Enable building libgomp with Intel CET

libgomp/
* configure.ac: Set CET_FLAGS, update XCFLAGS and FCFLAGS.
* acinclude.m4: Add cet.m4.
* configure: Regenerate.
* Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.

From-SVN: r254894

Enable building libatomic with Intel CET

libatomic/
* configure.ac: Set CET_FLAGS, update XCFLAGS.
* acinclude.m4: Add cet.m4 and enable.m4.
* configure: Regenerate.
* Makefile.in: Likewise.
* testsuite/Makefile.in: Likewise.

From-SVN: r254893

Enable building libbacktrace with Intel CET

libbacktrace/
* configure.ac: Add CET_FLAGS to EXTRA_FLAGS.
* aclocal.m4: Regenerate.
* Makefile.in: Likewise.
* configure: Likewise.

From-SVN: r254892

Use rcrt1.o%s/grcrt1.o%s to relocate static PIE

crt1.o is used to create dynamic and non-PIE static executables.  Static
PIE needs to link with rcrt1.o, instead of crt1.o, which is also used by
musl libc and OpenBSD:

https://gcc.gnu.org/ml/gcc/2015-06/msg00008.html

to relocate static PIE at run-time.  When -pg is used with -static-pie,
grcrt1.o should be used.

* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Use
rcrt1.o%s/grcrt1.o%s for -static-pie.

From-SVN: r254890

i386.c (ix86_multiplication_cost, [...]): Break out from ...

* i386.c (ix86_multiplication_cost, ix86_division_cost,
ix86_shift_rotate_cost): Break out from ...
(ix86_rtx_costs): ... here.
(ix86_add_stmt_cost): Use rtx cost machinery to compute cost of
vector operations.

* gcc.target/i386/xop-imul64-vector.c: Disable vectorizer costmodel.

From-SVN: r254889

predict.c (determine_unlikely_bbs): Set cgraph node count to 0 when entry block was promoted unlikely.

* predict.c (determine_unlikely_bbs): Set cgraph node count to 0
when entry block was promoted unlikely.
(estimate_bb_frequencies): Increase frequency scale.
* profile-count.h (profile_count): Export precision info.
* gcc.dg/tree-ssa/dump-2.c: Fixup template for profile precision
changes.
* gcc.dg/tree-ssa/pr77445-2.c: Fixup template for profile precision
changes.

From-SVN: r254888

tree-tailcall.c (eliminate_tail_call): Be more careful about not disturbin profile of entry block.

* tree-tailcall.c (eliminate_tail_call): Be more careful about not
disturbin profile of entry block.

From-SVN: r254887

ipa-fnsummary.c (estimate_node_size_and_time): Be more tolerant for roundoff errors.

* ipa-fnsummary.c (estimate_node_size_and_time): Be more tolerant for
roundoff errors.

From-SVN: r254886

ipa-cp.c (update_profiling_info): Handle conversion to local profile.

* ipa-cp.c (update_profiling_info): Handle conversion to local
profile.
* tree-cfg.c (execute_fixup_cfg): Do fixup same way as inliner does.

From-SVN: r254885

gimple-ssa-evrp.c (class evrp_range_analyzer): New class extracted from evrp_dom_walker class.

* gimple-ssa-evrp.c (class evrp_range_analyzer): New class extracted
from evrp_dom_walker class.  Various methods moved into new class.
(evrp_range_analyzer::evrp_range_analyzer): Constructor for new class.
(evrp_range_analyzer::enter): New method.
(evrp_range_analyzer::leave): New method.
(evrp_dom_walker): Remove delegators no longer needed by this class.
Replace vr_values data member with evrp_range_analyzer

From-SVN: r254884

gimple-ssa-evrp.c (evrp_dom_walker::record_ranges_from_phis): New method extracted from evrp_dom_walker::before_dom_children.

* gimple-ssa-evrp.c (evrp_dom_walker::record_ranges_from_phis): New
method extracted from evrp_dom_walker::before_dom_children.
(evrp_dom_walker::record_ranges_from_stmt): Likewise.
(evrp_dom_walker::record_ranges_from_incoming_edge): Likewise.

From-SVN: r254883

gimple-ssa-evrp.c (evrp_dom_walker): Add cleanup method.

* gimple-ssa-evrp.c (evrp_dom_walker): Add cleanup method.
Add private copy constructor and move assignment operators.
Privatize methods and class data where trivially possible.
(evrp_dom_walker::cleanup): New function, extracted from
execute_early_vrp.  Simplify access to class data.

From-SVN: r254882

[PR c++/82836] Fixe testcase

https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01515.html
* g++.dg/pr82836.C: Fix for c++17.

From-SVN: r254881

vr-values.h (get_output_for_vrp): Prototype.

* vr-values.h (get_output_for_vrp): Prototype.
* vr-values.c (get_output_for_vrp): New function extracted from
vrp_visit_assignment_or_call and extract_range_from_stmt.
(vrp_visit_assignment_or_call): Use get_output_for_vrp.  Simplify.

From-SVN: r254880

[AArch64] Adjust tuning parameters for Falkor

Disabling software prefetching and switching the autoprefetcher to weak improves
CPU2017 rate and speed benchmarks for both int and fp sets on Falkor.

SPECrate 2017 fp is up 0.38%
SPECspeed 2017 fp is up 0.54%
SPECrate 2017 int is up 3.02%
SPECspeed 2017 int is up 3.16%

There are only a couple individual regressions. The biggest one being about 4%
in parest.

For SPEC2006, we've noticed the following:

SPECint is up 0.91%
SPECfp is stable

In the case of SPEC2006 we noticed both a big regression in mcf (about 20%)
and a big improvement for hmmer (about 40%).

Since the overall result is positive, we would like to make these new tuning
settings the default for Falkor.

We may revisit the software prefetcher setting in the future, in case we
can adjust it enough so it provides us a good balance between improvements and
regressions (mcf). But for now it is best if it stays off.

2017-11-17  Luis Machado  <luis.machado@linaro.org>

gcc/
* config/aarch64/aarch64.c
(qdf24xx_prefetch_tune) <default_opt_level>: Set to -1.
(qdf24xx_tunings) <autoprefetcher_model>: Set to
tune_params::AUTOPREFETCHER_WEAK.

From-SVN: r254879

re PR target/82641 (Unable to enable crc32 for a certain function with target attribute on ARM (aarch32))

2017-11-17  Tamar Christina  <tamar.christina@arm.com>

PR target/82641
* config/arm/arm.c (arm_valid_target_attribute_rec):
Parse "arch=" and "+<ext>".
(arm_valid_target_attribute_tree): Re-init global options.
(arm_option_override): Make non-static.
(arm_options_perform_arch_sanity_checks): Make errors fatal.
* gcc/config/arm/arm-c.c (__ARM_FEATURE_CMSE): Support undef.
(__ARM_FEATURE_CRC32): Support undef.
* config/arm/arm_acle.h (__ARM_FEATURE_CRC32): Replace with pragma.
* doc/extend.texi (ARM Function Attributes): Add pragma and target.

gcc/testsuite/
2017-11-17  Tamar Christina  <tamar.christina@arm.com>

PR target/82641
* gcc.target/arm/pragma_arch_attribute.c: New.

