Since gccgo can trace back through C code as easily as Go code, we
    should print C functions in the traceback.
    
    This worked before https://golang.org/cl/31230 for a dumb reason.  The
    default value for runtime.traceback_cache was, and is, 2 << 2, meaning
    to print all functions.  The old C code for runtime_parsedebugvars
    would return immediately and do nothing if the environment variable
    GODEBUG was not set (if GODEBUG was set it would later call
    setTraceback.  The new Go code for runtime.parsedebugvars does not
    return immediately if GODEBUG is not set, and always calls
    setTraceback.  Either way, if GOTRACEBACK is not set, setTraceback
    would set traceback_cache to 1 << 2, meaning to only print non-runtime
    functions and having the effect of not printing plain C functions.
    
    Keep the current handling of GODEBUG/GOTRACEBACK, which matches the gc
    library, but add an extra check to print C functions by default.
    
    Reviewed-on: https://go-review.googlesource.com/33717

From-SVN: r243083

From-SVN: r243082

gcc/testsuite/ChangeLog:

	PR tree-optimization/78586
	* gcc.dg/tree-ssa/builtin-sprintf-2.c: New test cases.

From-SVN: r243081

2016-11-30  Michael Meissner  <meissner@linux.vnet.ibm.com>

	PR target/78602
	* config/rs6000/rs6000.c (rs6000_expand_vector_extract): If the
	element is not a constant or in a register, force it to a
	register.

	PR target/78560
	* config/rs6000/rs6000.c (rs6000_expand_vector_set): Force value
	that will be set to a vector element to be in a register.
	* config/rs6000/vsx.md (vsx_set_<mode>_p9): Fix thinko that used
	the wrong multiplier to convert the element number to a byte
	offset.

From-SVN: r243044

	* config/nvptx/env.c: Delete.
	* icv.c: Move definitions of ICV variables back ...
	* env.c: ...here.  Do not compile environment-related functionality if
	LIBGOMP_OFFLOADED_ONLY is set.

From-SVN: r243041

	* configure.ac [nvptx*-*-*] (libgomp_offloaded_only): Set and use it...
	(LIBGOMP_OFFLOADED_ONLY): ...here; new define.
	* configure: Regenerate.
	* config.h.in: Likewise.

From-SVN: r243040

	* Makefile.in: Regenerate with automake-1.11.6.
	* aclocal.m4: Likewise.
	* configure: Likewise.
	* testsuite/Makefile.in: Likewise.

From-SVN: r243039

2016-11-30  Vladimir Makarov  <vmakarov@redhat.com>

	PR tree-optimization/77856
	* lra-constraints.c (inherit_in_ebb): Check original regno for
	invalid invariant regs too.  Set only clobbered hard regs for the
	invalid invariant regs.

2016-11-30  Vladimir Makarov  <vmakarov@redhat.com>

	PR tree-optimization/77856
	* gcc.target/i386.c (pr77856.c): New.

From-SVN: r243038

2016-11-30  Matthias Klose  <doko@ubuntu.com>

        * configure.ac: Set BDW_GC_CFLAGS and BDW_GC_LIBS after checking
        for the existence of the pkg-config modules.
        * Regenerate.

From-SVN: r243037

* include/std/istream (__is_convertible_to_basic_istream):
Change the return types of __check, introduce istream_type.
(operator>>(_Istream&&, _Tp&&)):
Use __is_convertible_to_basic_istream::istream_type as the return type.
* include/std/ostream (__is_convertible_to_basic_ostream):
Change the return types of __check, introduce ostream_type.
(operator>>(_Ostream&&, _Tp&&)):
Use __is_convertible_to_basic_ostream::ostream_type as the return type.

