re PR tree-optimization/89143 (comparison of abs(i) against excessive constant less than UXXX_MAX no longer folded)

	PR tree-optimization/89143
	* wide-int-range.h (wide_int_range_absu): Declare.
	* wide-int-range.cc (wide_int_range_absu): New function.
	* tree-vrp.c (extract_range_from_unary_expr): Handle ABSU_EXPR.

	* gcc.dg/tree-ssa/vrp121.c: New test.

From-SVN: r268445

	PR tree-optimization/88107
	* tree-cfg.c (find_outermost_region_in_block): Add ALL argument,
	instead of assertion that eh_region_outermost is non-NULL, if it
	is NULL, set *ALL to true and return NULL.
	(move_sese_region_to_fn): Adjust caller, if all is set, call
	duplicate_eh_regions with NULL region.

	* gcc.dg/gomp/pr88107.c: New test.

From-SVN: r268444

	PR c++/87175
	* parser.c (cp_parser_gnu_attributes_opt): Set ok to false
	if require_open failed.

	* g++.dg/ext/attrib57.C: New test.

From-SVN: r268443

2019-02-01  Richard Biener  <rguenth@suse.de>

	PR rtl-optimization/88593
	* mode-switching.c (optimize_mode_switching): Free dominators before
	calling cleanup_cfg.

From-SVN: r268442

re PR tree-optimization/88932 (ICE: verify_ssa failed (Error: definition in block 29 does not dominate use in block 25))

	PR tree-optimization/88932
	* tree-predcom.c (try_combine_chains): Get loop bbs in dom order.

	gcc/testsuite
	* gfortran.dg/pr88932.f90: New test.

From-SVN: r268439

	* constexpr.c (cxx_eval_switch_expr): Use SWITCH_COND and SWITCH_BODY.
	(cxx_eval_constant_expression) <case COND_EXPR>: Don't look for the
	label in the else branch if we found it in the then branch.

	* g++.dg/cpp1y/constexpr-88983.C: New test.

From-SVN: r268438

From-SVN: r268437

	PR middle-end/89137
	* omp-low.c (lower_omp_task_reductions): Drop redundant test to avoid
	bogus clang warning.

From-SVN: r268434

From-SVN: r268433

2019-01-31  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88669
	* resolve.c (resolve_component): If the reference is a BT_CLASS,
	copy the contiguous attribute from the reference and use the
	correct attributes.

2019-01-31  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/88669
	* gfortran.dg/contiguous_9.f90: New test.

From-SVN: r268432

	* config/alpha/t-linux: Add -mfp-rounding-mode=d
	to HOST_LIBGCC2_CFLAGS.

From-SVN: r268430

	* constexpr.c (adjust_temp_type): Use copy_node and change the type
	instead of using build_constructor.
	* decl.c (reshape_init_r): Don't reshape a digested initializer.
	Return the initializer for COMPOUND_LITERAL_P.

	* g++.dg/cpp0x/initlist107.C: New test.
	* g++.dg/cpp0x/initlist108.C: New test.
	* g++.dg/cpp0x/initlist109.C: New test.
	* g++.dg/cpp0x/initlist110.C: New test.
	* g++.dg/cpp0x/initlist111.C: New test.
	* g++.dg/cpp0x/initlist112.C: New test.
	* g++.dg/init/ptrfn4.C: New test.

From-SVN: r268428

re PR target/89071 (AVX vcvtsd2ss lets us avoid PXOR dependency breaking for scalar float<->double and other scalar xmm,xmm instructions)

	PR target/89071
	* config/i386/i386.md (*extendsfdf2): Split out reg->reg
	alternative to avoid partial SSE register stall for TARGET_AVX.
	(truncdfsf2): Ditto.
	(sse4_1_round<mode>2): Ditto.

