decl.c (grokdeclarator): Use rich_location::add_range in three more places; include gcc-rich-location.h.

/cp
2018-07-09  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (grokdeclarator): Use rich_location::add_range in three
more places; include gcc-rich-location.h.

/testsuite
2018-07-09  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/diagnostic/long-short.C: New.
* g++.dg/diagnostic/signed-unsigned.C: Likewise.
* g++.dg/diagnostic/virtual-friend.C: Likewise.
* g++.old-deja/g++.brendan/crash11.C: Adjust.

From-SVN: r262512

re PR debug/86413 (gcc.dg/guality/pr48437.c fail)

2018-07-09  Richard Biener  <rguenther@suse.de>

PR debug/86413
* dwarf2out.c (gen_block_die): For an early generated DIE
always output high/low PC attributes.

From-SVN: r262511

[debug] Handle debug references to skipped params

When compiling guality/vla-1.c with -O3 -g, vla a in f1 is optimized away, but
f1 still contains a debug expression describing the upper bound of the vla
(D.1914):
...
     __attribute__((noinline))
     f1 (intD.6 iD.1900)
     {
       <bb 2>
       saved_stack.1_2 = __builtin_stack_save ();
       # DEBUG BEGIN_STMT
       # DEBUG D#3 => i_1(D) + 1
       # DEBUG D#2 => (long intD.8) D#3
       # DEBUG D#1 => D#2 + -1
       # DEBUG D.1914 => (sizetype) D#1
...

Then f1 is cloned to a version f1.constprop with no parameters, eliminating
parameter i, and 'DEBUG D#3 => i_1(D) + 1' turns into 'D#3 => NULL'.

This patch fixes that by defining debug expressions for default defs of
eliminated parameters in remap_ssa_name:
...
     __attribute__((noinline))
     f1.constprop ()
     {
       intD.6 iD.1949;

       <bb 3>
       # DEBUG D#8 s=> iD.1900
       # DEBUG iD.1949 => D#8

       <bb 2>
+      # DEBUG D#6 s=> iD.1949
       saved_stack.1_1 = __builtin_stack_save ();
       # DEBUG BEGIN_STMT
-      # DEBUG D#3 => NULL
+      # DEBUG D#3 => D#6 + 1
       # DEBUG D#2 => (long intD.8) D#3
       # DEBUG D#1 => D#2 + -1
       # DEBUG D.1951 => (sizetype) D#1
...

Bootstrapped and reg-tested on x86_64.

2018-07-09  Tom de Vries  <tdevries@suse.de>

* cfgexpand.c (expand_debug_source_expr): Handle VAR_DECL.
* tree-inline.c (remap_ssa_name): Handle default def ssa_name mapping
onto VAR_DECL with abstract origin.

* gcc.dg/vla-1.c: New test.

From-SVN: r262510

Daily bump.

From-SVN: r262509

Daily bump.

From-SVN: r262505

RISC-V: Finish Ada port.

gcc/
* config/riscv/riscv.c (TARGET_CUSTOM_FUNCTION_DESCRIPTORS): New.

From-SVN: r262501

Fix sigsegv on -fdump-tree-all-enumerate_locals

2018-07-07  Tom de Vries  <tdevries@suse.de>

* tree-dfa.c (dump_enumerated_decls): Handle cfun->cfg == NULL.

* gcc.misc-tests/options.exp (check_for_all_options): Clean up dump
files.
(get_dump_flags): New proc.
(toplevel): Test all dump flags.

From-SVN: r262500

c-ada-spec.c (to_ada_name): Remove index parameter.

* c-ada-spec.c (to_ada_name): Remove index parameter.
(pp_ada_tree_identifier): Likewise.
(dump_ada_macros): Adjust call to to_ada_name.
(struct overloaded_name_hash): Delete.
(struct overloaded_name_hasher): Likewise.
(overloaded_names): Likewise.
(compute_overloading_index): Likewise.
(dump_ada_decl_name): Do not call compute_overloading_index and
adjust calls to pp_ada_tree_identifier.
(dump_ada_double_name): Adjust calls to pp_ada_tree_identifier.
(dump_ada_import): Add spc parameter and switch to aspect syntax.
(dump_ada_function_declaration): Adjust call to pp_ada_tree_identifier.
(dump_ada_enum_type): Remove type and display_convention parameters.
Adjust calls to pp_ada_tree_identifier.
(dump_ada_node): Likewise and for dump_ada_structure.
(dump_nested_type) <ENUMERAL_TYPE>: Adjust call to dump_ada_enum_type
and tidy up.
<RECORD_TYPE>: Adjust call to dump_ada_structure and switch to aspect
syntax.
(print_constructor): Adjust call to pp_ada_tree_identifier.
(print_destructor): Likewise.
(dump_ada_declaration): Switch to aspect syntax.
(dump_ada_structure): Likewise and tidy up.  Replace display_convention
parameter with nested parameter.
(dump_ads): Emit pragma Ada_2012 in lieu of pragma Ada_2005.
(dump_ada_specs): Do not delete overloaded_names table.

From-SVN: r262499

decl.c (gnat_to_gnu_entity): Add GNAT_DECL local variable and use it throughout.

* gcc-interface/decl.c (gnat_to_gnu_entity): Add GNAT_DECL local
variable and use it throughout.
<E_Variable>: If the nominal subtype of the object is unconstrained,
compute the Ada size separately and put in on the padding type if the
size is not fixed.
<E_Record_Type>: Minor tweak.
* gcc-interface/misc.c (gnat_type_max_size): Rename max_size_unit
into max_size_unit throughout.

From-SVN: r262498

gigi.h (add_decl_expr): Adjust prototype.

* gcc-interface/gigi.h (add_decl_expr): Adjust prototype.
* gcc-interface/decl.c (gnat_to_gnu_entity): Remove useless test.
* gcc-interface/trans.c (add_stmt_with_node): Remove exceptions.
(add_decl_expr): Change type of second parameter and rename it.
(renaming_from_instantiation_p): New function moved from...
(set_expr_location_from_node): Test for exceptions here and add one
for actual subtypes built for unconstrained composite actuals.
* gcc-interface/utils.c (renaming_from_instantiation_p): ...here.

From-SVN: r262497

trans.c (lvalue_required_p): Remove ALIASED parameter and adjust recursive calls.

* gcc-interface/trans.c (lvalue_required_p): Remove ALIASED parameter
and adjust recursive calls.
(Identifier_to_gnu): Adjust calls to lvalue_required_p.
(gnat_to_gnu): Likewise.

From-SVN: r262496

decl.c (gnat_to_gnu_param): Minor tweak.

* gcc-interface/decl.c (gnat_to_gnu_param): Minor tweak.
(gnat_to_gnu_subprog_type): New pure_flag local variable.  Set it for
a pure Ada function with a by-ref In parameter.  Propagate it onto the
function type by means of the TYPE_QUAL_RESTRICT flag.
* gcc-interface/utils.c (finish_subprog_decl): Set DECL_PURE_P if the
function type has the TYPE_QUAL_RESTRICT flag set.

From-SVN: r262495

tree-vrp.c (vrp_int_const_binop): Change overflow type to overflow_type.

