PR middle-end/81695
	* fold-const.c (fold_indirect_ref_1): For ((int *)&a + 4 -> a[1],
	perform the computation in offset_int.

	* gcc.dg/pr81695.c: New test.

From-SVN: r250871

This patch is a follow-on to the fix for PR81136.  The testcase for that
PR shows that we can (correctly) calculate different base alignments
for two data_references but still tell that their misalignments wrt the
vector size are equal.  This is because we calculate the base alignments
for each dr individually, without looking at the other drs, and in
general the alignment we calculate is only guaranteed if the dr's DR_REF
actually occurs.

This is working as designed, but it does expose a missed opportunity.
We know that if a vectorised loop is reached, all statements in that
loop execute at least once, so it should be safe to pool the alignment
information for all the statements we're vectorising.  The only catch is
that DR_REFs for masked loads and stores only occur if the mask value is
nonzero.  For example, in:

    struct s __attribute__((aligned(32))) {
      int misaligner;
      int array[N];
    };

    int *ptr;
    for (int i = 0; i < n; ++i)
      ptr[i] = c[i] ? ((struct s *) (ptr - 1))->array[i] : 0;

we can only guarantee that ptr points to a "struct s" if at least
one c[i] is true.

This patch adds a DR_IS_CONDITIONAL_IN_STMT flag to record whether
the DR_REF is guaranteed to occur every time that the statement
executes to completion.  It then pools the alignment information
for references that aren't conditional in this sense.

2017-08-04  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/81136
	* tree-vectorizer.h: Include tree-hash-traits.h.
	(vec_base_alignments): New typedef.
	(vec_info): Add a base_alignments field.
	(vect_record_base_alignments): Declare.
	* tree-data-ref.h (data_reference): Add an is_conditional_in_stmt
	field.
	(DR_IS_CONDITIONAL_IN_STMT): New macro.
	(create_data_ref): Add an is_conditional_in_stmt argument.
	* tree-data-ref.c (create_data_ref): Likewise.  Use it to initialize
	the is_conditional_in_stmt field.
	(data_ref_loc): Add an is_conditional_in_stmt field.
	(get_references_in_stmt): Set the is_conditional_in_stmt field.
	(find_data_references_in_stmt): Update call to create_data_ref.
	(graphite_find_data_references_in_stmt): Likewise.
	* tree-ssa-loop-prefetch.c (determine_loop_nest_reuse): Likewise.
	* tree-vect-data-refs.c (vect_analyze_data_refs): Likewise.
	(vect_record_base_alignment): New function.
	(vect_record_base_alignments): Likewise.
	(vect_compute_data_ref_alignment): Adjust base_addr and aligned_to
	for nested statements even if we fail to compute a misalignment.
	Use pooled base alignments for unconditional references.
	(vect_find_same_alignment_drs): Compare base addresses instead
	of base objects.
	(vect_analyze_data_refs_alignment): Call vect_record_base_alignments.
	* tree-vect-slp.c (vect_slp_analyze_bb_1): Likewise.

gcc/testsuite/
	PR tree-optimization/81136
	* gcc.dg/vect/pr81136.c: Add scan test.

From-SVN: r250870

This patch uses new, delete, constructors and desctructors to manage
vec_info.  This includes making ~vec_info free all the data shared
by bb_vec_info and loop_vec_info, whereas previously the code was
duplicated in destroy_bb_vec_info and destroy_loop_vec_info.  This
in turn meant changing the order of:

  FOR_EACH_VEC_ELT (slp_instances, i, instance)
    vect_free_slp_instance (instance);

and:

  gimple_set_uid (stmt, -1);

in destroy_bb_vec_info/~_bb_vec_info, so that now vect_free_slp_instance
could see a uid of -1 as well as 0.  The patch updates vinfo_for_stmt
so that it returns NULL for a uid of -1.

