Simplify std::scoped_lock destructor

* include/std/mutex (scoped_lock::~scoped_lock()): Use fold
expression.

From-SVN: r272187

Replace std::to_string for integers with optimized version

The std::to_chars functions from C++17 can be used to implement
std::to_string with much better performance than calling snprintf. Only
the __detail::__to_chars_len and __detail::__to_chars_10 functions are
needed for to_string, because it always outputs base 10 representations.

The return type of __detail::__to_chars_10 should not be declared before
C++17, so the function body is extracted into a new function that can be
reused by to_string and __detail::__to_chars_10.

The existing tests for to_chars rely on to_string to check for correct
answers. Now that they use the same code that doesn't actually ensure
correctness, so add new tests for std::to_string that compare against
printf output.

* include/Makefile.am: Add new <bits/charconv.h> header.
* include/Makefile.in: Regenerate.
* include/bits/basic_string.h (to_string(int), to_string(unsigned))
(to_string(long), to_string(unsigned long), to_string(long long))
(to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
* include/bits/charconv.h: New header.
(__detail::__to_chars_len): Move here from <charconv>.
(__detail::__to_chars_10_impl): New function extracted from
__detail::__to_chars_10.
* include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
(__to_chars_unsigned_type): New class template that reuses
__make_unsigned_selector_base::__select to pick a type.
(__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
(__detail::__to_chars_len): Move to new header.
(__detail::__to_chars_10): Add inline specifier. Move code doing the
output to __detail::__to_chars_10_impl and call that.
* include/std/version (__cpp_lib_to_chars): Add, but comment out.
* testsuite/21_strings/basic_string/numeric_conversions/char/
to_string.cc: Fix reference in comment. Remove unused variable.
* testsuite/21_strings/basic_string/numeric_conversions/char/
to_string_int.cc: New test.

From-SVN: r272186

Disable hash-table sanitization for mem stats maps.

2019-06-12  Martin Liska  <mliska@suse.cz>

* ggc-common.c (ggc_prune_overhead_list): Do not sanitize
the created map.
* hash-map.h: Add sanitize_eq_and_hash into ::hash_map.
* mem-stats.h (mem_alloc_description::mem_alloc_description):
Do not sanitize created maps.

From-SVN: r272183

Remove value_range_constant_singleton in favor of value_range::singleton_p.

From-SVN: r272182

re PR target/90811 ([nvptx] ptxas error on OpenMP offloaded code)

PR target/90811
* cfgexpand.c (align_local_variable): Add really_expand argument,
don't SET_DECL_ALIGN if it is false.
(add_stack_var): Add really_expand argument, pass it through to
align_local_variable.
(expand_one_stack_var_1): Pass true as really_expand to
align_local_variable.
(expand_one_ssa_partition): Pass true as really_expand to
add_stack_var.
(expand_one_var): Pass really_expand through to add_stack_var.

From-SVN: r272181

[arm] Implement usadv16qi and ssadv16qi standard names

This patch implements the usadv16qi and ssadv16qi standard names for arm.

The V16QImode variant is important as it is the most commonly used pattern:
reducing vectors of bytes into an int.
The midend expects the optab to compute the absolute differences of operands 1
and 2 and reduce them while widening along the way up to SImode. So the inputs
are V16QImode and the output is V4SImode.

I've based my solution on Aarch64 usadv16qi and ssadv16qi standard names
current implementation (r260437). This solution emits below sequence of
instructions:

        VABDL.u8        tmp, op1, op2   # op1, op2 lowpart
        VABAL.u8        tmp, op1, op2   # op1, op2 highpart
        VPADAL.u16      op3, tmp

So, for the code:

$ arm-none-linux-gnueabihf-gcc -S -O3 -march=armv8-a+simd -mfpu=auto -mfloat-abi=hard usadv16qi.c -dp

#define N 1024
unsigned char pix1[N];
unsigned char pix2[N];

int
foo (void)
{
  int i_sum = 0;
  int i;
  for (i = 0; i < N; i++)
    i_sum += __builtin_abs (pix1[i] - pix2[i]);
  return i_sum;
}

we now generate on arm:
foo:
        movw    r3, #:lower16:pix2      @ 57    [c=4 l=4]  *arm_movsi_vfp/3
        movt    r3, #:upper16:pix2      @ 58    [c=4 l=4]  *arm_movt/0
        vmov.i32        q9, #0  @ v4si  @ 3     [c=4 l=4]  *neon_movv4si/2
        movw    r2, #:lower16:pix1      @ 59    [c=4 l=4]  *arm_movsi_vfp/3
        movt    r2, #:upper16:pix1      @ 60    [c=4 l=4]  *arm_movt/0
        add     r1, r3, #1024   @ 8     [c=4 l=4]  *arm_addsi3/4
.L2:
        vld1.8  {q11}, [r3]!    @ 11    [c=8 l=4]  *movmisalignv16qi_neon_load
        vld1.8  {q10}, [r2]!    @ 10    [c=8 l=4]  *movmisalignv16qi_neon_load
        cmp     r1, r3  @ 21    [c=4 l=4]  *arm_cmpsi_insn/2
        vabdl.u8        q8, d20, d22    @ 12    [c=8 l=4]  neon_vabdluv8qi
        vabal.u8        q8, d21, d23    @ 15    [c=88 l=4]  neon_vabaluv8qi
        vpadal.u16      q9, q8  @ 16    [c=8 l=4]  neon_vpadaluv8hi
        bne     .L2             @ 22    [c=16 l=4]  arm_cond_branch
        vadd.i32        d18, d18, d19   @ 24    [c=120 l=4]  quad_halves_plusv4si
        vpadd.i32       d18, d18, d18   @ 25    [c=8 l=4]  neon_vpadd_internalv2si
        vmov.32 r0, d18[0]      @ 30    [c=12 l=4]  vec_extractv2sisi/1

instead of:
foo:
        @ args = 0, pretend = 0, frame = 0
        @ frame_needed = 0, uses_anonymous_args = 0
        @ link register save eliminated.
        movw    r3, #:lower16:pix1
        movt    r3, #:upper16:pix1
        vmov.i32        q9, #0  @ v4si
        movw    r2, #:lower16:pix2
        movt    r2, #:upper16:pix2
        add     r1, r3, #1024
.L2:
        vld1.8  {q8}, [r3]!
        vld1.8  {q11}, [r2]!
        vmovl.u8 q10, d16
        cmp     r1, r3
        vmovl.u8 q8, d17
        vmovl.u8 q12, d22
        vmovl.u8 q11, d23
        vsub.i16        q10, q10, q12
        vsub.i16        q8, q8, q11
        vabs.s16        q10, q10
        vabs.s16        q8, q8
        vaddw.s16       q9, q9, d20
        vaddw.s16       q9, q9, d21
        vaddw.s16       q9, q9, d16
        vaddw.s16       q9, q9, d17
        bne     .L2
        vadd.i32        d18, d18, d19
        vpadd.i32       d18, d18, d18
        vmov.32 r0, d18[0]

2019-06-12  Przemyslaw Wirkus  <przemyslaw.wirkus@arm.com>

        * config/arm/iterators.md (VABAL): New int iterator.
        * config/arm/neon.md (<sup>sadv16qi): New define_expand.
        * config/arm/unspecs.md ("unspec"): Define UNSPEC_VABAL_S, UNSPEC_VABAL_U
        values.

