re PR middle-end/35691 (Missed (a == 0) && (b == 0) into (a|(typeof(a)(b)) == 0 when the types don't match)

	PR middle-end/35691
	* match.pd: Simplify x == -1 & y == -1 into (x & y) == -1
	and x != -1 | y != -1 into (x & y) != -1.

	* gcc.dg/pr35691-1.c: Use -fdump-tree-forwprop1-details
	instead of -fdump-tree-forwprop-details in dg-options.
	* gcc.dg/pr35691-2.c: Likewise.
	* gcc.dg/pr35691-3.c: New test.
	* gcc.dg/pr35691-4.c: New test.

From-SVN: r253107

	PR sanitizer/81929
	* tree.c (struct replace_placeholders_t): Add pset field.
	(replace_placeholders_r): Call cp_walk_tree with d->pset as
	last argument instead of NULL.  Formatting fix.
	(replace_placeholders): Add pset variable, add its address
	into data.  Pass &pset instead of NULL to cp_walk_tree.

	* g++.dg/ubsan/pr81929.C: New test.

From-SVN: r253106

    
    Reviewed-on: https://go-review.googlesource.com/64592

From-SVN: r253105

2017-09-22  Steve Ellcey  <sellcey@cavium.com>

	* config.gcc: Add new case statement to set
	default_gnu_indirect_function.  Remove it from x86_64-*-linux*,
	i[34567]86-*, powerpc*-*-linux*spe*, powerpc*-*-linux*, s390-*-linux*,
	s390x-*-linux* case statements.   Added aarch64 to the list of
	supported architectures.

From-SVN: r253104

This PR shows that we weren't filtering out irrelevant stmts in
vect_get_peeling_costs_all_drs (unlike related loops in which
we iterate over all datarefs).

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/82289
	* tree-vect-data-refs.c (vect_get_peeling_costs_all_drs): Check
	STMT_VINFO_RELEVANT_P.

gcc/testsuite/
	PR tree-optimization/82289
	* gcc.dg/vect/pr82289.c: New test.

From-SVN: r253103

extract_range_from_binary_expr_1 had:

      if (range_int_cst_p (&vr0)
          && range_int_cst_p (&vr1)
          && TYPE_OVERFLOW_WRAPS (expr_type))
        ...
      ...
      extract_range_from_multiplicative_op_1 (vr, code, &vr0, &vr1);

but extract_range_from_multiplicative_op_1 also requires range_int_cst_p.
I think we should bail out if either range isn't a constant.

This might only be theoretical with current sources, but it's needed
once polynomial constants are added.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vrp.c (extract_range_from_multiplicative_op_1): Assert
	for VR_RANGE only; don't allow VR_ANTI_RANGE.
	(extract_range_from_binary_expr_1): Don't call
	extract_range_from_multiplicative_op_1 if !range_int_cst_p.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253102

The vectoriser aligned vectors to TYPE_ALIGN unconditionally, although
there was also a hard-coded assumption that this was equal to the type
size.  This was inconvenient for SVE for two reasons:

- When compiling for a specific power-of-2 SVE vector length, we might
  want to align to a full vector.  However, the TYPE_ALIGN is governed
  by the ABI alignment, which is 128 bits regardless of size.

- For vector-length-agnostic code it doesn't usually make sense to align,
  since the runtime vector length might not be a power of two.  Even for
  power of two sizes, there's no guarantee that aligning to the previous
  16 bytes will be an improveent.