2017-08-04  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-vectorizer.h (vec_info): Add a constructor and destructor.
	Add an explicit name for the enum.  Use auto_vec for slp_instances
	and grouped_stores.
	(_loop_vec_info): Add a constructor and destructor.  Use auto_vec
	for all vectors.
	(_bb_vec_info): Add a constructor and destructor.
	(vinfo_for_stmt): Return NULL for uids of -1 as well.
	(destroy_loop_vec_info): Delete.
	(vect_destroy_datarefs): Likewise.
	* tree-vectorizer.c (vect_destroy_datarefs): Delete.
	(vec_info::vec_info): New function.
	(vec_info::~vec_info): Likewise.
	(vectorize_loops): Use delete instead of destroy_loop_vec_info.
	* tree-parloops.c (gather_scalar_reductions): Use delete instead of
	destroy_loop_vec_info.
	* tree-vect-loop.c (new_loop_vec_info): Replace with...
	(_loop_vec_info::_loop_vec_info): ...this.
	(destroy_loop_vec_info): Replace with...
	(_loop_vec_info::~_loop_vec_info): ...this.  Unconditionally delete
	the stmt_vec_infos.  Leave handling of vec_info information to its
	destructor.  Remove explicit vector releases.
	(vect_analyze_loop_form): Use new instead of new_loop_vec_info.
	(vect_analyze_loop): Use delete instead of destroy_loop_vec_info.
	* tree-vect-slp.c (new_bb_vec_info): Replace with...
	(_bb_vec_info::_bb_vec_info): ...this.  Don't reserve space in
	BB_VINFO_GROUPED_STORES or BB_VINFO_SLP_INSTANCES.
	(destroy_bb_vec_info): Replace with...
	(_bb_vec_info::~_bb_vec_info): ...this.  Leave handling of vec_info
	information to its destructor.
	(vect_slp_analyze_bb_1): Use new and delete instead of
	new_bb_vec_info and destroy_bb_vec_info.
	(vect_slp_bb): Replace 2 calls to destroy_bb_vec_info with a
	single delete.

From-SVN: r250869

This patch checks whether two data references x and y cannot
partially overlap and so are independent whenever &x != &y.
We can then use this in the vectoriser to optimise alias checks.

gcc/
2016-08-04  Richard Sandiford  <richard.sandiford@linaro.org>

	* hash-traits.h (pair_hash): New struct.
	* tree-data-ref.h (data_dependence_relation): Add object_a and
	object_b fields.
	(DDR_OBJECT_A, DDR_OBJECT_B): New macros.
	* tree-data-ref.c (initialize_data_dependence_relation): Initialize
	DDR_OBJECT_A and DDR_OBJECT_B.
	* tree-vectorizer.h (vec_object_pair): New type.
	(_loop_vec_info): Add a check_unequal_addrs field.
	(LOOP_VINFO_CHECK_UNEQUAL_ADDRS): New macro.
	(LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Return true if there is an
	entry in check_unequal_addrs.  Check comp_alias_ddrs instead of
	may_alias_ddrs.
	* tree-vect-loop.c (destroy_loop_vec_info): Release
	LOOP_VINFO_CHECK_UNEQUAL_ADDRS.
	(vect_analyze_loop_2): Likewise, when restarting.
	(vect_estimate_min_profitable_iters): Estimate the cost of
	LOOP_VINFO_CHECK_UNEQUAL_ADDRS.
	* tree-vect-data-refs.c: Include tree-hash-traits.h.
	(vect_prune_runtime_alias_test_list): Try to handle conflicts
	using LOOP_VINFO_CHECK_UNEQUAL_ADDRS, if the data dependence allows.
	Count such tests in the final summary.
	* tree-vect-loop-manip.c (chain_cond_expr): New function.
	(vect_create_cond_for_align_checks): Use it.
	(vect_create_cond_for_unequal_addrs): New function.
	(vect_loop_versioning): Call it.

gcc/testsuite/
	* gcc.dg/vect/vect-alias-check-6.c: New test.

