_* references.
        (mark_call): Ditto.
        (mark_set): Ditto.  Also remove double sets of bitmaps for REG's.
        (mark_clobber): Ditto (on both parts, we double set here too).
        (expr_killed_p): Remove mem_set_in_block test.
        (compute_transp): Remove mem_set_in_block test.

        * ssa-ccp.c: (optimize_unexecutable_edges): Add note about removal
        of edge, and removal of phi alternative to dump file.
        (ssa_ccp_substitute_constants): Add note about register now being
        constant, and which uses were replaced in what insns to dump file.

2001-07-16  Andreas Jaeger  <aj@suse.de>

        * gcov.c (output_data): Use HOST_WIDEST_INT_PRINT_DEC to output
        variables of type HOST_WIDEST_INT.

        * libgcc2.c (__bb_exit_func): Handle gcov_type as long long.
        (__bb_exit_func): Correct type of count_max to avoid overflow.
        (num_digits): Handle long long argument.

        * combine.c (gen_lowpart_for_combine): Remove unused variable.

2001-07-16  Neil Booth  <neil@cat.daikokuya.demon.co.uk>

        * output.h (sdb_begin_function_line): Restore as an extern
        variable.
        * sdbout.c (sdb_begin_function_line): Make extern.

2001-07-15  Richard Henderson  <rth@redhat.com>

        * machmode.def (Pmode): Redefine if GENERATOR_FILE.
        * genrecog.c (maybe_both_true_mode): New.
        (maybe_both_true_2): Use it.
        (write_switch): Don't put Pmode in a switch.
        * rtl.c (mode arrays): Don't explicitly size them.

Sun Jul 15 14:07:36 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * toplev.c (rest_of_compilation): Fix register_life_up_to_date
        handling; move unconditional splitting before mode switching.

        * i386.md (type): Add fistp type.
        (i387, length_attr, scheduling definitions): Handle this type.
        (fix_trunc?f?i2): Revamp to use mode switching.
        (fix_trunct?f?i_nonmemory, fix_trunc?f?i_memory): New patterns.
        * i386.h (fp_cw_mode): New enum
        (OPTIMIZE_MODE_SWITCHING, NUM_MODES_FOR_MODE_SWITCHING, MODE_NEEDED,
        MODE_PRIORITY_TO_MODE, ENUM_MODE_SET): New macros.

Sun Jul 15 12:53:51 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * Makefile.in (integrate.o): Add debug.h.
        * integrate.c (debug.h): Add.
        (output_inline_function): Save, reset, and restore debug_hooks.

2001-07-15  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (alpha_emit_xfloating_compare): Use CCmode
        instead of COMPARE for the EQUIV expression.

2001-07-15  Richard Henderson  <rth@redhat.com>

        * flow.c (redirect_edge_and_branch_force): Initialize
        global_live_at_start and global_live_at_end.
        (allocate_bb_life_data): Export.
        * basic-block.h (allocate_bb_life_data): Declare.
        * toplev.c (rest_of_compilation): Call it.

2001-07-15  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.c (alpha_tablejump_addr_vec): New.
        (alpha_tablejump_best_label): New.
        * config/alpha/alpha-protos.h: Declare them.
        * config/alpha/alpha.md: Use braced strings for code blocks.
        (tablejump_osf): Break out add with r29.
        (tablejump_osf_internal): Remove.
        (tablejump_osf_nt_internal): Rename from tablejump_nt_internal,
        use alpha_tablejump_addr_vec and alpha_tablejump_best_label.

Sun Jul 15 00:53:35 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * loop.c (scan_loop): Add USEs inside PARALLELs into dependencies
        of the movable.

        * toplev.c (rest_of_compilation): Allow new pseudoes for mode switching.

        * i386-protos.h (ix86_split_fp_branch): Update prototype.
        (ix86_fp_jump_nontrivial_p): New.
        * i386.md (fp_jcc_?): Update call of split_fp_branch;
        use ix86_fp_jump_nontrivial_p.
        * i386.c (ix86_fp_jump_nontrivial_p): New.
        (ix86_split_fp_branch): Accept code instead of rtx.
        (ix86_expand_compare): Expand comparison early in case
        doing so is resonably cheap.

2001-07-15  Nick Clifton  <nickc@cambridge.redhat.com>

        * config/rs6000/sysv4.h (CPP_ENDIAN_BIG_SPEC): Assert 'endian'
        not 'machine'.
        (CPP_ENDIAN_LITTLE_SPEC): Assert 'endian' not 'machine'.
        (CPP_ENDIAN_SOLARIS_SPEC): Assert 'endian' not 'machine'.

2001-07-15  Neil Booth  <neil@daikokuya.demon.co.uk>

        * dbxout.c (dbxout_source_line): Make static, update prototype.
        (dbx_debug_hooks, xcoff_debug_hooks): Add new hooks.
        (dbxout_init, dbxout_finish, dbxout_source_line,
        dbxout_begin_block, dbxout_end_block): Update for new prototypes.
        * dbxout.h (dbxout_source_line): Delete.
        * debug.c (debug_nothing_file, debug_nothing_file_int,
        debug_nothing_file_charstar_rtx): New.
        (do_nothing_debug_hooks): Update.
        (debug_nothing_void, debug_nothing_charstar_rtx,
        dwarf2out_end_epilogue): New.
        (debug_nothing_file_charstar, debug_nothing_file_int_int): Rename.
        * debug.h (struct rtx_def): Declare.
        (gcc_debug_hooks): New hooks source_line, end_epilogue
        and end_function.
        (debug_nothing_void, debug_nothing_charstar_rtx,
        dwarf2out_end_epilogue): New.
        (debug_nothing_file_charstar, debug_nothing_file_int_int): Rename.
        * dwarf2out.c (dwarf2out_source_line): Make static, update prototype.
        (dwarf2_debug_hooks): Update.
        (dwarf2out_init, dwarf2out_finish, dwarf2out_source_line,
        dwarf2out_begin_block, dwarf2out_end_block): Update for new prototypes.
        * dwarf2out.h (dwarf2out_source_line): Remove.
        * dwarfout.c (dwarfout_end_epilogue, dwarfout_end_function):
        Make static, update prototype.
        (dwarfout_init, dwarfout_finish, dwarfout_source_line,
        dwarfout_begin_block, dwarfout_end_block): Update for new prototypes.
        (dwarf_debug_hooks): Update.
        * dwarfout.h (dwarfout_end_epilogue, dwarfout_source_line,
        dwarfout_end_function): Remove.
        * final.c (profile_function): Use debug hooks for ending functions
        and epilogues.
        (output_source_line, final_end_function): Update prototype,
        use debug hooks.
        (final_start_function, final_scan_insn): Update.
        * output.h (sdb_begin_function_line): Remove.
        (final_end_function): Update prototype.
        * sdbout.c (sdb_begin_function_line): Make static.
        (PUT_SDB_EPILOGUE_END): Move to sdbout_end_epilogue.
        (sdbout_source_line): New.
        (sdbout_end_epilogue, sdbout_end_function): Make static, update
        prototypes.
        (sdb_debug_hooks): Update.
        (sdbout_init, sdbout_source_line,
        sdbout_begin_block, sdbout_end_block): Update for new prototypes.
        * sdbout.h (sdbout_end_epilogue, sdbout_end_function): Remove.
        * toplev.c (compile_file, rest_of_compilation): Update.
        * tree.h (dwarf2out_end_epilogue): Move to debug.h.
        * xcoffout.c (xcoffout_source_line, xcoffout_begin_block,
        xcoffout_end_block, xcoffout_end_epilogue, xcoffout_end_function):
        Update for prototype changes.
        * xcoffout.h (xcoffout_source_line, xcoffout_begin_block,
        xcoffout_end_block, xcoffout_end_epilogue): Update prototypes.

2001-07-15  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.h (TARGET_ABI_OSF): New.
        (TARGET_ABI_WINDOWS_NT, TARGET_ABI_OPEN_VMS): Rename; update users.
        * config/alpha/alpha-protos.h: Update TARGET_ABI_* users.
        * config/alpha/alpha.c: Likewise.
        * config/alpha/alpha.md: Likewise.
        * config/alpha/alpha32.h: Likewise.
        * config/alpha/vms.h: Likewise.
        (OPEN_VMS): Remove.

2001-07-14  Richard Henderson  <rth@redhat.com>

        * config/alpha/alpha.md: Use define_constants for unspec values.
        Substitute throughout.

2001-07-14  Tim Josling  <tej@melbpc.org.au>

        * tree.def (EXPON_EXPR) remove. Never supported anyway.

2001-07-14  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * pa.md: Remove unused constraints from define_split's.

2001-04-14  Richard Henderson  <rth@redhat.com>

        * ifcvt.c (find_cond_trap): Test for exit block.

Sun Jul 15 00:50:20 CEST 2001  Jan Hubicka  <jh@suse.cz>

        Re-install recently reverted patch.
        * emit-rtl.c (try_split): Update mark_jump_label call.
        * flow.c (find_sub_basic_blocks): Likewise.
        * jump.c (cross_jump_death_matters, find_cross_jump, do_cross_jump,
        jump_back_p): Kill.
        (mark_all_labels): Kill second parameter.
        (jump_optimize, jump_optimize_1): Kill cross_jump parameter.
        (rebuild_jump_labels, jump_optimize_minimal): Update call
        of jump_optimize_1.
        (jump_optimize_1): Kill crossjumping code.
        (mark_jump_label): Kill cross_jump parameter.
        * rtl.h (mark_jump_label, jump_optimize): Update prototypes.
        (JUMP_CROSS_JUMP, JUMP_CROSS_JUMP_DEATH_MATTERS): Kill.
        * reg-stack.c (reg_to_stack): Do not rebuild if not needed; do
         splitting.
        * toplev.c (enum dump_file_index): Kill DFI_jump2; put DFI_stack before
        DFI_bpro.
        (dump_file_info): Likewise.
        (rest_of_compilation): Update calls to jump_optimize; kill jump2 pass;
        reorganize passes to do reg-stack first, bb-reorder second.
        * invoke.texi (-d letters doc): Remove the jump2 pass.

2001-07-14  Richard Henderson  <rth@redhat.com>

        * ifcvt.c (find_cond_trap): New.
        (find_if_header): Call it.
        (merge_if_block): Relax existing jump sanity check.
        * jump.c (jump_optimize_1): Remove conditional trap handling.

2001-07-14  Alan Modra  <amodra@bigpond.net.au>

        * config/pa/pa.c (emit_hpdiv_const): Return reg is r2 for 64-bit
        millicode.
        (insn_refs_are_delayed): Correct comment.
        * config/pa/pa.h (INSN_REFERENCES_ARE_DELAYED): Likewise.
        * config/pa/pa.md (mulsi3): If TARGET_64BIT, clobber r2
        instead of r31.  Make associated insn !TARGET_64BIT, and
        provide an additional 64-bit insn that clobbers r2.
        (divsi3): Likewise.
        (udivsi3): Likewise.
        (modsi3): Likewise.
        (umodsi3): Likewise.

