re PR tree-optimization/77450 (ICE: in verify_ssa, at tree-ssa.c:1016 on very simple code with vectors)

2016-09-06  Richard Biener  <rguenther@suse.de>

PR c/77450
c-family/
* c-common.c (c_common_mark_addressable_vec): Handle
COMPOUND_LITERAL_EXPR.

* c-c++-common/vector-subscript-7.c: Adjust.
* c-c++-common/vector-subscript-8.c: New testcase.

From-SVN: r240006

Skip Wno-frame-address test for avr

The avr backend supports __builtin_return_address only for the current
stack frame. The test expects it to work for caller frames as well and
therefore fails for avr.

Add avr to the list of targets already excluded with dg-skip-if.

gcc/testsuite/ChangeLog:

2016-09-06  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

* gcc.dg/Wno-frame-address.c: Skip for avr-*-*.

From-SVN: r240005

Daily bump.

From-SVN: r240004

variant: include bits/move.h for std::addressof.

2016-09-05  Tim Shen  <timshen@google.com>

* include/std/variant: include bits/move.h for std::addressof.

From-SVN: r240001

re PR target/77476 ([AVX-512] illegal kmovb instruction on KNL)

PR target/77476
* config/i386/i386.md (isa): Add x64_avx512bw.
(*zero_extendsidi2): For alternative 11 use x64_avx512bw isa.
(kmov_isa): New mode attr.
(zero_extend<mode>di2): Use <kmov_isa> isa for the last alternative.
(*zero_extend<mode>si2): Likewise.
(*zero_extendqihi2): Use avx512dq isa for the last alternative.

* gcc.target/i386/avx512f-pr77476.c: New test.
* gcc.target/i386/avx512bw-pr77476.c: New test.
* gcc.target/i386/avx512dq-pr77476.c: New test.

From-SVN: r240000

target-supports.exp (check_effective_target_vect_simd_clones): Update comment to mention also avx512f.

* lib/target-supports.exp (check_effective_target_vect_simd_clones):
Update comment to mention also avx512f.

From-SVN: r239999

re PR sanitizer/77396 (address  sanitizer crashes if all static global variables are optimized)

PR sanitizer/77396
* asan/asan_globals.cc: Cherry-pick upstream r280657.

* g++.dg/asan/pr77396-2.C: New test.

From-SVN: r239998

ChangeLog formatting fixes.

From-SVN: r239997

variant (_Variant_storage::_M_storage()): Use std::addressof instead of operator& to take address.

2016-09-05  Mikhail Strelnikov  <mikhail.strelnikov@gmail.com>

* include/std/variant (_Variant_storage::_M_storage()): Use std::addressof
instead of operator& to take address.

From-SVN: r239996

invoke.texi (SPU Options): nops -> NOPs.

* doc/invoke.texi (SPU Options): nops -> NOPs.
(x86 Options): Ditto.

From-SVN: r239995

re PR middle-end/77475 (unnecessary or misleading context in reporting command line problems)

PR middle-end/77475
* toplev.c (process_options): Temporarily set input_location
to UNKNOWN_LOCATION around targetm.target_option.override () call.

From-SVN: r239994

* sv.po: Update.

From-SVN: r239992

re PR target/77452 (ICE: in plus_constant, at explow.c:87 with -fno-split-wide-types -mavx512f --param=max-combine-insns=2)

PR rtl-optimization/77452
* explow.c (plus_constant) <case MEM>: Extract scalar constant from
inner-mode reference to a CONST_VECTOR constant in the constant pool.

testsuite/ChangeLog:

PR rtl-optimization/77452
* gcc.target/i386/pr77452.c: New test.

From-SVN: r239989

re PR c/77423 (-Wlogical-not-parentheses false positive for bitwise expression with _Bool operands)

PR c/77423
* doc/invoke.texi: Update -Wlogical-not-parentheses documentation.

* c-common.c (bool_promoted_to_int_p): New function.
(expr_has_boolean_operands_p): New function.
(warn_logical_not_parentheses): Return if expr_has_boolean_operands_p.
(maybe_warn_bool_compare): Use bool_promoted_to_int_p.

* c-c++-common/Wlogical-not-parentheses-3.c: New test.

From-SVN: r239988

re PR other/77421 (Bugs found in GCC with the help of PVS-Studio)

PR other/77421
* gensupport.c (alter_output_for_subst_insn): Remove redundant
*insn_out == '*' test.  Don't copy unnecessary to yet another
memory buffer, and don't leak it.

From-SVN: r239987

re PR rtl-optimization/77425 (Pointer test follows dereference in sched-int.h)

PR rtl-optimization/77425
* ipa-devirt.c (get_odr_type): Set val->id unconditionally.

From-SVN: r239986

Daily bump.

From-SVN: r239985

re PR fortran/77391 (gfortran allows CHARACTER(LEN=:),PARAMETER:: STRING='constant'   buts does not report it as an extension)

2016-09-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/77391
* resolve.c (deferred_requirements): New function to check F2008:C402.
(resolve_fl_variable,resolve_fl_parameter): Use it.

2016-09-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/77391
* gfortran.dg/pr77391.f90: New test.

From-SVN: r239982

re PR web/50642 (onlinedocs formated text too small to read)

PR documentation/50642
* update_web_docs_svn (CSS): Introduce.
Have generated files refer to it.

From-SVN: r239981

update_web_docs_svn (CSS): Introduce.

* update_web_docs_svn (CSS): Introduce.
Have generated files refer to it.

From-SVN: r239980

re PR fortran/77460 (ICE when summing an overflowing array)

2016-09-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/77460
* simplify.c (simplify_transformation_to_scalar):  On error, result
may be NULL, simply return.

2016-09-04  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/77460
* gfortran.dg/pr77460.f90: New test.

From-SVN: r239979

ffi.c (ffi_struct_type): Put type declaration on separate line.

* src/pa/ffi.c (ffi_struct_type): Put type declaration on separate line.
(ffi_prep_args_pa32): Likewise.
(ffi_size_stack_pa32): Likewise.
(ffi_prep_cif_machdep): Likewise.
(ffi_call): Likewise.  Rename to ffi_call_int.  Add closure argument
and update call to ffi_call_pa32.
(ffi_call, ffi_call_go, ffi_prep_go_closure): New.
(ffi_closure_inner_pa32): Update to handle go closures.
* src/pa/ffitarget.h (FFI_GO_CLOSURES): Define.
* src/pa/hpux32.S (ffi_call_pa32): Pass go closure argument in static
chain register (%ret1).
(ffi_closure_pa32): Set closure type argument to zero.
(ffi_go_closure_pa32): New function.  Add unwind data for it.
* src/pa/linux.S: Likewise.  Use cfi directives for unwind data.
* testsuite/libffi.go/static-chain.h (STATIC_CHAIN_REG): Define for
hppa.

From-SVN: r239978

re PR fortran/71902 (Unneeded temporary on reallocatable character assignment)

2016-09-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/71902
* frontend-passes.c (realloc_string_callback): Also check for the
lhs being deferred.  Name temporary variable "realloc_string".

2016-09-04  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/71902
* gfortran.dg/dependency_47.f90:  New test.
* gfortran.dg/dependency_49.f90:  New test.

From-SVN: r239977

inclhack.def (hpux_longjmp): Adjust select regular expression.

* inclhack.def (hpux_longjmp): Adjust select regular expression.
* fixincl.x: Regenerate.