This patch therefore adds a target hook to control the preferred
vectoriser (as opposed to ABI) alignment.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* target.def (preferred_vector_alignment): New hook.
	* doc/tm.texi.in (TARGET_VECTORIZE_PREFERRED_VECTOR_ALIGNMENT): New
	hook.
	* doc/tm.texi: Regenerate.
	* targhooks.h (default_preferred_vector_alignment): Declare.
	* targhooks.c (default_preferred_vector_alignment): New function.
	* tree-vectorizer.h (dataref_aux): Add a target_alignment field.
	Expand commentary.
	(DR_TARGET_ALIGNMENT): New macro.
	(aligned_access_p): Update commentary.
	(vect_known_alignment_in_bytes): New function.
	* tree-vect-data-refs.c (vect_calculate_required_alignment): New
	function.
	(vect_compute_data_ref_alignment): Set DR_TARGET_ALIGNMENT.
	Calculate the misalignment based on the target alignment rather than
	the vector size.
	(vect_update_misalignment_for_peel): Use DR_TARGET_ALIGMENT
	rather than TYPE_ALIGN / BITS_PER_UNIT to update the misalignment.
	(vect_enhance_data_refs_alignment): Mask the byte misalignment with
	the target alignment, rather than masking the element misalignment
	with the number of elements in a vector.  Also use the target
	alignment when calculating the maximum number of peels.
	(vect_find_same_alignment_drs): Use vect_calculate_required_alignment
	instead of TYPE_ALIGN_UNIT.
	(vect_duplicate_ssa_name_ptr_info): Remove stmt_info parameter.
	Measure DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT.
	(vect_create_addr_base_for_vector_ref): Update call accordingly.
	(vect_create_data_ref_ptr): Likewise.
	(vect_setup_realignment): Realign by ANDing with
	-DR_TARGET_MISALIGNMENT.
	* tree-vect-loop-manip.c (vect_gen_prolog_loop_niters): Calculate
	the number of peels based on DR_TARGET_ALIGNMENT.
	* tree-vect-stmts.c (get_group_load_store_type): Compare the gap
	with the guaranteed alignment boundary when deciding whether
	overrun is OK.
	(vectorizable_mask_load_store): Interpret DR_MISALIGNMENT
	relative to DR_TARGET_ALIGNMENT instead of TYPE_ALIGN_UNIT.
	(ensure_base_align): Remove stmt_info parameter.  Get the
	target base alignment from DR_TARGET_ALIGNMENT.
	(vectorizable_store): Update call accordingly.   Interpret
	DR_MISALIGNMENT relative to DR_TARGET_ALIGNMENT instead of
	TYPE_ALIGN_UNIT.
	(vectorizable_load): Likewise.

gcc/testsuite/
	* gcc.dg/vect/vect-outer-3a.c: Adjust dump scan for new wording
	of alignment message.
	* gcc.dg/vect/vect-outer-3a-big-array.c: Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253101

gcc/testsuite/ChangeLog:

	PR c/81854
	* gcc.target/i386/pr80732.c: Correct a type error.

From-SVN: r253100

This patch adds a helper function for getting the number of bytes
accessed by an unvectorised data reference, which helps when general
modes have a variable size.

2017-09-22  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree-vectorizer.h (vect_get_scalar_dr_size): New function.
	* tree-vect-data-refs.c (vect_update_misalignment_for_peel): Use it.
	(vect_enhance_data_refs_alignment): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253099

This patch adds a bit more error checking to parsecpu.awk to ensure
that statements are not missing arguments or have excess arguments
beyond those permitted.  It also slightly improves the handling of
errors so that we terminate properly if parsing fails and be as
helpful as we can while in the parsing phase.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

	* config/arm/parsecpu.awk (fatal): Note that we've encountered an
	error.  Only quit immediately if parsing is complete.
	(BEGIN): Initialize fatal_err and parse_done.
	(begin fpu, end fpu): Check number of arguments.
	(begin arch, end arch): Likewise.
	(begin cpu, end cpu): Likewise.
	(cname, tune for, tune flags, architecture, fpu, option): Likewise.
	(optalias): Likewise.

From-SVN: r253098

This patch autogenerates arm-isa.h from new entries in arm-cpus.in.
This has the primary advantage that it makes the description file more
self-contained, but it also solves the 'array dimensioning' problem
that Tamar recently encountered.  It adds two new constructs to
arm-cpus.in: features and fgroups.  Fgroups are simply a way of naming
a group of feature bits so that they can be referenced together.  We
follow the convention that feature bits are all lower case, while
fgroups are (predominantly) upper case. This is helpful as in some
contexts they share the same namespace. Most of the minor changes in
this patch are related to adopting this new naming convention.

2017-09-22  Richard Earnshaw  <richard.earnshaw@arm.com>

	* config.gcc (arm*-*-*): Don't add arm-isa.h to tm_p_file.
	* config/arm/arm-isa.h: Delete.  Move definitions to ...
	* arm-cpus.in: ... here.  Use new feature and fgroup values.
	* config/arm/arm.c (arm_option_override): Use lower case for feature
	bit names.
	* config/arm/arm.h (TARGET_HARD_FLOAT): Likewise.
	(TARGET_VFP3, TARGET_VFP5, TARGET_FMA): Likewise.
	* config/arm/parsecpu.awk (END): Add new command 'isa'.
	(isa_pfx): Delete.
	(print_isa_bits_for): New function.
	(gen_isa): New function.
	(gen_comm_data): Use print_isa_bits_for.
	(define feature): New keyword.
	(define fgroup): New keyword.
	* config/arm/t-arm (TM_H): Remove.
	(GTM_H): Add arm-isa.h.
	(arm-isa.h): Add rule to generate file.
	* common/config/arm/arm-common.c: (arm_canon_arch_option): Use lower
	case for feature bit names.

