Remove duplicate function call in test

* testsuite/backward/strstream_move.cc: Remove duplicate function
call.

From-SVN: r259843

PR libstdc++/69608 Move semantics for strstreambuf

In libstdc++ the deprecated char* streams are non-copyable, as was
required pre-C++11.

Since C++11 the standard implies that those streams should be copyable,
but doesn't specify the effects of copying them. This is surely a
defect, so for consistency with other implementations this change makes
them movable, but not copyable.

PR libstdc++/69608
* include/backward/strstream (strstreambuf): Define move constructor
and move assignment operator.
(istrstream, ostrstream, strstream): Likewise.
* testsuite/backward/strstream_move.cc: New.

From-SVN: r259842

re PR tree-optimization/85597 (internal compiler error: in compute_live_loop_exits, at tree-ssa-loop-manip.c:229)

2018-05-02  Richard Biener  <rguenther@suse.de>

PR tree-optimization/85597
* tree-vect-stmts.c (vectorizable_operation): For ternary SLP
do not use split vect_get_vec_defs call but call vect_get_slp_defs
directly.

* gcc.dg/vect/pr85597.c: New testcase.

From-SVN: r259840

[testsuite] Add scan-ltrans-tree-dump

2018-05-02  Tom de Vries  <tom@codesourcery.com>

PR testsuite/85106
* gcc.dg/ipa/ipa-icf-38.c: Use scan-ltrans-tree-dump.
* lib/scanltranstree.exp: New file.
* lib/target-supports.exp (scan-ltrans-tree-dump_required_options)
(scan-ltrans-tree-dump-times_required_options)
(scan-ltrans-tree-dump-not_required_options)
(scan-ltrans-tree-dump-dem_required_options)
(scan-ltrans-tree-dump-dem-not_required_options): New proc.
* lib/gcc-dg.exp: Include scanltranstree.exp.

* testsuite/lib/libatomic.exp: Include scanltranstree.exp.

* testsuite/lib/libgomp.exp: Include scanltranstree.exp.

* testsuite/lib/libitm.exp: Include scanltranstree.exp.

* testsuite/lib/libvtv.exp: Include scanltranstree.exp.

* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
dump files): Add ltrans-tree.

From-SVN: r259838

[testsuite] Add scan-wpa-ipa-dump

2018-05-02  Tom de Vries  <tom@codesourcery.com>

PR testsuite/85106
* gcc.dg/ipa/ipa-icf-38.c: New test.
* gcc.dg/ipa/ipa-icf-38a.c: New test.
* lib/scandump.exp (dump-base): New proc.
(scan-dump, scan-dump-times, scan-dump-not, scan-dump-dem)
(scan-dump-dem-not): Add and handle parameter for suffix of the dump
base.
* lib/scanipa.exp: Add "" argument to scan-dump calls.
* lib/scanlang.exp: Same.
* lib/scanrtl.exp: Same.
* lib/scantree.exp: Same.
* lib/scanwpaipa.exp: New file.
* lib/gcc-dg.exp: Include scanwpaipa.exp.

* testsuite/lib/libatomic.exp: Include scanwpaipa.exp.

* testsuite/lib/libgomp.exp: Include scanwpaipa.exp.

* testsuite/lib/libitm.exp: Include scanwpaipa.exp.

* testsuite/lib/libvtv.exp: Include scanwpaipa.exp.

* doc/sourcebuild.texi (Commands for use in dg-final, Scan optimization
dump files): Add wpa-ipa.

From-SVN: r259837

rs6000: Remove paired single

This removes paired single (used on the 750CL and friends).  It was
deprecated in GCC 8.  Removing it means we only have one vector model
to deal with (VMX+VSX, 16-byte vectors).

* config.gcc (powerpc*-*-*): Remove paired.h.  Unsupport the
powerpc*-*-linux*paired* target.
* config/rs6000/750cl.h: Delete.
* config/rs6000/paired.h: Delete.
* config/rs6000/paired.md: Delete.
* config/rs6000/predicates.md (easy_vector_constant): Remove paired
float support.
* config/rs6000/rs6000-builtin.def: Remove paired float support.
* config/rs6000/rs6000-c.c (rs6000_target_modify_macros): Update
comment.  Remove paired float support.
* config/rs6000/rs6000-modes.def: Remove V2SF and V2SI.
* config/rs6000/rs6000-opts.h (enum rs6000_vector): Delete
VECTOR_PAIRED.
* config/rs6000/rs6000-protos.h (paired_expand_vector_init,
paired_emit_vector_cond_expr, paired_expand_vector_move): Delete
declarations.
* config/rs6000/rs6000.c: Remove paired float support.
(paired_expand_vector_init, paired_expand_vector_move,
paired_emit_vector_compare, paired_emit_vector_cond_expr,
(paired_expand_lv_builtin, paired_expand_stv_builtin,
paired_expand_builtin, paired_expand_predicate_builtin,
paired_init_builtins): Delete.
* config/rs6000/rs6000.h: Remove paired float support.
* config/rs6000/rs6000.md: Remove paired float support.
(move_from_CR_ov_bit): Delete.
* config/rs6000/rs6000.opt (mpaired): Delete.
* config/rs6000/t-rs6000: Remove paired.md from MD_INCLUDES.
* doc/invoke.texi (RS/6000 and PowerPC Options): Delete -mpaired.

From-SVN: r259833

ansidecl.h (ATTRIBUTE_NONSTRING): Define.

ATTRIBUTE_NONSTRING

* ansidecl.h (ATTRIBUTE_NONSTRING): Define.

From-SVN: r259832

* gennews (files): Add files for GCC 8.

From-SVN: r259828

re PR middle-end/85567 (internal compiler error: in gimplify_modify_expr, at gimplify.c:5797 when using sincos())

2018-05-02  Richard Biener  <rguenther@suse.de>

PR middle-end/85567
* gimplify.c (gimplify_save_expr): When in SSA form allow
SAVE_EXPRs to compute to SSA vars.

* gcc.dg/torture/pr85567.c: New testcase.

