In internal/bytealg correct a +build tag to never build indexbyte_generic.go
    for the gofrontend, where we always use indexbyte_native.go.
    
    For internal/cpu let the Makefile define CacheLineSize using goarch.sh,
    rather than trying to enumerate all the possibilities in cpu_ARCH.go files.
    
    In internal/poll call the C fcntl function rather than using SYS_FCNTL.
    Change mksysinfo.sh to ensure that F_GETPIPE_SZ is always defined,
    and check that in internal/poll.
    
    Reviewed-on: https://go-review.googlesource.com/137256

From-SVN: r264572

	* config/i386/i386.md (frndintxf2_mask_pm): Remove.
	(frndintxf2_mask_pm_i387): Ditto.
	(nearbyintxf2): Rewrite expander pattern to match rintxf2.
	Enable for !flag_trapping_math.
	(nearbyint<mode>2): Enable x87 modes for !flag_trapping_math.
	Enable SSE modes for TARGET_SSE4_1 and expand them with round insn.
	Change operand 1 predicate to nonimmediate_operand.
	(attr "i387_cw"): Remove mask_pm.
	* config/i386/i386.h (enum ix86_stack_slot): Remove SLOT_CW_MASK_PM.
	(enum ix86_entity): Remove I387_MASK_PM.
	* config/i386/i386.c (ix86_i387_mode_needed): Do not
	handle I387_MASK_PM.
	(ix86_mode_needed): Ditto.
	(ix86_mode_after): Ditto.
	(ix86_mode_entry): Ditto.
	(ix86_mode_exit): Ditto.
	(emit_i387_cw_initialization): Do not handle I387_CW_MASK_PM.

From-SVN: r264571

    
    This permits TestScript to work when gccgo is not installed.
    Previous testing was using a previously installed gccgo, not the newly
    built one.
    
    This revealed that the testing of whether an internal package is
    permitted was incorrect for standard library packages, since the
    uninstalled gccgo can see internal packages in the uninstalled libgo.
    Fix the internal package tests.
    
    This permitted removing a couple of gccgo-specific changes in the
    testsuite.
    
    Reviewed-on: https://go-review.googlesource.com/137255

From-SVN: r264570

Compile pr82699-5.c and pr82699-6.c with -fno-pic to avoid

FAIL: gcc.target/i386/pr82699-5.c (test for excess errors)
Excess errors:
cc1: sorry, unimplemented: -mfentry isn't supported for 32-bit in combination with -fpic
FAIL: gcc.target/i386/pr82699-6.c (test for excess errors)
Excess errors:
cc1: error: -mnop-mcount is not implemented for -fPIC
cc1: sorry, unimplemented: -mfentry isn't supported for 32-bit in combination with -fpic

when running GCC testsuite with --target_board='unix{-fpic\ -m32,-fpic}'.

	PR target/82699
	* gcc.target/i386/pr82699-5.c: Add -fno-pic for ia32.
	* gcc.target/i386/pr82699-6.c: Add -fno-pic.

From-SVN: r264569

	* gfortran.dg/coarray_lock_7.f90: Adjust scan-tree-dump-times for
	ILP32.

From-SVN: r264568

vr-values.c (vr_values::vr_values): Initialize to_remove_edges and to_update_switch_stmts to vNULL instead of...

	* vr-values.c (vr_values::vr_values): Initialize to_remove_edges and
	to_update_switch_stmts to vNULL instead of calling create on them
	immediately.

From-SVN: r264567

2018-09-25  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/87402
	* tree-ssa-sccvn.c (SSA_VISITED): Remove unused function.
	(visit_phi): Re-instantiate handling of supposed to be VARYING
	but non-VARYING backedge value.

	* gcc.dg/torture/pr87402.c: New testcase.

From-SVN: r264566

We need to check pie_enabled target in PIC tests to support GCC where
PIE is enabled by default when configured with --enable-default-pie.

