This patch that adds -g to the set of negatable prefixes along with -f,
-m and -W.  Besides the mapping from -gno- to negated -g in option_map
and adding g to the [fmW] matches for negatable options, I had to
introduce gno- as an remapping prefix, for the option searching
machinery to backtrack to and recognize as a remapping prefix, instead
of backtracking to -g and stopping at it as if no-* was its Joined
argument.  Adding such remapping prefixes to preempt further
backtracking can be accomplished by introducing the prefix as an
Undocumented option with a Joined argument and without Driver, Target,
Common, or any language-specific option.  Whenever we match such a fake
options prefix, we abandon further backtracking (it matches, after all),
but find_opt returns the same code it would if it hadn't found any
match, so that we resort to option mapping.

I've arranged for such remapping prefixes to not be considered when
looking for and suggesting a correct spelling for misspelled options.
While testing that, I found a few -W-started options that were not
marked as RejectNegative but should (-Wno-a, is not something we'd like
to suggest ;-)  I've also marked as such -g-started options that
it makes no sense to negate, and removed the explicit -gno- ones,
allowing their opposites to be negated.

for  gcc/ChangeLog

	* common.opt (Wa, Wl, Wp, g, gz=): Add
	RejectNegative.
	(gno-column-info): Remove.
	(gcolumn-info): Drop RejectNegative.
	(gno-): New prefix.
	(gno-record-gcc-switches): Remove.
	(grecord-gcc-switches): Drop RejectNegative.
	(gno-split-dwarf): Remove.
	(gsplit-dwarf): Drop RejectNegative.
	(gno-strict-dwarf): Remove.
	(gstrict-dwarf): Drop RejectNegative.
	* config/darwin.opt (gfull, gused): Add RejectNegative.
	* dwarf2out.c (gen_producer_string): Drop
	gno-record-gcc-switches handler.
	* optc-gen.awk: Add g to prefixes with negative forms.
	* opts-common.c (remapping_prefix_p): New.
	(find_opt): Check it.
	(generate_canonical_option): Test g prefix.
	(option_map): Add -gno- mapping.
	(add_misspelling_candidates): Check remapping_prefix_p.

for  gcc/ada/ChangeLog

	* gcc-interface/lang.opt (gant, gnatO, gnat): Add
        RejectNegative.

for  gcc/c-family/ChangeLog

	* c.opt (gen-decls): Add RejectNegative.

From-SVN: r253047

From-SVN: r253046

    
    With -enable-static=no we don't build non-pic objects, but libgotool.a
    is built from non-pic objects.  Build the packages that go into
    libgotool.a in static mode in all cases.
    
    Also ensure that internal test packages are built, since nothing
    explicitly depended on them.
    
    Reviewed-on: https://go-review.googlesource.com/65050

From-SVN: r253042

gcc/testsuite/ChangeLog:

	PR c/81854
	* g++.dg/ext/attr-ifunc-2.C: Correct type errors.
	* g++.dg/ext/attr-ifunc-4.C: Ditto.
	* lib/target-supports.exp: Adjust for C++.

From-SVN: r253041

gcc/testsuite/ChangeLog:

	PR c/81854
	* gcc.dg/attr-ifunc-1.c: Correct type errors.
	* gcc.dg/attr-ifunc-2.c: Ditto.
	* gcc.dg/attr-ifunc-3.c: Ditto.
	* gcc.dg/attr-ifunc-4.c: Ditto.
	* gcc.dg/attr-ifunc-5.c: Ditto.
	* gcc.dg/pr81854.c: Require ifunc support.
	* gcc/testsuite/lib/target-supports.exp: Correct type error.

From-SVN: r253037

	* config/powerpcspe/powerpcspe.c (rs6000_expand_prologue): Fix
	thinko in stack clash protection support.

From-SVN: r253036

	PR libstdc++/79162
	* include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
	(basic_string::_If_sv): Remove from the overload set when the
	argument is derived from basic_string.

From-SVN: r253035

	* explow.c (compute_stack_clash_protection_loop_data): Use
	CONST_INT_P instead of explicit test.  Verify object is a
	CONST_INT_P before looking at INTVAL.
	(anti_adjust_stack_and_probe_stack_clash): Use CONST_INT_P
	instead of explicit test.

	* gcc.target/i386/stack-check-11.c: Update test and regexp
	so that it works for both i?86 and x86_64.