From-SVN: r253097

gcc/cp/ChangeLog:
	* call.c (get_fndecl_argument_location): New function.
	(convert_like_real): Use it  when complaining about argument type
	mismatches.
	* cp-tree.h (struct cp_parameter_declarator): Add "loc" field.
	* parser.c (make_parameter_declarator): Add "loc" param and use
	it to initialize the new field.
	(cp_parser_translation_unit): Add UNKNOWN_LOCATION for "loc" of
	the "no_parameters" parameter.
	(cp_parser_parameter_declaration_list): Set the location of the
	result of grokdeclarator to be the parameter's loc, assuming no
	errors.
	(cp_parser_parameter_declaration): Generate a location for the
	parameter and pass to make_parameter_declarator.

gcc/testsuite/ChangeLog:
	* g++.dg/diagnostic/param-type-mismatch.C: Update expected results
	to reflect highlighting of parameters; add test coverage for
	callback parameters.

From-SVN: r253096

	PR sanitizer/77631
	* configure.ac: Check for lstat and readlink.
	* elf.c (lstat, readlink): Provide dummy versions if real versions
	are not available.
	* configure, config.h.in: Rebuild.

From-SVN: r253095

2017-09-22  Richard Biener  <rguenther@suse.de>

	* graphite-isl-ast-to-gimple.c (graphite_verify): Inline into
	single caller.
	(graphite_regenerate_ast_isl): Do not reset SCEV.  Move debug
	print of no dependency loops ...
	* graphite.c (graphite_transform_loops): ... here.
	(canonicalize_loop_closed_ssa_form): Work from inner to outer
	loops.
	(same_close_phi_node, remove_duplicate_close_phi,
	make_close_phi_nodes_unique, defined_in_loop_p): Fold into ...
	(canonicalize_loop_closed_ssa): ... here and simplify.
	* graphite-optimize-isl.c: Include tree-vectorizer.h.
	(optimize_isl): Use dump_printf_loc to tell when we stopped
	optimizing because of an ISL timeout.

	* gcc.dg/graphite/scop-24.c: New testcase.

From-SVN: r253094

2017-09-22  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82291
	* tree-if-conv.c (predicate_mem_writes): Make sure to
	remove writes in blocks predicated with false.

	* gcc.dg/torture/pr82291.c: New testcase.

From-SVN: r253093

2017-09-22  Richard Biener  <rguenther@suse.de>

	* sese.c: Include cfganal.h.
	(if_region_set_false_region): Remove.
	(create_if_region_on_edge): Likewise.
	(move_sese_in_condition): Re-implement without destroying
	dominators.

From-SVN: r253092

2017-09-22  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/52832
	* gfortran.dg/associate_31.f90 : Remove failing test.

From-SVN: r253091

graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes): Verify both BBs contain loop PHI nodes before dispatching to copy_loop_phi_args.

2017-09-21  Richard Biener  <rguenther@suse.de>

	* graphite-isl-ast-to-gimple.c (translate_pending_phi_nodes):
	Verify both BBs contain loop PHI nodes before dispatching to
	copy_loop_phi_args.
	(graphite_regenerate_ast_isl): Do not recompute dominators,
	do not verify three times.  Restructure for clarity.
	* graphite-scop-detection.c (same_close_phi_node,
	remove_duplicate_close_phi, make_close_phi_nodes_unique,
	defined_in_loop_p, canonicalize_loop_closed_ssa,
	canonicalize_loop_closed_ssa_form): Simplify, remove excess
	checking and SSA rewrite, move to ...
	* graphite.c: ... here.  Include ssa.h and tree-ssa-loop-manip.h.
	(graphite_initialize): Do not pass in ctx, do not reset the
	SCEV cache, compute only dominators.
	(graphite_transform_loops): Allocate ISL ctx after
	graphite_initialize.  Call canonicalize_loop_closed_ssa_form.
	Maintain post-dominators only around build_scops.
	* sese.c (if_region_set_false_region): Make static.  Free
	and recompute dominators.
	(move_sese_in_condition): Assert we don't get called with
	post-dominators computed.
	* sese.h (if_region_set_false_region): Remove.

From-SVN: r253090

/gcc
        * config/i386/sse.md ("mov<mode>_internal"): Use <sseinsnmode>
	mode attribute for TARGET_AVX512VL.