* tree-vrp.c (vrp_int_const_binop): Change overflow type to
overflow_type.
(combine_bound): Use wide-int overflow calculation instead of
rolling our own.
* calls.c (maybe_warn_alloc_args_overflow): Change overflow type to
overflow_type.
* fold-const.c (int_const_binop_2): Same.
(extract_muldiv_1): Same.
(fold_div_compare): Same.
(fold_abs_const): Same.
* match.pd: Same.
* poly-int.h (add): Same.
(sub): Same.
(neg): Same.
(mul): Same.
* predict.c (predict_iv_comparison): Same.
* profile-count.c (slow_safe_scale_64bit): Same.
* simplify-rtx.c (simplify_const_binary_operation): Same.
* tree-chrec.c (tree_fold_binomial): Same.
* tree-data-ref.c (split_constant_offset_1): Same.
* tree-if-conv.c (idx_within_array_bound): Same.
* tree-scalar-evolution.c (iv_can_overflow_p): Same.
* tree-ssa-phiopt.c (minmax_replacement): Same.
* tree-vect-loop.c (is_nonwrapping_integer_induction): Same.
* tree-vect-stmts.c (vect_truncate_gather_scatter_offset): Same.
* vr-values.c (vr_values::adjust_range_with_scev): Same.
* wide-int.cc (wi::add_large): Same.
(wi::mul_internal): Same.
(wi::sub_large): Same.
(wi::divmod_internal): Same.
* wide-int.h: Change overflow type to overflow_type for neg, add,
mul, smul, umul, div_trunc, div_floor, div_ceil, div_round,
mod_trunc, mod_ceil, mod_round, add_large, sub_large,
mul_internal, divmod_internal.
(overflow_type): New enum.
(accumulate_overflow): New.

cp/
* decl.c (build_enumerator): Change overflow type to overflow_type.
* init.c (build_new_1): Same.

From-SVN: r262494

re PR target/84711 (AArch32 big-endian fails when taking subreg of a vector mode to a scalar mode.)

PR target/84711
* gcc.dg/vect/pr84711.c: Remove unnecessary sse
dg-require-effective-target.  Add -msse not just on i386-*, but
on all i?86-* and x86_64-*.

From-SVN: r262493

Daily bump.

From-SVN: r262492

tree-ssa-phiopt.c (cond_removal_in_popcount_pattern): New.

gcc/ChangeLog:

2018-07-06  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

* tree-ssa-phiopt.c (cond_removal_in_popcount_pattern): New.
(tree_ssa_phiopt_worker): Call cond_removal_in_popcount_pattern.

gcc/testsuite/ChangeLog:

2018-07-06  Kugan Vivekanandarajah  <kugan.vivekanandarajah@linaro.org>

* gcc.dg/tree-ssa/phi-opt-16.c: New test.
* gcc.dg/tree-ssa/phi-opt-17.c: New test.
* gcc.dg/tree-ssa/phi-opt-18.c: New test.
* gcc.dg/tree-ssa/phi-opt-19.c: New test.
* gcc.dg/tree-ssa/popcount3.c: New test.

From-SVN: r262488

tree-ssa-loop-niter.c (number_of_iterations_popcount): If popcount argument is checked for zero before entering loop, avoid checking again.

gcc/ChangeLog:

2018-07-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

* tree-ssa-loop-niter.c (number_of_iterations_popcount): If popcount
argument is checked for zero before entering loop, avoid checking again.

From-SVN: r262487

gimplify.h (generic_expr_could_trap_p): Set as global function.

gcc/ChangeLog:

2018-07-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

* gimplify.h (generic_expr_could_trap_p): Set as global function.
* gimplify.h (generic_expr_could_trap_p): Likwise.
* tree-scalar-evolution.c (expression_expensive_p): Handle COND_EXPR.

gcc/testsuite/ChangeLog:

2018-07-06  Kugan Vivekanandarajah  <kuganv@linaro.org>

* gcc.dg/tree-ssa/pr64183.c: Disable final value replacement
to preserve the test.
* gcc.target/i386/pr85073.c: Likewise.

From-SVN: r262486

re PR tree-optimization/86401 (The "For constants M and N, if M == (1LL << cst) - 1 && (N & M) == M,..." opts are only in fold-const.c and in RTL)

PR tree-optimization/86401
* fold-const.c (fold_binary_loc) <case BIT_AND_EXPR>: Move the
((A & N) + B) & M -> (A + B) & M etc. optimization into ...
(fold_bit_and_mask): ... here.  New helper function for match.pd.
* fold-const.h (fold_bit_and_mask): Declare.
* match.pd (((A & N) + B) & M -> (A + B) & M): New optimization.

* gcc.dg/tree-ssa/pr86401-1.c: New test.
* gcc.dg/tree-ssa/pr86401-2.c: New test.
* c-c++-common/rotate-9.c: New test.

From-SVN: r262485

re PR target/86324 (testsuite test divkc3-1.c FAILs when compiling with -mabi=ieeelongdouble)

gcc/
PR target/86324
* target.def (translate_mode_attribute): New hook.
* targhooks.h (default_translate_mode_attribute): Declare.
* targhooks.c (default_translate_mode_attribute): New function.
* doc/tm.texi.in (TARGET_TRANSLATE_MODE_ATTRIBUTE): New hook.
* doc/tm.texi: Regenerate.
* config/rs6000/rs6000.c (TARGET_TRANSLATE_MODE_ATTRIBUTE): Define.
(rs6000_translate_mode_attribute): New function.

gcc/c-family/
PR target/86324
* c-attribs.c (handle_mode_attribute): Call new translate_mode_attribute
target hook.

gcc/testsuite/
PR target/86324
gcc.target/powerpc/pr86324-1.c: New test.
gcc.target/powerpc/pr86324-2.c: Likewise.

From-SVN: r262484

RISC-V: Initial riscv linux Ada port.

* Makefile.rtl: Add riscv*-linux* support.
* libgnarl/s-linux__riscv.ads: New.
* libgnat/system-linux-riscv.ads: New.

From-SVN: r262482

Makefile patches from initial RISC-V cross/native build.

* Make-generated.in (treeprs.ads): Use $(GNATMAKE) instead of gnatmake.
(einfo.h, sinfo.h, stamp-snames, stamp-nmake): Likewise.
* gcc-interface/Makefile.in (xoscons): Likewise.

From-SVN: r262481

functions.h (__gnu_debug::__check_string): Move...

2018-07-06  François Dumont  <fdumont@gcc.gnu.org>

* include/debug/functions.h (__gnu_debug::__check_string): Move...
* include/debug/string (__gnu_debug::__check_string): ... here.
(_GLIBCXX_DEBUG_VERIFY_STR_COND_AT): New.
(__glibcxx_check_string_n_constructor): New.
(__gnu_debug::basic_string<>(const _CharT*, size_type, const _Alloc&)):
Use latter.
(__glibcxx_check_string_constructor): New.
(__gnu_debug::basic_string<>(const _CharT*, const _Alloc&)):
Use latter.
* testsuite/21_strings/basic_string/debug/1_neg.cc: New.
* testsuite/21_strings/basic_string/debug/2_neg.cc: New.

From-SVN: r262480

Update internal documentation to describe that DONE and FAIL
also apply to define_split and define_peephole2.

* doc/md.texi (define_split): Document DONE and FAIL.
(define_peephole2): Ditto.

From-SVN: r262479

PR libstdc++/84928 use std::move in <numeric> algorithms

P0616R0 altered the effects of the <numeric> algorithms to use std::move
on the accumulator values (resolving LWG 2055). This implements the
change for C++2a, but retains the previous behaviour for older
standards.

* include/bits/stl_numeric.h (_GLIBCXX_MOVE_IF_20): Define macro to
conditionally move, according to __cplusplus value.
(accumulate, inner_product, partial_sum, adjacent_difference): Use
_GLIBCXX_MOVE_IF_20.
* testsuite/26_numerics/accumulate/lwg2055.cc: New test.
* testsuite/26_numerics/adjacent_difference/lwg2055.cc: New test.
* testsuite/26_numerics/inner_product/lwg2055.cc: New test.
* testsuite/26_numerics/partial_sum/lwg2055.cc: New test.