From-SVN: r268427

PR c/89122 reports that we emit a bogus fix-it hint for the case where
the code uses FLT_MAX, but has included <limits.h> rather than <float.h>:

x.c:3:11: error: 'FLT_MAX' undeclared here (not in a function); did you
  mean 'INT_MAX'?
    3 | float f = FLT_MAX;
      |           ^~~~~~~
      |           INT_MAX

This patch adds some knowledge of <float.h> (and <cfloat>) to
known-headers.cc, fixing the issue:

x.c:3:11: error: 'FLT_MAX' undeclared here (not in a function)
    3 | float f = FLT_MAX;
      |           ^~~~~~~
x.c:2:1: note: 'FLT_MAX' is defined in header '<float.h>'; did you forget
  to '#include <float.h>'?
    1 | #include <limits.h>
  +++ |+#include <float.h>
    2 |

gcc/c-family/ChangeLog:
	PR c/89122
	* known-headers.cc (get_stdlib_header_for_name): Add
	{FLT|DBL|LDBL}_{MAX|MIN} to "hints" array.

gcc/testsuite/ChangeLog:
	PR c/89122
	* g++.dg/spellcheck-stdlib.C (test_FLT_MAX): New test.
	* gcc.dg/spellcheck-stdlib.c (test_FLT_MAX): New test.

From-SVN: r268426

In this testcase, we look for an instantiation of the outer lambda from
within the inner lambda.  enclosing_instantiation_of didn't handle this
properly, as it assumed that any references would be from the same lambda
nesting depth.  Fixed thus.

	* cp-tree.h (LAMBDA_EXPR_INSTANTIATED): New.
	* pt.c (tsubst_lambda_expr): Set it.
	(instantiated_lambda_fn_p): Check it.
	(enclosing_instantiation_of): Use it.

From-SVN: r268424

2018-01-31  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR tree-optimization/89008
	* gimple-ssa-strength-reduction.c (slsr_process_mul): Don't
	process anything of the form X * 0.

From-SVN: r268422

The 'debugaltlink_name_len =+ 1' bug reported in PR89136 exposes the fact that
the build-id is not verified for the .gnu_debugaltlink.

Fix both problems.

2019-01-31  Tom de Vries  <tdevries@suse.de>

	PR libbacktrace/89136
	* elf.c (elf_add): Read build-id if with_buildid_data.  Fix
	'debugaltlink_name_len =+ 1'.

From-SVN: r268419

2019-01-31  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89135
	* tree-ssa-phiprop.c (pass_phiprop::execute): Skip blocks
	with abnormal preds.

	* gcc.dg/torture/pr89135.c: New testcase.

From-SVN: r268417

re PR sanitizer/89124 (__attribute__((no_sanitize_address)) interferes with __attribute__((target(xxx))))

	PR sanitizer/89124
	* ipa-inline.c (sanitize_attrs_match_for_inline_p): Allow inlining
	always_inline callees into no_sanitize_address callers.

	* c-c++-common/asan/pr89124.c: New test.

From-SVN: r268415

2019-01-31  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/89115
	* lra.c (lra_rtx_hash): Properly hash CONST_INT values.

From-SVN: r268414

	PR libstdc++/88170
	* c-pretty-print.c (pp_c_enumeration_constant): Print always as
	a C cast in pp_c_flag_gnu_v3 mode.

	* cxx-pretty-print.c (pp_cxx_enumeration_constant): Print always as
	a C cast in pp_c_flag_gnu_v3 mode.

From-SVN: r268413

2019-01-30  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR fortran/52564
	* io.c (match_io): Add check for comma after '*' without subsequent
	IO list.

	* gfortran.dg/print_2.f90: New test.

From-SVN: r268412

gcc/ChangeLog:

	PR other/89106
	* doc/extend.texi (cast to a union): Correct and expand.

From-SVN: r268411

From-SVN: r268410

	PR c++/88988
	* lambda.c (is_capture_proxy): Don't return true for
	DECL_OMP_PRIVATIZED_MEMBER artificial vars.

	* testsuite/libgomp.c++/pr88988.C: New test.

From-SVN: r268407

Previously the operator+=(extension) call would have re-parsed the path
and recreated the components with the right extension. Since optimising
it to not re-parse the whole string, we need to actually remove the
extension from the final filename before appending anything to it, and
append the dot to that final component too.