Sat Jul 14 02:58:38 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * bb-reorder.c (skip_insn_after_block): Get past the line number notes.

        * flow.c (redirect_edge_and_branch_force, split_edge,
        try_crossjump_to_edge): Use set_block_for_new_insns.
        * bb-reorder.c (emit_jump_to_block_after): Call set_block_for_new_insns.

2001-07-13  H.J. Lu  (hjl@gnu.org)

        * config/elfos.h (UNIQUE_SECTION): Enable .bss section with
        the correct patch.

2001-07-13  Geoffrey Keating  <geoffk@redhat.com>

        Revert H.J. Lu's UNIQUE_SECTION patch of 2001-07-13.

2001-07-13  Joseph S. Myers  <jsm28@cam.ac.uk>

        * c-common.c (decl_attributes): Take a pointer to the node to
        which attributes are to be attached, and a flags argument.
        * c-common.h (enum attribute_flags): New.
        (decl_attributes): Update prototype.
        * c-decl.c (start_decl, push_parm_decl, finish_struct,
        finish_enum, start_function): Update calls to decl_attributes.
        * c-parse.in (component_declarator, component_notype_declarator,
        label): Update calls to decl_attributes.

Fri Jul 13 23:04:00 2001  Denis Chertykov  <denisc@overta.ru>

        * config/avr/avr.md (strlenhi): PARALLEL keyword removed.
        * config/avr/avr.c (legitimate_address_p): Return value changed
        from letter to register classes. For better debugging.

2001-07-13  Kazu Hirata  <kazu@hxi.com>

        * jump.c (reversed_comparison_code_parts): Fix comment typos.

2001-07-13  H.J. Lu  (hjl@gnu.org)

        * config/elfos.h (UNIQUE_SECTION): Enable .bss section.

2001-07-13  Marc Espie  <espie@cvs.openbsd.org>

        * config.gcc (*-*-openbsd*):  Add fragment to compile libgcc
        correctly for shared configurations.
        * config/t-libgcc-pic:  New.
        * config/{i386,m68k,sparc}/t-openbsd:  New.
        * config/openbsd.h:  Include cpu_spec in cpp_spec where needed.
        Support -shared.  Support debugging libraries with -g.
        * config/i386/openbsd.h:  Correct ASM_COMMENT_START.  Ensure dwarf2
        frame information does not emit pointer diffs.
        * config/sparc/openbsd.h:  Ensure dwarf2 frame information does not
        emit pointer diffs.

2001-07-13  Geoffrey Keating  <geoffk@redhat.com>

        Revert Jan Hubicka's patch of Fri Jul 13 14:46:21 CEST 2001.

2001-07-13  David Edelsohn  <edelsohn@gnu.org>

        * combine.c (try_combine): Ensure const_int pow2 is positive.

2001-07-13  Hartmut Penner  <hpenner@de.ibm.com>

        * config.gcc: Add configuration for s/390.
        * config/s390/s390.c: New. Subroutines for code generation.
        * config/s390/s390.h: New. Definitions for s/390.
        * config/s390/s390-protos.h: New. Prototypes.
        * config/s390/linux.h: New. Definitions for linux for s/390.
        * config/s390/linux64.h: New. Definitions for linux for zSeries.
        * config/s390/t-linux: New. Makefile fragment.
        * config/s390/s390.md: New. Machine description for s/390 and zSeries.
        * config/s390/fixdfdi.h: New. Fix L_fix*di.

Fri Jul 13 14:46:21 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * emit-rtl.c (try_split): Update mark_jump_label call.
        * flow.c (find_sub_basic_blocks): Likewise.
        * jump.c (cross_jump_death_matters, find_cross_jump, do_cross_jump,
        jump_back_p): Kill.
        (mark_all_labels): Kill second parameter.
        (jump_optimize, jump_optimize_1): Kill cross_jump parameter.
        (rebuild_jump_labels, jump_optimize_minimal): Update call
        of jump_optimize_1.
        (jump_optimize_1): Kill crossjumping code.
        (mark_jump_label): Kill cross_jump parameter.
        * rtl.h (mark_jump_label, jump_optimize): Update prototypes.
        (JUMP_CROSS_JUMP, JUMP_CROSS_JUMP_DEATH_MATTERS): Kill.
        * reg-stack.c (reg_to_stack): Do not rebuild if not needed; do
         splitting.
        * toplev.c (enum dump_file_index): Kill DFI_jump2; put DFI_stack before
        DFI_bpro.
        (rest_of_compilation): Update calls to jump_optimize; kill jump2 pass;
        reorganize passes to do reg-stack first, bb-reorder second.
        * invoke.texi (-d letters doc): Remove the jump2 pass.

2001-07-12  Steve Ellcey <sje@cup.hp.com>

        * toplev.c (compile_file): Put call of ASM_FILE_START inside ifdef.

Thu Jul 12 17:57:16 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (try_optimize_cfg): Delete whole chain of trivially dead
        basic blocks.
        (verify_flow_info): Make diagnostics prettier.

Thu Jul 12 16:48:54 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (find_basic_blocks_1): Do not emit NOP after call.

        * flow.c (outgoing_edges_match): Return early if condition reversal
        failed.

2001-07-06  Richard Sandiford  <rsandifo@redhat.com>

        * config/mips/mips.c (print_operand): Extend '%D' to memory operands.
        (mips_move_2words): When splitting a move into two instructions,
        prefix the second address operand with '%D'.

2001-07-12  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (final.o): Depend on debug.h.
        * dbxout.c (dbxout_begin_block, dbxout_end_block): New.
        (dbx_debug_hooks): Add new hooks.
        (xcoff_debug_hooks): New.
        * debug.c (debug_nothing_file_int_int): New.
        (do_nothing_debug_hooks): Update.
        * debug.h (gcc_debug_hooks): New hooks begin_block and end_block.
        (debug_nothing_file_int_int): New.
        * dwarf2out.c (dwarf2out_begin_block, dwarf2out_end_block): Make
        static, update prototype.
        (dwarf2_debug_hooks): Update.
        * dwarf2out.h (dwarf2out_begin_block, dwarf2out_end_block): Remove.
        * dwarfout.c (dwarfout_begin_block, dwarfout_end_block): Make
        static, update prototype.
        (dwarf_debug_hooks): Update.
        * dwarfout.h (dwarfout_begin_block, dwarfout_end_block): Remove.
        * final.c: Include debug.h.
        (final_scan_insn): Use debug hooks when beginning and ending blocks.
        * sdbout.c (sdbout_begin_block, sdbout_end_block): Make
        static, update prototype.
        (sdb_debug_hooks): Update.
        * sdbout.h (sdbout_begin_block, sdbout_end_block): Remove.
        * toplev.c: Distinguish between xcoff and dbx.

        * f/lex.c (ffelex_file_pop_, ffelex_file_push_, ffelex_hash_):
        Call all debug hooks, not just dwarf ones.

2001-07-11  Timothy Wall  <twall@redhat.com>

        * config.gcc: Add configuration for AIX5/IA64.
        * config/ia64/aix.h: New.  AIX5/IA64-specific configuration.
        * config/ia64/crt[in].asm: New.  Generic static ctor/dtor
        support prefix/suffix code.
        * config/ia64/t-aix: New.  Makefile fragment.
        * config/ia64/unwind-aix.c: New.  Unwind table entry lookup.

2001-07-11  Kazu Hirata  <kazu@hxi.com>

        * recog.c (validate_change): Fix a comment typo.

2001-07-11  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (c-lex.o): Wrap long lines.  Depend on debug.h.
        * c-lex.c (cb_file_change, cb_define, cb_undef): Use debug
        hooks directly.
        * dbxout.c (dbx_debug_hooks): Add new hooks.
        (dbxout_start_new_source_file): Rename dbxout_start_source_file,
        make static.
        (dbxout_resume_previous_source_file): Rename dbxout_end_source_file,
        make static.
        * dbxout.h (dbxout_start_new_source_file,
        dbxout_resume_previous_source_file): Delete.
        * debug.c (do_nothing_debug_hooks): Add new hooks.
        (debug_nothing_init_finish): Rename debug_nothing_file_charstar.
        (debug_nothing_int_charstar, debug_nothing_int): New.
        * debug.h (gcc_debug_hooks): New hooks define, undef,
        start_source_file and end_source_file.
        (debug_nothing_init_finish): Rename debug_nothing_file_charstar.
        (debug_nothing_int_charstar, debug_nothing_int): New.
        * dwarf2out.c (dwarf2_debug_hooks): Add new hooks.  Move into
        the conditionally compiled section.
        (dwarf2out_start_source_file, dwarf2out_end_source_file,
        dwarf2out_define, dwarf2out_undef): Make static.
        * dwarf2out.h (dwarf2out_start_source_file, dwarf2out_end_source_file,
        dwarf2out_define, dwarf2out_undef): Remove.
        * dwarfout.c (dwarf_debug_hooks): Add new hooks.
        (dwarfout_start_source_file, dwarfout_end_source_file,
        dwarfout_define, dwarfout_undef): Make static.
        (dwarfout_start_source_file_check,
        dwarfout_end_source_file_check): New.
        (dwarfout_define, dwarfout_finish): Update.
        * dwarfout.h (dwarfout_start_new_source_file,
        dwarfout_resume_previous_source_file, dwarfout_define,
        dwarfout_undef): Remove.
        * sdbout.c (sdb_debug_hooks): Add new hooks.
        (sdbout_start_new_source_file): Rename sdbout_start_source_file,
        make static.
        (sdbout_resume_previous_source_file): Rename sdbout_end_source_file,
        make static, take an arg.
        * sdbout.h (sdbout_start_new_source_file,
        sdbout_resume_previous_source_file): Delete.
        * toplev.c (debug_start_source_file, debug_end_source_file,
        debug_define, debug_undef): Delete.
        * toplev.h (debug_start_source_file, debug_end_source_file,
        debug_define, debug_undef): Delete.

        * java/jcf-parse.c: Include debug.h.
        (parse_class_file): Update to use debug hooks directly.
        * java/Make-lang.in (jcf-parse.o): Depend on debug.h.

