rs6000.c (rs6000_gimple_fold_builtin): Add support for gimple-folding of vec_pack() and vec_unpack() intrinsics.

[gcc]

2018-08-13 Will Schmidt  <will_schmidt@vnet.ibm.com>

* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin):
Add support for gimple-folding of vec_pack() and vec_unpack()
intrinsics.

From-SVN: r263519

PR libstdc++/45093 avoid warnings for _M_destroy_node

PR libstdc++/45093
* include/bits/stl_tree.h (_Rb_tree::_M_destroy_node(_Link_type)):
Combine definitions to avoid --detect-odr-violations warning.

From-SVN: r263516

Minor optimisations in operator new(size_t, align_val_t)

* libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Use
__is_pow2 to check for valid alignment. Avoid branching when rounding
size to multiple of alignment.

From-SVN: r263515

Add <bit> and <version> to freestanding headers

* include/Makefile.am: Install <bit> and <version> for freestanding.
* include/Makefile.in: Regenerate.
* testsuite/17_intro/freestanding.cc: Check for <bit> and <version>.

From-SVN: r263514

Revert "libstdc++-v3: Have aligned_alloc() on Newlib"

This reverts commit r263461 / 2e920cd849b3cf0a72df4f172e27676a3e70b73f
because aligned_alloc is not defined for baremetal newlib targets, see
https://gcc.gnu.org/ml/libstdc++/2018-08/msg00065.html

Revert
2018-08-10  Sebastian Huber  <sebastian.huber@embedded-brains.de>

PR target/85904
* configure.ac: Define HAVE_ALIGNED_ALLOC if building for
Newlib.
* configure: Regenerate.

From-SVN: r263513

rs6000.c (rs6000_builtin_valid_without_lhs): Add vec_xst variants to the list.

[gcc]

2018-08-13 Will Schmidt <will_schmidt@vnet.ibm.com>

* config/rs6000/rs6000.c (rs6000_builtin_valid_without_lhs): Add
vec_xst variants to the list.
(rs6000_gimple_fold_builtin): Add support for folding unaligned
vector loads and stores.

From-SVN: r263512

PR tree-optimization/71625 - missing strlen optimization on different array initialization style

gcc/c/ChangeLog:

PR tree-optimization/71625
* c-parser.c (c_parser_declaration_or_fndef): Call
braced_list_to_string.

gcc/c-family/ChangeLog:

PR tree-optimization/71625
* c-common.c (braced_list_to_string): New function.
* c-common.h (braced_list_to_string): Declare it.

gcc/cp/ChangeLog:

PR tree-optimization/71625
* decl.c (check_initializer):  Call braced_list_to_string.
(eval_check_narrowing): New function.
* gcc/cp/typeck2.c (digest_init_r): Accept strings literals
as initilizers for all narrow character types.

gcc/testsuite/ChangeLog:

PR tree-optimization/71625

* g++.dg/init/string2.C: New test.
* g++.dg/init/string3.C: New test.
* g++.dg/init/string4.C: New test.
* gcc.dg/init-string-3.c: New test.
* gcc.dg/strlenopt-55.c: New test.
* gcc.dg/strlenopt-56.c: New test.

From-SVN: r263511

P0806R2 - Deprecate implicit capture of this via [=]

P0806R2 - Deprecate implicit capture of this via [=]
* lambda.c (add_default_capture): Formatting fixes.  Warn about
deprecated implicit capture of this via [=].

* g++.dg/cpp2a/lambda-this1.C: New test.
* g++.dg/cpp2a/lambda-this2.C: New test.
* g++.dg/cpp2a/lambda-this3.C: New test.

From-SVN: r263508

re PR c++/86915 (Segmentation fault for an array of auto in template parameter)

PR c++/86915
* decl.c (create_array_type_for_decl): Handle null name.

* g++.dg/diagnostic/auto1.C: New test.

From-SVN: r263507

config.gcc (rs6000-ibm-aix4.x): Delete.

        * config.gcc (rs6000-ibm-aix4.x): Delete.
        (rs6000-ibm-aix5.1): Delete.
        (rs6000-ibm-aix5.2): Delete.
        (rs6000-ibm-aix5.3): Delete.
        * config/rs6000/aix43.h: Delete.
        * config/rs6000/aix51.h: Delete.
        * config/rs6000/aix52.h: Delete.
        * config/rs6000/t-aix43: Delete.

From-SVN: r263506

[nvptx] Use CUDA driver API to select default runtime launch geometry

The CUDA driver API starting version 6.5 offers a set of runtime functions to
calculate several occupancy-related measures, as a replacement for the occupancy
calculator spreadsheet.

This patch adds a heuristic for default runtime launch geometry, based on the
new runtime function cuOccupancyMaxPotentialBlockSize.

Build on x86_64 with nvptx accelerator and ran libgomp testsuite.

2018-08-13  Cesar Philippidis  <cesar@codesourcery.com>
    Tom de Vries  <tdevries@suse.de>

PR target/85590
* plugin/cuda/cuda.h (CUoccupancyB2DSize): New typedef.
(cuOccupancyMaxPotentialBlockSize): Declare.
* plugin/cuda-lib.def (cuOccupancyMaxPotentialBlockSize): New
CUDA_ONE_CALL_MAYBE_NULL.
* plugin/plugin-nvptx.c (CUDA_VERSION < 6050): Define
CUoccupancyB2DSize and declare
cuOccupancyMaxPotentialBlockSize.
(nvptx_exec): Use cuOccupancyMaxPotentialBlockSize to set the
default num_gangs and num_workers when the driver supports it.

Co-Authored-By: Tom de Vries <tdevries@suse.de>
From-SVN: r263505

S/390: Factor out constant pool ref decomposition

gcc/ChangeLog:

2018-08-13  Ilya Leoshkevich  <iii@linux.ibm.com>

* config/s390/s390.c (s390_decompose_constant_pool_ref):
        New function.
(s390_decompose_address): Factor out constant pool ref
        decomposition.

From-SVN: r263504

Daily bump.

From-SVN: r263503

re PR fortran/66679 ([OOP] ICE with class(*) and transfer)

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/66679
* trans-intrinsic.c (gfc_conv_intrinsic_transfer): Class array
elements are returned as references to the data element. Get
the class expression by stripping back the references. Use this
for the element size.

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/66679
* gfortran.dg/transfer_class_3.f90: New test.

From-SVN: r263499

[NDS32] Change return type of predicator to bool.

gcc/
* config/nds32/nds32-predicates.c
(nds32_can_use_bclr_p): Change return type as bool.
(nds32_can_use_bset_p): Ditto.
(nds32_can_use_btgl_p): Ditto.
(nds32_can_use_bitci_p): Ditto.
* config/nds32/nds32-protos.h
(nds32_can_use_bclr_p): Change declaration.
(nds32_can_use_bset_p): Ditto.
(nds32_can_use_btgl_p): Ditto.
(nds32_can_use_bitci_p): Ditto.

From-SVN: r263497

[NDS32] Add new option: -msched-prolog-epilog

gcc/
* config/nds32/nds32.c (nds32_expand_prologue, nds32_expand_epilogue):
Support -msched-prolog-epilog option.
* config/nds32/nds32.opt (msched-prolog-epilog): New option.

From-SVN: r263496

[NDS32] Enable -malways-align by default at -O1 and above.

gcc/
* common/config/nds32/nds32-common.c
(nds32_option_optimization_table): Enalbe -malways-align.

From-SVN: r263495

re PR fortran/86906 (erroneous name clash with renaming in use statement)

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/86906
* resolve.c (resolve_fl_variable_derived): Check if the derived
type is use associated before checking for the host association
error.

2018-08-12  Paul Thomas  <pault@gcc.gnu.org>

PR fortran/86906
* gfortran.dg/use_rename_9.f90: New test.