From-SVN: r254878

gdbinit.in: add "break-on-diagnostic" command

gcc/ChangeLog:
* gdbinit.in (break-on-diagnostic): New command.

From-SVN: r254877

Add Intel CET support for EH in libgcc.

Control-flow Enforcement Technology (CET), published by Intel,
introduces the Shadow Stack feature, which ensures a return from a
function is done to exactly the same location from where the function
was called. When EH is present the control-flow transfer may skip some
stack frames and the shadow stack has to be adjusted not to signal a
violation of a control-flow transfer. It's done by counting a number
of skiping frames and adjasting shadow stack pointer by this number.

Having new semantic of the 'ret' instruction if CET is supported in HW
the 'ret' instruction cannot be generated in ix86_expand_epilogue when
we are returning after EH is processed. Added a code in
ix86_expand_epilogue to adjust Shadow Stack pointer and to generate an
indirect jump instead of 'ret'. As sp register is used during this
adjustment thus the argument in pro_epilogue_adjust_stack is changed
to update cfa_reg based on whether control-flow instrumentation is set.
Without updating the cfa_reg field there is an assert later in dwarf2
pass related to mismatch the stack register and cfa_reg value.

gcc/
* config/i386/i386.c (ix86_expand_epilogue): Change simple
return to indirect jump for EH return if control-flow protection
is enabled. Change explicit 'false' argument in
pro_epilogue_adjust_stack with a value of flag_cf_protection.
* config/i386/i386.md (simple_return_indirect_internal): Remove
SImode restriction to support 64-bit.

libgcc/
* config/i386/linux-unwind.h: Include
config/i386/shadow-stack-unwind.h.
* config/i386/shadow-stack-unwind.h: New file.
* unwind-dw2.c: (uw_install_context): Add a frame parameter and
pass it to _Unwind_Frames_Extra.
* unwind-generic.h (_Unwind_Frames_Extra): New.
* unwind.inc (_Unwind_RaiseException_Phase2): Add frames_p
parameter. Add local variable frames to count number of frames.
(_Unwind_ForcedUnwind_Phase2): Likewise.
(_Unwind_RaiseException): Add local variable frames to count
number of frames, pass it to _Unwind_RaiseException_Phase2 and
uw_install_context.
(_Unwind_ForcedUnwind): Likewise.
(_Unwind_Resume): Likewise.
(_Unwind_Resume_or_Rethrow): Likewise.

From-SVN: r254876

combine: Add added_notes_insn

This patch makes combine reconsider insns it added notes to.  This
matters for example if the note is a REG_DEAD; without the note the
setter of the register has to be kept around in the result of
combinations, so it cannot be a 2->1 combination, and the cost of
the result is higher than without that extra set, so try_combine may
refuse the combination with the set, but allow it without the set.

This fixes a regression for powerpc: pr69946.c has started to fail
after the bitfield expansion changes.  GCC used to generate

        lwz 3,0(9)
        rlwinm 3,3,12,20,23
        ori 3,3,0x11
        rotldi 3,3,52
        bl bar

but now it does

        lwz 3,0(9)
        rldicr 3,3,32,3
        srdi 3,3,48
        ori 3,3,0x110
        sldi 3,3,48
        bl bar

(an instruction too many).  After this patch it is

        lwz 3,0(9)
        rlwinm 3,3,16,16,19
        ori 3,3,0x110
        sldi 3,3,48
        bl bar

(the testcase still does not pass, it looks for very specific insns).

* combine.c (added_notes_insn): New.
(try_combine): Handle added_notes_insn like added_links_insn.
Rewrite return value code.
(distribute_notes): Set added_notes_insn to the earliest insn we added
a note to.

From-SVN: r254875

combine: Don't split insns if half is unused (PR82621)

If we have a PARALLEL of two SETs, and one half is unused, we currently
happily split that into two instructions (although the unused one is
useless).  Worse, as PR82621 shows, combine will happily merge this
insn into I3 even if some intervening insn sets the same register
again, which is wrong.

This fixes it by not splitting PARALLELs with REG_UNUSED notes.  It
all is handled fine by combine in that case: just the "single set
that is unused" case isn't handled properly.

This also results in better code: combine will now actually throw
away the unused SET.  (It still won't do that in an I3).

PR rtl-optimization/82621
* combine.c (try_combine): Do not split PARALLELs of two SETs if the
dest of one of those SETs is unused.

From-SVN: r254874

rs6000: Fix for altivec-macros.c

This fixes the altivec-macros.c testcase; we now need to explicitly
say "no column number" for messages without one.

gcc/testsuite/
* gcc.target/powerpc/altivec-macros.c: Include "-:" in the messages
matched for.

From-SVN: r254873

* g++.dg/pr82836.C: Add -Wno-return-type.

From-SVN: r254872

PR libstdc++/83025 fix constraints for path overloads in <fstream>

PR libstdc++/83025
* include/std/fstream (basic_filebuf::_If_path): Move to
namespace-scope and rename to _If_fs_path.
(basic_filebuf::open): Use new name.
(basic_ifstream(_Path, ios::openmode))
(basic_ifstream::open(_Path, ios::openmode))
(basic_ofstream(_Path, ios::openmode))
(basic_ofstream::open(_Path, ios::openmode))
(basic_fstream(_Path, ios::openmode))
(basic_fstream::open(_Path, ios::openmode)): Use _If_fs_path.
* testsuite/27_io/basic_filebuf/open/char/path.cc: Test with filename
as non-const char*.
* testsuite/27_io/basic_fstream/cons/char/path.cc: Likewise.
* testsuite/27_io/basic_fstream/open/char/path.cc: Likewise.
* testsuite/27_io/basic_ifstream/cons/char/path.cc: Likewise.
* testsuite/27_io/basic_ifstream/open/char/path.cc: Likewise.
* testsuite/27_io/basic_ofstream/cons/char/path.cc: Likewise.
* testsuite/27_io/basic_ofstream/open/char/path.cc: Likewise.

From-SVN: r254871

[BRIGFE] Fix sprintf format string type mismatch on 32b machines.

From-SVN: r254870

re PR fortran/83017 (DO CONCURRENT not parallelizing)

2017-11-17  Richard Biener  <rguenther@suse.de>

PR fortran/83017
* tree-core.h (enum annot_expr_kind): Add annot_expr_parallel_kind.
* tree-pretty-print.c (dump_generic_node): Handle
annot_expr_parallel_kind.
* tree-cfg.c (replace_loop_annotate_in_block): Likewise.
* gimplify.c (gimple_boolify): Likewise.

fortran/
* trans-stmt.c (gfc_trans_forall_loop): Annotate DO CONCURRENT
loops with annot_expr_parallel_kind instead of just
annot_expr_ivdep_kind.

From-SVN: r254869

Enable building libgcc with CET options.