From-SVN: r239976

Revert "Replace error_at with assert in build_va_arg"

2016-09-04  Tom de Vries  <tom@codesourcery.com>

revert:
2016-08-29  Tom de Vries  <tom@codesourcery.com>

* c-common.c (build_va_arg): Replace first argument type error
with assert.

From-SVN: r239975

Daily bump.

From-SVN: r239974

ubsan.c (ubsan_use_new_style_p): Fix check for empty string.

gcc/
* ubsan.c (ubsan_use_new_style_p): Fix check for empty string.

From-SVN: r239971

re PR c/65467 ([libgomp] sorry, unimplemented: '_Atomic' with OpenMP)

PR c/65467
* gcc.dg/gomp/_Atomic-4.c: Require vect_simd_clones effective target.

From-SVN: r239970

Daily bump.

From-SVN: r239969

avx512f-klogic-2.c: Fix operand calculation order.

gcc/testsuite/
  * gcc.target/i386/avx512f-klogic-2.c: Fix operand calculation order.

From-SVN: r239966

Add -fdiagnostics-generate-patch

gcc/ChangeLog:
* common.opt (fdiagnostics-generate-patch): New option.
* diagnostic.c: Include "edit-context.h".
(diagnostic_initialize): Initialize context->edit_context_ptr.
(diagnostic_finish): Delete context->edit_context_ptr.
(diagnostic_report_diagnostic): Add fix-it hints from the
diagnostic to context->edit_context_ptr, if any.
* diagnostic.h (class edit_context): Add forward decl.
(struct diagnostic_context): Add field "edit_context_ptr".
* doc/invoke.texi (Diagnostic Message Formatting Options): Add
-fdiagnostics-generate-patch.
(-fdiagnostics-generate-patch): New item.
* toplev.c: Include "edit-context.h".
(process_options): Set global_dc->edit_context_ptr to a new
edit_context if the options need one.
(toplev::main): Handle -fdiagnostics-generate-patch by using
global_dc->edit_context_ptr.

gcc/testsuite/ChangeLog:
* gcc.dg/plugin/diagnostic-test-show-locus-generate-patch.c: New
test case.
* gcc.dg/plugin/plugin.exp (plugin_test_list): Add
diagnostic-test-show-locus-generate-patch.c to the sources
for diagnostic_plugin_test_show_locus.c.

From-SVN: r239965

re PR c/65467 ([libgomp] sorry, unimplemented: '_Atomic' with OpenMP)

PR c/65467
* gimplify.c (gimplify_adjust_omp_clauses_1): Diagnose implicit
map and firstprivate clauses on target construct for _Atomic
qualified decls.
(gimplify_adjust_omp_clauses): Diagnose explicit firstprivate clauses
on target construct for _Atomic qualified decls.
* omp-low.c (use_pointer_for_field): Return true for _Atomic qualified
decls.
* omp-simd-clone.c (simd_clone_clauses_extract): Warn and give up for
_Atomic qualified arguments not mentioned in uniform clause.
c/
* c-parser.c (c_parser_declspecs): Don't sorry about _Atomic if
flag_openmp.
(c_parser_omp_variable_list): Use convert_lvalue_to_rvalue
instead of mark_exp_read on low_bound/length expression.
(c_parser_omp_clause_num_gangs, c_parser_omp_clause_num_threads,
c_parser_omp_clause_num_tasks, c_parser_omp_clause_grainsize,
c_parser_omp_clause_priority, c_parser_omp_clause_hint,
c_parser_omp_clause_num_workers, c_parser_oacc_shape_clause,
c_parser_oacc_clause_tile, c_parser_omp_clause_schedule,
c_parser_omp_clause_vector_length, c_parser_omp_clause_num_teams,
c_parser_omp_clause_thread_limit, c_parser_omp_clause_aligned,
c_parser_omp_clause_linear, c_parser_omp_clause_safelen,
c_parser_omp_clause_simdlen, c_parser_omp_clause_device,
c_parser_omp_clause_dist_schedule): Use convert_lvalue_to_rvalue
instead of mark_expr_read.
(c_parser_omp_declare_reduction): Reject _Atomic qualified types.
* c-objc-common.h (LANG_HOOKS_OMP_CLAUSE_COPY_CTOR,
LANG_HOOKS_OMP_CLAUSE_ASSIGN_OP): Redefine.
* c-tree.h (c_omp_clause_copy_ctor): New prototype.
* c-typeck.c (handle_omp_array_sections_1): Diagnose _Atomic qualified
array section bases outside of depend clause, for depend clause
use convert_lvalue_to_rvalue on the base.
(c_finish_omp_clauses): Reject _Atomic qualified vars in reduction,
linear, aligned, map, to and from clauses.
(c_omp_clause_copy_ctor): New function.
c-family/
* c-omp.c (c_finish_omp_atomic): Reject _Atomic qualified expressions.
(c_finish_omp_for): Reject _Atomic qualified iterators.
testsuite/
* gcc.dg/gomp/_Atomic-1.c: New test.
* gcc.dg/gomp/_Atomic-2.c: New test.
* gcc.dg/gomp/_Atomic-3.c: New test.
* gcc.dg/gomp/_Atomic-4.c: New test.
* gcc.dg/gomp/_Atomic-5.c: New test.

From-SVN: r239964

Introduce class edit_context

gcc/ChangeLog:
* Makefile.in (OBJS-libcommon): Add edit-context.o.
* diagnostic-color.c (color_dict): Add "diff-filename",
"diff-hunk", "diff-delete", and "diff-insert".
(parse_gcc_colors): Update default value of GCC_COLORS in comment
to reflect above changes.
* doc/invoke.texi (-fdiagnostics-color): Update description of
default GCC_COLORS, and of the supported capabilities.
* edit-context.c: New file.
* edit-context.h: New file.
* input.c (struct fcache): Add field "missing_trailing_newline".
(diagnostics_file_cache_forcibly_evict_file): Initialize it to
true.
(add_file_to_cache_tab): Likewise.
(fcache::fcache): Likewise.
(get_next_line): Update c->missing_trailing_newline.
(location_missing_trailing_newline): New function.
* input.h (location_missing_trailing_newline): New decl.
* selftest-run-tests.c (selftest::run_tests): Call
edit_context_c_tests.
* selftest.h (edit_context_c_tests): New decl.

libcpp/ChangeLog:
* include/line-map.h (rich_location::seen_impossible_fixit_p): New
accessor.

From-SVN: r239963

re PR tree-optimization/77444 (Bogus assignments in cand_value_at)

PR tree-optimization/77444
* tree-ssa-loop-ivopts.c (cand_value_at): For pointers use sizetype
as steptype, remove redundant initialization.

Co-Authored-By: Richard Biener <rguenther@suse.de>
From-SVN: r239962

re PR sanitizer/77396 (address  sanitizer crashes if all static global variables are optimized)

PR sanitizer/77396
* sanopt.c: Include gimple-ssa.h, tree-phinodes.h and ssa-iterators.h.
(sanopt_optimize_walker): Optimize away
__asan_before_dynamic_init (...) followed by
__asan_after_dynamic_init () without intervening memory loads/stores.
* ipa-pure-const.c (special_builtin_state): Handle
BUILT_IN_ASAN_BEFORE_DYNAMIC_INIT and
BUILT_IN_ASAN_AFTER_DYNAMIC_INIT.

* decl2.c (do_static_initialization_or_destruction): Only
call asan_dynamic_init_call if INITP is true.

* g++.dg/asan/pr77396.C: New test.

From-SVN: r239961

cfg.c (free_original_copy_tables): Replace second assignment of bb_copy = NULL by bb_original = NULL.