From-SVN: r263494

[NDS32] Implement more C ISR extension.

gcc/
* config.gcc (nds32*): Add nds32_isr.h and nds32_init.inc in
extra_headers.
* common/config/nds32/nds32-common.c (nds32_handle_option): Handle
OPT_misr_secure_ case.
* config/nds32/nds32-isr.c: Implementation of backward compatibility.
* config/nds32/nds32-protos.h (nds32_isr_function_critical_p): New.
* config/nds32/nds32.c (nds32_attribute_table): Add critical and
secure attribute.
* config/nds32/nds32.h (nds32_isr_nested_type): Add NDS32_CRITICAL.
(nds32_isr_info): New field security_level.
(TARGET_ISR_VECTOR_SIZE_4_BYTE): New macro.
* config/nds32/nds32.md (return_internal): Consider critical attribute.
* config/nds32/nds32.opt (misr-secure): New option.
* config/nds32/nds32_init.inc: New file.
* config/nds32/nds32_isr.h: New file.

libgcc/
* config/nds32/t-nds32-isr: Rearrange object dependency.
* config/nds32/initfini.c: Add dwarf2 unwinding support.
* config/nds32/isr-library/adj_intr_lvl.inc: Consider new extensions
and registers usage.
* config/nds32/isr-library/excp_isr.S: Ditto.
* config/nds32/isr-library/intr_isr.S: Ditto.
* config/nds32/isr-library/reset.S: Ditto.
* config/nds32/isr-library/restore_all.inc: Ditto.
* config/nds32/isr-library/restore_mac_regs.inc: Ditto.
* config/nds32/isr-library/restore_partial.inc: Ditto.
* config/nds32/isr-library/restore_usr_regs.inc: Ditto.
* config/nds32/isr-library/save_all.inc: Ditto.
* config/nds32/isr-library/save_mac_regs.inc: Ditto.
* config/nds32/isr-library/save_partial.inc: Ditto.
* config/nds32/isr-library/save_usr_regs.inc: Ditto.
* config/nds32/isr-library/vec_vid*.S: Consider 4-byte vector size.

From-SVN: r263493

Daily bump.

From-SVN: r263492

pa.md (UNSPEC_MEMORY_BARRIER): New unspec enum.

gcc
* config/pa/pa.md (UNSPEC_MEMORY_BARRIER): New unspec enum.
Update comment for atomic instructions.
(atomic_storeqi, atomic_storehi, atomic_storesi, atomic_storesf,
atomic_loaddf, atomic_loaddf_1, atomic_storedf, atomic_storedf_1):
Remove.
(atomic_loaddi): Revise fence expansion to only emit fence prior to
load for __ATOMIC_SEQ_CST model.
(atomic_loaddi_1): Remove float register target.
(atomic_storedi): Handle CONST_INT values.
(atomic_storedi_1): Remove float register source.  Add special case
for zero value.
(memory_barrier): New expander and insn.

libgcc
* config/pa/linux-atomic.c: Update comment.
(FETCH_AND_OP_2, OP_AND_FETCH_2, FETCH_AND_OP_WORD, OP_AND_FETCH_WORD,
COMPARE_AND_SWAP_2, __sync_val_compare_and_swap_4,
SYNC_LOCK_TEST_AND_SET_2, __sync_lock_test_and_set_4): Use
__ATOMIC_RELAXED for atomic loads.
(SYNC_LOCK_RELEASE_1): New define.  Use __sync_synchronize() and
unordered store to release lock.
(__sync_lock_release_8): Likewise.
(SYNC_LOCK_RELEASE_2): Remove define.

From-SVN: r263488

re PR tree-optimization/86835 (Bogus "is used uninitialized" warning with -ffast-math)

PR tree-optimization/86835
* tree-ssa-math-opts.c (insert_reciprocals): Even when inserting
new_stmt after def_gsi, make sure to insert new_square_stmt after
that stmt, not 2 stmts before it.

* gcc.dg/pr86835.c: New test.

From-SVN: r263487

PR c++/86728 - C variadic generic lambda.

* parser.c (cp_parser_parameter_declaration): Don't turn 'auto' into
a pack if it's followed by a declarator-id.

From-SVN: r263484

Daily bump.

From-SVN: r263483

PR libstdc++/68210 adjust operator new and delete for LWG 206

Ensure that nothrow versions of new and delete call the ordinary
versions of new or delete, instead of calling malloc or free directly.

These files are all compiled with -std=gnu++14 so can use noexcept and
nullptr to make the code more readable.

PR libstdc++/68210
* doc/xml/manual/intro.xml: Document LWG 206 change.
* libsupc++/del_op.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opa.cc: Likewise.
* libsupc++/del_opant.cc: Likewise.
* libsupc++/del_opnt.cc: Likewise. Call operator delete(ptr) instead
of free(ptr).
* libsupc++/del_ops.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opsa.cc: Likewise.
* libsupc++/del_opva.cc: Likewise.
* libsupc++/del_opvant.cc: Likewise.
* libsupc++/del_opvnt.cc: Likewise. Call operator delete[](ptr)
instead of operator delete(ptr).
* libsupc++/del_opvs.cc: Replace _GLIBCXX_USE_NOEXCEPT with noexcept.
* libsupc++/del_opvsa.cc: Likewise.
* libsupc++/new_op.cc: Use __builtin_expect in check for zero size.
* libsupc++/new_opa.cc: Use nullptr instead of literal 0.
* libsupc++/new_opant.cc: Likewise. Replace _GLIBCXX_USE_NOEXCEPT
with noexcept.
* libsupc++/new_opnt.cc: Likewise. Call operator new(sz) instead of
malloc(sz).
* libsupc++/new_opvant.cc: Use nullptr and noexcept.
* libsupc++/new_opvnt.cc: Likewise. Call operator new[](sz) instead of
operator new(sz, nothrow).
* testsuite/18_support/new_nothrow.cc: New test.

From-SVN: r263478

Fix formatting in ChangeLog

From-SVN: r263476

re PR fortran/57160 (short-circuit IF only with -ffrontend-optimize)

2018-08-10  Janus Weil  <janus@gcc.gnu.org>

PR fortran/57160
* invoke.texi (frontend-optimize): Mention short-circuiting.
* options.c (gfc_post_options): Disable -ffrontend-optimize with -Og.
* resolve.c (resolve_operator): Warn about short-circuiting only with
-ffrontend-optimize.
* trans-expr.c (gfc_conv_expr_op): Use short-circuiting operators only
with -ffrontend-optimize. Without that flag, make sure that both
operands are evaluated.

2018-08-10  Janus Weil  <janus@gcc.gnu.org>

PR fortran/57160
* gfortran.dg/actual_pointer_function_1.f90: Fix invalid test case.
* gfortran.dg/inline_matmul_23.f90: Add option "-ffrontend-optimize".
* gfortran.dg/short_circuiting_2.f90: New test case.
* gfortran.dg/short_circuiting_3.f90: New test case.

From-SVN: r263471

Remove not needed __builtin_expect due to malloc predictor.

2018-08-10  Martin Liska  <mliska@suse.cz>

* libsupc++/new_op.cc (new): Remove __builtin_expect as malloc
        predictor can handle that.
* libsupc++/new_opa.cc: Likewise.
* libsupc++/new_opnt.cc (new): Likewise.

From-SVN: r263470

Fix wrongly removed line.

2018-08-10  Martin Liska  <mliska@suse.cz>

* MAINTAINERS: Revert change in previous commit and
        join lines.

From-SVN: r263469

Fix extra line in MAINTAINERS.

2018-08-10  Martin Liska  <mliska@suse.cz>

* MAINTAINERS: Remove extra line.

From-SVN: r263468

i386: do not use SImode mul-highpart on 64-bit (PR 82418)

PR target/82418
* config/i386/i386.md (<s>mul<mode>3_highpart): Use DWIH mode iterator
instead of SWI48.

testsuite/
* gcc.target/i386/pr82418.c: New test.

From-SVN: r263467

Introduce __builtin_expect_with_probability (PR target/83610).

2018-08-10  Martin Liska  <mliska@suse.cz>

        PR target/83610
* builtin-types.def (BT_FN_LONG_LONG_LONG_DOUBLE): Add new
        function type.
* builtins.c (expand_builtin_expect_with_probability):
        New function.
(expand_builtin_expect_with_probability): New function.
(build_builtin_expect_predicate): Add new argumnet probability
        for BUILT_IN_EXPECT_WITH_PROBABILITY.
(fold_builtin_expect):
(fold_builtin_2):
(fold_builtin_3):
* builtins.def (BUILT_IN_EXPECT_WITH_PROBABILITY):
* builtins.h (fold_builtin_expect): Set new argument.
* doc/extend.texi: Document __builtin_expect_with_probability.
* doc/invoke.texi: Likewise.
* gimple-fold.c (gimple_fold_call): Pass new argument.
* ipa-fnsummary.c (find_foldable_builtin_expect): Handle
        also BUILT_IN_EXPECT_WITH_PROBABILITY.
* predict.c (get_predictor_value): New function.
(expr_expected_value): Add new argument probability. Assume
        that predictor and probability are always non-null.
(expr_expected_value_1): Likewise.  For __builtin_expect and
        __builtin_expect_with_probability set probability.  Handle
        combination in binary expressions.
(tree_predict_by_opcode): Simplify code by simply calling
        get_predictor_value.
(pass_strip_predict_hints::execute): Add handling of
        BUILT_IN_EXPECT_WITH_PROBABILITY.
* predict.def (PRED_BUILTIN_EXPECT_WITH_PROBABILITY): Add
        new predictor.
* tree.h (DECL_BUILT_IN_P): New function.
2018-08-10  Martin Liska  <mliska@suse.cz>

        PR target/83610
* gcc.dg/predict-17.c: New test.
* gcc.dg/predict-18.c: New test.
* gcc.dg/predict-19.c: New test.

