On AIX:
    * mmap does not allow to map an already mapped range,
    * mmap range start at 0x30000000 for 32 bits processes,
    * mmap range start at 0x70000000_00000000 for 64 bits processes
    
    This is adapted from change 37845.
    
    Issue golang/go#19200
    
    Reviewed-on: https://go-review.googlesource.com/46772

From-SVN: r249713

    
    Fixes required now that we #include <linux/ptrace.h> in sysinfo.c.
    
    Patch by Andreas Krebbel.
    
    Reviewed-on: https://go-review.googlesource.com/46839

From-SVN: r249712

	* pt.c (tsubst_decl <FUNCTION_DECL>): Move var decls to
	initialization point.  Don't unnecessarily check for ctor name.

From-SVN: r249709

	PR libstdc++/80187
	* include/std/variant (variant::variant, variant::~variant,
	variant::operator=): Implement triviality forwarding for four
	special member functions.
	* testsuite/20_util/variant/compile.cc: Tests.

From-SVN: r249706

2017-06-27  Andrew Pinski  <apinski@cavium.com>

        * match.pd (X >/>=/</<= 0 ? 1.0 : -1.0): New patterns.
        (X * copysign (1.0, X)): New pattern.
        (X * copysign (1.0, -X)): New pattern.
        (copysign (-1.0, CST)): New pattern.

2017-06-27  Andrew Pinski  <apinski@cavium.com>

        * gcc.dg/tree-ssa/copy-sign-1.c: New testcase.
        * gcc.dg/tree-ssa/copy-sign-2.c: New testcase.
        * gcc.dg/tree-ssa/mult-abs-2.c: New testcase.

From-SVN: r249704

genmultilib computes combination_space, a list of all combinations of
options in MULTILIB_OPTIONS that might have multilibs built for them
(some of which may end up not having multilibs built for them, and
some of those may end up being mapped to other multilibs with
MULTILIB_REUSE).  It is then used to validate the right hand part of
MULTILIB_REUSE rules, checking with expr that combination_space
matches a basic regular expression derived from that right hand part.

There are two problems with this approach to validation:

* It requires that right hand part to have options in the same order
  as in MULTILIB_OPTIONS, in contradiction to the documentation of
  MULTILIB_REUSE saying that order does not matter there.

* combination_space can be so large that the expr call fails with an
  E2BIG error.  I have a local ARM configuration with 40 multilibs but
  3840 combinations of options from MULTILIB_OPTIONS (so 3839 listed
  in combination_space, since it doesn't list the default multilib)
  and 996 MULTILIB_REUSE rules.  This generates a combination_space
  string longer than the Linux kernel's MAX_ARG_STRLEN (PAGE_SIZE *
  32, the limit on the length of a single argv string), so that expr
  cannot be run.

This patch changes the validation approach to generate a much shorter
extended regular expression for any sequence of multilib options in
any order, and uses that for the validation instead.

Tested with a build for arm-none-eabi --with-multilib-list=aprofile
(as a configuration that uses MULTILIB_REUSE).

	* genmultilib (combination_space): Remove variable.
	Validate reuse rules against regular expression for any sequence
	of multilib options in any order.

From-SVN: r249703

2017-06-19  Michael Collison  <michael.collison@arm.com>

	* config/aarch64/aarch64-simd.md (aarch64_combine<mode>): Directly
	call aarch64_split_simd_combine.
	* (aarch64_combine_internal<mode>): Delete pattern.
	* config/aarch64/aarch64.c (aarch64_split_simd_combine):
	Allow register and subreg operands.

From-SVN: r249702

	* cp-tree.h (CLASSTYPE_DESTRUCTORS): Rename to ...
	(CLASSTYPE_DESTRUCTOR): ... this.
	* class.c (accessible_nvdtor_p)
	maybe_warn_about_overly_private_class,
	add_implicitly_declared_members,
	clone_constructors_and_destructors, type_has_virtual_destructor):
	Adjust for CLASSTYPE_DESTRUCTOR.
	(deduce_noexcept_on_destructors): Absorb into ...
	(check_bases_and_members): ... here.
	* except.c (dtor_nothrow): Adjust for CLASSTYPE_DESTRUCTOR.
	* init.c (build_delete): Likewise.
	* parser.c (cp_parser_lookup_name): Likewise.
	* pt.c (check_explicit_specialization): Likewise.
	* rtti.c (emit_support_tinfos): Likewise.
	* search.c (lookup_fnfields_idx_nolazy): Likewise.
(--This line, and those below, will be ignored--