From-SVN: r253034

With the 32-bit SVR4 ABI we don't have a red zone, so we have to restore
the callee-saved registers before we restore the stack pointer.

The previous fix for this PR failed in two ways, for huge frames: first,
we use a negative offset from r11 in that case, so the (mem:BLK 11) access
does no good; second, sched does not handle accesses to mem:BLK correctly
in this case (does not make dependencies).

This patch fixes it by doing a store to (mem:BLK (scratch)) instead.
This means no unrelated (not to stack) loads/stores can be moved over the
stack restore either, but so be it.


	PR target/77687
	* config/rs6000/rs6000.md (stack_restore_tie): Store to a scratch
	address instead of to r1 and r11.

gcc/testsuite/
	PR target/77687
	* gcc.target/powerpc/pr77687.c: New testcase.

From-SVN: r253033

	PR sanitizer/77631
	Support for external debug info.
	* elf.c: Include <errno.h>, <sys/stat.h>, <unistd.h>.
	(S_ISLNK): Define if not defined.
	(xstrnlen): Define if strnlen is not available.
	(b_elf_note): Define type.
	(NT_GNU_BUILD_ID): Define macro.
	(elf_crc32, elf_crc32_file): New static functions.
	(elf_is_symlink, elf_readlink): New static functions.
	(elf_open_debugfile_by_buildid): New static function.
	(elf_try_debugfile): New static function.
	(elf_find_debugfile_by_debuglink): New static function.
	(elf_open_debugfile_by_debuglink): New static function.
	(elf_add): Add filename and debuginfo parameters.  Adjust all
	callers.  Look for external debug info notes, and try to fetch
	debug info from external file.
	(struct phdr_data): Add exe_filename field.
	(phdr_callback): Pass filename to elf_add.
	(backtrace_initialize): Add filename parameter.
	* internal.h (backtrace_initialize): Add filename parameter.
	* fileline.c (fileline_initialize): Pass filename to
	backtrace_initialize.
	* pecoff.c (fileline_initialize): Add unused filename parameter.
	* unknown.c (fileline_initialize): Likewise.
	* xcoff.c (fileline_initialize): Likewise.
	* configure.ac: Check for objcopy --add-gnu-debuglink.
	* Makefile.am (dtest): New test target.
	* configure, Makefile.in: Rebuild.

Co-Authored-By: Denis Khalikov <d.khalikov@partner.samsung.com>

From-SVN: r253032

	P0409R2 - allow lambda capture [=, this]
	* parser.c (cp_parser_lambda_introducer): For cxx2a don't pedwarn on
	redundant [=, this].

	* g++.dg/cpp1z/lambda-this1.C: Don't expect error for c++2a on [=, this]
	capture.  Add further tests.
	* g++.dg/cpp0x/lambda/lambda-capture-redundancy.C: Don't expect error
	for c++2a on [=, this] capture.

From-SVN: r253030

	* g++.dg/cpp1z/cplusplus.C: Test that __cplusplus is equal to 201703L.
	* g++.dg/cpp1z/cplusplus_1z.C: New test.

From-SVN: r253029

	PR libstdc++/79162
	* include/bits/basic_string.h (basic_string::_If_sv): Remove from the
	overload set when the argument is derived from basic_string.
	* testsuite/21_strings/basic_string/cons/char/moveable2_c++17.cc: New
	test.
	* testsuite/21_strings/basic_string/cons/wchar_t/moveable2_c++17.cc:
	New test.

From-SVN: r253024

    
    Reviewed-on: https://go-review.googlesource.com/64990

From-SVN: r253022

    
    Reviewed-on: https://go-review.googlesource.com/64552

From-SVN: r253021

	* testsuite/24_iterators/range_access_cpp17.cc: Fix order of dg-do
	and dg-options directives. Fix invalid test.

From-SVN: r253019

	PR libstdc++/81469
	* libsupc++/exception (uncaught_exception): Deprecate for C++17.
	* testsuite/18_support/exception_ptr/62258.cc: Add -Wno-deprecated.
	* testsuite/18_support/uncaught_exception/14026.cc: Likewise.