Wed Jul 11 10:07:18 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * alias.c (set_mem_alias_set): New function.
        * rtl.h (set_mem_alias_set): Declare it.
        * builtins.c (expand_builtin_return_addr): Call it instead of
        using MEM_ALIAS_SET accessor.
        (expand_builtin_setjmp_setup, expand_builtin_longjmp): Likewise.
        (get_memory_rtx, expand_builtin_va_arg): Likewise.
        (expand_builtin_va_copy):Likewise.
        * caller-save.c (setup_save_areas): Likewise.
        * calls.c (compute_argument_addresses): Likewise.
        * explow.c (set_mem_attributes): Likewise.
        * expr.c (emit_single_push_insn, emit_push_insn): Likewise.
        (expand_assignment, store_constructor_field, store_field): Likewise.
        (expand_expr_unaligned): Likewise.
        * function.c (assign_stack_temp_for_type): Likewise.
        (put_reg_into_stack, gen_mem_addressof): Likewise.
        * ifcvt.c (noce_try_cmove_arith): Likewise.
        * reload1.c (reload, alter_reg): Likewise.
        * config/alpha/alpha.c (get_aligned_mem): Likewise.
        (alpha_set_memflags_1, alpha_expand_unaligned_load): Likewise.
        (alpha_expand_unaligned_store): Likewise
        (alpha_expand_unaligned_load_words): Likewise.
        (alpha_expand_unaligned_store_words): Likewise.
        (alpha_expand_block_clear, alpha_expand_prologue): Likewise.
        (alpha_expand_epilogue): Likewise.
        * config/arc/arc.c (arc_setup_incoming_varargs): Likewise.
        * config/clipper/clipper.c (clipper_builtin_saveregs): Likewise.
        * config/i386/i386.c (legitimize_pic_address): Likewise.
        * config/i960/i960.c (setup_incoming_varargs): Likewise.
        * config/ia64/ia64.c (spill_restore_mem): Likewise.
        * config/m32r/m32r.c (m32r_setup_incoming_varargs): Likewise.
        * config/m8k/m88k.c (m88k_builtin_saveregs): Likewise.
        * config/mips/mips.c (mips_va_arg): Likewise.
        * config/mn10300/mn10300.c (mn10300_builtin_saveregs): Likewise.
        * config/pa/pa.c (hppa_builtin_saveregs): Likewise.
        * config/rs6000/rs6000.c (rs6000_emit_move): Likewise.
        (setup_incoming_varargs, rs6000_va_arg): Likewise.
        (rs6000_emit_eh_toc_restore, rs6000_emit_prologue): Likewise.
        (rs6000_emit_epilogue): Likewise.
        * config/sh/sh.c (sh_builtin_saveregs): Likewise.
        * config/sparc/sparc.c (sparc_va_arg): Likewise.
        * config/v850/v850.c (v850_va_arg): Likewise.

Wed Jul 11 21:27:25 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (merge_blocks_move_successor_nojumps): Do not crash
        when fallthru edge is present.
        (mege_blocks): Handle case where creation of jump insn
        is required.

        * basic-block.h (CLEANUP_EXPENSIVE, CLEANUP_CROSSJUMP,
        CLEANUP_POST_REGSTACK): New constants.
        * except.c (finish_eh_generation): Update call of cleanup_cfg,
        * jump.c (rtx_renumbered_equal_p): Handle 't' fields.
        * output.h (cleanup_cfg): Update prototype.
        * reg-stack.c (reg_to_stack): Use cleanup_cfg instead of jump_optimize
        * sibcall.c (optimize_sibling_and_tail_recursive_call): Update
        cleanup_cfg call; kill missleading comment.
        * toplev.c (rest_of_compilation): Update all cleanup_cfg calls.
        * flow.c (merge_blocks, try_optimize_cfg, cleanup_cfg): Accept mode
        parameter; control optimizations performed using it.
        (flow_find_cross_jump, outgoing_edges_match, try_crossjump_to_edge,
        try_crossjump_bb): New functions.

2001-07-11  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * pa.c (pa_output_function_prologue): Delete prototype.  Make function
        extern.
        * pa.h (ASM_OUTPUT_MI_THUNK): Rename output_function_prologue to
        pa_output_function_prologue.
        * pa-protos.h (pa_output_function_prologue): New prototype.

2001-07-11  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * stmt.c (emit_case_nodes): Widen high and low instead of new_bound
        and low to get correct sign extension in low+high test.

2001-07-11  Janis Johnson <janis@us.ibm.com>

        * gcov.c (arcdata): Use gcov_type to fix branch percentage
        for large hit count.

        * profile.c (branch_prob): Fix .bbg info for computed gotos
        and C++ EH code.

2001-07-11  Mark Mitchell  <mark@codesourcery.com>

        * stmt.c (parse_output_constraint): New function, split out
        from ...
        (expand_asm_operands): ... here.  Use parse_output_constraint.
        * tree.h (parse_output_constraint): Declare it.

2001-07-11  Richard Henderson  <rth@redhat.com>

        * bitmap.c: Comment some functions; fiddle whitespace.
        (bitmap_free): Don't export.
        (bitmap_element_allocate): Use memset.
        * bitmap.h (bitmap_free): Don't declare.

2001-07-11  Daniel Berlin  <dan@cgsoftware.com>

        * gcse.c, lcm.c, sched-deps.c:
        s/free on sbitmap vectors/sbitmap_vector_free on sbitmap vectors/g

        * flow.c (flow_loops_find): Free dom if we found no loops, since
        we aren't going to save it.

        * lcm.c (pre_edge_rev_lcm): Free st_antin, st_antout when we are
        done.

Wed Jul 11 09:00:48 2001  Jeffrey A Law  (law@cygnus.com)

        * ssa-ccp.c (ssa_fast_dce): Free worklist when completed.

Wed Jul 11 10:07:18 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * dwarf2out.c (dwarf2out_init, dwarf2out_finish): Add dummy version
        #ifndef DWARF2_DEBUGGING_INFO.

2001-07-11  Richard Sandiford  <rsandifo@redhat.com>

        * simplify-rtx.c (simplify_gen_subreg): Return null for QUEUED rtxes.

2001-07-11  Richard Sandiford  <rsandifo@redhat.com>

        * config/mips/mips.c (gen_int_relational): Tell the caller not to
        reverse a branch if a NE comparison is implemented with GTU.

2001-07-11  Richard Sandiford  <rsandifo@redhat.com>
            H.J. Lu  <hjl@gnu.org>

        * mips.md (call_internal1): Use CONSTANT_ADDRESS_P to check for
        constant addresses.
        (call_internal2): Likewise.
        (call_value_internal1): Likewise.
        (call_value_internal2): Likewise.
        (call_value_multiple_internal1): Likewise.
        (call_value_multiple_internal2): Likewise.

2001-07-10  Kazu Hirata  <kazu@hxi.com>

        * calls.c (emit_library_call_value_1): Fix a comment typo.
        * dwarf2out.c (mem_loc_descriptor): Likewise.
        * config/i386/i386.c (ix86_expand_aligntest): Likewise.

2001-07-11  David Billinghurst <David.Billinghurst@riotinto.com>

        * simplify-rtx.c (simplify_subreg): Fix typo in comment

Tue Jul 10 07:27:53 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * recog.c (offsettable_address_p): Handle LO_SUM case.
        * config/mips/mips.c (double_memory_operand): Use adjust_address_nv
        instead of plus_constant.

2001-07-10  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * reload1.c (merge_assigned_reloads): After a RELOAD_OTHER merge,
        fix setting of the reloads of that reload to RELOAD_FOR_OTHER_ADDRESS.

Tue Jul 10 07:27:53 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * config/rs6000/rs6000.c (print_operand, case 'L', 'Y', 'Z'): Use
        adjust_address_nv instead of plus_constant.

2001-07-10  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (toplev.o, sdbout.o, dbxout.o, dwarfout.o,
        dwarf2out.o): Depend on debug.h, wrap long lines.
        * dbxout.c: Include debug.h.
        (dbx_debug_hooks): New.
        (dbxout_init): Make static, take just 2 args.
        (dbxout_finish): Make static.
        * dbxout.h (dbxout_init, dbxout_finish): Delete.
        * debug.c: New file.
        * debug.h: New file.
        * dwarf2out.c: Include debug.h.
        (dwarf2_debug_hooks): New.
        (dwarf2out_init): Make static.
        (dwarf2out_finish): Make static, take 2 args.
        * dwarf2out.h (dwarf2out_init, dwarf2out_finish): Delete.
        * dwarfout.c: Include debug.h.
        (dwarf_debug_hooks): New.
        (dwarfout_init): Make static.
        (dwarfout_finish): Make static, take 2 args.
        * dwarfout.h (dwarfout_init, dwarfout_finish): Delete.
        * sdbout.c: Include debug.h.
        (sdb_debug_hooks): New.
        (sdbout_init): Make static, take 2 args.
        * sdbout.h (sdbout_init): Delete.
        * toplev.c: Include debug.h.
        (debug_hooks): New.
        (compile_file): Set deubg_hooks based on command line options.
        Use the hooks unconditionally rather than conditional compilation.

Tue Jul 10 09:04:45 2001  Jeffrey A Law  (law@cygnus.com)

        * ssa-ccp.c (first_phi_node): Remove.  Replace uses with calls to
        first_insn_after_basic_block_note instead.

        * df.c (df_bb_refs_unlink): #if 0 out for now.

2001-07-10  David Billinghurst <David.Billinghurst@riotinto.com

        * ssa.h: Add prototype for ssa_const_prop
        * ssa-ccp.c: Add prototype for ssa_fast_dce and mark_references
        (ssa_ccp_substitute_constants): Fix signed vs unsigned comparison
        (ssa_fast_dce): Remove unused variable

2001-07-10  Gabriel Dos Reis  <gdr@merlin.codesourcery.com>

        * diagnostic.c (finish_diagnostic): Rename to
        diagnostic_finish. Make it take an 'output_buffer *'.  Adjust
        calls thourghout.

2001-07-10  Jason Merrill  <jason_merrill@redhat.com>

        * dwarf2out.c (dwarf2out_line): Emit -dA comment even when we have
        .loc support.

        * collect2.c (main): Set COLLECT_NO_DEMANGLE for subprocesses.
        (dump_file): Only pad the demangled name with spaces if the
        mangled name was padded with spaces.

2001-07-10  Bernd Schmidt  <bernds@redhat.com>

        * bb-reorder.c (make_reorder_chain_1): Correct branch/fallthru
        edge detection.

Tue Jul 10 07:27:53 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * expr.c (expand_expr, case COMPONENT_REF): Don't force using bitfield
        extraction if no direct load if either EXPAND_CONST_ADDRESS or
        EXPAND_INITIALIZER.

        * emit-rtl.c (adjust_address, adjust_address_nv): Change criteria for
        whether can put offset inside LO_SUM to check mode alignment, not size.

2001-07-10  Gabriel Dos Reis  <gdr@merlin.codesourcery.com>

        * doc/tm.texi (Misc): Fix thinko.

2001-07-10  Jan van Male  <jan.vanmale@fenk.wau.nl>

        * regmove.c (replace_in_call_usage): Fix warnings.
        * sched-deps.c (add_dependence): Fix warnings.
        * simplify-rtx.c (simplify_subreg): Likewise.
        Return NULL_RTX instead of NULL.

