gcc/
2016-11-17  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-arches.def: Add FPX quarkse instruction as valid
	for arcem.
	* config/arc/arc-c.def (__ARC_FPX_QUARK__): Define.
	* config/arc/arc-cpus.def (quarkse_em): Add.
	* config/arc/arc-options.def (FL_FPX_QUARK, FL_QUARK): Likewise.
	* config/arc/arc-opts.h (FPX_QK): Define.
	* config/arc/arc-tables.opt: Regenerate.
	* config/arc/arc.c (gen_compare_reg): Change.
	(arc_register_move_cost): Avoid Dy,Dx moves.
	* config/arc/arc.h (TARGET_HARD_FLOAT): Change.
	(TARGET_FPX_QUARK, TARGET_FP_ASSIST): Define.
	* config/arc/arc.md (divsf3, sqrtsf2, fix_truncsfsi2, floatsisf2):
	New expands.
	* config/arc/fpu.md (divsf3_fpu, sqrtsf2_fpu, floatsisf2_fpu)
	(fix_truncsfsi2_fpu): Rename.
	* config/arc/fpx.md (cmp_quark, cmpsf_quark_, cmpsf_quark_ord)
	(cmpsf_quark_uneq, cmpsf_quark_eq, divsf3_quark, sqrtsf2_quark)
	(fix_truncsfsi2_quark, floatsisf2_quark): New patterns.
	* config/arc/t-multilib: Regenerate.