From-SVN: r243036

From-SVN: r243035

libgfortran/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

        * caf/single.c (_gfortran_caf_get_by_ref): Prevent compile time
        warning.
        (_gfortran_caf_send_by_ref): Same.
        (_gfortran_caf_is_present): Prevent fallthrough warnings.

gcc/testsuite/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

	* ChangeLog: Removed wrongly placed entry.
	* gfortran.dg/coarray_lib_alloc_4.f90: New test.

From-SVN: r243034

2016-11-30  Pitchumani Sivanupandi  <pitchumani.sivanupandi@microchip.com>

	Commit files forgotten in r242966.

	* config/avr/avr-arch.h (avr_mcu_t) [flash_size]: New member.
	* config/avr/avr-devices.c (avr_mcu_types): Add flash size info.
	* config/avr/gen-avr-mmcu-specs.c (print_mcu): Remove hard-coded
	prefix check to find wrap-around value, instead use MCU flash size.
	For 8k flash devices, update link_pmem_wrap spec string to
	add --pmem-wrap-around=8k.
	* config/avr/specs.h (LINK_RELAX_SPEC): Move link_pmem_wrap from
	here...
	(LINK_SPEC): ...to here.

From-SVN: r243033

        * g++.dg/eh/new1.C: XFAIL on AIX.
        * g++.dg/eh/delete1.C: Same.
        * g++.dg/init/new40.C: Same.
        * g++.old-deja/g++.eh/new2.C: Same.

From-SVN: r243032

gcc/testsuite/ChangeLog:

	PR c/78498
	* gcc.dg/format/pr78494.c: Rename to...
	* gcc.dg/format/pr78498.c: ...this.

From-SVN: r243031

gcc/ChangeLog:
	PR c/78498
	* selftest.c (selftest::assert_strndup_eq): New function.
	(selftest::test_strndup): New function.
	(selftest::test_libiberty): New function.
	(selftest::selftest_c_tests): Call test_libiberty.

gcc/testsuite/ChangeLog:
	PR c/78498
	* gcc.dg/format/pr78494.c: New test case.

libiberty/ChangeLog:
	PR c/78498
	* strndup.c (strlen): Delete decl.
	(strnlen): Add decl.
	(strndup): Call strnlen rather than strlen.
	* xstrndup.c (xstrndup): Likewise.

From-SVN: r243030

        * g++.dg/debug/dwarf2/ref-1.C: Don't XFAIL scan-assembler-not on AIX.
        * g++.dg/debug/dwarf2/imported-decl-2.C: Same.
        * g++.dg/debug/dwarf2/refqual-1.C: Same.
        * g++.dg/debug/dwarf2/refqual-2.C: Same.

From-SVN: r243029

In the testcase, IRA propagates a constant into a TRAP_IF insn, which
then becomes an unconditional trap.  Unconditional traps are control
flow insns so doing this requires surgery on the cfg.  We cannot do
that here, so instead refuse to do the substitution.


	PR rtl-optimization/78610
	* ira.c (combine_and_move_insns): Don't substitute into TRAP_IF
	instructions.

gcc/testsuite/
	PR rtl-optimization/78610
	* gcc.c-torture/compile/pr78610.c: New testcase.

From-SVN: r243028

2016-11-30  Tim Shen  <timshen@google.com>

	* include/bits/shared_ptr_base.h
	(__shared_ptr_access<T, L, true, false>::operator*()): Fix assertion.

From-SVN: r243027

re PR tree-optimization/78574 (ice on valid C code at -O2 and -O3 in both 32- and 64-bit modes on x86_64-linux-gnu (internal compiler error: Segmentation fault (program cc1)))

	PR tree-optimization/78574
	* tree-ssa-loop-ivopts.c (find_deriving_biv_for_expr): Skip loop
	header PHI that doesn't define biv.
	gcc/testsuite
	PR tree-optimization/78574
	* gcc.c-torture/compile/pr78574.c: New test.

From-SVN: r243026

libgfortran/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

        * caf/single.c (_gfortran_caf_is_present): Prevent fallthrough
        warnings.