From-SVN: r259826

re PR target/85582 (wrong code at -O1 and above on x86_64-linux-gnu in 32-bit mode)

PR target/85582
* config/i386/i386.md (*ashl<dwi>3_doubleword_mask,
*ashl<dwi>3_doubleword_mask_1, *<shift_insn><dwi>3_doubleword_mask,
*<shift_insn><dwi>3_doubleword_mask_1): If and[sq]i3 is needed, don't
clobber operands[2], instead use a new pseudo.  Formatting fixes.

* gcc.c-torture/execute/pr85582-1.c: New test.
* gcc.c-torture/execute/pr85582-2.c: New test.

From-SVN: r259825

Tighten early exit in vect_analyze_data_ref_dependence (PR85586)

The problem in this PR was that we didn't consider aliases between
writes in the same strided group.  After tightening the early exit
we get the expected abs(step) >= 2 versioning check.

2018-05-02  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tree-optimization/85586
* tree-vect-data-refs.c (vect_analyze_data_ref_dependence): Only
exit early for statements in the same group if the accesses are
not strided.

gcc/testsuite/
PR tree-optimization/85586
* gcc.dg/vect/pr85586.c: New test.

From-SVN: r259822

[lto] Add "could not find mkoffload" error message to lto-wrapper

2018-05-02  Tom de Vries  <tom@codesourcery.com>

PR lto/85451
* lto-wrapper.c (compile_offload_image): Add "could not find mkoffload"
error message.

From-SVN: r259821

Plugin API to get the list of wrap symbols.

This was approved for the binutils gold linker.
2018-05-01  Sriraman Tallam  <tmsriram@google.com>

* plugin-api.h: Add plugin API to get the list of wrap
symbols.

From-SVN: r259820

Add support for gcc as git submodule of another repository.

contrib/
* gcc_update: Check for .git as a file.

From-SVN: r259819

Daily bump.

From-SVN: r259818

PR libstdc++/84654 Disable __float128 specializations for -mno-float128

2018-05-01  Tulio Magno Quites Machado Filho  <tuliom@linux.vnet.ibm.com>

PR libstdc++/84654
* acinclude.m4: Set ENABLE_FLOAT128 instead of _GLIBCXX_USE_FLOAT128.
* config.h.in: Remove references to _GLIBCXX_USE_FLOAT128.
* configure: Regenerate.
* include/Makefile.am: Replace the value of _GLIBCXX_USE_FLOAT128
based on ENABLE_FLOAT128.
* include/Makefile.in: Regenerate.
* include/bits/c++config: Define _GLIBCXX_USE_FLOAT128.
[!defined(__FLOAT128__) && !defined(__SIZEOF_FLOAT128__)]: Undefine
_GLIBCXX_USE_FLOAT128.

From-SVN: r259813

Generalize a<b&a<c -> a<min(b,c)

2018-05-01  Marc Glisse  <marc.glisse@inria.fr>

PR tree-optimization/85143
gcc/
* match.pd (A<B&A<C): Extend to BIT_IOR_EXPR.

gcc/testsuite/
* gcc.dg/tree-ssa/minmax-loopend.c: Extend and split...
* gcc.dg/tree-ssa/minmax-loopend-2.c: ... here.

From-SVN: r259812

* gcc.pot: Regenerate.

From-SVN: r259810

[nvptx] Improve "offload compiler not found" message in mkoffload

2018-05-01  Tom de Vries  <tom@codesourcery.com>

PR lto/85451
* config/nvptx/mkoffload.c (main): Suggest using -B in "offload compiler
not found" error message.

From-SVN: r259809

Add VEC_ORDERED_REMOVE_IF

2018-05-01  Tom de Vries  <tom@codesourcery.com>

PR other/83786
* vec.h (VEC_ORDERED_REMOVE_IF, VEC_ORDERED_REMOVE_IF_FROM_TO): Define.
* vec.c (test_ordered_remove_if): New function.
(vec_c_tests): Call test_ordered_remove_if.
* dwarf2cfi.c (connect_traces): Use VEC_ORDERED_REMOVE_IF_FROM_TO.
* lto-streamer-out.c (prune_offload_funcs): Use VEC_ORDERED_REMOVE_IF.
* tree-vect-patterns.c (vect_pattern_recog_1): Use
VEC_ORDERED_REMOVE_IF.

From-SVN: r259808

-Wformat: fix nonsensical "wide character" message (PR c/84258)

gcc/c-family/ChangeLog:
PR c/84258
* c-format.c (struct format_check_results): Add field
"number_non_char".
(check_format_info): Initialize it, and warn if encountered.
(check_format_arg): Distinguish between wide char and
everything else when detecting arrays of non-char.

gcc/testsuite/ChangeLog:
PR c/84258
* c-c++-common/Wformat-pr84258.c: New test.

From-SVN: r259807

re PR tree-optimization/82665 (missing value range optimization for memchr)

PR tree-optimization/82665
* vr-values.c (vr_values::extract_range_from_binary_expr): Handle
pointer subtraction where arguments come from a memchr call.

        PR tree-optimization/82665
* gcc.dg/tree-ssa/pr82665.c: New test.

From-SVN: r259806

PR c++/85587 - error with scoped enum in template.

* semantics.c (finish_qualified_id_expr): Don't return an
unqualified IDENTIFIER_NODE.

From-SVN: r259805

configure.ac (LD_AS_NEEDED_OPTION, [...]): Use --push-state --as-needed and --pop-state instead of --as-needed and...

* configure.ac (LD_AS_NEEDED_OPTION, LD_NO_AS_NEEDED_OPTION): Use
--push-state --as-needed and --pop-state instead of --as-needed and
--no-as-needed if ld supports it.
* configure: Regenerated.

From-SVN: r259803

Add the Netronome Flow Processor (nfp) as a build target to the top-level configure.ac file.

* configure.ac: Added "nfp" target.
* configure: Regenerate.

From-SVN: r259800

re PR web/85578 (broken links in gcc-8.0.1-RC-20180427/INSTALL/specific.html, and out of date prerequisites.html)

PR web/85578
* doc/install.texi2html: Replace _002d with - and _002a with * in
generated html files using sed.

