einfo.ads, einfo.adb (Activation_Record_Component, [...]): Allow E_Discriminant.

2018-01-11  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

* einfo.ads, einfo.adb (Activation_Record_Component,
Set_Activation_Record_Component, Set_Is_Uplevel_Referenced_Entity):
Allow E_Discriminant.

From-SVN: r256481

re PR tree-optimization/83189 (internal compiler error: in probability_in, at profile-count.h:1050)

PR middle-end/83189
* gfortran.fortran-torture/compile/pr83189.f90: New testcase.
* tree-ssa-loop-manip.c (tree_transform_and_unroll_loop): Handle zero
profile.

From-SVN: r256480

re PR rtl-optimization/83575 (ICE: verify_flow_info failed (error: multiple hot/cold transitions found))

PR middle-end/83575
* cfgrtl.c (rtl_verify_edges): Only verify fixability of partition
when in layout mode.
(cfg_layout_finalize): Do not verify cfg before we are out of layout.
* cfgcleanup.c (try_optimize_cfg): Only verify flow info when doing
partition fixup.

* gcc.c-torture/compile/pr83575.c: New testcase.

From-SVN: r256479

aarch64-modes.def (V2HF): New VECTOR_MODE.

2018-01-10  Michael Collison  <michael.collison@arm.com>

* config/aarch64/aarch64-modes.def (V2HF): New VECTOR_MODE.
* config/aarch64/aarch64-option-extension.def: Add
AARCH64_OPT_EXTENSION of 'fp16fml'.
* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
(__ARM_FEATURE_FP16_FML): Define if TARGET_F16FML is true.
* config/aarch64/predicates.md (aarch64_lane_imm3): New predicate.
* config/aarch64/constraints.md (Ui7): New constraint.
* config/aarch64/iterators.md (VFMLA_W): New mode iterator.
(VFMLA_SEL_W): Ditto.
(f16quad): Ditto.
(f16mac1): Ditto.
(VFMLA16_LOW): New int iterator.
(VFMLA16_HIGH): Ditto.
(UNSPEC_FMLAL): New unspec.
(UNSPEC_FMLSL): Ditto.
(UNSPEC_FMLAL2): Ditto.
(UNSPEC_FMLSL2): Ditto.
(f16mac): New code attribute.
* config/aarch64/aarch64-simd-builtins.def
(aarch64_fmlal_lowv2sf): Ditto.
(aarch64_fmlsl_lowv2sf): Ditto.
(aarch64_fmlalq_lowv4sf): Ditto.
(aarch64_fmlslq_lowv4sf): Ditto.
(aarch64_fmlal_highv2sf): Ditto.
(aarch64_fmlsl_highv2sf): Ditto.
(aarch64_fmlalq_highv4sf): Ditto.
(aarch64_fmlslq_highv4sf): Ditto.
(aarch64_fmlal_lane_lowv2sf): Ditto.
(aarch64_fmlsl_lane_lowv2sf): Ditto.
(aarch64_fmlal_laneq_lowv2sf): Ditto.
(aarch64_fmlsl_laneq_lowv2sf): Ditto.
(aarch64_fmlalq_lane_lowv4sf): Ditto.
(aarch64_fmlsl_lane_lowv4sf): Ditto.
(aarch64_fmlalq_laneq_lowv4sf): Ditto.
(aarch64_fmlsl_laneq_lowv4sf): Ditto.
(aarch64_fmlal_lane_highv2sf): Ditto.
(aarch64_fmlsl_lane_highv2sf): Ditto.
(aarch64_fmlal_laneq_highv2sf): Ditto.
(aarch64_fmlsl_laneq_highv2sf): Ditto.
(aarch64_fmlalq_lane_highv4sf): Ditto.
(aarch64_fmlsl_lane_highv4sf): Ditto.
(aarch64_fmlalq_laneq_highv4sf): Ditto.
(aarch64_fmlsl_laneq_highv4sf): Ditto.
* config/aarch64/aarch64-simd.md:
(aarch64_fml<f16mac1>l<f16quad>_low<mode>): New pattern.
(aarch64_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
(aarch64_simd_fml<f16mac1>l<f16quad>_low<mode>): Ditto.
(aarch64_simd_fml<f16mac1>l<f16quad>_high<mode>): Ditto.
(aarch64_fml<f16mac1>l_lane_lowv2sf): Ditto.
(aarch64_fml<f16mac1>l_lane_highv2sf): Ditto.
(aarch64_simd_fml<f16mac>l_lane_lowv2sf): Ditto.
(aarch64_simd_fml<f16mac>l_lane_highv2sf): Ditto.
(aarch64_fml<f16mac1>lq_laneq_lowv4sf): Ditto.
(aarch64_fml<f16mac1>lq_laneq_highv4sf): Ditto.
(aarch64_simd_fml<f16mac>lq_laneq_lowv4sf): Ditto.
(aarch64_simd_fml<f16mac>lq_laneq_highv4sf): Ditto.
(aarch64_fml<f16mac1>l_laneq_lowv2sf): Ditto.
(aarch64_fml<f16mac1>l_laneq_highv2sf): Ditto.
(aarch64_simd_fml<f16mac>l_laneq_lowv2sf): Ditto.
(aarch64_simd_fml<f16mac>l_laneq_highv2sf): Ditto.
(aarch64_fml<f16mac1>lq_lane_lowv4sf): Ditto.
(aarch64_fml<f16mac1>lq_lane_highv4sf): Ditto.
(aarch64_simd_fml<f16mac>lq_lane_lowv4sf): Ditto.
(aarch64_simd_fml<f16mac>lq_lane_highv4sf): Ditto.
* config/aarch64/arm_neon.h (vfmlal_low_u32): New intrinsic.
(vfmlsl_low_u32): Ditto.
(vfmlalq_low_u32): Ditto.
(vfmlslq_low_u32): Ditto.
(vfmlal_high_u32): Ditto.
(vfmlsl_high_u32): Ditto.
(vfmlalq_high_u32): Ditto.
(vfmlslq_high_u32): Ditto.
(vfmlal_lane_low_u32): Ditto.
(vfmlsl_lane_low_u32): Ditto.
(vfmlal_laneq_low_u32): Ditto.
(vfmlsl_laneq_low_u32): Ditto.
(vfmlalq_lane_low_u32): Ditto.
(vfmlslq_lane_low_u32): Ditto.
(vfmlalq_laneq_low_u32): Ditto.
(vfmlslq_laneq_low_u32): Ditto.
(vfmlal_lane_high_u32): Ditto.
(vfmlsl_lane_high_u32): Ditto.
(vfmlal_laneq_high_u32): Ditto.
(vfmlsl_laneq_high_u32): Ditto.
(vfmlalq_lane_high_u32): Ditto.
(vfmlslq_lane_high_u32): Ditto.
(vfmlalq_laneq_high_u32): Ditto.
(vfmlslq_laneq_high_u32): Ditto.
* config/aarch64/aarch64.h (AARCH64_FL_F16SML): New flag.
(AARCH64_FL_FOR_ARCH8_4): New.
(AARCH64_ISA_F16FML): New ISA flag.
(TARGET_F16FML): New feature flag for fp16fml.
(doc/invoke.texi): Document new fp16fml option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

* config/aarch64/aarch64-builtins.c:
(aarch64_types_ternopu_imm_qualifiers, TYPES_TERNOPUI): New.
* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
(__ARM_FEATURE_SHA3): Define if TARGET_SHA3 is true.
* config/aarch64/aarch64.h (AARCH64_FL_SHA3): New flags.
(AARCH64_ISA_SHA3): New ISA flag.
(TARGET_SHA3): New feature flag for sha3.
* config/aarch64/iterators.md (sha512_op): New int attribute.
(CRYPTO_SHA512): New int iterator.
(UNSPEC_SHA512H): New unspec.
(UNSPEC_SHA512H2): Ditto.
(UNSPEC_SHA512SU0): Ditto.
(UNSPEC_SHA512SU1): Ditto.
* config/aarch64/aarch64-simd-builtins.def
(aarch64_crypto_sha512hqv2di): New builtin.
(aarch64_crypto_sha512h2qv2di): Ditto.
(aarch64_crypto_sha512su0qv2di): Ditto.
(aarch64_crypto_sha512su1qv2di): Ditto.
(aarch64_eor3qv8hi): Ditto.
(aarch64_rax1qv2di): Ditto.
(aarch64_xarqv2di): Ditto.
(aarch64_bcaxqv8hi): Ditto.
* config/aarch64/aarch64-simd.md:
(aarch64_crypto_sha512h<sha512_op>qv2di): New pattern.
(aarch64_crypto_sha512su0qv2di): Ditto.
(aarch64_crypto_sha512su1qv2di): Ditto.
(aarch64_eor3qv8hi): Ditto.
(aarch64_rax1qv2di): Ditto.
(aarch64_xarqv2di): Ditto.
(aarch64_bcaxqv8hi): Ditto.
* config/aarch64/arm_neon.h (vsha512hq_u64): New intrinsic.
(vsha512h2q_u64): Ditto.
(vsha512su0q_u64): Ditto.
(vsha512su1q_u64): Ditto.
(veor3q_u16): Ditto.
(vrax1q_u64): Ditto.
(vxarq_u64): Ditto.
(vbcaxq_u16): Ditto.
* config/arm/types.md (crypto_sha512): New type attribute.
(crypto_sha3): Ditto.
(doc/invoke.texi): Document new sha3 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