From-SVN: r242546

gcc/testsuite
2016-11-17  Claudiu Zissulescu  <claziss@synopsys.com>

	* gcc.target/arc/abitest.S: New file.
	* gcc.target/arc/abitest.h: Likewise.
	* gcc.target/arc/va_args-1.c: Likewise.
	* gcc.target/arc/va_args-2.c: Likewise.
	* gcc.target/arc/va_args-3.c: Likewise.
	* gcc.target/arc/mcrc.c: Deleted.
	* gcc.target/arc/mdsp-packa.c: Likewise.
	* gcc.target/arc/mdvbf.c: Likewise.
	* gcc.target/arc/mmac-24.c: Likewise.
	* gcc.target/arc/mmac-d16.c: Likewise.
	* gcc.target/arc/mno-crc.c: Likewise.
	* gcc.target/arc/mno-dsp-packa.c: Likewise.
	* gcc.target/arc/mno-dvbf.c: Likewise.
	* gcc.target/arc/mno-mac-24.c: Likewise.
	* gcc.target/arc/mno-mac-d16.c: Likewise.
	* gcc.target/arc/mno-rtsc.c: Likewise.
	* gcc.target/arc/mno-xy.c: Likewise.
	* gcc.target/arc/mrtsc.c: Likewise.
	* gcc.target/arc/arc.exp (check_effective_target_arcem):
	New function.
	(check_effective_target_arc700): Likewise.
	(check_effective_target_arc6xx): Likewise.
	(check_effective_target_arcmpy): Likewise.
	(check_effective_target_archs): Likewise.
	(check_effective_target_clmcpu): Likewise.
	(check_effective_target_barrelshifter): Likewise.
	* gcc.target/arc/barrel-shifter-1.c: Changed.
	* gcc.target/arc/builtin_simd.c: Test only for ARC700
	cpus.
	* gcc.target/arc/cmem-1.c: Changed.
	* gcc.target/arc/cmem-2.c: Likewise.
	* gcc.target/arc/cmem-3.c: Likewise.
	* gcc.target/arc/cmem-4.c: Likewise.
	* gcc.target/arc/cmem-5.c: Likewise.
	* gcc.target/arc/cmem-6.c: Likewise.
	* gcc.target/arc/cmem-7.c: Likewise.
	* gcc.target/arc/interrupt-1.c: Test for RTIE as well.
	* gcc.target/arc/interrupt-2.c: Skip it for ARCv2 cores.
	* gcc.target/arc/interrupt-3.c: Match also ARCv2
	warnings.
	* gcc.target/arc/jump-around-jump.c: Update options.
	* gcc.target/arc/mARC601.c: Changed.
	* gcc.target/arc/mcpu-arc600.c: Changed.
	* gcc.target/arc/mcpu-arc601.c: Changed.
	* gcc.target/arc/mcpu-arc700.c: Changed.
	* gcc.target/arc/mdpfp.c: Skip for ARCv2 cores.
	* gcc.target/arc/movb-1.c: Changed.
	* gcc.target/arc/movb-2.c: Likewise.
	* gcc.target/arc/movb-3.c: Likewise.
	* gcc.target/arc/movb-4.c: Likewise.
	* gcc.target/arc/movb-5.c: Likewise.
	* gcc.target/arc/movb_cl-1.c: Likewise.
	* gcc.target/arc/movb_cl-2.c: Likewise.
	* gcc.target/arc/movbi_cl-1.c: Likewise.
	* gcc.target/arc/movh_cl-1.c: Likewise.
	* gcc.target/arc/mspfp.c: Skip for ARC HS cores.
	* gcc.target/arc/mul64.c: Enable it only for ARC600.
	* gcc.target/arc/mulsi3_highpart-1.c: Scan for ARCv2
	instructions.
	* gcc.target/arc/mulsi3_highpart-2.c: Skip it for ARCv1
	cores.
	* gcc.target/arc/no-dpfp-lrsr.c: Skip it for ARC HS.
	* gcc.target/arc/trsub.c: Only for ARC EM cores.
	* gcc.target/arc/builtin_simdarc.c: Changed.
	* gcc.target/arc/extzv-1.c: Likewise.
	* gcc.target/arc/insv-1.c: Likewise.
	* gcc.target/arc/insv-2.c: Likewise.
	* gcc.target/arc/mA6.c: Likewise.
	* gcc.target/arc/mA7.c: Likewise.
	* gcc.target/arc/mARC600.c: Likewise.
	* gcc.target/arc/mARC700.c: Likewise.
	* gcc.target/arc/mcpu-arc600.c: Likewise.
	* gcc.target/arc/mcpu-arc700.c: Likewise.
	* gcc.target/arc/movl-1.c: Likewise.
	* gcc.target/arc/nps400-1.c: Likewise.
	* gcc.target/arc/trsub.c: Likewise.
	* gcc.target/arc/barrel-shifter-2.c: Check for barrel
	shifter configuration.
	* gcc.target/arc/mlock.c: Skip for arc6xx
	configurations.
	* gcc.target/arc/mswape.c: Likewise.

From-SVN: r242545

	* config/avr/avr.c (avr_print_operand_address): Use CONST_INT_P if
	appropriate.
	(ashlqi3_out, ashlsi3_out, ashrqi3_out, ashrhi3_out): Same.
	(ashrsi3_out, lshrqi3_out, lshrhi3_out, lshrsi3_out): Same.
	(avr_rtx_costs_1, extra_constraint_Q): Same.
	(avr_address_cost): Use SUBREG_P if possible.

From-SVN: r242544

2016-11-17  Richard Biener  <rguenther@suse.de>

	PR middle-end/78383
	* tree-cfgcleanup.c (cleanup_control_flow_bb): Do not turn
	non-local goto into CFG.

From-SVN: r242543

2016-11-17  Richard Biener  <rguenther@suse.de>

	* common.opt (ftree-loop-if-convert-stores): Mark as preserved for
	backward compatibility.
	* doc/invoke.texi (ftree-loop-if-convert-stores): Remove.
	* tree-if-conv.c (pass_if_conversion::gate): Do not test
	flag_tree_loop_if_convert_stores.
	(pass_if_conversion::execute): Likewise.

From-SVN: r242542

2016-11-17  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/68180
	* g++.dg/cpp1y/pr68180.C: New.

From-SVN: r242541

re PR tree-optimization/78319 (PASS->FAIL: gcc.dg/uninit-pred-8_a.c bogus warning (test for bogus messages, line 20))

2016-11-17  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

	PR tree-optimization/78319

testsuite/
	* gcc.dg/uninit-pred-8_a.c (foo): Mark dg-bogus test to xfail on
	arm-none-eabi.