From-SVN: r259799

re PR go/85429 (Several gotools tests FAIL with Solaris as)

PR go/85429
    cmd/go: support more Solaris assembler syntaxes

    Patch by Rainer Orth.

    Reviewed-on: https://go-review.googlesource.com/110563

From-SVN: r259797

PR c++/85580 - extern "C" and local variables

* name-lookup.c (check_extern_c_conflict): Ignore local decls.

From-SVN: r259793

Daily bump.

From-SVN: r259787

Add gcc_rich_location::add_fixit_insert_formatted

This patch adds a support function to class gcc_rich_location
to make it easier for fix-it hints to use idiomatic C/C++
indentation, for use by the patch for PR c++/85523.

gcc/ChangeLog:
PR c++/85523
* gcc-rich-location.c (blank_line_before_p): New function.
(use_new_line): New function.
(gcc_rich_location::add_fixit_insert_formatted): New function.
* gcc-rich-location.h
(gcc_rich_location::add_fixit_insert_formatted): New function.

gcc/testsuite/ChangeLog:
PR c++/85523
* gcc.dg/plugin/diagnostic-test-show-locus-generate-patch.c
(test_add_fixit_insert_formatted_single_line): New function.
(test_add_fixit_insert_formatted_multiline): New function.
Extend expected output of generated patch to include fix-it hints
for these.
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c: Include
"gcc-rich-location.h".  Add test coverage for
gcc_rich_location::add_fixit_insert_formatted.

From-SVN: r259783

selftest: remove "Yoda ordering" in assertions

gcc/ChangeLog:
* selftest.c (assert_streq): Rename "expected" and "actual" to
"val1" and "val2".  Extend NULL-handling to cover both inputs
symmetrically, while still requiring both to be non-NULL for a pass.
* selftest.h (assert_streq): Rename "expected" and "actual" to
"val1" and "val2".
(ASSERT_EQ): Likewise.
(ASSERT_EQ_AT): Likewise.
(ASSERT_KNOWN_EQ): Likewise.
(ASSERT_KNOWN_EQ_AT): Likewise.
(ASSERT_NE): Likewise.
(ASSERT_MAYBE_NE): Likewise.
(ASSERT_MAYBE_NE_AT): Likewise.
(ASSERT_STREQ): Likewise.  Clarify that both must be non-NULL for
the assertion to pass.
(ASSERT_STREQ_AT): Likewise.

From-SVN: r259782

PR c++/84701 - unsigned typeof.

* decl.c (grokdeclarator): Overhaul diagnostics for invalid use
of long/short/signed/unsigned.

From-SVN: r259780

PR c++/85305 - pack in lambda init-capture.

* parser.c (cp_parser_initializer): Add subexpression_p parm; don't
check_for_bare_parameter_packs in a subexpression.
(cp_parser_lambda_introducer): Use it.

From-SVN: r259779

argv.c (expandargv): Fix memory leak for expanded arguments.

       * argv.c (expandargv): Fix memory leak for expanded
        arguments.

From-SVN: r259775

Clarify documentation for -fpie and -fPIE

* doc/invoke.texi (-fpie, -fPIE): Fix grammar and clarify
interaction with -pie.

From-SVN: r259774

selftest.h: fix alphabetization of per-source-file selftest declarations

gcc/ChangeLog:
* selftest.h: Fix alphabetization of per-source-file selftest
declarations.

From-SVN: r259773

PR c++/61982 - dead stores to destroyed objects.

gcc/cp/
* call.c (build_trivial_dtor_call): New, assigns a clobber.
(build_over_call, build_special_member_call): Use it.
* cp-tree.h: Declare it.
* init.c (build_delete): Remove trivial path.
gcc/
* gimplify.c (gimplify_modify_expr): Simplify complex lvalue on LHS
of clobber.

From-SVN: r259772

init.c (build_dtor_call): Use build_special_member_call.

* init.c (build_dtor_call): Use build_special_member_call.

(build_delete): Remove redundant uses of save_addr.

From-SVN: r259771

tree.c (build_clobber): New.

* tree.c (build_clobber): New.

* tree.h: Declare it.
* gimplify.c (gimplify_bind_expr, gimplify_target_expr): Use it.

From-SVN: r259770

Use char_span for return type of location_get_source_line

location_get_source_line returns a const char * that isn't 0-terminated,
writing back a length through an int * param.

This is error-prone, as all call-sites have to take into account the
lack of 0-termination, and respect the length of the buffer.

It's cleaner to bundle together this pointer+length state into a class,
so this patch does so, reusing the "char_span" class that I introduced
in r250187 (as part of the fix for PR c/81405).

The patch also adds assertions to all access to the char_span.

gcc/c-family/ChangeLog:
* c-format.c (get_corrected_substring): Update for
location_get_source_line returning a char_span.  Use a char_span
when handling the prefix of the correction.
* c-indentation.c (get_visual_column): Update for
location_get_source_line returning a char_span.
(get_first_nws_vis_column): Likewise.

gcc/ChangeLog:
* diagnostic-show-locus.c (layout::layout): Update for
location_get_source_line returning a char_span.
(struct char_span): Move to input.h.
(struct correction): Update for fields in char_span becoming
private.
(struct source_line): Update for location_get_source_line
returning a char_span.
(layout::print_line): Likewise.
* edit-context.c (edited_file::print_content): Likewise.
(edited_file::print_diff_hunk): Likewise.
(edited_file::print_run_of_changed_lines): Likewise.
(edited_file::get_num_lines): Likewise.
(edited_line::edited_line): Likewise.
* final.c (asm_show_source): Likewise.
* input.c (location_get_source_line): Convert return type
from const char * to char_span, losing the final "line_len"
param.
(dump_location_info): Update for the above.
(get_substring_ranges_for_loc): Likewise.  Use a char_span
when handling the literal within the line.
(test_reading_source_line): Update for location_get_source_line
returning a char_span.
* input.h (class char_span): Move here from
diagnostic-show-locus.c, converting from a struct to a class.
Make data members private.
(char_span::operator bool): New.
(char_span::length): New.
(char_span::get_buffer): New.
(char_span::operator[]): New.
(char_span::subspan): Make const.
(char_span::xstrdup): New.
(location_get_source_line): Convert return type from const char *
to char_span, losing the final "line_size" param.

gcc/testsuite/ChangeLog:
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
(test_show_locus): Update for location_get_source_line returning a
char_span.  Use char_span for handling words in the
"test_many_nested_locations" fix-it example.