From-SVN: r253018

	* include/bits/c++config (_GLIBCXX17_DEPRECATED): Define.
	* include/bits/functional_hash.h (__hash_base::result_type)
	(__hash_base::argument_type): Add _GLIBCXX17_DEPRECATED.
	* include/std/optional (hash<optional<T>>::result_type)
	(hash<optional<T>>::argument_type): Add deprecated attribute.
	(__is_fast_hash<hash<optional<T>>>): Add partial specialization.
	* include/std/variant (hash<variant<Types...>>::result_type)
	(hash<variant<Types...>>::argument_type): Add deprecated attribute.
	(__is_fast_hash<hash<variant<Types...>>>): Add partial specialization.

From-SVN: r253017

    
    Reviewed-on: https://go-review.googlesource.com/64551

From-SVN: r253016

gcc/

        * config.gcc: Support "knm".
        * config/i386/driver-i386.c (host_detect_local_cpu): Detect "knm".
        * config/i386/i386-c.c (ix86_target_macros_internal): Handle
        PROCESSOR_KNM.
        * config/i386/i386.c (m_KNM): Define.
        (processor_target_table): Add "knm".
        (PTA_KNM): Define.
        (ix86_option_override_internal): Add "knm".
        (ix86_issue_rate): Add PROCESSOR_KNM.
        (ix86_adjust_cost): Ditto.
        (ia32_multipass_dfa_lookahead): Ditto.
        (get_builtin_code_for_version): Handle PROCESSOR_KNM.
        (fold_builtin_cpu): Add M_INTEL_KNM.
        * config/i386/i386.h (processor_costs): Define TARGET_KNM.
        (processor_type): Add PROCESSOR_KNM.
         * config/i386/x86-tune.def: Add m_KNM.
        * doc/invoke.texi: Add knm as x86 -march=/-mtune= CPU type.

libgcc/
        * config/i386/cpuinfo.h (processor_types): Add INTEL_KNM.
        * config/i386/cpuinfo.c (get_intel_cpu): Detect Knights Mill.

gcc/testsuite/

        * gcc.target/i386/builtin_target.c: Test knm.
        * gcc.target/i386/funcspec-56.inc: Test arch=knm.

From-SVN: r253013

From-SVN: r253012

	* libsupc++/exception_ptr.h (copy_exception): Remove deprecated
	non-standard function.

From-SVN: r253011

	PR libstdc++/82262
	* include/std/optional (__optional_hash_call_base): Add template
	parameter for remove_const_t<_Tp> and use it consistently.
	* testsuite/20_util/optional/hash.cc: Test optional<const T>.

From-SVN: r253010

2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/80213
	* graphite-scop-detection.c (trivially_empty_bb_p): Labels
	are allowed in empty BBs as well.
	(canonicalize_loop_closed_ssa): Also look for other complex
	edges.
	(scop_detection::get_sese): Include the loop-closed PHI block
	in loop SESEs.
	(scop_detection::merge_sese): Remove code adding extra blocks.
	(scop_detection::region_has_one_loop): Adjust for get_sese changes.
	(build_scops): Assert the final returned scop is invalid.

From-SVN: r253008

re PR tree-optimization/77362 ([graphite] ICE in sese_build_liveouts_use w/ -O2 -floop-nest-optimize)

2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/77362
	* gcc.dg/graphite/pr77362.c: New testcase.

From-SVN: r253006

2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/82264
	* tree-ssa-sccvn.c (vn_phi_eq): Use safe_dyn_cast to check
	for GIMPLE_CONDs.
	(vn_phi_lookup): Likewise.
	(vn_phi_insert): Likewise.

	* gcc.dg/torture/pr82264.c: New testcase.

From-SVN: r253005

	* dwarf2out.c (tree_add_const_value_attribute): For INTEGER_CST
	that fits into uhwi or shwi, add DW_AT_const_value regardless
	of early_dwarf without going through RTL, using add_AT_unsigned
	or add_AT_int.

	* g++.dg/debug/dwarf2/template-params-13.C: New test.
	* g++.dg/debug/dwarf2/template-params-5.C: Adjust regexps so that
	it doesn't match newlines.
	* g++.dg/debug/dwarf2/template-params-3.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-3.C: Likewise.
	* g++.dg/debug/dwarf2/lang-cpp98.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-2.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-1.C: Likewise.
	* g++.dg/debug/dwarf2/template-func-params-5.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-1.C: Likewise.
	* g++.dg/debug/dwarf2/template-params-2.C: Likewise.
	* g++.dg/debug/dwarf2/lang-cpp14.C: Likewise.
	* g++.dg/debug/dwarf2/lang-cpp11.C: Likewise.

