Pool alignment information for common bases

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

C++-ify vec_info structures

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

Use base inequality for some vector alias checks

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

Handle data dependence relations with different bases

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

re PR middle-end/81705 (UBSAN: yet another false positive)

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

Add missing edge probability in simd_clone_adjust

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

Daily bump.

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

re PR go/81617 (mksigtab.sh fails to resolve NSIG with glibc 2.26)

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

re PR target/81621 (ICE in delete_insn, at cfgrtl.c:167 with s390x cross compiler)

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

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

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: avoid recursive emergency_dump_function

* 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

re PR sanitizer/81148 (UBSAN: two more false positives)

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

Apply finish_options on DECL_FUNCTION_SPECIFIC_OPTIMIZATION for ACCEL_COMPILER

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

Error out on nvptx for fpatchable-function-entry

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

re PR driver/81650 (gcc -m32 mishandles -Walloc-size-larger-than=9223372036854775807)

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

re PR tree-optimization/81655 (new test case gcc.dg/tree-ssa/pr81588.c fails on powerpc64)

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

re PR c++/71440 (ICE on invalid C++ code in instantiate_type, at cp/class.c:8247)

/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

re PR middle-end/81052 (ICE in verify_dominators, at dominance.c:1184)

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

tree-vrp.h: Add include guard.

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

* tree-vrp.h: Add include guard.

From-SVN: r250846

Require alias for gcc.dg/pr56727-2.c

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

* gcc.dg/pr56727-2.c: Require alias.

From-SVN: r250845

Require alloca for gcc.dg/attr-noipa.c

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

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

From-SVN: r250844

Require label_values for gcc.dg/torture/pr80163.c

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

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

From-SVN: r250843

Skip fpatchable-function-entry tests for nvptx

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

Daily bump.

From-SVN: r250841

Added Python implementation of mklog.

From-SVN: r250836

Renamed original mklog to mklog.pl.

From-SVN: r250835

compiler: only finalize embedded fields before finalizing methods

    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

* ChangeLog: Fix my last entry.

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

re PR other/81667 (trunk/gcc/alloc-pool.h:239: possible missing initialiser ?)

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

From-SVN: r250829

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

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

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

From-SVN: r250828

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

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

From-SVN: r250826

Add PR number.

From-SVN: r250825

* xcoff.c (xcoff_process_linenos): Initialize incl to NULL.

From-SVN: r250824

Add missing probabilities in nvptx_lock{less,full}_update

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

re PR c/81448 (False positive -Werror=multistatement-macros in openssl)

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

re PR c/81289 (ICE in libcpp/line-map.c)

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

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

From-SVN: r250821

pr25967-1.c: Delete

* gcc.dg/guality/pr25967-1.c: Delete
        * gcc.dg/guality/pr25967-2.c: Delete
        * gcc.dg/guality/pr25967-3.c: Rename to pr25967-1.c.
        * gcc.dg/guality/pr25967-4.c: Rename to pr25967-2.c.

        * gcc.dg/torture/pr25967-1.c: Delete
        * gcc.dg/torture/pr25967-2.c: Delete
        * gcc.dg/torture/pr25967-3.c: Rename to pr25967-1.c.
        * gcc.dg/torture/pr25967-4.c: Rename to pr25967-2.c.

From-SVN: r250820

aarch64.c (aarch64_reinterpret_float_as_int): Correct endianness.

2017-08-02  Tamar Christina  <tamar.christina@arm.com>

* config/aarch64/aarch64.c (aarch64_reinterpret_float_as_int):
Correct endianness.

From-SVN: r250818

re PR c++/81640 (ICE in lookup_fnfields_slot_nolazy w/ -Wshadow=compatible-local)

PR c++/81640
* call.c (build_user_type_conversion_1): Only call
lookup_fnfields_slot if totype is CLASS_TYPE_P.

* g++.dg/warn/Wshadow-compatible-local-2.C: New test.

From-SVN: r250816

re PR middle-end/79499 (ICE in rtl_verify_bb_insns, at cfgrtl.c:2661)

PR middle-end/79499
* function.c (thread_prologue_and_epilogue_insns): Determine blocks
for find_many_sub_basic_blocks bitmap by looking up BLOCK_FOR_INSN
of first NONDEBUG_INSN_P in each of the split_prologue_seq and
prologue_seq sequences - if any.

* gcc.dg/pr79499.c: New test.

From-SVN: r250814

tree-vect-stmts.c (vectorizable_store): Perform vector extracts via vectors if supported...

2017-08-02  Richard Biener  <rguenther@suse.de>

* tree-vect-stmts.c (vectorizable_store): Perform vector extracts
via vectors if supported, integer extracts via punning if supported
or otherwise vector extracts.

From-SVN: r250813

tree-ssa-pre.c (bitmap_insert_into_set_1): Remove and inline into ...