From-SVN: r259768

lto-wrapper.c (ltrans_priorities): New static var.

* lto-wrapper.c (ltrans_priorities): New static var.
(cmp_priority): New.
(run_gcc): Read priorities and if doing parallel build order
the Makefile by them.

* lto.c (cmp_partitions_size): Remove.
(lto_wpa_write_files): Also output priorities; do not sort partitions.
(cmp_partition_order): Move to ...
* lto-partition.c (cmp_partition_order): ...
(lto_1_to_1_map): Sort partitions.

From-SVN: r259767

input.h: use STATIC_ASSERT

gcc/ChangeLog:
* input.h (builtins_location_check): Convert to a STATIC_ASSERT.

From-SVN: r259766

tree-cfg.c (verify_address): Remove base argument, add flag whether to check TREE_ADDRESSABLE and do that.

2018-04-30  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_address): Remove base argument, add
flag whether to check TREE_ADDRESSABLE and do that.
(verify_expr): Remove.
(verify_types_in_gimple_reference): Add pieces from verify_expr.
(verify_gimple_assign_single): Likewise.
(verify_gimple_switch): Likewise.
(verify_expr_location_1): Dereference tp once.  Add (disabled)
piece from verify_expr.
(verify_gimple_in_cfg): Do not call verify_expr on all ops.

From-SVN: r259765

[ARC] Clear the instruction cache using syscalls.

Clear the instruction cache from `beg' to `end'.  This makes an inline
system call to SYS_cacheflush.

gcc/
2017-03-28  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/linux.h (CLEAR_INSN_CACHE): Define.

From-SVN: r259764

[ARC] Cleanup sdata handling.

Clean up how we handle small data load/store operations.

gcc/
2018-01-18  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc-protos.h (prepare_extend_operands): Remove.
(small_data_pattern): Likewise.
(arc_rewrite_small_data): Likewise.
* config/arc/arc.c (LEGITIMATE_SMALL_DATA_OFFSET_P): Remove.
(LEGITIMATE_SMALL_DATA_ADDRESS_P): Likewise.
(get_symbol_alignment): New function.
(legitimate_small_data_address_p): Likewise.
(legitimate_scaled_address): Update, call
legitimate_small_data_address_p.
(output_sdata): New static variable.
(arc_print_operand): Update how we handle small data operands.
(arc_print_operand_address): Likewise.
(arc_legitimate_address_p): Update, use
legitimate_small_data_address_p.
(arc_rewrite_small_data_p): Remove.
(arc_rewrite_small_data_1): Likewise.
(arc_rewrite_small_data): Likewise.
(small_data_pattern): Likewise.
(compact_sda_memory_operand): Update to use
legitimate_small_data_address_p and get_symbol_alignment.
(prepare_move_operands): Don't rewite sdata pattern.
(prepare_extend_operands): Remove.
* config/arc/arc.md (zero_extendqihi2): Don't rewrite sdata
pattern.
(zero_extendqisi2): Likewise.
(zero_extendhisi2): Likewise.
(extendqihi2): Likewise.
(extendqisi2): Likewise.
(extendhisi2): Likewise.
(addsi3): Likewise.
(subsi3): Likewise.
(andsi3): Likewise.
* config/arc/constraints.md (Usd): Change it to memory constraint.

gcc/testsuite
2018-01-18  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/interrupt-8.c: Update test.
* gcc.target/arc/loop-4.c: Likewise.
* gcc.target/arc/loop-hazard-1.c: Likewise.
* gcc.target/arc/sdata-3.c: Likewise.

From-SVN: r259763

[ARC] Update movhi and movdi patterns.

Allow signed 6-bit short immediates into st[d] instructions.

2017-10-19  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.c (arc_split_move): Allow signed 6-bit constants
as source of std instructions.
* config/arc/arc.md (movsi_insn): Update pattern predicate to
allow 6-bit constants as source for store instructions.
(movdi_insn): Update instruction pattern to allow 6-bit constants
as source for store instructions.

testsuite/
2017-10-19  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/store-merge-1.c: New test.
* gcc.target/arc/add_n-combine.c: Update test.

From-SVN: r259762

* doc/invoke.texi (-fdebug-types-section): Fix grammar.

From-SVN: r259761

[patch] allow '-' for stdout dump

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01303.html
* dumpfile.c (dump_open): Allow '-' for stdout.
* doc/invoke.texi (Developer Options): Document dump filename
determination early.  Document stdin/stdout selection.

Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>
From-SVN: r259760

* lto-partition.c (lto_balanced_map): Fix sanity check.

From-SVN: r259759

Microblaze Target: PIC data text relative
2018-04-30 Andrew Sadek  <andrew.sadek.se@gmail.com>