From-SVN: r242540

    * config/aarch64/predicates.md (aarch64_reg_or_fp_zero): Check for
    const_double code before calling aarch64_float_const_zero_rtx_p.

From-SVN: r242539

re PR middle-end/78306 ([CilkPlus] "inlining failed in call to always_inline ‘memset’: function not inlinable" with -fcilkplus)

2016-11-17  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/78306
	* ipa-inline-analysis.c (initialize_inline_failed): Do not
	inhibit inlining if function calls cilk_spawn.
	(can_inline_edge_p): Likewise.

	* gcc.dg/cilk-plus/pr78306.c: New testcase.

From-SVN: r242537

2016-11-17  Richard Biener  <rguenther@suse.de>

	PR middle-end/78305
	* fold-const.c (negate_expr_p): Fix multiplication case.

	* gcc.dg/torture/pr78305.c: New testcase.

From-SVN: r242536

re PR fortran/66227 ([OOP] EXTENDS_TYPE_OF n returns wrong result for polymorphic variable allocated to extended type)

2016-11-17  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/66227
	* simplify.c (gfc_simplify_extends_type_of): Fix missed optimization.
	Prevent over-simplification. Fix a comment. Add a comment.

2016-11-17  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/66227
	* gfortran.dg/extends_type_of_3.f90: Fix and extend the test case.

From-SVN: r242535

2016-11-17  Chung-Lin Tang  <cltang@codesourcery.com>

	PR target/78357
	* config/nios2/nios2.c (nios2_init_libfuncs): Remove TARGET_LINUX_ABI
	condition.
	(TARGET_INIT_LIBFUNCS): Delete definition and...
	* config/nios2/linux.h (TARGET_INIT_LIBFUNCS): ...move to here, add
	comments.

From-SVN: r242534

2016-11-17  Krister Walfridsson  <krister.walfridsson@gmail.com>

	* config/netbsd-stdint.h: New.
	* config.gcc (i[34567]86-*-netbsd): Add netbsd-stdint.h to tm_file.
	(x86_64-*-netbsd*): Likewise.

From-SVN: r242533

	PR c/78285
	* c-common.c (c_add_case_label): Turn error_at calls into inform.

	* gcc.dg/switch-5.c: Turn several dg-errors into dg-messages.
	* g++.dg/ext/case-range2.C: Likewise.

From-SVN: r242532

2016-11-16  Andrew PInski  <apinski@cavium.com>

        * config/aarch64/aarch64.opt (mverbose-cost-dump): New option.
        * config/aarch64/aarch64.c (aarch64_rtx_costs): Use
        flag_aarch64_verbose_cost instead of checking for details dump.
        (aarch64_rtx_costs_wrapper): Likewise.

From-SVN: r242531

2016-11-16  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/58001
	* io.c (next_char_not_space): Update handling of a 'tab' in a FORMAT.
 	(format_lex): Adjust invocations of next_char_not_space().
 
2016-11-16  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/58001
	* gfortran.dg/fmt_tab_1.f90: Adjust testcase.
	* gfortran.dg/fmt_tab_2.f90: Ditto.

From-SVN: r242530

From-SVN: r242529

	PR rtl-optimization/78378
	* combine.c (make_extraction): Use force_to_mode for non-{REG,MEM}
	inner only if pos is 0.  Fix up formatting.

	* gcc.c-torture/execute/pr78378.c: New test.

From-SVN: r242526

This is a fix for my PR70890 patch, which incorrectly removed all
REG_EQUIV notes rather than just one regarding a reg that dies.

	PR rtl-optimization/78325
	PR rtl-optimization/70890
	* ira.c (combine_and_move_insns): Only remove REG_EQUIV notes
	for dead regno.