2017-08-02  Richard Biener  <rguenther@suse.de>

* tree-ssa-pre.c (bitmap_insert_into_set_1): Remove and inline
into ...
(bitmap_insert_into_set): ... this.

From-SVN: r250812

re PR tree-optimization/81633 (Incorrect floating point result with tree vectoriser)

2017-08-02  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81633
Revert
2015-08-17  Alan Hayward  <alan.hayward@arm.com>

PR tree-optimization/71752
* tree-vect-slp.c (vect_get_slp_defs): Handle null operands.

* gcc.dg/vect/pr81633.c: New testcase.

From-SVN: r250811

Daily bump.

From-SVN: r250810

* fr.po: Update.

From-SVN: r250805

[i386] Remove ix86_frame::outlined_save_offset and machine_function::call_ms2sysv_pad_out

ix86_frame::outlined_save_offset isn't used and
machine_function::call_ms2sysv_pad_out is an ineffective strategy.

2017-08-01  Daniel Santos  <daniel.santos@pobox.com>

        * config/i386/i386.h (ix86_frame::outlined_save_offset): Remove field.
        (machine_function::call_ms2sysv_pad_out): Remove field.
        * config/i386/i386.c (xlogue_layout::get_stack_space_used): Modify.
        (ix86_compute_frame_layout): Likewise.

From-SVN: r250803

c-ada-spec.c (has_static_fields): Look only into fields.

* c-ada-spec.c (has_static_fields): Look only into fields.
(dump_generic_ada_node): Small tweak.
(dump_nested_types): Look only into fields.
(print_ada_declaration): Look only into methods.  Small tweak.
(print_ada_struct_decl): Look only into fields.  Use DECL_VIRTUAL_P.

From-SVN: r250802

i386: Add more naked attribute tests

Add some tests for implementing interrupt handlers with naked attribute
and without asm statements.

* gcc.dg/guality/pr25967-3.c: New test.
* gcc.dg/guality/pr25967-4.c: Likewise.
* gcc.dg/torture/pr25967-3.c: Likewise.
* gcc.dg/torture/pr25967-4.c: Likewise.

From-SVN: r250800

i386: Add some naked attribute tests

Add some tests for implementing interrupt handlers with naked attribute.

* gcc.dg/guality/pr25967-1.c: New test.
* gcc.dg/guality/pr25967-2.c: Likewise.
* gcc.dg/torture/pr25967-1.c: Likewise.
* gcc.dg/torture/pr25967-2.c: Likewise.

From-SVN: r250799

c-ada-spec.c (print_generic_ada_decl): Pass correctly-typed constant.

* c-ada-spec.c (print_generic_ada_decl): Pass correctly-typed constant.
(dump_ada_function_declaration): Likewise.
(dump_generic_ada_node): Likewise.
(print_ada_declaration): Add support for const-qualified variables.

From-SVN: r250797

386: Disallow naked attribute with interrupt attribute

gcc/

PR target/81654
* config/i386/i386.c (ix86_set_func_type): Disallow naked
attribute with interrupt attribute.

gcc/testsuite/

PR target/81654
* gcc.target/i386/pr81654.c: New test.

From-SVN: r250793

re PR fortran/79312 (Empty array in assignment not correctly type-checked)

2017-08-01  Thomas König  <tkoenig@gcc.gnu.org>

PR fortran/79312
* intrisic.c (gfc_convert_type_warn):  Only set typespec for
empty array constructors which don't have it already.

2017-08-01  Thomas König  <tkoenig@gcc.gnu.org>

PR fortran/79312
* gfortran.dg/logical_assignment_1.f90:  New test.

From-SVN: r250792

re PR fortran/45435 (Automatically generate C interop interface blocks from C code)

2017-08-01  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/45435
* lang.opt (fc-prototypes): Add option.
* gfortran.h (gfc_typespec): Add interop_kind to struct.
(gfc_dump_c_prototypes): Add prototype.
* decl.c (gfc_match_kind_spec): Copy symbol used for kind to typespec.
* parse.c (gfc_parse_file): Call gfc_dump_prototypes.
* dump-parse-tree.c (gfc_dump_c_prototypes): New function.
(type_return): New enum.
(get_c_type_name): New function.
(write_decl): New function.
(write_type): New function.
(write_variable): New function.
(write_proc): New function.
(write_interop_decl): New function.
* invoke.texi: Document -fc-prototypes.

From-SVN: r250791

tree-ssa-scopedtables.c (hashable_expr_equal_p): Check BIT_INSERT_EXPR's operand 1 to see if the types precision matches.

2017-08-01  Andrew Pinski  <apinski@cavium.com>

        * tree-ssa-scopedtables.c (hashable_expr_equal_p): Check
        BIT_INSERT_EXPR's operand 1
        to see if the types precision matches.