From-SVN: r262477

Simplify linker script patterns for std::exception_ptr

* config/abi/pre/gnu.ver: Use wildcards to combine related patterns.

From-SVN: r262475

P0935R0 Eradicating unnecessarily explicit default constructors

This is the last remaining piece of P0935R0. This adds a default
constructor to each of the streambuf and stream types in <sstream> so
that default construction does not use the 'explicit' constructor that
has a single, defaulted argument.

P0935R0 Eradicating unnecessarily explicit default constructors
* config/abi/pre/gnu.ver: Tighten existing patterns and export new
default constructor symbols.
* include/std/sstream (basic_stringbuf, basic_istringstream)
(basic_ostringstream, basic_stringstream): Remove default arguments
from explicit constructors taking ios_base::openmode and add separate
non-explicit default constructors.
* testsuite/27_io/basic_istringstream/cons/default.cc: New.
* testsuite/27_io/basic_ostringstream/cons/default.cc: New.
* testsuite/27_io/basic_stringstream/cons/default.cc: New.
* testsuite/27_io/basic_stringbuf/cons/char/default.cc: New.
* testsuite/27_io/basic_stringbuf/cons/wchar_t/default.cc: New.

From-SVN: r262474

Require sse for testcase on i686.

PR target/84711
* gcc.dg/vect/pr84711.c: Add -msse for i686 targets.

From-SVN: r262472

* include/std/variant (__accepted_index): Use void_t.

From-SVN: r262471

Fix -Wpedantic issue with testcase on AArch64.

2018-07-06  Tamar Christina  <tamar.christina@arm.com>

* gcc.target/aarch64/struct_cpy.c: Remove ;.

From-SVN: r262470

Update config.sub

* config.sub: Sync with upstream version 2018-07-03.

From-SVN: r262469

RTEMS/Ada: Change system configuration

The previous system configuration led to undefined references to
__gnat_raise_nodefer_with_msg().

gcc/ada
* libgnat/system-rtems.ads (Frontend_Exceptions): Set to False.
(ZCX_By_Default): Set to True.

From-SVN: r262467

Update config.guess and config.sub

* config.guess: Sync with upstream version 2018-06-26.
* config.sub: Sync with upstream version 2018-07-02.

From-SVN: r262466

asm-2.c (REGISTER): Override for v850 too.

* gcc.dg/tree-ssa/asm-2.c (REGISTER): Override for v850 too.

2018-07-05  Fritz Reese  <fritzoreese@gmail.com>

From-SVN: r262465

re PR tree-optimization/86010 (redundant memset with smaller size not eliminated)

PR tree-optimization/86010
* tree-ssa-dse.c (compute_trims): More aggressively trim at
both the head and tail of mem* and str* calls.

From-SVN: r262464

RISC-V: Add support for riscv-*-*.

* config.gcc (riscv*-*-*): When setting xlen, handle riscv-*.

From-SVN: r262463

Daily bump.

From-SVN: r262462

aarch64-simd.md: correct flags text for MIN_EXPR replacement.

2018-07-05  Indu Bhagat  <indu.bhagat@oracle.com>

        * config/aarch64/aarch64-simd.md: correct flags text for
        MIN_EXPR replacement.

From-SVN: r262458

PR libstdc++/85831 define move constructors and operators for exceptions

PR libstdc++/85831
* config/abi/pre/gnu.ver: Export move constructors and move
assignment operators for std::logic_error and std::runtime_error.
* include/std/stdexcept: Use _GLIBCXX_NOTHROW instead of
_GLIBCXX_USE_NOEXCEPT.
(logic_error, runtime_error): Declare move constructors and move
assignment operators. When not declared already, define copy
constructors and copy assignment operators as explicit-defaulted.
(domain_error, invalid_argument, length_error, out_of_range)
(overflow_error, underflow_error): Define move constructors and move
assignment operators as explicitly-defaulted.
* libsupc++/exception.h (exception): Likewise.
* src/c++11/cow-stdexcept.cc (logic_error, runtime_error): Define
move constructors and move assignment operators as defaulted.
* testsuite/19_diagnostics/stdexcept.cc: Check that constructors and
assignment operators are defined.

From-SVN: r262456

Add missing '|' as wrong patch was applied.

From-SVN: r262453

dfp.m4 (enable_decimal_float): Enable for x86_64*-*-gnu* to catch x86_64 kFreeBSD and Hurd.

config/
* dfp.m4 (enable_decimal_float): Enable for x86_64*-*-gnu* to
catch x86_64 kFreeBSD and Hurd.

gcc/
* configure: Regenerated.

libdecnumber/
* configure: Regenerated.

libgcc/
* configure: Regenerated.

From-SVN: r262452

libtool.m4: Sort output of 'find' to enable deterministic builds.

        * libtool.m4: Sort output of 'find' to enable deterministic builds.
* ltmain.sh: Likewise.

From-SVN: r262451

Add xfail-if to some tests that fail with COW strings

These tests fail when run with -D_GLIBCXX_USE_CXX11_ABI=0

* testsuite/21_strings/basic_string/cons/char/deduction.cc: XFAIL for
COW strings.
* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
Likewise.
* testsuite/21_strings/basic_string/requirements/
explicit_instantiation/debug.cc: Likewise.

From-SVN: r262448

PR libstdc++/58265 add noexcept to basic_string::assign(basic_string&&)

PR libstdc++/58265
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::assign(basic_string&&)): Add conditional noexcept
depending on the allocator's is_always_equal property (LWG 2063).
* testsuite/21_strings/basic_string/modifiers/assign/char/
move_assign.cc: Check for non-throwing exception specification.
* testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
move_assign.cc: Likewise.

From-SVN: r262447

re PR fortran/86408 (bogus error: ABSTRACT INTERFACE must not have an assumed character length result (F2003: C418))

2018-07-05  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/86408
* resolve.c.c (resolve_contained_fntype): Reference to C418 is
in F2008 and not F2003.
(resolve_function): Ditto in error message. Also, exclude
deferred character length results from the error.

2018-07-05  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/86408
* gfortran.dg/deferred_character_20.f90: New test.

From-SVN: r262445

PR libstdc++/58265 implement LWG 2063 for COW strings

For COW strings the default constructor does not allocate when
_GLIBCXX_FULLY_DYNAMIC_STRING == 0, so can be noexcept. The move
constructor and swap do not allocate when the allocators are equal, so
add conditional noexcept using allocator_traits::is_always_equal.

PR libstdc++/58265
* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
[_GLIBCXX_FULLY_DYNAMIC_STRING==0] (basic_string::basic_string()):
Add GLIBCXX_NOEXCEPT.
(basic_string::operator=(basic_string&&)): Add _GLIBCXX_NOEXCEPT_IF
to depend on the allocator's is_always_equal property (LWG 2063).
(basic_string::swap(basic_string&)): Likewise.
* include/bits/basic_string.tcc [!_GLIBCXX_USE_CXX11_ABI]
(basic_string::swap(basic_string&)): Likewise.
* testsuite/21_strings/basic_string/allocator/char/move_assign.cc:
Check is_nothrow_move_assignable.
* testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc:
Check is_nothrow_move_assignable.
* testsuite/21_strings/basic_string/cons/char/
noexcept_move_construct.cc: Likewise.
* testsuite/21_strings/basic_string/cons/wchar_t/
noexcept_move_construct.cc: Likewise.