* config/aarch64/aarch64-builtins.c:
(aarch64_types_quadopu_imm_qualifiers, TYPES_QUADOPUI): New.
* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
(__ARM_FEATURE_SM3): Define if TARGET_SM4 is true.
(__ARM_FEATURE_SM4): Define if TARGET_SM4 is true.
* config/aarch64/aarch64.h (AARCH64_FL_SM4): New flags.
(AARCH64_ISA_SM4): New ISA flag.
(TARGET_SM4): New feature flag for sm4.
* config/aarch64/aarch64-simd-builtins.def
(aarch64_sm3ss1qv4si): Ditto.
(aarch64_sm3tt1aq4si): Ditto.
(aarch64_sm3tt1bq4si): Ditto.
(aarch64_sm3tt2aq4si): Ditto.
(aarch64_sm3tt2bq4si): Ditto.
(aarch64_sm3partw1qv4si): Ditto.
(aarch64_sm3partw2qv4si): Ditto.
(aarch64_sm4eqv4si): Ditto.
(aarch64_sm4ekeyqv4si): Ditto.
* config/aarch64/aarch64-simd.md:
(aarch64_sm3ss1qv4si): Ditto.
(aarch64_sm3tt<sm3tt_op>qv4si): Ditto.
(aarch64_sm3partw<sm3part_op>qv4si): Ditto.
(aarch64_sm4eqv4si): Ditto.
(aarch64_sm4ekeyqv4si): Ditto.
* config/aarch64/iterators.md (sm3tt_op): New int iterator.
(sm3part_op): Ditto.
(CRYPTO_SM3TT): Ditto.
(CRYPTO_SM3PART): Ditto.
(UNSPEC_SM3SS1): New unspec.
(UNSPEC_SM3TT1A): Ditto.
(UNSPEC_SM3TT1B): Ditto.
(UNSPEC_SM3TT2A): Ditto.
(UNSPEC_SM3TT2B): Ditto.
(UNSPEC_SM3PARTW1): Ditto.
(UNSPEC_SM3PARTW2): Ditto.
(UNSPEC_SM4E): Ditto.
(UNSPEC_SM4EKEY): Ditto.
* config/aarch64/constraints.md (Ui2): New constraint.
* config/aarch64/predicates.md (aarch64_imm2): New predicate.
* config/arm/types.md (crypto_sm3): New type attribute.
(crypto_sm4): Ditto.
* config/aarch64/arm_neon.h (vsm3ss1q_u32): New intrinsic.
(vsm3tt1aq_u32): Ditto.
(vsm3tt1bq_u32): Ditto.
(vsm3tt2aq_u32): Ditto.
(vsm3tt2bq_u32): Ditto.
(vsm3partw1q_u32): Ditto.
(vsm3partw2q_u32): Ditto.
(vsm4eq_u32): Ditto.
(vsm4ekeyq_u32): Ditto.
(doc/invoke.texi): Document new sm4 option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

* config/aarch64/aarch64-arches.def (armv8.4-a): New architecture.
* config/aarch64/aarch64.h (AARCH64_ISA_V8_4): New ISA flag.
(AARCH64_FL_FOR_ARCH8_4): New.
(AARCH64_FL_V8_4): New flag.
(doc/invoke.texi): Document new armv8.4-a option.

2018-01-10  Michael Collison  <michael.collison@arm.com>

* config/aarch64/aarch64-c.c (aarch64_update_cpp_builtins):
(__ARM_FEATURE_AES): Define if TARGET_AES is true.
(__ARM_FEATURE_SHA2): Define if TARGET_SHA2 is true.
* config/aarch64/aarch64-option-extension.def: Add
AARCH64_OPT_EXTENSION of 'sha2'.
(aes): Add AARCH64_OPT_EXTENSION of 'aes'.
(crypto): Disable sha2 and aes if crypto disabled.
(crypto): Enable aes and sha2 if enabled.
(simd): Disable sha2 and aes if simd disabled.
* config/aarch64/aarch64.h (AARCH64_FL_AES, AARCH64_FL_SHA2):
New flags.
(AARCH64_ISA_AES, AARCH64_ISA_SHA2): New ISA flags.
(TARGET_SHA2): New feature flag for sha2.
(TARGET_AES): New feature flag for aes.
* config/aarch64/aarch64-simd.md:
(aarch64_crypto_aes<aes_op>v16qi): Make pattern
conditional on TARGET_AES.
(aarch64_crypto_aes<aesmc_op>v16qi): Ditto.
(aarch64_crypto_sha1hsi): Make pattern conditional
on TARGET_SHA2.
(aarch64_crypto_sha1hv4si): Ditto.
(aarch64_be_crypto_sha1hv4si): Ditto.
(aarch64_crypto_sha1su1v4si): Ditto.
(aarch64_crypto_sha1<sha1_op>v4si): Ditto.
(aarch64_crypto_sha1su0v4si): Ditto.
(aarch64_crypto_sha256h<sha256_op>v4si): Ditto.
(aarch64_crypto_sha256su0v4si): Ditto.
(aarch64_crypto_sha256su1v4si): Ditto.
(doc/invoke.texi): Document new aes and sha2 options.

From-SVN: r256478

PR tree-optimization/83781 - Bootstrap failed on x86 with --with-arch=corei7

PR tree-optimization/83781 - Bootstrap failed on x86 with --with-arch=corei7
  --with-cpu=corei7

gcc/ChangeLog:
* gimple-fold.c (get_range_strlen): Avoid treating arrays of pointers
as string arrays.

gcc/testsuite/ChangeLog:
* gcc.dg/strlenopt-42.c: New test.

From-SVN: r256477

re PR tree-optimization/83501 (strlen(a) not folded after strcpy(a, "..."))

2018-01-11  Martin Sebor  <msebor@gmail.com>
    Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

PR tree-optimization/83501
PR tree-optimization/81703

* tree-ssa-strlen.c (get_string_cst): Rename...
(get_string_len): ...to this.  Handle global constants.
(handle_char_store): Adjust.

testsuite/
* gcc.dg/strlenopt-39.c: New test-case.
* gcc.dg/pr81703.c: Likewise.

Co-Authored-By: Prathamesh Kulkarni <prathamesh.kulkarni@linaro.org>
From-SVN: r256475

debug/dwarf: formStrp uses a 64-bit value for 64-bit DWARF

    No test as the only system I know that uses 64-bit DWARF is AIX.

    Backport of https://golang.org/cl/84379, which will be in Go 1.11.
    Backporting now for AIX support in gccgo.

    Reviewed-on: https://go-review.googlesource.com/87296

From-SVN: r256474

Daily bump.

From-SVN: r256472

decl.c (gnat_to_gnu_component_type): Apply the check for atomic access once the component size is taken into account...

* gcc-interface/decl.c (gnat_to_gnu_component_type): Apply the check
for atomic access once the component size is taken into account and
also do it if the component type is Atomic or Volatile_Full_Access.

From-SVN: r256465

re PR fortran/82367 (ICE with deferred length string allocate on non-deferred length argument)

2018-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/82367
* resolve.c (resolve_allocate_expr): Check for NULL pointer.

2018-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/82367
* gfortran.dg/deferred_character_18.f90: New test.

From-SVN: r256464

c-ada-spec.c (dump_number): Add FLOAT_P parameter.

* c-ada-spec.c (dump_number): Add FLOAT_P parameter.
Skip 'f' and 'F' characters if it is true.
(store_ada_macro): Minor tweak.
(dump_ada_macros) <CPP_COMMENT>: Likewise.
<CPP_WSTRING>: Likewise.
<CPP_STRING>: Output '&' in the buffer if not the first string.
<CPP_NUMBER>: Adjust calls to dump_number.

From-SVN: r256463

RISC-V: Add naked function support.

