From-SVN: r249212

    
    If there is an error constructing the backend type, the GCC backend
    will report that the size is 1.  That will then cause construction of
    the ptrmask to crash.  Avoid that case by just generating an empty
    ptrmask.
    
    Noticed while compiling a broken package.  The policy I've been
    following is to not commit a test case for a compiler crash on invalid
    code, so no test case.
    
    Reviewed-on: https://go-review.googlesource.com/45775

From-SVN: r249208

	gcc/
	* config/mips/mips.md (MIPS16_T_REGNUM): Remove constant.
	(casesi): Emit bounds checking as RTL.
	(casesi_internal_mips16_<mode>): Remove bounds checking.

	gcc/testsuite/
	* gcc.target/mips/data-sym-jump.c: Adjust for whitespace changes.
	* gcc.target/mips/pr51513-1.c: New test.
	* gcc.target/mips/pr51513-2.c: New test.

From-SVN: r249207

	* doc/xml/manual/test.xml: Correct instructions on running tests.
	* testsuite/21_strings/basic_string/cons/char/deduction.cc: Adjust to
	pass when -D_GLIBCXX_USE_CXX11_ABI=0 added to RUNTESTFLAGS.
	* testsuite/21_strings/basic_string/cons/wchar_t/deduction.cc:
	Likewise.
	* testsuite/27_io/basic_ios/copyfmt/char/1.cc: Likewise.
	* testsuite/27_io/basic_ios/exceptions/char/1.cc: Likewise.
	* testsuite/27_io/basic_istream/extractors_arithmetic/char/
	exceptions_failbit.cc: Likewise.
	* testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/
	exceptions_failbit.cc: Likewise.
	* testsuite/27_io/basic_istream/extractors_other/char/
	exceptions_null.cc: Likewise.
	* testsuite/27_io/basic_istream/extractors_other/wchar_t/
	exceptions_null.cc: Likewise.
	* testsuite/27_io/basic_istream/sentry/char/12297.cc: Likewise.
	* testsuite/27_io/basic_istream/sentry/wchar_t/12297.cc: Likewise.
	* testsuite/27_io/basic_ostream/inserters_other/char/
	exceptions_null.cc: Likewise.
	* testsuite/27_io/basic_ostream/inserters_other/wchar_t/
	exceptions_null.cc: Likewise.
	* testsuite/27_io/ios_base/storage/2.cc: Likewise.

From-SVN: r249206

	* Makefile.def: Add check-gotools to go check targets.
	* Makefile.in: Rebuild.

From-SVN: r249204

	* Makefile.am (libgosrcdir): Define.
	(check-head, check-gccgo, check-go-tool): New targets.
	(CHECK_ENV): Define.
	(check): New target.
	(mostlyclean-local): New target.
	* Makefile.in: Rebuild.

From-SVN: r249203

XCHAL_* macros from the xtensa-config.h are used in a number of places
that require them to be preprocessor constants. Rewrite these places so
that non-constant XCHAL_* definitions could be used there.

2017-06-14  Max Filippov  <jcmvbkbc@gmail.com>
gcc/
	* config/xtensa/xtensa.c (xtensa_option_override): Append
	MASK_CONST16 to target_flags in the absence of TARGET_L32R.
	(hwloop_optimize, hwloop_fail, hwloop_pattern_reg,
	 xtensa_doloop_hooks): Define unconditionally.
	(xtensa_reorg_loops): Only call reorg_loops in the presence of
	TARGET_LOOPS.
	* config/xtensa/xtensa.h (TARGET_L32R): New definition.
	(TARGET_DEFAULT): Remove XCHAL_HAVE_L32R condition and account
	for it in xtensa_option_override.
	(HARD_FRAME_POINTER_IS_FRAME_POINTER,
	 HARD_FRAME_POINTER_IS_ARG_POINTER): New definitions.

From-SVN: r249202

Sometimes it is useful to generate pre-processed output to a file and
the dependency information to stdout for further analysis/processing.
For example:

g++ -E -MD -fdirectives-only -o test.ii test.cxx

This will generate the dependency information to test.d (as per the
documentation). While changing this behavior is probably unwise, one
traditional (e.g., supported by -o) way to handle this is to recognize
the special '-' file name as an instruction to write to stdout:

g++ -E -MD -fdirectives-only -o test.ii -MF - test.cxx

Currently this will create a file named '-'. The included patch
changes this behavior to write to stdout.

Note also that Clang has supported this from at least version 3.5.

gcc:
2017-06-14  Boris Kolpackov  <boris@codesynthesis.com>

	* doc/cppopts.texi: Document '-' special value to -MF.

gcc/c-family:
2017-06-14  Boris Kolpackov  <boris@codesynthesis.com>

	* c-opts.c (c_common_finish): Handle '-' special value to -MF.