From-SVN: r262443

re PR fortran/83183 (Out of memory with option -finit-derived)

2018-07-05  Fritz Reese  <fritzoreese@gmail.com>

    gcc/fortran/ChangeLog:

PR fortran/83183
PR fortran/86325
* expr.c (class_allocatable, class_pointer, comp_allocatable,
comp_pointer): New helpers.
(component_initializer): Generate EXPR_NULL for allocatable or pointer
components. Do not generate initializers for components within BT_CLASS.
Do not assign to comp->initializer.
(gfc_generate_initializer): Use new helpers; move code to generate
EXPR_NULL for class allocatable components into component_initializer().

    gcc/testsuite/ChangeLog:

PR fortran/83183
PR fortran/86325
* gfortran.dg/init_flag_18.f90: New testcase.
* gfortran.dg/init_flag_19.f03: New testcase.

From-SVN: r262442

rs6000-c.c: Map ALTIVEC_BUILTIN_VEC_UNPACKH for float argument to VSX_BUILTIN_DOUBLEH_V4SF.

gcc/ChangeLog:

2018-07-05  Carl Love  <cel@us.ibm.com>

* config/rs6000/rs6000-c.c: Map ALTIVEC_BUILTIN_VEC_UNPACKH for
float argument to VSX_BUILTIN_DOUBLEH_V4SF.
Map ALTIVEC_BUILTIN_VEC_UNPACKL for float argument to
VSX_BUILTIN_DOUBLEL_V4SF.

gcc/testsuite/ChangeLog:

2018-07-05  Carl Love  <cel@us.ibm.com>
* gcc.target/altivec-1-runnable.c: New test file.
* gcc.target/altivec-2-runnable.c: New test file.
* gcc.target/vsx-7.c (main2): Change expected expected instruction
for tests.

From-SVN: r262439

PR tree-optimization/86400 - set<string>::set<char (*)[2]) constructor does not work with array argument

gcc/ChangeLog:
* tree-ssa-strlen.c (maybe_set_strlen_range): Use type size rather
than its domain to compute its the upper bound of a char array.

gcc/testsuite/ChangeLog:
* gcc.dg/strlenopt-47.c: New test.
* gcc.dg/strlenopt-48.c: New test.

From-SVN: r262438

Replace NO_IMPLICIT_EXTERN_C with SYSTEM_IMPLICIT_EXTERN_C.

gcc/
Replace NO_IMPLICIT_EXTERN_C with SYSTEM_IMPLICIT_EXTERN_C.
* doc/cpp.texi: Update comment.
* doc/tm.texi: Rebuilt.
* doc/tm.texi.in (NO_IMPLICIT_EXTERN_C): Replace with ...
(SYSTEM_IMPLICIT_EXTERN_C): ... this, opposite sense.
* doc/extend.texi (Backwards Compatibility): Clarify it is system
headers affected by extern "C".
* system.h: Poison NO_IMPLICIT_EXTERN_C.
* config/alpha/alpha.h, config/arm/uclinux-elf.h,
config/bfin/elf.h, config/cris/cris.h, config/darwin.h,
config/dragonfly.h, config/freebsd.h, config/gnu-user.h,
config/i386/cygming.h, config/i386/djgpp.h, config/i386/nto.h,
config/ia64/hpux.h, config/lm32/lm32.h, config/lm32/uclinux-elf.h,
config/lynx.h, config/mips/elf.h, config/mmix/mmix.h,
config/netbsd.h, config/pa/pa-hpux.h, config/powerpcspe/sysv4.h,
config/riscv/elf.h, config/rs6000/sysv4.h, config/rtems.h,
config/s390/tpf.h, config/sh/newlib.h, config/sol2.h,
config/sparc/openbsd64.h, config/sparc/sp-elf.h,
config/sparc/sp64-elf.h, config/spu/spu.h,
config/stormy16/stormy16.h, config/v850/v850.h,
config/visium/visium.h, config/vx-common.h, config/xtensa/elf.h: Don't
define NO_IMPLICIT_EXTERN_C.
* config/rs6000/aix.h: Set SYSTEM_IMPLICIT_EXTERN_C.

gcc/c-family/
* c-lex.c (fe_file_change): Check SYSTEM_IMPLICIT_EXTERN_C not
NO_IMPLICIT_EXTERN_C.

gcc/cp/
* cp/decl.c (decls_match): Check SYSTEM_IMPLICIT_EXTERN_C not
NO_IMPLICIT_EXTERN_C.
* cp/parser.c (cp_parser_parameter_declaration_clause): Likewise.

From-SVN: r262437

Fix can_change_mode_class for big-endian on Arm

gcc/

PR target/84711
* config/arm/arm.c (arm_can_change_mode_class): Use GET_MODE_UNIT_SIZE
instead of GET_MODE_SIZE when comparing Units.

gcc/testsuite/

PR target/84711
* gcc.target/arm/big-endian-subreg.c: New.

From-SVN: r262436

Correct subreg no-op handling for big-endian vec_select.

gcc/

PR target/84711
* rtlanal.c (set_noop_p): Constrain on mode change,
include hard-reg-set.h

gcc/testuite/

PR target/84711
* gcc.dg/vect/pr84711.c: New.

From-SVN: r262435

Simplify movmem code by always doing overlapping copies when larger than 8 bytes on AArch64.

This changes the movmem code in AArch64 that does copy for data between 4 and 7
bytes to use the smallest possible mode capable of copying the remaining bytes in one
go and then overlapping the reads if needed.

This means that if we're copying 5 bytes we would issue an SImode and QImode
load instead of two SImode loads.

This does smaller memory accesses but also gives the mid-end a chance to realise
that it can CSE the loads in certain circumstances. e.g. when you have something
like

return foo;

where foo is a struct. This would be transformed by the mid-end into SSA form as

D.XXXX = foo;

return D.XXXX;

This movmem routine will handle the first copy, but it's usually not needed,
the mid-end would do SImode and QImode stores into X0 for the 5 bytes example
but without the first copies being in the same mode, it doesn't know it doesn't
need the stores at all.

From-SVN: r262434

Revert
2018-07-04  Maxim Ostapenko  <m.ostapenko@samsung.com>

PR sanitizer/84250
* config/gnu-user.h (LIBASAN_EARLY_SPEC): Pass -lstdc++ for static
libasan.
* gcc.c: Do not pass LIBUBSAN_SPEC if ASan is enabled with UBSan.

* Makefile.am: Reorder libs.
* Makefile.in: Regenerate.
* asan/Makefile.am: Define DCAN_SANITIZE_UB=1, add dependancy from
libsanitizer_ubsan.la.
* asan/Makefile.in: Regenerate.
* ubsan/Makefile.am: Define new libsanitizer_ubsan.la library.
* ubsan/Makefile.in: Regenerate.

From-SVN: r262433

[testsuite] Remove 'note:' from scan-tree-dump directives

2018-07-05  Christophe Lyon  <christophe.lyon@linaro.org>

* c-c++-common/unroll-1.c: Remove 'note:' in matching string.
* c-c++-common/unroll-2.c: Likewise.
* g++.dg/cdce3.C: Likewise.
* g++.dg/ext/unroll-1.C: Likewise.
* g++.dg/ext/unroll-2.C: Likewise.
* g++.dg/ext/unroll-3.C: Likewise.
* gcc.dg/cdce1.c: Likewise.
* gcc.dg/cdce2.c: Likewise.
* gcc.dg/gomp/pr68128-1.c: Likewise.
* gcc.dg/vect/pr46032.c: Likewise.
* gcc.dg/vect/vect-cond-10.c: Likewise.
* gcc.dg/vect/vect-cond-8.c: Likewise.
* gcc.dg/vect/vect-cond-9.c: Likewise.
* gcc.dg/vect/vect-mask-load-1.c: Likewise.
* gcc.dg/vect/vect-mask-loadstore-1.c: Likewise.
* gcc.target/i386/avx-cvt-2.c: Likewise.
* gcc.target/i386/avx-cvt-3.c: Likewise.
* gcc.target/i386/avx2-cvt-2.c: Likewise.
* gcc.target/i386/avx2-gather-2.c: Likewise.
* gcc.target/i386/avx2-gather-6.c: Likewise.
* gcc.target/i386/avx512f-gather-2.c: Likewise.
* gcc.target/i386/sse2-cvt-2.c: Likewise.
* gfortran.dg/directive_unroll_1.f90: Likewise.
* gfortran.dg/directive_unroll_2.f90: Likewise.
* gnat.dg/unroll2.adb: Likewise.
* gnat.dg/unroll3.adb: Likewise.