gcc/ChangeLog:
* config/microblaze/microblaze.opt: add new option -mpic-data-text-rel.
* config/microblaze/microblaze-protos.h (microblaze_constant_address_p):
Add declaration.
* gcc/config/microblaze/microblaze.h (microblaze_constant_address_p):
CONSTANT_ADDRESS_P definition to microblaze_constant_address_p.
* config/microblaze/microblaze.c (TARGET_PIC_DATA_TEXT_REL):
New addressing mode for data-text relative position indepenedent code.
(microblaze_classify_unspec): add 'UNSPEC_TEXT' case ->
'ADDRESS_SYMBOLIC_TXT_REL'.
(microblaze_classify_address): Add handling for UNSPEC + CONST_INT.
(microblaze_legitimate_pic_operand): Exclude function calls from
pic operands in case of TARGET_PIC_DATA_TEXT_REL option.
(microblaze_legitimize_address): Generate 'UNSPEC_TEXT' for all possible
addresses cases.
(microblaze_address_insns): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
(print_operand): Add 'ADDRESS_SYMBOLIC_TXT_REL' case.
(print_operand_address): Add 'ADDRESS_SYMBOLIC_TXT_REL' case + handling
for 'address + offset'.
(microblaze_expand_prologue): Add new function prologue call for
'r20' assignation.
(microblaze_asm_generate_pic_addr_dif_vec): Override new target hook
'TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC' to disable address diff vector
table in case of TARGET_PIC_DATA_TEXT_REL.
(expand_pic_symbol_ref): Add handling for 'UNSPEC_TEXT'.
* gcc/config/microblaze/microblaze.md (TARGET_PIC_DATA_TEXT_REL):
Add new macros 'UNSPEC_TEXT',
'UNSPEC_SET_TEXT' + add rule for setting r20 in function prologue
+ exclude function calls from 'UNSPEC_PLT' in case of data text
relative mode.
* doc/tm.texi.in (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
new target hook for generating address diff vector tables in case of
flag_pic.
* doc/tm.texi : Regenerate.
* stmt.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Append new condition
'targetm.asm_out.generate_pic_addr_diff_vec' to flag_pic in case
of addr diff vector generation.
* target.def (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC): Add
target hook definition.
* targhooks.h, gcc/targhooks.c (TARGET_ASM_GENERATE_PIC_ADDR_DIFF_VEC):
Add default function for generate_pic_addr_diff_vec -> flag_pic.
* doc/invoke.texi (Add new pic option): Add new microblaze pic
option for data text relative.

testsuite/ChangeLog:
* gcc.target/microblaze/others/data_var1.c: Include
PIC case of r20 base register.
* gcc.target/microblaze/others/data_var2.c: Ditto.
* gcc.target/microblaze/others/picdtr.c: Add new
test case for -mpic-is-data-text-relative.
* gcc.target/microblaze/others/sdata_var1.c: Add
* gcc.target/microblaze/others/sdata_var2.c: Ditto.
* gcc.target/microblaze/others/sdata_var3.c: Ditto.
* gcc.target/microblaze/others/sdata_var4.c: Ditto.
* gcc.target/microblaze/others/sdata_var5.c: Ditto.
* gcc.target/microblaze/others/sdata_var6.c: Ditto.
* gcc.target/microblaze/others/string_cst1_gpopt.c: Ditto.
* gcc.target/microblaze/others/string_cst2_gpopt.c: Ditto.

From-SVN: r259758

tree-chrec.h (evolution_function_is_constant_p): Remove redundant check.

2018-04-30  Richard Biener  <rguenther@suse.de>

* tree-chrec.h (evolution_function_is_constant_p): Remove
redundant check.
* tree-cfg.c (tree_node_can_be_shared): Re-order checks.

From-SVN: r259756

re PR bootstrap/85571 (non-bootstrap-debug miscompare with trunk)

2018-04-30  Richard Biener  <rguenther@suse.de>

PR bootstrap/85571
* Makefile.tpl (STAGE3_CFLAGS): Use -fchecking=1.
(STAGE3_TFLAGS): Likewise.
(STAGEtrain_CFLAGS): Filter out -fchecking=1.
(STAGEtrain_TFLAGS): Likewise.
* Makefile.in: Regenerate.

* dwarf2out.c (gen_producer_string): Ignore -fchecking[=].

From-SVN: r259755

re PR tree-optimization/28364 (poor optimization choices when iterating over a std::string (probably not c++-specific))

2018-04-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/28364
PR tree-optimization/85275
* tree-ssa-loop-ch.c (ch_base::copy_headers): Stop after
copying first exit test.

* gcc.dg/tree-ssa/copy-headers-5.c: New testcase.
* gcc.dg/tree-ssa/predcom-8.c: Likewise.
* gcc.dg/tree-ssa/cunroll-13.c: Rewrite to gimple testcase.
* gcc.dg/tree-ssa/ivopt_mult_1.c: XFAIL.
* gcc.dg/tree-ssa/ivopt_mult_1g.c: Add gimple variant that
still passes.
* gcc.dg/tree-ssa/ivopt_mult_2.c: XFAIL.
* gcc.dg/tree-ssa/ivopt_mult_2g.c: Add gimple variant that
still passes.
* gcc.dg/tree-ssa/ssa-dom-thread-7.c: Adjust.
* gcc.dg/tree-ssa/20030710-1.c: Likewise.
* gcc.dg/tree-ssa/20030711-1.c: Likewise.

From-SVN: r259754

Daily bump.

From-SVN: r259753

lto-partition.c: Include sreal.h

* lto-partition.c: Include sreal.h
(add_symbol_to_partition_1): Use size instead of self_size
for size estimate.
(account_reference_p): New.
(lto_balanced_map): Use 64bit arithmetics for size calculatoins; cleanup;
fix accounting errors in boundary size; add debug output; combine cost
as cost/size instead of cost/internal; reduce the partitioning error to
+- 1/8 of the parttion size.

From-SVN: r259749

[openacc, testsuite] Fix undefined behaviour in atomic_capture-1.c

2018-04-29  Julian Brown  <julian@codesourcery.com>
    Tom de Vries  <tom@codesourcery.com>

PR testsuite/85527
* testsuite/libgomp.oacc-c-c++-common/atomic_capture-1.c: Allow
arbitrary order for iterations of atomic subtract check.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>
From-SVN: r259748

Daily bump.

From-SVN: r259747

DWARF: Add .debug_addr table header for dwarf_version >= 5.

GNU DebugFission didn't add table headers for the .debug_addr
tables, but DWARF5 does. The table header makes it possible
for a DWARF consumer to parse the address tables without having
to index all .debug_info CUs first.

We can keep using the .debug_addr section label as is, because the
DW_AT_[GNU_]addr_base attribute points at the actual address index,
which starts right after the table header. So the label is generated
at the correct location whether the header is added first or not.