2018-01-10  Kito Cheng  <kito.cheng@gmail.com>

gcc/
* config/riscv/riscv-protos.h (riscv_output_return): New.
* config/riscv/riscv.c (struct machine_function): New naked_p field.
(riscv_attribute_table, riscv_output_return),
(riscv_handle_fndecl_attribute, riscv_naked_function_p),
(riscv_allocate_stack_slots_for_args, riscv_warn_func_return): New.
(riscv_compute_frame_info): Only compute frame->mask if not a naked
function.
(riscv_expand_prologue): Add early return for naked function.
(riscv_expand_epilogue): Likewise.
(riscv_function_ok_for_sibcall): Return false for naked function.
(riscv_set_current_function): New.
(TARGET_SET_CURRENT_FUNCTION, TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS),
(TARGET_ATTRIBUTE_TABLE, TARGET_WARN_FUNC_RETURN): New.
* config/riscv/riscv.md (simple_return): Call riscv_output_return.
* doc/extend.texi (RISC-V Function Attributes): New.

Co-Authored-By: Jim Wilson <jimw@sifive.com>
From-SVN: r256462

argv.c (expandargv): Correct check for dynamically allocated argv.

2018-01-10  Daniel van Gerpen  <daniel@vangerpen.de>

* argv.c (expandargv): Correct check for dynamically
allocated argv.

From-SVN: r256460

rs6000.c (is_complex_IBM_long_double): Explicitly check for 128-bit long double before checking TCmode.

2018-01-10  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/rs6000.c (is_complex_IBM_long_double): Explicitly
check for 128-bit long double before checking TCmode.
* config/rs6000/rs6000.h (FLOAT128_IEEE_P): Explicitly check for
128-bit long doubles before checking TFmode or TCmode.
(FLOAT128_IBM_P): Likewise.

From-SVN: r256458

PR tree-optimization/83671 - Fix for false positive reported by -Wstringop-overflow does not work with inlining

gcc/testsuite/ChangeLog:

PR tree-optimization/83671
* gcc.dg/strlenopt-40.c: New test.
* gcc.dg/strlenopt-41.c: New test.

gcc/ChangeLog:

PR tree-optimization/83671
* builtins.c (c_strlen): Unconditionally return zero for the empty
string.
Use -Warray-bounds for warnings.
* gimple-fold.c (get_range_strlen): Handle non-constant lengths
for non-constant array indices with COMPONENT_REF, arrays of
arrays, and pointers to arrays.
(gimple_fold_builtin_strlen): Determine and set length range for
non-constant character arrays.

From-SVN: r256457

re PR middle-end/81897 (spurious -Wmaybe-uninitialized warning)

PR middle-end/81897
* tree-ssa-uninit.c (convert_control_dep_chain_into_preds): Skip
empty blocks.

From-SVN: r256456

[multiple changes]

2018-01-10 Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83093
* resolve.c (resolve_charlen): Check the type of cl->length
after resolution.

2018-01-10  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83093
* gfortran.dg/allocate_with_typespec_7.f90: New test.

From-SVN: r256455

* dwarf2out.c (dwarf2out_var_location): Do not pass NULL to fprintf.

From-SVN: r256454

re PR target/83399 (Power8 ICE During LRA with 2-op rtl pattern for lvx instruction)

gcc/
PR target/83399
* config/rs6000/rs6000.c (print_operand) <'y'>: Use
VECTOR_MEM_ALTIVEC_OR_VSX_P.
* config/rs6000/vsx.md (*vsx_le_perm_load_<mode> for VSX_D): Use
indexed_or_indirect_operand predicate.
(*vsx_le_perm_load_<mode> for VSX_W): Likewise.
(*vsx_le_perm_load_v8hi): Likewise.
(*vsx_le_perm_load_v16qi): Likewise.
(*vsx_le_perm_store_<mode> for VSX_D): Likewise.
(*vsx_le_perm_store_<mode> for VSX_W): Likewise.
(*vsx_le_perm_store_v8hi): Likewise.
(*vsx_le_perm_store_v16qi): Likewise.
(eight unnamed splitters): Likewise.

gcc/testsuite/
PR target/83399
* gcc.target/powerpc/pr83399.c: New test.

From-SVN: r256453

x86intrin.h: Change #warning to #error.

* config/rs6000/x86intrin.h: Change #warning to #error. Update message.
* config/rs6000/emmintrin.h: Likewise.
* config/rs6000/mmintrin.h: Likewise.
* config/rs6000/xmmintrin.h: Likewise.

From-SVN: r256452

parser.c (cp_parser_std_attribute_spec): When token_pair::require_open / require_close return false simply return...

2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

* parser.c (cp_parser_std_attribute_spec): When
        token_pair::require_open / require_close return false simply
return error_mark_node, avoid duplicate cp_parser_error about
expected '(' / ')', respectively.

From-SVN: r256451

os, syscall: handle _st_timespec for AIX stat

    Reviewed-on: https://go-review.googlesource.com/87197

From-SVN: r256450

Preserving locations for variable-uses and constants (PR c++/43486)

This patch implements location wrapper nodes, preserving source locations
of the uses of variables and constants in various places in the
C++ frontend: at the arguments at callsites, and for typeid, alignof,
sizeof, and offsetof.

For example, it allows the C++ FE to underline the pertinent argument
for mismatching calls, for such expressions, improving:

extern int callee (int one, const char *two, float three);

int caller (int first, int second, float third)
{
  return callee (first, second, third);
}

from

test.cc: In function 'int caller(int, int, float)':
test.cc:5:38: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
   return callee (first, second, third);
                                      ^
test.cc:1:41: note:   initializing argument 2 of 'int callee(int, const char*, float)'
 extern int callee (int one, const char *two, float three);
                             ~~~~~~~~~~~~^~~

to:

test.cc: In function 'int caller(int, int, float)':
test.cc:5:25: error: invalid conversion from 'int' to 'const char*' [-fpermissive]
   return callee (first, second, third);
                         ^~~~~~
test.cc:1:41: note:   initializing argument 2 of 'int callee(int, const char*, float)'
 extern int callee (int one, const char *two, float three);
                             ~~~~~~~~~~~~^~~

This is the combination of the following patches:

  "[PATCH 01/14] C++: preserve locations within build_address"
     https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00883.html

  "[PATCH v2.4 of 02/14] Support for adding and stripping location_t wrapper nodes"
    https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00591.html

  "[PATCH] Eliminate location wrappers in tree_nop_conversion/STRIP_NOPS"
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01330.html

  "[PATCH v4 of 03/14] C++: add location_t wrapper nodes during parsing (minimal impl)"
    https://gcc.gnu.org/ml/gcc-patches/2018-01/msg00660.html

  "[PATCH 04/14] Update testsuite to show improvements"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00891.html

  "[v3 of 05/14] C++: handle locations wrappers when calling warn_for_memset"
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01378.html

  "[PATCH 07/14] reject_gcc_builtin: strip any location wrappers"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00886.html

  "[v3 of PATCH 08/14] cp/tree.c: strip location wrappers in lvalue_kind"
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01433.html

  "[PATCH 09/14] Strip location wrappers in null_ptr_cst_p"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00888.html

  "[PATCH 11/14] Handle location wrappers in string_conv_p"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00890.html

  "[PATCH 12/14] C++: introduce null_node_p"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00894.html

  "[v3 of PATCH 13/14] c-format.c: handle location wrappers"
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01494.html

  "[PATCH 14/14] pp_c_cast_expression: don't print casts for location wrappers"
    https://gcc.gnu.org/ml/gcc-patches/2017-11/msg00893.html

  "[v3 of PATCH 15/14] Use fold_for_warn in get_atomic_generic_size"
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01380.html

  "[PATCH] Add selftest for "fold_for_warn (error_mark_node)""
    https://gcc.gnu.org/ml/gcc-patches/2017-12/msg01385.html

gcc/c-family/ChangeLog:
PR c++/43486
* c-common.c: Include "selftest.h".
(get_atomic_generic_size): Perform the test for integral type
before the range test for any integer constant, fixing indentation
of braces.  Call fold_for_warn before testing for an INTEGER_CST.
(reject_gcc_builtin): Strip any location wrapper from EXPR.
(selftest::test_fold_for_warn): New function.
(selftest::c_common_c_tests): New function.
(selftest::c_family_tests): Call it, and
selftest::c_pretty_print_c_tests.
* c-common.h (selftest::c_pretty_print_c_tests): New decl.
* c-format.c (check_format_arg): Convert VAR_P check to a
fold_for_warn.
* c-pretty-print.c: Include "selftest.h".
(pp_c_cast_expression): Don't print casts for location wrappers.
(selftest::assert_c_pretty_printer_output): New function.
(ASSERT_C_PRETTY_PRINTER_OUTPUT): New macro.
(selftest::test_location_wrappers): New function.
(selftest::c_pretty_print_c_tests): New function.
* c-warn.c (warn_for_memset): Call fold_for_warn on the arguments.