From-SVN: r263466

Strip only selected predictors after early tree passes (PR tree-optimization/85799).

2018-08-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/85799
* passes.def: Add argument for pass_strip_predict_hints.
* predict.c (class pass_strip_predict_hints): Add new argument
        early_p.
(strip_predictor_early): New function.
(pass_strip_predict_hints::execute): Call the function to
        strip predictors.
(strip_predict_hints): New function.
* predict.def: Fix comment.
2018-08-10  Martin Liska  <mliska@suse.cz>

        PR tree-optimization/85799
* gcc.dg/pr85799.c: New test.

From-SVN: r263465

Clarify source of tm.texi to copy for GFDL grant

When tm.texi.in is updated in the source tree, the following message
gets displayed:

Verify that you have permission to grant a GFDL license for all
new text in tm.texi, then copy it to <gcc src dir>/gcc/doc/tm.texi.

Having been myself and some colleagues confused several time by that
message as to what tm.texi to copy, I think it would be clearer to
indicate the absolute path for the source as well. This patch achieves
that.

2018-08-10  Thomas Preud'homme  <thomas.preudhomme@linaro.org>

    gcc/
    * Makefile.in: Clarify which tm.texi to copy over to assert the
    right to grant a GFDL license for all.

From-SVN: r263464

libstdc++-v3: Have aligned_alloc() on Newlib

While building for Newlib, some configure checks must be hard coded.
The aligned_alloc() is supported since 2015 in Newlib.

libstdc++-v3/

PR target/85904
* configure.ac: Define HAVE_ALIGNED_ALLOC if building for
Newlib.
* configure: Regenerate.

From-SVN: r263461

Daily bump.

From-SVN: r263460

Define aliases for containers using polymorphic_allocator

These aliases are placed in the top-level header, e.g. <vector> not
<bits/stl_vector.h>. This ensures that they refer to whichever of
std::vector or __debug::vector or __profile::vector is in use when the
header is included.

* include/std/deque (std::pmr::deque): Declare alias.
* include/std/forward_list (std::pmr::forward_list): Likewise.
* include/std/list (std::pmr::list): Likewise.
* include/std/map (std::pmr::map, std::pmr::multimap): Likewise.
* include/std/regex (std::pmr::match_results, std::pmr::cmatch)
(std::pmr::smatch, std::pmr::wcmatch, std::pmr::wsmatch): Likewise.
* include/std/set (std::pmr::set, std::pmr::multiset): Likewise.
* include/std/string (std::pmr::basic_string, std::pmr::string)
(std::pmr::u16string, std::pmr::u32string, std::pmr::wstring):
Likewise.
* include/std/unordered_map (std::pmr::unordered_map)
(std::pmr::unordered_multimap): Likewise.
* include/std/unordered_set (std::pmr::unordered_set)
(std::pmr::unordered_multiset): Likewise.
* include/std/vector (std::pmr::vector): Likewise.
* testsuite/21_strings/basic_string/types/pmr_typedefs.cc: New test.
* testsuite/23_containers/deque/types/pmr_typedefs.cc: New test.
* testsuite/23_containers/forward_list/pmr_typedefs.cc: New test.
* testsuite/23_containers/list/pmr_typedefs.cc: New test.
* testsuite/23_containers/map/pmr_typedefs.cc: New test.
* testsuite/23_containers/multimap/pmr_typedefs.cc: New test.
* testsuite/23_containers/multiset/pmr_typedefs.cc: New test.
* testsuite/23_containers/set/pmr_typedefs.cc: New test.
* testsuite/23_containers/unordered_map/pmr_typedefs.cc: New test.
* testsuite/23_containers/unordered_multimap/pmr_typedefs.cc: New
test.
* testsuite/23_containers/unordered_multiset/pmr_typedefs.cc: New
test.
* testsuite/23_containers/unordered_set/pmr_typedefs.cc: New test.
* testsuite/23_containers/vector/pmr_typedefs.cc: New test.
* testsuite/28_regex/match_results/pmr_typedefs.cc: New test.

From-SVN: r263456

m68k.c (m68k_adjust_decorated_operand): Remove unused variable.

* config/m68k/m68k.c (m68k_adjust_decorated_operand): Remove
unused variable.

From-SVN: r263455

re PR middle-end/86897 (gcc.dg/uninit-suppress_2.c FAILs)

PR middle-end/86897
* gcc.dg/uninit-suppress_2.c: Disable DOM.

From-SVN: r263454

Add missing PR to Nios fix for CVE-2017-5753

I nearly missed this patch for my accumulated back-porting list since
it didn't have the PR number in it.

Just adding it so that I can track things properly.  The original
commit landed as r263301.

From-SVN: r263453

m68k-protos.h (m68k_final_prescan_insn): Remove prototype.

* config/m68k/m68k-protos.h (m68k_final_prescan_insn): Remove
prototype.

From-SVN: r263452

Allow inner-loop reductions with variable-length vectors

While working on PR 86871, I noticed we were being overly restrictive
when handling variable-length vectors.  For:

  for (i : ...)
    {
      res = ...;
      for (j : ...)
        res op= ...;
      a[i] = res;
    }

we don't need a reduction operation (although we do for double
reductions like:

  res = ...;
  for (i : ...)
    for (j : ...)
      res op= ...;
  a[i] = res;

which must still be rejected).

2018-08-08  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
* tree-vect-loop.c (vectorizable_reduction): Allow inner-loop
reductions for variable-length vectors.

gcc/testsuite/
* gcc.target/aarch64/sve/reduc_8.c: New test.

From-SVN: r263451

diagnostics: add line numbers to source (PR other/84889)

This patch adds a left margin to the lines of source (and annotations)
printed by diagnostic_show_locus, so that e.g. rather than:

test.c: In function 'test':
test.c:12:15: error: 'struct foo' has no member named 'm_bar'; did you mean 'bar'?
   return ptr->m_bar;
               ^~~~~
               bar

we print:

test.c: In function 'test':
test.c:12:15: error: 'struct foo' has no member named 'm_bar'; did you mean 'bar'?
12 |   return ptr->m_bar;
   |               ^~~~~
   |               bar

Similarly, for a multiline case (in C++ this time), this:

bad-binary-ops.C: In function 'int test_2()':
bad-binary-ops.C:26:4: error: no match for 'operator+' (operand types are 's' and 't')
   return (some_function ()
           ~~~~~~~~~~~~~~~~
    + some_other_function ());
    ^~~~~~~~~~~~~~~~~~~~~~~~

becomes:

bad-binary-ops.C: In function 'int test_2()':
bad-binary-ops.C:26:4: error: no match for 'operator+' (operand types are 's' and 't')
25 |   return (some_function ()
   |           ~~~~~~~~~~~~~~~~
26 |    + some_other_function ());
   |    ^~~~~~~~~~~~~~~~~~~~~~~~

I believe this slightly improves the readability of the output, in that it:
- distinguishes between the user's source code vs the annotation lines
  that we're adding (the underlinings and fix-it hints here)
- shows the line numbers in another place (potentially helpful for
  multiline diagnostics, where the user can see the line numbers directly,
  rather than have to figure them out relative to the caret: in the 2nd
  example, note how the diagnostic is reported at line 26, but the first
  line printed is actually line 25)

I'm not sure that this is the precise format we want to go with [1], but
I think it's an improvement over the status quo, and we're in stage 1
of gcc 9, so there's plenty of time to shake out issues.

I've turned it on by default; it can be disabled via
-fno-diagnostics-show-line-numbers (it's also turned off in the testsuite, to
avoid breaking numerous existing test cases).