From-SVN: r250868

This patch tries to calculate conservatively-correct distance
vectors for two references whose base addresses are not the same.
It sets a new flag DDR_COULD_BE_INDEPENDENT_P if the dependence
isn't guaranteed to occur.

The motivating example is:

  struct s { int x[8]; };
  void
  f (struct s *a, struct s *b)
  {
    for (int i = 0; i < 8; ++i)
      a->x[i] += b->x[i];
  }

in which the "a" and "b" accesses are either independent or have a
dependence distance of 0 (assuming -fstrict-aliasing).  Neither case
prevents vectorisation, so we can vectorise without an alias check.

I'd originally wanted to do the same thing for arrays as well, e.g.:

  void
  f (int a[][8], struct b[][8])
  {
    for (int i = 0; i < 8; ++i)
      a[0][i] += b[0][i];
  }

I think this is valid because C11 6.7.6.2/6 says:

  For two array types to be compatible, both shall have compatible
  element types, and if both size specifiers are present, and are
  integer constant expressions, then both size specifiers shall have
  the same constant value.

So if we access an array through an int (*)[8], it must have type X[8]
or X[], where X is compatible with int.  It doesn't seem possible in
either case for "a[0]" and "b[0]" to overlap when "a != b".

However, as the comment above "if (same_base_p)" explains, GCC is more
forgiving: it supports arbitrary overlap of arrays and allows arrays to
be accessed with different dimensionality.  There are examples of this
in PR50067.  The patch therefore only handles references that end in a
structure field access.

There are two ways of handling these dependences in the vectoriser:
use them to limit VF, or check at runtime as before.  I've gone for
the approach of checking at runtime if we can, to avoid limiting VF
unnecessarily, but falling back to a VF cap when runtime checks aren't
allowed.

The patch tests whether we queued an alias check with a dependence
distance of X and then picked a VF <= X, in which case it's safe to
drop the alias check.  Since vect_prune_runtime_alias_check_list
can be called twice with different VF for the same loop, it's no
longer safe to clear may_alias_ddrs on exit.  Instead we should use
comp_alias_ddrs to check whether versioning is necessary.

2017-08-04  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	* tree-data-ref.h (subscript): Add access_fn field.
	(data_dependence_relation): Add could_be_independent_p.
	(SUB_ACCESS_FN, DDR_COULD_BE_INDEPENDENT_P): New macros.
	(same_access_functions): Move to tree-data-ref.c.
	* tree-data-ref.c (ref_contains_union_access_p): New function.
	(access_fn_component_p): Likewise.
	(access_fn_components_comparable_p): Likewise.
	(dr_analyze_indices): Add a reference to access_fn_component_p.
	(dump_data_dependence_relation): Use SUB_ACCESS_FN instead of
	DR_ACCESS_FN.
	(constant_access_functions): Likewise.
	(add_other_self_distances): Likewise.
	(same_access_functions): Likewise.  (Moved from tree-data-ref.h.)
	(initialize_data_dependence_relation): Use XCNEW and remove
	explicit zeroing of DDR_REVERSED_P.  Look for a subsequence
	of access functions that have the same type.  Allow the
	subsequence to end with different bases in some circumstances.
	Record the chosen access functions in SUB_ACCESS_FN.
	(build_classic_dist_vector_1): Replace ddr_a and ddr_b with
	a_index and b_index.  Use SUB_ACCESS_FN instead of DR_ACCESS_FN.
	(subscript_dependence_tester_1): Likewise dra and drb.
	(build_classic_dist_vector): Update calls accordingly.
	(subscript_dependence_tester): Likewise.
	* tree-ssa-loop-prefetch.c (determine_loop_nest_reuse): Check
	DDR_COULD_BE_INDEPENDENT_P.
	* tree-vectorizer.h (LOOP_REQUIRES_VERSIONING_FOR_ALIAS): Test
	comp_alias_ddrs instead of may_alias_ddrs.
	* tree-vect-data-refs.c (vect_analyze_possibly_independent_ddr):
	New function.
	(vect_analyze_data_ref_dependence): Use it if
	DDR_COULD_BE_INDEPENDENT_P, but fall back to using the recorded
	distance vectors if that fails.
	(dependence_distance_ge_vf): New function.
	(vect_prune_runtime_alias_test_list): Use it.  Don't clear
	LOOP_VINFO_MAY_ALIAS_DDRS.