	PR testsuite/70150
	* gcc.dg/20020312-2.c (dg-additional-options): Set to "-no-pie"
	for pie_enabled target.
	* gcc.dg/uninit-19.c: Check pie_enabled for PIC.
	* gcc.target/i386/pr34256.c: Likewise.

From-SVN: r264565

2018-09-25  Richard Biener  <rguenther@suse.de>

	PR debug/83941
	* dwarf2out.c (struct sym_off_pair): New.
	(external_die_map): New global.
	(lookup_decl_die): When in LTO create DIEs lazily from the
	external_die_map.
	(lookup_block_die): New function, create DIEs lazily in LTO.
	(equate_block_to_die): New function.
	(dwarf2out_die_ref_for_decl): During WPA get the association
	from the external DIE map.
	(dwarf2out_register_external_die): Record mapping into the
	external DIE map.
	(maybe_create_die_with_external_ref): New function split out from
	DIE generation part of old dwarf2out_register_external_die.
	(add_abstract_origin_attribute): Do not return the DIE.  When
	in LTO reference externals directly.
	(dwarf2out_abstract_function): When in LTO ignore calls for
	decls with external DIEs (already present abstract instances).
	(gen_call_site_die): Adjust.
	(add_high_low_attributes): Likewise.
	(gen_lexical_block_die): Likewise.
	(gen_inlined_subroutine_die): Likewie.
	(gen_block_die): Likewise.
	(dwarf2out_inline_entry): Likewise.
	(dwarf2out_early_finish): In LTRANS phase create DW_TAG_imported_unit
	DIEs.

From-SVN: r264564

2018-09-25  Martin Liska  <mliska@suse.cz>

	* ipa-fnsummary.c (estimate_node_size_and_time): Scale by two
	integers and not by a float value.

From-SVN: r264563

2018-09-25  Martin Liska  <mliska@suse.cz>

	PR fortran/87394
	* dbgcnt.c (dbg_cnt_process_single_pair): Return false
	instead of NULL.
	* dumpfile.c (dump_enable_all): Remove extra parenthesis.
	* gcov-tool.c: Declare the function with ATTRIBUTE_NORETURN.
	* godump.c (go_format_type): Remove extra parenthesis.
2018-09-25  Martin Liska  <mliska@suse.cz>

	PR fortran/87394
	* decl.c (add_hidden_procptr_result): Simplify condition
	as we are in branch witch 'case1 || case2'.

From-SVN: r264562

2018-09-25  Martin Liska  <mliska@suse.cz>

	* alias.c (set_dest_equal_p): Remove unused function.
	* config/i386/i386.c (def_builtin_pure2): Likewise.
	* diagnostic-show-locus.c (class layout): Remove
	unused field.
	(layout::layout): Likewise here.
	* dump-context.h (class temp_dump_context): Likewise.
	* dwarf2out.c (add_AT_fde_ref): Remove unused function.
	(add_AT_loclistsptr): Likewise.
	(add_AT_offset): Likewise.
	(get_AT_hi_pc): Likewise.
	(is_comdat_die): Likewise.
	(type_is_enum): Likewise.
	(ceiling): Likewise.
	(add_AT_vms_delta): Likewise.
	(is_class_die): Likewise.
	* edit-context.c (class line_event): Remove unused field.
	* graphite-sese-to-poly.c (tree_int_to_gmp): Remove
	unused function.
	* ipa-cp.c (ipa_get_vr_lat): Likewise.
	* lra-constraints.c (ok_for_index_p_nonstrict): Likewise.
	(ok_for_base_p_nonstrict): Likewise.
	* tree-chrec.c (is_not_constant_evolution): Likewise.
	(chrec_fold_poly_cst): Likewise.
	* tree-if-conv.c (has_pred_critical_p): Likewise.
	* tree-ssa-coalesce.c (print_exprs): Likewise.
	* tree-ssa-pre.c (bitmap_set_contains_expr): Likewise.
	* tree-ssa-uninit.c (is_and_or_or_p): Likewise.
	* tree-vrp.c (value_ranges_intersect_p): Likewise.
	(value_range_nonnegative_p): Likewise.
2018-09-25  Martin Liska  <mliska@suse.cz>