From-SVN: r250790

Make mempcpy more optimal (PR middle-end/70140).

2017-08-01  Martin Liska  <mliska@suse.cz>

PR middle-end/70140
* gcc.dg/string-opt-1.c: Adjust test-case to scan for memcpy.
2017-08-01  Martin Liska  <mliska@suse.cz>

PR middle-end/70140
* builtins.c (expand_builtin_memcpy_args): Remove.
(expand_builtin_memcpy): Call newly added function
expand_builtin_memory_copy_args.
(expand_builtin_memcpy_with_bounds): Likewise.
(expand_builtin_mempcpy): Remove last argument.
(expand_builtin_mempcpy_with_bounds): Likewise.
(expand_builtin_memory_copy_args): New function created from
expand_builtin_mempcpy_args with small modifications.
(expand_builtin_mempcpy_args): Remove.
(expand_builtin_stpcpy): Remove unused argument.
(expand_builtin): Likewise.
(expand_builtin_with_bounds): Likewise.

From-SVN: r250789

Revert r250771

2017-08-01  Martin Liska  <mliska@suse.cz>

Revert r250771
Make mempcpy more optimal (PR middle-end/70140).
2017-08-01  Martin Liska  <mliska@suse.cz>

Revert r250771
Make mempcpy more optimal (PR middle-end/70140).

From-SVN: r250788

* decl.c (declare_global_var): Set DECL_CONTEXT.

From-SVN: r250786

re PR target/81622 (ICE on invalid altivec code with ppc64{,le})

PR target/81622
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin): For
__builtin_vec_cmpne verify both arguments are compatible vectors
before looking at TYPE_MODE on the element type.  For __builtin_vec_ld
verify arg1_type is a pointer or array type.  For __builtin_vec_st,
move computation of aligned to after checking the argument types.
Formatting fixes.

* gcc.target/powerpc/pr81622.c: New test.

From-SVN: r250785

re PR target/80846 (auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel)

PR target/80846
* config/rs6000/vsx.md (vextract_fp_from_shorth,
vextract_fp_from_shortl): Add element mode after mode in gen_vec_init*
calls.

From-SVN: r250784

re PR tree-optimization/80925 (vect peeling failures)

2017-08-01  Steve Ellcey  <sellcey@cavium.com>

PR tree-optimization/80925
* gcc.dg/vect/vect-28.c: Add
--param vect-max-peeling-for-alignment=0 option.
Remove unaligned access and peeling checks.
* gcc.dg/vect/vect-33-big-array.c: Ditto.
* gcc.dg/vect/vect-70.c: Ditto.
* gcc.dg/vect/vect-87.c: Ditto.
* gcc.dg/vect/vect-88.c: Ditto.
* gcc.dg/vect/vect-91.c: Ditto.
* gcc.dg/vect/vect-93.c: Ditto.

From-SVN: r250783

config.gcc (arm-wrs-vxworks*): Rework to handle arm-wrs-vxworks7 as well as arm-wrs-vxworks.

2017-08-01  Jerome Lambourg  <lambourg@adacore.com>
           Doug Rupp  <rupp@adacore.com>
           Olivier Hainque  <hainque@adacore.com>

   gcc/
    * config.gcc (arm-wrs-vxworks*): Rework to handle arm-wrs-vxworks7 as
    well as arm-wrs-vxworks. Update target_cpu_name from arm6 (arch v3) to
    arm8 (arch v4).
    * config/arm/vxworks.h (MAYBE_TARGET_BPABI_CPP_BUILTINS): New, helper
    for TARGET_OS_CPP_BUILTIN.
    (TARGET_OS_CPP_BUILTIN): Invoke MAYBE_TARGET_BPABI_CPP_BUILTINS(),
    refine CPU definitions for arm_arch5 and add those for arm_arch6 and
    arm_arch7.
     (MAYBE_ASM_ABI_SPEC): New, helper for SUBTARGET_EXTRA_ASM_SPEC,
    passing required abi options to the assembler for EABI configurations.
    (EXTRA_CC1_SPEC): New macro, to help prevent the implicit production
    of .text.hot and .text.unlikely sections for kernel modules when
    using ARM style exceptions.
    (CC1_SPEC): Remove obsolete attempt at mimicking Diab toolchain
    options. Add EXTRA_CC1_SPEC.
    (VXWORKS_ENDIAN_SPEC): Adjust comment and remove handling of Diab
    toolchain options.
    (DWARF2_UNWIND_INFO): Redefine to handle the pre/post VxWorks 7
    transition.
    (ARM_TARGET2_DWARF_FORMAT): Define.
    * config/arm/t-vxworks: Adjust multilib control to removal of the
    Diab command line options.

    libgcc/
    * config.host (arm-wrs-vxworks*): Rework to handle arm-wrs-vxworks7
    as well as arm-wrs-vxworks.
    * config/arm/t-vxworks7: New file.  Add unwind-arm-vxworks.c to
    LIB2ADDEH.
    * config/arm/unwind-arm-vxworks.c: New file. Provide dummy
    __exidx_start and __exidx_end for downloadable modules.