        * gcc.target/arm/ssadv16qi.c: New test.
        * gcc.target/arm/usadv16qi.c: Likewise.

From-SVN: r272180

Remove wrong assert about single value profiler.

2019-06-12  Martin Liska  <mliska@suse.cz>

* value-prof.c (stream_out_histogram_value): Only first value
can't be negative.

From-SVN: r272179

re PR c/90760 (ICE on attributes section and alias in set_section, at symtab.c:1573)

PR c/90760
* symtab.c (symtab_node::set_section): Allow being called on aliases
as long as they aren't analyzed yet.

* gcc.dg/pr90760.c: New test.

From-SVN: r272178

Daily bump.

From-SVN: r272177

removed extra .com, fixed e-mail.

From-SVN: r272170

mips.c (mips_final_postscan_insn): Modify call to `mips_set_text_contents_type' to indicate whether a non-debug...

* config/mips/mips.c (mips_final_postscan_insn): Modify call
to `mips_set_text_contents_type' to indicate whether a
non-debug insn follows.

* gcc.target/mips/data-sym-pool.c: Update expected output.
* gcc.target/mips/data-sym-multi-pool.c: New test.

From-SVN: r272169

* MAINTAINERS (Write After Approval): Add myself.

From-SVN: r272168

Darwin, testsuite - Fix PR 65364 (uninit-19.c).

This test currently fails on Darwin, because the port inlines fn2 for
both PIC (and non-pic for m32).  Fixed by adjusting the target condition.

2019-06-11  Iain Sandoe  <iain@sandoe.co.uk>

PR testsuite/65364
* gcc.dg/uninit-19.c (fn1): Adjust target condition for Darwin.
(fn2): Likewise.

From-SVN: r272167

Do not enable -mpcrel by default at the current time

From-SVN: r272165

re PR target/90811 ([nvptx] ptxas error on OpenMP offloaded code)

PR target/90811
* config/nvptx/nvptx.c (nvptx_output_softstack_switch): Use and.b%d
instead of and.u%d.

* testsuite/libgomp.c/pr90811.c: New test.

From-SVN: r272161

Fix ConstexprIterator requirements tests - No constexpr algorithms!

2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>

Fix ConstexprIterator requirements tests - No constexpr algorithms!
* testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
Replace copy with hand-rolled loop.
* testsuite/23_containers/array/requirements/constexpr_iter.cc:
Ditto.

From-SVN: r272159

Allow conversions in X/[ex]4 < Y/[ex]4

2019-06-11  Marc Glisse  <marc.glisse@inria.fr>

gcc/
* match.pd (X/[ex]4<Y/[ex]4): Handle conversions.

gcc/testsuite/
* gcc.dg/tree-ssa/cmpexactdiv-5.c: New file.

From-SVN: r272158

PR c++/90449 - add -Winaccessible-base option.

       * doc/invoke.texi (Winaccessible-base): Document.

       * c.opt (Winaccessible-base): Added new option.

       * class.c (warn_about_ambiguous_bases): Changed name to:
       maybe_warn_about_inaccessible_bases.
       (maybe_warn_about_inaccessible_bases):  Implemented new
       Winaccessible-base warning option for both direct and virtual
       base warnings.
       (layout_class_type): Call to warn_about_ambiguous_bases changed to fit
       new name.

        * g++.dg/warn/Winaccessible-base-1.C: New file.
        * g++.dg/warn/Winaccessible-base-2.C: New file.
        * g++.dg/warn/Winaccessible-virtual-base-1.C: New file.
        * g++.dg/warn/Winaccessible-virtual-base-2.C: New file.

From-SVN: r272157

re PR c++/90801 (A recurring hang)

2019-06-11  Richard Biener  <rguenther@suse.de>

PR c++/90801
* typeck2.c (split_nonconstant_init_1): Avoid ordered remove
from CONSTRUCTOR by marking to remove elements and doing all
of them in a O(n) scan.

From-SVN: r272156

re PR c++/90810 (Different intrinsics behavior on G++ 7.4 and G++ 8.3)

PR c++/90810
* init.c (constant_value_1): Handle VECTOR_CST DECL_INITIAL for
!DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P decls like CONSTRUCTOR.

* g++.dg/ext/vector37.C: New test.

From-SVN: r272152

fold_real_zero_addition_p for vectors

2019-06-11  Marc Glisse  <marc.glisse@inria.fr>

PR tree-optimization/62041
* fold-const.c (fold_real_zero_addition_p): Handle vectors.

From-SVN: r272151

gdbhooks.py (TreePrinter.to_string): Recognize ggc_free'd memory.

* gdbhooks.py (TreePrinter.to_string): Recognize ggc_free'd memory.

* tree.c (get_tree_code_name): Likewise.
* print-tree.c (print_node): Only briefly print a node with an
invalid code.

From-SVN: r272150

Import these changes from the binutils/gdb repository:

2019-05-28  Nick Alcock  <nick.alcock@oracle.com>

* Makefile.def (dependencies): configure-libctf depends on all-bfd
and all its deps.
* Makefile.in: Regenerated.

2019-05-28  Nick Alcock  <nick.alcock@oracle.com>

* Makefile.def (host_modules): Add libctf.
* Makefile.def (dependencies): Likewise.
libctf depends on zlib, libiberty, and bfd.
* Makefile.in: Regenerated.
* configure.ac (host_libs): Add libctf.
* configure: Regenerated.

From-SVN: r272148

toir.cc (pop_label): Only queue labels in a vector.

2019-06-11  Richard Biener  <rguenthe@suse.de>

d/90778
* toir.cc (pop_label): Only queue labels in a vector.
(cmp_labels): Label decl comparator.
(pop_binding_level): Pop labels in DECL_UID order to avoid
debug info differences.

From-SVN: r272146

re PR bootstrap/90819 (-Walloc-size-larger-than error in trans-mem.c)

PR bootstrap/90819
* trans-mem.c (tm_memopt_compute_available): Add assertion
that blocks is not empty.  Formatting fix.

From-SVN: r272145

Disable htable sanitization in pt.c (PR c++/87847).

2019-06-11  Martin Liska  <mliska@suse.cz>

PR c++/87847
* hash-table.h: Extend create_gcc, add one parameter
that is passed into hash_table::hash_table.
2019-06-11  Martin Liska  <mliska@suse.cz>

PR c++/87847
* pt.c (init_template_processing): Disable hash table
sanitization for decl_specializations and type_specializations.

From-SVN: r272144

* libgcov-merge.c (__gcov_merge_single): Revert previous change.

From-SVN: r272143

Daily bump.

From-SVN: r272141

* config/i386/i386.md (absneg fp_reg splitter): Fix operator mode.

From-SVN: r272134

compiler: support inlining functions that use index expressions

    Also move the determine_types pass on an inlined function body to one
    place, rather than doing it ad hoc as needed.