	* name-lookup.c (namespace_scope_ht_size): Remove
	unused function.
	* parser.c (cp_lexer_next_token_is_not_keyword): Likewise.
2018-09-25  Martin Liska  <mliska@suse.cz>

	* trans.c (remove_suffix): Remove
	unused function.
2018-09-25  Martin Liska  <mliska@suse.cz>

	* gofrontend/escape.cc (Gogo::analyze_escape): Remove
	usage of a parameter.
	(Gogo::assign_connectivity): Likewise.
	(class Escape_analysis_tag): Likewise.
	(Gogo::tag_function): Likewise.
	* gofrontend/expressions.cc (Call_expression::do_type): Likewise.
	* gofrontend/gogo.h (class Gogo): Likewise.
	* gofrontend/types.cc (class Call_multiple_result_type): Likewise.
	(Type::make_call_multiple_result_type): Likewise.
	* gofrontend/types.h (class Type): Likewise.
	* gofrontend/wb.cc (class Check_escape): Likewise.
	(Gogo::add_write_barriers): Likewise.

From-SVN: r264561

2018-09-25  Martin Liska  <mliska@suse.cz>

	* filter-rtags-warnings.py: New file.

From-SVN: r264560

2018-09-25  Martin Liska  <mliska@suse.cz>

	* config/powerpcspe/powerpcspe.c (rs6000_output_function_epilogue):
	Do not handle "GNU Pascal".
	* config/rs6000/rs6000.c (rs6000_output_function_epilogue):
	Likewise.
	* config/sparc/sparc.c (sparc_pass_by_reference): Remove Pascal
	from documentation. Likewise.
	* dbxout.c (dbxout_range_type): Likewise.
	* doc/cpp.texi: Likewise.
	* doc/extend.texi: Likewise.
	* doc/frontends.texi: Likewise.
	* doc/invoke.texi: Remove Pascal entry.
	* tree.def (CLEANUP_POINT_EXPR): Likewise.
	* doc/rtl.texi (MODE_FUNCTION): Remove not used entry.
2018-09-25  Martin Liska  <mliska@suse.cz>

	* c-common.c (c_common_truthvalue_conversion):
	Remove Pascal from documentation.

From-SVN: r264559

2018-09-25  Martin Liska  <mliska@suse.cz>

	PR middle-end/86078
	* doc/invoke.texi: Document all parameters and remove default
	of the parameters.
2018-09-25  Martin Liska  <mliska@suse.cz>

	PR middle-end/86078
	* check-params-in-docs.py: New file.

From-SVN: r264558

"r264537: Change EQ_ATTR_ALT to support up to 64 alternatives" changed
the format of EQ_ATTR_ALT from ii to ww.  This broke the bootstrap on
32-bit systems, because the formula for rtx_code_size assumed that only
certain codes contain HOST_WIDE_INTs.  This did not surface on 64-bit
systems, because rtunion is 8 bytes anyway, but on 32-bit systems it's
only 4 bytes.  This resulted in out-of-bounds writes and memory
corruptions in genattrtab.

gcc/ChangeLog:

2018-09-25  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR bootstrap/87417
	* rtl.c (rtx_code_size): Take into account that EQ_ATTR_ALT
	contains HOST_WIDE_INTs when computing its size.

From-SVN: r264556

	gcc/
	PR target/87391
	* config/riscv/riscv.h (STACK_BOUNDARY): Test riscv_abi == ABI_ILP32E
	not TARGET_RVE.
	(ABI_STACK_BOUNDARY, MAX_ARGS_IN_REGISTERS): Likewise.