gcc/testsuite/
	* gcc.dg/vect/vect-alias-check-3.c: New test.
	* gcc.dg/vect/vect-alias-check-4.c: Likewise.
	* gcc.dg/vect/vect-alias-check-5.c: Likewise.

From-SVN: r250867

2017-08-04  Richard Biener  <rguenther@suse.de>

	PR middle-end/81705
	* fold-const.c (fold_binary_loc): Properly restrict
	minus_var0 && minus_var1 case when associating undefined overflow
	entities.

	* c-c++-common/ubsan/pr81705.c: New testcase.

From-SVN: r250866

Currently we generate an if with probability set on only one of the two edges:
  <bb 5> [0.00%] [count: INV]:
  _5 = mask.3[iter.6_3];
  if (_5 == 0)
    goto <bb 6>; [INV] [count: INV]
  else
    goto <bb 2>; [100.00%] [count: INV]

Add the missing edge probability, and set the split to unlikely/likely:
  if (_5 == 0)
    goto <bb 6>; [19.99%] [count: INV]
  else
    goto <bb 2>; [80.01%] [count: INV]

2017-08-04  Tom de Vries  <tom@codesourcery.com>

	* omp-simd-clone.c (simd_clone_adjust): Add missing edge probability.

From-SVN: r250865

From-SVN: r250864

rs6000-c.c (altivec_resolve_overloaded_builtin): Don't start diagnostic messages with a capital letter.

[gcc]

2017-08-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
	Don't start diagnostic messages with a capital letter.
	* config/rs6000/rs6000.c (rs6000_option_override_internal):
	Likewise.
	(rs6000_invalid_builtin): Likewise.
	(rs6000_trampoline_init): Likewise.

[gcc/testsuite]

2017-08-03  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	* gcc.target/powerpc/bfp/scalar-cmp-exp-eq-2.c: Adjust for error
	messages that used to start with a capital letter.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-gt-2.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-cmp-exp-lt-2.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-cmp-unordered-2.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-extract-exp-1.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-extract-exp-4.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-extract-sig-1.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-extract-sig-4.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-insert-exp-1.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-insert-exp-10.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-insert-exp-4.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-insert-exp-7.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-data-class-11.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-data-class-6.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-data-class-7.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-neg-2.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-neg-3.c: Likewise.
	* gcc.target/powerpc/bfp/scalar-test-neg-5.c: Likewise.
	* gcc.target/powerpc/bfp/vec-extract-exp-2.c: Likewise.
	* gcc.target/powerpc/bfp/vec-extract-exp-3.c: Likewise.
	* gcc.target/powerpc/bfp/vec-extract-sig-2.c: Likewise.
	* gcc.target/powerpc/bfp/vec-extract-sig-3.c: Likewise.
	* gcc.target/powerpc/bfp/vec-insert-exp-2.c: Likewise.
	* gcc.target/powerpc/bfp/vec-insert-exp-3.c: Likewise.
	* gcc.target/powerpc/bfp/vec-insert-exp-6.c: Likewise.
	* gcc.target/powerpc/bfp/vec-insert-exp-7.c: Likewise.
	* gcc.target/powerpc/bfp/vec-test-data-class-2.c: Likewise.
	* gcc.target/powerpc/bfp/vec-test-data-class-3.c: Likewise.
	* gcc.target/powerpc/byte-in-either-range-1.c: Likewise.
	* gcc.target/powerpc/byte-in-range-1.c: Likewise.
	* gcc.target/powerpc/byte-in-set-1.c: Likewise.
	* gcc.target/powerpc/crypto-builtin-2.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-1.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-11.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-16.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-21.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-26.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-31.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-36.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-41.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-46.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-51.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-56.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-6.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-61.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-66.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-71.c: Likewise.
	* gcc.target/powerpc/dfp/dtstsfi-76.c: Likewise.
	* gcc.target/powerpc/vsu/vec-all-nez-7.c: Likewise.
	* gcc.target/powerpc/vsu/vec-any-eqz-7.c: Likewise.
	* gcc.target/powerpc/vsu/vec-cmpnez-7.c: Likewise.
	* gcc.target/powerpc/vsu/vec-cntlz-lsbb-2.c: Likewise.
	* gcc.target/powerpc/vsu/vec-cnttz-lsbb-2.c: Likewise.
	* gcc.target/powerpc/vsu/vec-xl-len-12.c: Likewise.
	* gcc.target/powerpc/vsu/vec-xlx-7.c: Likewise.
	* gcc.target/powerpc/vsu/vec-xrx-7.c: Likewise.
	* gcc.target/powerpc/vsu/vec-xst-len-12.c: Likewise.