From-SVN: r262432

[testsuite] Simplify dg-final

2018-07-05  Tom de Vries  <tdevries@suse.de>

* lib/gcc-dg.exp (dg-final): Simplify tcl code.

From-SVN: r262431

Fix my yesterday ChangeLog entry.

From-SVN: r262429

Daily bump.

From-SVN: r262428

P0646R1 Improving the Return Value of Erase-Like Algorithms I

In C++2a the remove, remove_if and unique members of std::list and
std::forward_list have been changed to return the number of elements
removed. This is an ABI change for the remove members and the
non-template unique members, so an abi-tag is used to give those symbols
new mangled names in C++2a mode. For the function templates the return
type is part of the mangled name so no abi-tag is needed.

* include/bits/forward_list.h (__cpp_lib_list_remove_return_type):
Define.
(forward_list::__remove_return_type): Define typedef as size_type or
void, according to __cplusplus value.
(_GLIBCXX_FWDLIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
empty, according to __cplusplus value.
(forward_list::remove, forward_list::unique): Use typedef and macro
to change return type and add abi-tag for C++2a.
(forward_list::remove_if<Pred>, forward_list::unique<BinPred>): Use
typedef to change return type for C++2a.
* include/bits/forward_list.tcc (_GLIBCXX20_ONLY): Define macro.
(forward_list::remove, forward_list::remove_if<Pred>)
(forward_list::unique<BinPred>): Return number of removed elements
for C++2a.
* include/bits/list.tcc (_GLIBCXX20_ONLY): Define macro.
(list::remove, list::unique, list::remove_if<Predicate>)
(list::unique<BinaryPredicate>): Return number of removed elements
for C++2a.
* include/bits/stl_list.h (__cpp_lib_list_remove_return_type): Define.
(list::__remove_return_type): Define typedef as size_type or
void, according to __cplusplus value.
(_GLIBCXX_LIST_REMOVE_RETURN_TYPE_TAG): Define macro as abi-tag or
empty, according to __cplusplus value.
(list::remove, list::unique): Use typedef and macro to change return
type and add abi-tag for C++2a.
(list::remove_if<Predicate>, list::unique<BinaryPredicate>): Use
typedef to change return type for C++2a.
* include/std/version (__cpp_lib_list_remove_return_type): Define.
* testsuite/23_containers/forward_list/operations/
remove_cxx20_return.cc: New.
* testsuite/23_containers/forward_list/operations/
unique_cxx20_return.cc: New.

From-SVN: r262423

re PR sanitizer/84250 (Symbol collision when using both Address and Undefined Behavior sanitizers (-fsanitize=address,undefined))

gcc/

2018-07-04  Maxim Ostapenko  <m.ostapenko@samsung.com>

PR sanitizer/84250
* config/gnu-user.h (LIBASAN_EARLY_SPEC): Pass -lstdc++ for static
libasan.
* gcc.c: Do not pass LIBUBSAN_SPEC if ASan is enabled with UBSan.

libsanitizer/

2018-07-04  Maxim Ostapenko  <m.ostapenko@samsung.com>

PR sanitizer/84250
* Makefile.am: Reorder libs.
* Makefile.in: Regenerate.
* asan/Makefile.am: Define DCAN_SANITIZE_UB=1, add dependancy from
libsanitizer_ubsan.la.
* asan/Makefile.in: Regenerate.
* ubsan/Makefile.am: Define new libsanitizer_ubsan.la library.
* ubsan/Makefile.in: Regenerate.

From-SVN: r262421

re PR c++/86398 (is_trivially_constructible always returns true even when is_constructible returns false)

PR c++/86398

gcc/cp/

PR c++/86398
* method.c (is_trivially_xible): Return false
if is_xible_helper returns a NULL_TREE.

testsuite/

PR c++/86398
* g++.dg/ext/is_trivially_constructible1.C: Add new tests.

From-SVN: r262420

re PR tree-optimization/86274 (SEGFAULT when logging std::to_string(NAN))

gcc/testsuite/ChangeLog:

PR tree-optimization/86274
* gcc.dg/tree-ssa/builtin-sprintf-9.c: Fix typo.

From-SVN: r262419

P0458R2 Checking for Existence of an Element in Associative Containers

* include/bits/stl_map.h (map::contains): Add for C++2a.
* include/bits/stl_multimap.h (multimap::contains): Likewise.
* include/bits/stl_multiset.h (multiset::contains): Likewise.
* include/bits/stl_set.h (set::contains): Likewise.
* include/bits/stl_tree.h (__has_is_transparent_t): Define alias.
(_Rb_tree::_M_find_tr, _Rb_tree::_M_count_tr)
(_Rb_tree::_M_lower_bound_tr, _Rb_tree::_M_upper_bound_tr)
(_Rb_tree::_M_equal_range_tr): Use __has_is_transparent_t.
* include/bits/unordered_map.h (unordered_map::contains)
(unordered_multimap::contains): Add for C++2a.
* include/bits/unordered_set.h (unordered_set::contains)
(unordered_multiset::contains): Likewise.
* testsuite/23_containers/map/operations/contains.cc: New.
* testsuite/23_containers/multimap/operations/contains.cc: New.
* testsuite/23_containers/multiset/operations/contains.cc: New.
* testsuite/23_containers/set/operations/contains.cc: New.
* testsuite/23_containers/unordered_map/operations/contains.cc: New.
* testsuite/23_containers/unordered_multimap/operations/contains.cc:
New.
* testsuite/23_containers/unordered_multiset/operations/contains.cc:
New.
* testsuite/23_containers/unordered_set/operations/contains.cc: New.

From-SVN: r262418

re PR libstdc++/86272 (__gnu_debug::string uses undefined __glibcxx_check_insert_range2)

2018-07-04  François Dumont  <fdumont@gcc.gnu.org>

PR libstdc++/86272
* include/debug/string
(__gnu_debug::basic_string<>::insert<_Ite>(const_iterator, _Ite, _Ite)):
Use __glibcxx_check_insert_range.
* 21_strings/basic_string/cons/char/1.cc: Adapt test to use
__gnu_debug::string when _GLIBCXX_DEBUG.
* 21_strings/basic_string/init-list.cc: Likewise.
* 21_strings/basic_string/modifiers/insert/char/1.cc: Likewise.
* 21_strings/basic_string/modifiers/insert/char/2.cc: Likewise.
* 21_strings/basic_string/modifiers/insert/char/83328.cc: Likewise.
* 21_strings/basic_string/types/1.cc: Likewise.

From-SVN: r262417

re PR fortran/82009 ([F08] ICE with block construct)

2018-07-04  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

PR fortran/82009
* trans-decl.c (gfc_process_block_locals): Delete assert and set
saved_local_decls = NULL_TREE.

* gfortran.dg/block_16.f08. New test.

From-SVN: r262416

Define "random_device" effective target

Currently only matches targets where _GLIBCXX_USE_RANDOM_TR1 is defined,
which means /dev/random and /dev/urandom are usable.

* testsuite/25_algorithms/make_heap/complexity.cc: Require effective
target for std::random_device.
* testsuite/26_numerics/random/random_device/cons/default.cc:
Likewise.
* testsuite/experimental/algorithm/sample-2.cc: Likewise.
* testsuite/experimental/algorithm/shuffle.cc: Likewise.
* testsuite/experimental/random/randint.cc: Likewise.
* testsuite/lib/libstdc++.exp
(check_effective_target_random_device): New proc.

