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

From-SVN: r256392

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 (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

    
    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

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

	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

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

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

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

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

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

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

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

From-SVN: r256378

	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

From-SVN: r256374

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

From-SVN: r256370

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

From-SVN: r256369

	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

	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

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

    
    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

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

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

From-SVN: r256364

	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

From-SVN: r256361

[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

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

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

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

	* expr.c (gfc_check_pointer_assign): Fix typo in comment.

From-SVN: r256352

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: r256351

	PR rtl-optimizatin/81308
	* tree-switch-conversion.c (cfg_altered): New file scoped static.
	(process_switch): If group_case_labels makes a change, then set
	cfg_altered.
	(pass_convert_switch::execute): If a switch is converted, then
	set cfg_altered.  Return TODO_cfg_cleanup if cfg_altered is true.

	PR rtl-optimizatin/81308
	* g++.dg/pr81308-1.C: New test.
	* g++.dg/pr81308-2.C: New test.

From-SVN: r256349

	PR rtl-optimization/81308
	* recog.c (split_all_insns): Conditionally cleanup the CFG after
	splitting insns.

From-SVN: r256348

rs6000.c (rs6000_legitimate_combined_insn): Updated with the new names of the branch decrement patterns...

* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
	with the new names of the branch decrement patterns, and added the
	names of the branch decrement conditional patterns.

From-SVN: r256347

gcc/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

	PR target/83663 - Revert r255946
	* config/aarch64/aarch64.c (aarch64_expand_vector_init): Modify code
	generation for cases where splatting a value is not useful.
	* simplify-rtx.c (simplify_ternary_operation): Simplify vec_merge
	across a vec_duplicate and a paradoxical subreg forming a vector
	mode to a vec_concat.

gcc/testsuite/

2018-01-08  Vidya Praveen  <vidyapraveen@arm.com>

	PR target/83663 - Revert r255946
	* gcc.target/aarch64/vect-slp-dup.c: New.

From-SVN: r256346

We don't have the t-aprofile, t-multilib and t-arm-elf mapping
rules for multilibs when using the variants of -march=armv8.3-a
and the dotproduct extension.
This patch adds them. -march=armv8.3-a behaves in the same
way as -march=armv8.2-a in this regard.

Bootstrapped and tested with the aprofile multilib list.
Checked that --print-multi-directory gives sensible results
with armv8.3-a options and extensions.
I've also added some armv8.3-a, fp16 and dotprod
combination tests to multilib.exp

	* config/arm/t-aprofile (MULTILIB_MATCHES): Add mapping rules for
	-march=armv8.3-a variants.
	* config/arm/t-multilib: Likewise.
	* config/arm/t-arm-elf: Likewise.  Handle dotprod extension.

	* gcc.target/arm/multilib.exp: Add fp16, dotprod and armv8.3-a
	combination tests.

From-SVN: r256345

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

	* config/rs6000/rs6000.md (cceq_ior_compare): Remove * so I can use it
	to generate rtl.
	(cceq_ior_compare_complement): Give it a name so I can use it, and
	change boolean_or_operator predicate to boolean_operator so it can
	be used to generate a crand.
	(eqne): New code iterator.
	(bd/bd_neg): New code_attrs.
	(<bd>_<mode>): New name for ctr<mode>_internal[12] now combined into
	a single define_insn.
	(<bd>tf_<mode>): A new insn pattern for the conditional form branch
	decrement (bdnzt/bdnzf/bdzt/bdzf).
	* config/rs6000/rs6000.c (rs6000_legitimate_combined_insn): Updated
	with the new names of the branch decrement patterns, and added the
	names of the branch decrement conditional patterns.

From-SVN: r256344

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/83563
	* graphite.c (canonicalize_loop_closed_ssa_form): Reset the SCEV
	cache.

	* gcc.dg/graphite/pr83563.c: New testcase.

From-SVN: r256343

2018-01-08  Richard Biener  <rguenther@suse.de>

	PR middle-end/83713
	* convert.c (do_narrow): Properly guard TYPE_OVERFLOW_WRAPS checks.

	* g++.dg/torture/pr83713.C: New testcase.

From-SVN: r256341