Add DW_AT_addr_base instead of DW_AT_GNU_addr_base to the skeleton
CU DIE for DWARF5.

gcc/ChangeLog

* dwarf2out.c (dwarf2out_finish): Add .debug_addr table header for
dwarf_version >= 5.
(dwarf_AT): Handle DW_AT_addr_base.
(add_top_level_skeleton_die_attrs): Use dwarf_AT for DW_AT_addr_base.

From-SVN: r259743

re PR target/84431 (Suboptimal code for masked shifts (x86/x86-64))

PR target/84431
* config/i386/i386.md (*ashl<dwi>3_doubleword_mask): New pattern.
(*ashl<dwi>3_doubleword_mask_1): Ditto.
(*<shift_insn><dwi>3_doubleword_mask): Ditto.
(*<shift_insn><dwi>3_doubleword_mask_1): Ditto.

testsuite/ChangeLog:

PR target/84431
* gcc.target/i386/pr84431.c: New test.

From-SVN: r259739

tree-cfg.c (verify_gimple_phi): Take a gphi * argument.

2018-04-28  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_gimple_phi): Take a gphi * argument.
(verify_gimple_in_cfg): Rename visited_stmts to visited_throwing_stmts
to reflect use.  Only add interesting stmts.

From-SVN: r259738

Daily bump.

From-SVN: r259737

[openacc, testsuite] Fix undefined behaviour in atomic_capture-1.f90

2018-04-28  Tom de Vries  <tom@codesourcery.com>

PR testsuite/85527
* testsuite/libgomp.oacc-fortran/atomic_capture-1.f90 (main): Store
atomic capture results obtained in parallel loop to an array, instead of
to a scalar.

From-SVN: r259733

re PR ipa/85549 (Infinite loop in ilmbase package)

PR ipa/85549
* ipa-cp.c (find_aggregate_values_for_callers_subset): Make sure
the jump function allows for passing through aggregate values.

* g++.dg/ipa/pr85549.C: New test.

From-SVN: r259730

re PR c++/85553 (cannot list-initialize a variable of type std::nullptr_t)

PR c++/85553
* init.c (build_zero_init_1): For zero initialization of
NULLPTR_TYPE_P type use build_int_cst directly.

* g++.dg/cpp0x/Wzero-as-null-pointer-constant-3.C: Add dg-bogus
directive.
* g++.dg/cpp0x/constexpr-85553.C: New test.

From-SVN: r259728

input.h: convert some macros to inline functions

gcc/ChangeLog:
* input.h (in_system_header_at): Convert from macro to inline
function.
(from_macro_expansion_at): Likewise.
(from_macro_definition_at): Likewise.

From-SVN: r259727

* config.gcc: Mark tile* targets as deprecated/obsolete.

From-SVN: r259724

re PR libgcc/84292 (__sync_add_and_fetch returns the old value instead of the new value)

2018-04-27  Andreas Tobler  <andreast@gcc.gnu.org>
    Maryse Levavasseur <maryse.levavasseur@stormshield.eu>

PR libgcc/84292
* config/arm/freebsd-atomic.c (SYNC_OP_AND_FETCH_N): Fix the
op_and_fetch to return the right result.

Co-Authored-By: Maryse Levavasseur <maryse.levavasseur@stormshield.eu>
From-SVN: r259722

Don't offer suggestions for compiler-generated variables (PR c++/85515)

gcc/cp/ChangeLog:
PR c++/85515
* name-lookup.c (consider_binding_level): Skip compiler-generated
variables.
* search.c (lookup_field_fuzzy_info::fuzzy_lookup_field): Flatten
nested if statements into a series of rejection tests.  Reject
lambda-ignored entities as suggestions.

gcc/testsuite/ChangeLog:
PR c++/85515
* g++.dg/pr85515-1.C: New test.
* g++.dg/pr85515-2.C: New test.

From-SVN: r259720

re PR go/85429 (Several gotools tests FAIL with Solaris as)

PR go/85429
    cmd/go: add Solaris assembler syntax for gccgo buildid file

    The Solaris assembler uses a different syntax for section directives.

    This is https://golang.org/cl/109140 ported over to gccgo.

    Reviewed-on: https://go-review.googlesource.com/109141

From-SVN: r259719

* g++.dg/cpp1z/noexcept-type20.C: Elaborate.

From-SVN: r259718

cvt.c (cp_fold_convert): Use convert_ptrmem.

* cvt.c (cp_fold_convert): Use convert_ptrmem.

* typeck.c (convert_ptrmem): Add a NOP even if no adjustment.

From-SVN: r259717

re PR c++/84691 (internal compiler error: in poplevel_class, at cp/name-lookup.c:4430)

/cp
2018-04-27  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84691
* decl.c (grokdeclarator): Clear friendp upon definition in local
class definition error.

/testsuite
2018-04-27  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84691
* g++.dg/cpp0x/friend3.C: New.

From-SVN: r259716

PR c++/85545 - ICE with noexcept PMF conversion.

* cvt.c (cp_fold_convert): Pass PMF CONSTRUCTORs to
build_ptrmemfunc.
* typeck.c (build_ptrmemfunc): Don't build a NOP_EXPR for zero
adjustment.
(build_ptrmemfunc_access_expr): Special-case CONSTRUCTORs.

From-SVN: r259712

Fix aarch64 ILP32 ICE with vaarg gimplified code

2018-04-27  Richard Biener  <rguenther@suse.de>

* config/aarch64/aarch64.c: Simplify ap.__stack advance and
fix for ILP32.

From-SVN: r259711

[C++ PATCH] cleanup 2

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01231.html
* typeck.c (convert_ptrmem): Move local var decls to initialization.

From-SVN: r259710

tree-cfg.c (verify_expr): Make dead code hit gcc_unreachable.

2018-04-27  Richard Biener  <rguenther@suse.de>

* tree-cfg.c (verify_expr): Make dead code hit gcc_unreachable.