From-SVN: r253004

	* dwarf2out.c (DEBUG_LTO_DWO_INFO_SECTION): Reorder defines.
	(DEBUG_LTO_ABBREV_SECTION): Likewise.
	(DEBUG_LTO_MACINFO_SECTION): Likewise.
	(DEBUG_MACRO_SECTION): Likewise.
	(DEBUG_LTO_MACRO_SECTION): Likewise.
	(DEBUG_STR_DWO_SECTION): Likewise.
	(DEBUG_LTO_STR_DWO_SECTION): Likewise.
	(DEBUG_LTO_LINE_SECTION): Drop .dwo suffix from the name.
	(DEBUG_LTO_DWO_LINE_SECTION): Define.
	(DEBUG_LTO_LINE_STR_SECTION): Define.
	(init_sections_and_labels): Initialize debug_line_str_section
	variable.  Initialize debug_loc_section for -gdwarf-5 to
	DEBUG_LOCLISTS_SECTION.  Formatting fixes.

From-SVN: r253003

2017-09-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/64954
	* g++.dg/cpp0x/constexpr-ctor20.C: New.

From-SVN: r253002

graphite-sese-to-poly.c (extract_affine): Properly handle POINTER_PLUS_EXPR, BIT_NOT_EXPR and conversion to signed.

2017-09-20  Richard Biener  <rguenther@suse.de>

	* graphite-sese-to-poly.c (extract_affine): Properly handle
	POINTER_PLUS_EXPR, BIT_NOT_EXPR and conversion to signed.

From-SVN: r253001

2017-09-20  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/81373
	* graphite-scop-detection.c (build_cross_bb_scalars_def):
	Force SESE live-out defs to be handled even if they are
	scev_analyzable_p.

	* gcc.dg/graphite/pr81373.c: New testcase.

From-SVN: r253000

combine-stack-adj.c (combine_stack_adjustments_for_block): Do nothing for stack adjustments with REG_STACK_CHECK.

	* combine-stack-adj.c (combine_stack_adjustments_for_block): Do
	nothing for stack adjustments with REG_STACK_CHECK.
	* sched-deps.c (parse_add_or_inc): Reject insns with
	REG_STACK_CHECK from dependency breaking.
	* config/i386/i386.c (pro_epilogue_adjust_stack): Return insn.
	(ix86_adjust_satck_and_probe_stack_clash): Add REG_STACK_NOTEs.
	* reg-notes.def (STACK_CHECK): New note.

	* gcc.target/i386/stack-check-11.c: New test.

From-SVN: r252999

	* config/i386/i386.c (ix86_adjust_stack_and_probe_stack_clash): New.
	(ix86_expand_prologue): Dump stack clash info as needed.
	Call ix86_adjust_stack_and_probe_stack_clash as needed.

	* gcc.dg/stack-check-4.c: New test.
	* gcc.dg/stack-check-5.c: New test.
	* gcc.dg/stack-check-6.c: New test.
	* gcc.dg/stack-check-6a.c: New test.
	* gcc.dg/stack-check-7.c: New test.
	* gcc.dg/stack-check-8.c: New test.
	* gcc.dg/stack-check-9.c: New test.
	* gcc.dg/stack-check-10.c: New test.
	* lib/target-supports.exp
	(check_effective_target_supports_stack_clash_protection): Enable for
	x86 and x86_64 targets.

From-SVN: r252998

        * function.c (dump_stack_clash_frame_info): New function.
        * function.h (dump_stack_clash_frame_info): Prototype.
        (enum stack_clash_probes): New enum.

From-SVN: r252997

	* config/alpha/alpha.c (alpha_expand_prologue): Also check
	flag_stack_clash_protection.
	* config/arm/arm.c (arm_compute_static_chain_stack_bytes): Likewise.
	(arm_expand_prologue, thumb1_expand_prologue): Likewise.
	(arm_frame_pointer_required): Likewise.
	* config/ia64/ia64.c (ia64_compute_frame_size): Likewise.
	(ia64_expand_prologue): Likewise.
	* config/mips/mips.c (mips_expand_prologue): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_expand_prologue): Likewise.
	* config/sparc/sparc.c (sparc_expand_prologue): Likewise.
	(sparc_flat_expand_prologue): Likewise.
	* config/spu/spu.c (spu_expand_prologue): Likewise.