Co-Authored-By: Doug Rupp <rupp@adacore.com>
Co-Authored-By: Olivier Hainque <hainque@adacore.com>
From-SVN: r250781

Fix segfault in gcov.c (PR gcov-profile/81561).

2017-08-01  Martin Liska  <mliska@suse.cz>

PR gcov-profile/81561
* gcov.c (unblock): Make unblocking safe as we need to preserve
index correspondence of blocks and block_lists.

From-SVN: r250780

Simplify nvptx/slp* test-cases

Use signed loop iteration variable in nvtpx/slp* test-cases to work around
PR tree-optimizaion/81635.

2017-08-01  Tom de Vries  <tom@codesourcery.com>

* gcc.target/nvptx/slp-2.c (foo): Use signed loop iteration variable.
* gcc.target/nvptx/slp.c (foo): Same.

From-SVN: r250778

re PR tree-optimization/81181 (ICE in compute_antic, at tree-ssa-pre.c:2410)

2017-08-01  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81181
* tree-ssa-pre.c (compute_antic_aux): Defer clean() to ...
(compute_antic): ... end of iteration here.

* gcc.dg/torture/pr81181.c: New testcase.

From-SVN: r250777

t-vxworks (LIBGCC2_INCLUDES): Start with -I.

2017-08-01  Olivier Hainque  <hainque@adacore.com>

* config/t-vxworks (LIBGCC2_INCLUDES): Start with -I. after -nostdinc.
* config/t-vxworks7: Likewise.

From-SVN: r250776

t-vxworks: Instead of redefining LIB2ADD, augment LIB2ADDEH with vxlib.c and vxlib-tls.c.

2017-08-01  Olivier Hainque  <hainque@adacore.com>

* config/t-vxworks: Instead of redefining LIB2ADD,
augment LIB2ADDEH with vxlib.c and vxlib-tls.c.

From-SVN: r250775

Remove flag_tree_vectorize

gcc/

* common.opt (ftree-vectorize): No longer set flag_tree_vectorize.
(ftree-loop-vectorize): Set as EnabledBy ftree-vectorize.
(ftree-slp-vectorize): Likewise.
* omp-expand (expand_omp_simd): Remove flag_tree_vectorize, as it
can no longer be set independent of flag_tree_loop_vectorize.
* omp-general.c (emp_max_vf): Likewise.
* opts.c (enable_fdo_optimizations): Remove references to
flag_tree_vectorize, these are now implicit.
(common_handle_option): Remove handling for OPT_ftree_vectorize,
and leave it for the options machinery.

From-SVN: r250774

Reverted 250770

From-SVN: r250773

Make mempcpy more optimal (PR middle-end/70140).

2017-08-01  Martin Liska  <mliska@suse.cz>

PR middle-end/70140
* gcc.dg/string-opt-1.c: Adjust test-case to scan for memcpy.
2017-08-01  Martin Liska  <mliska@suse.cz>

PR middle-end/70140
* builtins.c (expand_builtin_memcpy_args): Remove.
(expand_builtin_memcpy): Call newly added function
expand_builtin_memory_copy_args.
(expand_builtin_memcpy_with_bounds): Likewise.
(expand_builtin_mempcpy): Remove last argument.
(expand_builtin_mempcpy_with_bounds): Likewise.
(expand_builtin_memory_copy_args): New function created from
expand_builtin_mempcpy_args with small modifications.
(expand_builtin_mempcpy_args): Remove.
(expand_builtin_stpcpy): Remove unused argument.
(expand_builtin): Likewise.
(expand_builtin_with_bounds): Likewise.

From-SVN: r250771

dbl_mov_immediate_1.c: Use conditional assembler scans.

2017-08-01  Tamar Christina  <tamar.christina@arm.com>

* gcc.target/aarch64/dbl_mov_immediate_1.c:
Use conditional assembler scans.

From-SVN: r250770

re PR target/81641 (Assemble failure with named address spaces and -masm=intel)

PR target/81641
* config/i386/i386.c (ix86_print_operand_address_as): For -masm=intel
print "ds:" only for immediates in generic address space.

testsuite/ChangeLog:

PR target/81641
* gcc.target/i386/pr81641.c: New test.

From-SVN: r250769

re PR target/81639 (ICE in rtl_verify_bb_insns, at cfgrtl.c:2669 with a naked function)

PR target/81639
* config/i386/i386.c (ix86_funciton_naked): New prototype.
(ix86_function_ok_for_sibcall): Return false for naked functions.

testsuite/ChangeLog:

PR target/81639
* gcc.target/i386/pr81639.c: New test.