Enable building libgcc with CET options by default on Linux/x86 if
binutils supports CET v2.0.  It can be disabled with --disable-cet.
It is an error to configure GCC with --enable-cet if bintuiils
doesn't support CET v2.0.

ENDBR instruction is added to __morestack_large_model since it is
called indirectly.

2017-11-17  Igor Tsimbalist  <igor.v.tsimbalist@intel.com>

config/
* cet.m4: New file.

gcc/
* config.gcc (extra_headers): Add cet.h for x86 targets.
* config/i386/cet.h: New file.
* doc/install.texi: Add --enable-cet/--disable-cet.

libgcc/
* Makefile.in (configure_deps): Add $(srcdir)/../config/cet.m4.
(CET_FLAGS): New.
* config/i386/morestack.S: Include <cet.h>.
(__morestack_large_model): Add _CET_ENDBR at function entrance.
* config/i386/resms64.h: Include <cet.h>.
* config/i386/resms64f.h: Likewise.
* config/i386/resms64fx.h: Likewise.
* config/i386/resms64x.h: Likewise.
* config/i386/savms64.h: Likewise.
* config/i386/savms64f.h: Likewise.
* config/i386/t-linux (HOST_LIBGCC2_CFLAGS): Add $(CET_FLAGS).
(CRTSTUFF_T_CFLAGS): Likewise.
* configure.ac: Include ../config/cet.m4.
Set and substitute CET_FLAGS.
* configure: Regenerated.

From-SVN: r254868

re PR fortran/83017 (DO CONCURRENT not parallelizing)

2017-11-17  Richard Biener  <rguenther@suse.de>

PR tree-optimization/83017
* tree-parloops.c (MIN_PER_THREAD): Use --param parloops-min-per-thread.
(gen_parallel_loop): Properly count iterations.
(parallelize_loops): Handle loop->can_be_parallel independent
of flag_loop_parallelize_all.  Make static profitability test match
the runtime one.
* params.def (PARAM_PARLOOPS_MIN_PER_THREAD): New.
* invoke.texi (parloops-min-per-thread): Document.

* gcc.dg/autopar/pr49960.c: Adjust.

From-SVN: r254867

[ARC] Update GLIBC_DYNAMIC_LINKER

Update GLIBC_DYNAMIC_LINKER per glibc upstreaming review comments:
http://lists.infradead.org/pipermail/linux-snps-arc/2017-June/002634.html

gcc/
* config/arc/linux.h: GLIBC_DYNAMIC_LINKER update per glibc
upstreaming review comments

From-SVN: r254866

[ARM] Fix test armv8_2-fp16-move-1.c

2017-11-17  Sudakshina Das  <sudi.das@arm.com>

* gcc.target/arm/armv8_2-fp16-move-1.c: Edit vmov scan-assembler
directives.

From-SVN: r254863

expr.c (copy_blkmode_to_reg): Fix bitsize for targets with fast unaligned access.

2017-11-17  Tamar Christina  <tamar.christina@arm.com>

* expr.c (copy_blkmode_to_reg): Fix bitsize for targets
with fast unaligned access.
* doc/sourcebuild.texi (word_mode_no_slow_unalign): New.

gcc/testsuite/
2017-11-17  Tamar Christina  <tamar.christina@arm.com>

* gcc.dg/struct-simple.c: New.
* lib/target-supports.exp
(check_effective_target_word_mode_no_slow_unalign): New.

From-SVN: r254862

[ARM] Rework expectation for call to Armv8-M nonsecure function

Testcase gcc.target/arm/cmse/cmse-14.c checks whether bar is called via
__gnu_cmse_nonsecure_call libcall and not via a direct call. However the
pattern is a bit surprising in that it needs to explicitely allow "by"
due to allowing anything before the 'b'.

This patch rewrites the logic to look for b as a first non-whitespace
letter followed iby anything (to match bl and conditional branches)
followed by some spaces and then bar.

2017-11-17  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    * gcc.target/arm/cmse/cmse-14.c: Change logic to match branch
    instruction to bar.

From-SVN: r254861

[ARM] Fix selection of effective target for cmse tests

Some of the tests in the gcc.target/arm/cmse directory (eg.
gcc.target/arm/cmse/mainline/bitfield-4.c) are failing when run without
an architecture specified in RUNTESTFLAGS due to them not adding the
option to select an Armv8-M architecture.

This patch fixes the issue by adding the right option from the exp file
so that no architecture fiddling is necessary in the individual tests.

2017-11-17  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/testsuite/
    * gcc.target/arm/cmse/cmse.exp: Add option to select Armv8-M Baseline
    or Armv8-M Mainline when running the respective tests.
    * gcc.target/arm/cmse/baseline/cmse-11.c: Remove architecture check and
    selection.
    * gcc.target/arm/cmse/baseline/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/baseline/cmse-2.c: Likewise.
    * gcc.target/arm/cmse/baseline/cmse-6.c: Likewise.
    * gcc.target/arm/cmse/baseline/softfp.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-5.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard-sp/cmse-8.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-5.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/hard/cmse-8.c: Likewise.
    * gcc.target/arm/cmse/mainline/soft/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/mainline/soft/cmse-5.c: Likewise.
    * gcc.target/arm/cmse/mainline/soft/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/soft/cmse-8.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp-sp/cmse-5.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp-sp/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp-sp/cmse-8.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp/cmse-13.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp/cmse-5.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp/cmse-7.c: Likewise.
    * gcc.target/arm/cmse/mainline/softfp/cmse-8.c: Likewise.

From-SVN: r254860

[ARM] Fix ICE in Armv8-M Security Extensions code

Commit r253825 which introduced some sanity checks for sbitmap revealed
a bug in the conversion of cmse_nonsecure_entry_clear_before_return ()
to using bitmap structure. bitmap_and expects that the two bitmaps have
the same length, yet the code in
cmse_nonsecure_entry_clear_before_return () have different size for
to_clear_bitmap and to_clear_arg_regs_bitmap, with the assumption that
bitmap_and would behave has if the bits not allocated were in fact zero.
This commit makes sure both bitmap are equally sized.

2017-11-17  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    * config/arm/arm.c (cmse_nonsecure_entry_clear_before_return): Allocate
    to_clear_arg_regs_bitmap to the same size as to_clear_bitmap.

From-SVN: r254859

tree-ssa-pre.c (phi_translate_1): Remove redundant constant folding of references.

2017-11-17  Richard Biener  <rguenther@suse.de>

* tree-ssa-pre.c (phi_translate_1): Remove redundant constant
folding of references.

From-SVN: r254858

re PR testsuite/82997 (gcc.dg/cpp/sysmac1.c and gcc.dg/cpp/macsyntx.c fail starting with r254707)

PR testsuite/82997
* gcc.dg/cpp/macsyntx.c (var1, rest): Don't expect
"requires at least one" warning.
* gcc.dg/cpp/sysmac1.c (foo): Likewise.
* gcc.dg/cpp/macsyntx2.c: New test.
* gcc.dg/cpp/sysmac3.c: New test.
* gcc.dg/cpp/sysmac3.h: New file.