gcc/cp/ChangeLog:
PR c++/43486
* call.c (null_ptr_cst_p): Strip location wrappers when
converting from '0' to a pointer type in C++11 onwards.
(conversion_null_warnings): Replace comparison with null_node with
call to null_node_p.
(build_over_call): Likewise.
* cp-gimplify.c (cp_fold): Remove the early bailout when
processing_template_decl.
* cp-lang.c (selftest::run_cp_tests): Call
selftest::cp_pt_c_tests and selftest::cp_tree_c_tests.
* cp-tree.h (cp_expr::maybe_add_location_wrapper): New method.
(selftest::run_cp_tests): Move decl to bottom of file.
(null_node_p): New inline function.
(selftest::cp_pt_c_tests): New decl.
(selftest::cp_tree_c_tests): New decl.
* cvt.c (build_expr_type_conversion): Replace comparison with
null_node with call to null_node_p.
* error.c (args_to_string): Likewise.
* except.c (build_throw): Likewise.
* mangle.c (write_expression): Skip location wrapper nodes.
* parser.c (literal_integer_zerop): New function.
(cp_parser_postfix_expression): Call maybe_add_location_wrapper on
the result for RID_TYPEID. Pass true for new "wrap_locations_p"
param of cp_parser_parenthesized_expression_list.  When calling
warn_for_memset, replace integer_zerop calls with
literal_integer_zerop, eliminating the double logical negation
cast to bool.  Eliminate the special-casing for CONST_DECL in
favor of the fold_for_warn within warn_for_memset.
(cp_parser_parenthesized_expression_list): Add "wrap_locations_p"
param, defaulting to false.  Convert "expr" to a cp_expr, and call
maybe_add_location_wrapper on it when wrap_locations_p is true.
(cp_parser_unary_expression): Call maybe_add_location_wrapper on
the result for RID_ALIGNOF and RID_SIZEOF.
(cp_parser_builtin_offsetof): Likewise.
* pt.c: Include "selftest.h".
(tsubst_copy): Handle location wrappers.
(tsubst_copy_and_build): Likewise.
(build_non_dependent_expr): Likewise.
(selftest::test_build_non_dependent_expr): New function.
(selftest::cp_pt_c_tests): New function.
* tree.c: Include "selftest.h".
(lvalue_kind): Handle VIEW_CONVERT_EXPR location wrapper nodes.
(selftest::test_lvalue_kind): New function.
(selftest::cp_tree_c_tests): New function.
* typeck.c (string_conv_p): Strip any location wrapper from "exp".
(cp_build_binary_op): Replace comparison with null_node with call
to null_node_p.
(build_address): Use location of operand when building address
expression.

gcc/testsuite/ChangeLog:
PR c++/43486
* g++.dg/diagnostic/param-type-mismatch.C: Update expected results
to reflect that the arguments are correctly underlined.
* g++.dg/plugin/diagnostic-test-expressions-1.C: Add test coverage
for globals, params, locals and literals.
(test_sizeof): Directly test the location of "sizeof", rather than
when used in compound expressions.
(test_alignof): Likewise for "alignof".
(test_string_literals): Likewise for string literals.
(test_numeric_literals): Likewise for numeric literals.
(test_builtin_offsetof): Likewise for "__builtin_offsetof".
(test_typeid): Likewise for typeid.
(test_unary_plus): New.
* g++.dg/warn/Wformat-1.C: Add tests of pointer arithmetic on
format strings.

gcc/ChangeLog:
PR c++/43486
* tree-core.h: Document EXPR_LOCATION_WRAPPER_P's usage of
"public_flag".
* tree.c (tree_nop_conversion): Return true for location wrapper
nodes.
(maybe_wrap_with_location): New function.
(selftest::check_strip_nops): New function.
(selftest::test_location_wrappers): New function.
(selftest::tree_c_tests): Call it.
* tree.h (STRIP_ANY_LOCATION_WRAPPER): New macro.
(maybe_wrap_with_location): New decl.
(EXPR_LOCATION_WRAPPER_P): New macro.
(location_wrapper_p): New inline function.
(tree_strip_any_location_wrapper): New inline function.

From-SVN: r256448

pr82618.c (dg-options): Add -mno-stv.

* gcc.target/i386/pr82618.c (dg-options): Add -mno-stv.

From-SVN: r256447

libgo: add platform support for SuperH

    Reviewed-on: https://go-review.googlesource.com/84555

From-SVN: r256446

memcmp-1.c: Reduce runtime to something reasonable.

2018-01-10  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

* gcc.dg/memcmp-1.c: Reduce runtime to something reasonable.

From-SVN: r256443

Add missing .a files.

Add missing .a files.  These should have been committed with the
update to go1.10beta1, but were skipped because by default Subversion
ignores all files matching *.a.

From-SVN: r256442

re PR c++/82541 (Wduplicated-branches triggers in template context)

PR c++/82541
* call.c (build_conditional_expr_1): Check complain before warning.
* pt.c (tsubst_copy_and_build) <case COND_EXPR>: Suppress
-Wduplicated-branches.

* g++.dg/warn/Wduplicated-branches4.C: New test.

From-SVN: r256441

re PR c++/81327 (cast to void* does not suppress -Wclass-memaccess)

PR c++/81327
* call.c (maybe_warn_class_memaccess): Add forward declaration.
Change last argument from tree * to const vec<tree, va_gc> *, adjust
args uses and check number of operands too.  Don't strip away any
nops.  Use maybe_constant_value when looking for INTEGER_CST args.
Deal with src argument not having pointer type.  Check
tree_fits_uhwi_p before calling tree_to_uhwi.  Remove useless
test.
(build_over_call): Call maybe_warn_class_memaccess here on the
original arguments.
(build_cxx_call): Rather than here on converted arguments.

* g++.dg/Wclass-memaccess-2.C: Don't expect a warning when explicitly
cast to void *.

From-SVN: r256440

2018-01-10  François Dumont  <fdumont@gcc.gnu.org>

* include/bits/forward_list.h
(_Fwd_list_node_base(_Fwd_list_node_base&&)): New.
(_Fwd_list_node_base& operator=(_Fwd_list_node_base&&)): New.
(_Fwd_list_node_base(const _Fwd_list_node_base&)): Explicit delete.
(_Fwd_list_node_base& operator=(const _Fwd_list_node_base&)): Likewise.
(_Fwd_list_impl()): Add noexcept qualification.
(_Fwd_list_impl(const _Node_alloc_type&)): Delete.
(_Fwd_list_impl(_Fwd_list_impl&&)): New, default.
(_Fwd_list_impl(_Fwd_list_impl&&, _Node_alloc_type&&)): New.
(_Fwd_list_base()): Default.
(_Fwd_list_base(_Fwd_list_base&&, _Node_alloc_type&&, true_type)): New.
(_Fwd_list_base(_Fwd_list_base&&)): Default.
(forward_list<>()): Default.
(forward_list<>(forward_list&&)): Default.
(forward_list(forward_list&&, _Node_alloc_type&&, false_type)): New.
(forward_list(forward_list&&, _Node_alloc_type&&, true_type)): New.
(forward_list(forward_list&&, const _Alloc&)): Adapt to use latters.
* include/bits/forward_list.tcc
(_Fwd_list_base(_Fwd_list_base&&, _Node_alloc_type&&)): Adapt to use
_M_impl._M_head move assignment.
(forward_list<>::merge(forward_list<>&&, _Comp)): Likewise.
* testsuite/23_containers/forward_list/allocator/default_init.cc: New.

From-SVN: r256439

re PR c++/81055 (ICE with invalid initializer for array new)

/cp
2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/81055
* init.c (build_vec_init): Avoid building an INIT_EXPR with
error_mark_node as second argument.

/testsuite
2018-01-10  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/81055
* g++.dg/cpp0x/new2.C: New.

From-SVN: r256438

re PR c/82922 (Request: add -Wstrict-prototypes to -Wextra as K&R style is obsolescent)

PR c/82922

    runtime, syscall: use full prototypes in C code

    Based on patch by Martin Sebor.

    Reviewed-on: https://go-review.googlesource.com/86815

From-SVN: r256437

i386: Also adjust stack frame for stack slot alignment

We should also adjust stack_realign_offset for the largest alignment of
stack slot actually used when stack realignment isn't needed.  This is
required to keep stack frame properly aligned to satisfy the largest
alignment of stack slots.

Tested on Linux/i686 and Linux/x86-64.

gcc/

PR target/83735
* config/i386/i386.c (ix86_compute_frame_layout): Always adjust
stack_realign_offset for the largest alignment of stack slot
actually used.
(ix86_find_max_used_stack_alignment): New function.
(ix86_finalize_stack_frame_flags): Use it.  Set
max_used_stack_alignment if we don't realign stack.
* config/i386/i386.h (machine_function): Add
max_used_stack_alignment.

gcc/testsuite/

PR target/83735
* gcc.target/i386/pr83735.c: New test.

From-SVN: r256436

exp: remove exp/proxy and exp/terminal packages

    The exp/proxy package was removed from the master library in
    https://golang.org/cl/6461056 (August, 2012).

    The exp/terminal package was removed from the master library in
    https://golang.org/cl/5970044 (March, 2012).