From-SVN: r249201

The Cortex-A53 scheduler model of FMAC bypass is not quite right
for FMAC to FMAC forwarding.  Experiments also show the latencies of
FP operations are too high as well.  Rather than adding more bypasses,
adjust the latencies of FP instructions to get a better schedule on
average.  As a result SPECFP2006 is 1.1% faster.

    gcc/
	* config/arm/cortex-a53.md (cortex_a53_fpalu) Adjust latency.
	(cortex_a53_fconst): Likewise.
	(cortex_a53_fpmul): Likewise.
	(cortex_a53_f_load_64): Likewise.
	(cortex_a53_f_load_many): Likewise.
	(cortex_a53_advsimd_alu): Likewise.
	(cortex_a53_advsimd_alu_q): Likewise.
	(cortex_a53_advsimd_mul): Likewise.
	(cortex_a53_advsimd_mul_q): Likewise.
	(fpmac bypass): Add new bypass for fpmac-fpmac case.
	Add missing fmul, r2f_cvt and fconst cases.

From-SVN: r249200

    
    The go tool will pass -I objdir as one of the flags, where objdir is
    the temporary build directory. Remove that from _cgo_flags: we don't
    need it, and it will be different each time.
    
    Sort the flags to avoid the unpredictable map iteration order.
    
    This matters for gccgo because for a package that uses cgo, the go
    tool when building for gccgo will store the _cgo_flags file in the
    archive. That means that we want to generate identical _cgo_flags for
    every run.
    
    The test for this is the cmd/go testsuite, to follow in a future CL.
    
    Reviewed-on: https://go-review.googlesource.com/45692

From-SVN: r249199

    
    Pass the -fdebug-prefix-map and -gno-record-gcc-switches compiler
    options to gccgo to generate consistent results.
    
    Fix the vendoring code to look for /vendor/, not just /vendor, to
    avoid being confused by something like vendor/vendor.org.
    
    Tested by the cmd/go tests in a followup CL.
    
    Reviewed-on: https://go-review.googlesource.com/45695

From-SVN: r249198

    
    These tests fail for various reasons, most commonly because gccgo
    doesn't really have GOROOT, so things like `go build errors` fail.
    
    Reviewed-on: https://go-review.googlesource.com/45696

From-SVN: r249197

    
    Add the environment variable GCCGOTOOLDIR to permit overriding the default
    directory where tools like cgo are found when building with gccgo.
    
    This will be used by the cmd/go tests in a future CL.
    
    Reviewed-on: https://go-review.googlesource.com/45694

From-SVN: r249196

    
    If GO_TESTING_GOTOOLS is set in the environment, permit tests using
    gccgo to run the go tool. Like GO_BUILDER_NAME, this should not be set
    normally. But it is needed when testing the go tool itself, and will
    be set by the gotools Makefile in a future CL.
    
    Reviewed-on: https://go-review.googlesource.com/45693

From-SVN: r249195

    
    Otherwise if DIR does not exist, the path does not work. This matches
    what the gc cmd/compile tool does, because it calls path.Join.
    
    The test for this is the cmd/go tests, to be added in a follow-up CL.
    
    Reviewed-on: https://go-review.googlesource.com/45691

From-SVN: r249194

re PR tree-optimization/81083 (ICE: Unable to coalesce ssa_names 4 and 13 which are marked as MUST COALESCE)

2017-06-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81083
	* gcc.dg/torture/pr81083.c: Add prototypes.

From-SVN: r249193

2017-06-14  Richard Biener  <rguenther@suse.de>

	PR middle-end/81088
	* fold-const.c (split_tree): Drop TREE_OVERFLOW flag from
	literal constants.
	(fold_binary_loc): When associating do not treat pre-existing
	TREE_OVERFLOW on literal constants as a reason to allow
	TREE_OVERFLOW on associated literal constants.

	* c-c++-common/ubsan/pr81088.c: New testcase.

From-SVN: r249192

cp-gimplify.c (cp_genericize_r): Turn most of the function into a switch (TREE_CODE (stmt)) statement from long...

	* cp-gimplify.c (cp_genericize_r): Turn most of the function
	into a switch (TREE_CODE (stmt)) statement from long else if
	sequence.

From-SVN: r249191

	* config/sparc/sparc.h (MASK_ISA): Add MASK_LEON and MASK_LEON3.
	(MASK_FEATURES): New macro.
	* config/sparc/sparc.c (sparc_option_override): Remove the special
	handling of -mfpu and generalize it to all MASK_FEATURES switches.

From-SVN: r249189

simplify-rtx.c (simplify_binary_operation_1): Do not simplify a division of 0 if non-call exceptions are enabled.