From-SVN: r254857

re PR middle-end/78809 (Inline strcmp with small constant strings)

2017-11-15  Qing Zhao <qing.zhao@oracle.com>

PR middle-end/78809
* gimple-fold.c (gimple_fold_builtin_string_compare): Add handling
of replacing call to strncmp with corresponding call to strcmp when
meeting conditions.

PR middle-end/78809
* gcc.dg/strcmpopt_1.c: New test.

From-SVN: r254856

Enable option -mprefer-avx256 as default for Intel Skylake configuration

gcc/
* config/i386/x86-tune.def (X86_TUNE_AVX256_OPTIMAL): Add tuning
option prefer-avx256 for skylake-avx512 configuration.
* config/i386/i386.c (ix86_option_override_internal): Ditto.
(get_builtin_code_for_version): Ditto.

From-SVN: r254855

[NDS32] Reserve more register numbers for new registers in the future.

gcc/
* config/nds32/nds32.h (FIRST_PSEUDO_REGISTER): Modify.
(FIXED_REGISTERS): Reserve more register numbers.
(CALL_USED_REGISTERS): Likewise.
(REG_ALLOC_ORDER): Likewise.
(REG_CLASS_CONTENTS): Likewise.
(REGISTER_NAMES): Likewise.

Co-Authored-By: Monk Chiang <sh.chiang04@gmail.com>
From-SVN: r254854

Add nds32 vector modes.

gcc/
* config/nds32/nds32-modes.def: Add vector mode V4QI V2HI V8QI V4HI
V2SI.
* config/nds32/iterators.md: Add vector mode iterators and attributes.

Co-Authored-By: Kito Cheng <kito.cheng@gmail.com>
From-SVN: r254853

Daily bump.

From-SVN: r254852

Tweak vector::_M_realloc_insert for code size

2017-11-17  Marc Glisse  <marc.glisse@inria.fr>

* include/bits/vector.tcc (vector::_M_realloc_insert): Cache old
values before the allocation.

From-SVN: r254849

Had a small thinko in the implementation of mmintrin.h _mm_add_pi32 that only shows when compiling for power9.

Had a small thinko in the implementation of mmintrin.h _mm_add_pi32 that only shows
when compiling for power9. A trivial and obvious 2 line patch to fix it.

From-SVN: r254848

Add -std=c18 etc. option aliases.

ISO C17 won't go to ballot until December, meaning publication of the
standard won't be until 2018, leaving ambiguity as to whether people
will end up referring to the standard as C17, as it's currently known
and which corresponds to the __STDC_VERSION__ value, or C18 based on
the publication date.

In case people end up referring to this standard as C18, this patch
adds corresponding option aliases -std=c18, -std=iso9899:2018,
-std=gnu18 so people can use those names based on publication date if
they wish.  The "expected to be" explanations in help texts and the
manual can be removed as and when the standard is published, hopefully
before GCC 8 is out.

Bootstrapped with no regressions on x86_64-pc-linux-gnu.

gcc:
* doc/invoke.texi (-std=c17): Refer to 2018 expected publication
date of C17.
(-std=c18, -std=iso9899:2018, -std=gnu18): Document option
aliases.

gcc/c-family:
* c.opt (-std=c17, std=gnu17, -std=iso9899:2017): Refer to 2018
expected publication date of C17.
(-std=c18, -std=gnu18, -std=iso9899:2018): New option aliases.

gcc/testsuite:
* gcc.dg/c18-version-1.c, gcc.dg/c18-version-2.c: New tests.

From-SVN: r254847

re PR bootstrap/82856 (--enable-maintainter-mode broken by incompatiblity of gcc's required automake and modern Perl)

2017-11-16  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR bootstrap/82856
* doc/install.texi: Document incompatibility of Perl >=5.6.26
with the required version of automake 1.11.6.

From-SVN: r254845

power9.md (power9fpdiv): New automaton and cpu_unit defined for it.

* rs6000/power9.md (power9fpdiv): New automaton and cpu_unit defined
for it.
(DU_C2_3_power9): Correct reservation combinations.
(FP_DIV_power9, VEC_DIV_power9): New.
(power9-alu): Split out rotate/shift...
(power9-rot): ...to here, correct dispatch resource.
(power9-cracked-alu, power9-mul, power9-mul-compare): Correct dispatch
resource.
(power9-fp): Correct latency.
(power9-sdiv): Add div/sqrt resource.
(power9-ddiv): Correct latency, add div/sqrt resource.
(power9-sqrt, power9-dsqrt): Add div/sqrt resource.
(power9-vecfdiv, power9-vecdiv): Correct latency, add div/sqrt
resource.
(power9-qpdiv, power9-qpmul): Adjust resource usage.

From-SVN: r254844

PR c++/79092 - non-type args of different types are different

* tree.c (cp_tree_equal): Check the type of constants.
* pt.c (unify) [TEMPLATE_PARM_INDEX]: Handle UNIFY_ALLOW_INTEGER
when comparing to previously deduced argument.
(maybe_convert_nontype_argument): New.
(convert_nontype_argument): Call it.
(tsubst_copy_and_build): Handle partial instantiation of
IMPLICIT_CONV_EXPR.
(unify): Ignore type when deducing from array bound.
(dependent_type_p_r): Handle DEFERRED_NOEXCEPT.
(value_dependent_expression_p): Any type-dependent expression is
value-dependent.  Handle IMPLICIT_CONV_EXPR.
* cp-tree.h (IMPLICIT_CONV_EXPR_NONTYPE_ARG): New.
* mangle.c (write_template_arg): Strip IMPLICIT_CONV_EXPR.

From-SVN: r254843

rs6000.c (rs6000_expand_builtin): Do not do the switch statement mapping KF built-ins to TF built-ins if...

[gcc]
2017-11-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

* config/rs6000/rs6000.c (rs6000_expand_builtin): Do not do the
switch statement mapping KF built-ins to TF built-ins if we don't
have the proper ISA 3.0 assembler support.

[gcc/testsuite]
2017-11-15  Michael Meissner  <meissner@linux.vnet.ibm.com>

* gcc.target/powerpc/bfp/bfp.exp: Look for *.c files, not *.c*
files to prevent ~ files from getting recognized.
* gcc.target/powerpc/dfp/dfp.exp: Likewise.
* gcc.target/powerpc/vsu/vsu.exp: Likewise.

From-SVN: r254839

Makefile.am: Remove references to c-compiler-name.h and cp-compiler-name.h

* Makefile.am: Remove references to c-compiler-name.h and
cp-compiler-name.h
* Makefile.in: Regenerate.
* compiler-name.hh: New file.
* libcc1.cc: Don't include c-compiler-name.h.  Include
compiler-name.hh.
* libcp1.cc: Don't include cp-compiler-name.h.  Include
compiler-name.hh.

Co-Authored-By: Pedro Alves <palves@redhat.com>
From-SVN: r254838

[BRIGFE] Reduce the number of type conversions due to
the untyped HSAIL regs.