From-SVN: r242525

Adds Rust symbol demangler. Rust mangles symbols using GNU_V3 style,
adding a hash and various special character subtitutions. This adds
a new rust style to cplus_demangle and adds 3 helper functions
rust_demangle, rust_demangle_sym and rust_is_mangled.

rust-demangle.c was written by David. Mark did the code formatting to
GNU style and integration into the gcc/libiberty build system and
testsuite.

include/ChangeLog:

2016-11-03  David Tolnay <dtolnay@gmail.com>
           Mark Wielaard  <mark@klomp.org>

       * demangle.h (DMGL_RUST): New macro.
       (DMGL_STYLE_MASK): Add DMGL_RUST.
       (demangling_styles): Add dlang_rust.
       (RUST_DEMANGLING_STYLE_STRING): New macro.
       (RUST_DEMANGLING): New macro.
       (rust_demangle): New prototype.
       (rust_is_mangled): Likewise.
       (rust_demangle_sym): Likewise.

libiberty/ChangeLog:

2016-11-03  David Tolnay <dtolnay@gmail.com>
           Mark Wielaard  <mark@klomp.org>

       * Makefile.in (CFILES): Add rust-demangle.c.
       (REQUIRED_OFILES): Add rust-demangle.o.
       * cplus-dem.c (libiberty_demanglers): Add rust_demangling case.
       (cplus_demangle): Handle RUST_DEMANGLING.
       (rust_demangle): New function.
       * rust-demangle.c: New file.
       * testsuite/Makefile.in (really-check): Add check-rust-demangle.
       (check-rust-demangle): New rule.
       * testsuite/rust-demangle-expected: New file.

Co-Authored-By: Mark Wielaard <mark@klomp.org>

From-SVN: r242524

	* decl.c (cp_finish_decl): Don't set TREE_CONSTANT on a reference.
	* typeck2.c (store_init_value): Likewise.

From-SVN: r242523

From-SVN: r242522

From-SVN: r242521

2016-11-16  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

	PR tree-optimization/77848
	* tree-if-conv.c (version_loop_for_if_conversion): When versioning
	an outer loop, only save basic block aux information for the inner
	loop.
	(versionable_outer_loop_p): New function.
	(tree_if_conversion): Version the outer loop instead of the inner
	one if the pattern will be recognized for outer-loop
	vectorization.

From-SVN: r242520

The `user_defined_section_attribute' is used as part of the condition to
determine if GCC should partition blocks within a function into hot and
cold blocks.  This global is initially false, and is set to true from
within the file parse phase of GCC, as part of the attribute handling
hook.

The `user_defined_section_attribute' is reset to false as part of the
final pass of GCC.  However, the final pass is part of the optimisation
phase of the compiler, and so if at any point during the file parse
phase any function, or data, has a section attribute the global
`user_defined_section_attribute' will be set to true.

When GCC performs the block partitioning pass on the first function, if
`user_defined_section_attribute' is true then the function will not be
partitioned.  Notice though, that due to the above, whether we partition
this first function or not has nothing to do with whether the function
has a section attribute, instead, if any function or data in the parsed
file has a section attribute then we don't partition the first
function.

After performing (or not) the block partitioning pass on the first
function we perform the final pass on the first function, at which point
we reset `user_defined_section_attribute' to false.  As parsing is
complete by this point, we will never set
`user_defined_section_attribute' to true after that, and so all of the
following functions will have the partition blocks pass performed on
them, even if the function has a section attribute, and will not be
partitioned.

Luckily we don't end up partitioning functions that should not be
partitioned though.  Due to the way that functions are selected during
the assembler writing phase, if a function has a section attribute this
takes priority over any hot/cold block partitioning that has been done.

What we see from the above then is that the
`user_defined_section_attribute' mechanism is broken.  It was originally
created when GCC parsed, optimised, and generated assembler function at
a time.  Now that we deal with the whole file in one go, we need to
update the mechanism used to gate the block partitioning pass.

This patch does this by looking specifically for a section attribute on
the function DECL, which removes the need for a global variable, and
will work whether we parse the whole file in one go, or one function at
a time.