M    cp/cp-tree.h
M    cp/search.c
M    cp/init.c
M    cp/class.c
M    cp/rtti.c
M    cp/except.c
M    cp/ChangeLog
M    cp/pt.c
M    cp/parser.c

From-SVN: r249701

	PR libstdc++/81221
	* testsuite/25_algorithms/sample/81221.cc: Disable except for
	check-parallel.

From-SVN: r249697

From-SVN: r249696

2017-06-27  Tom de Vries  <tom@codesourcery.com>

	* plugin/plugin-nvptx.c (notify_var): New function.
	(nvptx_exec): Use notify_var for GOMP_OPENACC_DIM.

From-SVN: r249695

2017-06-27  Tom de Vries  <tom@codesourcery.com>

	* env.c (parse_unsigned_long_1): Factor out of ...
	(parse_unsigned_long): ... here.
	(parse_int_1): Factor out of ...
	(parse_int): ... here.
	(parse_int_secure): New function.
	(initialize_env): Use parse_int_secure for GOMP_DEBUG.
	* secure_getenv.h: Factor out of ...
	* plugin/plugin-hsa.c: ... here.
	* testsuite/libgomp.oacc-c-c++-common/gomp-debug-env.c: New test.

From-SVN: r249694

	* cp-tree.h (lang_identifier): Remove class_template_info field.
	(IDENTIFIER_TEMPLATE): Delete.
	* name-lookup.c (constructor_name_full): Subsume into ...
	(constructor_name): ... here.  Don't check IDENTIFIER_TEMPLATE.
	(constructor_name_p): Likewise.
	* mangle.c (write_source_name): Likewise.
	* ptree.c (cxx_print_identifier): Likewise.

From-SVN: r249693

	PR libstdc++/81221
	* include/bits/stl_algo.h (sample): Qualify with _GLIBCXX_STD_A not
	std.
	* testsuite/25_algorithms/sample/81221.cc: New.

From-SVN: r249692

2017-06-27  Jerome Lambourg  <lambourg@adacore.com>

	* config/i386/vxworks.h (ASM_SPEC): Remove definition. No target
	specific need, just fallback on defaults.
	(ASM_OUTPUT_ALIGNED_BSS): Add #undef before #define.

From-SVN: r249691

2017-06-27  Jerome Lambourg  <lambourg@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

	* config/i386/vxworks.h (DBX_REGISTER_NUMBER): Pick distinct
	map for 64bits.
	(TARGET_OS_CPP_BUILTINS): builtin_define CPU to X86_64 for 64bit
	targets. Pick a default if no particular attempt applied.
	(STACK_CHECK_PROTECT): Double for 64bit targets, which have
	larger contexts.


Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r249690

2017-06-27  Jerome Lambourg  <lambourg@adacore.com>

	gcc/
	* config.gcc (i*86-wrs-vxworks7): Handle new acceptable triplet.
	(x86_64-wrs-vxworks7): Likewise.

	libgcc/
	* config.host (i*86-wrs)vxworks7): Handle new acceptable triplet.
	(x86_64-wrs-vxworks7): Likewise.

From-SVN: r249689

2017-06-27  Olivier Hainque  <hainque@adacore.com>

	* config/t-vxworks7: New file.
	* config.host (*-*-vxworks7): Use it.

From-SVN: r249688

	PR sanitizer/81223
	* ubsan.c (instrument_null): Check get_base_address's result for null.

	* gcc.dg/ubsan/pr81223.c: New test.

From-SVN: r249687

2017-06-27  Marc Glisse  <marc.glisse@inria.fr>

gcc/
	* match.pd ((A+-B)+(C-A), (A+B)-(A-C)): New transformations.

gcc/testsuite/
	* gcc.dg/tree-ssa/assoc-1.c: New file.