2016-09-02  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

* cfg.c (free_original_copy_tables): Replace second assignment of
bb_copy = NULL by bb_original = NULL.

From-SVN: r239960

re PR other/77421 (Bugs found in GCC with the help of PVS-Studio)

PR other/77421
* config/i386/i386.c (ix86_expanded_args_builtin): Remove redundant
assignment added in r216794.

From-SVN: r239959

Improvements to typed_splay_tree

This patch adds foreach, max and min methods to
class typed_splay_tree, along with the start of a selftest
suite.

gcc/ChangeLog:
* Makefile.in (OBJS): Add typed-splay-tree.o.
* selftest-run-tests.c (selftest::run_tests): Call
typed_splay_tree_c_tests.
* selftest.h (typed_splay_tree_c_tests): New decl.
* typed-splay-tree.c: New file.
* typed-splay-tree.h (typed_splay_tree::foreach_fn): New typedef.
(typed_splay_tree::max): New method.
(typed_splay_tree::min): New method.
(typed_splay_tree::foreach): New method.
(typed_splay_tree::closure): New struct.
(typed_splay_tree::inner_foreach_fn): New function.

From-SVN: r239958

Use setrlimit for testing libstdc++ in cross toolchains

* acinclude.m4 (GLIBCXX_CONFIGURE_TESTSUITE): Check for presence of
setrlimit on both native and cross targets.
* configure: Regenerate.

From-SVN: r239955

ipa-cp.c (ipcp_store_bits_results): Change option name from -fipa-cp-bit to -fipa-bit-cp.

2016-09-02  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

* ipa-cp.c (ipcp_store_bits_results): Change option name from
-fipa-cp-bit to -fipa-bit-cp.

From-SVN: r239954

PR tree-optimization/71831 - __builtin_object_size poor results with no

PR tree-optimization/71831 - __builtin_object_size poor results with no
optimization

gcc/testsuite/ChangeLog:

PR tree-optimization/71831
* gcc.dg/builtin-object-size-16.c: New test.
* gcc.dg/builtin-object-size-17.c: New test.

gcc/ChangeLog:

PR tree-optimization/71831
* tree-object-size.h: Return bool instead of the size and add
argument for the size.
* tree-object-size.c (compute_object_offset): Update signature.
(addr_object_size): Same.
(compute_builtin_object_size): Return bool instead of the size
and add argument for the size.  Handle POINTER_PLUS_EXPR when
optimization is disabled.
(expr_object_size): Adjust.
(plus_stmt_object_size): Adjust.
(pass_object_sizes::execute): Adjust.
* builtins.c (fold_builtin_object_size): Adjust.
* doc/extend.texi (Object Size Checking): Update.
* ubsan.c (instrument_object_size): Adjust.

From-SVN: r239953

Daily bump.

From-SVN: r239952

c-ada-spec.c (dump_ada_function_declaration): Increase buffer size to guarantee it fits the output of the formatted function...

gcc/c-family/ChangeLog:

* c-ada-spec.c (dump_ada_function_declaration): Increase buffer
size to guarantee it fits the output of the formatted function
regardless of its arguments.

gcc/cp/ChangeLog:

* mangle.c: Increase buffer size to guarantee it fits the output
of the formatted function regardless of its arguments.

gcc/go/ChangeLog:

* gofrontend/expressions.cc: Increase buffer size to guarantee
it fits the output of the formatted function regardless of its
arguments.

gcc/java/ChangeLog:

* decl.c (give_name_to_locals): Increase buffer size to guarantee
it fits the output of the formatted function regardless of its
arguments.
* mangle_name.c (append_unicode_mangled_name): Same.

gcc/ChangeLog:

* genmatch.c (parser::parse_expr): Increase buffer size to guarantee
it fits the output of the formatted function regardless of its
arguments.
* gcc/genmodes.c (parser::parse_expr): Same.
* gimplify.c (gimplify_asm_expr): Same.
* passes.c (pass_manager::register_one_dump_file): Same.
* print-tree.c (print_node): Same.

From-SVN: r239949

rs6000: Rename 110 -> VSCR_REGNO

* config/rs6000/altivec.md: Use VSCR_REGNO instead of 110 throughout.

From-SVN: r239948

rs6000: Rename 109 -> VRSAVE_REGNO

* config/rs6000/altivec.md: Use VRSAVE_REGNO instead of 109 throughout.

From-SVN: r239947

rs6000: Rename 74 -> CR6_REGNO

* config/rs6000/altivec.md: Use CR6_REGNO instead of 74 throughout.
* config/rs6000/vector.md: Ditto.
* config/rs6000/vsx.md: Ditto.

From-SVN: r239946

re PR libfortran/77393 (Revision r237735 changed the behavior of F0.0)

2016-09-01  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libgfortran/77393
* gfortran.dg/fmt_f0_2.f90: Update tests for available kinds.

From-SVN: r239945

float128-builtin.c, [...]: Use dg-add-options ieee.

* gcc.dg/torture/float128-builtin.c, gcc.dg/torture/float128-floath.c,
gcc.dg/torture/float128-ieee-nan.c, gcc.dg/torture/float128-tg-2.c,
gcc.dg/torture/float128-tg.c, gcc.dg/torture/float128x-builtin.c,
gcc.dg/torture/float128x-floath.c, gcc.dg/torture/float128x-nan.c,
gcc.dg/torture/float128x-tg-2.c, gcc.dg/torture/float128x-tg.c,
gcc.dg/torture/float16-builtin.c, gcc.dg/torture/float16-floath.c,
gcc.dg/torture/float16-nan.c, gcc.dg/torture/float16-tg-2.c,
gcc.dg/torture/float16-tg.c, gcc.dg/torture/float32-builtin.c,
gcc.dg/torture/float32-floath.c, gcc.dg/torture/float32-nan.c,
gcc.dg/torture/float32-tg-2.c, gcc.dg/torture/float32-tg.c,
gcc.dg/torture/float32x-builtin.c, gcc.dg/torture/float32x-floath.c,
gcc.dg/torture/float32x-nan.c, gcc.dg/torture/float32x-tg-2.c,
gcc.dg/torture/float32x-tg.c, gcc.dg/torture/float64-builtin.c,
gcc.dg/torture/float64-floath.c, gcc.dg/torture/float64-nan.c,
gcc.dg/torture/float64-tg-2.c, gcc.dg/torture/float64-tg.c,
gcc.dg/torture/float64x-builtin.c, gcc.dg/torture/float64x-floath.c,
gcc.dg/torture/float64x-nan.c, gcc.dg/torture/float64x-tg-2.c,
gcc.dg/torture/float64x-tg.c: Use dg-add-options ieee.

From-SVN: r239944

ipa-inline-analysis.c (param_change_prob): Get to the base object first in all cases.

* ipa-inline-analysis.c (param_change_prob): Get to the base object
first in all cases.

From-SVN: r239943

rs6000: Use LR_REGNO directly in the save/restore patterns

Various patterns use "register_operand" "l" (or "=l") although those
patterns are only created refering to LR_REGNO directly.  This patch
changes those patterns to use the hard regs as well.

* config/rs6000/rs6000.md (*restore_gpregs_<mode>_r11,
*restore_gpregs_<mode>_r12, *restore_gpregs_<mode>_r1,
*return_and_restore_gpregs_<mode>_r11,
*return_and_restore_gpregs_<mode>_r12,
*return_and_restore_gpregs_<mode>_r1,
*return_and_restore_fpregs_<mode>_r11,
*return_and_restore_fpregs_<mode>_r12,
*return_and_restore_fpregs_<mode>_r1): Use the hard register LR_REGNO
directly instead of via the "l" constraint.  Renumber operands.
Fix whitespace.