	* simplify-rtx.c (simplify_binary_operation_1) <UDIV>: Do not simplify
	a division of 0 if non-call exceptions are enabled.

From-SVN: r249188

PR target/71663
gcc
	* config/aarch64/aarch64.c (aarch64_expand_vector_init):
	Improve vector initialization code gen for only variable case.

gcc/testsuite
	* gcc.target/aarch64/vect-init-1.c: Newtestcase.
	* gcc.target/aarch64/vect-init-2.c: Likewise.
	* gcc.target/aarch64/vect-init-3.c: Likewise.
	* gcc.target/aarch64/vect-init-4.c: Likewise.
	* gcc.target/aarch64/vect-init-5.c: Likewise.


Co-Authored-By: Naveen H.S <Naveen.Hurugalawadi@cavium.com>

From-SVN: r249187

2017-06-14  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/58541
	* g++.dg/cpp0x/constexpr-58541.C: New.

From-SVN: r249186

From-SVN: r249183

re PR tree-optimization/81083 (ICE: Unable to coalesce ssa_names 4 and 13 which are marked as MUST COALESCE)

2017-06-14  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81083
	* tree-ssa-sccvn.c (vn_reference_lookup_3): Do not use abnormals
	as values.

	* gcc.dg/torture/pr81083.c: New testcase.

From-SVN: r249182

	* gcc.dg/tree-ssa/vrp101.c: Fix scan-tree-dump regex.
	* gcc.dg/tree-ssa/builtin-sprintf-2.c: Likewise.  Adjust comment.

From-SVN: r249181

	* gcc.dg/tree-ssa/vrp101.c: Fix scan-tree-dump regex.
	* gcc.dg/tree-ssa/builtin-sprintf-2.c: Likewise.  Adjust comment.

From-SVN: r249180

From-SVN: r249179

	PR c++/80973
	* cp-gimplify.c (cp_genericize_r): Don't instrument MEM_REF second
	argument even if it has REFERENCE_TYPE.

	* g++.dg/ubsan/pr80973.C: New test.

From-SVN: r249174

	PR c++/80984
	* cp-gimplify.c (cp_genericize): Only look for VAR_DECLs in
	BLOCK_VARS (outer) chain.
	(cxx_omp_const_qual_no_mutable): Likewise.

	* g++.dg/opt/nrv18.C: New test.

From-SVN: r249173

	PR go/80964
	* configure.ac: Set NATIVE if host_alias = target_alias.
	* configure: Rebuild.

From-SVN: r249172

	PR objc/80949
	* c-warn.c (do_warn_duplicated_branches): Return if any of the
	branches is null.

From-SVN: r249171

	* config/rs6000/rs6000.c: Update all comments that mentioned SPE.
	(rs6000_expand_builtin): Remove RS6000_BTC_EVSEL.
	* config/rs6000/rs6000.h (RS6000_BTC_EVSEL): Delete.
	* config/rs6000/vxworks.h (VXCPU_FOR_8548): Delete.  Adjust former use.
	* config/rs6000/vxworksae.h (VXCPU_FOR_8548): Delete.
	* config/rs6000/vxworksmils.h (VXCPU_FOR_8548): Delete.

From-SVN: r249170

	* config/rs6000/rs6000-opts.h (enum rs6000_vector): Delete VECTOR_SPE.
	* config/rs6000/rs6000.c (rs6000_debug_vector_unit): Delete VECTOR_SPE.

From-SVN: r249169

	* config/rs6000/rs6000.h (FIXED_SCRATCH): Delete.

From-SVN: r249168

	* config/rs6000/t-rtems: Don't handle SPE.

From-SVN: r249167

	* config/rs6000/t-linux: Don't handle SPE.

From-SVN: r249166

	* config/rs6000/eabispe.h: Delete file.

From-SVN: r249165

	* config/rs6000/t-spe: Delete file.

From-SVN: r249164

	* config/rs6000/rs6000.c (SPE_CONST_OFFSET_OK): Delete.
	(rs6000_legitimate_offset_address_p): Return false for anything in
	V2SImode or V2SFmode.

From-SVN: r249163

This removes the vector modes that were only used by SPE.  It also
rearranges things so it is easier to see what is there, and for what.


	* config/rs6000/rs6000-modes.def: Remove all 8-byte vector modes
	except V2SF and V2SI.  Rearrange the vector modes, and add comments.
	* config/rs6000/rs6000.c (rs6000_debug_reg_global): Remove V8QImode
	and V4HImode.
	(reg_offset_addressing_ok_p): Remove V4HImode and V1DImode.
	(rs6000_legitimate_offset_address_p): Ditto.
	(rs6000_emit_move): Ditto.
	(rs6000_init_builtins): Remove V4HI_type_node.

From-SVN: r249162