From-SVN: r250768

tree-ssa-pre.c (print_pre_expr): Handle NULL expr.

2017-08-01  Richard Biener  <rguenther@suse.de>

* tree-ssa-pre.c (print_pre_expr): Handle NULL expr.
(compute_antic): Seed worklist with exit block predecessors.
* cfganal.c (dfs_find_deadend): For a cycle return the source
of the edge closing it.

* gcc.dg/tree-ssa/ssa-dce-3.c: Adjust.
* gcc.dg/tree-ssa/split-path-5.c: Remove case with just dead
endless loop.
* gcc.dg/uninit-23.c: Adjust.

From-SVN: r250767

2017-08-01  Tamar Christina  <tamar.christina@arm.com>

* config/aarch64/aarch64.c
(aarch64_can_const_movi_rtx_p): Move 0 check.

From-SVN: r250766

tree.h (POINTER_TYPE_OVERFLOW_UNDEFINED): Delete.

* tree.h (POINTER_TYPE_OVERFLOW_UNDEFINED): Delete.
* fold-const.c (fold_comparison, fold_binary_loc): Delete use of
above macro.
* match.pd: Ditto in address comparison pattern.

gcc/testsuite
* gcc.dg/no-strict-overflow-7.c: Revise comment and test string.
* gcc.dg/tree-ssa/pr81388-1.c: Ditto.

From-SVN: r250765

re PR tree-optimization/81627 (ICE on valid code at -O3: in check_loop_closed_ssa_use, at tree-ssa-loop-manip.c:707)

PR tree-optimization/81627
* tree-predcom.c (prepare_finalizers): Always rewrite into loop
closed ssa form for store-store chain.

gcc/testsuite
* gcc.dg/tree-ssa/pr81627.c: New.

From-SVN: r250764

re PR tree-optimization/81620 (ICE in is_inv_store_elimination_chain, at tree-predcom.c:1651 with -O3)

PR tree-optimization/81620
* tree-predcom.c (add_ref_to_chain): Don't set has_max_use_after
for store-store chain.

gcc/testsuite
* gcc.dg/tree-ssa/pr81620-1.c: New.
* gcc.dg/tree-ssa/pr81620-2.c: New.

From-SVN: r250763

re PR fortran/53542 (Diagnostic of USE-associated variables shows original instead of renamed symbol name)

2017-08-01  Dominique d'Humieres  <dominiq@lps.ens.fr>

PR fortran/53542
* expr.c (gfc_check_init_expr): Use the renamed name.

PR testsuite/53542
* gfortran.dg/use_30.f90: New test.

From-SVN: r250762

re PR tree-optimization/81588 (Wrong code at -O2)

PR tree-optimization/81588
* tree-ssa-reassoc.c (optimize_range_tests_var_bound): If
ranges[i].in_p, invert comparison code ccode.  For >/>=,
swap rhs1 and rhs2 and comparison code unconditionally,
for </<= don't do that.  Don't swap rhs1/rhs2 again if
ranges[i].in_p, instead invert comparison code ccode if
opcode or oe->rank is BIT_IOR_EXPR.

* gcc.dg/tree-ssa/pr81588.c: New test.
* gcc.dg/pr81588.c: New test.
* gcc.c-torture/execute/pr81588.c: New test.

From-SVN: r250760

re PR target/80846 (auto-vectorized AVX2 horizontal sum should narrow to 128b right away, to be more efficient for Ryzen and Intel)