[1] Some possible variants:
  - maybe just "LL|" rather than "LL | "
  - maybe ':' rather than '|'
  - maybe we should have some leading indentation, to better split up
    the diagnostics visually via the left-hand column
  - etc

gcc/ChangeLog:
PR other/84889
* common.opt (fdiagnostics-show-line-numbers): New option.
* diagnostic-show-locus.c (class layout): Add fields
"m_show_line_numbers_p" and "m_linenum_width";
(num_digits): New function.
(test_num_digits): New function.
(layout::layout): Initialize new fields.  Update m_x_offset
logic to handle any left margin.
(layout::print_source_line): Print line number when requested.
(layout::start_annotation_line): New member function.
(layout::print_annotation_line): Call it.
(layout::print_leading_fixits): Likewise.
(layout::print_trailing_fixits): Likewise.  Update calls to
move_to_column for new parameter.
(layout::get_x_bound_for_row): Add "add_left_margin" param and use
it to potentially call start_annotation_line.
(layout::show_ruler): Call start_annotation_line.
(selftest::test_line_numbers_multiline_range): New selftest.
(selftest::diagnostic_show_locus_c_tests): Call test_num_digits
and selftest::test_line_numbers_multiline_range.
* diagnostic.c (diagnostic_initialize): Initialize
show_line_numbers_p.
* diagnostic.h (struct diagnostic_context): Add field
"show_line_numbers_p".
* doc/invoke.texi (Diagnostic Message Formatting Options): Add
-fno-diagnostics-show-line-numbers.
* dwarf2out.c (gen_producer_string): Add
OPT_fdiagnostics_show_line_numbers to the ignored options.
* lto-wrapper.c (merge_and_complain): Likewise to the "pick
one setting" options.
(append_compiler_options): Likewise to the dropped options.
(append_diag_options): Likewise to the passed-on options.
* opts.c (common_handle_option): Handle the new option.
* toplev.c (general_init): Set up global_dc->show_line_numbers_p.

gcc/testsuite/ChangeLog:
PR other/84889
* gcc.dg/plugin/diagnostic-test-show-locus-bw-line-numbers.c: New
test.
* gcc.dg/plugin/diagnostic-test-show-locus-color-line-numbers.c:
New test.
* gcc.dg/plugin/plugin.exp (plugin_test_list): Add the new tests.
* lib/prune.exp: Add -fno-diagnostics-show-line-numbers to
TEST_ALWAYS_FLAGS.

From-SVN: r263450

extend.texi (PowerPC AltiVec Built-in Functions Available on ISA 2.07): Correct spelling of bcdsub to be __builtin_bcdsub.

gcc/ChangeLog:

2018-08-09  Kelvin Nilsen  <kelvin@gcc.gnu.org>

* doc/extend.texi (PowerPC AltiVec Built-in Functions Available on
ISA 2.07): Correct spelling of bcdsub to be __builtin_bcdsub.  Add
third argument of type "const signed char" to descriptions of
__builtin_bcdadd, __builtin_bcdadd_lt, __builtin_bcdadd_eq,
__builtin_bcdadd_gt, __builtin_bcdadd_ov, __builtin_bcdsub,
__builtin_bcdsub_lt, __builtin_bcdsub_eq, __builtin_bcdsub_gt,
__builtin_bcdsub_ov functions.

From-SVN: r263449

Restore flow_bb_inside_loop_p tests (PR 86858)

The series to remove vinfo_for_stmt also removed tests of
flow_bb_inside_loop_p if the call was simply testing whether the
statement was in the vectorisation region.  I'd tried to keep calls
that were testing whether the statement was in a particular loop
(inner or outer), but messed up in vect_is_simple_reduction and
removed calls that were actually needed.  This patch restores them.

I double-checked the other removed calls and I think these are
the only ones affected.

2018-08-08  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
PR tree-optimization/86858
* tree-vect-loop.c (vect_is_simple_reduction): Restore
flow_bb_inside_loop_p calls.

gcc/testsuite/
PR tree-optimization/86858
* gcc.dg/vect/pr86858.c: New test.

From-SVN: r263448

Fix invalid assumption in vect_transform_stmt (PR 86871)

The handling of outer-loop uses of inner-loop definitions assumed
that anything that wasn't a PHI would be a gassign.  It's also
possible for it to be a gcall.

2018-08-08  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
PR tree-optimization/86871
* tree-vect-stmts.c (vect_transform_stmt): Use gimple_get_lhs
instead of gimple_assign_lhs.

gcc/testsuite/
PR tree-optimization/86871
* gcc.dg/vect/pr86871.c: New test.

From-SVN: r263447

aarch64 - PR target/86887 Fix missing register constraints in carryin patterns

Some of the carryin insn patterns are missing a register constraint.
That means that the register allocator can pick practically anything
to hold that value, including memory locations, or registers of the
wrong class.

PR target/86887
* config/aarch64/aarch64.md (add<mode>3_carryinC_zero): Add missing
register constraint to operand 0.
(add<mode>3_carryinC): Likewise.
(add<mode>3_carryinV_zero, add<mode>3_carryinV): Likewise.

From-SVN: r263446

p784.C: Add -fpermissive.

2018-08-09  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.old-deja/g++.mike/p784.C: Add -fpermissive.

From-SVN: r263445

Remove extra line in common.opt (PR c/86895).

2018-08-09  Martin Liska  <mliska@suse.cz>

        PR c/86895
* common.opt: Remove extra line.

From-SVN: r263444

S/390: Fix target attribute tests

These broke after removing G5 and G6 CPUs from the processor
enumeration.

gcc/testsuite/ChangeLog:

2018-08-09  Andreas Krebbel  <krebbel@linux.ibm.com>

* gcc.target/s390/target-attribute/tattr-arch-tune-1.c: Decrement
arch and tune numbers by 2.
* gcc.target/s390/target-attribute/tattr-arch-tune-2.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-1.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-10.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-11.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-12.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-13.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-14.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-15.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-16.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-17.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-18.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-19.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-2.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-20.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-21.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-22.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-23.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-24.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-25.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-26.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-27.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-28.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-29.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-3.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-30.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-31.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-32.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-4.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-5.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-6.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-7.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-8.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m31-9.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-1.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-10.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-11.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-12.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-13.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-14.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-15.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-16.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-17.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-18.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-19.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-2.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-20.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-21.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-22.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-23.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-24.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-25.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-26.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-27.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-28.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-29.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-3.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-30.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-31.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-32.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-33.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-4.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-5.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-6.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-7.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-8.c: Likewise.
* gcc.target/s390/target-attribute/tattr-m64-9.c: Likewise.

From-SVN: r263443

Fix typos in params.def.

2018-08-09  Martin Liska  <mliska@suse.cz>

* params.def (PARAM_ALIGN_LOOP_ITERATIONS): Remove double dots
        at the end of a line, make first letter capital and end up
        a sentence with a dot.
(PARAM_LOOP_INTERCHANGE_STRIDE_RATIO): Likewise.
(PARAM_LOOP_BLOCK_TILE_SIZE): Likewise.
(PARAM_GRAPHITE_MAX_NB_SCOP_PARAMS): Likewise.
(PARAM_GRAPHITE_MAX_ARRAYS_PER_SCOP): Likewise.
(PARAM_MAX_ISL_OPERATIONS): Likewise.
(PARAM_GRAPHITE_ALLOW_CODEGEN_ERRORS): Likewise.
(PARAM_PROFILE_FUNC_INTERNAL_ID): Likewise.
(PARAM_INDIR_CALL_TOPN_PROFILE): Likewise.
(PARAM_SLP_MAX_INSNS_IN_BB): Likewise.
(PARAM_IPA_CP_EVAL_THRESHOLD): Likewise.
(PARAM_IPA_CP_RECURSION_PENALTY): Likewise.
(PARAM_IPA_CP_SINGLE_CALL_PENALTY): Likewise.
(PARAM_IPA_CP_LOOP_HINT_BONUS): Likewise.
(PARAM_IPA_CP_ARRAY_INDEX_HINT_BONUS): Likewise.
(PARAM_TREE_REASSOC_WIDTH): Likewise.
(PARAM_HSA_GEN_DEBUG_STORES): Likewise.
(PARAM_MAX_SPECULATIVE_DEVIRT_MAYDEFS): Likewise.
(PARAM_MAX_VRP_SWITCH_ASSERTIONS): Likewise.