    This adds 79 new inlinable functions in the standard library, such as
    bytes.HasPrefix and bytes.LastIndexByte.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181261

From-SVN: r272133

compiler: make heap expression's write barrier conditional

    Heap_expression::do_get_backend emits an unconditional write
    barrier if the type has pointers and it is not a stack allocation.
    This CL changes it to use a write barrier for the assignment only
    when write barriers are enabled. While here, also change it to
    call gcWriteBarrier instead of typedmemmove for pointer-shaped
    types.

    For this to work, Function::build needs to be adjusted so that
    Heap_expression::do_get_backend is called when there is a parent
    block.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181540

From-SVN: r272132

compiler: permit inlining functions with labels and goto statements

    This permits inlining functions with for loops and some switches, as
    they are lowered to if and goto statements before exporting them.

    This by itself only adds three new inlinable functions in the standard
    library: sort.Search, context.(*emptyCtx).String, and
    cmd/go/internal/work.(*Builder).disableBuildID.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181197

From-SVN: r272131

compiler: use gcWriteBarrier for pointer-shaped struct/array

    If a struct/array is pointer-shaped (i.e. having a single field
    that is pointer-shaped), we can use gcWriteBarrier instead of
    typedmemmove for the write barrier.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181539

From-SVN: r272130

re PR c++/87250 (Internal compiler error with -Os -fsyntax-only)

PR c++/87250
* g++.dg/cpp0x/pr87250.C: New test.

From-SVN: r272129

constexpr.c (free_constructor): New.

* constexpr.c (free_constructor): New.

(cxx_eval_call_expression): Free parameter value CONSTRUCTORs.

From-SVN: r272127

Reduce unsharing in constexpr call evaluation.

* constexpr.c (unshare_constructor): Only unshare if T is itself a
CONSTRUCTOR.
(cxx_eval_call_expression): Don't call it on the result here.

From-SVN: r272126

Reduce constexpr_call memory consumption.

* constexpr.c (cxx_bind_parameters_in_call): Use TREE_VEC rather
than TREE_LIST.
(constexpr_call_hasher::equal, cxx_bind_parameters_in_call)
(cxx_eval_call_expression): Adjust.

From-SVN: r272125

compiler: make escape analysis work with imported inlineable functions

    The escape analysis was written before we import inlineable
    function bodies, and in some places it skipped functions that are
    not in the local package. Now that there are imported function
    bodies, make the escape analysis work with them.

    Note that it is necessary for the escape analysis to run on
    imported function bodies, even if they are already tagged. The
    tags only have the information of the parameters (receiver,
    results), but not the internal nodes, e.g. local variables. We
    still need to do the analysis to get all the information. (In the
    future maybe we could export/import escape info for internal
    nodes also, then we don't need to redo the analysis.)

    Also add assertions to ensure that if we analyze the same
    function in multiple places, they'd better agree with each other.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181537

From-SVN: r272124

i386-protos.h (ix86_split_fp_absneg_operator): New prototype.

* config/i386/i386-protos.h (ix86_split_fp_absneg_operator):
New prototype.
* config/i386/i386-expand.c (ix86_expand_fp_absneg_operator):
Emit clobber also for non-sse operations.
(ix86_split_fp_absneg_operator): New function.
* config/i386/i386.md (SSEMODEF): New mode iterator.
(ssevecmodef): New mode attribute.
(<code>tf2): Use absneg code iterator.
(*<code>tf2_1): Rename from *absnegtf3_sse. Use absneg code iterator.
Add three-operand AVX alternatives.
(*<code><mode>2_i387_1): Rename from *absnegxf2_i387.
Use absneg code iterator and X87MODEF mode iterator.
(absneg fp_reg non-sse splitter): Call absneg code iterator
and X87MODEF mode iterator.
(absneg general_reg non-sse splitter): Use absneg code iterator
and X87MODEF mode iterator.  Use ix86_split_fp_absneg_operator.
(*<code><mode>2_1): Rename from *absneg<mode>2.  Use absneg
code iterator.  Add three-operand AVX alternative.
(absneg sse_reg splitter): Use absneg code iterator
and SSEMODEF mode iterator.  Handle AVX operands.
(absneg fp_reg splitter): Use absneg code iterator
and MODEF mode iterator.
(absneg general_reg splitter): Merge splitters using MODEF mode
iterator.  Use absneg code iterator.  Call
ix86_split_fp_absneg_operator.
(*<code><mode>2_i387): Rename from *<code><mode>2_1.
Do not enable for non-sse modes before reload.
(CSGNMODE): Remove.
(CSGNVMODE): Ditto.
(copysing<mode>3): Use SSEMODEF instead of CSGNMODE and
ssevecmodef mode attribute instaed of CSGNVMODE.
(copysign<mode>3_const): Ditto.
(copysign<mode>3_var): Ditto.
* config/i386/i386.md (*<code><mode>2): Rename from *absneg<mode>2.
Use absneg code iterator.  Simplify code using std::swap.
* config/i386/predicates.md (absneg_operator): Remove.

From-SVN: r272123

re PR testsuite/90772 (g++.dg/cpp1y/feat-cxx14.C and several others fails starting with r272011)

PR testsuite/90772
* g++.dg/cpp1y/feat-cxx14.C: Use std::size_t instead of size_t.
* g++.dg/cpp1z/feat-cxx1z.C: Likewise.
* g++.dg/cpp2a/feat-cxx2a.C: Likewise.
* g++.dg/cpp1z/pr85569.C: Include <functional>.
* g++.dg/tree-ssa/pr80293.C: Include <cstdint>.
* g++.dg/tree-ssa/pr69336.C: Include <stdexcept>.

From-SVN: r272122

PR other/90695 reduce testcase to remove library dependency

This reproduces the original ICE fixed by r178857 (tested at r178852 and
r178860), without depending on a libstdc++ header that keeps changing.

The number of errors differs between C++14 and C++17 modes, so the fixed
test uses dg-excess-errors to match any number of them. The precise
errors aren't what's being tested for here anyway, the point of the test
is to verify the ICE in PR 50391 is fixed.

PR other/90695
* g++.dg/cpp0x/noexcept15.C: Remove dependency on library header.

From-SVN: r272121

gimple-fold.c (get_range_strlen): Update comment that didn't make it into r267503 or related commits.

gcc/ChangeLog:

* gimple-fold.c (get_range_strlen): Update comment that didn't
make it into r267503 or related commits.

From-SVN: r272120

gcov-tool: Mark {merge,rewrite}_usage with noreturn attribute

2019-06-10  Vladislav Ivanishin  <vlad@ispras.ru>

* gcov-tool.c (merge_usage, rewrite_usage): Mark with
ATTRIBUTE_NORETURN thus making consistent with overlap_usage.

From-SVN: r272119

tree.def (OMP_SCAN): New tree code.