	* config/i386/i386.opt (mprefer-avx256): New option.
	* config/i386/i386.c (ix86_target_string): Add -mprefer-avx256
	to flag_opts.
	(ix86_preferred_simd_mode): Return 256-bit AVX modes
	for TARGET_PREFER_AVX256.
	* doc/invoke.texi (x86 Options): Document -mprefer-avx256.

/testsuite

        * gcc.target/i386/avx512f-constant-set.c: New test.

	* g++.dg/ext/pr57362.C: Test __attribute__((target("prefer-avx256"))).
	* gcc.target/i386/avx512f-prefer.c: New test.

From-SVN: r253089

From-SVN: r253088

2017-09-13  Michael Meissner  <meissner@linux.vnet.ibm.com>

	* gcc.target/powerpc/float128-fma1.c: New test.
	* gcc.target/powerpc/float128-fma2.c: Likewise.
	* gcc.target/powerpc/float128-sqrt1.c: Likewise.
	* gcc.target/powerpc/float128-sqrt2.c: Likewise.

From-SVN: r253083

i386.c (ix86_adjust_stack_and_probe_stack_clash): Fix dump output if the only stack space is for pushed registers.

	* config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash):
	Fix dump output if the only stack space is for pushed registers.

	* lib/target-supports.exp
	(check_effective_target_frame_pointer_for_non_leaf): Add
	case for x86 Solaris.

From-SVN: r253082

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* config/spu/spu.c (spu_sched_adjust_cost): Update after renaming
	of insn_cost.

From-SVN: r253080

	PR go/82284
	* elf.c (backtrace_initialize): Set pd.exe_filename.

From-SVN: r253078

2017-09-21  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/52832
	* match.c (gfc_match_associate): Before failing the association
	try again, allowing a proc pointer selector.

	PR fortran/80120
	PR fortran/81903
	PR fortran/82121
	* primary.c (gfc_match_varspec): Introduce 'tgt_expr', which
	points to the associate selector, if any. Go through selector
	references, after resolution for variables, to catch any full
	or section array references. If a class associate name does
	not have the same declared type as the selector, resolve the
	selector and copy the declared type to the associate name.
	Before throwing a no implicit type error, resolve all allowed
	selector expressions, and copy the resulting typespec.

	PR fortran/67543
	* resolve.c (resolve_assoc_var): Selector must cannot be the
	NULL expression and it must have a type.

	PR fortran/78152
	* resolve.c (resolve_symbol): Allow associate names to be
	coarrays.

2017-09-21  Paul Thomas  <pault@gcc.gnu.org>

	PR fortran/78512
	* gfortran.dg/associate_26.f90 : New test.

	PR fortran/80120
	* gfortran.dg/associate_27.f90 : New test.

	PR fortran/81903
	* gfortran.dg/associate_28.f90 : New test.

	PR fortran/82121
	* gfortran.dg/associate_29.f90 : New test.

	PR fortran/67543
	* gfortran.dg/associate_30.f90 : New test.

	PR fortran/52832
	* gfortran.dg/associate_31.f90 : New test.

From-SVN: r253077

gcc/ChangeLog:

	PR c/81882
	* doc/extend.texi (attribute ifunc): Avoid relying on ill-formed
	code (in C++) or code that triggers warnings.

From-SVN: r253076

https://gcc.gnu.org/ml/gcc-patches/2017-09/msg01482.html
	PR demangler/82195
	* cp-demangle.c (d_name): Revert addition of 'toplevel' parm.
	(has_return_type): Recurse for DEMANGLE_COMPONENT_LOCAL_NAME.
	(d_encoding): Revert d_name change.  Use is_fnqual_component_type
	to strip modifiers that do not belong.
	(d_special_name, d_class_enum_type): Revert d_name call change.
	(d_expresion_1): Commonize DEMANGLE_COMPONENT_UNARY building.
	(d_local_name): Revert parsing of a function type.
	(d_print_comp_inner): An inner LOCAL_NAME might contain a
	TEMPLATE.
	* testsuite/demangle-expected: Add & adjust tests

From-SVN: r253075

From-SVN: r253074

2017-09-21  Tamar Christina  <tamar.christina@arm.com>

	PR testsuite/78421
	* lib/target-supports.exp (check_effective_target_vect_hw_misalign):
	Invert arm check.

From-SVN: r253073

haifa-sched exports an insn_cost function, but it is only used in a
few places and specialised to scheduling.  This patch renames it to
insn_sched_cost.


	* haifa-sched.c: Rename insn_cost to insn_sched_cost.
	* sched-rgn.c: Ditto.
	* sel-sched-ir.c: Ditto.