A few new tests have been added.  These check for the case where a
function is not partitioned when it could be.

gcc/ChangeLog:

	* gcc/bb-reorder.c: Remove 'toplev.h' include.
	(pass_partition_blocks::gate): No longer check
	user_defined_section_attribute, instead check the function decl
	for a section attribute.
	* gcc/c-family/c-attribs.c (handle_section_attribute): No longer
	set user_defined_section_attribute.
	* gcc/final.c (rest_of_handle_final): Likewise.
	* gcc/toplev.c: Remove definition of user_defined_section_attribute.
	* gcc/toplev.h: Remove declaration of
	user_defined_section_attribute.

gcc/testsuiteChangeLog:

	* gcc.dg/tree-prof/section-attr-1.c: New file.
	* gcc.dg/tree-prof/section-attr-2.c: New file.
	* gcc.dg/tree-prof/section-attr-3.c: New file.

From-SVN: r242519

2016-11-16  Jerry DeLisle  <jvdelisle@gcc.gnu.org>

	PR libgfortran/51119
	* Makefile.am: Remove -fno-protect-parens -fstack-arrays.
	* Makefile.in: Regenerate.

From-SVN: r242518

	gcc/
	* config/mips/mips.md (casesi_internal_mips16_<mode>):
	Explicitly switch between JR and JRC for the table jump.  Adjust
	instruction count.

From-SVN: r242517

	gcc/
	* config/mips/mips.md (casesi_internal_mips16_<mode>): Set
	`insn_count' to 11 rather than 16.

From-SVN: r242516

	gcc/
	* config/mips/mips.md (casesi_internal_mips16_<mode>): Use the
	`ltu' rather than `leu' operation in the RTL pattern

From-SVN: r242515

	gcc/
	* config/mips/mips.md (casesi_internal_mips16_<mode>): Add
	missing <d> instruction prefixes throughout.  Correct
	formatting.

	gcc/testsuite/
	* gcc.target/mips/code-readable-4.c (dg-final): Expect `dla'
	rather than `la'.

From-SVN: r242514

	* decl.c (store_decomp_type, lookup_decomp_type): New.
	(cp_finish_decomp): Call store_decomp_type.
	* semantics.c (finish_decltype_type): Call lookup_decomp_type.
	* cp-tree.h: Declare lookup_decomp_type.

From-SVN: r242513

	gcc/
	* config/mips/mips.c (mips_output_jump): Output R_MICROMIPS_JALR
	rather than R_MIPS_JALR relocation in microMIPS code.  Do not
	cancel short delay slots in PIC call relaxation.

	gcc/testsuite/
	* gcc.target/mips/call-1.c (dg-options): Add `-mno-micromips'.
	(dg-final): Remove microMIPS JALRS mnemonic matching.
	* gcc.target/mips/call-2.c (dg-options): Add `-mno-micromips'.
	(dg-final): Remove microMIPS JALRS mnemonic matching.
	* gcc.target/mips/call-3.c (dg-options): Add `-mno-micromips'.
	(dg-final): Remove microMIPS JALRS mnemonic matching.
	* gcc.target/mips/call-4.c (dg-options): Add `-mno-micromips'.
	* gcc.target/mips/call-5.c (dg-options): Add `-mno-micromips'.
	* gcc.target/mips/call-6.c (dg-options): Add `-mno-micromips'.
	* gcc.target/mips/call-1u.c: New test case.
	* gcc.target/mips/call-2u.c: New test case.
	* gcc.target/mips/call-3u.c: New test case.
	* gcc.target/mips/call-4u.c: New test case.
	* gcc.target/mips/call-5u.c: New test case.
	* gcc.target/mips/call-6u.c: New test case.

From-SVN: r242512

	PR bootstrap/72823
	* configure.ac (ENABLE_ASSERT_CHECKING): Define if gcc configure
	would define that macro.
	* configure: Regenerated.
	* config.in: Regenerated.

From-SVN: r242510

    
    A step toward eliminating goc2c.
    
    Drop the exported parfor code; it was needed for tests in the past, but
    no longer is. The Go 1.7 runtime no longer uses parfor.
    