* tree.def (OMP_SCAN): New tree code.
* tree-core.h (enum omp_clause_code): Add OMP_CLAUSE_INCLUSIVE and
OMP_CLAUSE_EXCLUSIVE.
* tree.h (OMP_CLAUSES): Use OMP_SCAN instead of OMP_TASKGROUP.
(OMP_SCAN_BODY, OMP_SCAN_CLAUSES): Define.
* tree.c (omp_clause_num_ops, omp_clause_code_name): Add entries for
OMP_CLAUSE_{IN,EX}CLUSIVE.
(walk_tree_1): Handle OMP_CLAUSE_{IN,EX}CLUSIVE.
* tree-nested.c (convert_nonlocal_reference_stmt,
convert_local_reference_stmt, convert_gimple_call): Handle
GIMPLE_OMP_SCAN.
* tree-pretty-print.c (dump_omp_clause): Handle
OMP_CLAUSE_{IN,EX}CLUSIVE.
(dump_generic_node): Handle OMP_SCAN.
* gimple.def (GIMPLE_OMP_SCAN): New gimple code.
* gimple.h (gomp_scan): New type.
(is_a_helper <gomp_scan *>::test,
is_a_helper <const gomp_scan *>::test): New templates.
(gimple_build_omp_scan): Declare.
(gimple_omp_scan_clauses, gimple_omp_scan_clauses_ptr,
gimple_omp_scan_set_clauses): New inline functions.
(CASE_GIMPLE_OMP): Add case GIMPLE_OMP_SCAN:.
* gimple.c (gimple_build_omp_scan): New function.
(gimple_copy): Handle GIMPLE_OMP_SCAN.
* gimple-walk.c (walk_gimple_op, walk_gimple_stmt): Likewise.
* gimple-pretty-print.c (dump_gimple_omp_block): Don't handle
GIMPLE_OMP_TASKGROUP.
(dump_gimple_omp_scan): New function.
(pp_gimple_stmt_1): Handle GIMPLE_OMP_SCAN.
* gimple-low.c (lower_stmt): Handle GIMPLE_OMP_SCAN.
* tree-inline.c (remap_gimple_stmt, estimate_num_insns): Likewise.
* gimplify.c (enum gimplify_omp_var_data): Add GOVD_REDUCTION_INSCAN.
(is_gimple_stmt): Handle OMP_SCAN.
(gimplify_scan_omp_clauses): Reject inscan reductions on constructs
other than OMP_FOR or OMP_SIMD.  Handle OMP_CLAUSE_{IN,EX}CLUSIVE.
(gimplify_adjust_omp_clauses): Diagnose inscan reductions not
mentioned in nested #pragma omp scan.  Handle
OMP_CLAUSE_{IN,EX}CLUSIVE.
(gimplify_expr): Handle OMP_SCAN.
* omp-low.c (check_omp_nesting_restrictions): For parent context,
look through GIMPLE_OMP_SCAN context.  Allow #pragma omp scan in
simd constructs.
(scan_omp_1_stmt, lower_omp_1, diagnose_sb_1, diagnose_sb_2): Handle
GIMPLE_OMP_SCAN.
c-family/
* c-pragma.h (enum pragma_kind): Add PRAGMA_OMP_SCAN.
* c-pragma.c (omp_pragmas_simd): Add #pragma omp scan.
* c-omp.c (c_omp_split_clauses): Diagnose inscan reductions on
combined/composite constructs where it is not allowed.  Copy over
OMP_CLAUSE_REDUCTION_INSCAN.
c/
* c-parser.c (c_parser_pragma): Reject PRAGMA_OMP_SCAN.
(c_parser_omp_clause_reduction): Don't sorry_at on inscan reductions.
(c_parser_omp_scan_loop_body): New function.
(c_parser_omp_for_loop): Call c_parser_omp_scan_loop_body if there are
inscan reduction clauses.
* c-typeck.c (c_finish_omp_clauses): Reject mixing inscan with
non-inscan reductions on the same construct, or inscan reductions with
ordered or schedule clauses, or inscan array reductions.
cp/
* parser.c (cp_parser_omp_clause_reduction): Don't sorry_at on inscan
reductions.
(cp_parser_omp_scan_loop_body): New function.
(cp_parser_omp_for_loop): Call cp_parser_omp_scan_loop_body if there
are inscan reduction clauses.
(cp_parser_pragma): Reject PRAGMA_OMP_SCAN.
* semantics.c (finish_omp_clauses): Reject mixing inscan with
non-inscan reductions on the same construct, or inscan reductions with
ordered or schedule clauses, or inscan array reductions.
* pt.c (tsubst_omp_clauses): Handle OMP_CLAUSE_{IN,EX}CLUSIVE.
(tsubst_expr): Handle OMP_SCAN.
testsuite/
* c-c++-common/gomp/scan-1.c: New test.
* c-c++-common/gomp/scan-2.c: New test.
* c-c++-common/gomp/scan-3.c: New test.
* c-c++-common/gomp/scan-4.c: New test.

From-SVN: r272117

Update __gcov_* scanned function name in a test-case.

2019-06-10  Martin Liska  <mliska@suse.cz>

* gcc.dg/no_profile_instrument_function-attr-1.c: Fix
function name.

From-SVN: r272116

Reduce SCCs in IPA postorder.

2019-06-10  Martin Liska  <mliska@suse.cz>

* ipa-cp.c (ignore_edge_p): New function.
(build_toporder_info): Use it.
* ipa-inline.c (ignore_edge_p): New function/
(inline_small_functions): Use it.
* ipa-pure-const.c (ignore_edge_for_nothrow):
Verify opt_for_fn for caller and callee.
(ignore_edge_for_pure_const): Likewise.
* ipa-reference.c (ignore_edge_p): Extend to check
for opt_for_fn.
* ipa-utils.c (searchc): Refactor.
* ipa-utils.h: Fix coding style.

From-SVN: r272115

Add missing ATTR_UNUSED (PR bootstrap/90808).

2019-06-10  Martin Liska  <mliska@suse.cz>

PR bootstrap/90808
* libgcov.h: Add ATTRIBUTE_UNUSED.

From-SVN: r272114

[ARC] Update RTX costs.

Update RTX costs to reflect better the ARC architecture.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

* config/arc/arc.c (arc_rtx_costs): Update costs.

/gcc/testsuite
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

* gcc.target/arc/jumptables.c: Update test.