From-SVN: r262415

Fix std::__rotl and std::__rotr

2018-07-04  Jonathan Wakely  <jwakely@redhat.com>
    Jakub Jelinek  <jakub@redhat.com>

* include/std/bit (__rotl, __rotr): Fix for non-power of two sizes.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r262414

re PR middle-end/86380 (incorrect comparison in function choose_multiplier)

PR middle-end/86380
* expmed.c (choose_multiplier): Fix incorrect comparison with mask.

From-SVN: r262401

Remove spurious $HOME include from BRIG FE Makefile

2018-07-04  Martin Jambor  <mjambor@suse.cz>

PR hsa/86371
* Make-lang.in (BRIGINCLUDES): Remove erroneous include path in $HOME.

From-SVN: r262398

tree-vrp.c (extract_range_from_binary_expr_1): Initialze neg_*_op* variables.

       * tree-vrp.c (extract_range_from_binary_expr_1): Initialze
       neg_*_op* variables.

From-SVN: r262380

PR libstdc++/86398 fix std::is_trivially_constructible regression

The intrinsic doesn't check for allowed conversions between scalar
types, so restore the std::is_constructible check.

Also make some trivial whitespace changes.

PR libstdc++/86398
* include/std/type_traits (is_trivially_constructible): Check
is_constructible before __is_trivially_constructible.
* testsuite/20_util/is_trivially_constructible/value.cc: Add more
tests, including negative cases.
* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Use
zero for dg-error lineno.
* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
Likewise.

From-SVN: r262379

Optimize std::rotl and std::rotr, add test for std::popcount

* include/std/bit (__rotl, __rotr): Avoid branch.
(_If_is_unsigned_integer): Use remove_cv_t.
* testsuite/26_numerics/bit/bitops.count/popcount.cc: New.

From-SVN: r262378

ssa-dom-thread-7.c: Adjust test because aarch64 has a slightly different IL that provides more...

* gcc.dg/tree-ssa/ssa-dom-thread-7.c: Adjust test because aarch64
has a slightly different IL that provides more threading
opportunities.

From-SVN: r262377

Fix bootstrap on ia64 with old GCC version.

2018-07-04  Martin Liska  <mliska@suse.cz>

* tree-switch-conversion.c: Define
        max_ratio_for_speed and max_ratio_for_size constants.

From-SVN: r262376

[multiple changes]

2018-07-04  Denys Vlasenko  <dvlasenk@redhat.com>
    Martin Liska  <mliska@suse.cz>

PR middle-end/66240
PR target/45996
PR c/84100
* common.opt: Rename align options with 'str_' prefix.
* common/config/i386/i386-common.c (set_malign_value): New
function.
(ix86_handle_option): Use it to set -falign-* options/
* config/aarch64/aarch64-protos.h (struct tune_params): Change
type from int to string.
* config/aarch64/aarch64.c: Update default values from int
to string.
* config/alpha/alpha.c (alpha_override_options_after_change):
Likewise.
* config/arm/arm.c (arm_override_options_after_change_1): Likewise.
* config/i386/dragonfly.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
* config/i386/freebsd.h (SUBALIGN_LOG): New.
(ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
* config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
* config/i386/gnu-user.h (SUBALIGN_LOG): New.
(ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
* config/i386/i386.c (struct ptt): Change type from int to
string.
(ix86_default_align): Set default values.
* config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Print
max skip conditionally.
* config/i386/iamcu.h (SUBALIGN_LOG): New.
(ASM_OUTPUT_MAX_SKIP_ALIGN):
* config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN):
* config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
* config/i386/openbsdelf.h (SUBALIGN_LOG): New.
(ASM_OUTPUT_MAX_SKIP_ALIGN) Print max skip conditionally.:
* config/i386/x86-64.h (SUBALIGN_LOG): New.
(ASM_OUTPUT_MAX_SKIP_ALIGN): Print
max skip conditionally.
(ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
* config/ia64/ia64.c (ia64_option_override): Set default values
        for alignment options.
* config/m68k/m68k.c: Handle new str_align_* options.
* config/mips/mips.c (mips_set_compression_mode): Change
type of constants.
(mips_option_override): Set default values for options.
* config/powerpcspe/powerpcspe.c (rs6000_option_override_internal):
        Likewise.
* config/rs6000/rs6000.c (rs6000_option_override_internal):
Likewise.
* config/rx/rx.c (rx_option_override): Likewise.
* config/rx/rx.h (JUMP_ALIGN): Use align_jumps_log.
(LABEL_ALIGN): Use align_labels_log.
(LOOP_ALIGN): Use align_loops_align.
* config/s390/s390.c (s390_asm_output_function_label): Use new
        macros.
* config/sh/sh.c (sh_override_options_after_change):
Change type of constants.
* config/spu/spu.c (spu_sched_init): Likewise.
* config/sparc/sparc.c (sparc_option_override): Set default
        values for options.
* config/visium/visium.c (visium_option_override): Likewise.
* config/visium/visium.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Do not
        emit p2align format with last argument if it's not needed.
* doc/invoke.texi: Document extended format of -falign-*.
* final.c: Use align_labels alignment.
* flags.h (struct target_flag_state): Change type to use
align_flags.
(struct align_flags_tuple): New.
(struct align_flags): Likewise.
(align_loops_log): Redefine macro to use new types.
(align_loops_max_skip): Redefine macro to use new types.
(align_jumps_log): Redefine macro to use new types.
(align_jumps_max_skip): Redefine macro to use new types.
(align_labels_log): Redefine macro to use new types.
(align_labels_max_skip): Redefine macro to use new types.
(align_functions_log): Redefine macro to use new types.
(align_loops): Redefine macro to use new types.
(align_jumps): Redefine macro to use new types.
(align_labels): Redefine macro to use new types.
(align_functions): Redefine macro to use new types.
(align_functions_max_skip): Redefine macro to use new types.
(align_loops_value): New macro.
(align_jumps_value): New macro.
(align_labels_value): New macro.
(align_functions_value): New macro.
* function.c (invoke_set_current_function_hook): Propagate
alignment values from flags to global variables default in
topleev.h.
* ipa-icf.c (sem_function::equals_wpa): Use
cl_optimization_option_eq instead of memcmp.
* lto-streamer.h (cl_optimization_stream_out): Support streaming
of string types.
(cl_optimization_stream_in): Likewise.
* optc-save-gen.awk: Support strings in cl_optimization.
* opth-gen.awk: Likewise.
* opts.c (finish_options): Remove error checking of invalid
value ranges.
(MAX_CODE_ALIGN): Remove.
(MAX_CODE_ALIGN_VALUE): Likewise.
(parse_and_check_align_values): New function.
(check_alignment_argument): Likewise.
(common_handle_option): Use check_alignment_argument.
* opts.h (parse_and_check_align_values): Declare.
* toplev.c (init_alignments): Remove.
(read_log_maxskip): New.
(parse_N_M): Likewise.
(parse_alignment_opts): Likewise.
(backend_init_target): Remove usage of init_alignments.
* toplev.h (parse_alignment_opts): Declare.
* tree-streamer-in.c (streamer_read_tree_bitfields): Add new
argument.
* tree-streamer-out.c (streamer_write_tree_bitfields): Likewise.
* tree.c (cl_option_hasher::equal): New.
* varasm.c: Use new global macros.
2018-07-04  Martin Liska  <mliska@suse.cz>

PR middle-end/66240
PR target/45996
PR c/84100
* lto.c (compare_tree_sccs_1): Use cl_optimization_option_eq
instead of memcmp.
2018-07-04  Martin Liska  <mliska@suse.cz>

PR middle-end/66240
PR target/45996
PR c/84100
* gcc.dg/pr84100.c (foo):
* gcc.target/i386/falign-functions-2.c: New test.
* gcc.target/i386/falign-functions.c: New test.