From-SVN: r249686

2017-06-27  Marc Glisse  <marc.glisse@inria.fr>

	* builtin-types.def (BT_FENV_T_PTR, BT_CONST_FENV_T_PTR,
	BT_FEXCEPT_T_PTR, BT_CONST_FEXCEPT_T_PTR): New primitive types.
	(BT_FN_INT_FENV_T_PTR, BT_FN_INT_CONST_FENV_T_PTR,
	BT_FN_INT_FEXCEPT_T_PTR_INT, BT_FN_INT_CONST_FEXCEPT_T_PTR_INT):
	New function types.
	* builtins.def (BUILT_IN_FECLEAREXCEPT, BUILT_IN_FEGETENV,
	BUILT_IN_FEGETEXCEPTFLAG, BUILT_IN_FEGETROUND,
	BUILT_IN_FEHOLDEXCEPT, BUILT_IN_FERAISEEXCEPT,
	BUILT_IN_FESETENV, BUILT_IN_FESETEXCEPTFLAG,
	BUILT_IN_FESETROUND, BUILT_IN_FETESTEXCEPT,
	BUILT_IN_FEUPDATEENV): New builtins.
	* tree-core.h (TI_FENV_T_PTR_TYPE, TI_CONST_FENV_T_PTR_TYPE,
	TI_FEXCEPT_T_PTR_TYPE, TI_CONST_FEXCEPT_T_PTR_TYPE): New entries.
	* tree.h (fenv_t_ptr_type_node, const_fenv_t_ptr_type_node,
	fexcept_t_ptr_type_node, const_fexcept_t_ptr_type_node): New
	macros.
	(builtin_structptr_types): Adjust size.
	* tree.c (builtin_structptr_types): Add four entries.

From-SVN: r249685

2017-06-27  Jerome Lambourg  <lambourg@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

	* config/vxworks.h (VXWORKS_LIB_SPEC): Incorporate ...
	(TLS_SYM): New local macro, forcing reference to __tls__ on
	link command lines for VxWorks 7 RTPs, triggering initialization
	of tlsLib.
	(VXWORKS_HAVE_TLS): New macro. State whether the target VxWorks
	OS features TLS support, true for RTPs on VxWorks 7.
	* config/vxworks.c (vxworks_override_options): Setup emutls
	accordingly.


Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r249684

predict.c (test_prediction_value_range): Use -1U instead of -1 to avoid narrowing conversion warning.

	* predict.c (test_prediction_value_range): Use -1U instead of -1
	to avoid narrowing conversion warning.
	* dumpfile.c (dump_options): Wrap all value into dump_flags_t cast
	to avoid narrowing conversion warning.
	* opt-functions.awk (var_ref): Return (unsigned short) -1 instead of
	-1.
	* optc-gen.awk (END): Expect (unsigned short) -1 instead of -1.

From-SVN: r249683

2017-06-27  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/62046
	* g++.dg/parse/catch2.C: New.

From-SVN: r249682

2017-06-27  Jerome Lambourg  <lambourg@adacore.com>

	* config/vxworks.h (VXWORKS_LIBS_RTP): Alternative definition for
  	64bit configurations.
  	(PTR_DIFF_TYPE): Alternative definition for TARGET_LP64.
  	(SIZE_TYPE): Likewise.
  	* config/vxworks.c (vxworks_emutls_var_fields): Use
  	long_unsigned_type_node instead of unsigned_type_node as the offset
	field type, which is "pointer" mode in emutls.c.

From-SVN: r249681

	PR sanitizer/81209
	* ubsan.c (ubsan_encode_value): Initialize DECL_CONTEXT on var.

	* g++.dg/ubsan/pr81209.C: New test.

From-SVN: r249678

	PR middle-end/81207
	* gimple-fold.c (replace_call_with_call_and_fold): Handle
	gimple_vuse copying separately from gimple_vdef copying.

	* gcc.c-torture/compile/pr81207.c: New test.

From-SVN: r249677

	PR bootstrap/81216
	* parser.c (cp_parser_already_scoped_statement): Initialize
	LOC_AFTER_LABELS.

	* g++.dg/warn/Wmultistatement-macros-1.C: New test.

From-SVN: r249676

2017-06-27  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	* value-prof.c (free_hist): Remove call to memset and the enclosing if
	condition.

From-SVN: r249675

    
    Copy all the misc/cgo files from the gc toolchain into libgo/misc.
    