From-SVN: r263442

S/390: Fix PR84332 ICE with stack clash protection

Our implementation of the stack probe requires the probe interval to
be used as displacement in an address operand.  The maximum probe
interval currently is 64k.  This would exceed short displacements.
Trim that value down to 4k if that happens.  This might result in too
many probes being generated only on the oldest supported machine level
z900.

gcc/ChangeLog:

2018-08-09  Andreas Krebbel  <krebbel@linux.ibm.com>

PR target/84332
* config/s390/s390.c (s390_option_override_internal): Reduce the
stack-clash-protection-probe-interval param if it would be too big
for z900.

gcc/testsuite/ChangeLog:

2018-08-09  Andreas Krebbel  <krebbel@linux.ibm.com>

PR target/84332
* gcc.target/s390/pr84332.c: New testcase.

From-SVN: r263441

Daily bump.

From-SVN: r263439

2018-08-08  François Dumont  <fdumont@gcc.gnu.org>

* include/bits/stl_algo.h
(__rotate(_Ite, _Ite, _Ite, forward_iterator_tag))
(__rotate(_Ite, _Ite, _Ite, bidirectional_iterator_tag))
(__rotate(_Ite, _Ite, _Ite, random_access_iterator_tag)): Move code duplication...
(rotate(_Ite, _Ite, _Ite)): ...here.
(__stable_partition_adaptive(_FIt, _FIt, _Pred, _Dist, _Pointer, _Dist)):
Simplify rotate call.
(__rotate_adaptive(_BIt1, _BIt1, _BIt1, _Dist, _Dist, _Bit2, _Dist)):
Likewise.
(__merge_without_buffer(_BIt, _BIt, _BIt, _Dist, _Dist, _Comp)):
Likewise.

From-SVN: r263433

m68k: handle more cases of TLS symbols with offset

PR target/46179
* config/m68k/m68k.h (FINAL_PRESCAN_INSN): Don't define.
* config/m68k/m68k.c (handle_move_double): Don't call
m68k_final_prescan_insn.
(m68k_adjust_decorated_operand): Renamed from
m68k_final_prescan_insn, remove first and third operand and
simplify.
(print_operand): Call it.
(print_operand_address): Call it.

PR target/46179
* gcc.target/m68k/tls-dimode.c: New file.

From-SVN: r263432

[PATCH] line-map include-from representation

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00554.html
Make linemap::included_from a location
libcpp/
* include/line-map.h (struct line_map_ordinary): Replace
included_from map index with included_at source_location.
(ORDINARY_MAP_INCLUDER_FILE_INDEX): Delete.
(LAST_SOURCE_LINE_LOCATION): Delete.
(LAST_SOURCE_LINE, LAST_SOURCE_COLUMN): Delete.
(linemap_included_from): New.
(linemap_included_from_linemap): Declare.
(MAIN_FILE_P): Adjust.
* line-map.c (linemap_included_from_linemap): New.
(lonemap_check_files_exited): Use linemap_included_at.
(linemap_add): Adjust inclusion setting.
(linemap_dump, linemap_dump_location): Adjust.
* directives.c (do_linemarker): Use linemap_included_at.
gcc/
* diagnostic.c (diagnostic_report_current_module): Use
linemap_included_from & linemap_included_from_linemap.
gcc/c-family/
* c-common.c (try_to_locate_new_include_inertion_point): Use
linemap_included_from_linemap.
* c-lex.c (fe_file_change): Use linemap_included_from.
* c-ppoutput.c (pp_file_change): Likewise.
gcc/fortran/
* cpp.c (cb_file_change): Use linemap_included_from.
gcc/testsuite/
* c-c++-common/inc-from-1a.h, c-c++-common/inc-from-1b.h,
c-c++-common/inc-from-1.c: New

From-SVN: r263429

Prevent internal aligned_alloc clashing with libc version

If configure fails to detect aligned_alloc we will try to define our
own in new_opa.cc but that could clash with the libcversion in
<stdlib.h>. Use a namespace to keep them distinct.

* libsupc++/new_opa.cc (aligned_alloc): Declare inside namespace to
avoid clashing with an ::aligned_alloc function that was not detected
by configure.

From-SVN: r263409

[libgomp, nvptx] Fall back to cuLinkAddData/cuLinkCreate if _v2 not found

Cuda driver api functions cuLinkAddData and cuLinkCreate are available starting
version 5.5.  In version 6.5, they are remapped onto _v2 versions.

The dlopen interface of the libgomp nvptx plugin uses the _v2 versions, so it
won't work with a cuda driver with driver api version lower than 6.5.

This patch fixes the problem by testing for the presence of the _v2 versions,
and falling back to the original versions in case of absence of the _v2
versions.

Build on x86_64 with nvptx accelerator and reg-tested libgomp, both with and
without --without-cuda-driver.

2018-08-08  Tom de Vries  <tdevries@suse.de>

* plugin/cuda-lib.def (cuLinkAddData_v2, cuLinkCreate_v2): Declare using
CUDA_ONE_CALL_MAYBE_NULL.
* plugin/plugin-nvptx.c (cuLinkAddData, cuLinkCreate): Undef and declare.
(cuLinkAddData_v2, cuLinkCreate_v2): Declare.
(link_ptx): Fall back to cuLinkAddData/cuLinkCreate if the _v2 versions
are not found.

From-SVN: r263408

[libgomp, nvptx] Allow cuGetErrorString to be NULL

Cuda driver api function cuGetErrorString is available in version 6.0 and
higher.

Currently, when the driver that is used does not contain this function, the
libgomp nvptx plugin will not build (PLUGIN_NVPTX_DYNAMIC == 0) or run
(PLUGIN_NVPTX_DYNAMIC == 1).

This patch fixes this problem by testing for the presence of the function, and
handling absence.

Build on x86_64 with nvptx accelerator and reg-tested libgomp, both with and
without --without-cuda-driver.

2018-08-08  Tom de Vries  <tdevries@suse.de>

* plugin/cuda-lib.def (cuGetErrorString): Use CUDA_ONE_CALL_MAYBE_NULL.
* plugin/plugin-nvptx.c (cuda_error): Handle if cuGetErrorString is not
present.

From-SVN: r263407

[libgomp, nvptx] Remove hard-coded const in nvptx_open_device

CU_DEVICE_ATTRIBUTE_MAX_REGISTERS_PER_MULTIPROCESSOR is defined in cuda driver
api version 6.0 and higher.

Currently nvptx_open_device uses a hard-coded constant instead.

This patch fixes that by:
- defining CU_DEVICE_ATTRIBUTE_MAX_REGISTERS_PER_MULTIPROCESSOR to the hardcoded
  constant at toplevel, if not present in cuda.h, and
- using CU_DEVICE_ATTRIBUTE_MAX_REGISTERS_PER_MULTIPROCESSOR in nvptx_open_device

Build on x86_64 with nvptx accelerator and reg-tested libgomp.

2018-08-08  Tom de Vries  <tdevries@suse.de>

* plugin/plugin-nvptx.c
(CU_DEVICE_ATTRIBUTE_MAX_REGISTERS_PER_MULTIPROCESSOR): Define.
(nvptx_open_device): Use
CU_DEVICE_ATTRIBUTE_MAX_REGISTERS_PER_MULTIPROCESSOR.

From-SVN: r263406

[libgomp, nvptx] Note that cuGetErrorString is in CUDA_VERSION >= 6000

Cuda driver api function cuGetErrorString is available in version 6.0 and
higher.

This patch:
- removes a comment saying the declaration is not available in cuda.h 6.0
- fixes the presence test to use CUDA_VERSION < 6000
- moves the declaration to toplevel

Build on x86_64 with nvptx accelerator and reg-tested libgomp.

2018-08-08  Tom de Vries  <tdevries@suse.de>

* plugin/plugin-nvptx.c (cuda_error): Move declaration of cuGetErrorString ...
(cuGetErrorString): ... here.  Guard with CUDA_VERSION < 6000.

From-SVN: r263405

[AArch64] Add HXT Phecda core support

HXT semiconductor's CPU core Phecda, as a variant of Qualcomm qdf24xx,
reuses the same tuning structure and pipeline with it.

Applied on behalf of: Hongbo Zhang <hongbo.zhang@linaro.org>

* config/aarch64/aarch64-cores.def: Add phecda core.
* config/aarch64/aarch64-tune.md: Regenerate.
* doc/invoke.texi: Add phecda core.