From-SVN: r243025

libgfortran/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/single.c (_gfortran_caf_is_present): Prevent fallthrough
	warnings.

From-SVN: r243024

        * testsuite/18_support/50594.cc: XFAIL on AIX.
        * testsuite/ext/mt_allocator/check_new.cc: Same.
        * testsuite/ext/pool_allocator/check_new.cc: Same.
        * testsuite/27_io/ios_base/storage/11584.cc: Same.

From-SVN: r243023

2016-11-30  Gary Dismukes  <dismukes@adacore.com>

	* sem_prag.adb, sem_ch6.adb: Minor reformatting and typo fixes.
	* g-sechas.adb: Minor reformatting.
	* lib-xref.ads: minor grammar fix in comment.
	* lib-xref-spark_specific.adb
	(Is_SPARK_Reference): do not ignore references to concurrent
	objects.
	* sinfo.ads: Fix of unbalanced parens in comment

2016-11-30  Ed Schonberg  <schonberg@adacore.com>

	* lib-xref.adb (Get_Type_Reference): If the entity is a function
	returning a classwide type, the type reference is obtained right
	away and does not need further unwinding.

2016-11-30  Javier Miranda  <miranda@adacore.com>

	* sem_ch8.adb (Find_Renamed_Entity): For non-overloaded subprogram
	actuals of generic units check that the spec of the renaming
	and renamed entities match.

2016-11-30  Tristan Gingold  <gingold@adacore.com>

	* raise-gcc.c: For CERT runtimes: do not use gcc includes, simplify
	the handling.
	* sem_attr.adb (Analyze_Attribute): Check No_Dynamic_Priorities
	restriction for Priority Attribute.

From-SVN: r243022

libgfortran/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

	* caf/libcaf.h: Add new action types for (de-)registration of
	allocatable components in derived type coarrays.  Add _caf_is_present
	prototype.
	* caf/single.c (_gfortran_caf_register): Add support for registration
	only and allocation of already registered allocatable components in
	derived type coarrays.
	(_gfortran_caf_deregister): Add mode to deallocate but not deregister
	an allocatable component in a derived type coarray.
	(_gfortran_caf_is_present): New function.  Query whether an
	allocatable component in a derived type coarray on a remote image is
	allocated.


gcc/testsuite/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

	* gfortran.dg/coarray/alloc_comp_1.f90: Fix tree-dump scans to adhere
	to the changed interfaces.
	* gfortran.dg/coarray_alloc_comp_1.f08: Likewise.
	* gfortran.dg/coarray_allocate_7.f08: Likewise.
	* gfortran.dg/coarray_lib_alloc_1.f90: Likewise.
	* gfortran.dg/coarray_lib_alloc_2.f90: Likewise.
	* gfortran.dg/coarray_lib_alloc_3.f90: Likewise.
	* gfortran.dg/coarray_lib_comm_1.f90: Likewise.
	* gfortran.dg/coarray_lib_alloc_4.f90: New test.

gcc/fortran/ChangeLog:

2016-11-30  Andre Vehreschild  <vehre@gcc.gnu.org>

	* check.c (gfc_check_allocated): By pass the caf_get call and check on
	the array.
	* gfortran.h: Add optional flag to gfc_caf_attr.
	* gfortran.texi: Document new enum values and _caf_is_present function.
	* primary.c (caf_variable_attr): Add optional flag to indicate that the
	expression is reffing a component.
	(gfc_caf_attr): Likewise.
	* trans-array.c (gfc_array_deallocate): Handle deallocation mode for
	coarray deregistration.
	(gfc_trans_dealloc_allocated): Likewise.
	(duplicate_allocatable): Use constants instead of
        creating custom constant tree node of zero or one.  Use gfc_add_modify
        convenience function.
	(duplicate_allocatable_coarray): This function is similar to
	duplicate_allocatable but tailored to handle coarrays.
	(caf_enabled): Check whether in-derived-type coarray processing is
	enabled.
	(caf_in_coarray): Check that in-derived-type coarray processing is
	enabled and currently in a derived-typed coarray.
	(gfc_caf_is_dealloc_only): Return true, when deallocate only is
	desired for components in derived typed coarrays.
	(structure_alloc_comps): A mode for handling coarrays, that is no
	longer encode in the purpose.  This makes the use cases of the
	routine more flexible without repeating.  Allocatable components in
	derived type coarrays are now registered only when nullifying an
	object and allocated before copying data into them.
	(gfc_nullify_alloc_comp): Use the caf_mode of structure_alloc_comps
	now.
	(gfc_deallocate_alloc_comp): Likewise.
	(gfc_deallocate_alloc_comp_no_caf): Likewise.
	(gfc_reassign_alloc_comp_caf): Likewise.
	(gfc_copy_alloc_comp): Likewise.
	(gfc_copy_only_alloc_comp): Likewise.
	(gfc_alloc_allocatable_for_assignment): Make use to the cheaper way of
	reallocating a coarray without deregistering and reregistering it.
	(gfc_trans_deferred_array): Initialize the coarray token correctly for
	deferred variables and tear them down on exit.
	* trans-array.h: Change some prototypes to add the coarray (de-)
	registration modes.  Add prototype for checking if deallocate only is
	selected for components in derived typed coarrays.
	* trans-decl.c (gfc_build_builtin_function_decls): Generate the
	declarations for the changed/new caf-lib routines.
	(gfc_trans_deferred_vars): Ensure deferred variables are (de-)
	registered correctly on procedure entry/exit.
	(generate_coarray_sym_init): Use constants.
	* trans-expr.c (gfc_conv_procedure_call): Propagate coarray allocation
	modes accordingly.
	(gfc_trans_alloc_subarray_assign): Likewise.
	(gfc_trans_subcomponent_assign): Likewise.
	(gfc_trans_structure_assign): Generate code to register the components
	of a derived type coarray prior to initialization.
	(gfc_conv_structure): Set flag that the structure is in a coarray.
	(gfc_trans_scalar_assign): Add flag to indicate being in a coarray and
	set the structure_alloc_comps modes correctly.
	(gfc_trans_assignment_1): Figure being in a coarray expression.
	* trans-intrinsic.c (gfc_conv_intrinsic_caf_get): Adapt to new
	structure_alloc_comps interface.
	(conv_caf_send): Use the old API as long as possible.
	(trans_caf_is_present): Generate code to check whether an allocatable
	component in a derived typed coarray is allocated on a remote image.
	(caf_this_image_ref): Return true, when only reffing this image.
	(gfc_conv_allocated): Convert allocated queries on allocatable
	components to the library API.
	(conv_intrinsic_move_alloc): Adapt to new interface of
	structure_alloc_comps.
	* trans-openmp.c (gfc_walk_alloc_comps): Likewise.
	(gfc_omp_clause_assign_op): Likewise.
	(gfc_omp_clause_dtor): Likewise.
	* trans-stmt.c (gfc_trans_deallocate): Figure which mode to use when
	deallocating allocatable components in derived type coarras.
	* trans.c (gfc_allocate_using_lib): Renamed to
	gfc_allcate_using_caf_lib.
	(gfc_allocate_allocatable): Set the registration mode/type of caf-
	register calls adapting to all the possible allocatable objects.
	(gfc_deallocate_with_status): Add deregistration mode for allocatable
	components in derived type coarrays.
	(gfc_deallocate_scalar_with_status): Likewise.
	* trans.h (enum gfc_coarray_type): Renamed to gfc_coarray_regtype to
	avoid collision with gfc_coarray_deregtype.

From-SVN: r243021

2016-11-30  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/78593
	* primary.c (gfc_match_varspec): Check if sym is non-null to avoid ICE.