From-SVN: r272113

[ARC] Improve code gen when compiling for size

When optimizing for size, try to avoid using long immediate by
employing alternative instructions.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc-protos.h (arc_check_ior_const): Declare.
        (arc_split_ior): Likewise.
        (arc_check_mov_const): Likewise.
        (arc_split_mov_const): Likewise.
        * config/arc/arc.c (arc_print_operand): Fix 'z' letter.
        (arc_rtx_costs): Replace check Crr with Cax constraint.
        (prepare_move_operands): Cleanup, remove unused code.
        (arc_split_ior): New function.
        (arc_check_ior_const): Likewise.
        (arc_split_mov_const): Likewise.
        (arc_check_mov_const): Likewise.
        * config/arc/arc.md (movsi_insn): Restructure it, and convert it
        in define_insn_and_split pattern.
        (iorsi3): Likewise.
        (mulsi3_v2): Add new matching variant.
        (andsi3_i): Cleanup pattern.
        (rotrsi3_cnt1): Update pattern.
        (rotrsi3_cnt8): New pattern.
        (ashlsi2_cnt8): Likewise.
        (ashlsi2_cnt16): Likewise.
        * config/arc/constraints.md (C0p): Update constraint.
        (Crr): Remove it.
        (C0x): New pattern.
        (Cax): New pattern.

testsuite/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

        * gcc.target/arc/and-cnst-size.c: New test.
        * gcc.target/arc/mov-cnst-size.c: Likewise.
        * gcc.target/arc/or-cnst-size.c: Likewise.
        * gcc.target/arc/store-merge-1.c: Update test.
        * gcc.target/arc/arc700-stld-hazard.c: Likewise.
        * gcc.target/arc/cmem-1.c: Likewise.
        * gcc.target/arc/cmem-2.c: Likewise.
        * gcc.target/arc/cmem-3.c: Likewise.
        * gcc.target/arc/cmem-4.c: Likewise.
        * gcc.target/arc/cmem-5.c: Likewise.
        * gcc.target/arc/cmem-6.c: Likewise.
        * gcc.target/arc/loop-4.c: Likewise.
        * gcc.target/arc/movh_cl-1.c: Likewise.
        * gcc.target/arc/sdata-3.c: Likewise.

From-SVN: r272112

IPA ICF: enhance dump about items in a non-singular class.

2019-06-10  Martin Liska  <mliska@suse.cz>

* ipa-icf.c (sem_item_optimizer::parse_nonsingleton_classes):
Update coding style.
(sem_item_optimizer::dump_cong_classes):
Print how many items are in a non-singular class.  Improve
coding style.
2019-06-10  Martin Liska  <mliska@suse.cz>

* gcc.dg/ipa/pr68035.c: Update scanned pattern.

From-SVN: r272111

Add warn_unused_result attribute for memory-related functions in libiberty.

2019-06-10  Martin Liska  <mliska@suse.cz>

* ansidecl.h (ATTRIBUTE_WARN_UNUSED_RESULT): New macro.
* libiberty.h (xmalloc): Use it.
(xrealloc): Likewise.
(xcalloc): Likewise.
(xstrdup): Likewise.
(xstrndup): Likewise.
(xmemdup): Likewise.

From-SVN: r272110

Add alloc_size for libiberty memory allocation functions.

2019-06-10  Martin Liska  <mliska@suse.cz>

* ansidecl.h:
(ATTRIBUTE_RESULT_SIZE_1): Define new macro.
(ATTRIBUTE_RESULT_SIZE_2): Likewise.
(ATTRIBUTE_RESULT_SIZE_1_2): Likewise.
* libiberty.h (xmalloc): Add RESULT_SIZE attribute.
(xrealloc): Likewise.
(xcalloc): Likewise.

From-SVN: r272109

Update a bit dump format.

2019-06-10  Martin Liska  <mliska@suse.cz>

* value-prof.c (dump_histogram_value): Change dump format.
(gimple_mod_subtract_transform): Remove legacy comment.

From-SVN: r272108

Dump histograms only if present.

2019-06-10  Martin Liska  <mliska@suse.cz>

* value-prof.c (dump_histogram_value): Print histogram values
only if present.

From-SVN: r272107

Implement N disk counters for single value and indirect call counters.

2019-06-10  Martin Liska  <mliska@suse.cz>

* gcov-io.h (GCOV_DISK_SINGLE_VALUES): New.
(GCOV_SINGLE_VALUE_COUNTERS): Likewise.
* ipa-profile.c (ipa_profile_generate_summary):
Use get_most_common_single_value.
* tree-profile.c (gimple_init_gcov_profiler):
Instrument with __gcov_one_value_profiler_v2
and __gcov_indirect_call_profiler_v4.
* value-prof.c (dump_histogram_value):
Print all values for HIST_TYPE_SINGLE_VALUE.
(stream_out_histogram_value): Update assert for
N values.
(stream_in_histogram_value): Set number of
counters for HIST_TYPE_SINGLE_VALUE.
(get_most_common_single_value): New.
(gimple_divmod_fixed_value_transform):
Use get_most_common_single_value.
(gimple_ic_transform): Likewise.
(gimple_stringops_transform): Likewise.
(gimple_find_values_to_profile): Set number
of counters for HIST_TYPE_SINGLE_VALUE.
* value-prof.h (get_most_common_single_value):
New.
2019-06-10  Martin Liska  <mliska@suse.cz>

* Makefile.in: Add __gcov_one_value_profiler_v2,
__gcov_one_value_profiler_v2_atomic and
__gcov_indirect_call_profiler_v4.
* libgcov-merge.c (__gcov_merge_single): Change
function signature.
(merge_single_value_set): New.
* libgcov-profiler.c (__gcov_one_value_profiler_body):
Update functionality.
(__gcov_one_value_profiler): Remove.
(__gcov_one_value_profiler_v2): ... this.
(__gcov_one_value_profiler_atomic): Rename to ...
(__gcov_one_value_profiler_v2_atomic): this.
(__gcov_indirect_call_profiler_v3): Rename to ...
(__gcov_indirect_call_profiler_v4): ... this.
* libgcov.h (__gcov_one_value_profiler): Remove.
(__gcov_one_value_profiler_atomic): Remove.
(__gcov_one_value_profiler_v2_atomic): New.
(__gcov_indirect_call_profiler_v3): Remove.
(__gcov_one_value_profiler_v2): New.
(__gcov_indirect_call_profiler_v4): New.
(gcov_get_counter_ignore_scaling): New function.

From-SVN: r272106

testsuite - Require alias support in a test using it.

2019-06-10  Iain Sandoe  <iain@sandoe.co.uk>

* gcc.dg/attr-copy-6.c: Require alias support.

From-SVN: r272105

Fix build with --enable-gather-detailed-mem-stats.

2019-06-10  Martin Liska  <mliska@suse.cz>

* hash-map.h: Pass default value to hash_table ctor.
* hash-table.h: Add default value to call of a ctor.

From-SVN: r272104

Daily bump.

From-SVN: r272102

re PR c++/65175 (ICE forming a typedef with an alias template)

PR c++/65175
* g++.dg/cpp0x/alias-decl-69.C: New test.

From-SVN: r272098

re PR c++/60366 (ICE with self-invoking lambdas)

PR c++/60366
* g++.dg/cpp0x/lambda/lambda-ice32.C: New test.

From-SVN: r272092

re PR fortran/89365 (Inquiry functions for assumed rank objects fail)

2019-06-09  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/89365
* gfortran.dg/assumed_rank_bounds_3.f90 : New test.

From-SVN: r272090

Daily bump.

From-SVN: r272089

Test for C++20 p0858 - ConstexprIterator requirements.

2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>

Test for C++20 p0858 - ConstexprIterator requirements.
* testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
New test.
* testsuite/23_containers/array/requirements/constexpr_iter.cc:
New test.