    These will be used for testing purposes by later changes to the
    gotools directory.
    
    Reviewed-on: https://go-review.googlesource.com/46721

From-SVN: r249674

From-SVN: r249673

	* Makefile.am (s-zdefaultcc): Don't record $(bindir) for defaultCC
	or defaultCXX.
	* Makefile.in: Rebuild.

From-SVN: r249669

	libgfortran/
	PR libfortran/81195
	* io/unit.c (get_unit): Call __gthread_mutex_lock before newunit_stack
	and newunit_tos references.  Call __gthread_mutex_unlock afterward.

From-SVN: r249667

	* pt.c (unify_bound_ttp_args): Restore old logic for C++14 and down.

From-SVN: r249664

    
    It's now defined by mksysinfo.sh.
    
    Patch by Uros Bizjak.
    
    Reviewed-on: https://go-review.googlesource.com/46712

From-SVN: r249663

    
    Avoid https://sourceware.org/bugzilla/show_bug.cgi?id=762.
    
    Patch by Andreas Schwab.
    
    Reviewed-on: https://go-review.googlesource.com/46711

From-SVN: r249662

gcc/cp/ChangeLog:

	PR c++/81169
	* call.c (maybe_warn_class_memaccess): Preserve explicit conversions
	to detect casting away cv-qualifiers.

gcc/testsuite/ChangeLog:

	PR c++/81169
	* g++.dg/Wclass-memaccess-2.C: New test.

From-SVN: r249660

2017-06-26  Jerome Lambourg  <lambourg@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

	* config.gcc (*-*-vxworks*): Add TARGET_VXWORKS7=1 to tm_defines
	for all vxworks7 targets.
	* config/vxworks.h (TARGET_VXWORKS7): If not defined, define to 0.
	(VXWORKS_ADDITIONAL_CPP_SPEC): Alternative definition for VXWORKS7.
	(VXWORKS_LIBS_RTP, VXWORKS_LIBS_RTP_DIR): New macros, allowing
	variations for VX6/VX7 and 32/64bits later on in ...
	(VXWORKS_LIB_SPEC): Leverage new macros.
	(VXWORKS_OS_CPP_BUILTINS): Define _VSB_CONFIG_FILE for VXWORKS7,
	as well as _ALLOW_KEYWORD_MACROS when "inline" is not a keyword.


Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r249659

	gcc/cp/
	* cp-tree.h (lang_decl_fn): Remove assignment_operator_p field.
	(DECL_COMPLETE_CONSTRUCTOR_P): Directly compare
	identifier.
	(DECL_BASE_CONSTRUCTOR_P, DECL_COMPLETE_DESTRUCTOR_P)
	DECL_BASE_DESTRUCTOR_P, DECL_DELETING_DESTRUCTOR_P): Likewise.
	(DECL_ASSIGNMENT_OPERATOR_P): Use IDENTIFIER_ASSIGN_OP_P.
	* decl.c (grok_op_properties): Adjust identifier checking.
	* init.c (expand_default_init): Adjust identifier descision.
	* method.c (implicitly_declare_fn): Don't use
	DECL_ASSIGNMENT_OPERATOR_P.
	* search.c (lookup_fnfields_1): Use IDENTIFIER_CTOR_P,
	IDENTIFIER_DTOR_P.
	* call.c (in_charge_arg_for_name): Reimplement.
	(build_special_member_call): Use IDENTIFIER_CDTOR_P,
	IDENTIFIER_DTOR_P.

	libcc1/
	* libcp1plugin.cc (plugin_build_decl): Don't set
	DECL_ASSIGNMENT_OPERATOR_P.
(--This line, and those below, will be ignored--

M    gcc/cp/init.c
M    gcc/cp/decl.c
M    gcc/cp/method.c
M    gcc/cp/cp-tree.h
M    gcc/cp/call.c
M    gcc/cp/search.c
M    gcc/cp/ChangeLog
M    libcc1/ChangeLog
M    libcc1/libcp1plugin.cc

From-SVN: r249657

2017-06-26  Jerome Lambourg  <lambourg@adacore.com>

	* config/vxworks.h (VXWORKS_OS_CPP_BUILTINS): builtin_define
	_VX_TOOL_FAMILY and _VX_TOOL to gnu.

From-SVN: r249656