From-SVN: r262375

Temporary remove "at least 8 byte alignment" code from x86

2018-07-04  Denys Vlasenko  <dvlasenk@redhat.com>

* config/i386/dragonfly.h: (ASM_OUTPUT_MAX_SKIP_ALIGN):
Use a simpler align directive also if MAXSKIP = ALIGN-1.
* config/i386/gas.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/lynx.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/netbsd-elf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/i386.h (ASM_OUTPUT_MAX_SKIP_PAD): Likewise.
* config/i386/freebsd.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Remove "If N
is large, do at least 8 byte alignment" code. Add SUBALIGN_LOG
define. Use a simpler align directive also if MAXSKIP = ALIGN-1.
* config/i386/gnu-user.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/iamcu.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/openbsdelf.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.
* config/i386/x86-64.h (ASM_OUTPUT_MAX_SKIP_ALIGN): Likewise.

From-SVN: r262374

Fix DOS-based system build and fix documentation.

2018-07-04  Martin Liska  <mliska@suse.cz>
            Jonathan Wakely  <jwakely@redhat.com>

* coverage.c: Use correct type.
* doc/invoke.texi: Language correction.

Co-Authored-By: Jonathan Wakely <jwakely@redhat.com>
From-SVN: r262373

Remove legacy testcase for -fprofile-generate=./

2018-07-04  Martin Liska  <mliska@suse.cz>

* gcc.dg/pr47793.c: Remove.

From-SVN: r262372

Fix typo in bb-slp-over-widen-*.c

2018-07-04  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
* gcc.dg/vect/bb-slp-over-widen-1.c: Fix name of dump file for
final scan test.
* gcc.dg/vect/bb-slp-over-widen-2.c: Likewise.

From-SVN: r262371

i386: Add indirect_return function attribute

On x86, swapcontext may return via indirect branch when shadow stack
is enabled.  To support code instrumentation of control-flow transfers
with -fcf-protection, add indirect_return function attribute to inform
compiler that a function may return via indirect branch.

Note: Unlike setjmp, swapcontext only returns once.  Mark it return
twice will unnecessarily disable compiler optimization as shown in
the testcase here.

gcc/

PR target/85620
* config/i386/i386.c (rest_of_insert_endbranch): Also generate
ENDBRANCH for non-tail call which may return via indirect branch.
* doc/extend.texi: Document indirect_return attribute.

gcc/testsuite/

PR target/85620
* gcc.target/i386/pr85620-1.c: New test.
* gcc.target/i386/pr85620-2.c: Likewise.
* gcc.target/i386/pr85620-3.c: Likewise.
* gcc.target/i386/pr85620-4.c: Likewise.

From-SVN: r262370

h8300.md (logical<mode>3_sn, [...]): Merge into a single pattern.

        * config/h8300/h8300.md (logical<mode>3_sn, logical<mode>3): Merge
        into a single pattern.

From-SVN: r262369

PR tree-optimization/86274 - SEGFAULT when logging std::to_string(NAN)

gcc/ChangeLog:

PR tree-optimization/86274
* gimple-ssa-sprintf.c (fmtresult::type_max_digits): Verify
precondition.
(format_floating): Correct handling of infinities and NaNs.

gcc/testsuite/ChangeLog:

PR tree-optimization/86274
* gcc.dg/tree-ssa/builtin-sprintf-9.c: New test.
* gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Adjust.
* gcc.dg/tree-ssa/builtin-sprintf-warn-10.c: Same.
* gcc.dg/tree-ssa/builtin-sprintf-warn-15.c: Same.
* gcc.dg/tree-ssa/builtin-sprintf-warn-7.c: Same.
* gcc.dg/tree-ssa/builtin-sprintf.c: Same.
* gcc.dg/tree-ssa/pr83198.c: Same.

From-SVN: r262368

print-tree.c (print_real_cst): New function.

gcc/ChangeLog:

* print-tree.c (print_real_cst): New function.
(print_node_brief): Call it.
(print_node): Ditto.

From-SVN: r262367

h8300.md (ors code_iterator): New.

* config/h8300/h8300.md (ors code_iterator): New.
(bsetqi_msx, bnotqi_msx patterns and splitters): Consolidate into
a single pattern and single splitter.
(bsethi_msx, bnothi_msx patterns): Consolidate into a single pattern.
(iorqi3_1, xorqi3_1): Likewise.
(iorqi3, xorqi3 expanders): Similarly.

From-SVN: r262366

h8300.md (movmd_internal_normal): Consolidated with (movmd_internal) into a single pattern using the P mode iterator.

* config/h8300/h8300.md (movmd_internal_normal): Consolidated with
(movmd_internal) into a single pattern using the P mode iterator.
(movmd splitters): Similarly.
(stpcpy_internal_normal, stpcpy_internal): Similarly for thes patterns.
(movsd splitters): Similarly.

From-SVN: r262365

Daily bump.

From-SVN: r262364

P0556R3 Integral power-of-2 operations, P0553R2 Bit operations

P0553R2 is not in the C++2a working draft yet, but is likely to be
approved soon. Neither proposal supports std::byte but this adds
overloads of each function for std::byte, assuming that will also get
added.

* include/Makefile.am: Add new header.
* include/Makefile.in: Regenerate.
* include/precompiled/stdc++.h: Include new header.
* include/std/bit: New header.
(__rotl, __rotr, __countl_zero, __countl_one, __countr_zero)
(__countr_one, __popcount, __ispow2, __ceil2, __floor2, __log2p1):
Define for C++14.
[!__STRICT_ANSI__] (rotl, rotr, countl_zero, countl_one, countr_zero)
(countr_one, popcount): Define for C++2a. Also overload for std::byte.
(ispow2, ceil2, floor2, log2p1): Define for C++2a.
[!__STRICT_ANSI__] (ispow2, ceil2, floor2, log2p1): Overload for
std::byte.
* testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: New.
* testsuite/26_numerics/bit/bit.pow.two/floor2.cc: New.
* testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: New.
* testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: New.
* testsuite/26_numerics/bit/bitops.rot/rotl.cc: New.
* testsuite/26_numerics/bit/bitops.rot/rotr.cc: New.
* testsuite/26_numerics/bit/bitops.count/countl_one.cc: New.
* testsuite/26_numerics/bit/bitops.count/countl_zero.cc: New.
* testsuite/26_numerics/bit/bitops.count/countr_one.cc: New.
* testsuite/26_numerics/bit/bitops.count/countr_zero.cc: New.

From-SVN: r262360

Remove redundant #if conditional

The whole file is guarded by the same check already.

* include/bits/alloc_traits.h: Remove redundant preprocessor
condition.

From-SVN: r262359

decl.c (min_location): New.

/cp
2018-07-03  Paolo Carlini  <paolo.carlini@oracle.com>

* decl.c (min_location): New.
(smallest_type_quals_location): Use the latter.
(check_concept_fn): Use DECL_SOURCE_LOCATION.
(grokdeclarator): Use accurate locations in a number of error
messages involving ds_thread, ds_storage_class, ds_virtual,
ds_constexpr, ds_typedef and ds_friend; exploit min_location.