From-SVN: r272085

re PR fortran/90786 (ICE on procedure pointer assignment to function with class pointer result)

2019-06-08  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/90786
* trans-expr.c (pointer_assignment_is_proc_pointer) Remove as
it is very simple and only called from one place.
(gfc_trans_pointer_assignment): Rename non_proc_pointer_assign
as non_proc_ptr_assign. Assign to it directly, rather than call
to above, deleted function and use gfc_expr_attr instead of
only checking the reference chain.

2019-06-08  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/90786
* gfortran.dg/proc_ptr_51.f90 : New test.

From-SVN: r272084

re PR c++/52269 ([C++11] Body of constexpr function templates instantiated too eagerly in unevaluated operands)

PR c++/52269
* g++.dg/cpp0x/constexpr-decltype4.C: New test.

From-SVN: r272083

re PR fortran/90744 (Bogus length for character temporaries passed to external procedures since r268992)

2019-06-08  Thomas Koenig  <tkoenig@gcc.gnu.org>
Tomáš Trnka  <trnka@scm.com>

PR fortran/90744
* trans-types.c (get_formal_from_actual_arglist): Unset typespec
flags which make no sense for procedures without explicit
interface.

2019-06-08  Thomas Koenig  <tkoenig@gcc.gnu.org>
Tomáš Trnka  <trnka@scm.com>

PR fortran/90744
* gfortran.dg/deferred_character_33.f90: New test.
* gfortran.dg/deferred_character_33a.f90: New test.

From-SVN: r272082

Use consistent spelling of PCLMUL instruction

* doc/invoke.texi (C Dialect Options): Minor grammatical change.
(x86 Options): Replace all uses of "PCL_MUL" with "PCLMUL"

From-SVN: r272081

re PR c++/77548 (ICE on invalid C++ code with overloaded functions: in instantiate_type, at cp/class.c:8270)

PR c++/77548
* g++.dg/other/pr77548.C: New test.

From-SVN: r272079

re PR c++/72845 (gcc crashes (ICE) when compiling program with complex noexcept declaration)

PR c++/72845
* g++.dg/cpp0x/noexcept41.C: New test.

From-SVN: r272078

init_1.c: Remove options -O2 -fno-schedule-insns and instead pass -O.

2019-06-08  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

* gcc.target/aarch64/sve/init_1.c: Remove options
-O2 -fno-schedule-insns and instead pass -O.
Update assembly in comments.
* gcc.target/aarch64/sve/init_2.c: Likewise.
* gcc.target/aarch64/sve/init_3.c: Likewise.
* gcc.target/aarch64/sve/init_4.c: Likewise.
* gcc.target/aarch64/sve/init_5.c: Likewise and additionally
adjust dg-scan.
* gcc.target/aarch64/sve/init_6.c: Likewise.
* gcc.target/aarch64/sve/init_7.c: Likewise.
* gcc.target/aarch64/sve/init_8.c: Likewise.
* gcc.target/aarch64/sve/init_9.c: Likewise.
* gcc.target/aarch64/sve/init_10.c: Likewise.
* gcc.target/aarch64/sve/init_11.c: Likewise.
* gcc.target/aarch64/sve/init_12.c: Likewise.

From-SVN: r272073

re PR c++/77747 (GCC allows inheriting constructors from indirect base)

PR c++/77747
* g++.dg/cpp0x/inh-ctor33.C: New test.

From-SVN: r272071

re PR c++/77967 (ICE in cp_parser_type_name, at cp/parser.c:16419 (trying to add a method to a template alias))

PR c++/77967
* g++.dg/cpp0x/alias-decl-68.C: New test.

From-SVN: r272070

re PR c++/77771 (internal compiler error: in cxx_eval_bit_field_ref, at cp/constexpr.c:2090)

PR c++/77771
* g++.dg/cpp0x/constexpr-77771.C: New test.

From-SVN: r272068

Daily bump.

From-SVN: r272067

scanasm.exp (dg-function-on-line): Add pattern for hppa*-*-linux*.

* lib/scanasm.exp (dg-function-on-line): Add pattern for hppa*-*-linux*.

From-SVN: r272060

re PR target/90751 (-fpatchtable-function-entry  broken on hppa-linux-gnu-gcc/hppa64-linux-gnu-gcc)

PR target/90751
* config/pa/pa-linux.h (ASM_DECLARE_FUNCTION_NAME): Update comment.
Call pa_output_function_label>
(TARGET_ASM_FUNCTION_PROLOGUE): define.
* config/pa/pa-protos.h (pa_output_function_label): Declare.
* config/pa/pa.c (pa_output_function_prologue): Add ATTRIBUTE_UNUSED
to declaration.
(pa_linux_output_function_prologue): Declare.
(TARGET_ASM_FUNCTION_PROLOGUE): Delete define.
(pa_output_function_label): New.
(pa_output_function_prologue): Revise to use pa_output_function_label.
(pa_linux_output_function_prologue): New.
* config/pa/pa.h (TARGET_ASM_FUNCTION_PROLOGUE): Define.

From-SVN: r272059

Split up value_range::intersect into base (value_range_base) and
derived versions (value_range).

From-SVN: r272058

Synchronize libstdc++ PSTL with upstream LLVM PSTL

Rename PSTL macro's consistent with libstdc++ (and llvm upstream
project) standards.
* include/bits/c++config: Rename all macros of the form __PSTL* to
_PSTL*.
* include/std/algorithm: Likewise.
* include/std/execution: Likewise.
* include/std/numeric: Likewise.
* include/std/memory: Likewise.
* include/pstl/glue_memory_impl.h: Likewise.
* include/pstl/numeric_impl.h: Likewise.
* include/pstl/glue_memory_defs.h: Likewise.
* include/pstl/execution_defs.h: Likewise.
* include/pstl/utils.h: Likewise.
* include/pstl/algorithm_fwd.h: Likewise.
* include/pstl/unseq_backend_simd.h: Likewise.
* include/pstl/glue_execution_defs.h: Likewise.
* include/pstl/algorithm_impl.h: Likewise.
* include/pstl/parallel_impl.h: Likewise.
* include/pstl/memory_impl.h: Likewise.
* include/pstl/glue_numeric_defs.h: Likewise.
* include/pstl/parallel_backend_utils.h: Likewise.
* include/pstl/glue_algorithm_defs.h: Likewise.
* include/pstl/parallel_backend.h: Likewise.
* include/pstl/glue_numeric_impl.h: Likewise.
* include/pstl/parallel_backend_tbb.h: Likewise.
* include/pstl/numeric_fwd.h: Likewise.
* include/pstl/glue_algorithm_impl.h: Likewise.
* include/pstl/execution_impl.h: Likewise.
* include/pstl/pstl_config.h: Likewise.
* testsuite/util/pstl/pstl_test_config.h: Likewise.
* testsuite/util/pstl/test_utils.h: Likewise.
* testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
Likewise.
* testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
Likewise.
* testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
Likewise.
* testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
* testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
* testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
Likewise.
* testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.