    I'm not sure why they lingered in the gofrontend copy, but let's
    finally remove them now.

    Reviewed-on: https://go-review.googlesource.com/87138

From-SVN: r256435

[ARM] Add -mbranch-cost option, and update a few tests

2018-01-10  Christophe Lyon  <christophe.lyon@linaro.org>

gcc/
* config/arm/arm.opt (-mbranch-cost): New option.
* config/arm/arm.h (BRANCH_COST): Take arm_branch_cost into
account.

gcc/testsuite/
* lib/target-supports.exp (check_effective_target_branch_cost):
New function.
* gcc.dg/builtin-bswap-7.c: Use branch_cost effective target.
* gcc.dg/pr21643.c: Likewise.
* gcc.dg/pr46309.c: Likewise.
* gcc.dg/tree-ssa/phi-opt-11.c: Likewise.
* gcc.dg/tree-ssa/phi-opt-2.c: Likewise.
* gcc.dg/tree-ssa/reassoc-32.c: Likewise.
* gcc.dg/tree-ssa/reassoc-33.c: Likewise.
* gcc.dg/tree-ssa/reassoc-34.c: Likewise.
* gcc.dg/tree-ssa/reassoc-35.c: Likewise.
* gcc.dg/tree-ssa/reassoc-36.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-13.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-1.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-2.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-3.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-4.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-5.c: Likewise.
* gcc.dg/tree-ssa/ssa-ifcombine-ccmp-6.c: Likewise.

From-SVN: r256434

cmd/go: check for another GCC error message

    GCC always recognizes the -fsplit-stack option, but then tests whether
    it is supported by the selected target. If not, it reports
        cc1: error: ‘-fsplit-stack’ is not supported by this compiler configuration
    Check for that error message when deciding whether a compiler option works.

    Reviewed-on: https://go-review.googlesource.com/87137

From-SVN: r256433

rs6000: Wrap diff of immediates in const (PR83629)

In various of our 32-bit load_toc patterns we take the difference of
two immediates (labels) as a term to something bigger; but this isn't
canonical RTL, it needs to be wrapped in CONST.

PR target/83629
* config/rs6000/rs6000.md (load_toc_v4_PIC_2, load_toc_v4_PIC_3b,
load_toc_v4_PIC_3c): Wrap const term in CONST RTL.

testsuite/
PR target/83629
* gcc.target/powerpc/pr83629.c: New testcase.

From-SVN: r256432

runtime: fix makemap calls in __go_construct_map

    The signature of makemap changed with the update to 1.10beta1,
    but I forgot to update the call from C code.

    Reviewed-on: https://go-review.googlesource.com/87135

From-SVN: r256431

re PR c/78768 (-Walloca-larger-than and -Wformat-length warnings disabled by -flto)

2018-01-10  Richard Biener  <rguenther@suse.de>

PR testsuite/78768
* gcc.dg/pr78768.c: Un-XFAIL.

From-SVN: r256430

re PR debug/82425 (gcc.dg/guality/inline-params-2.c fail)

2018-01-10  Richard Biener  <rguenther@suse.de>

PR debug/82425
* gcc.dg/guality/inline-params-2.c: Un-XFAIL for slim LTO.

From-SVN: r256429

re PR debug/83765 (LTO bootstrap with Ada fails)

2018-01-10  Richard Biener  <rguenther@suse.de>

PR debug/83765
* dwarf2out.c (gen_subprogram_die): Hoist old_die && declaration
early out so it also covers the case where we have a non-NULL
origin.

From-SVN: r256428

Don't use permutes for single-element accesses (PR83753)

After cunrolling the inner loop, the remaining loop in the testcase
has a single 32-bit access and a group of 64-bit accesses.  We first
try to vectorise at 128 bits (VF 4), but decide not to for cost reasons.
We then try with 64 bits (VF 2) instead.  This means that the group
of 64-bit accesses uses a single-element vector, which is deliberately
supported as of r251538.  We then try to create "permutes" for these
single-element vectors and fall foul of:

      for (i = 0; i < 6; i++)
sel[i] += exact_div (nelt, 2);

in vect_grouped_store_supported, since nelt==1.

Maybe we shouldn't even be trying to vectorise statements in the
single-element case, and instead just copy the scalar statement
for each member of the group.  But until then, this patch treats
non-strided grouped accesses as VMAT_CONTIGUOUS if no permutation
is necessary.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
PR tree-optimization/83753
* tree-vect-stmts.c (get_group_load_store_type): Use VMAT_CONTIGUOUS
for non-strided grouped accesses if the number of elements is 1.

gcc/testsuite/
PR tree-optimization/83753
* gcc.dg/torture/pr83753.c: New test.

From-SVN: r256427

PR 83740 Wrong string length type in bounds check

This patch fixes up the formatting and corrects the PR number in the
ChangeLog for r256425.

gcc/fortran/ChangeLog:

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/83740
* trans-array.c (gfc_trans_array_ctor_element): Fix formatting.

From-SVN: r256426

PR 84740 Wrong string length type in bounds check

Need to convert the RHS to the type of the LHS when assigning.

Regtested on x86_64-pc-linux-gnu, committed as obvious.

gcc/fortran/ChangeLog:

2018-01-10  Janne Blomqvist  <jb@gcc.gnu.org>

PR fortran/84740
* trans-array.c (gfc_trans_array_ctor_element): Convert RHS to the
LHS type when assigning.

From-SVN: r256425

re PR target/81616 (Update -mtune=generic for the current Intel and AMD processors)

PR target/81616
* i386.c (ix86_vectorize_builtin_gather): Check TARGET_USE_GATHER.
* i386.h (TARGET_USE_GATHER): Define.
* x86-tune.def (X86_TUNE_USE_GATHER): New.

From-SVN: r256424

avx2-gather-1.c: Add -march.

* gcc.target/i386/avx2-gather-1.c: Add -march.
* gcc.target/i386/avx2-gather-2.c: Add -march.
* gcc.target/i386/avx2-gather-3.c: Add -march.
* gcc.target/i386/avx2-gather-4.c: Add -march.
* gcc.target/i386/avx2-gather-5.c: Add -march.
* gcc.target/i386/avx2-gather-6.c: Add -march.
* gcc.target/i386/avx512f-gather-1.c: Add -march.
* gcc.target/i386/avx512f-gather-2.c: Add -march.
* gcc.target/i386/avx512f-gather-3.c: Add -march.
* gcc.target/i386/avx512f-gather-4.c: Add -march.
* gcc.target/i386/avx512f-gather-5.c: Add -march.
* gcc.target/i386/avx512f-i32gatherd512-1.c: Add -march.
* gcc.target/i386/avx512f-i32gatherd512-2.c: Add -march.
* gcc.target/i386/avx512f-i32gatherpd512-1.c: Add -march.
* gcc.target/i386/avx512f-i32gatherpd512-2.c: Add -march.
* gcc.target/i386/avx512f-i32gatherps512-1.c: Add -march.

From-SVN: r256423

Clean up partitioning in try_optimize_cfg (PR bootstrap/82831).

2018-01-10  Martin Liska  <mliska@suse.cz>

PR bootstrap/82831
* basic-block.h (CLEANUP_NO_PARTITIONING): New define.
* bb-reorder.c (pass_reorder_blocks::execute): Do not clean up
partitioning.
* cfgcleanup.c (try_optimize_cfg): Fix up partitioning if
CLEANUP_NO_PARTITIONING is not set.

From-SVN: r256422

Mostly revert r254296

r254296 added support for (const ...) wrappers around vectors,
but in the end the agreement was to use a variable-length
encoding of CONST_VECTOR (and VECTOR_CST) instead.  This patch
therefore reverts the bits that are no longer needed.

The rtl.texi part isn't a full revert, since r254296 also updated the
documentation to mention unspecs in address calculations, and to relax
the requirement that the mode had to be Pmode.

2018-01-10  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* doc/rtl.texi: Remove documentation of (const ...) wrappers
for vectors, as a partial revert of r254296.
* rtl.h (const_vec_p): Delete.
(const_vec_duplicate_p): Don't test for vector CONSTs.
(unwrap_const_vec_duplicate, const_vec_series_p): Likewise.
* expmed.c (make_tree): Likewise.

Revert:
* common.md (E, F): Use CONSTANT_P instead of checking for
CONST_VECTOR.
* emit-rtl.c (gen_lowpart_common): Use const_vec_p instead of
checking for CONST_VECTOR.

From-SVN: r256421

re PR rtl-optimization/83575 (ICE: verify_flow_info failed (error: multiple hot/cold transitions found))

PR middle-end/83575
* predict.c (force_edge_cold): Handle in more sane way edges
with no prediction.