From-SVN: r250860

	PR go/81617
    libgo: change mksigtab to recognize glibc 2.26 NSIG expression
    
    Fixes golang/go#21147
    Fixes GCC PR 81617
    
    Reviewed-on: https://go-review.googlesource.com/52611

From-SVN: r250858

	PR target/81621
	* bb-reorder.c (pass_partition_blocks::execute): Return TODO_df_finish
	after setting changeable df flags.

	* gcc.dg/pr81621.c: New test.

From-SVN: r250857

lto-symtab.h (lto_symtab_prevail_decl): Do not use DECL_ABSTRACT_ORIGIN as flag we can end up using that.

2017-08-03  Richard Biener  <rguenther@suse.de>

	* lto-symtab.h (lto_symtab_prevail_decl): Do not use
	DECL_ABSTRACT_ORIGIN as flag we can end up using that.  Instead
	use DECL_LANG_FLAG_0.
	(lto_symtab_prevail_decl): Likewise.

From-SVN: r250856

2017-08-03  Richard Biener  <rguenther@suse.de>

	* tree-ssa-reassoc.c (should_break_up_subtract): Also break
	up if the use is in USE - X.

	* gcc.dg/tree-ssa/reassoc-23.c: Adjust to fool early folding
	and CSE.

From-SVN: r250855

	* toplev.c (dumpfile.h): New include.
	(internal_error_reentered): New static function.  Use it...
	(internal_error_function): ...here to handle reentered internal_error.

From-SVN: r250854

2017-08-03 Richard Biener  <rguenther@suse.de>

	PR middle-end/81148
	* fold-const.c (split_tree): Add minus_var and minus_con
	arguments, remove unused loc arg.  Never generate NEGATE_EXPRs
	here but always use minus_*.
	(associate_trees): Assert we never associate with MINUS_EXPR
	and NULL first operand.  Do not recurse for PLUS_EXPR operands
	when associating as MINUS_EXPR either.
	(fold_binary_loc): Track minus_var and minus_con.

	* c-c++-common/ubsan/pr81148.c: New testcase.

From-SVN: r250853

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	PR lto/81430
	* tree-streamer-in.c (lto_input_ts_function_decl_tree_pointers): If
	ACCEL_COMPILER, apply finish_options on
	DECL_FUNCTION_SPECIFIC_OPTIMIZATION.

From-SVN: r250852

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	PR target/81662
	* config/nvptx/nvptx.c (nvptx_option_override): Emit sorry if
	function_entry_patch_area_size > 0.

	* gcc.target/nvptx/patchable_function_entry-default.c: New test.