    Reviewed-on: https://go-review.googlesource.com/33324

From-SVN: r242509

2016-11-16  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.md (arm_addsi3): Add alternative for addition of
    general register with general register or ARM constant into SP
    register.

    gcc/testsuite/
    * gcc.target/arm/empty_fiq_handler.c: New test.

From-SVN: r242508

	PR fortran/78299
	* omp-low.c (expand_omp_for_static_nochunk): Don't assert
	that loop->header == body_bb if broken_loop.

	* gfortran.dg/gomp/pr78299.f90: New test.

From-SVN: r242507

Looking at PR77308, one of the issues is that the bswap optimization 
phase doesn't work on ARM.  This is due to an odd check that uses
SLOW_UNALIGNED_ACCESS (which is always true on ARM).  Since the testcase
in PR77308 generates much better code with this patch (~13% fewer
instructions), it seems best to remove this check.

    gcc/
	* tree-ssa-math-opts.c (bswap_replace): Remove test
	of SLOW_UNALIGNED_ACCESS.

    testsuite/
	* gcc.dg/optimize-bswapdi-3.c: Remove xfail.
	* gcc.dg/optimize-bswaphi-1.c: Likewise. 	
	* gcc.dg/optimize-bswapsi-2.c: Likewise.

From-SVN: r242506

ieee_support_halting only checked the availability of status
flags, not trapping support.  On some targets the later can
only be checked at runtime: feenableexcept reports if
enabling traps failed.

So check trapping support by enabling/disabling it.

Updated the test that enabled trapping to check if it is
supported.

gcc/testsuite/

	PR libgfortran/78314
	* gfortran.dg/ieee/ieee_6.f90: Use ieee_support_halting.

libgfortran/

	PR libgfortran/78314
	* config/fpu-glibc.h (support_fpu_trap): Use feenableexcept.

From-SVN: r242505

	gcc/testsuite	
	* gcc.target/arm/ivopts-orig_biv-inc.c: Adjust test string
	according to updated dump info.