From-SVN: r264555

From-SVN: r264552

2018-09-24  Andrew Pinski  <apinski@marvell.com>

        *  config/aarch64/aarch64.c (aarch_macro_fusion_pair_p): Don't
        access prev before checking it for NULLness in the
        AARCH64_FUSE_CMP_BRANCH case.

From-SVN: r264548

	* doc/xml/manual/codecvt.xml: Move link to "UTF-8 and Unicode FAQ"
	to https.

From-SVN: r264547

    
    Reviewed-on: https://go-review.googlesource.com/136435

gotools/:
	* Makefile.am (mostlyclean-local): Run chmod on check-go-dir to
	make sure it is writable.
	(check-go-tools): Likewise.
	(check-vet): Copy internal/objabi to check-vet-dir.
	* Makefile.in: Rebuild.

From-SVN: r264546

	* cp-tree.h (build_noexcept_spec, add_exception_specifier): Adjust
	declarations.
	* except.c (build_noexcept_spec): Change the type of the complain
	parameter to tsubst_flags_t.
	* typeck2.c (add_exception_specifier): Likewise.

From-SVN: r264543

/cp
2018-09-24  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85070
	* method.c (lazily_declare_fn): During error-recovery add_method
	may return false.

/testsuite
2018-09-24  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/85070
	* g++.dg/cpp0x/pr85070.C: New.

From-SVN: r264541

ENDBR must be the first instruction of a function.  This patch queues
ENDBR if we need to put the profiling counter call before the prologue
and generate ENDBR before the profiling counter call.

gcc/

	PR target/82699
	* config/i386/i386.c (rest_of_insert_endbranch): Set
	endbr_queued_at_entrance to true and don't insert ENDBR if
	x86_function_profiler will be called.
	(x86_function_profiler): Insert ENDBR if endbr_queued_at_entrance
	is true.
	* config/i386/i386.h (machine_function): Add
	endbr_queued_at_entrance.

gcc/testsuite/

	PR target/82699
	* gcc.target/i386/pr82699-1.c: New file.
	* gcc.target/i386/pr82699-2.c: Likewise.
	* gcc.target/i386/pr82699-3.c: Likewise.
	* gcc.target/i386/pr82699-4.c: Likewise.
	* gcc.target/i386/pr82699-5.c: Likewise.
	* gcc.target/i386/pr82699-6.c: Likewise.

From-SVN: r264540

2018-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/87397
	* gfc_conv_procedure_call: Do not add clobber on INTENT(OUT)
	for variables in an associate statement.

2018-09-24  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/87401
	* gfortran.dg/intent_out_12.f90: New test.

From-SVN: r264539

[testsuite]

2018-09-24  Will Schmidt  <will_schmidt@vnet.ibm.com>

	PR testsuite/86952
	* gcc.target/powerpc/p8-vec-xl-xst-v2.c: Add and
	update expected codegen

From-SVN: r264538

On S/390 there is a need to support more than 32 instruction
alternatives per define_insn.  Currently this is not explicitly
prohibited or unsupported: MAX_RECOG_ALTERNATIVES is equal 35, and,
futhermore, the related code uses uint64_t for bitmaps in most places.

However, genattrtab contains the logic to convert (eq_attr "attribute"
"value") RTXs to (eq_attr_alt bitmap) RTXs, where bitmap contains
alternatives, whose "attribute" has the corresponding "value".
Unfortunately, bitmap is only 32 bits.

When adding the 33rd alternative, this led to (eq_attr "type" "larl")
becoming (eq_attr_alt -1050625 1), where -1050625 == 0xffeff7ff.  The
cleared bits 12, 21 and 32 correspond to two existing and one newly
added insn of type "larl".  compute_alternative_mask sign extended this
to 0xffffffffffeff7ff, which contained non-existent alternatives, and
this made simplify_test_exp fail with "invalid alternative specified".

I'm not sure why it didn't fail the same way before, since the top bit,
which led to sign extension, should have been set even with 32
alternatives.  Maybe simplify_test_exp was not called for "type"
attribute for some reason?