From-SVN: r253072

	gcc/fortran/
	* openmp.c (gfc_match_oacc_wait): Don't restrict wait directive
	arguments to constant integers.

	gcc/testsuite/
	* gfortran.dg/goacc/wait.f90: New test.

From-SVN: r253071

	* toplev.h (set_random_seed): Adjust return type.
	* toplev.c (init_local_tick): Move eager initialization of random_seed
	to get_random_seed.  Adjust comment.
	(init_random_seed): Inline to get_random_seed, delete.
	(get_random_seed): Initialize random_seed lazily.
	(set_random_seed): Do not return previous value.
	(print_switch_value): Do not call get_random_seed.

From-SVN: r253069

2017-09-21  Evgeny Kudryashov <kudryashov@ispras.ru>

	* cgraph.c (delete_function_version): New, broken out from...
	(cgraph_node::delete_function_version): ...here.  Rename to
	cgraph_node::delete_function_version_by_decl.  Update all uses.
	(cgraph_node::remove): Call delete_function_version.

From-SVN: r253066

	PR sanitizer/81715
	* tree-inline.c (expand_call_inline): Emit clobber stmts for
	VAR_DECLs to which addressable non-volatile parameters are mapped
	and for id->retvar after the return value assignment.  Clear
	id->retval and id->retbnd after inlining.

	* g++.dg/tree-ssa/pr8781.C (noop): Change argument type from
	const predicate to const predicate & to avoid UB.
	* g++.dg/opt/pr81715.C: New test.

From-SVN: r253065

re PR tree-optimization/82276 (-O2: ICE: SSA corruption during RTL pass: expand; at tree-ssa-coalesce.c:1010)

2017-09-21  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82276
	PR tree-optimization/82244
	* tree-vrp.c (build_assert_expr_for): Set
	SSA_NAME_OCCURS_IN_ABNORMAL_PHI if the variable we assert on
	has it set.
	(remove_range_assertions): Revert earlier change.

	* gcc.dg/torture/pr82276.c: New testcase.

From-SVN: r253062

As described in PR71951, if libgcc is built with -fomit-frame-pointer,
unwinding crashes, for example while doing a backtrace.  The underlying
reason is the Dwarf unwinder does not setup the frame pointer register
in the initialization code.  When later unwinding a function that uses
the frame pointer, it tries to read FP using _Unwind_GetGR, and this
crashes if has never restored FP.  To unwind correctly the first frame
must save and restore FP (it is unwound in a special way so that it
uses SP instead of FP).  This is done by adding -fno-omit-frame-pointer.

    gcc/
	PR target/71951
	* config/aarch64/aarch64.h (LIBGCC2_UNWIND_ATTRIBUTE): Define.

From-SVN: r253061

graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl): Restore valid IL after code generation errors.

2017-09-21  Richard Biener  <rguenther@suse.de>

	* graphite-isl-ast-to-gimple.c (graphite_regenerate_ast_isl):
	Restore valid IL after code generation errors.
	* graphite.c (graphite_transform_loops): Diagnose code
	generation issues as MSG_MISSED_OPTIMIZATION and continue
	with processing SCOPs.

From-SVN: r253060

This patch replaces various places that previously used:

  if (GET_CODE (y) == CONST_INT)
    ... plus_constant (..., x, [-]INTVAL (y)) ...
  else
    ... gen_rtx_PLUS/MINUS (..., x, y) ...

with single calls to simplify_gen_binary.  This allows
them to handle polynomial integers as well as constants.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* calls.c (compute_argument_addresses): Use simplify_gen_binary
	rather than choosing between plus_constant and gen_rtx_<CODE>.
	* expr.c (emit_push_insn): Likewise.
	(expand_expr_real_2): Likewise.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253059

This is needed if the step is an unshared constant, like many
(const ...)s are.  Without this patch, libgfortran would fail
to build for SVE.

2017-09-21  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* loop-unroll.c (split_iv): Call copy_rtx on the step.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253058

This patch uses tree_fits_uhwi_p to protect a previously unguarded
use of tree_to_uhwi.  Previously we would ICE for variable-sized types.

2017-09-20  Richard Sandiford  <richard.sandiford@linaro.org>
	    Alan Hayward  <alan.hayward@arm.com>
	    David Sherwood  <david.sherwood@arm.com>

gcc/
	* tree.c (find_atomic_core_type): Check tree_fits_uhwi_p before
	calling tree_to_uhwi.

Co-Authored-By: Alan Hayward <alan.hayward@arm.com>
Co-Authored-By: David Sherwood <david.sherwood@arm.com>

From-SVN: r253057