Instead of always representing the HSAIL's untyped registers as
unsigned int, the gccbrig now pre-analyzes the BRIG code and
builds the register variables as a type used the most when storing
or reading data to/from each register. This reduces the total
conversions which cannot be always optimized away.

From-SVN: r254837

tree-emutls.c (lower_emutls_data): Remove unused bb_freq.

* tree-emutls.c (lower_emutls_data): Remove unused bb_freq.
(lower_emutls_function_body): Do not compute it.

From-SVN: r254836

ipa-split.c (split_bb_info): Turn time to sreal.

* ipa-split.c (split_bb_info): Turn time to sreal.
(split_point): Likewise.
(dump_split_point): Likewise.
(fine_split_points): Likewise.
(execute_split_functions): Only zero split_bbs; turn time to sreals.

From-SVN: r254835

ipa-fnsummary.c (analyze_function_body): Accumulate time consistently in sreal.

* ipa-fnsummary.c (analyze_function_body): Accumulate time consistently
in sreal.
* gcc.dg/ipa/ipcp-2.c: Lower threshold.

From-SVN: r254834

PR middle-end/63477 - Bogus warning with -O3 -Warray-bounds: array subscript

PR middle-end/63477 - Bogus warning with -O3 -Warray-bounds: array subscript
is above array bounds

gcc/testsuite/ChangeLog:

PR middle-end/63477
* gcc.dg/pr63477.c: New test.

From-SVN: r254833

predict.c (combine_predictions_for_bb): Preserve zero predicted eges.

* predict.c (combine_predictions_for_bb): Preserve zero predicted
eges.
(expensive_function_p): Remove useless assert.
(determine_unlikely_bbs): Propagate also forward; determine cold blocks

From-SVN: r254832

Remove wrong ChangeLog entry

From-SVN: r254831

PR tree-optimization/82588 - missing -Warray-bounds on a excessively large index

PR tree-optimization/82588 - missing -Warray-bounds on a excessively large index
PR tree-optimization/82583 - missing -Warray-bounds on out-of-bounds inner indic

gcc/ChangeLog:

PR tree-optimization/82588
PR tree-optimization/82583
* tree-vrp.c (check_array_ref): Handle flexible array members,
string literals, and inner indices.
(search_for_addr_array): Add detail to diagnostics.

gcc/testsuite/ChangeLog:

PR tree-optimization/82588
PR tree-optimization/82583
* c-c++-common/Warray-bounds.c: New test.
* gcc.dg/Warray-bounds-11.c: Adjust.
* gcc.dg/Warray-bounds-22.c: New test.

From-SVN: r254830

Makefile.in: Merge Aarch64 and ARM "ifeq" blocks.

2017-11-16  Doug Rupp  <rupp@adacore.com>

* gcc-interface/Makefile.in: Merge Aarch64 and ARM "ifeq" blocks.

From-SVN: r254829

[multiple changes]

2017-11-16  Steve Baird  <baird@adacore.com>

* debug.adb: Update another comment to indicate gnat2scil's use of the
-gnatd.7 switch.

2017-11-16  Bob Duff  <duff@adacore.com>

* exp_ch6.adb (Expand_Call_Helper): Avoid creating a transient scope in
the case of nested build-in-place calls.

From-SVN: r254827

[multiple changes]

2017-11-16  Joel Brobecker  <brobecker@adacore.com>

* doc/gnat_ugn/gnat_utility_programs.rst: Document the switches
available in gnatsymbolize.

2017-11-16  Steve Baird  <baird@adacore.com>

* debug.adb: Update comment to indicate gnat2scil's use of the -gnatd.7
switch.

From-SVN: r254826

[multiple changes]

2017-11-16  Gary Dismukes  <dismukes@adacore.com>

* doc/gnat_ugn/elaboration_order_handling_in_gnat.rst, sem_ch6.adb,
sem_elab.adb: Minor editorial corrections.
* gnat_ugn.texi: Regenerate.

2017-11-16  Joel Brobecker  <brobecker@adacore.com>

* doc/gnat_ugn/gnat_utility_programs.rst (GNAT UGN): Add
gnatsymbolize documentation.
* gnat_ugn.texi: Regenerate.

2017-11-16  Steve Baird  <baird@adacore.com>

* sem_ch3.adb (Build_Derived_Record_Type): Replace all uses of
"Scope (Parent_Type)" with "Scope (Parent_Base)".

From-SVN: r254825

[PATCH] New lang hook

https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01340.html
PR c++/82836
PR c++/82737
* tree.h (COPY_DECL_RTL): Rename parms for clarity.
(SET_DECL_ASSEMBLER_NAME): Forward to
overwrite_decl_assembler_name.
(COPY_DECL_ASSEMBLER_NAME): Rename parms for clarity.
(overwrite_decl_assembler_name): Declare.
* tree.c (overwrite_decl_assembler_name): New.
* langhooks-def.h (lhd_overwrite_decl_assembler_name): Declare.
(LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME): Provide default.
(LANG_HOOKS_INITIALIZER): Add it.
* langhooks.h (struct lang_hooks): Add overwrite_decl_assembler_name.
* langhooks.c (lhd_set_decl_assembler_name): Use
SET_DECL_ASSEMBLER_NAME.
(lhd_overwrite_decl_assembler_name): Default implementation.

PR c++/82836
PR c++/82737
* cp-objcp-common.h (LANG_HOOKS_OVERWRITE_DECL_ASSEMBLER_NAME):
Override.
* cp-tree.h (overwrite_mangling): Declare.
* decl2.c (struct mangled_decl_hash): Entries are deletable.
(overwrite_mangling): New.

PR c++/82836
PR c++/82737
* g++.dg/pr82836.C: New.

From-SVN: r254823

Add noexcept to std::shared_future copy operations (LWG DR 2799)

* include/std/future (shared_future): Add noexcept to copy constructor
and copy-assignment operator (LWG 2799).

From-SVN: r254821

[BRIG] added documentation in gccbrig.texi

From-SVN: r254820

opt.ads: Elaboration warnings are now on by default.