From-SVN: r239942

rs6000: Use LR_REGNO instead of constant 65

Many places still use 65 instead of the symbolic constant LR_REGNO.  This
fixes them all (I looked for the string "65" only, in config/rs6000/ only,
I didn't read all code :-) )

I left it in *restore_world because Iain will remove it there soon.

* config/rs6000/altivec.md (*save_world, *save_vregs_<mode>_r11,
save_vregs_<mode>_r12, *restore_vregs_<mode>_r11,
*restore_vregs_<mode>_r12): Use LR_REGNO instead of 65.
* config/rs6000/darwin.md (load_macho_picbase, load_macho_picbase_si,
load_macho_picbase_di, *call_indirect_nonlocal_darwin64,
*call_nonlocal_darwin64, *call_value_indirect_nonlocal_darwin64,
*call_value_nonlocal_darwin64, reload_macho_picbase,
reload_macho_picbase_si, reload_macho_picbase_di): Ditto.
* config/rs6000/rs6000.h (RETURN_ADDR_IN_PREVIOUS_FRAME): Ditto.
* config/rs6000/rs6000.md (*save_gpregs_<mode>_r11,
*save_gpregs_<mode>_r12, *save_gpregs_<mode>_r1,
*save_fpregs_<mode>_r11, *save_fpregs_<mode>_r12,
*save_fpregs_<mode>_r1): Ditto.
* config/rs6000/spe.md (*save_gpregs_spe, *restore_gpregs_spe,
*return_and_restore_gpregs_spe): Ditto.

From-SVN: r239941

rs6000: Fix for AIX, for r239866

This should fix r239866 for AIX.  I missed two patterns that refer to LR
as "register_operand" "l" instead of as reg:P LR_REGNO.

* config/rs6000/rs6000.md
(define_insn "*return_and_restore_fpregs_aix_<mode>_r11"): Delete
the use of the link register.
(define_insn "*return_and_restore_fpregs_aix_<mode>_r1"): Ditto.

From-SVN: r239940

re PR c/7652 (-Wswitch-break : Warn if a switch case falls through)

PR c/7652
gcc/c-family/
* c-common.c (resolve_overloaded_builtin): Fix formatting.  Add
FALLTHRU comments.
gcc/c/
* c-typeck.c (composite_type): Add FALLTHRU comment.
gcc/gcc/cp/
* error.c (dump_type): Fix falls through comment.
(dump_decl): Likewise.
(dump_expr): Likewise.

From-SVN: r239939

re PR target/72827 (gnat bootstrap broken on powerpc64le-linux-gnu)

2016-09-01  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>
    Michael Meissner <meissner@linux.vnet.ibm.com>

PR target/72827
* config/rs6000/rs6000.c (rs6000_legitimize_address): Avoid
reg+reg addressing for TImode.
(rs6000_legitimate_address_p): Only allow register indirect
addressing for TImode, even without TARGET_QUAD_MEMORY.

Co-Authored-By: Michael Meissner <meissner@linux.vnet.ibm.com>
From-SVN: r239938

re PR middle-end/77436 (Incorrect constant result for summing loop inserted)

2016-09-01  Richard Biener  <rguenther@suse.de>

PR middle-end/77436
* tree-chrec.c (tree_fold_binomial): Use widest_int, properly
check whether the result fits the desired result type.

* gcc.dg/torture/pr77436.c: New testcase.

From-SVN: r239937

* config/nvptx/nvptx.md (cbranch<mode>4): Op 2 can be const.

From-SVN: r239934

This patch adds legitimize_address_displacement hook so that stack accesses...

This patch adds legitimize_address_displacement hook so that stack accesses
with large offsets are split into a more efficient sequence.  Unaligned and
TI/TFmode use a 256-byte range, byte and halfword accesses use a 4KB range,
wider accesses use a 16KB range to maximise the available addressing range
and increase opportunities to share the base address.

int f(int x)
{
  int arr[8192];
  arr[4096] = 0;
  arr[6000] = 0;
  arr[7000] = 0;
  arr[8191] = 0;
  return arr[x];
}

Now generates:

  sub   sp, sp, #32768
  add   x1, sp, 16384
  str   wzr, [x1]
  str   wzr, [x1, 7616]
  str   wzr, [x1, 11616]
  str   wzr, [x1, 16380]
  ldr   w0, [sp, w0, sxtw 2]
  add   sp, sp, 32768
  ret

    gcc/
* config/aarch64/aarch64.c (aarch64_legitimize_address_displacement):
New function.
(TARGET_LEGITIMIZE_ADDRESS_DISPLACEMENT): Define.

From-SVN: r239923

Fix more bogus testsuite failures for avr.

gcc/testsuite/

2016-09-01  Senthil Kumar Selvaraj  <senthil_kumar.selvaraj@atmel.com>

        * gcc.dg/pr64252.c: Require int32plus.
        * gcc.dg/pr66299-1.c: Likewise.
        * gcc.dg/pr66299-2.c: Likewise.
        * gcc.dg/torture/20131115-1.c: Skip for avr.

From-SVN: r239921

[AArch64] Add ANDS pattern for CMP+ZERO_EXTEND

* config/aarch64/aarch64.md (*ands<mode>_compare0): New pattern.
* config/aarch64/aarch64.c (aarch64_select_cc_mode): Return CC_NZmode
for comparisons of integer ZERO_EXTEND against zero.

* gcc.target/aarch64/ands_3.c: New test.

From-SVN: r239919

i386.c (ix86_option_override_internal): Also disable the STV pass if -mstackrealign is enabled.

* config/i386/i386.c (ix86_option_override_internal): Also disable the
STV pass if -mstackrealign is enabled.

From-SVN: r239916

PR c++/57728 - adjust testcase

* g++.dg/cpp0x/explicit12.C: Add -save-temps.

From-SVN: r239913

C: Fix missing spaces in 'struct' fix-it hints

In r237714 I added fix-it hints to the C frontend for missing "struct"
keywords e.g.:

spellcheck-typenames.c:69:1: error: unknown type name ‘foo_t’; use
‘struct’ keyword to refer to the type
 foo_t *foo_ptr;
 ^~~~~
 struct

However when using the (not yet in trunk) option
 -fdiagnostics-generate-patch,
the generated patch is nonsensical:

  -foo_t *foo_ptr;
  +structfoo_t *foo_ptr;

Fix the fix-its by adding a trailing space to each one, giving:

  -foo_t *foo_ptr;
  +struct foo_t *foo_ptr;

gcc/c/ChangeLog:
* c-parser.c (c_parser_declaration_or_fndef): Add trailing space
to the insertion fixits for "struct", "union", and "enum".

From-SVN: r239912

Daily bump.

From-SVN: r239911

Fix detection of AVX512IFMA in host_detect_local_cpu

gcc/
* config/i386/driver-i386.c (host_detect_local_cpu): Fix detection of
AVX512IFMA.

From-SVN: r239908

diagnostic-show-locus.c: handle fixits on lines outside the regular ranges

The diagnostic_show_locus implementation determines the set
of line spans that need printing based on the ranges within the
rich_location (in layout::calculate_line_spans).

Currently this doesn't take into account fix-it hints, and hence
we fail to print fix-it hints that are on lines outside of
those ranges.