From-SVN: r263404

Fix Docbook markup for table entry

* doc/xml/manual/using.xml: Fix markup for empty table entry.
* doc/html/*: Regenerate.

From-SVN: r263401

Add missing <experimental/numeric> header to docs

* doc/xml/manual/using.xml: Add missing header to table and fix typo.
* doc/html/*: Regenerate.

From-SVN: r263398

PR libstdc++/86597 directory_entry observers should clear error_code

PR libstdc++/86597
* include/bits/fs_dir.h (directory_entry::_M_file_type(error_code&)):
Clear error_code when cached type is used.
* testsuite/27_io/filesystem/directory_entry/86597.cc: New test.

From-SVN: r263397

S/390: Fix PR85295

gcc/ChangeLog:

2018-08-08  Andreas Krebbel  <krebbel@linux.ibm.com>

PR target/85295
* config/s390/constraints.md ("NxHD0", "NxSD0"): New constraint
definitions.
* config/s390/s390.md ("movti"): Add more alternatives for
constant to GPR copies.

gcc/testsuite/ChangeLog:

2018-08-08  Andreas Krebbel  <krebbel@linux.ibm.com>

PR target/85295
* gcc.target/s390/TI-constants-lra.c: New testcase.
* gcc.target/s390/TI-constants-nolra.c: New testcase.

From-SVN: r263396

S/390: Fix whitespace problems in the backend

2018-08-08  Andreas Krebbel  <krebbel@linux.ibm.com>

* config/s390/s390.c: Fix whitespace damage throughout the file.
* config/s390/s390.h: Likewise.
* config/s390/tpf.h: Likewise.

From-SVN: r263395

S/390: Remove TARGET_CPU_ZARCH

TARGET_CPU_ZARCH allowed to distinguish between g5/g6 and newer
machines.  Since the former are now gone, we can assume that
TARGET_CPU_ZARCH is always true.  As a side-effect, branch splitting
is now completely gone.  Some parts of literal pool splitting are also
gone, but it's still there: we need to support it because floating
point and vector instructions still cannot use relative addressing.

gcc/ChangeLog:

2018-08-08  Ilya Leoshkevich  <iii@linux.ibm.com>

* config/s390/s390.c (s390_loadrelative_operand_p):
        Remove TARGET_CPU_ZARCH usages.
(s390_rtx_costs): Likewise.
(s390_legitimate_constant_p): Likewise.
(s390_cannot_force_const_mem): Likewise.
(legitimate_reload_constant_p): Likewise.
(s390_preferred_reload_class): Likewise.
(legitimize_pic_address): Likewise.
(legitimize_tls_address): Likewise.
(s390_split_branches): Removed.
(s390_add_execute): Removed.
(s390_dump_pool): Remove TARGET_CPU_ZARCH usages.
(s390_mainpool_start): Likewise.
(s390_mainpool_finish): Likewise.
(s390_mainpool_cancel): Removed.
(s390_chunkify_start): Remove TARGET_CPU_ZARCH usages.
(s390_chunkify_cancel): Likewise.
(s390_return_addr_rtx): Likewise.
(s390_register_info): Remove split_branches_pending_p uages.
(s390_optimize_register_info): Likewise.
(s390_init_frame_layout): Remove TARGET_CPU_ZARCH and
        split_branches_pending_p usages.
(s390_can_eliminate): Remove TARGET_CPU_ZARCH usages.
(s390_load_got): Likewise.
(s390_expand_split_stack_prologue): Likewise.
(output_asm_nops): Likewise.
(s390_function_profiler): Likewise.
(s390_emit_call): Likewise.
(s390_conditional_register_usage): Likewise.
(s390_optimize_prologue): Likewise.
(s390_reorg): Remove TARGET_CPU_ZARCH and
        split_branches_pending_p usages.
(s390_option_override_internal): Remove TARGET_CPU_ZARCH
        usages.
(s390_output_indirect_thunk_function): Likewise.
* config/s390/s390.h (TARGET_CPU_ZARCH): Removed.
(TARGET_CPU_ZARCH_P): Removed.
(struct machine_function): Remove split_branches_pending_p.
* config/s390/s390.md: Remove TARGET_CPU_ZARCH usages.

From-SVN: r263394

S/390: Remove support for g5 and g6 machines

g5 and g6 were deprecated since gcc 6.1.0 (commit 3bd8520f).

gcc/ChangeLog:

2018-08-08  Ilya Leoshkevich  <iii@linux.ibm.com>

* common/config/s390/s390-common.c (processor_flags_table):
        Remove flags.
* config.gcc: Remove with_arch/with_tune support.
* config/s390/2064.md: Remove cpu attribute comparisons.
* config/s390/driver-native.c (s390_host_detect_local_cpu):
        Remove MTN.
* config/s390/linux.h (ASM_SPEC):
        Remove -march support.
* config/s390/s390-c.c (s390_cpu_cpp_builtins_internal):
        Use a table to get an arch level.
* config/s390/s390-opts.h (enum processor_type):
        Remove enum values.
* config/s390/s390.c
        (processor_table): Remove entries, add arch_level values.
        (s390_issue_rate): Remove cases.
        (s390_option_override): Adjust
        s390_option_override_internal() call.
(s390_option_override_internal): Remove deprecation warning.
        (s390_valid_target_attribute_tree): Adjust
        s390_option_override_internal() call.
* config/s390/s390.h (struct s390_processor):
        Share with s390-c.c, add arch_level field.
* config/s390/s390.md:
        Remove occurrences in cpu attribute.
* config/s390/s390.opt: Remove -march/-mtune support.
* config/s390/tpf.h (ASM_SPEC): Remove -march support.
* doc/invoke.texi: Remove deprecation warning.

gcc/testsuite/ChangeLog:

2018-08-08  Ilya Leoshkevich  <iii@linux.ibm.com>

* gcc.target/s390/hotpatch-8.c: Remove.
* gcc.target/s390/hotpatch-9.c: Remove.
* gcc.target/s390/mnop-mcount-m31-fpic.c: Remove.
* gcc.target/s390/mnop-mcount-m31.c: Remove.

From-SVN: r263393

P0595R1 - is_constant_evaluated

P0595R1 - is_constant_evaluated
cp/
* cp-tree.h (enum cp_built_in_function): New.
(maybe_constant_init): Add pretend_const_required argument.
* typeck2.c (store_init_value): Pass true as new argument to
maybe_constant_init.
* constexpr.c (constexpr_fn_retval): Check also DECL_BUILT_IN_CLASS
for BUILT_IN_UNREACHABLE.
(struct constexpr_ctx): Add pretend_const_required field.
(cxx_eval_builtin_function_call): Use DECL_IS_BUILTIN_CONSTANT_P
macro.  Handle CP_BUILT_IN_IS_CONSTANT_EVALUATED.  Check also
DECL_BUILT_IN_CLASS for BUILT_IN_UNREACHABLE.
(cxx_eval_outermost_constant_expr): Add pretend_const_required
argument, initialize pretend_const_required field in ctx.  If the
result is TREE_CONSTANT and non_constant_p, retry with
pretend_const_required false if it was true.
(is_sub_constant_expr): Initialize pretend_const_required_field in
ctx.
(cxx_constant_value): Pass true as pretend_const_required to
cxx_eval_outermost_constant_expr.
(maybe_constant_value): Pass false as pretend_const_required to
cxx_eval_outermost_constant_expr.
(fold_non_dependent_expr): Likewise.
(maybe_constant_init_1): Add pretend_const_required argument, pass it
down to cxx_eval_outermost_constant_expr.  Pass !allow_non_constant
instead of false as strict to cxx_eval_outermost_constant_expr.
(maybe_constant_init): Add pretend_const_required argument, pass it
down to maybe_constant_init_1.
(cxx_constant_init): Pass true as pretend_const_required to
maybe_constant_init_1.
* cp-gimplify.c (cp_gimplify_expr): Handle CALL_EXPRs to
CP_BUILT_IN_IS_CONSTANT_EVALUATED.
(cp_fold): Don't fold CP_BUILT_IN_IS_CONSTANT_EVALUATED calls.
* decl.c: Include langhooks.h.
(cxx_init_decl_processing): Register __builtin_is_constant_evaluated
built-in.
* tree.c (builtin_valid_in_constant_expr_p): Return true for
CP_BUILT_IN_IS_CONSTANT_EVALUATED.
* pt.c (declare_integer_pack): Initialize DECL_FUNCTION_CODE.
testsuite/
* g++.dg/cpp2a/is-constant-evaluated1.C: New test.