2017-11-16  Hristian Kirtchev  <kirtchev@adacore.com>

* opt.ads: Elaboration warnings are now on by default. Add a comment
explaining why this is needed.
* sem_ch9.adb (Analyze_Requeue): Preserve the status of elaboration
warnings.
* sem_ch12.adb (Analyze_Package_Instantiation): Preserve the status of
elaboration warnings.
(Analyze_Subprogram_Instantiation): Preserve the status of elaboration
warnings.
* sem_elab.adb: Update the structure of Call_Attributes and
Instantiation_Attributes.
(Build_Call_Marker): Propagate the status of elaboration warnings from
the call to the marker.
(Extract_Call_Attributes): Extract the status of elaboration warnings.
(Extract_Instantiation_Attributes): Extract the status of elaboration
warnings.
(Process_Conditional_ABE_Activation_Impl): Elaboration diagnostics are
now dependent on the status of elaboration warnings.
(Process_Conditional_ABE_Call_Ada): Elaboration diagnostics are now
dependent on the status of elaboration warnings.
(Process_Conditional_ABE_Instantiation_Ada): Elaboration diagnostics
are now dependent on the status of elaboration warnings.
(Process_Guaranteed_ABE_Activation_Impl): Remove pragma Unreferenced
for formal Call_Attrs. Elaboration diagnostics are now dependent on the
status of elaboration warnings.
(Process_Guaranteed_ABE_Call): Elaboration diagnostics are now
dependent on the status of elaboration warnings.
(Process_Guaranteed_ABE_Instantiation): Elaboration diagnostics are now
dependent on the status of elaboration warnings.
* sem_prag.adb (Analyze_Pragma): Remove the unjustified warning
concerning pragma Elaborate.
* sem_res.adb (Resolve_Call): Preserve the status of elaboration
warnings.
(Resolve_Entry_Call): Propagate flag Is_Elaboration_Warnings_OK_Node
from the procedure call to the entry call.
* sem_util.adb (Mark_Elaboration_Attributes): Add formal parameter
Warnings.
(Mark_Elaboration_Attributes_Node): Preserve the status of elaboration
warnings
* sem_util.ads (Mark_Elaboration_Attributes): Add formal parameter
Warnings. Update the comment on usage.
* sinfo.adb (Is_Dispatching_Call): Update to use Flag6.
(Is_Elaboration_Warnings_OK_Node): New routine.
(Set_Is_Dispatching_Call): Update to use Flag6.
(Set_Is_Elaboration_Warnings_OK_Node): New routine.
* sinfo.ads: Attribute Is_Dispatching_Call now uses Flag6. Add new
attribute Is_Elaboration_Warnings_OK_Node along with occurrences
in nodes.
(Is_Elaboration_Warnings_OK_Node): New routine along with pragma
Inline.
(Set_Is_Elaboration_Warnings_OK_Node): New routine along with pragma
Inline.
* doc/gnat_ugn/elaboration_order_handling_in_gnat.rst: Update various
sections to indicate how to suppress elaboration warnings.  Document
switches -gnatwl and -gnatwL.
* gnat_ugn.texi: Regenerate.

From-SVN: r254819

[multiple changes]

2017-11-16  Sylvain Dailler  <dailler@adacore.com>

* sem_util.adb (Get_Enum_Lit_From_Pos): Add a condition for Pos
lower than 0.

2017-11-16  Bob Duff  <duff@adacore.com>

* sem_ch13.adb (Check_Expr_Constants): Avoid error message in case of
System'To_Address.

From-SVN: r254818

[PR c++/81060] ICE with invalid initialzer via lambda

https://gcc.gnu.org/ml/gcc-patches/2017-11/msg01323.html
PR c++/81060
* decl.c (xref_tag_1): Push lambda into current scope.
* name-lookup.c (do_pushtag): Don't deal with ts_lambda here.

PR c++81060
* g++.dg/cpp0x/lambda/lambda-template13.C: Avoid undefined
template using local type error.
* g++.dg/cpp0x/pr81060.C: New.

From-SVN: r254817

Canonicalize constant multiplies in division

This patch implements some of the optimizations discussed in
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71026.

Canonicalize x / (C1 * y) into (x * C2) / y.

This moves constant multiplies out of the RHS of a division in order
to allow further simplifications (such as (C1 * x) / (C2 * y) ->
(C3 * x) / y) and to enable more reciprocal CSEs.

2017-11-16  Wilco Dijkstra  <wdijkstr@arm.com>
    Jackson Woodruff  <jackson.woodruff@arm.com>

    gcc/
PR tree-optimization/71026
* match.pd: Canonicalize constant multiplies in division.

    gcc/testsuite/
PR tree-optimization/71026
* gcc.dg/cse_recip.c: New test.

Co-Authored-By: Jackson Woodruff <jackson.woodruff@arm.com>
From-SVN: r254816

Set default to -fomit-frame-pointer

Almost all targets add an explict -fomit-frame-pointer in the target specific
options.  Rather than doing this in a target-specific way, do this in the
generic options so it works identically across all targets.  In many cases the
target no longer needs to define TARGET_OPTION_OPTIMIZATION_TABLE, reducing
the amount of target code.

    gcc/
* opts.c (default_options_table): Add OPT_fomit_frame_pointer entry.
* common/config/alpha/alpha-common.c (TARGET_OPTION_OPTIMIZATION_TABLE):
  Remove OPT_fomit_frame_pointer entry.
* common/config/arc/arc-common.c: Likewise.
* common/config/arm/arm-common.c: Likewise.
* common/config/avr/avr-common.c: Likewise.
* common/config/c6x/c6x-common.c: Likewise.
* common/config/cr16/cr16-common.c: Likewise.
* common/config/cris/cris-common.c: Likewise.
* common/config/epiphany/epiphany-common.c: Likewise.
* common/config/fr30/fr30-common.c: Likewise.
* common/config/frv/frv-common.c: Likewise.
* common/config/ia64/ia64-common.c: Likewise.
* common/config/iq2000/iq2000-common.c: Likewise.
* common/config/lm32/lm32-common.c: Likewise.
* common/config/m32r/m32r-common.c: Likewise.
* common/config/mcore/mcore-common.c: Likewise.
* common/config/microblaze/microblaze-common.c: Likewise.
* common/config/mips/mips-common.c: Likewise.
* common/config/mmix/mmix-common.c: Likewise.
* common/config/mn10300/mn10300-common.c: Likewise.
* common/config/nios2/nios2-common.c: Likewise.
* common/config/pa/pa-common.c: Likewise.
* common/config/pdp11/pdp11-common.c: Likewise.
* common/config/powerpcspe/powerpcspe-common.c: Likewise.
* common/config/riscv/riscv-common.c: Likewise.
* common/config/rs6000/rs6000-common.c: Likewise.
* common/config/rx/rx-common.c: Likewise.
* common/config/s390/s390-common.c: Likewise.
* common/config/sh/sh-common.c: Likewise.
* common/config/sparc/sparc-common.c: Likewise.
* common/config/tilegx/tilegx-common.c: Likewise.
* common/config/tilepro/tilepro-common.c: Likewise.
* common/config/v850/v850-common.c: Likewise.
* common/config/visium/visium-common.c: Likewise.
* common/config/xstormy16/xstormy16-common.c: Likewise.
* common/config/xtensa/xtensa-common.c: Likewise.

    doc/
* invoke.texi (-fomit-frame-pointer): Update documentation.

From-SVN: r254815

[AArch64] Fix frame tests

Improve the AArch64 frame tests - add -f(no-)omit-frame-pointer,
update checks and add missing tests.  As a result all tests now
pass.

    gcc/testsuite/
* gcc.target/aarch64/lr_free_2.c: Fix test.
* gcc.target/aarch64/spill_1.c: Likewise.
* gcc.target/aarch64/test_frame_11.c: Likewise.
* gcc.target/aarch64/test_frame_12.c: Likewise.
* gcc.target/aarch64/test_frame_13.c: Likewise.
* gcc.target/aarch64/test_frame_14.c: Likewise.
* gcc.target/aarch64/test_frame_15.c: Likewise.
* gcc.target/aarch64/test_frame_3.c: Likewise.
* gcc.target/aarch64/test_frame_5.c: Likewise.
* gcc.target/aarch64/test_frame_9.c: Likewise.