2016-11-30  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/78593
	* gfortran.dg/derived_result.f90: New test case.

From-SVN: r243020

	* emit-rtl.c (verify_insn_sharing): Call verify_rtx_sharing instead of
	reset_used_flags.

From-SVN: r243019

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

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

From-SVN: r243018

	* ira.c (ira_update_equiv_info_by_shuffle_insn): Use copy_rtx
	for REG_EQUIV argument.

From-SVN: r243017

From-SVN: r243016

2016-11-30  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/t-rmprofile: Add mappings for Cortex-M23 and Cortex-M33.

From-SVN: r243015

	PR sanitizer/78532
	* sanitizer_common/sanitizer_platform_limits_posix.h
	(__sanitizer_sigaction): Adjust for sparc targets and various Glibc
	versions.

From-SVN: r243014

2016-11-29  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    * lib/target-supports.exp (add_options_for_arm_arch_v6m): Add
    -mfloat-abi=soft option.
    (add_options_for_arm_arch_v8m_base): Likewise.  Reindent containing
    foreach loop.

From-SVN: r243013

	PR ipa/78555
	* real.c (real_hash): Add cast to avoid left
	shifting of negative values.

From-SVN: r243012

	PR target/78362
	* config/aarch64/aarch64.md (add<mode>3): Extract inner expression
	from a subreg in operands[1] and don't call REGNO on a non-reg
	expression when deciding to force operands[2] into a reg.

	* gcc.c-torture/compile/pr78362.c: New test.

From-SVN: r243011

	* configure.ac (--enable-objc-gc): If not given, default to
	enable_objc_gc=no.
	* configure: Regenerated.

From-SVN: r243010

In check_effective_target_freorder we check to see if the target
supports -freorder-blocks-and-partition.  However we disable
-freorder-blocks-and-partition when -fprofile-use is not supplied so for
some targets we'll not see any message about lack of support for
-freorder-blocks-and-partition unless -fprofile-use is also passed.

This commit extends check_effective_target_freorder to first try
-freorder-blocks-and-partition on its own, then try -fprofile-use and
-freorder-blocks-and-partition.

gcc/testsuite/ChangeLog:

	* lib/target-supports.exp (check_effective_target_freorder): Check
	additional case.

From-SVN: r243009

gcc/lto/
	PR lto/78562
	* lto-symtab.c (lto_symtab_merge_decls_2): Don't diagnose type
	mismatch if the two types are built-in.

From-SVN: r243008

ARC700 targets have a store/load pipeline hazard, if we load within 2
cycles of a store, and the load/store are at the same address, then we
pay a multi-cycle penalty.

This commit avoids this by inserting nop instructions between the store
and the load.

gcc/ChangeLog:

	* config/arc/arc-protos.h (arc_store_addr_hazard_p): Declare.
	* config/arc/arc.c (arc_store_addr_hazard_p): New function.
	(workaround_arc_anomaly): Call arc_store_addr_hazard_p for ARC700.
	* config/arc/arc700.md: Add define_bypass for store/load.

gcc/testsuite/ChangeLog:

	* gcc.target/arc/arc700-stld-hazard.c: New file.

From-SVN: r243007

* include/std/istream (__is_convertible_to_basic_istream): New.
(__is_extractable): Likewise.
(operator>>(basic_istream<_CharT, _Traits>&&, _Tp&&)):
Turn the stream parameter into a template parameter
and constrain.
* include/std/ostream (__is_convertible_to_basic_ostream): New.
(__is_insertable): Likewise.
(operator<<(basic_ostream<_CharT, _Traits>&&, const _Tp&)):
Turn the stream parameter into a template parameter
and constrain.
* testsuite/27_io/basic_istream/extractors_other/char/4.cc: New.
* testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc:
Likewise.
* testsuite/27_io/basic_ostream/inserters_other/char/6.cc: Likewise.
* testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc: Likewise.

From-SVN: r243006