PR target/80846
* optabs.def (vec_extract_optab, vec_init_optab): Change from
a direct optab to conversion optab.
* optabs.c (expand_vector_broadcast): Use convert_optab_handler
with GET_MODE_INNER as last argument instead of optab_handler.
* expmed.c (extract_bit_field_1): Likewise.  Use vector from
vector extraction if possible and optab is available.
* expr.c (store_constructor): Use convert_optab_handler instead
of optab_handler.  Use vector initialization from smaller
vectors if possible and optab is available.
* tree-vect-stmts.c (vectorizable_load): Likewise.
* doc/md.texi (vec_extract, vec_init): Document that the optabs
now have two modes.
* config/i386/i386.c (ix86_expand_vector_init): Handle expansion
of vec_init from half-sized vectors with the same element mode.
* config/i386/sse.md (ssehalfvecmode): Add V4TI case.
(ssehalfvecmodelower, ssescalarmodelower): New mode attributes.
(reduc_plus_scal_v8df, reduc_plus_scal_v4df, reduc_plus_scal_v2df,
reduc_plus_scal_v16sf, reduc_plus_scal_v8sf, reduc_plus_scal_v4sf,
reduc_<code>_scal_<mode>, reduc_umin_scal_v8hi): Add element mode
after mode in gen_vec_extract* calls.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><ssescalarmodelower>): ... this.
(vec_extract<mode><ssehalfvecmodelower>): New expander.
(rotl<mode>3, rotr<mode>3, <shift_insn><mode>3, ashrv2di3): Add
element mode after mode in gen_vec_init* calls.
(VEC_INIT_HALF_MODE): New mode iterator.
(vec_init<mode>): Renamed to ...
(vec_init<mode><ssescalarmodelower>): ... this.
(vec_init<mode><ssehalfvecmodelower>): New expander.
* config/i386/mmx.md (vec_extractv2sf): Renamed to ...
(vec_extractv2sfsf): ... this.
(vec_initv2sf): Renamed to ...
(vec_initv2sfsf): ... this.
(vec_extractv2si): Renamed to ...
(vec_extractv2sisi): ... this.
(vec_initv2si): Renamed to ...
(vec_initv2sisi): ... this.
(vec_extractv4hi): Renamed to ...
(vec_extractv4hihi): ... this.
(vec_initv4hi): Renamed to ...
(vec_initv4hihi): ... this.
(vec_extractv8qi): Renamed to ...
(vec_extractv8qiqi): ... this.
(vec_initv8qi): Renamed to ...
(vec_initv8qiqi): ... this.
* config/rs6000/vector.md (VEC_base_l): New mode attribute.
(vec_init<mode>): Renamed to ...
(vec_init<mode><VEC_base_l>): ... this.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><VEC_base_l>): ... this.
* config/rs6000/paired.md (vec_initv2sf): Renamed to ...
(vec_initv2sfsf): ... this.
* config/rs6000/altivec.md (splitter, altivec_copysign_v4sf3,
vec_unpacku_hi_v16qi, vec_unpacku_hi_v8hi, vec_unpacku_lo_v16qi,
vec_unpacku_lo_v8hi, mulv16qi3, altivec_vreve<mode>2): Add
element mode after mode in gen_vec_init* calls.
* config/aarch64/aarch64-simd.md (vec_init<mode>): Renamed to ...
(vec_init<mode><Vel>): ... this.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><Vel>): ... this.
* config/aarch64/iterators.md (Vel): New mode attribute.
* config/s390/s390.c (s390_expand_vec_strlen, s390_expand_vec_movstr):
Add element mode after mode in gen_vec_extract* calls.
* config/s390/vector.md (non_vec_l): New mode attribute.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><non_vec_l>): ... this.
(vec_init<mode>): Renamed to ...
(vec_init<mode><non_vec_l>): ... this.
* config/s390/s390-builtins.def (s390_vlgvb, s390_vlgvh, s390_vlgvf,
s390_vlgvf_flt, s390_vlgvg, s390_vlgvg_dbl): Add element mode after
vec_extract mode.
* config/arm/iterators.md (V_elem_l): New mode attribute.
* config/arm/neon.md (vec_extract<mode>): Renamed to ...
(vec_extract<mode><V_elem_l>): ... this.
(vec_extractv2di): Renamed to ...
(vec_extractv2didi): ... this.
(vec_init<mode>): Renamed to ...
(vec_init<mode><V_elem_l>): ... this.
(reduc_plus_scal_<mode>, reduc_plus_scal_v2di, reduc_smin_scal_<mode>,
reduc_smax_scal_<mode>, reduc_umin_scal_<mode>,
reduc_umax_scal_<mode>, neon_vget_lane<mode>, neon_vget_laneu<mode>):
Add element mode after gen_vec_extract* calls.
* config/mips/mips-msa.md (vec_init<mode>): Renamed to ...
(vec_init<mode><unitmode>): ... this.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><unitmode>): ... this.
* config/mips/loongson.md (vec_init<mode>): Renamed to ...
(vec_init<mode><unitmode>): ... this.
* config/mips/mips-ps-3d.md (vec_initv2sf): Renamed to ...
(vec_initv2sfsf): ... this.
(vec_extractv2sf): Renamed to ...
(vec_extractv2sfsf): ... this.
(reduc_plus_scal_v2sf, reduc_smin_scal_v2sf, reduc_smax_scal_v2sf):
Add element mode after gen_vec_extract* calls.
* config/mips/mips.md (unitmode): New mode iterator.
* config/spu/spu.c (spu_expand_prologue, spu_allocate_stack,
spu_builtin_extract): Add element mode after gen_vec_extract* calls.
* config/spu/spu.md (inner_l): New mode attribute.
(vec_init<mode>): Renamed to ...
(vec_init<mode><inner_l>): ... this.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><inner_l>): ... this.
* config/sparc/sparc.md (veltmode): New mode iterator.
(vec_init<VMALL:mode>): Renamed to ...
(vec_init<VMALL:mode><VMALL:veltmode>): ... this.
* config/ia64/vect.md (vec_initv2si): Renamed to ...
(vec_initv2sisi): ... this.
(vec_initv2sf): Renamed to ...
(vec_initv2sfsf): ... this.
(vec_extractv2sf): Renamed to ...
(vec_extractv2sfsf): ... this.
* config/powerpcspe/vector.md (VEC_base_l): New mode attribute.
(vec_init<mode>): Renamed to ...
(vec_init<mode><VEC_base_l>): ... this.
(vec_extract<mode>): Renamed to ...
(vec_extract<mode><VEC_base_l>): ... this.
* config/powerpcspe/paired.md (vec_initv2sf): Renamed to ...
(vec_initv2sfsf): ... this.
* config/powerpcspe/altivec.md (splitter, altivec_copysign_v4sf3,
vec_unpacku_hi_v16qi, vec_unpacku_hi_v8hi, vec_unpacku_lo_v16qi,
vec_unpacku_lo_v8hi, mulv16qi3): Add element mode after mode in
gen_vec_init* calls.