From-SVN: r263392

re PR c++/86836 (internal compiler error on structured bindings with shadow parameter on templated function)

PR c++/86836
* pt.c (tsubst_expr): For structured bindings, call tsubst_decomp_names
before tsubst_init, not after it.

* g++.dg/cpp1z/decomp46.C: New test.

From-SVN: r263391

re PR c++/86738 (gcc 8.2: Internal compiler error memcpy)

PR c++/86738
* constexpr.c (cxx_eval_binary_expression): For arithmetics involving
NULL pointer set *non_constant_p to true.
(cxx_eval_component_reference): For dereferencing of a NULL pointer,
set *non_constant_p to true and return t.

* g++.dg/opt/pr86738.C: New test.

From-SVN: r263390

[AArch64, Falkor] Switch to using Falkor-specific vector costs.

The adjusted vector costs give Falkor a reasonable boost in performance for FP
benchmarks (both CPU2017 and CPU2006) and doesn't change INT benchmarks that
much. There are some regressions that will be investigated as follow on work.

Numbers from the CI run:

CPU2017:

(R) 605.mcf_s: -1.8%
(R) 620.omnetpp_s: -2%
    623.xalancbmk_s: 2%
    654.roms_s: 7%

(R) INT mean: -0.09%
    FP mean: 0.70%

CPU2006:

(R) 429.mc: -5%
(R) 471.omnetpp: -9.5% (potentially noise/fluctuations)
    483.xalancbmk: 6.02%
    410.bwaves: 5.03%
    433.milc: 2%
    434.zeusmp: 10.5%
(R) 436.cactusADM: -12.75%
    437.leslie3d: 5.94%
(R) 453.povray: -0.82%
    459.GemsFDTD: 16.87%
    465.tonto: 1%

(R) INT mean: -0.79%
    FP mean: 1.54%

gcc/ChangeLog:

2018-08-08  Luis Machado  <luis.machado@linaro.org>

* config/aarch64/aarch64.c (qdf24xx_vector_cost): New static global.
(qdf24xx_tunings): Set vector cost structure to qdf24xx_vector_cost.

From-SVN: r263389

[aarch64] Adjust Falkor's sign extend reg+reg address cost

Adjust Falkor's register_sextend cost from 4 to 3.  This fixes a testsuite
failure in gcc.target/aarch64/extend.c:ldr_sxtw where GCC was generating
a sbfiz instruction rather than a load with sign extension.

No performance changes.

gcc/ChangeLog:

2018-08-08  Luis Machado  <luis.machado@linaro.org>

* config/aarch64/aarch64.c (qdf24xx_addrcost_table)
<register_sextend>: Set to 3.

From-SVN: r263388

Daily bump.

From-SVN: r263387

[OpenACC] cleanup trans-stmt.h

gcc/fortran/
* trans-stmt.h: Remove stale reference to trans-openacc.c.

From-SVN: r263372

[PATCH] Line map table allocation

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00434.html
* line-map.c: (linemap_init): Set default allocator here.
(new_linemap): Rather than here.  Refactor allocation logic.

From-SVN: r263366

PR libstdc++/86874 fix std::variant::swap regression

PR libstdc++/86874
* include/std/variant (_Copy_ctor_base::_M_destructive_move): Define
here instead of in _Move_assign_base.
(_Copy_ctor_base<true, _Types...>::_M_destructive_move): Define.
(_Copy_assign_base::operator=): Use _M_destructive_move when changing
the contained value to another alternative.
(_Move_assign_base::operator=): Likewise.
(_Move_assign_base::_M_destructive_move): Remove.
* testsuite/20_util/variant/86874.cc: New test.

From-SVN: r263365

runtime: use poll rather than pollset for netpoll on AIX

    Updates golang/go#26634

    Reviewed-on: https://go-review.googlesource.com/126857

From-SVN: r263364

libgo: uncomment trace.Stop() call in testing package

    Fix up the testing package to insure that execution traces
    work properly (e.g. "-test.trace=<XXX>" command line option). The
    call to stop tracing and emit the output file was stubbed out.

    Reviewed-on: https://go-review.googlesource.com/128275

From-SVN: r263363

[AArch64] Fix -mlow-precision-div (PR 86838)

The "@" handling broke -mlow-precision-div, because the scalar forms of
the instruction were provided by a pattern that also provided FRECPX
(and so were parameterised on an unspec code as well as a mode),
while the SIMD versions had a dedicated FRECPE pattern.  This patch
moves the scalar FRECPE handling to the SIMD pattern too (as for FRECPS)
and uses a separate pattern for FRECPX.

The convention in aarch64-simd-builtins.def seemed to be to add
comments only if the mapping wasn't obvious (i.e. not just sticking
"aarch64_" on the beginning and "<mode>" on the end), so the patch
deletes the reference to the combined pattern instead of rewording it.

There didn't seem to be any coverage of -mlow-precision-div in the
testsuite, so the patch adds some tests for it.

2018-08-07  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
PR target/86838
* config/aarch64/iterators.md (FRECP, frecp_suffix): Delete.
* config/aarch64/aarch64-simd.md
(aarch64_frecp<FRECP:frecp_suffix><mode>): Fold FRECPE into...
(@aarch64_frecpe<mode>): ...here and the move FRECPX to...
(aarch64_frecpx<mode>): ...this new pattern.
* config/aarch64/aarch64-simd-builtins.def: Remove comment
about aarch64_frecp<FRECP:frecp_suffix><mode>.

gcc/testsuite/
PR target/86838
* gcc.target/aarch64/frecpe_1.c: New test.
* gcc.target/aarch64/frecpe_2.c: Likewise.

From-SVN: r263362

PR c++/59480, DR 136

/cp
2018-08-07  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/59480, DR 136
* decl.c (check_no_redeclaration_friend_default_args): New.
(duplicate_decls): Use the latter; also check that a friend
declaration specifying default arguments is a definition.

/testsuite
2018-08-07  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/59480, DR 136
* g++.dg/other/friend8.C: New.
* g++.dg/other/friend9.C: Likewise.
* g++.dg/other/friend10.C: Likewise.
* g++.dg/other/friend11.C: Likewise.
* g++.dg/other/friend12.C: Likewise.
* g++.dg/other/friend13.C: Likewise.
* g++.dg/other/friend14.C: Likewise.
* g++.dg/other/friend15.C: Likewise.
* g++.dg/parse/defarg4.C: Compile with -fpermissive -w.
* g++.dg/parse/defarg8.C: Likewise.

From-SVN: r263361

PR libstdc++/86861 Meet precondition for Solaris memalign

Solaris memalign requires alignment to be at least sizeof(int), so
increase it as needed.

Also move the check for valid alignments from the fallback
implementation of aligned_alloc into operator new, as it's required for
all of aligned_alloc, memalign, posix_memalign and __aligned_malloc.
This adds a branch to check for undefined behaviour which we could just
ignore, so the check could just be removed. It should certainly be
removed if PR 86878 is implemented to issue a warning about calls with
invalid alignments.

PR libstdc++/86861
* libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] (aligned_alloc):
Replace macro with inline function.
[__sun]: Increase alignment to meet memalign precondition.
[!HAVE__ALIGNED_MALLOC && !HAVE_POSIX_MEMALIGN && !HAVE_MEMALIGN]
(aligned_alloc): Move check for valid alignment to operator new.
Remove redundant check for non-zero size, it's enforced by the caller.
(operator new): Move check for valid alignment here. Use
__builtin_expect on check for zero size.

From-SVN: r263360

Fix PR number for HPPA speculation patch: PR target/86807 ->  PR target/86785

This just fixes the PR number in the ChangeLog.  Nothing we can do
about the SVN history.

From-SVN: r263358

re PR c++/79133 (lambda capture shadowing parameter & decltype confusion)

PR c++/79133

gcc/cp/

PR c++/79133
* name-lookup.c (check_local_shadow): Reject captures and parameters
with the same name.

testsuite/

PR c++/79133
* g++.dg/cpp0x/lambda/lambda-shadow3.C: New.
* g++.dg/cpp1y/lambda-generic-variadic18.C: Likewise.

From-SVN: r263357

Add malloc predictor (PR middle-end/83023).