From-SVN: r259705

[C++ PATCH] some cleanups

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01227.html
* cp-tree.h (TEMPLATE_INFO): Fix comments.
(TI_PENDING_TEMPLATE_FLAG): Check TEMPLATE_INFO.
(NON_DEFAULT_TEMPLATE_ARG_COUNT): Wrap line.
(dump, print_other_binding_stacks): Remove declarations.
* name-lookup.c (print_other_binding_stack): Make static.
* pt.c (build_template_decl): Make static.

From-SVN: r259704

PR85532, crtend.o built without --enable-initfini-array has bad .eh_frame

PR libgcc/85532
* config/rs6000/t-crtstuff (CRTSTUFF_T_CFLAGS): Add
-fno-asynchronous-unwind-tables.

From-SVN: r259702

i386.md (*movti_internal): Substitute Ye constraint with Yd constraint.

* config/i386/i386.md (*movti_internal): Substitute Ye constraint
with Yd constraint. Set "preferred_for_speed" attribute from
TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC for alternatives
with Yd constraint.
(*movdi_internal): Ditto.
(movti_interunit splitters): Remove
TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC from insn condition.
(movdi_interunit splitters): Ditto.
* config/i386/constraints.md (Ye): Remove.
(Yd): Do not depend on TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC.

From-SVN: r259701

[arm] PR target/82518: Return false in ARRAY_MODE_SUPPORTED_P for BYTES_BIG_ENDIAN followup

PR target/82518
* lib/target-supports.exp (check_effective_target_vect_load_lanes):
Use check_effective_target_arm_little_endian.

From-SVN: r259700

[AArch64] PR target/85512: Tighten SIMD right shift immediate constraints pt2

PR target/85512
* config/aarch64/constraints.md (Usg): Limit to 31.
(Usj): Limit to 63.

From-SVN: r259699

re PR ada/85540 (gcc/ada/init.c:1282: suspicious expression ?)

PR ada/85540
* init.c (__gnat_handle_vms_condition): Add missing parentheses.

From-SVN: r259698

re PR tree-optimization/85529 (wrong code at -O2 and -O3 on x86_64-linux-gnu)

PR tree-optimization/85529
* tree-ssa-reassoc.c (optimize_range_tests_var_bound): Add FIRST_BB
argument.  Don't call get_nonzero_bits if opcode is ERROR_MARK_NODE,
rhs2 def stmt's bb is dominated by first_bb and it isn't an obvious
zero extension or masking of the MSB bit.
(optimize_range_tests): Add FIRST_BB argument, pass it through
to optimize_range_tests_var_bound.
(maybe_optimize_range_tests, reassociate_bb): Adjust
optimize_range_tests callers.

* gcc.c-torture/execute/pr85529-1.c: New test.
* gcc.c-torture/execute/pr85529-2.c: New test.
* gcc.dg/pr85529.c: New test.

From-SVN: r259696

Daily bump.

From-SVN: r259695

MIPS/GCC/testsuite: Fix data-sym-pool.c for n64 code

With the soft-float n64 ABI and the data-sym-pool.c test case code like
below is produced:

.file 1 "data-sym-pool.c"
.section .mdebug.abi64
.previous
.nan legacy
.module softfloat
.module oddspreg
.abicalls
.option pic0
.text
.align 2
.globl frob
.set mips16
.set nomicromips
.ent frob
.type frob, @function
frob:
.frame $17,16,$31 # vars= 0, regs= 1/0, args= 0, gp= 0
.mask 0x00020000,-8
.fmask 0x00000000,0
daddiu $sp,-16
sd $17,8($sp)
move $17,$sp
ld $2,.L3
move $sp,$17
ld $17,8($sp)
daddiu $sp,16
jr $31
.type __pool_frob_3, @object
__pool_frob_3:
.align 3
.L3:
.dword 305419896
.type __pend_frob_3, @function
__pend_frob_3:
.insn
.end frob
.size frob, .-frob
.ident "GCC: (GNU) 8.0.1 20180410 (experimental)"

(we have no support for hard-float n64 MIPS16 code generation), which
means that the test case will fail, as the regular expression pattern
expects `lw' and `.word' rather than `ld' and `.dword' respectively to
appear in assembly code generation.  Correct the pattern in an obvious
way then making it accept both intructions and pseudo-ops.

gcc/testsuite/
* gcc.target/mips/data-sym-pool.c (dg-options): Match `ld' and
`.dword' in addition to `lw' and `.word'.

From-SVN: r259691

MIPS/GCC/testsuite: Fix data-sym-pool.c for SVR4 model at -O0

With GCC configurations using the SVR4 rather than the PLT dynamic
executable model and the o32 ABI with the data-sym-pool.c test case code
like below is produced:

.file 1 "data-sym-pool.c"
.section .mdebug.abi32
.previous
.nan legacy
.module fp=xx
.module nooddspreg
.abicalls
.text
.align 2
.globl frob
.set mips16
.set nomicromips
.ent frob
.type frob, @function
frob:
.frame $17,8,$31 # vars= 0, regs= 1/0, args= 0, gp= 0
.mask 0x00020000,-4
.fmask 0x00000000,0
save 8,$17
move $17,$sp
lw $2,$L4
move $sp,$17
restore 8,$17
jr $31
.type __pool_frob_3, @object
__pool_frob_3:
.align 2
$L3:
.word __gnu_local_gp
$L4:
.word 305419896
.type __pend_frob_3, @function
__pend_frob_3:
.insn
.end frob
.size frob, .-frob
.ident "GCC: (GNU) 8.0.1 20180410 (experimental)"

causing a failure due to the unexpected `__gnu_local_gp' entry in the
constant pool, even though there is nothing wrong with it as far as the
annotation being examined is concerned.

Given that the SVR4 vs PLT code model consideration is irrelevant for
this test case rather than rewriting the regular expression to match
this variant of code just enforce the PLT model by using the `-mplt'
option.  It is safe to use this option unconditionally as it is silently
ignored with configurations that do not support this model, e.g. bare
metal ELF.

gcc/testsuite/
* gcc.target/mips/data-sym-pool.c (dg-options): Add `-mplt'.