This patch updates the implementation to take fix-it hints into
account when calculating the pertinent line spans, so that such fix-it
hints do get printed.  It also adds some validation, to ensure that
we don't attempt to print fix-its hints affecting a different source
file.

gcc/ChangeLog:
* diagnostic-show-locus.c (class layout): Add field m_fixit_hints.
(layout_range::intersects_line_p): New method.
(test_range_contains_point_for_single_point): Rename to...
(test_layout_range_for_single_point): ...this, and add testing
for layout_range::intersects_line_p.
(test_range_contains_point_for_single_line): Rename to...
(test_layout_range_for_single_line): ...this,  and add testing
for layout_range::intersects_line_p.
(test_range_contains_point_for_multiple_lines): Rename to...
(test_layout_range_for_multiple_lines): ...this,  and add testing
for layout_range::intersects_line_p.
(layout::layout): Populate m_fixit_hints.
(layout::get_expanded_location): Handle the case of a line-span
for a fix-it hint.
(layout::validate_fixit_hint_p): New method.
(get_line_span_for_fixit_hint): New function.
(layout::calculate_line_spans): Add spans for fixit-hints.
(layout::should_print_annotation_line_p): New method.
(layout::print_any_fixits): Drop param "richloc", instead using
validated fixits in m_fixit_hints.  Add "const" to hint pointers.
(diagnostic_show_locus): Avoid printing blank annotation lines.
(selftest::test_diagnostic_context::test_diagnostic_context):
Initialize show_column and start_span.
(selftest::test_diagnostic_context::start_span_cb): New static
function.
(selftest::test_diagnostic_show_locus_fixit_lines): New function.
(selftest::diagnostic_show_locus_c_tests): Update for function
renamings.  Call test_diagnostic_show_locus_fixit_lines.

libcpp/ChangeLog:
* include/line-map.h (class fixit_remove): Remove stray decl.
(fixit_hint::affects_line_p): Make const.
(fixit_insert::affects_line_p): Likewise.
(fixit_replace::affects_line_p): Likewise.
* line-map.c (fixit_insert::affects_line_p): Likewise.
(fixit_replace::affects_line_p): Likewise.

From-SVN: r239906

re PR tree-optimization/77352 (ICE: verify_ssa failed)

PR fortran/77352
* trans-openmp.c (gfc_trans_omp_parallel_workshare): Always add a
BIND_EXPR with BLOCK around what gfc_trans_omp_workshare returns.

* gfortran.dg/gomp/pr77352.f90: New test.

From-SVN: r239904

re PR fortran/77374 (ICE in resolve_omp_atomic, at fortran/openmp.c:3949)

PR fortran/77374
* parse.c (parse_omp_oacc_atomic): Copy over cp->ext.omp_atomic
to cp->block->ext.omp_atomic.
* resolve.c (gfc_resolve_blocks): Assert block with one or two
EXEC_ASSIGNs for EXEC_*_ATOMIC.
* openmp.c (resolve_omp_atomic): Don't assert one or two
EXEC_ASSIGNs, instead return quietly for EXEC_NOPs and otherwise
error unexpected statements.

* gfortran.dg/gomp/pr77374.f08: New test.

From-SVN: r239903

match.pd: Revert a * (1 << b) relaxation.

2016-08-31  Marc Glisse  <marc.glisse@inria.fr>

PR tree-optimization/73714
gcc/
* match.pd (a * (1 << b)): Revert change from 2016-05-23.
gcc/testsuite/
* gcc.dg/tree-ssa/pr73714.c: New test.

From-SVN: r239902

re PR libfortran/77393 (Revision r237735 changed the behavior of F0.0)

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libgfortran/77393
* gfortran.dg/fmt_f0_2.f90: New test.

From-SVN: r239901

re PR libfortran/77393 (Revision r237735 changed the behavior of F0.0)

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR libgfortran/77393
* io/write.c (kind_from_size): New function to calculate required buffer
size based on kind type. (select_buffer, select_string): Use new
function. (write_float_0, write_real, write_real_g0, write_complex):
Adjust calls to pass parameters needed by new function.

From-SVN: r239900

Constrain std::shared_ptr assignment and resetting

* include/bits/shared_ptr.h (_Assignable): New alias template.
(shared_ptr::operator=(const shared_ptr<_Tp1>&))
(shared_ptr::operator=(shared_ptr<_Tp1>&&))
(shared_ptr::operator=(unique_ptr<_Tp1>&&)): Constrain with
_Assignable.
* include/bits/shared_ptr_base.h (_Assignable): New alias template.
(__shared_ptr::operator=(const __shared_ptr<_Tp1>&))
(__shared_ptr::operator=(__shared_ptr<_Tp1>&&))
(__shared_ptr::operator=(unique_ptr<_Tp1>&&)): Constrain with
_Assignable.
(__shared_ptr::reset(_Tp1*), __shared_ptr::reset(_Tp1*, _Deleter))
(__shared_ptr::reset(_Tp1*, _Deleter, _Alloc)): Constrain with
_Convertible.
* testsuite/20_util/shared_ptr/cons/43820_neg.cc: Change dg-error to
match on any line.
* testsuite/20_util/shared_ptr/cons/void_neg.cc: Likewise.
* testsuite/20_util/shared_ptr/assign/sfinae.cc: New test.
* testsuite/20_util/shared_ptr/assign/shared_ptr_neg.cc: Update
expected errors. Remove unnecessary code.
* testsuite/20_util/shared_ptr/modifiers/reset_sfinae.cc: New test.

From-SVN: r239898

Move comparison object in map/set move assignment

* include/bits/stl_tree.h (_Rb_tree::operator=(_Rb_tree&&)): Move
comparison object.
* testsuite/23_containers/set/move_comparison.cc: New test.

From-SVN: r239897

Add test accidentally not added in revision r239121

* testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
New test.

From-SVN: r239896

runtime: make gsignal stack at least SIGSTKSZ bytes

    The default stack size for the gsignal goroutine, 32K, is not enough on
    ia64.  Make sure that the stack size is at least SIGSTKSZ.

    Reviewed-on: https://go-review.googlesource.com/28224

From-SVN: r239894

selftest.c: avoid explicit "selftest::" qualifiers

gcc/ChangeLog:
* selftest.c: Move "namespace selftest {" to top of file,
removing explicit "selftest::" qualifiers throughout.

From-SVN: r239892

[x86] Don't use builtins for unaligned load/store

2016-08-31  Marc Glisse  <marc.glisse@inria.fr>

gcc/
* config/i386/avx512fintrin.h (__m512_u, __m512i_u, __m512d_u):
New types.
(_mm512_loadu_pd, _mm512_storeu_pd, _mm512_loadu_ps,
_mm512_storeu_ps, _mm512_loadu_si512, _mm512_storeu_si512):
Replace builtin with vector extension.
* config/i386/avxintrin.h (__m256_u, __m256i_u, __m256d_u):
New types.
(_mm256_loadu_pd, _mm256_storeu_pd, _mm256_loadu_ps,
_mm256_storeu_ps, _mm256_loadu_si256, _mm256_storeu_si256):
Replace builtin with vector extension.
* config/i386/emmintrin.h (__m128i_u, __m128d_u): New types.
(_mm_loadu_pd, _mm_storeu_pd, _mm_loadu_si128, _mm_storeu_si128):
Replace builtin with vector extension.
* config/i386/xmmintrin.h (__m128_u): New type.
(_mm_loadu_ps, _mm_storeu_ps): Replace builtin with vector extension.
(_mm_load_ps, _mm_store_ps): Simplify.

gcc/testsuite/
* gcc.target/i386/pr59539-2.c: Adapt options.
* gcc.target/i386/avx512f-vmovdqu32-1.c: Relax expected asm.