From-SVN: r256420

runtime: work around escaping closure in export_test.go

    When compiling runtime, it is not allowed for local variables
    and closures to be heap allocated. In one test, there is a go
    statement with a closure. In the gc compiler, it distinguishes
    capturing variable by value vs. by address, and rewrites it to
    passing the captured values as arguments. Currently we don't
    have this, and the escape analysis decides to heap allocate the
    closure and also the captured variables, which is not allowed.
    Work around it by passing the variables explicitly.

    This is in preparation of turning on escape analysis for the
    runtime.

    Reviewed-on: https://go-review.googlesource.com/86245

From-SVN: r256419

runtime: noescape some functions/variables

    This is in preparation of turning on escape analysis for the
    runtime.

    - In gccgo, systemstack is implemented with mcall, which is not
      go:noescape. Wrap the closure in noescape so the escape analysis
      does not think it escapes.

    - Mark some C functions go:noescape. They do not leak arguments.

    - Use noescape function to make a few local variables' addresses
      not escape. The escape analysis cannot figure out because they
      are assigned to pointer indirections.

    Reviewed-on: https://go-review.googlesource.com/86244

From-SVN: r256418

cmd/go: add AIX support

    For gccgo code avoid --whole-archive and -(.  Use -blibpath instead of
    -rpath.

    Reviewed-on: https://go-review.googlesource.com/86956

From-SVN: r256417

libgo: add aix build tags

    Reviewed-on: https://go-review.googlesource.com/86936

From-SVN: r256416

Daily bump.

From-SVN: r256415

compiler: use temporary variable for stack allocation

    Currently, allocation expression that can be allocated on stack
    is implemented with __builtin_alloca, which turns into
    __morestack_allocate_stack_space, which may call C malloc. This
    may be slow. Also if this happens during certain runtime
    functions (e.g. write barrier), bad things might happen (when
    the escape analysis is enabled for the runtime). Make a temporary
    variable on stack for the allocation instead.

    Also remove the write barrier in the assignment in building heap
    expression when it is stack allocated.

    Reviewed-on: https://go-review.googlesource.com/86242

From-SVN: r256412

compiler: set captured variable address to nonescape until further flooded

    The escape analysis models closures by flowing captured variable
    address to the closure node. However, the escape state for the
    address expressions remained unset as ESCAPE_UNKNOWN. This
    caused later passes to conclude that the address escapes. Fix this by
    setting its escape state to ESCAPE_NONE first. If it escapes
    (because the closure escapes), the flood phase will set its
    escape state properly.

    Reviewed-on: https://go-review.googlesource.com/86240

From-SVN: r256411

compiler: stack allocate defer thunk

    Defer statement may need to allocate a thunk. When it is not
    inside a loop, this can be stack allocated, as it runs before
    the function finishes.

    Reviewed-on: https://go-review.googlesource.com/85639

From-SVN: r256410

* es.po: Update.

From-SVN: r256408

compiler: make non-escaping Bound_method_expression not heap allocate

    Bound_method_expression needs a closure. Stack allocate the
    closure when it does not escape.

    Reviewed-on: https://go-review.googlesource.com/85638

From-SVN: r256407

compiler: move some escape check to Mark_address_taken

    Move some check of escape state earlier, from get_backend to
    Mark_address_taken. So we can reclaim escape analysis Nodes
    before kicking off the backend (not done in this CL). Also it
    makes it easier to check variables and closures do not escape
    when the escape analysis is run for the runtime package (also
    not done in this CL).

    Reviewed-on: https://go-review.googlesource.com/85735

From-SVN: r256406

compiler: support go:noescape cross package

    CL 83876 added support of go:noescape pragma, but it only works
    for functions called from the same package. The pragma did not
    take effect for exported functions that are not called from
    the same package. The reason is that top level function
    declarations are not traversed, and only reached from calls
    from other functions. This CL adds this support. The Traverse
    class is extended with a mode to traverse function declarations.

    Reviewed-on: https://go-review.googlesource.com/85637

From-SVN: r256405

compiler: stack allocate non-escaping makeslice

    If we're making a slice of constant size that does not need to
    escape, allocate it on stack.

    In lower, do not create temporaries for constant size makeslice,
    so that it is easier to detect the slice is constant size later.

    Reviewed-on: https://go-review.googlesource.com/85636

From-SVN: r256404

compiler: delay escaping sliced arrays

    Arrays that are sliced are set to escape in type checking, very
    early in compilation. The escape analysis runs later but cannot
    undo it. This CL changes it to not escape in the early stage.
    Later the escape analysis will make it escape when needed.

    Reviewed-on: https://go-review.googlesource.com/85635

From-SVN: r256403

i386: Add a test for PR target/78585

PR target/78585 has been fixed for GCC 7 by

commit 7ed04d053eead43d87dff40fb4e2904219afc4d5
Author: jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Wed Nov 30 13:02:07 2016 +0000

* config/i386/i386.c (dimode_scalar_chain::convert_op): Avoid
sharing the SUBREG rtx between move and following insn.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@243018 138bc75d-0d04-0410-961f-82ee72b054a4

PR target/78585:
* gcc.target/i386/pr78585.c: New test.

From-SVN: r256402

PR libstdc++/80276 fix pretty printers for array smart pointers

PR libstdc++/80276
* python/libstdcxx/v6/printers.py (SharedPointerPrinter)
(UniquePointerPrinter): Print correct template argument, not type of
the pointer.
(TemplateTypePrinter._recognizer.recognize): Handle failure to lookup
a type.
* testsuite/libstdc++-prettyprinters/cxx11.cc: Test unique_ptr of
array type.
* testsuite/libstdc++-prettyprinters/cxx17.cc: Test shared_ptr and
weak_ptr of array types.

From-SVN: r256400

os/signal/internal/pty: build on Solaris

    Patch from Rainer Orth.

    Reviewed-on: https://go-review.googlesource.com/87037

From-SVN: r256399

compiler: make top-level decl for address-taken non-escaping locals

    If a local variable's address is taken and passed out of its
    lexical scope, GCC backend may reuse the stack slot for the
    variable, not knowing it is still live through a pointer. In
    this case, we create a top-level temporary variable and let the
    user-defined variable refer to the temporary variable as its
    storage location. As the temporary variable is declared at the
    top level, its stack slot will remain live throughout the
    function.

    Reviewed-on: https://go-review.googlesource.com/84675

* go-gcc.cc (local_variable): Add decl_var parameter.

From-SVN: r256398

re PR c++/83734 (ice in cxx_eval _statement_list, at cp/constexpr.c:3869)

PR c++/83734
* constexpr.c (cxx_eval_statement_list): Ignore DEBUG_BEGIN_STMTs
in STATEMENT_LIST.  Remove unneeded assert.

* g++.dg/cpp0x/pr83734.C: New test.

From-SVN: r256397

re PR libstdc++/83709 (Inserting duplicates into an unordered associative containers causes the container to invalidate iterators)

2018-01-09  François Dumont  <fdumont@gcc.gnu.org>

PR libstdc++/83709
* include/bits/hashtable_policy.h
(__distance_fwd(_Iterator, _Iterator, input_iterator_tag)): Return 1 if
__first != __last.
(_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, true_type)): New.
(_Insert_base::_M_insert_range(_Ite, _Ite, _NodeGetter, false_type)):
Add false_type parameter.
(_Insert_base::insert): Adapt.
* include/bits/hashtable.h (_Hashtable::operator=(initializzr_list<>)):
Adapt.
(_Hashtable::_M_insert(_Arg&&, const _NodeGen&, true_type, size_t)):
 Add __n_elt parameter, defaulted to 1.
(_Hashtable::_M_insert_unique_node): Likewise. Use it to call rehash
policy _M_need_rehash.
(_Hashtable::_M_merge_unique): Pass target number of elements to add to
produce only 1 rehash if necessary.
* testsuite/23_containers/unordered_map/insert/83709.cc: New.
* testsuite/23_containers/unordered_set/insert/83709.cc: New.

From-SVN: r256396

altivec.md (p8_vmrgow): Add support for V2DI, V2DF, V4SI, V4SF types.

gcc/ChangeLog:

2018-01-09  Carl Love  <cel@us.ibm.com>

* config/rs6002/altivec.md (p8_vmrgow): Add support for V2DI, V2DF,
V4SI, V4SF types.
(p8_vmrgew): Add support for V2DI, V2DF, V4SF types.
* config/rs6000/rs6000-builtin.def: Add definitions for FLOAT2_V2DF,
VMRGEW_V2DI, VMRGEW_V2DF, VMRGEW_V4SF, VMRGOW_V4SI, VMRGOW_V4SF,
VMRGOW_V2DI, VMRGOW_V2DF.  Remove definition for VMRGOW.
* config/rs6000/rs6000-c.c (VSX_BUILTIN_VEC_FLOAT2,
P8V_BUILTIN_VEC_VMRGEW, P8V_BUILTIN_VEC_VMRGOW):  Add definitions.
* config/rs6000/rs6000-protos.h: Add extern defition for
rs6000_generate_float2_double_code.
* config/rs6000/rs6000.c (rs6000_generate_float2_double_code): Add
function.
* config/rs6000/vsx.md (vsx_xvcdpsp): Add define_insn.
(float2_v2df): Add define_expand.

gcc/testsuite/ChangeLog:

2017-01-09 Carl Love  <cel@us.ibm.com>

* gcc.target/powerpc/builtins-1.c (main): Add tests for vec_mergee and
vec_mergeo builtins with float, double, long long, unsigned long long,
bool long long  arguments.
* gcc.target/powerpc/builtins-3-runnable.c (main): Add test for
vec_float2 with double arguments.
* gcc.target/powerpc/builtins-mergew-mergow.c: New runable test for the
vec_mergew and vec_mergow builtins.