Rename header guards to be consistent with upstream project's
conventions.
* include/pstl/glue_memory_impl.h: Rename all macros of the form
_PSTL_(.*)_H to _PSTL_\U\1_H.
* include/pstl/numeric_impl.h: Likewise.
* include/pstl/glue_memory_defs.h: Likewise.
* include/pstl/execution_defs.h: Likewise.
* include/pstl/utils.h: Likewise.
* include/pstl/algorithm_fwd.h: Likewise.
* include/pstl/unseq_backend_simd.h: Likewise.
* include/pstl/glue_execution_defs.h: Likewise.
* include/pstl/algorithm_impl.h: Likewise.
* include/pstl/parallel_impl.h: Likewise.
* include/pstl/memory_impl.h: Likewise.
* include/pstl/glue_numeric_defs.h: Likewise.
* include/pstl/parallel_backend_utils.h: Likewise.
* include/pstl/glue_algorithm_defs.h: Likewise.
* include/pstl/parallel_backend.h: Likewise.
* include/pstl/glue_numeric_impl.h: Likewise.
* include/pstl/parallel_backend_tbb.h: Likewise.
* include/pstl/numeric_fwd.h: Likewise.
* include/pstl/glue_algorithm_impl.h: Likewise.
* include/pstl/execution_impl.h: Likewise.
* include/pstl/pstl_config.h: Likewise.
* testsuite/util/pstl/pstl_test_config.h: Likewise.

Synchronize libstdc++ parallel algorithms with upstream
project.
* include/pstl/algorithm_fwd.h: Synchronize with
upstream PSTL project.
* include/pstl/algorithm_impl.h: Likewise.
* include/pstl/execution_defs.h: Likewise.
* include/pstl/execution_impl.h: Likewise.
* include/pstl/glue_algorithm_impl.h: Likewise.
* include/pstl/glue_execution_defs.h: Likewise.
* include/pstl/numeric_fwd.h: Likewise.
* include/pstl/numeric_impl.h: Likewise.
* include/pstl/parallel_backend.h: Likewise.
* include/pstl/pstl_config.h: Likewise.
* include/pstl/unseq_backend_simd.h: Likewise.
* include/pstl/parallel_backend_serial.h: New file.
* include/Makefile.am (pstl_headers): Add
parallel_backend_serial.h.
* include/Makefile.in: Regenerate.

Clean up non-conforming names
* include/pstl/algorithm_impl.h (__parallel_set_union_op):
Uglfiy copy_range1 and copy_range2
(__pattern_walk2_n): Rename local n to __n
* include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
Rename parameter _T to _Tp.

Integrate non-TBB serial backend support
* include/bits/c++config: Adjust TBB detection logic to select serial
PSTL backend if no TBB present.
* testsuite/utils/pstl/test_utils.h: Remove check for
_PSTL_USE_PAR_POLICIES

From-SVN: r272056

compiler: improve write barrier generation

    For string, slice, interface values, do assignments field by
    field instead of using typedmemmove.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181297

From-SVN: r272055

Avoid constexpr garbage for implicit conversion to void.

* constexpr.c (cxx_eval_constant_expression): Call
STRIP_ANY_LOCATION_WRAPPER early.
[CONVERT_EXPR]: Don't build anything for conversion to void.
[ADDR_EXPR]: ggc_free unused ADDR_EXPR.

From-SVN: r272054

Fix test that gets skipped as unsupported

* testsuite/24_iterators/container_access.cc: Move dg-options before
dg-do directive so the target check uses the -std option.

From-SVN: r272051

PR libstdc++/90770 fix missing src/debug/Makefile

PR libstdc++/90770
* configure: Regenerate.
* src/Makefile.am (stamp-debug): Also test for missing makefile.
* src/Makefile.in: Regenerate.

From-SVN: r272050

Makefile.in (genprogerr): Add condmd.

* Makefile.in (genprogerr): Add condmd.
(genprog): Remove it here.

From-SVN: r272047

re PR fortran/89100 (Default widths for i, f and g format specifiers in format strings)

2019-06-07  Mark Eggleston <mark.eggleston@codethink.com>

PR fortran/89100
* gfortran.dg/fmt_f_default_field_width_3.f90: Modify dg-error
to allow use when kind=16 is not supported.
* gfortran.dg/fmt_g_default_field_width_3.f90: Modify dg-error
to allow use when kind=16 is not supported.

From-SVN: r272046

compiler: support inlining functions with if statements

    This increases the number of inlinable functions from 455 to 500.
    An example of a newly inlinable function is strings.Compare.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181137

From-SVN: r272045

Document -march=gfx906 option.

2019-06-07  Andrew Stubbs  <ams@codesourcery.com>

gcc/
* doc/invoke.texi (AMD GCN Options): Add gfx906.

From-SVN: r272044

compiler: do simple deadcode elimination

    Normally the backend will do deadcode elimination and this is
    sufficient. However, the escape analysis operates on the AST that
    may have deadcode, and may cause things to escape that otherwise
    do not.

    This CL adds a simple deadcode elimination, run before the escape
    analysis.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/181080

From-SVN: r272043

re PR debug/90574 ([gdb] gdb wrongly stopped at a breakpoint in an unexecuted line of code)

2019-06-07  Richard Biener  <rguenther@suse.de>

PR debug/90574
* tree-cfg.c (stmt_starts_bb_p): Split blocks at labels
that appear after user labels.

* gcc.misc-tests/gcov-pr90574-1.c: New testcase.
* gcc.misc-tests/gcov-pr90574-2.c: Likewise.

From-SVN: r272040

Enable sanitization for hash tables.

2019-06-07  Martin Liska  <mliska@suse.cz>

* cselib.c (cselib_init): Disable hash table
sanitization.
* hash-set.h: Pass new default argument to m_table.
* hash-table.c: Add global variable with hash table
sanitization limit.
* hash-table.h (Allocator>::hash_table): Add new argument
to ctor.
(hashtab_chk_error): New.
* params.def (PARAM_HASH_TABLE_VERIFICATION_LIMIT): New.
* toplev.c (process_options): Set hash_table_sanitize_eq_limit
from the PARAM_HASH_TABLE_VERIFICATION_LIMIT value.

From-SVN: r272038

common.opt (flto-odr-type-merging): Ignore.

* common.opt (flto-odr-type-merging): Ignore.
* invoke.texi (-flto-odr-type-merging): Remove.
* ipa-devirt.c (odr_vtable_hasher:odr_name_hasher): Remove.
(can_be_vtable_hashed_p): Remove.
(hash_odr_vtable): Remove.
(odr_vtable_hasher::hash): Remove.
(types_same_for_odr): Remove.
(types_odr_comparable): Remove.
(odr_vtable_hasher::equal): Remove.
(odr_vtable_hash_type, odr_vtable_hash): Remove.
(add_type_duplicate): Do not synchronize vtable and name hashtables.
(get_odr_type): Do not use vtable hash.
(dump_odr_type): Remove commented out code.
(build_type_inheritance_graph): Do not allocate vtable hash.
(rebuild_type_inheritance_graph): Do not delete vtable hash.
* ipa-utils.h (type_with_linkage_p): Drop vtable hash path.
(odr_type_p): Likewise.
* tree.c (need_assembler_name_p): Remove flag_lto_odr_type_mering
test.