This patch widens EQ_ATTR_ALT bitmap to 64 bits, making it possible to
gracefully handle up to 64 alternatives.  It eliminates the problem with
the 33rd alternative on S/390.

gcc/ChangeLog:

2018-09-24  Ilya Leoshkevich  <iii@linux.ibm.com>

	* genattrtab.c (mk_attr_alt): Use alternative_mask.
	(attr_rtx_1): Adjust caching to match the new EQ_ATTR_ALT field
        types.
	(check_attr_test): Use alternative_mask.
	(get_attr_value): Likewise.
	(compute_alternative_mask): Use alternative_mask and XWINT.
	(make_alternative_compare): Use alternative_mask.
	(attr_alt_subset_p): Use XWINT.
	(attr_alt_subset_of_compl_p): Likewise.
	(attr_alt_intersection): Use alternative_mask and XWINT.
	(attr_alt_union): Likewise.
	(attr_alt_complement): Use HOST_WIDE_INT and XWINT.
        (mk_attr_alt): Use alternative_mask and HOST_WIDE_INT.
	(simplify_test_exp): Use alternative_mask and XWINT.
	(write_test_expr): Use alternative_mask and XWINT, adjust bit
        number calculation to support 64 bits.  Generate code that
        checks 64-bit masks.
	(main): Use alternative_mask.
	* rtl.def (EQ_ATTR_ALT): Change field types from ii to ww.

From-SVN: r264537

	gcc/fortran/
	* openmp.c (resolve_oacc_loop_blocks):

	gcc/testsuite/
	* gfortran.dg/goacc/nested-parallelism.f90: New test.

From-SVN: r264536

S/390 epilogue ends with (parallel [(return) (use %r14)]) instead of
the more usual (return) or (simple_return).  This sequence is not
recognized by the conditional return logic in try_optimize_cfg ().

This was introduced for processors older than z196, where it is
sometimes profitable to use call-clobbered register for returning
instead of %r14.  On newer processors we always return via %r14,
for which the fact that it's used is already reflected by
EPILOGUE_USES.  In this case a simple (return) suffices.

This patch changes return_use () to emit simple (return)s when
returning via %r14.  The resulting sequences are recognized by the
conditional return logic in try_optimize_cfg ().

gcc/ChangeLog:

2018-09-24  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/80080
	* config/s390/s390.c (s390_emit_epilogue): Do not use PARALLEL
	RETURN+USE when returning via %r14.

gcc/testsuite/ChangeLog:

2018-09-24  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/80080
	* gcc.target/s390/risbg-ll-3.c: Expect conditional returns.
	* gcc.target/s390/zvector/vec-cmp-2.c: Likewise.

From-SVN: r264535

2018-09-24  Martin Liska  <mliska@suse.cz>

	* gcov.c (output_lines): Print colorization legend
	for both flag_use_colors and flag_use_hotness_colors.
	Reword the help.

From-SVN: r264531

2018-09-24  Martin Liska  <mliska@suse.cz>

	* coverage.c (get_coverage_counts): Use warning_at
	with current_function_decl location. Use %qD in warning
	message.

From-SVN: r264530

2018-09-24  Martin Liska  <mliska@suse.cz>

	* memory-block.h (memory_block_pool::release): Annotate with
	valgrind that the memory is not accessible.

From-SVN: r264529

2018-09-24  Martin Liska  <mliska@suse.cz>

	PR sanitizer/85774
	* asan.c: Make asan_handled_variables extern.
	* asan.h: Likewise.
	* cfgexpand.c (expand_stack_vars): Make sure
	a representative is unpoison if another
	variable in the partition is handled by
	use-after-scope sanitization.
2018-09-24  Martin Liska  <mliska@suse.cz>

	PR sanitizer/85774
	* g++.dg/asan/pr85774.C: New test.