From-SVN: r256395

compiler: add escape analysis debug hash

    Add a flag -fgo-debug-escape-hash for debugging escape analysis.
    It takes a binary string, optionally led by a "-", as argument.
    When specified, the escape analysis runs only on functions whose
    name is hashed to a value with matching suffix. The "-" sign
    negates the match, i.e. the analysis runs only on functions with
    non-matching hash.

    Reviewed-on: https://go-review.googlesource.com/83878

* lang.opt (fgo-debug-escape-hash): New option.
* go-c.h (struct go_create_gogo_args): Add debug_escape_hash
field.
* go-lang.c (go_langhook_init): Set debug_escape_hash field.
* gccgo.texi (Invoking gccgo): Document -fgo-debug-escape-hash.

From-SVN: r256393

Part of the fix for pr82190 got undone by my newer memcmp checkin.

From-SVN: r256392

re PR fortran/83742 (ICE in gfc_is_simply_contiguous, at fortran/expr.c:5323)

2018-01-09  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83742
* expr.c (gfc_is_simply_contiguous): Check for NULL pointer.

2018-01-09  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/83742
* gfortran.dg/contiguous_6.f90: New test.

From-SVN: r256391

PR libstdc++/59253 Improve pretty printers for smart pointers

PR libstdc++/59253 (partial)
* python/libstdcxx/v6/printers.py (SmartPtrIterator): Common iterator
type for pointer stored by shared_ptr, weak_ptr and unique_ptr.
(SharedPointerPrinter, UniquePointerPrinter): Treat stored values as
children.
* testsuite/libstdc++-prettyprinters/cxx11.cc: Update expected output
of unique_ptr printer.
* testsuite/libstdc++-prettyprinters/shared_ptr.cc: Update expected
output of shared_ptr printer.

From-SVN: r256390

compiler: use macro Unordered_map instead of std::unordered_map

    Per gcc/go/go-system.h, this is what it is supposed to be, to
    support wider platforms.

    Reviewed-on: https://go-review.googlesource.com/85975

From-SVN: r256389

Forgot to commit changelog entry:

2018-01-08  Aaron Sawdey  <acsawdey@linux.vnet.ibm.com>

* config/rs6000/rs6000-string.c (do_load_for_compare_from_addr): New
function.
(do_ifelse): New function.
(do_isel): New function.
(do_sub3): New function.
(do_add3): New function.
(do_load_mask_compare): New function.
(do_overlap_load_compare): New function.
(expand_compare_loop): New function.
(expand_block_compare): Call expand_compare_loop() when appropriate.
* config/rs6000/rs6000.opt (-mblock-compare-inline-limit): Change
option description.
(-mblock-compare-inline-loop-limit): New option.

From-SVN: r256388

re PR rtl-optimization/83628 (performance regression when accessing arrays on alpha)

PR target/83628
* combine.c (force_int_to_mode) <case ASHIFT>: Use mode instead of
op_mode in the force_to_mode call.

From-SVN: r256387

[AArch64] Use vec_perm_indices helper routines

This patch makes the AArch64 vec_perm_const code use the new
vec_perm_indices routines, instead of checking each element individually.
This means that they extend naturally to variable-length vectors.

Also, aarch64_evpc_dup was the only function that generated rtl when
testing_p is true, and that looked accidental.  The patch adds the
missing check and then replaces the gen_rtx_REG/start_sequence/
end_sequence stuff with an assert that no rtl is generated.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_evpc_trn): Use d.perm.series_p
instead of checking each element individually.
(aarch64_evpc_uzp): Likewise.
(aarch64_evpc_zip): Likewise.
(aarch64_evpc_ext): Likewise.
(aarch64_evpc_rev): Likewise.
(aarch64_evpc_dup): Test the encoding for a single duplicated element,
instead of checking each element individually.  Return true without
generating rtl if
(aarch64_vectorize_vec_perm_const): Use all_from_input_p to test
whether all selected elements come from the same input, instead of
checking each element individually.  Remove calls to gen_rtx_REG,
start_sequence and end_sequence and instead assert that no rtl is
generated.

From-SVN: r256385

[AArch64] Reject (high (const (plus anchor offset)))

The aarch64_legitimate_constant_p tests for HIGH and CONST seem
to be the wrong way round: (high (const ...)) is valid rtl that
could be passed in, but (const (high ...)) isn't.  As it stands,
we disallow anchor+offset but allow (high anchor+offset).

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* config/aarch64/aarch64.c (aarch64_legitimate_constant_p): Fix
order of HIGH and CONST checks.

From-SVN: r256384

Fix permute handling when vectorising scatters

As mentioned in https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01575.html ,
the scatter handling in vectorizable_store seems to be dead code at the
moment.  Enabling it with the vect_analyze_data_ref_access part of
that patch triggered an ICE in the avx512f-scatter-*.c tests (which
previously didn't use scatters).  The problem was that the NARROW
and WIDEN handling uses permute_vec_elements to marshal the inputs,
and permute_vec_elements expected the lhs of the stmt to be an SSA_NAME,
which of course it isn't for stores.

This patch makes permute_vec_elements create a fresh variable in this case.

2018-01-09  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
* tree-vect-stmts.c (permute_vec_elements): Create a fresh variable
if the destination isn't an SSA_NAME.

From-SVN: r256383

re PR tree-optimization/83668 (wrong code with -O -fno-tree-dominator-opts -fgraphite-identity)

2018-01-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83668
* graphite.c (canonicalize_loop_closed_ssa): Add edge argument,
move prologue...
(canonicalize_loop_form): ... here, renamed from ...
(canonicalize_loop_closed_ssa_form): ... this and amended to
swap successor edges for loop exit blocks to make us use
the RPO order we need for initial schedule generation.

* gcc.dg/graphite/pr83668.c: New testcase.

From-SVN: r256381

Fix folding of Inf/NaN comparisons for -ftrapping-math (PR tree-optimization/64811).

The folding of comparisons against Inf (to constants or comparisons
with the maximum finite value) has various cases where it introduces
or loses "invalid" exceptions for comparisons with NaNs.

Folding x > +Inf to 0 should not be about HONOR_SNANS - ordered
comparisons of both quiet and signaling NaNs should raise invalid.

x <= +Inf is not the same as x == x, because again that loses an
exception (equality comparisons don't raise exceptions except for
signaling NaNs).

x == +Inf is not the same as x > DBL_MAX, and a similar issue applies
with the x != +Inf case - that transformation causes a spurious
exception.

This patch fixes the conditionals on the folding to avoid such
introducing or losing exceptions.

Bootstrapped with no regressions on x86_64-pc-linux-gnu (where the
cases involving spurious exceptions wouldn't have failed anyway before
GCC 8 because of unordered comparisons wrongly always having formerly
been used by the back end).  Also tested for powerpc-linux-gnu
soft-float that this fixes many glibc math/ test failures that arose
in that configuration because this folding affected the IBM long
double support in libgcc (no such failures appeared for hard-float
because of the bug of powerpc hard-float always using unordered
comparisons) - some failures remain, but I believe them to be
unrelated.

PR tree-optimization/64811
gcc:
* match.pd: When optimizing comparisons with Inf, avoid
introducing or losing exceptions from comparisons with NaN.

gcc/testsuite:
* gcc.dg/torture/inf-compare-1.c, gcc.dg/torture/inf-compare-2.c,
gcc.dg/torture/inf-compare-3.c, gcc.dg/torture/inf-compare-4.c,
gcc.dg/torture/inf-compare-5.c, gcc.dg/torture/inf-compare-6.c,
gcc.dg/torture/inf-compare-7.c, gcc.dg/torture/inf-compare-8.c:
New tests.
* gcc.c-torture/execute/ieee/fp-cmp-7.x: New file.

From-SVN: r256380

Add gcc_assert about stack alignment (PR sanitizer/82517).

2018-01-09  Martin Liska  <mliska@suse.cz>

PR sanitizer/82517
* asan.c (shadow_mem_size): Add gcc_assert.

From-SVN: r256378

re PR target/79883 (avr i18n: untranslated "interrupt" or "signal")

PR target/79883
* gcc.target/avr/torture/pr57631.c (dg-warning): Quote 'signal'.