From-SVN: r272037

Make aliasing_component_refs_p to work harder when same_type_for_tbaa returns -1

* tree-ssa-alias.c (aliasing_component_refs_p): Do not give up
immediately after same_types_for_tbaa_p returns -1 and continue
looking for possible exact match; if matching types are arrays
watch for partial overlaps.
(indirect_ref_may_alias_decl_p): Watch for partial array overlaps.
(indirect_refs_may_alias_p): Do type based disambiguation first;
update comment.

* gcc.dg/lto/alias-access-path-2.0.c: New testcase.

From-SVN: r272036

Fix fwprop call to call to paradoxical_subreg_p

"mode" is the mode of "x", not the replacement value.

2019-06-06  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* fwprop.c (propagate_rtx): Fix call to paradoxical_subreg_p.

From-SVN: r272032

Remove indirect call top N counter type.

2019-06-07  Martin Liska  <mliska@suse.cz>

* doc/invoke.texi: Remove param.
* gcov-counter.def (GCOV_COUNTER_ICALL_TOPNV):
Remove.
* gcov-io.h (GCOV_ICALL_TOPN_VAL): Likewise.
(GCOV_ICALL_TOPN_NCOUNTS): Likewise.
* params.def (PARAM_INDIR_CALL_TOPN_PROFILE): Likewise.
* profile.c (instrument_values): Remove
HIST_TYPE_INDIR_CALL_TOPN.
* tree-profile.c (init_ic_make_global_vars):
Always build __gcov_indirect_call only.
(gimple_init_gcov_profiler): Remove usage
of PARAM_INDIR_CALL_TOPN_PROFILE.
(gimple_gen_ic_profiler): Likewise.
* value-prof.c (dump_histogram_value): Likewise.
(stream_in_histogram_value): Likewise.
(gimple_indirect_call_to_profile): Likewise.
(gimple_find_values_to_profile): Likewise.
* value-prof.h (enum hist_type): Likewise.
2019-06-07  Martin Liska  <mliska@suse.cz>

* Makefile.in: Remove usage of
_gcov_merge_icall_topn.
* libgcov-driver.c (gcov_sort_n_vals): Remove.
(gcov_sort_icall_topn_counter): Likewise.
(gcov_sort_topn_counter_arrays): Likewise.
(dump_one_gcov): Remove call to gcov_sort_topn_counter_arrays.
* libgcov-merge.c (__gcov_merge_icall_topn): Remove.
* libgcov-profiler.c (__gcov_topn_value_profiler_body):
Likewise.
(GCOV_ICALL_COUNTER_CLEAR_THRESHOLD): Remove.
(struct indirect_call_tuple): Remove.
(__gcov_indirect_call_topn_profiler): Remove.
* libgcov-util.c (__gcov_icall_topn_counter_op): Remove.
* libgcov.h (gcov_sort_n_vals): Remove.
(L_gcov_merge_icall_topn): Likewise.
(__gcov_merge_icall_topn): Likewise.
(__gcov_indirect_call_topn_profiler): Likewise.

From-SVN: r272030

Fix a thinko in tree-ssa-loop.c.

2019-06-07  Martin Liska  <mliska@suse.cz>

* tree-ssa-loop.c (get_lsm_tmp_name): Return at the end of the
function.

From-SVN: r272029

Add warn_unused_result for malloc-like functions (PR tree-optimization/78902).

2019-06-07  Martin Liska  <mliska@suse.cz>

PR tree-optimization/78902
* builtin-attrs.def (ATTR_WARN_UNUSED_RESULT): New.
(ATTR_MALLOC_NOTHROW_LEAF_LIST): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LEAF_LIST): New.
(ATTR_ALLOC_SIZE_2_NOTHROW_LIST): Remove.
(ATTR_MALLOC_SIZE_1_NOTHROW_LEAF_LIST): Remove.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_LIST): New.
(ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LIST): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST): New.
(ATTR_ALLOCA_SIZE_1_NOTHROW_LEAF_LIST): Remove.
(ATTR_ALLOCA_WARN_UNUSED_RESULT_SIZE_1_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_SIZE_1_2_NOTHROW_LEAF_LIST):  Remove.
(ATTR_MALLOC_WARN_UNUSED_RESULT_SIZE_1_2_NOTHROW_LEAF_LIST):
New.
(ATTR_ALLOC_SIZE_2_NOTHROW_LEAF_LIST): Remove.
(ATTR_ALLOC_WARN_UNUSED_RESULT_SIZE_2_NOTHROW_LEAF_LIST): New.
(ATTR_MALLOC_NOTHROW_NONNULL): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL): New.
(ATTR_MALLOC_NOTHROW_NONNULL_LEAF): Remove.
(ATTR_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF): New.
(ATTR_MALLOC_WARN_UNUSED_RESULT_NOTHROW_NONNULL_LEAF): New.
* builtins.def (BUILT_IN_ALIGNED_ALLOC): Change to use
warn_unused_result attribute.
(BUILT_IN_STRDUP): Likewise.
(BUILT_IN_STRNDUP): Likewise.
(BUILT_IN_ALLOCA): Likewise.
(BUILT_IN_CALLOC): Likewise.
(BUILT_IN_MALLOC): Likewise.
(BUILT_IN_REALLOC): Likewise.
2019-06-07  Martin Liska  <mliska@suse.cz>

PR tree-optimization/78902
* c-c++-common/asan/alloca_loop_unpoisoning.c: Use result
of __builtin_alloca.
* c-c++-common/asan/pr88619.c: Likewise.
* g++.dg/overload/using2.C: Likewise for malloc.
* gcc.dg/attr-alloc_size-5.c: Add new dg-warning.
* gcc.dg/nonnull-3.c: Use result of __builtin_strdup.
* gcc.dg/pr43643.c: Likewise.
* gcc.dg/pr59717.c: Likewise for calloc.
* gcc.dg/torture/pr71816.c: Likewise.
* gcc.dg/tree-ssa/pr78886.c: Likewise.
* gcc.dg/tree-ssa/pr79697.c: Likewise.
* gcc.dg/pr78902.c: New test.

From-SVN: r272028

Daily bump.

From-SVN: r272027

go/internal/gccgoimporter: ignore unexported and imported names

    Due to inlining, we can now see unexported functions and variables,
    and functions and variables imported from different packages.
    Ignore them rather than reporting them from this package.

    Handle $hash and $equal functions consistently, so that we discard the
    inline body if there is one.

    Ignore names created for result parameters for inlining purposes.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180758

From-SVN: r272023

compiler: permit inlining temporary statements and references

    This increases the number of inlinable functions from 439 to 455.
    An example is math/bits.Mul32, which uses temporaries to handle the
    tuple assignment.

    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/180837

From-SVN: r272022

RISC-V: Move STARTFILE_PREFIX_SPEC into target OS files.

gcc/
PR target/89955
* config/riscv/riscv.h (STARTFILE_PREFIX_SPEC): Deleted.
* config/riscv/freebsd.h (STARTFILE_PREFIX_SPEC): Added.
* config/riscv/linux.h (STARTFILE_PREFIX_SPEC): Added.

From-SVN: r272021

* sv.po: Update.

From-SVN: r272019