From-SVN: r259690

PR c++/85545 - ICE with noexcept PMF conversion.

* cvt.c (cp_fold_convert): Handle PMF CONSTRUCTORs directly.

From-SVN: r259689

cgraph.h (symbol_table): Just declare debug method here.

* cgraph.h (symbol_table): Just declare debug method here.
* symtab.c (symbol_table::debug): Define.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r259685

* loop-invariant.c (may_assign_reg_p): Return false for frame pointer.

From-SVN: r259683

i386.md ("isa" attribute): Add x64_sse2.

* config/i386/i386.md ("isa" attribute): Add x64_sse2.
("enabled" attribute): Handle "isa" attribute.
(*movdi_internal): Substitute Yi and Yj constraint with x
and Ym and Yn constraint with y constraint.  Update "isa"
attribute and set "preferred_for_speed" attribute from
TARGET_INTER_UNIT_MOVES_{FROM,TO}_VEC for updated alternatives.
(*movsi_internal): Ditto.
(*movdf_internal): Ditto.
(*movsf_internal): Ditto.
(*zero_extendsidi2): Ditto.
* config/i386/sse.md (vec_set<mode>_0): Ditto.
(sse2_loadld): Ditto.
(*vec_extract<ssevecmodelower>_0): Ditto.
(*vec_extractv4si_0_zext_sse4): Ditto.
(vec_concatv2di): Ditto.
(*vec_dup<mode>): Ditto.
* config/i386/mmx.md (*mov<mode>_internal): Ditto.
* config/i386/constraints.md (Yi): Remove.
(Yj): Remove.
(Ym): Remove.
(Yn): Remove.

From-SVN: r259682

dumpfile cleanup

https://gcc.gnu.org/ml/gcc-patches/2018-04/msg01173.html
* dumpfile.c (dump_open): New.
(dump_open_alternate_stream, dump_start, dump_begin): Call it.
(dump_finish): Detect stdio/stderr by value not name.

From-SVN: r259681

Document that -Wreturn-type is enabled by default for C++

* doc/invoke.texi (-Wreturn-type): Document default status for C++.

From-SVN: r259679

[nvptx, libgomp] Add GOMP_NVPTX_JIT=-O[0-4] in nvptx libgomp plugin

2018-04-26  Tom de Vries  <tom@codesourcery.com>

PR libgomp/84020
* plugin/cuda/cuda.h (CUjit_option): Add CU_JIT_OPTIMIZATION_LEVEL.
* plugin/plugin-nvptx.c (_GNU_SOURCE): Define.
(process_GOMP_NVPTX_JIT): New function.
(link_ptx): Use process_GOMP_NVPTX_JIT.

From-SVN: r259678

[nvptx] Verify bar.sync position

2018-04-26  Tom de Vries  <tom@codesourcery.com>

PR target/84952
* config/nvptx/nvptx.c (verify_neutering_jumps)
(verify_neutering_labels): New function
(nvptx_single): Use verify_neutering_jumps and verify_neutering_labels.

From-SVN: r259677

[nvptx] Fix branch-around-nothing

2018-04-26  Tom de Vries  <tom@codesourcery.com>

PR target/84025
* config/nvptx/nvptx.c (needs_neutering_p): New function.
(nvptx_single): Use needs_neutering_p to skip over insns that do not
need neutering.

From-SVN: r259676

[lto] Fixup loops before lto write-out

2018-04-26  Richard Biener <rguenther@suse.de>
    Tom de Vries  <tom@codesourcery.com>

PR lto/85422
* lto-streamer-out.c (output_function): Fixup loops if required to match
discovery done in the reader.

* testsuite/libgomp.oacc-c-c++-common/pr85422.c: New test.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>
From-SVN: r259675

[nvptx, libgomp, testsuite] Reduce recursion depth in declare_target-{1,2}.f90

2018-04-26  Tom de Vries  <tom@codesourcery.com>

PR target/85519
* testsuite/libgomp.fortran/examples-4/declare_target-1.f90: Reduce
recursion depth from 25 to 23.
* testsuite/libgomp.fortran/examples-4/declare_target-2.f90: Same.

From-SVN: r259674

re PR libstdc++/85116 (std::min_element does not optimize well with inlined predicate)

2018-04-26  Richard Biener  <rguenther@suse.de>

PR tree-optimization/85116
* tree-ssa-loop-ch.c (do_while_loop_p): A do-while loop should
have a loop exit from the single latch predecessor.  Remove
case of header with just condition.
(ch_base::copy_headers): Exclude infinite loops from any
processing.
(pass_ch::execute): Record exits.

* gcc.dg/tree-ssa/copy-headers-2.c: New testcase.
* gcc.dg/tree-ssa/copy-headers-3.c: Likewise.
* gcc.dg/tree-ssa/copy-headers-4.c: Likewise.
* gcc.dg/tree-ssa/loadpre6.c: Adjust.

From-SVN: r259672

Makefile.tpl (STAGE1_TFLAGS): Add -fno-checking.

2018-04-26  Richard Biener  <rguenther@suse.de>

* Makefile.tpl (STAGE1_TFLAGS): Add -fno-checking.
(STAGE2_CFLAGS): Likewise.
(STAGE2_TFLAGS): Likewise.
(STAGE3_CFLAGS): Add -fchecking.
(STAGE3_TFLAGS): Likewise.
(STAGEtrain_CFLAGS): Filter out -fchecking.
(STAGEtrain_TFLAGS): Likewise.
* Makefile.in: Re-generate.

From-SVN: r259669

tree-vect-data-refs.c (vect_get_data_access_cost): Get prologue cost vector and pass it to vect_get_load_cost.

2018-04-26  Richard Biener  <rguenther@suse.de>

* tree-vect-data-refs.c (vect_get_data_access_cost): Get
prologue cost vector and pass it to vect_get_load_cost.
(vect_get_peeling_costs_all_drs): Likewise.
(vect_peeling_hash_get_lowest_cost): Likewise.
(vect_enhance_data_refs_alignment): Likewise.

From-SVN: r259668