        * reg-stack.c (emit_swap_insn): Eliminate warnings.
        (subst_asm_stack_regs): Likewise.

        * combine.c (num_sign_bit_copies): Cast bitwidth to int to avoid
        warnings.

        * dwarf2out.c (output_call_frame_info): Declare i as int.
        (build_abbrev_table): Declare n_alloc as int.
        (dwarf2out_finish): Initialize die.
        * except.c: Declare sjlj_funcdef_number as unsigned.
        (connect_post_landing_pads): Declare j as unsigned.
        (convert_to_eh_region_ranges): Initialize call_site.
        (output_function_exception_table): Initialize tt_format_size.
        * expr.c (move_by_pieces_1): Initialize to1.
        (store_constructor): Initialize minelt and maxelt.
        * flow.c (mark_regs_live_at_end): Declare i as unsigned.
        * function.c (instantiate_decls): Avoid signed/unsigned warning.

        * c-decl.c (combine_parm_decls): Unused, remove.
        * c-tree.h: Remove prototype for combine_parm_decls.

        * reload.c (push_reload): Fix warning.
        (regno_clobbered_p): Likewise.
        * reload1.c (replace_pseudos_in_call_usage): Likewise.
        (reload_combine): Likewise.

        * bitmap.c: Rename bitmap_zero to bitmap_zero_bits to fix warnings.
        * bitmap.h: Rename bitmap_zero to bitmap_zero_bits to fix
        warnings.
        * bitmap.c (bitmap_operation): Change user.
        * bitmap.h (EXECUTE_IF_AND_COMPL_IN_BITMAP): Likewise.

2001-07-10  Eric Christopher  <echristo@redhat.com>

        * config/mips/mips.c (override_options): Fix typo.

2001-07-09  Stan Shebs  <shebs@apple.com>

        * target.h (struct gcc_target): New fields init_builtins and
        expand_builtin.
        * target-def.h (TARGET_INIT_BUILTINS): New macro.
        (TARGET_EXPAND_BUILTIN): New macro.
        (TARGET_INITIALIZER): Add them.
        * builtins.c: Include target.h.
        (expand_builtin): Use targetm.expand_builtin.
        (default_init_builtins): New function.
        (default_expand_builtin): New function.
        * expr.h (default_init_builtins): Declare.
        (default_expand_builtin): Declare.
        * c-common.c (c_common_nodes_and_builtins): Use
        targetm.init_builtins.
        * defaults.h (MD_INIT_BUILTINS): Remove.
        * Makefile.in (builtins.o): Depend on target.h.

        * config/arm/arm.c (TARGET_INIT_BUILTINS): Define.
        (TARGET_EXPAND_BUILTIN): Define.
        * config/arm/arm.h (MD_INIT_BUILTINS): Remove.
        (MD_EXPAND_BUILTIN): Remove.

        * config/c4x/c4x.c (TARGET_INIT_BUILTINS): Define.
        (TARGET_EXPAND_BUILTIN): Define.
        (c4x_init_builtins): Make endlink arg a local.
        (c4x_print_operand): Fix typos in adjust_address usages.
        * config/c4x/c4x-protos.h (c4x_init_builtins): Update decl.
        * config/c4x/c4x.h (MD_INIT_BUILTINS): Remove.
        (MD_EXPAND_BUILTIN): Remove.

        * config/i386/i386.c (TARGET_INIT_BUILTINS): Define.
        (TARGET_EXPAND_BUILTIN): Define.
        (ix86_init_mmx_sse_builtins): New function, was ix86_init_builtins.
        (ix86_init_builtins): Call new function only if TARGET_MMX.
        * config/i386/i386-protos.h (ix86_init_mmx_sse_builtins): Declare.
        * config/i386/i386.h (MD_INIT_BUILTINS): Remove.
        (MD_EXPAND_BUILTIN): Remove.

        * config/ia64/ia64.c (TARGET_INIT_BUILTINS): Define.
        (TARGET_EXPAND_BUILTIN): Define.
        * config/ia64/ia64.h (MD_INIT_BUILTINS): Remove.
        (MD_EXPAND_BUILTIN): Remove.

        * doc/tm.texi: Document these changes.

2001-07-09  Diego Novillo  <dnovillo@redhat.com>

        * basic-block.h (tree_node): Forward declare if needed.
        (struct basic_block_def): Add fields 'head_tree' and 'end_tree'.
        (BLOCK_HEAD_TREE): Define.
        (BLOCK_END_TREE): Define.
        (struct loops): Rename field 'tree' to 'tree_root'.
        * flow.c (entry_exit_blocks): Add initializers for 'head_tree' and
        'end_tree'.
        (flow_loops_tree_build): Rename reference to field 'tree' to
        'tree_root'.
        (flow_loops_level_compute): Ditto.
        * predict.c (estimate_bb_frequencies): Ditto.
        * tree.h (struct tree_common): Add field 'aux'.

2001-07-09  Stan Shebs  <shebs@apple.com>

        * config/darwin.c (darwin_encode_section_info): Don't mark any
        DECL_EXTERNAL node as defined.

2001-07-09  John David Anglin  <dave@hiauly1.hia.nrc.ca>

        * pa.c (pa_init_machine_status, pa_mark_machine_status,
        pa_free_machine_status, hppa_init_pic_save): Delete.
        (hppa_pic_save_rtx): New.  Use get_hard_reg_initial_val.
        (hppa_profile_hook): Use hppa_pic_save_rtx.
        * pa.h (struct machine_function, PIC_OFFSET_TABLE_SAVE_RTX,
        hppa_init_pic_save): Delete.
        (hppa_pic_save_rtx): Declare.
        * pa.md (call, call_value, sibcall, sibcall_value,
        builtin_setjmp_receiver): Use hppa_pic_save_rtx.

2001-07-09  Kazu Hirata  <kazu@hxi.com>

        * config/h8300/t-h8300 (LIB1ASMFUNCS): Add _floatdisf and _fixsfdi.
        * config/mn10200/t-mn10200 (LIB1ASMFUNCS): Likewise.

2001-07-09  Andreas Jaeger  <aj@suse.de>

        * output.h: Add declaration of final_forward_branch_p.

        * config/i386/i386.c (output_fix_trunc): Remove unused variable.

        * varray.c: Include errors.h for internal_error and trim_filename
        declarations.

        * Makefile.in (varray.o): Add errors.h.

2001-07-09  Toon Moene  <toon@moene.indiv.nluug.nl>

        * expr.h: Adjust prototypes for have_add2_insn, have_sub2_insn.
        * optabs.c (have_add2_insn): Check whether the add insn chosen
        really accepts the operands.  (have_sub2_insn): Ditto for sub insn.
        * reload1.c (reload_cse_move2add): Adjust calls of have_add2_insn.

Mon Jul  9 13:26:40 2001  Jeffrey A Law  (law@cygnus.com)

        * Makefile.in (OBJS): Add ssa-ccp.o
        (ssa-ccp.o): Add dependencies.
        * toplev.c (DFI_ssa_ccp): New dump file enum.
        (dump_file): Add entry for dumping after SSA CCP.
        (flag_ssa_ccp): New flag variable.
        (f_options): Add -fssa-ccp.
        (rest_of_compilation): Run SSA CCP if requested.
        * timevar.def (TV_SSA_CCP): New timevar.
        * ssa.c (mark_phi_and_copy_regs): Handle deleted PHI nodes.
        * doc/gcc.texi (Passes): Add documentation for SSA CCP pass.
        Fix minor typo in SSA DCE documentation.
        * doc/invoke.texi: Add documentation for new flag -fssa-ccp.
        Add documentation for new dump option.  Renumber dump files
        appropriately.

Mon Jul  9 21:36:00 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * emit-rtl.c (gen_highpart_mode): New.
        * rtl.h (gen_highpart_mode): Declare.
        * sparc.md (insn splitters): Use gen_highpart_mode, whenever the
        operand can be VOIDmode constant.

Mon Jul  9 17:23:10 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (redirect_edge_and_branch_force): New.
        (can_fallthru): Ensure that basic blocks are succeeding.
        (try_optimize_cfg): Do not delete basic block if it is the last one.

        * flow.c (try_redirect_by_replacing_jump): Do not remove
        jumps with side effects, unlink chain on fallthru edge;
        set block for new jump instruction; avoid basic block to
        over by line number note.

        * flow.c (try_simplify_condjump): Verify that the condjump
        is not always falling trought.

        Re-install patch:
        * flow.c (try_redirect_by_replacing_jump): Remove cc0 setter.

        * flow.c (forwarder_block_p): Fix for fallthru blocks.
        (try_redirect_by_replacing_jump): Update properly the count
        and frequency information.

Mon Jul  9 06:41:07 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * emit-rtl.c (adjust_address, adjust_address_nv): Handle an
        address that is a LO_SUM specially.
        * explow.c (plus_constant_wide, case LO_SUM): Deleted.

        * c-lang.c (start_cdtor): Remove extra parameter from start_function.

        * emit-rtl.c (adjust_address_nv, replace_equiv_address_nv): New fcns.
        (operand_subword): Use them.
        (change_address_1): Renamed from change_address; new arg VALIDATE.
        * expr.h: Reflect above changes; change_address now macro.
        * alias.c (canon_rtx): Use replace_equiv_address_nv instead of
        making MEM.
        * cselib.c (add_mem_for_addr): Likewise.
        * expr.c (protect_from_queue, emit_move_insn_1): Likewise.
        * regmove.c (try_apply_stack_adjustment): Likewise.
        * reload.c (push_reload, make_memloc): Likewise.
        * reload1.c (eliminate_regs): Likewise.
        * simplify-rtx.c (simplify_replace_rtx): Likewise.
        * caller-save.c (setup_save_areas): Use adjust_address_nv instead of
        adjust_addess.
        * combine.c (make_extraction, simplify_shift_const): Likewise.
        (gen_lowpart_for_combine): Likewise.
        * cse.c (gen_lowpart_if_possible): Likewise.
        * function.c (fixup_var_refs_1, purge_addressof_1): Likewise.
        * expr.c (expand_expr, case COMPONENT_REF): Likewise.
        * optabs.c (gen_move_insn): Likewise.
        * reload1.c (alter_reg): Likewise.
        * simplify-rtx.c (simplify_subreg): Likewise.
        * stmt.c (expand_anon_union_decl): Likewise.
        * recog.c (validate_replace_rtx_1): Likewise.
        (expr.h): Include.
        * Makefile.in (recog.o): Add $(EXPR_H).
        * explow.c (stabilize): Call replace_equiv_address.
        * expr.c (move_by_pieces_1, store_by_pieces_2): Likewise.
        * final.c (alter_subreg): OFFSET is HOST_WIDE_INT.

2001-07-03  Andrew Haley  <aph@redhat.com>

        * expmed.c (store_fixed_bit_field): Don't use a mode bigger than
        the mode of the memory location.