From-SVN: r254814

* tree-cfg.c (gimple_find_sub_bbs): Do not compute freq.

From-SVN: r254813

cfg.c (scale_bbs_frequencies_int, [...]): Remove.

* cfg.c (scale_bbs_frequencies_int,
cale_bbs_frequencies_gcov_type): Remove.
* cfg.h (scale_bbs_frequencies_int,
cale_bbs_frequencies_gcov_type): Remove.

From-SVN: r254812

* tree-ssa-loop-manip.c
(scale_dominated_blocks_in_loop): Update to profile counts.
(tree_transform_and_unroll_loop): Likewise.

From-SVN: r254811

tree-vect-loop-manip.c (vect_do_peeling): Do not use scale_bbs_frequencies_int.

* tree-vect-loop-manip.c (vect_do_peeling): Do not use
scale_bbs_frequencies_int.

From-SVN: r254810

* final.c (compute_alignments): Use counts rather than frequencies.

From-SVN: r254809

re PR c++/70383 (Bogus error when attempting to capture a reference to function by copy)

2017-11-16  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/70383
* g++.dg/cpp0x/lambda/lambda-70383.C: New.

From-SVN: r254808

cfgloopanal.c: Include sreal.h

* cfgloopanal.c: Include sreal.h
(average_num_loop_insns): Use counts and sreal for accounting.

From-SVN: r254807

cfgloopmanip.c (duplicate_loop_to_header_edge): Cleanup profile manipulation.

* cfgloopmanip.c (duplicate_loop_to_header_edge): Cleanup profile
manipulation.

From-SVN: r254806

[multiple changes]

2017-11-16  Yannick Moy  <moy@adacore.com>

* sem_elab.adb (Include): Fix mode of parameter Curr to out.

2017-11-16  Piotr Trojanek  <trojanek@adacore.com>

* sem_util.ads, sem_util.adb (Is_CCT_Instance): Allow calls where
Context_Id denotes a record type.

2017-11-16  Hristian Kirtchev  <kirtchev@adacore.com>

* sem_ch8.adb (Check_SPARK_Primitive_Operation): Enable the check in
instantiations.

2017-11-16  Doug Rupp  <rupp@adacore.com>

Initial gnat port to aarch64-wrs-vxworks7
* libgnarl/s-vxwork__aarch64.ads,
libgnat/system-vxworks7-aarch64-rtp-smp.ads,
libgnat/system-vxworks7-aarch64.ads: New files
* sigtramp-vxworks-target.inc (aarch64): New section.
* tracebak.c (USE_ARM_UNWINDING): Disable for ARMARCH8A.

From-SVN: r254805

[multiple changes]

2017-11-16  Hristian Kirtchev  <kirtchev@adacore.com>

* sem_elab.adb (Include): Including a node which is also a compilation
unit terminates the search because there are no more lists to examine.

2017-11-16  Hristian Kirtchev  <kirtchev@adacore.com>

* sem_ch8.adb (Analyze_Subprogram_Renaming): Ensure that a renaming
declaration does not define a primitive operation of a tagged type for
SPARK.
(Check_SPARK_Primitive_Operation): New routine.

2017-11-16  Arnaud Charlet  <charlet@adacore.com>

* libgnat/a-elchha.adb (Last_Chance_Handler): Display Argv (0) in
message when using -E binder switch.

2017-11-16  Piotr Trojanek  <trojanek@adacore.com>

* errout.ads: Fix minor typo in comment.

From-SVN: r254804

[multiple changes]

2017-11-16  Ed Schonberg  <schonberg@adacore.com>

* sem_ch3.adb (Process_Subtype): If the subtype indication does not
syntactically denote a type, return Any_Type to prevent subsequent
compiler crashes or infinite loops.

2017-11-16  Steve Baird  <baird@adacore.com>

* lib-writ.adb: Fix bug which causes Program_Error to be raised in some
cases when writing out a .ali file when a Rename_Pragma pragma is in
effect.
* lib-writ.adb (Write_Unit_Information): Replace call to
Pragma_Name_Unmapped with call to Pragma_Name.

2017-11-16  Gary Dismukes  <dismukes@adacore.com>

* sem_elab.adb: Minor typo fixes.

2017-11-16  Justin Squirek  <squirek@adacore.com>

* sem_res.adb (Resolve_Allocator): Correct warning messages and make
them more explicit.

From-SVN: r254803

[multiple changes]