From-SVN: r250759

re PR tree-optimization/81297 (ICE in get_single_symbol)

2017-08-01  Richard Biener  <rguenther@suse.de>

PR tree-optimization/81297
* tree-vrp.c (get_single_symbol): Remove assert, instead drop
TREE_OVERFLOW from INTEGER_CSTs.

* gcc.dg/torture/pr81297.c: New testcase.

From-SVN: r250758

naked-1.c (dg-options): Add -fno-pic.

* gcc.target/i386/naked-1.c (dg-options): Add -fno-pic.

From-SVN: r250757

Daily bump.

From-SVN: r250756

re PR tree-optimization/80925 (vect peeling failures)

2017-07-31  Steve Ellcey  <sellcey@cavium.com>

PR tree-optimization/80925
* gcc.dg/vect/no-section-anchors-vect-69.c: Add
--param vect-max-peeling-for-alignment=0 option.
Remove unaligned access and peeling checks.
* gcc.dg/vect/section-anchors-vect-69.c: Ditto.

From-SVN: r250752

builtins-4-runnable.c: Fix dg argument that got missed in commit 250746.

gcc/testsuite/ChangeLog:

2017-07-31  Carl Love  <cel@us.ibm.com>

* gcc.target/powerpc/builtins-4-runnable.c: Fix dg argument that got
missed in commit 250746.

From-SVN: r250751

Update myself in MAINTAINERS

From-SVN: r250750

rs6000: Trailing comma warning in enum

* config/rs6000/rs6000.c (enum rs6000_reg_type): Delete trailing comma.

From-SVN: r250749

* es.po, uk.po: Update.

From-SVN: r250747

rs6000-c: Add support for built-in functions vector signed char vec_xl_be (signed long...

gcc/ChangeLog:

2017-07-31  Carl Love  <cel@us.ibm.com>

* config/rs6000/rs6000-c: Add support for built-in functions
vector signed char vec_xl_be (signed long long, signed char *);
vector unsigned char vec_xl_be (signed long long, unsigned char *);
vector signed int vec_xl_be (signed long long, signed int *);
vector unsigned int vec_xl_be (signed long long, unsigned int *);
vector signed long long vec_xl_be (signed long long, signed long long *);
vector unsigned long long vec_xl_be (signed long long, unsigned long long *);
vector signed short vec_xl_be (signed long long, signed short *);
vector unsigned short vec_xl_be (signed long long, unsigned short *);
vector double vec_xl_be (signed long long, double *);
vector float vec_xl_be (signed long long, float *);
* config/rs6000/altivec.h (vec_xl_be): Add #define.
* config/rs6000/rs6000-builtin.def (XL_BE_V16QI, XL_BE_V8HI, XL_BE_V4SI,
XL_BE_V2DI, XL_BE_V4SF, XL_BE_V2DF, XL_BE): Add definitions for the builtins.
* config/rs6000/rs6000.c (altivec_expand_xl_be_builtin): Add function.
(altivec_expand_builtin): Add switch statement to call altivec_expand_xl_be
for each builtin.
(altivec_init_builtins): Add def_builtin for _builtin_vsx_le_be_v8hi,
__builtin_vsx_le_be_v4si, __builtin_vsx_le_be_v2di, __builtin_vsx_le_be_v4sf,
__builtin_vsx_le_be_v2df, __builtin_vsx_le_be_v16qi.
* doc/extend.texi: Update the built-in documentation file for the
new built-in functions.

gcc/testsuite/ChangeLog:

2017-07-31  Carl Love  <cel@us.ibm.com>

* gcc.target/powerpc/builtins-4-runnable.c: Add test cases for the
new builtins.

From-SVN: r250746

Compile pr79793-[12].c with -mtune=generic

pr79793-1.c and pr79793-2.c are failed when GCC is configured with
--with-cpu=slm since lea is used to adjust stack, instead of sub/add.
This patch uses -mtune=generic to always generate sub and add.