2001-07-09  Bo Thorsen  <bo@suse.co.uk>

        * config/i386/unix.h (ASM_OUTPUT_MI_THUNK): Fix x86-64 vtable support.

2001-07-09  Neil Booth  <neil@daikokuya.demon.co.uk>

        * final.c (output_addr_const): Use target opening and
        closing parentheses.
        * target-def.h: Define TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN
        defaults, add to TARGET_ASM_OUT.
        * target.h (struct gcc_target): Add open_paren and close_paren.
        * doc/md.texi: Update.
        * doc/tm.texi: Document TARGET_ASM_FUNCTION_END_PROLOGUE,
        TARGET_ASM_FUNCTION_BEGIN_EPILOGUE, TARGET_ASM_OPEN_PAREN and
        TARGET_ASM_CLOSE_PAREN.
        * config/i386/i386.c (TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN):
        Override.
        * config/pdp11/pdp11.c (TARGET_ASM_OPEN_PAREN, TARGET_ASM_CLOSE_PAREN):
        Override.
        * config/1750a/1750a.h (ASM_OPEN_PAREN, ASM_CLOSE_PAREN): Remove.
        * config/a29k/a29k.h: Similarly.
        * config/alpha/alpha.h: Similarly.
        * config/arc/arc.h: Similarly.
        * config/arm/aof.h: Similarly.
        * config/arm/aout.h: Similarly.
        * config/avr/avr.h: Similarly.
        * config/c4x/c4x.h: Similarly.
        * config/clipper/clipper.h: Similarly.
        * config/convex/convex.h: Similarly.
        * config/d30v/d30v.h: Similarly.
        * config/dsp16xx/dsp16xx.h: Similarly.
        * config/elxsi/elxsi.h: Similarly.
        * config/fr30/fr30.h: Similarly.
        * config/h8300/h8300.h: Similarly.
        * config/i370/i370.h: Similarly.
        * config/i386/i386.h: Similarly.
        * config/i860/i860.h: Similarly.
        * config/i960/i960.h: Similarly.
        * config/ia64/ia64.h: Similarly.
        * config/m32r/m32r.h: Similarly.
        * config/m68hc11/m68hc11.h: Similarly.
        * config/m68k/m68k.h: Similarly.
        * config/m88k/m88k.h: Similarly.
        * config/mcore/mcore.h: Similarly.
        * config/mips/mips.h: Similarly.
        * config/mn10200/mn10200.h: Similarly.
        * config/mn10300/mn10300.h: Similarly.
        * config/ns32k/ns32k.h: Similarly.
        * config/pa/pa.h: Similarly.
        * config/pdp11/pdp11.h: Similarly.
        * config/pj/pj.h: Similarly.
        * config/romp/romp.h: Similarly.
        * config/rs6000/rs6000.h: Similarly.
        * config/sh/sh.h: Similarly.
        * config/sparc/sparc.h: Similarly.
        * config/v850/v850.h: Similarly.
        * config/vax/vax.h: Similarly.
        * config/we32k/we32k.h: Similarly.

2001-07-09  Joseph S. Myers  <jsm28@cam.ac.uk>

        * doc/c-tree.texi: Document representation of attributes.

2001-07-08  Joseph S. Myers  <jsm28@cam.ac.uk>

        * doc/tm.texi: Update some places for the rename of target to
        targetm.  Fix typo.

2001-07-08  Joseph S. Myers  <jsm28@cam.ac.uk>

        * target.h (struct gcc_target): Add insert_attributes.
        * target-def.h (TARGET_INSERT_ATTRIBUTES): Define.
        (TARGET_INITIALIZER): Update.
        * tree.c, tree.h (default_insert_attributes): New function.
        Update comments on other default functions to refer to targetm,
        not target.
        * doc/tm.texi (INSERT_ATTRIBUTES): Update to document
        TARGET_INSERT_ATTRIBUTES.
        (SET_DEFAULT_DECL_ATTRIBUTES): Remove.
        * c-common.c (decl_attributes): Use targetm.insert_attributes.
        Don't use PRAGMA_INSERT_ATTRIBUTES.
        * Makefile.in (c-common.o): Depend on $(TARGET_H).
        * c-decl.c (start_decl, start_function): Don't call
        SET_DEFAULT_DECL_ATTRIBUTES.
        * config/c4x/c4x.h (SET_DEFAULT_DECL_ATTRIBUTES): Don't define.
        * config/c4x/c4x-protos.h (c4x_set_default_attributes): Don't
        declare.
        * config/c4x/c4x.c (TARGET_INSERT_ATTRIBUTES): Define.
        (c4x_check_attribute): Avoid modifying attribute list itself.
        (c4x_set_default_attributes): Rename to c4x_insert_attributes.
        Make static.
        * config/sh/sh.h (PRAGMA_INSERT_ATTRIBUTES): Don't define.
        * config/sh/sh-protos.h (sh_pragma_insert_attributes): Don't
        declare.
        * config/sh/sh.c (TARGET_INSERT_ATTRIBUTES): Define.
        (sh_pragma_insert_attributes): Rename to sh_insert_attributes.
        Make static.
        * config/v850/v850.h (SET_DEFAULT_DECL_ATTRIBUTES): Don't define.
        * config/v850/v850-protos.h (v850_set_default_decl_attr): Don't
        declare.
        * config/v850/v850.c (TARGET_INSERT_ATTRIBUTES): Define.
        (v850_set_default_decl_attr): Rename to v850_insert_attributes.
        Adjust parameters.  Make static.

2001-07-08  Joseph S. Myers  <jsm28@cam.ac.uk>

        * c-common.c (decl_attributes): Only take a single attributes
        parameter.
        * c-common.h (decl_attributes): Update prototype.
        * c-decl.c (start_decl, start_function): Only take a single
        attributes parameter.  Update calls to decl_attributes.
        (finish_struct, finish_enum): Update calls to decl_attributes.
        (push_parm_decl): Expect unified list of attributes.  Update call
        to decl_attributes.
        * c-parse.in (fndef, initdcl, notype_initdcl, nested_function,
        notype_nested_function, component_declarator,
        component_notype_declarator, label): Update calls to
        decl_attributes.
        (absdcl_maybe_attribute, parm, firstparm, myparm): Unify attribute
        lists that are passed to push_parm_decl.
        * c-tree.h (start_function, start_decl): Update prototypes.
        * config/sh/sh-protos.h, config/sh/sh.c
        (sh_pragma_insert_attributes): Only take a single attributes
        parameter.
        * config/sh/sh.h (PRAGMA_INSERT_ATTRIBUTES): Likewise.
        * doc/tm.texi (INSERT_ATTRIBUTES): Update.
        * objc/objc-act.c (define_decl, generate_objc_symtab_decl,
        build_module_descriptor, generate_static_references,
        generate_strings, build_selector_translation_table,
        generate_descriptor_table, generate_protocols,
        generate_ivars_list, generate_dispatch_table,
        generate_protocol_list, generate_category,
        generate_shared_structures, really_start_method, add_objc_decls,
        generate_classref_translation_entry): Update calls to start_decl
        and start_function.
        (build_tmp_function_decl, start_method_def): Unify attribute lists
        that are passed to push_parm_decl.

2001-07-08  Neil Booth  <neil@daikokuya.demon.co.uk>

        * final.c (no_asm_to_stream): New.
        (final_scan_insn): Use target structures for prologue ends
        and epilogue starts.
        * output.h (no_asm_to_stream): New.
        * target-def.h (TARGET_ASM_FUNCTION_END_PROLOGUE,
        TARGET_ASM_FUNCTION_BEGIN_EPILOGUE): New.
        (TARGET_ASM_OUT): Update.
        * target.h (struct gcc_target): New members function_end_prologue
        and function_begin_epilogue.
        * config/1750/1750.h (ASM_OUTPUT_FUNNAM): Delete as unused.
        * config/alpha/alpha-protos.h (output_end_prologue): Delete.
        * config/alpha/alpha.c (output_end_prologue): Rename to
        alpha_output_function_end_prologue.  Use in target struct
        and make static.
        * config/alpha/alpha.h (FUNCTION_END_PROLOGUE): Delete.
        * config/ia64/ia64-protos.h (ia64_output_end_prologue): Delete.
        * config/ia64/ia64.c (ia64_output_end_prologue): Rename to
        ia64_output_function_end_prologue.  Use in target struct
        and make static.
        (ia64_function_prologue, ia64_funciton_epilogue): Rename
        mistyped prototypes.
        * config/ia64/ia64.h (FUNCTION_END_PROLOGUE): Delete.
        * config/m88k/m88k-protos.h (m88k_end_prologue, m88k_begin_epilogue):
        Delete.
        * config/m88k/m88k.c (m88k_end_prologue, m88k_begin_epilogue): Rename
        an use in target struct, make static.
        * config/ia64/ia64.h (FUNCTION_END_PROLOGUE, FUNCTION_BEGIN_EPILOGUE):
        Delete.

2001-07-08  Richard Henderson  <rth@redhat.com>

        * stmt.c (emit_case_nodes): Convert modes properly in low+high test.

2001-07-08  Richard Henderson  <rth@redhat.com>

        * config/i386/i386.md: Remove constraints strings from define_split
        and define_peephole2 patterns.
        (eh_return_si, eh_return_di): Split eh_return_1 for modes.
        (eh_return): Use them.

2001-07-08  Richard Henderson  <rth@redhat.com>

        * doc/tm.texi (Exception Handling): New subnode of Stack and Calling.
        Document MD_FALLBACK_FRAME_STATE_FOR.

2001-07-07  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.c (m68hc11_initial_elimination_offset):
        Take into account m68hc11_sp_correction for FRAME_POINTER_REGNUM
        elimination.
        * config/m68hc11/m68hc11.h (STARTING_FRAME_OFFSET): Use 0.

2001-07-07  Nick Clifton  <nickc@cambridge.redhat.com>

        * config/ia64/sysv4.h (ASM_OUTPUT_LABELREF): Append # to end
        of the label inside NAME as opposed to just the end of NAME.

2001-07-07  Neil Booth  <neil@daikokuya.demon.co.uk>

        * config/alpha/alpha-protos.h (vms_valid_decl_attribute_p): Delete.
        * config/alpha/alpha.c (alpha_init_machine_status,
        alpha_mark_machine_status, alpha_free_machine_status): Delete.
        (TARGET_VALID_DECL_ATTRIBUTE): Define for VMS.
        (vms_valid_decl_attribute_p): Make static, conditionally compile.
        * config/alpha/alpha.h (VALID_MACHINE_DECL_ATTRIBUTE): Delete.