/testsuite
2018-07-03  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/other/locations1.C: New.
* g++.dg/tls/locations1.C: Likewise.
* g++.dg/diagnostic/virtual-constexpr.C: Likewise.
* g++.dg/diagnostic/virtual-static.C: Likewise.
* g++.dg/concepts/fn-concept2.C: Test the locations too.
* g++.dg/cpp0x/constexpr-virtual5.C: Likewise.
* g++.dg/cpp0x/pr51463.C: Likewise.
* g++.dg/other/typedef1.C: Likewise.
* g++.dg/parse/dtor13.C: Likewise.
* g++.dg/template/error44.C: Likewise.
* g++.dg/template/typedef4.C: Likewise.
* g++.dg/template/typedef5.C: Likewise.
* g++.dg/tls/diag-2.C: Likewise.
* g++.old-deja/g++.brendan/crash11.C: Likewise.

From-SVN: r262358

h8300.c (h8300_insn_length_from_table): Consolidate ADDB...

* config/h8300/h8300.c (h8300_insn_length_from_table): Consolidate
ADDB, ADDW and ADDL into a single ADD attribute which selects the
right table based on the size of the operand.
* config/h8300/h8300.md (length_table): Corresponding changes. All
references to "addb", "addw" and "addl" changed to "add".
(btst patterns): Merge two variants into a single pattern.
(tstqi, tsthi): Likewise.
(addhi3_incdec, addsi3_incdec): Likewise.
(subhi3_h8300hs, subsi3_h8300hs): Likewise.
(mulhi3, mulsi3): Likewise.
(udivhi3, udivsi3): Likewise.
(divhi3, divsi3): Likewise.
(andorqi3, andorhi3, andorsi3): Likewise.

From-SVN: r262357

re PR tree-optimization/85694 (Generation of vectorized AVG (Average) instruction)

PR target/85694
* config/i386/sse.md (uavg<mode>3_ceil): New expander.
(<sse2_avx2>_uavg<mode>3<mask_name>): Simplify expander.

testsuite/ChangeLog:

PR target/85694
* gcc.target/i386/pr85694.c: New test.

From-SVN: r262354

re PR c++/86201 (ICE: Error reporting routines re-entered)

PR c++/86201
* typeck.c (cp_build_binary_op): Check c_inhibit_evaluation_warnings.

* g++.dg/diagnostic/pr86201.C: New test.

From-SVN: r262353

stl_algobase.h (__niter_wrap): New.

2018-07-03  François Dumont  <fdumont@gcc.gnu.org>

* include/bits/stl_algobase.h (__niter_wrap): New.
(__copy_move_a2(_II, _II, _OI)): Use latter.
(__copy_move_backward_a2(_BI1, _BI1, _BI2)): Likewise.
(fill_n(_OI, _Size, const _Tp&)): Likewise.
(equal(_II1, _II1, _II2)): Use __glibcxx_requires_can_increment.
* include/debug/stl_iterator.h
(std::__niter_base(const __gnu_cxx::_Safe_iterator<
__gnu_cxx::__normal_iterator<>, _Sequence>&)): New declaration.
* include/debug/vector (__niter_base(const __gnu_cxx::_Safe_iterator<
__gnu_cxx::__normal_iterator<>, _Sequence>&)): New.

From-SVN: r262349

Reorg line_map data structures for better packing.

* include/line-map.h (enum lc_reason): Add LC_HWM.
(LINE_MAP_MAX_LOCATION): Define here.
(struct line_map): Move reason field to line_map_ordinary.  Adjust
GTY tagging.
(struct line_map_ordinary): Reorder fields for less padding.
(struct line_map_macro): Likewise.
(MAP_ORDINARY_P): New.
(linemap_check_ordinary, linemap_check_macro): Adjust.
* line-map.c (LINE_MAP_MAX_SOURCE_LOCATION): Delete.
(new_linemap): Take start_location, not reason.  Adjust.
(linemap_add, linemap_enter_macro): Adjust.
(linemap_line_start): Likewise.
(linemap_macro_expansion_map_p): Use MAP_ORDINARY_P.
(linemap_macro_loc_to_spelling_point): Likewise.
(linemap_macro_loc_to_def_point): Likewise.
(linemap_dump): Likewise.

From-SVN: r262348

[17/n] PR85694: AArch64 support for AVG_FLOOR/CEIL

This patch adds AArch64 patterns for the new AVG_FLOOR/CEIL operations.
AVG_FLOOR is [SU]HADD and AVG_CEIL is [SU]RHADD.

2018-07-03  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
PR tree-optimization/85694
* config/aarch64/iterators.md (HADD, RHADD): New int iterators.
(u): Handle UNSPEC_SHADD, UNSPEC_UHADD, UNSPEC_SRHADD and
UNSPEC_URHADD.
* config/aarch64/aarch64-simd.md (<u>avg<mode>3_floor)
(<u>avg<mode>3_ceil): New patterns.

gcc/testsuite/
PR tree-optimization/85694
* lib/target-supports.exp (check_effective_target_vect_avg_qi):
Return true for AArch64 without SVE.
* gcc.target/aarch64/vect_hadd_1.h: New file.
* gcc.target/aarch64/vect_shadd_1.c: New test.
* gcc.target/aarch64/vect_srhadd_1.c: Likewise.
* gcc.target/aarch64/vect_uhadd_1.c: Likewise.
* gcc.target/aarch64/vect_urhadd_1.c: Likewise.

From-SVN: r262347

Remove "note: " prefix from some scan-tree-dump directives

gcc/testsuite/ChangeLog:
* gcc.dg/vect/slp-perm-1.c: Remove "note: " prefix from
scan-tree-dump directive.
* gcc.dg/vect/slp-perm-2.c: Likewise.
* gcc.dg/vect/slp-perm-3.c: Likewise.
* gcc.dg/vect/slp-perm-5.c: Likewise.
* gcc.dg/vect/slp-perm-6.c: Likewise.
* gcc.dg/vect/slp-perm-7.c: Likewise.
* gcc.dg/vect/slp-perm-8.c: Likewise.

From-SVN: r262346

re PR c++/84306 (Wrong overload selected with -std=c++17, explicit and {})

PR c++/84306
* g++.dg/overload/conv-op3.C: New test.

From-SVN: r262345

re PR middle-end/86202 (ICE in get_range_info calling an invalid memcpy() declaration)

PR middle-end/86202
* gimple-fold.c (size_must_be_zero_p): Check the type of the size.

* gcc.dg/Wint-conversion-2.c: New test.

From-SVN: r262344

PR c++/86378 - functional cast in noexcept-specifier.

* tree.c (strip_typedefs_expr) [TREE_LIST]: Fix iteration.

From-SVN: r262343

h8300.md (HSI, [...]): New mode iterators.

* config/h8300/h8300.md (HSI, QHSI, QHSIF): New mode iterators.
(shifts): New code iterator.
(movqi, movhi, movsi, movsf expanders): Consolidate into a single
expander.  Fix HImode handling on H8/SX.
(addqi3, addhi3, addsi3 expanders): Consolidate into a single expander.
(subqi3, subhi3, subsi3 expanders): Likewise.
(andqi3, andhi3, andsi3 expanders): Likewise.
(iorqi3, iorhi3, iorsi3 expanders): Likewise.
(xorqi3, xorhi3, xorsi3 expanders): Likewise.
(negqi2, neghi2, negsi2, negsf2 expanders): Likewise.
(one_cmplqi2, one_cmplhi2, one_cmplsi2): Likewise.
(zero_extendqihi2, zero_extendqisi2): Likewise.
(extendqihi2, extendqisi2): Likewise.
(rotlqi3, rotlhi3, rotlsi3): Likewise.
(neghi2_h8300, negsi2_h8300): Likewise for these patterns.
(rotlqi3_1, rotlhi3_1): Likewise.
(logicalhi3_sn, logicalsi3_sn): Likewise.
(logicalhi3, logicalsi3): Likewise.

From-SVN: r262342