	PR libstdc++/89117
	* src/c++17/fs_path.cc (path::replace_extension): Erase extension from
	final component as well as from _M_pathname. Append the dot using
	operator+= instead of only to _M_pathname.
	(path::_M_find_extension): Reformat slightly.
	* testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
	Add more test cases.

From-SVN: r268406

	* config/i386/sfp-exceptions.c (__sfp_handle_exceptions):
	Remove stray semicolon.

From-SVN: r268405

2019-01-30  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/87246
	* lra-constraints.c (simplify_operand_subreg): Reload memory
	in subreg if the address became invalid.

2019-01-30  Vladimir Makarov  <vmakarov@redhat.com>

	PR rtl-optimization/87246
	* gcc.target/i386/pr87246.c: New.

From-SVN: r268404

2019-01-30  Bill Schmidt  <wschmidt@linux.ibm.com>

	PR target/87064
	* config/rs6000/vsx.md (*vsx_reduc_<VEC_reduc_name>_v4sf_scalar):
	Disable for little-endian.

From-SVN: r268403

	PR fortran/88678
	* config/fpu-glibc.h (support_fpu_trap): Do not try to enable
	exceptions to determine if exception is supported.

From-SVN: r268402

	* pt.c (tsubst_copy_and_build): Handle RANGE_EXPR.

	* g++.dg/cpp0x/initlist-value3.C: New test.

From-SVN: r268400

From-SVN: r268398

    
    Fixes golang/go#28252.
    
    Reviewed-on: https://go-review.googlesource.com/c/160077

From-SVN: r268397

2019-01-30  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	PR fortran/52884
	* invoke.texi: Document the promotion of double precision
	constants.

From-SVN: r268396

2019-01-30  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/89115
	* opts.c (default_options_optimization): Reduce
	PARAM_MAX_DSE_ACTIVE_LOCAL_STORES by a factor of 10 at -O1.
	Make PARAM_LOOP_INVARIANT_MAX_BBS_IN_LOOP reduction relative
	to the default.

From-SVN: r268394

	PR fortran/88678
	* config/fpu-glibc.h (set_fpu_trap_exceptions): Clear stalled
	exception flags before changing trap mode.  Optimize to call
	feenableexcept and fedisableexcept only once.

From-SVN: r268392

gcc/ChangeLog:

2019-01-30  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* config/rs6000/rs6000-c.c (altivec-resolve_overloaded_builtin):
	Change handling of ALTIVEC_BUILTIN_VEC_EXTRACT.  Coerce result to
	type of vector element when vec_extract is implemented by direct
	move.

gcc/testsuite/ChangeLog:

2019-01-30  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* gcc.target/powerpc/vec-extract-schar-1.c: New test.
	* gcc.target/powerpc/vec-extract-sint-1.c: New test.
	* gcc.target/powerpc/vec-extract-sint128-1.c: New test.
	* gcc.target/powerpc/vec-extract-slong-1.c: New test.
	* gcc.target/powerpc/vec-extract-sshort-1.c: New test.
	* gcc.target/powerpc/vec-extract-uchar-1.c: New test.
	* gcc.target/powerpc/vec-extract-uint-1.c: New test.
	* gcc.target/powerpc/vec-extract-uint128-1.c: New test.
	* gcc.target/powerpc/vec-extract-ulong-1.c: New test.
	* gcc.target/powerpc/vec-extract-ushort-1.c: New test.

From-SVN: r268391

	gcc/
	* doc/invoke.texi (C Language Options): List "-fopenacc-dim".

From-SVN: r268390

2019-01-30  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/89111
	* tree-ssa-loop-im.c (gather_mem_refs_stmt): Restrict
	canonicalization to appropriately sized access types.

	* gcc.dg/torture/pr89111.c: New testcase.

From-SVN: r268388

2019-01-30  Andrew Stubbs  <ams@codesourcery.com>

	PR testsuite/88920

	gcc/testsuite/
	* lib/target-supports.exp: Cache result.

From-SVN: r268384