From-SVN: r252996

2017-09-18  Jeff Law  <law@redhat.com>

	* explow.c: Include "params.h".
	(anti_adjust_stack_and_probe_stack_clash): New function.
	(get_stack_check_protect): Likewise.
	(compute_stack_clash_protection_loop_data): Likewise.
	(emit_stack_clash_protection_loop_start): Likewise.
	(emit_stack_clash_protection_loop_end): Likewise.
	(allocate_dynamic_stack_space): Use get_stack_check_protect.
	Use anti_adjust_stack_and_probe_stack_clash.
	* explow.h (compute_stack_clash_protection_loop_data): Prototype.
	(emit_stack_clash_protection_loop_start): Likewise.
	(emit_stack_clash_protection_loop_end): Likewise.
	* rtl.h (get_stack_check_protect): Prototype.
	* target.def (stack_clash_protection_final_dynamic_probe): New hook.
	* targhooks.c (default_stack_clash_protection_final_dynamic_probe): New.
	* targhooks.h (default_stack_clash_protection_final_dynamic_probe):
	Prototype.
	* doc/tm.texi.in (TARGET_STACK_CLASH_PROTECTION_FINAL_DYNAMIC_PROBE):
	Add @hook.
	* doc/tm.texi: Rebuilt.
	* config/aarch64/aarch64.c (aarch64_expand_prologue): Use
	get_stack_check_protect.
	* config/alpha/alpha.c (alpha_expand_prologue): Likewise.
	* config/arm/arm.c (arm_expand_prologue): Likewise.
	(arm_frame_pointer_required): Likewise.
	* config/i386/i386.c (ix86_expand_prologue): Likewise.
	* config/ia64/ia64.c (ia64_expand_prologue): Likewise.
	* config/mips/mips.c (mips_expand_prologue): Likewise.
	* config/powerpcspe/powerpcspe.c (rs6000_emit_prologue): Likewise.
	* config/rs6000/rs6000.c (rs6000_emit_prologue): Likewise.
	* config/sparc/sparc.c (sparc_expand_prologue): Likewise.
	(sparc_flat_expand_prologue): Likewise.

	* gcc.dg/stack-check-3.c: New test.

From-SVN: r252995

	* common.opt (-fstack-clash-protection): New option.
	* flag-types.h (enum stack_check_type): Note difference between
	-fstack-check= and -fstack-clash-protection.
	* params.def (PARAM_STACK_CLASH_PROTECTION_GUARD_SIZE): New PARAM.
	(PARAM_STACK_CLASH_PROTECTION_PROBE_INTERVAL): Likewise.
	* toplev.c (process_options): Issue warnings/errors for cases
	not handled with -fstack-clash-protection.
	* doc/invoke.texi (-fstack-clash-protection): Document new option.
	(-fstack-check): Note additional problem with -fstack-check=generic.
	Note that -fstack-check is primarily for Ada and refer users
	to -fstack-clash-protection for stack-clash-protection.
	Document new params for stack clash protection.

	* gcc.dg/stack-check-2.c: New test.
	* lib/target-supports.exp
	(check_effective_target_supports_stack_clash_protection): New function.
	(check_effective_target_frame_pointer_for_non_leaf): Likewise.
	(check_effective_target_caller_implicit_probes): Likewise.

From-SVN: r252994

    
    In the 1.9 upgrade I took out the word "goroutine" from a traceback
    showing a goroutine running in C code, to let TestCgoNumGoroutine
    pass.  However, it turns out that some code is actually checking for
    that string; for example,
    https://github.com/grpc/grpc-go/blob/master/test/leakcheck/leakcheck.go#L44
    So keep the message the same, and change the test.
    
    Reviewed-on: https://go-review.googlesource.com/64850

From-SVN: r252991

From-SVN: r252990

	* config/i386/i386.md (*scc_bt<mode>): New insn_and_split pattern.
	(*scc_bt<mode>_1): Ditto.
	(*scc_bt<mode>_mask): Ditto.

testsuite/ChangeLog:

	* gcc.target/i386/bt-5.c: New test.
	* gcc.target/i386/bt-6.c: Ditto.
	* gcc.target/i386/bt-mask-3.c: Ditto.
	* gcc.target/i386/bt-mask-4.c: Ditto.

From-SVN: r252986