* gcc.target/i386/pr79793-1.c: Compile with -mtune=generic.
* gcc.target/i386/pr79793-2.c: Likewise.

From-SVN: r250745

re PR libstdc++/81599 (Error in documentation of std::stack)

PR libstdc++/81599
* include/bits/stl_stack.h: Fix typo.

From-SVN: r250743

re PR target/25967 (Add attribute naked for x86)

PR target/25967
* config/i386/i386.c (ix86_allocate_stack_slots_for_args):
New function.
(TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS): Define.

testsuite/ChangeLog:

PR target/25967
* gcc.target/i386/naked-3.c (dg-options): Use -O0.
(naked): Add attribute regparm(1) for x86_32 targets.
Add integer argument.  Remove global "data" variable.
(main): Pass integer argument to naked function.
* gcc.target/i386/naked-4.c: New test.

From-SVN: r250742

Add myself to MAINTAINERS.

From-SVN: r250741

[Committed] S/390: Support z14 as CPU name.

With IBM z14 officially announced we can add support for z14 as
preferred CPU name.  We still pass arch12 to Binutils in order to keep
older Binutils versions supported.

gcc/ChangeLog:

2017-07-31  Andreas Krebbel  <krebbel@linux.vnet.ibm.com>

* config.gcc: Add z14.
* config/s390/driver-native.c (s390_host_detect_local_cpu): Add
CPU model numbers for z13s and z14.
* config/s390/s390-c.c (s390_resolve_overloaded_builtin): Replace
arch12 with z14.
* config/s390/s390-opts.h (enum processor_type): Rename
PROCESSOR_ARCH12 to PROCESSOR_3906_Z14.
* config/s390/s390.c (processor_table): Add field for CPU name to
be passed to Binutils.
(s390_asm_output_machine_for_arch): Use the new field in
processor_table for Binutils.
(s390_expand_builtin): Replace arch12 with z14.
(s390_issue_rate): Rename PROCESSOR_ARCH12 to PROCESSOR_3906_Z14.
(s390_get_sched_attrmask): Likewise.
(s390_get_unit_mask): Likewise.
* config/s390/s390.opt: Add z14 to processor_type enum.

From-SVN: r250739

[PR 81477] Set versionable regardless of optimization level

2017-07-31  Martin Jambor  <mjambor@suse.cz>

PR hsa/81477
* ipa-fnsummary.c (ipa_fn_summary_generate): Set versionable
regardless of optimization level.

From-SVN: r250738

Recover GOTO predictor.

2017-07-31  Jan Hubicka <hubicka@ucw.cz>
    Martin Liska  <mliska@suse.cz>

* c-typeck.c (c_finish_goto_label): Build gimple predict
stament.
2017-07-31  Jan Hubicka <hubicka@ucw.cz>
    Martin Liska  <mliska@suse.cz>

* predict.def: Remove old comment and adjust probability.
* gimplify.c (should_warn_for_implicit_fallthrough): Ignore
PREDICT statements.
2017-07-31  Jan Hubicka <hubicka@ucw.cz>
    Martin Liska  <mliska@suse.cz>

* gcc.dg/predict-15.c: New test.
* gcc.dg/tree-ssa/vrp24.c: Update scanned pattern.
2017-07-31  Jan Hubicka <hubicka@ucw.cz>
    Martin Liska  <mliska@suse.cz>

* pt.c (tsubst_copy): Copy PREDICT_EXPR.
* semantics.c (finish_goto_stmt): Build gimple predict
stament.
* constexpr.c (potential_constant_expression_1): Handle
PREDICT_EXPR.

Co-Authored-By: Martin Liska <mliska@suse.cz>
From-SVN: r250737

re PR target/25967 (Add attribute naked for x86)

PR target/25967
* config/i386/i386.c (ix86_function_naked): New function.
(ix86_can_use_return_insn_p): Return false for naked functions.
(ix86_expand_prologue): Skip prologue for naked functions.
(ix86_expand_epilogue): Skip epilogue for naked functions
and emit trap instruction.
(ix86_warn_func_return): New function.
(ix86_attribute_table): Add "naked" attribute specification.
(TARGET_WARN_FUNC_RETURN): Define.
* doc/extend.texi (x86 Function Attributes) <naked>: Document it.

testsuite/ChangeLog:

PR target/25967
* gcc.target/i386/naked-1.c: New test.
* gcc.target/i386/naked-2.c: Ditto.
* gcc.target/i386/naked-3.c: Ditto.
* gcc.target/x86_64/abi/ms-sysv/ms-sysv.c: Remove
do_test_body0 stub function, use attribute "naked" instead.
* gcc.dg/pr44290-1.c: Use naked_functions effective target.
* gcc.dg/pr44290-2.c: Ditto.

From-SVN: r250736