2001-07-06  Stan Shebs  <shebs@apple.com>

        * target.h (targetm): Rename global from "target", so as not to
        conflict with local variables.
        * c-decl.c: Ditto.
        * c-typeck.c: Ditto.
        * final.c: Ditto.
        * tree.c: Ditto.
        * cp/decl.c: Ditto.
        * cp/decl2.c: Ditto.
        * cp/typeck.c: Ditto.
        * 1750a/1750a.c: Ditto.
        * a29k/a29k.c: Ditto.
        * arc/arc.c: Ditto.
        * arm/arm.c: Ditto.
        * avr/avr.c: Ditto.
        * clipper/clipper.c: Ditto.
        * convex/convex.c: Ditto.
        * d30v/d30v.c: Ditto.
        * dsp16xx/dsp16xx.c: Ditto.
        * elxsi/elxsi.c: Ditto.
        * fr30/fr30.c: Ditto.
        * h8300/h8300.c: Ditto.
        * i370/i370.c: Ditto.
        * i386/i386.c: Ditto.
        * i860/i860.c: Ditto.
        * i960/i960.c: Ditto.
        * ia64/ia64.c: Ditto.
        * m32r/m32r.c: Ditto.
        * m68hc11/m68hc11.c: Ditto.
        * m68k/m68k.c: Ditto.
        * m88k/m88k.c: Ditto.
        * mips/mips.c: Ditto.
        * ns32k/ns32k.c: Ditto.
        * pa/pa.c: Ditto.
        * pdp11/pdp11.c: Ditto.
        * romp/romp.c: Ditto.
        * rs6000/rs6000.c: Ditto.
        * sh/sh.c: Ditto.
        * sparc/sparc.c: Ditto.
        * vax/vax.c: Ditto.
        * we32k/we32k.c: Ditto.
        * doc/tm.texi: Update the manual to match.

2001-07-06  Richard Henderson  <rth@redhat.com>

        * except.h (MUST_USE_SJLJ_EXCEPTIONS): Examine the value of
        DWARF2_UNWIND_INFO not just whether it is defined.

2001-07-06  Diego Novillo  <dnovillo@redhat.com>

        * combine.c (combine_simplify_rtx): Also recompute 'mode' if the
        call to simplify_binary_operation returns a new pattern.

2001-07-06  Roman Lechtchinsky  <rl@cs.tu-berlin.de>

        * glimits.h (__SHRT_MAX__): New.
        (SHRT_MIN, USHRT_MAX): Define in terms of SHRT_MAX.
        (SHRT_MAX): Define in terms of __SHRT_MAX__.

2001-07-06  Jan van Male  <jan.vanmale@fenk.wau.nl>

        * alias.c (base_alias_check): Cast GET_MODE_UNIT_SIZE to int to
        avoid warnings.

2001-07-06  Richard Henderson  <rth@redhat.com>

        * bitmap.c (bitmap_release_memory): Move adjacent to the
        allocation functions.
        (bitmap_first_set_bit, bitmap_last_set_bit): Streamline knowing
        the implementation.  Binary search for the set bit.
        (bitmap_union_of_diff): Allocate the temporary on the stack
        instead of using xmalloc.

2001-07-06  Richard Henderson  <rth@redhat.com>

        * genrecog.c (validate_pattern): Warn for constraints in
        define_{expand,split,peephole2}.  Remove strict_low_part
        before looking up match_dup.

2001-07-06  DJ Delorie  <dj@redhat.com>

        * doc/gcc.texi (Makefile): Rename to be a more general purpose
        chapter about various build hints and history.  Add section
        talking about the various types of native and cross builds.

2001-07-06  Neil Booth  <neil@daikokuya.demon.co.uk>

        * Makefile.in (final.o): Depend on target.h.
        * final.c: Include target.h.
        (default_function_pro_epilogue): New.
        (final_start_function): Use target structure for function prologues.
        (final_end_function): Use target structure for function epilogues.
        * fold-const.c (real_hex_to_f): Constify s and p.
        * output.h (default_function_pro_epilogue): New.
        * real.h (real_hex_to_f): Update prototype.
        * target-def.h (TARGET_ASM_FUNCTION_PROLOGUE,
        TARGET_ASM_FUNCTION_EPILOGUE, TARGET_ASM_OUT): New.
        (TARGET_INITIALIZER): Update.
        * target.h (gcc_target): Add struct asm_out.
        * doc/tm.texi: Update.

config:
        Update each arch to use TARGET_ASM_FUNCTION_PROLOGUE and
        TARGET_ASM_FUNCTION_EPILOGUE.  Move macro code to functions
        in cpu/cpu.c, or rename old functions consistently.  Take
        a HOST_WIDE INT not an int as the SIZE parameter.  Remove now
        redundant macros and prototypes.  Make new functions static.

        * 1750a/1750a.c: Similarly.
        * 1750a/1750a.h: Similarly.
        * a29k/a29k-protos.h: Similarly.
        * a29k/a29k.c: Similarly.
        * a29k/a29k.h: Similarly.
        * arc/arc-protos.h: Similarly.
        * arc/arc.c: Similarly.
        * arc/arc.h: Similarly.
        * arm/arm-protos.h: Similarly.
        * arm/arm.c: Similarly.
        * arm/arm.h: Similarly.
        * avr/avr-protos.h: Similarly.
        * avr/avr.c: Similarly.
        * avr/avr.h: Similarly.
        * clipper/clipper-protos.h: Similarly.
        * clipper/clipper.c: Similarly.
        * clipper/clipper.h: Similarly.
        * convex/convex.c: Similarly.
        * convex/convex.h: Similarly.
        * d30v/d30v-protos.h: Similarly.
        * d30v/d30v.c: Similarly.
        * d30v/d30v.h: Similarly.
        * d30v/d30v.md: Similarly.
        * dsp16xx/dsp16xx-protos.h: Similarly.
        * dsp16xx/dsp16xx.c: Similarly.
        * dsp16xx/dsp16xx.h: Similarly.
        * elxsi/elxsi.c: Similarly.
        * elxsi/elxsi.h: Similarly.
        * fr30/fr30.c: Similarly.
        * fr30/fr30.md: Similarly.
        * h8300/h8300-protos.h: Similarly.
        * h8300/h8300.c: Similarly.
        * h8300/h8300.h: Similarly.
        * i370/i370-protos.h: Similarly.
        * i370/i370.c: Similarly.
        * i370/i370.h: Similarly.
        * i386/i386.c: Similarly.
        * i386/osf1elf.h: Similarly.
        * i386/osfrose.h: Similarly.
        * i860/i860-protos.h: Similarly.
        * i860/i860.c: Similarly.
        * i860/i860.h: Similarly.
        * i960/i960-protos.h: Similarly.
        * i960/i960.c: Similarly.
        * i960/i960.h: Similarly.
        * ia64/ia64-protos.h: Similarly.
        * ia64/ia64.c: Similarly.
        * ia64/ia64.h: Similarly.
        * m32r/m32r-protos.h: Similarly.
        * m32r/m32r.c: Similarly.
        * m32r/m32r.h: Similarly.
        * m68hc11/m68hc11-protos.h: Similarly.
        * m68hc11/m68hc11.c: Similarly.
        * m68hc11/m68hc11.h: Similarly.
        * m68k/crds.h: Similarly.
        * m68k/dpx2.h: Similarly.
        * m68k/m68k-protos.h: Similarly.
        * m68k/m68k.c: Similarly.
        * m68k/m68k.h: Similarly.
        * m68k/news.h: Similarly.
        * m88k/m88k-protos.h: Similarly.
        * m88k/m88k.c: Similarly.
        * m88k/m88k.h: Similarly.
        * mips/mips-protos.h: Similarly.
        * mips/mips.c: Similarly.
        * mips/mips.h: Similarly.
        * ns32k/merlin.h: Similarly.
        * ns32k/ns32k.c: Similarly.
        * ns32k/ns32k.h: Similarly.
        * ns32k/tek6000.h: Similarly.
        * pa/pa-protos.h: Similarly.
        * pa/pa.c: Similarly.
        * pa/pa.h: Similarly.
        * pdp11/2bsd.h: Similarly.
        * pdp11/pdp11-protos.h: Similarly.
        * pdp11/pdp11.c: Similarly.
        * pdp11/pdp11.h: Similarly.
        * romp/romp-protos.h: Similarly.
        * romp/romp.c: Similarly.
        * romp/romp.h: Similarly.
        * rs6000/rs6000-protos.h: Similarly.
        * rs6000/rs6000.c: Similarly.
        * rs6000/rs6000.h: Similarly.
        * rs6000/sysv4.h: Similarly.
        * sh/sh-protos.h: Similarly.
        * sh/sh.c: Similarly.
        * sh/sh.h: Similarly.
        * sparc/sparc-protos.h: Similarly.
        * sparc/sparc.c: Similarly.
        * sparc/sparc.h: Similarly.
        * vax/vax.c: Similarly.
        * vax/vax.h: Similarly.
        * vax/vms.h: Similarly.
        * we32k/we32k.c: Similarly.
        * we32k/we32k.h: Similarly.

Fri Jul  6 11:47:59 2001  Jeffrey A Law  (law@cygnus.com)

        * basic-block.h (first_insn_after_basic_block_note): Declare.
        * flow.c (first_insn_after_basic_block_note): Define.  Moved
        from...
        * ssa.c (first_insn_after_basic_block_note): Remove.
        * ssa-dce.c (find_inherently_necessary): Consider BARRIERs
        necessary.
        (ssa_eliminate_dead_code): Properly update the CFG and PHI
        nodes when we find a dead conditional branch.  Insert BARRIERs
        after any blocks with no successors, but which do not have
        any BARRIERs.

2001-07-06  Zack Weinberg  <zackw@stanford.edu>

        * varray.c (varray_check_failed): Use internal_error.

2001-07-05  Andrew Haley  <aph@redhat.com>

        * Makefile.in (LIB2_DIVMOD_FUNCS): New.
        (LIB2FUNCS): Move divmod functions to LIB2_DIVMOD_FUNCS.
        * mklibgcc.in: Compile LIB2_DIVMOD_FUNCS.

2001-07-02  Jason Merrill  <jason_merrill@redhat.com>

        * dwarf2out.c (mem_loc_descriptor): Only look through a constant pool
        reference if the target constant is also a SYMBOL_REF.

2001-07-05  Eric Christopher  <echristo@redhat.com>

        * config/mips/mips.h (MASK_MIPS3900): Remove.
        (MASK_MIPS16,MASK_NO_CHECK_ZERO_DIV,MASK_CHECK_RANGE_DIV,
        MASK_UNINIT_CONST_IN_RODATA): Change for 3900 mask removal.
        (TARGET_MIPS3900): Change to use mips_arch.
        (TARGET_MIPS4000): New.
        (TARGET_MIPS4100): New.
        (TARGET_MIPS4300): New.
        (TARGET_SWITCHES): Change 3900 and 4650 options to NULL.
        (SUBTARGET_TARGET_OPTIONS): Add -march. Change help text
        for -mipsX.
        (GENERATE_BRANCHLIKELY): Move TARGET_MIPS3900.
        (ISA_HAS_BRANCHLIKELY): To here.
        (CC1_CPU_SPEC):  New.
        (CC1_SPEC): Use here.  Remove 4650 and 3900 options.
        (mips_arch_string): Declare.
        (mips_arch): Declare.
        (TARGET_OPTIONS): Add -march and -mtune.