From-SVN: r256376

re PR target/82641 (Unable to enable crc32 for a certain function with target attribute on ARM (aarch32))

2018-01-09  Tamar Christina  <tamar.christina@arm.com>

        PR target/82641
        * gcc.target/arm/pragma_fpu_attribute.c: Rewrite to use
        no NEON and require softfp or hard float-abi.
        * gcc.target/arm/pragma_fpu_attribute_2.c: Likewise.

From-SVN: r256375

typo

From-SVN: r256374

Don't save registers in main().

gcc/
Don't save registers in main().
PR target/83737
* doc/invoke.texi (AVR Options) [-mmain-is-OS_task]: Document it.
* config/avr/avr.opt (-mmain-is-OS_task): New target option.
* config/avr/avr.c (avr_set_current_function): Don't error if
naked, OS_task or OS_main are specified at the same time.
(avr_function_ok_for_sibcall): Don't disable sibcalls for OS_task,
OS_main.
(avr_insert_attributes) [-mmain-is-OS_task] <main>: Add OS_task
attribute.
* common/config/avr/avr-common.c (avr_option_optimization_table):
Switch on -mmain-is-OS_task for optimizing compilations.

From-SVN: r256373

re PR tree-optimization/83572 ([graphite] ICE in verify_dominators, at dominance.c:1184 (error: dominator of 7 should be 15, not 13))

2018-01-09  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83572
* graphite.c: Include cfganal.h.
(graphite_transform_loops): Connect infinite loops to exit
and remove fake edges at the end.

* gcc.dg/graphite/pr83572.c: New testcase.

From-SVN: r256372

* ipa-inline.c (edge_badness): Revert accidental checkin.

From-SVN: r256370

re PR c++/80763 (-O3 causes error: inline clone in same comdat group list)

PR ipa/80763
* ipa-comdats.c (set_comdat_group): Only set comdat group of real
symbols; not inline clones.

From-SVN: r256369

re PR target/83507 (ICE in internal_dfa_insn_code_* for powerpc targets)

PR target/83507
* modulo-sched.c (schedule_reg_moves): Punt if we'd need to move
hard registers.  Formatting fixes.

* gcc.dg/sms-13.c: New test.

From-SVN: r256368

re PR preprocessor/83722 (the ICE dumper doesn't comment-out some error messages)

PR preprocessor/83722
* gcc.c (try_generate_repro): Pass
&temp_stderr_files[RETRY_ICE_ATTEMPTS - 1] rather than
&temp_stdout_files[RETRY_ICE_ATTEMPTS - 1] as last argument to
do_report_bug.

From-SVN: r256367

re PR fortran/83741 (ICE in gfc_match_allocate, at fortran/match.c:4074)

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

PR Fortran/83741
* gfortran.dg/allocate_assumed_charlen_3.f90: New test.

From-SVN: r256366

libgo: update to Go1.10beta1

    Update the Go library to the 1.10beta1 release.

    Requires a few changes to the compiler for modifications to the map
    runtime code, and to handle some nowritebarrier cases in the runtime.

    Reviewed-on: https://go-review.googlesource.com/86455

gotools/:
* Makefile.am (go_cmd_vet_files): New variable.
(go_cmd_buildid_files, go_cmd_test2json_files): New variables.
(s-zdefaultcc): Change from constants to functions.
(noinst_PROGRAMS): Add vet, buildid, and test2json.
(cgo$(EXEEXT)): Link against $(LIBGOTOOL).
(vet$(EXEEXT)): New target.
(buildid$(EXEEXT)): New target.
(test2json$(EXEEXT)): New target.
(install-exec-local): Install all $(noinst_PROGRAMS).
(uninstall-local): Uninstasll all $(noinst_PROGRAMS).
(check-go-tool): Depend on $(noinst_PROGRAMS).  Copy down
objabi.go.
(check-runtime): Depend on $(noinst_PROGRAMS).
(check-cgo-test, check-carchive-test): Likewise.
(check-vet): New target.
(check): Depend on check-vet.  Look at cmd_vet-testlog.
(.PHONY): Add check-vet.
* Makefile.in: Rebuild.

From-SVN: r256365

match.c (gfc_match_allocate): Check for NULL pointer.

2018-01-08  Steven G. Kargl  <kargl@gcc.gnu.org>

* match.c (gfc_match_allocate): Check for NULL pointer.

From-SVN: r256364

RISC-V: Fix -msave-restore bug with sibcalls.

2018-01-08  Monk Chiang  <sh.chiang04@gmail.com>
    Kito Cheng  <kito.cheng@gmail.com>

gcc/
* config/riscv/riscv.c (machine_function::is_leaf): Remove field.
(riscv_leaf_function_p): Delete.
(riscv_function_ok_for_sibcall): Return false when TARGET_SAVE_RESTORE.

2018-01-08  Chih-Mao Chen <pkmx.tw@gmail.com>
    Monk Chiang  <sh.chiang04@gmail.com>

gcc/testsuite/
* gcc.target/riscv/save-restore-1.c: New.

From-SVN: r256362

Daily bump.

From-SVN: r256361

re PR target/83677 (PPC: The xxpermr instruction is not generated correctly)

[gcc]

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR target/83677
* config/rs6000/altivec.md (*altivec_vpermr_<mode>_internal):
Reverse order of second and third operands in first alternative.
* config/rs6000/rs6000.c (rs6000_expand_vector_set): Reverse order
of first and second elements in UNSPEC_VPERMR vector.
(altivec_expand_vec_perm_le): Likewise.

[gcc/testsuite]

2018-01-08  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

PR target/83677
* gcc.target/powerpc/pr83677.c: New file.

From-SVN: r256358

quad-float128.h (IBM128_TYPE): Explicitly use __ibm128, instead of trying to use long double.

2018-01-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/quad-float128.h (IBM128_TYPE): Explicitly use
__ibm128, instead of trying to use long double.
(CVT_FLOAT128_TO_IBM128): Use TFtype instead of __float128 to
accomidate -mabi=ieeelongdouble multilibs.
(CVT_IBM128_TO_FLOAT128): Likewise.
* config/rs6000/ibm-ldouble.c (IBM128_TYPE): New macro to define
the appropriate IBM extended double type.
(__gcc_qadd): Change all occurances of long double to IBM128_TYPE.
(__gcc_qsub): Likewise.
(__gcc_qmul): Likewise.
(__gcc_qdiv): Likewise.
(pack_ldouble): Likewise.
(__gcc_qneg): Likewise.
(__gcc_qeq): Likewise.
(__gcc_qne): Likewise.
(__gcc_qge): Likewise.
(__gcc_qle): Likewise.
(__gcc_stoq): Likewise.
(__gcc_dtoq): Likewise.
(__gcc_itoq): Likewise.
(__gcc_utoq): Likewise.
(__gcc_qunord): Likewise.
* config/rs6000/_mulkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(__mulkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/_divkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(FABS): Likewise.
(__divkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): Likewise.
* config/rs6000/trunctfkf2-sw.c (__trunctfkf2_sw): Likewise.

From-SVN: r256354

quad-float128.h (IBM128_TYPE): Explicitly use __ibm128, instead of trying to use long double.

2018-01-08  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/quad-float128.h (IBM128_TYPE): Explicitly use
__ibm128, instead of trying to use long double.
(CVT_FLOAT128_TO_IBM128): Use TFtype instead of __float128 to
accomidate -mabi=ieeelongdouble multilibs.
(CVT_IBM128_TO_FLOAT128): Likewise.
* config/rs6000/ibm-ldouble.c (IBM128_TYPE): New macro to define
the appropriate IBM extended double type.
(__gcc_qadd): Change all occurances of long double to IBM128_TYPE.
(__gcc_qsub): Likewise.
(__gcc_qmul): Likewise.
(__gcc_qdiv): Likewise.
(pack_ldouble): Likewise.
(__gcc_qneg): Likewise.
(__gcc_qeq): Likewise.
(__gcc_qne): Likewise.
(__gcc_qge): Likewise.
(__gcc_qle): Likewise.
(__gcc_stoq): Likewise.
(__gcc_dtoq): Likewise.
(__gcc_itoq): Likewise.
(__gcc_utoq): Likewise.
(__gcc_qunord): Likewise.
* config/rs6000/_mulkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(__mulkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/_divkc3.c (toplevel): Include soft-fp.h and
quad-float128.h for the definitions.
(COPYSIGN): Use the f128 version instead of the q version.
(INFINITY): Likewise.
(FABS): Likewise.
(__divkc3): Use TFmode/TCmode for float128 scalar/complex types.
* config/rs6000/extendkftf2-sw.c (__extendkftf2_sw): Likewise.
* config/rs6000/trunctfkf2-sw.c (__trunctfkf2_sw): Likewise.

From-SVN: r256353