From-SVN: r250851

	PR driver/81650
	* calls.c (alloc_max_size): Use HOST_WIDE_INT_UC (10??)
	instead of 10??LU, perform unit multiplication in wide_int,
	don't change alloc_object_size_limit if the limit is larger
	than SSIZE_MAX.

	* gcc.dg/pr81650.c: New test.

From-SVN: r250850

	PR tree-optimization/81655
	PR tree-optimization/81588
	* tree-ssa-reassoc.c (optimize_range_tests_var_bound): Handle also
	the case when ranges[i].low and high are 1 for unsigned type with
	precision 1.

From-SVN: r250849

/cp
2017-08-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71440
	* typeck.c (build_x_unary_op): Avoid pretty-printing constructor /
	destructor as expressions.

/testsuite
2017-08-03  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/71440
	* g++.dg/template/crash127.C: New.

From-SVN: r250848

	PR middle-end/81052
	* omp-low.c (diagnose_sb_0): Handle flag_openmp_simd like flag_openmp.
	(pass_diagnose_omp_blocks::gate): Enable also for flag_openmp_simd.

	* c-c++-common/pr81052.c: New test.

From-SVN: r250847

2017-08-03  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* tree-vrp.h: Add include guard.

From-SVN: r250846

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/pr56727-2.c: Require alias.

From-SVN: r250845

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/attr-noipa.c: Require alloca.

From-SVN: r250844

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/torture/pr80163.c: Require label_values.

From-SVN: r250843

2017-08-03  Tom de Vries  <tom@codesourcery.com>

	PR target/81662
	* c-c++-common/patchable_function_entry-decl.c: Skip for nvptx.
	* c-c++-common/patchable_function_entry-default.c: Same.
	* c-c++-common/patchable_function_entry-definition.c: Same.

From-SVN: r250842

From-SVN: r250841

From-SVN: r250836

From-SVN: r250835

    
    When finalizing the methods of a named struct type, we used to
    finalize all the field types first.  That can fail if the field types
    refer indirectly to the named type.  Change it to just finalize the
    embedded field types first, and the rest of the fields later.
    
    Fixes golang/go#21253
    
    Reviewed-on: https://go-review.googlesource.com/52570

From-SVN: r250832

From-SVN: r250831

re PR target/81644 (ICE in rtl_verify_bb_insn, BBRO pass duplicates BB that ends with flow control insn)

	PR target/81644
	* config/i386/i386.md (unspecv): Add UNSPECV_UD2.
	(ud2): New insn pattern.
	* config/i386/i386.c (ix86_expand_epilogue):
	Generate ud2 instead of trap insn.

testsuite/ChangeLog:

	PR target/81644
	* gcc.target/i386/pr81644.c: New test.

From-SVN: r250830

	PR other/81667
	* alloc-pool.h (base_pool_allocator): Initialize m_elt_size.

From-SVN: r250829

2017-08-02  Tom de Vries  <tom@codesourcery.com>

	* gcc.dg/Walloca-14.c: Use relative line number.

From-SVN: r250828

	* gcc.target/i386/funcspec-56.inc (no_3dnowa): Properly
	test "no-3dnowa" target attribute.

From-SVN: r250826

From-SVN: r250825

From-SVN: r250824

2017-08-02  Tom de Vries  <tom@codesourcery.com>
	    Cesar Philippidis  <cesar@codesourcery.com>

	* config/nvptx/nvptx.c (nvptx_lockless_update, nvptx_lockfull_update):
	Add missing edge probabilities.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r250823

	PR c/81448
	PR c/81306
	* c-warn.c (warn_for_multistatement_macros): Prevent bogus
	warnings.  Avoid walking MACRO_MAP_LOCATIONS.						     

	* c-c++-common/Wmultistatement-macros-13.c: New test.

From-SVN: r250822

	PR c/81289
	* c-parser.c (c_parser_unary_expression): Use set_error.

	* gcc.dg/noncompile/pr81289.c: New test.

From-SVN: r250821