        * config/mips/mips.c (mips_arch_string): New.
        (mips_arch): New.
        (override_options): Handle -march for codegen and -mtune
        for scheduling. Use mips_arch. Move tx39 target default here.
        (mips_parse_cpu): Move error message to override_options.

        * config/mips/r3900.h (TARGET_DEFAULT): Remove.

        * config/mips/mips.md: Use TARGET_MIPS4000 and TARGET_MIPS4300.

        * doc/invoke.texi (Option Summary): Add -march and -mtune entries.
        (MIPS Options): Ditto.  Change mcpu entry to historical text.

2001-07-05  H.J. Lu  (hjl@gnu.org)

        * config/mips/mips.c (mips_parse_cpu): New function to parse
        -march=*/-mcpu=*.

2001-07-05  Jim Wilson  <wilson@redhat.com>

        * config/ia64/lib1funcs.asm: Revert 2001-07-02 change.
        * config/ia64/t-ia64: Likewise.
        (LIB1ASMFUNCS): Update comment.

2001-07-05  David Edelsohn  <edelsohn@gnu.org>

        * doc/install.texi (Install GCC: Binaries): Fix typo.

2001-07-04  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.md ("*ashlsi3"): Operand 1 can be a memory
        reference using the stack pointer, adjust it since we push Y
        temporarily.
        ("*ashrsi3"): Likewise.
        ("*lshrsi3"): Likewise.

2001-07-05  Stephane Carrez  <Stephane.Carrez@worldnet.fr>

        * config/m68hc11/m68hc11.h (RETURN_ADDR_RTX): Fix return address
        when -fomit-frame-pointer is used.

2001-07-05  Jeffrey Oldham  <oldham@codesourcery.com>

        * flow.c: Reverse Jan Hubicka's patch of 02July2001.
        (try_redirect_by_replacing_jump): Reverse updating properly the
        count and frequency information.  Reverse removing cc0 setter.
        (forwarder_block_p): Reverse fixing for fallthru blocks.

2001-07-05  DJ Delorie  <dj@redhat.com>

        * gcc.c (TARGET_OPTION_TRANSLATE_TABLE): New.
        (translate_options): If the above is defined, use it to map
        given options to new options.
        * doc/tm.texi: Document it.

2001-07-05  Brad Lucier <lucier@math.purdue.edu>
            Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * doc/invoke.texi (Optimize Options): Document that -fgcse may
        cause programs using computed gotos to run more slowly.

2001-07-05  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * doc/install.texi (Specific): Markup, spelling and typo fixes.
        Fixed sorting.
        Consistently require binutils 2.11.2, not prereleases.
        (Specific, decstation-*): Canonicalize as mips-dec-*.
        (Specific, i?86-*-sco3.2v5*): Remove make bootstrap requirement,
        always necessary.
        (Specific, m68k-altos): Removed reference to README.altos, deleted.
        (Specific, mips-*): Reword MIPS C compiler requirements.
        (Specific, powerpc*-*-*): New, mention --with-cpu once.
        (Specific, sunv5): Removed, obsolete.

2001-07-05  Nathan Sidwell  <nathan@codesourcery.com>

        * dwarf2out.c (output_loc_list): Use an all ones mask for
        .text asm output and don't rely on long long
        literals. Reformat some long lines.

2001-07-05  Andreas Jaeger  <aj@suse.de>

        * doc/gcc.texi (GNU/Linux): Remove accidental re-add of GPL
        section.

2001-07-04  Daniel Berlin  <dan@cgsoftware.com>

        * dwarf2out.c (dwarf2out_define): Update comment.
        (dwarf2out_undef): Ditto.
        (dwarf2out_start_source_file): Ditto.
        (dwarf2out_end_source_file): Ditto.
        (dwarf2out_finish): Output DW_MACINFO_end_file for primary file,
        since we never call the start/end debug hook for the primary file.

2001-07-04  Kazu Hirata  <kazu@hxi.com>

        * config/h8300/h8300.c (get_shift_alg): Remove an extra operand
        from shll.

2001-07-04  Nathan Sidwell  <nathan@codesourcery.com>

        * cppinit.c (remove_dup_dirs): Inform if a system include
        directory is being reordered.
        * doc/invoke.texi (Directory Options): GCC warns if you hide a
        system include.
        * doc/cpp.texi (Search Paths): Likewise.
        * doc/gcc.texi (Interoperation): Remove information about
        -I/usr/include.

2001-07-04  Nathan Sidwell  <nathan@codesourcery.com>

        * varray.h (VARRAY_TOP_GENERIC_PTR): Remove spurious parameter.
        (VARRAY_TOP_CHAR_PTR): Likewise.

2001-07-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * gcc.c (process_command): Don't assign elements of a const char*.

Wed Jul  4 13:40:02 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * emit-rtl.c (change_address): Don't abort if invalid address while
        reload is in progress.

2001-07-04  Daniel Berlin  <dan@cgsoftware.com>

        * c-lex.c (cb_file_change): Pass line number to
        debug_start_source_file.
        (cb_undefine): Pass correct line number to debug_undef.

        * toplev.c (debug_start_source_file): Add line number to
        parameters. Pass it along to dwarf2out_start_source_file.
        (decode_g_option): Stop resetting debug level back to normal when
        we change debug formats, unless the current level is
        none. (Before, -g3 -gdwarf-2 would use debug level 2, rather than
        3).

        * toplev.h (debug_start_source_file): Add line number to
        parameters.

        * dwarf2out.h (dwarf2out_start_source_file): Add line number to
        parameters.

        * dwarf2out.c (dwarf2out_start_source_file): Add line number to
        parameters.
        Output debug_macinfo data for starting file if requested.
        (dwarf2out_end_source_file): Output debug_macinfo data for ending
        file if requested.
        (dwarf2out_define): Output debug_macinfo data for defining a macro
        if requested.
        (dwarf2out_undef): Output debug_macinfo data for undefining a
        macro if requested.
        (DEBUG_MACINFO_SECTION): New. DWARF2 macro info section name.
        (DEBUG_MACINFO_SECTION_LABEL): New. DWARF2 macro info section label.
        (macinfo_section_label): New. DWARF2 macro info section label.
        (dwarf2out_init): If we want macro info, output the start label
        for the section.
        (dwarf2out_finish): If we want macro info, add a DW_AT_macro_info
        attribute to the compilation unit die pointing to the macro info.

2001-07-04  Daniel Berlin  <dan@cgsoftware.com>

        * dwarf2out.c (new_loc_list): Move to inside #ifdef
        DWARF2_DEBUGGING_INFO.
        (add_loc_descr_to_loc_list): Ditto.
        (output_loc_list): Ditto.
        Also, fix thinko in curr not being initialized.
        (gen_internal_sym): Ditto.

Wed Jul  4 13:40:02 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * emit-rtl.c (replace_equiv_address): New function.
        * expr.h (replace_equiv_address): New declaration.
        * explow.c (validize_mem): Call it instead of change_address and
        also call if -fforce-addr and address is constant.
        * expr.c: Replace more calls to change_address with adjust_address
        and/or replace_equiv_address or to validize_mem.
        * function.c, regmove.c, config/alpha/alpha.c: Likewise.
        * config/arm/arm.md, config/clipper/clipper.md: Likewise.
        * config/dsp16xx/dsp16xx.md, config/fr30/fr30.c: Likewise.
        * config/i370/i370.md, config/i860/i860.md: Likewise.
        * config/i960/i960.md, config/mips/mips.c: Likewise.
        * config/mips/mips.md, config/pa/pa.md: Likewise.
        * config/pdp11/pdp11.md, config/rs6000/rs6000.c: Likewise.
        * config/rs6000/rs6000.md, config/sh/sh.md: Likewise.

2001-07-04  Kaveh R. Ghazi  <ghazi@caip.rutgers.edu>

        * bitmap.c (bitmap_union_of_diff): Don't use BITMAP_ALLOCA.

        * bitmap.h (BITMAP_ALLOCA): Don't pass alloca as an argument to a
        function.

2001-07-04  Joseph S. Myers  <jsm28@cam.ac.uk>

        * doc/include: New directory.
        * doc/fdl.texi: Move to doc/include/fdl.texi.
        * doc/texinfo.tex: Move to doc/include/texinfo.tex.
        * doc/include/funding.texi, doc/include/gpl.texi: New files.
        * doc/gcc.texi: Use funding.texi and gpl.texi.
        * Makefile.in ($(docdir)/cpp.info, $(docdir)/gcc.info,
        $(docdir)/cppinternals.info, cpp.dvi. gcc.dvi. cppinternals.dvi):
        Update dependencies and use -I $(docdir)/include.

2001-07-04  Anthony Green  <green@redhat.com>

        * config/v850/t-v850 (v850-c.o): Add missing dependencies.

2001-07-04  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * doc/install.texi (sparc64-*-*): Remove garbage.

Wed Jul  4 09:07:44 2001  Jan van Male  <jan.vanmale@fenk.wau.nl>

        * i386.c (ix86_expand_builtin, case IX86_BUILTIN_SETPS):
        Fix typo in last change to use adjust_address.

2001-07-04  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * doc/install.texi (Specific): Update information for *-*-solaris*.

Tue Jul  3 22:33:15 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * explow.c (plus_constant_wide): Reinitialize Y for restart.

2001-07-03  Stan Shebs  <shebs@apple.com>

        * config/darwin.h (SECTION_FUNCTION): Remove WAS_TEXT argument, remove
        case for flag_no_mach_text_sections.
        (EXTRA_SECTION_FUNCTIONS): Remove arg from uses of SECTION_FUNCTION.
        * config/darwin.c (flag_no_mach_text_sections): Remove.
        * config/darwin-protos.h (darwin_init_pragma): Remove decl.

Tue Jul  3 15:35:52 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * explow.c (plus_constant_wide, case PLUS): Call find_constant_term
        and avoid checking for constant as first operand.
        * recog.c (find_constant_term_loc): No longer static.
        (adj_offettable_operand): Delete.
        * rtl.h (adj_offsettable_operand): Delete declaration.
        (find_constant_term): Add declaration.
        * caller-save.c: Replace calls to adj_offsettable_operand with calls
        to adjust_address.
        * config/arm/arm.c, config/c4x/c4x.c: Likewise.
        * config/clipper/clipper.md, config/h8300/h8300.c: Likewise.
        * config/i386/i386.c, config/i386/i386.md: Likewise.
        * config/i860/i860.c, config/i960/i960.c: Likewise.
        * config/i960/i960.md, config/m68hc11/m68hc11.c: Likewise.
        * config/m68k/m68k.c, config/m68k/m68k.md: Likewise.
        * config/m88k/m88k.md, config/mcore/mcore.c: Likewise.
        * config/mips/mips.c, config/mips/mips.md: Likewise.
        * config/mn10200/mn10200.c, config/mn10300/mn10300.c: Likewise.
        * config/ns32k/ns32k.c, config/ns32k/ns32k.md: Likewise.
        * config/pa/pa.c, config/pdp11/pdp11.c: Likewise.
        * config/pdp11/pdp11.md, config/sh/sh.c, config/v850/v850.c: Likewise.
        * config/vax/vax.md, config/ns32k/ns32k.c: Likewise.
        * config/ns32k/ns32k.md: Likewise.