2018-08-07  Martin Liska  <mliska@suse.cz>

        PR middle-end/83023
* predict.c (expr_expected_value_1): Handle DECL_IS_MALLOC,
        BUILT_IN_REALLOC and DECL_IS_OPERATOR_NEW.
* predict.def (PRED_MALLOC_NONNULL): New predictor.
* doc/extend.texi: Document that malloc attribute adds
        hit to compiler.
2018-08-07  Martin Liska  <mliska@suse.cz>

        PR middle-end/83023
* gcc.dg/predict-16.c: New test.
* g++.dg/predict-1.C: New test.

From-SVN: r263355

Define monotonic_buffer_resource members out-of-line

Move the allocation logic into libstdc++.so so that it can be changed
without worrying about inlined code in existing binaries.

Leave do_allocate inline so that calls to it can be devirtualized, and
only the slow path needs to call into the library.

* config/abi/pre/gnu.ver: Export monotonic_buffer_resource members.
* include/std/memory_resource (monotonic_buffer_resource::release):
Call _M_release_buffers to free buffers.
(monotonic_buffer_resource::do_allocate): Call _M_new_buffer to
allocate a new buffer from upstream.
(monotonic_buffer_resource::_M_new_buffer): Declare.
(monotonic_buffer_resource::_M_release_buffers): Declare.
(monotonic_buffer_resource::_Chunk): Replace definition with
declaration as opaque type.
* src/c++17/memory_resource.cc (monotonic_buffer_resource::_Chunk):
Define.
(monotonic_buffer_resource::_M_new_buffer): Define.
(monotonic_buffer_resource::_M_release_buffers): Define.

From-SVN: r263354

Fix gcc.dg/vect/no-section-anchors-vect-69.c on SPARC etc. (PR tree-optimization/80925)

2018-08-07  Steve Ellcey  <sellcey@cavium.com>
    Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>

PR tree-optimization/80925
* gcc.dg/vect/no-section-anchors-vect-69.c: Expect 3 loops
vectorized on !vect_hw_misalign targets.

Co-Authored-By: Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
From-SVN: r263352

Add missing gcc-interface/ to 2018-07-31 ChangeLog entry

From-SVN: r263351

Daily bump.

From-SVN: r263350

[libgomp, nvptx] Handle CUDA_ONE_CALL_MAYBE_NULL

This patch adds handling of functions that may not be present in the cuda
driver.

Such a function can be declared using CUDA_ONE_CALL_MAYBE_NULL in cuda-lib.def,
it can be called with the usual convenience macros, but before calling its
presence needs to be tested using new macro CUDA_CALL_EXISTS.

When using the dlopen interface (PLUGIN_NVPTX_DYNAMIC == 1), we allow
non-present functions by allowing dlsym to return NULL.  Otherwise
(PLUGIN_NVPTX_DYNAMIC == 0) we declare the non-present function to be weak.

Build and reg-tested libgomp on x86_64 with nvidia accelerator, with and without
--disable-cuda-driver, in combination with a trigger patch that adds a
non-existing function foo to cuda-lib.def:
...
CUDA_ONE_CALL_MAYBE_NULL (foo)
...
and declares it in plugin-nvptx.c:
...
CUresult foo (void);
...
and then uses it in nvptx_init after the init_cuda_lib call:
...
  if (CUDA_CALL_EXISTS (foo))
    CUDA_CALL (foo);
...

Also build and reg-tested on x86_64 with nvidia accelerator, with and without
--disable-cuda-driver, in combination with a trigger patch that replaces all
CUDA_ONE_CALLs in cuda-lib.def with CUDA_ONE_CALL_MAYBE_NULL, and guards two
CUDA_CALLs with CUDA_CALL_EXISTS, one for a regular fn, and one for a fn that is
a define in cuda/cuda.h.

2018-08-07  Tom de Vries  <tdevries@suse.de>

* plugin/plugin-nvptx.c (DO_PRAGMA): Define.
(struct cuda_lib_s): Add def/undef of CUDA_ONE_CALL_MAYBE_NULL.
(init_cuda_lib): Add new param to CUDA_ONE_CALL_1.  Add arg to
corresponding call in CUDA_ONE_CALL.  Add def/undef of
CUDA_ONE_CALL_MAYBE_NULL.
(CUDA_CALL_EXISTS): Define.

From-SVN: r263346

[libgomp, nvptx] Minimize lifetime of CUDA_ONE_CALL defines

This patch makes sure that the lifetimes of the CUDA_ONE_CALL macro (which is
defined twice in plugin-nvptx.c) are minimized, to make it obvious that the
definitions are used only in the lib-cuda.def include.

Build on x86_64 with nvptx accelerator and reg-tested libgomp.

2018-08-07  Tom de Vries  <tdevries@suse.de>

* plugin/plugin-nvptx.c (struct cuda_lib_s, init_cuda_lib): Put
CUDA_ONE_CALL defines right before the cuda-lib.def include, and the
corresponding undefs right after.

From-SVN: r263345

re PR target/86807 (spu port needs updating for CVE-2017-5753)

PR target/86807
* config/pa/pa.c (TARGET_HAVE_SPECULATION_SAFE_VALUE):
Define to speculation_safe_value_not_needed.

From-SVN: r263344

tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down the vr_values instance to cprop_into_stmt.

* tree-ssa-dom.c (dom_opt_dom_walker::optimize_stmt): Pass down
the vr_values instance to cprop_into_stmt.
(cprop_into_stmt): Pass vr_values instance down to cprop_operand.
(cprop_operand): Also query EVRP to determine if OP is a constant.

From-SVN: r263342

[PATCH] Diagnostic included-from loop

https://gcc.gnu.org/ml/gcc-patches/2018-08/msg00416.html
* diagnostic.c (diagnostic_report_current_module): Reroll
included-at loop.  Translate text.

From-SVN: r263341

re PR c++/86767 (continue statements in constexpr functions causes unbounded looping)

PR c++/86767
* constexpr.c (cxx_eval_statement_list): Handle continue.

* g++.dg/cpp1y/constexpr-86767.C: New test.

From-SVN: r263340

Fix memory leak in selftest::test_expansion_to_rtl

"make selftest-valgrind" shows:

187 bytes in 1 blocks are definitely lost in loss record 567 of 669
    at 0x4A081D4: calloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
    by 0x1F08260: xcalloc (xmalloc.c:162)
    by 0xB24F32: init_emit() (emit-rtl.c:5843)
    by 0xC10080: prepare_function_start() (function.c:4803)
    by 0xC10254: init_function_start(tree_node*) (function.c:4877)
    by 0x1CDF92A: selftest::test_expansion_to_rtl() (function-tests.c:595)
    by 0x1CE007C: selftest::function_tests_c_tests() (function-tests.c:676)
    by 0x1E010E7: selftest::run_tests() (selftest-run-tests.c:98)
    by 0x1062D1E: toplev::run_self_tests() (toplev.c:2225)
    by 0x1062F40: toplev::main(int, char**) (toplev.c:2303)
    by 0x1E5B90A: main (main.c:39)

The allocation in question is:

  crtl->emit.regno_pointer_align
    = XCNEWVEC (unsigned char, crtl->emit.regno_pointer_align_length);

This patch fixes this leak (and makes the output of
"make selftest-valgrind" clean) by calling free_after_compilation at the
end of the selftest in question.

gcc/ChangeLog:
* function-tests.c (selftest::test_expansion_to_rtl): Call
free_after_compilation.

From-SVN: r263339

pr86763.C (dg-additional-options): Add -lrt for target *-*-linux-gnu.

* g++.dg/torture/pr86763.C (dg-additional-options): Add -lrt
for target *-*-linux-gnu.

From-SVN: r263338

Enable clobber high for tls descs on Aarch64

gcc/
* config/aarch64/aarch64.md: Add clobber highs to tls_desc.

gcc/testsuite/
* gcc.target/aarch64/sve/tls_preserve_1.c: New test.
* gcc.target/aarch64/sve/tls_preserve_2.c: New test.
* gcc.target/aarch64/sve/tls_preserve_3.c: New test.

From-SVN: r263337

S/390: Don't unroll memory blk op loops

gcc/ChangeLog:

2018-08-06  Andreas Krebbel  <krebbel@linux.ibm.com>

* config/s390/s390.c (s390_loop_unroll_adjust): Prevent small
loops with memory block operations from getting unrolled.

gcc/testsuite/ChangeLog:

2018-08-06  Andreas Krebbel  <krebbel@linux.ibm.com>

* gcc.target/s390/nomemloopunroll-1.c: New test.

From-SVN: r263336