+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.
(__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>
(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 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.
+ * 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>
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.
+ in comments and documentation.
2001-08-03 Neil Booth <neil@cat.daikokuya.demon.co.uk>
2001-08-01 Robert Lipe <robertl@caldera.com>
- * dwarfout.c: Remove reference to README.DWARF.
+ * dwarfout.c: Remove reference to README.DWARF.
2001-08-01 Andrew MacLeod <amacleod@redhat.com>
2001-08-01 Ziemowit Laski <zlaski@apple.com>
- * c-parse.in (OBJC_NEED_RAW_IDENTIFIER): Define macro and flag for
+ * 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.
2001-07-31 Jeff Sturm <jsturm@one-point.com>
- * except.c (duplicate_eh_regions): Test n_array[i] for NULL.
+ * except.c (duplicate_eh_regions): Test n_array[i] for NULL.
2001-07-31 matthew green <mrg@eterna.com.au>
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.
+ * 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>
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.
+ * flow.c (merge_blocks): Return 1 if an extra jump is inserted.
2001-07-30 Richard Henderson <rth@redhat.com>
2001-07-30 Andreas Jaeger <aj@suse.de>
- * jump.c: Add prototype for mark_modified_reg.
+ * jump.c: Add prototype for mark_modified_reg.
- * cse.c (set_live_p): Add unused attribute.
+ * 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.
+ * 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.
+ * predict.c: Fix typos and grammar.
* gcse.c (insert_insn_end_bb): Remove unused variables.
Fri Jul 27 00:33:35 EDT 2001 John Wehle (john@feith.com)
- * flow.c (redirect_edge_and_branch_force): Test
+ * flow.c (redirect_edge_and_branch_force): Test
target->global_live_at_start.
2001-07-26 Richard Henderson <rth@redhat.com>
2001-07-26 Catherine Moore <clm@redhat.com>
- * config/v850/v850.h (ENCODE_SECTION_INFO): Change order
- of conditional to avoid tree checking errors.
+ * config/v850/v850.h (ENCODE_SECTION_INFO): Change order
+ of conditional to avoid tree checking errors.
2001-07-26 Kazu Hirata <kazu@hxi.com>
2001-07-25 Catherine Moore <clm@redhat.com>
- * config/v850/v850.c (v850_va_arg): Use addr
- instead of valist to build incr.
+ * 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>
2001-07-24 Joel Sherrill <joel@OARcorp.com>
- * config/sparc/rtems.h (CPP_PREDEFINES): Remove redundant
+ * 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
+ * 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>
}
/* Assume that the preceeding pass has possibly eliminated jump instructions
- or converted the unconditional jumps. Eliminate the edges from CFG. */
+ or converted the unconditional jumps. Eliminate the edges from CFG.
+ Return true if any edges are eliminated. */
-void
+bool
purge_dead_edges (bb)
basic_block bb;
{
edge e, next;
rtx insn = bb->end;
+ bool purged = false;
+
if (GET_CODE (insn) == JUMP_INSN && !simplejump_p (insn))
- return;
+ return false;
if (GET_CODE (insn) == JUMP_INSN)
{
- int removed = 0;
rtx note;
edge b,f;
/* We do care only about conditional jumps and simplejumps. */
if (!any_condjump_p (insn)
&& !returnjump_p (insn)
&& !simplejump_p (insn))
- return;
+ return false;
for (e = bb->succ; e; e = next)
{
next = e->succ_next;
if (e->dest == EXIT_BLOCK_PTR
&& returnjump_p (insn))
continue;
- removed = 1;
+ purged = true;
remove_edge (e);
}
- if (!bb->succ || !removed)
- return;
+ if (!bb->succ || !purged)
+ return false;
if (rtl_dump_file)
fprintf (rtl_dump_file, "Purged edges from bb %i\n", bb->index);
if (!optimize)
- return;
+ return purged;
/* Redistribute probabilities. */
if (!bb->succ->succ_next)
{
note = find_reg_note (insn, REG_BR_PROB, NULL);
if (!note)
- return;
+ return purged;
b = BRANCH_EDGE (bb);
f = FALLTHRU_EDGE (bb);
b->probability = INTVAL (XEXP (note, 0));
b->count = bb->count * b->probability / REG_BR_PROB_BASE;
f->count = bb->count * f->probability / REG_BR_PROB_BASE;
}
- return;
+ return purged;
}
+
+ /* Cleanup abnormal edges caused by throwing insns that have been
+ eliminated. */
+ if (! can_throw_internal (bb->end))
+ for (e = bb->succ; e; e = next)
+ {
+ next = e->succ_next;
+ if (e->flags & EDGE_EH)
+ {
+ remove_edge (e);
+ purged = true;
+ }
+ }
+
/* If we don't see a jump insn, we don't know exactly why the block would
have been broken at this point. Look for a simple, non-fallthru edge,
as these are only created by conditional branches. If we find such an
for (e = bb->succ; e && (e->flags & (EDGE_COMPLEX | EDGE_FALLTHRU));
e = e->succ_next);
if (!e)
- return;
+ return purged;
for (e = bb->succ; e; e = next)
{
next = e->succ_next;
if (!(e->flags & EDGE_FALLTHRU))
- remove_edge (e);
+ remove_edge (e), purged = true;
}
if (!bb->succ || bb->succ->succ_next)
abort ();
if (rtl_dump_file)
fprintf (rtl_dump_file, "Purged non-fallthru edges from bb %i\n",
bb->index);
- return;
+ return purged;
}
-/* Search all basic blocks for potentionally dead edges and purge them. */
+/* Search all basic blocks for potentionally dead edges and purge them.
+
+ Return true ifif some edge has been elliminated.
+ */
-void
+bool
purge_all_dead_edges ()
{
- int i;
+ int i, purged = false;
for (i = 0; i < n_basic_blocks; i++)
- purge_dead_edges (BASIC_BLOCK (i));
+ purged |= purge_dead_edges (BASIC_BLOCK (i));
+ return purged;
}
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