2001-07-03  Zack Weinberg  <zackw@stanford.edu>

        * rtl.c (copy_rtx): Handle 'T' format letter.
        * gensupport.c (collect_insn_data): Likewise.
        * print-rtl.c (print_rtx): Print 'T' slots like 's'.

2001-07-03  Nick Clifton  <nickc@cambridge.redhat.com>

        * doc/invoke.texi (Directory Options): Specifiy range for <N> in
        -B option.  Use 'dir' not 'foo' as example directory name.

2001-07-03  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * config/i386/sol2.h (ASM_PREFERRED_EH_DATA_FORMAT): Define.
        Fixes PRs bootstrap/3067, bootstrap/3249, bootstrap/3275.

2001-07-03  Joseph S. Myers  <jsm28@cam.ac.uk>

        * doc/cppinternals.texi: Improve formatting and logical markup.

2001-07-03  Andreas Jaeger  <aj@suse.de>

        * Makefile.in (insn-recog.o): Add dependency on reload.h.

        * genrecog.c (write_header): Include reload.h for prototypes in
        insn-recog.c.

2001-07-03  Neil Booth  <neil@daikokuya.demon.co.uk>

config:
        * i386/cygwin.h (VALID_MACHINE_DECL_ATTRIBUTE,
        VALID_MACHINE_TYPE_ATTRIBUTE): Remove.
        * i386/i386-protos.h (i386_pe_valid_decl_attribute_p,
        i386_pe_valid_type_attribute_p): Add.
        * i386/i386.c (TARGET_INITIALIZER): Override for cygwin targets.
        * i386/winnt.c (i386_valid_decl_attribute_p): Return directly.

Mon Jul  2 21:52:19 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * explow.c (plus_constant_wide, case LO_SUM): New case.
        (plus_constant_for_output_wide): Delete.
        * rtl.h (plus_constant_for_output): Delete.
        * alias.c (canon_rtx, init_alias_analysis): Call plus_constant
        instead of plus_constant_for_output.
        * recog.c (offsettable_address_p, adj_offsettable_operand): Likewise.
        * config/darwin.c, config/arm/arm.c, config/m68k/m68k.c: Likewise.
        * config/m88k/m88k.c, config/mips/mips.c, config/pa/pa.c: Likewise.
        * config/rs6000/rs6000.c, config/sparc/sparc.c: Likewise.
        * config/sparc/sparc.md: Likewise.
        Convert some change_address calls to adjust_address.

2001-07-03  Joseph S. Myers  <jsm28@cam.ac.uk>

        * doc/extend.texi, doc/gcc.texi, doc/invoke.texi, doc/md.texi,
        doc/rtl.texi, doc/tm.texi: Improve formatting.  Improve
        documentation of -std and -Wwrite-strings.

2001-07-02  Geoffrey Keating  <geoffk@redhat.com>

        * cse.c (canon_hash): Don't register registers in very small
        register classes, as extending their lifetime might cause
        reload to fail.

Mon Jul  2 23:14:00 CEST 2001  Jan Hubicka  <jh@suse.cz>

        * flow.c (try_redirect_by_replacing_jump): Remove cc0 setter.

        * flow.c (forwarder_block_p): Fix for fallthru blocks.
        (try_redirect_by_replacing_jump): Update properly the count
        and frequency information.

Mon Jul  2 14:20:13 2001  Jeffrey A Law  (law@cygnus.com)

        * toplev.c (dump_file_index): Move SSA dumps just after first
        jump dump.
        (dump_file): Corresponding changes.
        (rest_of_compilation): Move SSA path to just after the first
        jump pass.
        * doc/gcc.texi (Passes): Update due to movement of SSA path.
        * doc/invoke.texi: Update dump file #s as they were completely
        out of date with reality.

2001-07-02  Geoffrey Keating  <geoffk@redhat.com>

        * doc/tm.texi (Frame Layout): Document STACK_PUSH_CODE.

        * expr.c (emit_move_insn_1): Deal with non-default
        STACK_PUSH_CODE.

        * expr.c (emit_single_push_insn): Fix warning.

2001-07-02  Toshiyasu Morita  <toshiyasu.morita@hsa.hitachi.com>

        * expr.c (emit_move_insn_1): Avoid modifying
        cfun->expr->x_stack_pointer when PUSH_ROUNDING is defined.

Mon Jul  2 15:33:31 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * emit-rtl.c (adjust_address): New function.
        * expr.h (adjust_address): Add declaration.
        * builtins.c: Replace some calls to change_address with calls to it
        or to validize_mem.
        * caller-save.c, dwarf2out.c, except.c, expmed.c, expr.c: Likewise.
        * function.c, config/a29k/a29k.md, config/alpha/alpha.c: Likewise.
        * config/arm/arm.c, config/convex/convex.c: Likewise.
        * config/dsp16xx/dsp16xx.md, config/fr30/fr30.c: Likewise.
        * config/i386/i386.c, config/i386/i386.md: Likewise.
        * config/ia64/ia64.c, config/ia64/ia64.md: Likewise.
        * config/m32r/m32r.c, config/m68k/m68k.md: Likewise.
        * config/m88k/m88k.c, config/mips/mips.md: Likewise.
        * config/ns32k/ns32k.c, config/rs6000/rs6000.c: Likewise.
        * config/sh/sh.c, config/sparc/sparc.md: Likewise.

2001-07-02  Jim Wilson  <wilson@redhat.com>

        * config/ia64/ia64.h: Delete obsolete lib1funcs.asm comment.

2001-07-02  Steve Ellcey  <sje@cup.hp.com>

        * config/ia64/t-ia64: Change LIB1ASMFUNCS to use single underscore.
        * config/ia64/lib1funcs.asm: Change macro names to match t-ia64.

2001-07-02  Zack Weinberg  <zackw@stanford.edu>

        * cppinit.c (lang_defaults): New table.
        (set_lang): Just read from lang_defaults into the live options
        structure.

2001-07-02  Zack Weinberg  <zackw@stanford.edu>

        * Makefile.in (doc): Depend on $(GENERATED_MANPAGES).
        * doc/.cvsignore: Add gcc.1, cpp.1, gcov.1.
        * doc/gcc.1, doc/cpp.1, doc/gcov.1: Removed.

2001-07-02  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * doc/install.texi: Various spelling and markup fixes.
        (Installing GCC): Component specific installation instructions are
        gone.
        Fix reference.
        Warn about removing old install dir in the presence of shared libs.
        (Configuration): Invoke with options target to match configure
        --help.
        Consistently refer to gas, gld pathnames.
        Invert --enable-multilib documentation.
        Remove references to old compiler versions.

Mon Jul  2 12:50:51 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * flow.c (try_simplify_condjump): Fix typo in updating fallthru flags.

2001-07-02  Rainer Orth  <ro@TechFak.Uni-Bielefeld.DE>

        * doc/install.texi (Specific, mips*-sgi-irix4): Split from IRIX 5
        section.
        (Specific, mips*-sgi-irix5): Note IDO download.
        Reworded MIPS C hints.
        Use GNU as instead of GAS.
        Markup fixes.
        Removed SGI Freeware reference, IRIX 6 only.
        (Specific, mips*-sgi-irix6): Removed ranlib caveats, obsolete.
        Note N64 library requirement/workaround.
        Update O32 hints.
        Complete list of structure passing bug victims.

2001-07-02  Gerald Pfeifer  <pfeifer@dbai.tuwien.ac.at>

        * doc/install.texi: Remove CVS Id.

2001-07-02  Andreas Jaeger  <aj@suse.de>

        * ssa-dce.c (note_inherently_necessary_set): Add unused attribute.
        (find_inherently_necessary): Remove unused variable.

2001-07-02  Nathan Sidwell  <nathan@codesourcery.com>

        * c-common.h (TDI_inlined): New ast dump phase.
        (dump_flag_name): New function.
        * c-dump.c (dump_files): Add inlined phase.
        (dump_flag_name): Define.
        * doc/invoke.texi (-fdump-ast-inlined): Document.

Mon Jul  2 06:29:36 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * stor-layout.c (layout_decl): Revert change to handling of alignment
        in packed types.

Sun Jul  1 11:53:52 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * c-common.c (decl_attributes, case A_MODE): Don't call layout_decl
        for FIELD_DECL.

2001-07-01  Geoffrey Keating  <geoffk@redhat.com>

        * doc/tm.texi (FUNCTION_ARG): Document that the last call
        is special.

2001-07-01  Nathan Sidwell  <nathan@codesourcery.com>

        * tlink.c (recompile_files): Remove COMPILER_PATH and
        LIBRARY_PATH from the environment.

2001-07-01  Zack Weinberg  <zackw@stanford.edu>

        * c-common.h (enum rid): Add RID_FIRST_AT, RID_LAST_AT,
        RID_LAST_PQ.  Move RID_FIRST_PQ down with the other FIRST/LAST
        enumerators.
        (OBJC_IS_AT_KEYWORD, OBJC_IS_PQ_KEYWORD): New macros.

        * c-parse.in (OBJC_STRING): Kill.
        (objc_string): Decompose to [objc_string] '@' STRING.
        (reswords): Take the leading '@' off all the Objective C keywords.
        (objc_rid_sans_at): Kill.
        (init_reswords): Don't initialize it.
        (yylexname): Use OBJC_IS_AT_KEYWORD and OBJC_IS_PQ_KEYWORD.
        (_yylex): Kill reconsider label.  Look ahead one token after
        an '@'; if we get an identifier, check whether it's an
        Objective C @-keyword.  If so, return the keyword.  Otherwise,
        put back the token and return the '@' as a terminal.

        * cpplib.c (lex_macro_node): Remove unnecessary check for
        leading '@' on identifier.  Clarify control flow and commentary.

Sun Jul  1 11:53:52 2001  Richard Kenner  <kenner@vlsi1.ultra.nyu.edu>

        * cse.c (new_label_ref): Variable deleted.
        (insert): Remove set of new_label_ref.
        (check_for_label_ref): New function.
        (cse_basic_block): Don't check new_label_ref; call check_for_label_ref.

See ChangeLog.5 for earlier changes.