From-SVN: r242504

gcc/
	* config/nvptx/mkoffload.c (main): Check that either OpenACC or OpenMP
	is selected.  Pass -mgomp to offload compiler in OpenMP case.
	* config/nvptx/nvptx-protos.h (nvptx_shuffle_kind): Move enum
	declaration from nvptx.c.
	(nvptx_gen_shuffle): Declare.
	(nvptx_output_set_softstack): Declare.
	* config/nvptx/nvptx.c (nvptx_shuffle_kind): Move to nvptx-protos.h.
	(need_softstack_decl): New variable.
	(need_unisimt_decl): New variable.
	(diagnose_openacc_conflict): New.  Use it...
	(nvptx_option_override): ...here.  Handle TARGET_GOMP.
	(nvptx_encode_section_info): Handle "shared" attribute.
	(write_as_kernel): Restrict to OpenACC target regions.
	(init_softstack_frame): New.
	(nvptx_init_unisimt_predicate): New.
	(write_omp_entry): New.  Use it...
	(nvptx_declare_function_name): ...here to emit OpenMP target region
	entrypoints.  Handle TARGET_SOFT_STACK.  Call
	nvptx_init_unisimt_predicate.
	(nvptx_output_set_softstack): New.
	(nvptx_get_drap_rtx): Return %argp as the DRAP if needed.
	(nvptx_gen_shuffle): Export.
	(nvptx_output_call_insn): Handle COND_EXEC patterns.  Emit instruction
	predicate.
	(nvptx_print_operand): Fix handling of instruction predicates.
	(nvptx_get_unisimt_master): New helper function.
	(nvptx_get_unisimt_predicate): Ditto.
	(nvptx_call_insn_is_syscall_p): Ditto.
	(nvptx_unisimt_handle_set): Ditto.
	(nvptx_reorg_uniform_simt): New.  Transform code for -muniform-simt.
	(nvptx_reorg): Call nvptx_reorg_uniform_simt.
	(nvptx_handle_shared_attribute): New.  Use it...
	(nvptx_attribute_table): ... here (new entry).
	(nvptx_record_offload_symbol): Handle NULL attributes.
	(nvptx_file_end): Handle need_softstack_decl and need_unisimt_decl.
	(nvptx_simt_vf): New.
	(TARGET_SIMT_VF): Define.
	* config/nvptx/nvptx.h (TARGET_CPU_CPP_BUILTINS): Define
	__nvptx_softstack or __nvptx_unisimt__ when -msoft-stack, or resp.
	-muniform-simt option is active.
	(STACK_SIZE_MODE): Define.
	(FIXED_REGISTERS): Adjust.
	(SOFTSTACK_SLOT_REGNUM): New.
	(SOFTSTACK_PREV_REGNUM): New.
	(REGISTER_NAMES): Adjust.
	(struct machine_function): New fields.
	* config/nvptx/nvptx.md (UNSPEC_SET_SOFTSTACK): New.
	(UNSPEC_VOTE_BALLOT): Ditto.
	(UNSPEC_LANEID): Ditto.
	(UNSPECV_NOUNROLL): Ditto.
	(atomic): New attribute.
	(predicable): New attribute.  Generate predicated forms via
	define_cond_exec.
	(br_true): Mark as not predicable.
	(br_false): Ditto.
	(br_true_uni): Ditto.
	(br_false_uni): Ditto.
	(return): Ditto.
	(trap_if_true): Ditto.
	(trap_if_false): Ditto.
	(nvptx_fork): Ditto.
	(nvptx_forked): Ditto.
	(nvptx_joining): Ditto.
	(nvptx_join): Ditto.
	(nvptx_barsync): Ditto.
	(epilogue): Emit stack restore if TARGET_SOFT_STACK.
	(allocate_stack): Implement for TARGET_SOFT_STACK.  Remove unused code.
	(allocate_stack_<mode>): Remove unused pattern.
	(set_softstack_insn): New pattern.
	(restore_stack_block): Handle for TARGET_SOFT_STACK.
	(nvptx_vote_ballot): New pattern.
	(omp_simt_lane): Ditto.
	(omp_simt_last_lane): Ditto.
	(omp_simt_ordered): Ditto.
	(omp_simt_vote_any): Ditto.
	(omp_simt_xchg_bfly): Ditto.
	(omp_simt_xchg_idx): Ditto.
	(nvptx_nounroll): Ditto.
	(atomic_compare_and_swap<mode>_1): Mark with atomic attribute.
	(atomic_exchange<mode>): Ditto.
	(atomic_fetch_add<mode>): Ditto.
	(atomic_fetch_addsf): Ditto.
	(atomic_fetch_<logic><mode>): Ditto.
	* config/nvptx/nvptx.opt: (msoft-stack): New option.
	(muniform-simt): Ditto.
	(mgomp): Ditto.
	* config/nvptx/t-nvptx (MULTILIB_OPTIONS): New.
	* doc/extend.texi (Nvidia PTX Variable Attributes): New section.
	* doc/invoke.texi (msoft-stack): Document.
	(muniform-simt): Document
	(mgomp): Document.
	* doc/tm.texi: Regenerate.
	* doc/tm.texi.in: (TARGET_SIMT_VF): New hook.
	* target.def: Define it.
	* target-insns.def (omp_simt_lane): New.
	(omp_simt_last_lane): New.
	(omp_simt_ordered): New.
	(omp_simt_vote_any): New.
	(omp_simt_xchg_bfly): New.
	(omp_simt_xchg_idx): New.

libgcc/
	* config/nvptx/crt0.c (__main): Setup __nvptx_stacks and __nvptx_uni.
	* config/nvptx/mgomp.c: New file.
	* config/nvptx/t-nvptx: Add mgomp.c

gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_alloca): Use a
	compile test.
	* gcc.target/nvptx/softstack.c: New test.
	* gcc.target/nvptx/decl-shared.c: New test.
	* gcc.target/nvptx/decl-shared-init.c: New test.

From-SVN: r242503