From-SVN: r264528

	* doc/xml/manual/policy_data_structures_biblio.xml: Update link
	to "Priority Queues and the STL".

From-SVN: r264527

The test assumed __int128 to be available whenever __SSE__ was
defined, but this assumption doesn't hold on 32-bit x86.  Fixed.

for  gcc/testsuite/ChangeLog

	PR middle-end/87054
	* gcc.dg/pr87054.c: Adjust for no __int128 on x86.

From-SVN: r264526

re PR ada/87396 (ada/gcc-interface/decl.c:8798:53:Value Conversion Issue: implicit conversion from 'int' to 'char' changes value from 132 to -124: -Wconstant-conversion)

	PR ada/87396
	* fe.h (Get_Attribute_Definition_Clause): Use 'unsigned char' instead
	of 'char' as the type of the second parameter.

From-SVN: r264525

2018-09-24  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/63155
	* tree-ssa-propagate.c (add_ssa_edge): Avoid adding PHIs to
	the worklist when the edge of the respective argument isn't
	executable.

From-SVN: r264523

From-SVN: r264522

2018-09-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/87397
	* gfc_conv_procedure_call: Do not add clobber on INTENT(OUT)
	for variables having the dimension attribute.

2018-09-23  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/87395
	* gfortran.dg/intent_out_11.f90: New test.

From-SVN: r264518

	* config/i386/i386.h (enum reg_class): Rename MASK_REGS to
	ALL_MASK_REGS and MASK_EVEX_REGS to MASK_REGS.
	(MASK_CLASS_P): Update for rename.
	(MAYBE_MASK_CLASS_P): Ditto.
	(REG_CLASS_NAMES): Update.
	(REG_CLASS_CONTENT): Update.
	* config/i386/i386.c (regclass_map): Update for MASK_REG
	and ALL_MASK_REGS rename.
	* config/i386/constraints.md (Yk): Update for rename.
	(k): Ditto.

	* config/i386/i386.h (enum reg_class): Remove
	EVEX_SSE_REGS and MOD4_SSE_REGS.
	(REG_CLASS_NAMES): Update.
	(REG_CLASS_CONTENT): Update.
	* config/i386/i386.c (regclass_map): Declare AVX-512 SSE
	registers as ALL_SSE_REGS.
	(ix86_additional_allocno_class_p): Remove.
	(TARGET_ADDITIONAL_ALLOCNO_CLASS_P): Remove.
	(ix86_register_priority): Lower priority of EVEX SSE registers.
	Use IN_RANGE macro where appropriate.
	(ix86_hard_regno_mode_ok): Merge AVX-5124FMAPS and
	AVX-5124VNNIW checks.
	(ix86_modes_tieable_p): Tie 512-bit SSE modes.
	* config/i386/sse.md (avx5124fmaddps_4fmaddps)
	(avx5124fmaddps_4fmaddps_mask, avx5124fmaddps_4fmaddps_maskz)
	(avx5124fmaddps_4fmaddss, avx5124fmaddps_4fmaddss_mask)
	(avx5124fmaddps_4fmaddss_maskz, avx5124fmaddps_4fnmaddps)
	(avx5124fmaddps_4fnmaddps_mask, avx5124fmaddps_4fnmaddps_maskz)
	(avx5124fmaddps_4fnmaddss, avx5124fmaddps_4fnmaddss_mask)
	(avx5124fmaddps_4fnmaddss_maskz, avx5124vnniw_vp4dpwssd)
	(avx5124vnniw_vp4dpwssd_mask, avx5124vnniw_vp4dpwssd_maskz)
	(avx5124vnniw_vp4dpwssds, avx5124vnniw_vp4dpwssds_mask)
	(avx5124vnniw_vp4dpwssds_maskz): Use "v" instead of "Yh" constraint.
	* config/i386/constraints.md (Yh): Remove.

	* config/i386/i386.c (regclass_map): Declare integer REX registers
        as GENERAL_REGS.

From-SVN: r264516