From-SVN: r239889

* config/arm/arm.c (thumb1_size_rtx_costs) <SET>: Add missing guard.

From-SVN: r239888

re PR testsuite/77418 (SELECT TYPE associating entity can be (de)allocated)

2016-08-31  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/77418
* gfortran.dg/dtio_5.f90: Remove the non-standard deallocation
of the associate entity and replace with a pointer to the
intended item on the stack.

From-SVN: r239881

[multiple changes]

2016-08-31  Paul Thomas  <pault@gcc.gnu.org>
Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR fortran/48298

* decl.c (access_attr_decl): Include case INTERFACE_DTIO as
appropriate.
* gfortran.h : Add INTRINSIC_FORMATTED and
INTRINSIC_UNFORMATTED to gfc_intrinsic_op. Add INTERFACE_DTIO
to interface type. Add new enum 'dtio_codes'. Add bitfield
'has_dtio_procs' to symbol_attr. Add prototypes
'gfc_check_dtio_interfaces' and 'gfc_find_specific_dtio_proc'.
* interface.c (dtio_op): New function.
(gfc_match_generic_spec): Match generic DTIO interfaces.
(gfc_match_interface): Treat DTIO interfaces in the same way as
(gfc_current_interface_head): Add INTERFACE_DTIO appropriately.
(check_dtio_arg_TKR_intent): New function.
(check_dtio_interface1): New function.
(gfc_check_dtio_interfaces): New function.
(gfc_find_specific_dtio_proc): New function.
* io.c : Add FMT_DT to format_token.
(format_lex): Handle DTIO formatting.
* match.c (gfc_op2string): Add DTIO operators.
* resolve.c (derived_inaccessible): Ignore pointer components
to enclosing derived type.
(resolve_transfer): Resolve transfers that involve DTIO.
procedures. Find the specific subroutine for the transfer and
use its existence to over-ride some of the constraints on
derived types. If the transfer is recursive, require that the
subroutine be so qualified.
(dtio_procs_present): New function.
(resolve_fl_namelist): Remove inhibition of polymorphic objects
in namelists if DTIO read and write subroutines exist. Likewise
for derived types.
(resolve_types): Invoke 'gfc_verify_dtio_procedures'.
* symbol.c : Set 'dtio_procs' using 'minit'.
* trans-decl.c (gfc_finish_var_decl): If a derived-type/class
object is associated with DTIO procedures, make it TREE_STATIC.
* trans-expr.c (gfc_get_vptr_from_expr): If the expression
drills down to a PARM_DECL, extract the vptr correctly.
(gfc_conv_derived_to_class): Check 'info' in the test for
'useflags'. If the se expression exists and is a pointer, use
it as the class _data.
* trans-io.c : Add IOCALL_X_DERIVED to iocall and the function
prototype. Likewise for IOCALL_SET_NML_DTIO_VAL.
(set_parameter_tree): Renamed from 'set_parameter_const', now
returns void and has new tree argument. Calls modified to match
new interface.
(transfer_namelist_element): Transfer DTIO procedure pointer
and vpointer using the new function IOCALL_SET_NML_DTIO_VAL.
(get_dtio_proc): New function.
(transfer_expr): Add new argument for the vptr field of class
objects. Add the code to call the specific DTIO proc, convert
derived types to class and call IOCALL_X_DERIVED.
(trans_transfer): Add BT_CLASS to structures for treatment by
the scalarizer. Obtain the vptr for the dynamic type, both for
scalar and array transfer.

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
Paul Thomas  <pault@gcc.gnu.org>

PR libgfortran/48298
* gfortran.map : Flag _st_set_nml_dtio_var and
_gfortran_transfer_derived.
* io/format.c (format_lex): Detect DTIO formatting.
(parse_format_list): Parse the DTIO format.
(next_format): Include FMT_DT.
* io/format.h : Likewise. Add structure 'udf' to structure
'fnode' to carry the IOTYPE string and the 'vlist'.
* io/io.h : Add prototypes for the two types of DTIO subroutine
and a typedef for gfc_class. Also, add to 'namelist_type'
fields for the pointer to the DTIO procedure and the vtable.
Add fields to struct st_parameter_dt for pointers to the two
types of DTIO subroutine. Add to gfc_unit DTIO specific fields.
(internal_proto): Add prototype for 'read_user_defined' and
'write_user_defined'.
* io/list_read.c (check_buffers): Use the 'current_unit' field.
(unget_char): Likewise.
(eat_spaces): Likewise.
(list_formatted_read_scalar): For case BT_CLASS, call the DTIO
procedure.
(nml_get_obj_data): Likewise when DTIO procedure is present,.
* io/transfer.c : Export prototypes for 'transfer_derived' and
'transfer_derived_write'.
(unformatted_read): For case BT_CLASS, call the DTIO procedure.
(unformatted_write): Likewise.
(formatted_transfer_scalar_read): Likewise.
(formatted_transfer_scalar_write: Likewise.
(transfer_derived): New function.
(data_transfer_init): Set last_char if no child_dtio.
(finalize_transfer): Return if child_dtio set.
(st_write_done): Add condition for child_dtio not set.
Add extra arguments for st_set_nml_var prototype.
(set_nml_var): New function that contains the contents of the
old version of st_set_nml_var. Also sets the 'dtio_sub' and
'vtable' fields of the 'nml' structure.
(st_set_nml_var): Now just calls set_nml_var with 'dtio_sub'
and 'vtable' NULL.
(st_set_nml_dtio_var): New function that calls set_nml_var.
* io/unit.c (get_external_unit): If the found unit child_dtio
is non zero, don't do any mutex locking/unlocking.  Just
return the unit.
* io/unix.c (tempfile_open): Revert to C style comment.
* io/write.c (list_formatted_write_scalar): Do the DTIO call.
(nml_write_obj): Add BT_CLASS and do the DTIO call.

2016-08-31  Jerry DeLisle  <jvdelisle@gcc.gnu.org>
Paul Thomas  <pault@gcc.gnu.org>

PR fortran/48298
* gfortran.dg/dtio_1.f90: New test.
* gfortran.dg/dtio_2.f90: New test.
* gfortran.dg/dtio_3.f90: New test.
* gfortran.dg/dtio_4.f90: New test.
* gfortran.dg/dtio_5.f90: New test.
* gfortran.dg/dtio_6.f90: New test.
* gfortran.dg/dtio_7.f90: New test.
* gfortran.dg/dtio_8.f90: New test.
* gfortran.dg/dtio_9.f90: New test.
* gfortran.dg/dtio_10.f90: New test.

From-SVN: r239880

Remove arbitrary limits from rich_location

This patch eliminates the hard-coded limits within rich_location
(up to 3 ranges, up to 2 fixits).  The common case is still
handled by embedding the values inside rich_location - it only
uses dynamic allocation if these limits are exceeded, so
creation of rich_location instances on the stack should still
be fast.  This is implemented via a new container class,
semi_embedded_vec <T, N>.

gcc/ChangeLog:
* diagnostic-show-locus.c (colorizer::begin_state): Support more
than 3 ranges per diagnostic by alternating between color 1 and
color 2.
(layout::layout): Replace use of rich_location::MAX_RANGES
with richloc->get_num_locations ().
(layout::calculate_line_spans): Replace use of
rich_location::MAX_RANGES with m_layout_ranges.length ().
(layout::print_annotation_line): Handle arbitrary numbers of
ranges in caret-printing by defaulting to '^'.
(selftest::test_one_liner_many_fixits): New function.
(test_diagnostic_show_locus_one_liner): Call it.
* diagnostic.c (diagnostic_initialize): Update for renaming
of rich_location::MAX_RANGES to
rich_location::STATICALLY_ALLOCATED_RANGES.
* diagnostic.h (struct diagnostic_context): Likewise.

gcc/testsuite/ChangeLog:
* gcc.dg/plugin/diagnostic-test-show-locus-bw.c
(test_many_nested_locations): New function.
* gcc.dg/plugin/diagnostic_plugin_test_show_locus.c
(test_show_locus): Handle "test_many_nested_locations".

libcpp/ChangeLog:
* include/line-map.h (class semi_embedded_vec): New class.
(semi_embedded_vec<T, NUM_EMBEDDED>::semi_embedded_vec): New ctor.
(semi_embedded_vec<T, NUM_EMBEDDED>::~semi_embedded_vec): New
dtor.
(semi_embedded_vec<T, NUM_EMBEDDED>::operator[]): New methods.
(semi_embedded_vec<T, NUM_EMBEDDED>::push): New method.
(semi_embedded_vec<T, NUM_EMBEDDED>::truncate): New method.
(rich_location::get_num_locations): Reimplement in terms of
m_ranges.
(rich_location::get_range): Make non-inline.
(rich_location::get_num_fixit_hints): Reimplement in terms of
m_fixit_hints.
(rich_location::add_fixit): New function.
(rich_location::MAX_RANGES): Rename to...
(rich_location::STATICALLY_ALLOCATED_RANGES): ...this.
(rich_location::MAX_FIXIT_HINTS): Rename to...
(rich_location::STATICALLY_ALLOCATED_RANGES): ...this, and make
private.
(rich_location::m_num_ranges): Eliminate in favor of...
(rich_location::m_ranges): ...this, converting from a fixed-size
array to a semi_embedded_vec.
(rich_location::m_num_fixit_hints): Eliminate in favor of...
(rich_location::m_fixit_hints): ...this, converting from a
fixed-size array to a semi_embedded_vec.
* line-map.c (rich_location::rich_location): Update for above
changes.
(rich_location::~rich_location): Likewise.
(rich_location::get_loc): Likewise.
(rich_location::get_range): New methods.
(rich_location::add_range): Update for above changes.
(rich_location::set_range): Likewise.
(rich_location::add_fixit_insert): Likewise.
(rich_location::add_fixit_replace): Likewise.
(rich_location::get_last_fixit_hint): Likewise.
(rich_location::reject_impossible_fixit): Likewise.
(rich_location::add_fixit): New method.

From-SVN: r239879

Daily bump.

From-SVN: r239878

selftest: split out named_temp_file from temp_source_file

Split out a new base class for temp_source_file, named_temp_file,
moving the deletion to the base class dtor, so that we can write
out temporary files in other ways in selftests.

gcc/ChangeLog:
* selftest.c (selftest::named_temp_file::named_temp_file): New
ctor.
(selftest::temp_source_file::~temp_source_file): Move to...
(selftest::named_temp_file::~named_temp_file): ...here.
(selftest::test_named_temp_file): New function.
(selftest::selftest_c_tests): Call test_named_temp_file.
* selftest.h (class named_temp_file): New class.
(class temp_source_file): Convert to a subclass of named_temp_file.

From-SVN: r239875

C++: add fixit for '>>' template error

gcc/cp/ChangeLog:
* parser.c (cp_parser_enclosed_template_argument_list): Add fix-it
hint to ">>" within nested template argument list error.

gcc/testsuite/ChangeLog:
* g++.dg/template/double-greater-than-fixit.C: New test case.

From-SVN: r239873

runtime: use -fgo-c-header to build C header file

    Use the new -fgo-c-header option to build a header file for the Go
    runtime code in libgo/go/runtime, and use the new header file in the C
    runtime code in libgo/runtime.  This will ensure that the Go code and C
    code share the same data structures as we convert the runtime from C to
    Go.

    The new file libgo/go/runtime/runtime2.go is copied from the Go 1.7
    release, and then edited to remove unnecessary data structures and
    modify others for use with libgo.

    The new file libgo/go/runtime/mcache.go is an initial version of the
    same files in the Go 1.7 release, and will be replaced by the Go 1.7
    file when we convert to the new memory allocator.

    The new file libgo/go/runtime/type.go describes the gccgo version of the
    reflection data structures, and replaces the Go 1.7 runtime file which
    describes the gc version of those structures.

    Using the new header file means changing a number of struct fields to
    use Go naming conventions (that is, no underscores) and to rename
    constants to have a leading underscore so that they are not exported
    from the Go package.  These names were updated in the C code.

    The C code was also changed to drop the thread-local variable m, as was
    done some time ago in the gc sources.  Now the m field is always
    accessed using g->m, where g is the single remaining thread-local
    variable.  This in turn required some adjustments to set g->m correctly
    in all cases.

    Also pass the new -fgo-compiling-runtime option when compiling the
    runtime package, although that option doesn't do anything yet.

    Reviewed-on: https://go-review.googlesource.com/28051

From-SVN: r239872

re PR libstdc++/77395 (std::is_constructible is false for type constructible via implicit conversion operator affecting std::tuple)

PR libstdc++/77395
* include/std/type_traits (is_constructible): Forward-declare...
(__is_base_to_derived_ref): ...and use here.
* testsuite/20_util/declval/requirements/1_neg.cc: Adjust.
* testsuite/20_util/is_constructible/77395.cc: New.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
Likewise.
* testsuite/20_util/tuple/77395.cc: New.

From-SVN: r239870

2.cc: Move dg-do run directive above dg-require-namedlocale directive.

* testsuite/22_locale/time_get/get/char/2.cc: Move dg-do run
directive above dg-require-namedlocale directive.
* testsuite/22_locale/time_get/get/wchar_t/2.cc: Ditto.
* testsuite/27_io/manipulators/extended/get_time/char/2.cc: Ditto.
* testsuite/27_io/manipulators/extended/get_time/wchar_t/2.cc: Ditto.
* testsuite/27_io/manipulators/extended/put_time/char/2.cc: Ditto.
* testsuite/27_io/manipulators/extended/put_time/wchar_t/2.cc: Ditto.

From-SVN: r239867

rs6000: Don't emit a use of LR in returns and sibcalls

The exit block (to which every return artificially jumps) already has
a use of LR.  The LR use in all returns and sibcalls is an anachronism,
probably made unnecessary by the dataflow merge.  The simple_returns
that shrink-wrapping generates also do not have such a use.  Newer
backends do not do this either it seems.

With this use removed, a normal return is no longer a parallel but just
a return insn, and cfgcleanup then can transform conditional jumps to
those into conditional returns.

This splits the return emission code with restoring_FPRs_inline from
that without it; this is simpler code, fewer lines, and less indentation.

The return_internal_<mode> pattern can now be deleted since nothing uses
it anymore.

* config/rs6000/rs6000.c (rs6000_emit_epilogue): Do not emit
USEs of LR_REGNO in returns and sibcalls.
(rs6000_output_mi_thunk): Similar.
(rs6000_sibcall_aix): Similar.
* config/rs6000/rs6000.md (sibcall, sibcall_value, sibcall_local32,
sibcall_local64, sibcall_value_local32, sibcall_value_local64,
sibcall_nonlocal_sysv<mode>, sibcall_value_nonlocal_sysv<mode>):
Remove the USE of LR_REGNO from the patterns as well.  Delete an
obsolete comment.
(return_internal_<mode>): Delete.

From-SVN: r239866

[PATCH][Aarch64][gcc] Fix vld2/3/4 on big endian systems

On behalf of Tamar Christina  <tamar.christina@arm.com>

gcc/

* gcc/config/aarch64/aarch64-simd.md
(aarch64_ld2<mode>_dreg_le): New.
(aarch64_ld2<mode>_dreg_be): New.
(aarch64_ld2<mode>_dreg): Removed.
(aarch64_ld3<mode>_dreg_le): New.
(aarch64_ld3<mode>_dreg_be): New.
(aarch64_ld3<mode>_dreg): Removed.
(aarch64_ld4<mode>_dreg_le): New.
(aarch64_ld4<mode>_dreg_be): New.
(aarch64_ld4<mode>_dreg): Removed.
(aarch64_ld<VSTRUCT:nregs><VDC:mode>): Wrapper around _le, _be.

From-SVN: r239865

gfortran.texi: Fix typo in STRUCTURE documentation.

2016-08-30  Fritz Reese  <fritzoreese@gmail.com>

* gcc/fortran/gfortran.texi: Fix typo in STRUCTURE documentation.

From-SVN: r239862

rich_location: add convenience overloads for adding fix-it hints

Adding a fix-it hint to a diagnostic usually follows one of these
patterns:
(a) an insertion fix-its, with the insertion at the primary caret location
(b) a removals/replacements, affecting the range of the primary location

(other cases are possible, e.g. multiple fix-its, and affecting other
locations, but these are the common ones)

Given these common cases, this patch adds overloads of the rich_location
methods for adding fix-it hints, so that the location information can
be omitted if it matches that of the primary location within the
rich_location.

Similarly when adding "remove" and "replace" fix-it hints to a diagnostic,
it's tedious to have to extract the source_range from a location_t
(aka source_location).  To make this more convenient, this patch
adds overload of the rich_location::add_fixit_remove/replace methods,
accepting a source_location directly.

The patch updates the various in-tree users of fix-it hints to use
the new simpler API where appropriate.  I didn't touch the case where
there are multiple fix-its in one rich_location, as it seems better to
be more explicit about locations for this case (adding a pair of parens
in warn_logical_not_parentheses).

The above makes the gcc_rich_location::add_fixit_misspelled_id overload
taking a const char * rather redundant, so I eliminated it.

gcc/c/ChangeLog:
* c-decl.c (implicit_decl_warning): Use add_fixit_replace
rather than add_fixit_misspelled_id.
(undeclared_variable): Likewise.
* c-parser.c (c_parser_declaration_or_fndef): Likewise.  Remove
now-redundant "here" params from add_fixit_insert method calls.
(c_parser_parameter_declaration): Likewise.
* c-typeck.c (build_component_ref): Remove now-redundant range
param from add_fixit_replace method calls.

gcc/cp/ChangeLog:
* name-lookup.c (suggest_alternatives_for): Use add_fixit_replace
rather than add_fixit_misspelled_id.
* parser.c (cp_parser_diagnose_invalid_type_name): Likewise.

gcc/ChangeLog:
* diagnostic-show-locus.c (test_one_liner_fixit_insert): Remove
redundant location param.
(test_one_liner_fixit_remove): Likewise.
(test_one_liner_fixit_replace): Likewise.
(test_one_liner_fixit_replace_equal_secondary_range): Likewise.
* gcc-rich-location.c
(gcc_rich_location::add_fixit_misspelled_id): Eliminate call to
get_range_from_loc.  Drop overload taking a const char *.
* gcc-rich-location.h
(gcc_rich_location::add_fixit_misspelled_id): Drop overload taking
a const char *.

libcpp/ChangeLog:
* include/line-map.h (rich_location::add_fixit_insert): Add
comments.  Add overload omitting the source_location param.
(rich_location::add_fixit_remove): Add comments.  Add overloads
omitting the range, and accepting a source_location.
(rich_location::add_fixit_replace): Likewise.
* line-map.c (rich_location::add_fixit_insert): Add comments.  Add
overload omitting the source_location param.
(rich_location::add_fixit_remove): Add comments.  Add overloads
omitting the range, and accepting a source_location.
(rich_location::add_fixit_replace): Likewise.

From-SVN: r239861

report supported function classes correctly on *-musl

gcc/
* config/linux.c (linux_libc_has_function): Return true on musl.

From-SVN: r239860

disable ifunc on *-musl by default

gcc/
* config.gcc (*-*-*musl*): Disable gnu-indirect-function.

From-SVN: r239859

postreload-gcse.c (bb_has_well_behaved_predecessors): Tweak criterion used for abnormal egdes.

* postreload-gcse.c (bb_has_well_behaved_predecessors): Tweak criterion
used for abnormal egdes.

From-SVN: r239858

re PR tree-optimization/69047 (memcpy is not as optimized as union is)

2016-08-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/69047
* gcc.dg/pr69047.c: Fix byte-order check.

From-SVN: r239857

re PR tree-optimization/72866 (Compile time hog w/ -O3 (-Ofast))

PR tree-optimization/72866
* tree-vect-patterns.c (search_type_for_mask): Turn into
a small wrapper, move all code to ...
(search_type_for_mask_1): ... this new function.  Add caching
and adjust recursive calls.

* gcc.dg/vect/pr72866.c: New test.

From-SVN: r239856

re PR c++/77363 (Missing debug information in DWARF)

PR debug/77363
* dwarf2out.c (modified_type_die): Use lookup_type_die (type)
instead of lookup_type_die (type_main_variant (type)) even for array
types.

* g++.dg/debug/dwarf2/pr77363.C: New test.

From-SVN: r239855

re PR middle-end/77377 (c-c++-common/pr59037.c ICEs with -fpic -msse on i686)

PR middle-end/77377
* simplify-rtx.c (avoid_constant_pool_reference): For out of bounds
constant pool reference return x instead of c.

* gcc.target/i386/pr77377.c: New test.

From-SVN: r239854

re PR debug/77389 (FAIL: g++.dg/debug/dwarf2/template-params-12f.C  -std=gnu++11  scan-assembler-times DIE \\\\([^\\n]*\\\\) DW_TAG_template_value_param ...)

PR debug/77389
* g++.dg/debug/dwarf2/template-params-12f.C: Pass -gno-strict-dwarf
in dg-options.

From-SVN: r239853

compiler: add -fgo-c-header=FILE to create a C header

    The new -fgo-c-header=FILE option will write a C header file defining
    all the struct types and numeric const values in package scope.  This
    will be used when building the Go runtime package (libgo/go/runtime) to
    generate a C header file that may be included by the C code in the C
    runtime package (libgo/runtime).

    This will ensure that the Go code and C code are working with the same
    data structures as we convert the runtime from C to Go to upgrade to the
    current GC runtime, notably the concurrent garbage collector.

    Reviewed-on: https://go-review.googlesource.com/28000

* lang.opt (fgo-c-header, fgo-compiling-runtime): New options.
* go-c.h (struct go_create_gogo_args): Define.
(go_create_gogo): Change declaration to take struct pointer.
* go-lang.c (go_c_header): New static variable.
(go_langhook_init): Update call to go_create_gogo.
* gccgo.texi (Invoking gccgo): Document -fgo-c-header and
-fgo-compiling-runtime.

From-SVN: r239852

Eradicate MQ some more

Nothing uses MQ anymore, but it still shows up in all the dump files.
This patch removes it from CALL_REALLY_USED_REGISTERS so that that does
not happen anymore (it is still a fixed register, there should be no
functional change).

* config/rs6000/rs6000.h (CALL_REALLY_USED_REGISTERS): Do not
include MQ.

From-SVN: r239851