2017-11-16  Hristian Kirtchev  <kirtchev@adacore.com>

* atree.ads (Nkind_In): Add 10 and 11 parameter versions.
* checks.adb (Install_Primitive_Elaboration_Check): Mark the setting of
the elaboration flag as elaboration code.
* einfo.adb (Contract): Update the comments.
(Ignore_SPARK_Mode_Pragmas): Update the comments.
(SPARK_Aux_Pragma): Update the comments.
(SPARK_Aux_Pragma_Inherited): Update the comments.
(SPARK_Pragma): Update the comments. The attribute now applies
to all types and abstract states.
(SPARK_Pragma_Inherited): Update the comments. The attribute now
applies to all types and abstract states.
(Set_Contract): Update the comments.
(Set_Ignore_SPARK_Mode_Pragmas): Update the comments.
(Set_SPARK_Aux_Pragma): Update the comments.
(Set_SPARK_Aux_Pragma_Inherited): Update the comments.
(Set_SPARK_Pragma): Update the comments. The attribute now applies to
all types and abstract states.
(Set_SPARK_Pragma_Inherited): Update the comments. The attribute now
applies to all types and abstract states.
(Write_Field40_Name): Add output for SPARK_Pragma when it appears on a
type and abstract states.
* einfo.ads: Update the documentation of attributes SPARK_Pragma and
SPARK_Pragma_Inherited.  Both of them now apply to all types and
abstract states.
* exp_util.adb (Set_Elaboration_Flag): Mark the setting of the
elaboration flag as elaboration code.
* sem_ch3.adb: Add with and use clauses for Sem_Elab.
(Analyze_Full_Type_Declaration): Set the SPARK_Mode of the type. Record
a derived type for later processing by the ABE mechanism.
(Analyze_Incomplete_Type_Decl): Set the SPARK_Mode of the type.
(Analyze_Private_Extension_Declaration): Set the SPARK_Mode of the
type.
* sem_ch7.adb (Analyze_Private_Type_Declaration): Set the SPARK_Mode of
the type.
* sem_elab.adb: Define the term "early call region".  Update the
terminology for "scenario" and "target".  Update the architecture of
the ABE mechanism.  Update the steps which must be taken when adding a
new scenario.  Update the section on debugging ABE issues.  Add new
hash tables Early_Call_Regions and Recorded_SPARK_Scenarios.  Add new
table SPARK_Scenarios.  Hash table Elaboration_Context is now
Elaboration_Statuses.  The majority of Process_xxx routines have been
updated to better reflect their role.
(Add_Unit): Reimplemented.
(Check_Elaboration_Constituent): New routine.
(Check_Elaboration_Scenarios): Verify previously recorded scenarios for
conditional ABE issues. Verify previously recorded SPARK scenarios.
(Check_SPARK_Derived_Type): New routine.
(Check_SPARK_Instantiation): New routine.
(Check_SPARK_Scenario): New routine.
(Check_SPARK_Refined_State_Pragma): New routine.
(Early_Call_Region): New routine.
(Elaboration_Status): New routine.
(Ensure_Prior_Elaboration): Add new formal parameter Prag_Nam. The
implicit Elabotate[_All] pragma is now specified via Prag_Nam.
(Find_Early_Call_Region): New routine.
(Info_Scenario): Add output for refinement constituents.
(Is_Recorded_SPARK_Scenario): New routine.
(Is_Suitable_SPARK_Derived_Type): New routine.
(Is_Suitable_SPARK_Instantiation): New routine.
(Is_Suitable_SPARK_Refined_State_Pragma): New routine.
(Is_Visited_Body): New routine.
(Kill_Elaboration_Scenario): Reimplemented.
(Output_Active_Scenarios): Add output for pragma Refined_State.
(Output_SPARK_Refined_State_Pragma): New routine.
(Process_Conditional_ABE_Call): Remove the use of -gnatd.v. The effect
is now achieved by different means.
(Process_Conditional_ABE_Call_SPARK): Verify that a call which precedes
the subprogram body appears within the early call region of the body.
Either ensure the prior elaboration of external subprograms or verify
that the context meets the suitable elaboration requirement.
(Process_Conditional_ABE_Instantiation_SPARK): New routine.
(Record_Elaboration_Scenario): Reimplement the portion which enforces
the level restrictions of the static model. Add support for SPARK
scenarios.
(Record_SPARK_Elaboration_Scenario): New routine.
(Reset_Visited_Bodies): New routine.
(Set_Early_Call_Region): New routine.
(Set_Elaboration_Status): New routine.
(Set_Is_Recorded_SPARK_Scenario): New routine.
(Update_Elaboration_Scenario): Reimplemented.
* sem_elab.ads: Add new subtype Library_Or_Instantiation_Level.
* sem_prag.adb (Analyze_Refined_State_In_Decl_Part): Save the pragma
for examination by the ABE Processing phase.
(Create_Abstract_State): Save the SPARK_Mode from the context.
* sem_util.adb (Is_Non_Preelaborable_Construct): New routine.
* sem_util.ads (Is_Non_Preelaborable_Construct): New routine.
* sinfo.adb (Is_Elaboration_Code): New routine.
(Set_Is_Elaboration_Code): New routine.
(Nkind_In): Add 10 and 11 parameter versions.
* sinfo.ads: Add new attribute Is_Elaboration_Code along with
occurrences in nodes.
(Is_Elaboration_Code): New routine along with pragma Inline.
(Set_Is_Elaboration_Code): New routine along with pragma Inline.
(Nkind_In): Add 10 and 11 parameter versions.

2017-11-16  Justin Squirek  <squirek@adacore.com>

* sem.adb (Analyze): Remove requirement that the original node of N be
an operator in the case that analysis on the node yields the relevant
operator - so prefer it instead.

From-SVN: r254802

sem_ch6.adb (Create_Extra_Formals): The type of the BIP_Object_Access formal must not have a designated type that...

2017-11-16  Bob Duff  <duff@adacore.com>

* sem_ch6.adb (Create_Extra_Formals): The type of the BIP_Object_Access
formal must not have a designated type that is the full view coming
from a limited-with'ed package.
* sem_util.adb,sem_util.ads (Incomplete_View_From_Limited_With): New
function called from sem_ch6.
* sem_ch5.adb (Analyze_Assignment): Treat user-defined concatenation
specially for b-i-p cases.

From-SVN: r254801

Provide more constraints for future use.

gcc/
* config/nds32/constraints.md: Provide more constraints.
* config/nds32/nds32.h (enum reg_class, REG_CLASS_NAMES,
REG_CLASS_CONTENTS): Define R5_REG, R8_REG, and FRAME_POINTER_REG to
support constraints usage.

Co-Authored-By: Kito Cheng <kito.cheng@gmail.com>
From-SVN: r254800

Remove the useless constant UNSPEC_VOLATILE_FUNC_RETURN.

gcc/
* config/nds32/constants.md (UNSPEC_VOLATILE_FUNC_RETURN): Remove.

From-SVN: r254799

Add new options: -mext-perf, -mext-perf2, -mext-string.

gcc/
* config/nds32/nds32.opt: Add mext-perf, mext-perf2, mext-string.
* config/nds32/nds32.opt: Refine the layout.
* config/nds32/nds32.c (TARGET_EXT_PERF, TARGET_EXT_PERF2,
TARGET_EXT_STRING): Support new options.
* config/nds32/nds32.h: Likewise.
* config/nds32/nds32.md: Likewise.
* config/nds32/nds32-predicates.c: Likewise.
* config/nds32/constraints.md: Likewise.
* common/config/nds32/nds32-common.c: Likewise.

Co-Authored-By: Kito Cheng <kito.cheng@gmail.com>
From-SVN: r254798

Fix GFNI check which didn't work properly in gfni+sse case

gcc/
PR target/82983
* config/i386/gfniintrin.h: Add sse check.
* config/i386/i386.c (ix86_expand_builtin): Fix gfni check.

From-SVN: r254797

Enable VBMI2 support [1/7]

gcc/
* common/config/i386/i386-common.c (OPTION_MASK_ISA_AVX512VBMI2_SET,
OPTION_MASK_ISA_AVX512VBMI2_UNSET): New.
(ix86_handle_option): Handle -mavx512vbmi2.
* config/i386/cpuid.h: Add bit_AVX512VBMI2.
* config/i386/driver-i386.c (host_detect_local_cpu): Handle new bit.
* config/i386/i386-c.c (__AVX512VBMI2__): New.
* config/i386/i386.c (ix86_target_string): Handle -mavx512vbmi2.
(ix86_valid_target_attribute_inner_p): Ditto.
* config/i386/i386.h (TARGET_AVX512VBMI2, TARGET_AVX512VBMI2_P): New.
* config/i386/i386.opt (mavx512vbmi2): New option.
* doc/invoke.texi: Add new option.

From-SVN: r254796

GFNI enabling [4/4]

gcc/
* config/i386/gfniintrin.h (_mm_gf2p8mul_epi8, _mm256_gf2p8mul_epi8,
_mm_mask_gf2p8mul_epi8, _mm_maskz_gf2p8mul_epi8,
_mm256_mask_gf2p8mul_epi8, _mm256_maskz_gf2p8mul_epi8,
_mm512_mask_gf2p8mul_epi8, _mm512_maskz_gf2p8mul_epi8,
_mm512_gf2p8mul_epi8): New intrinsics.
* config/i386/i386-builtin-types.def
(V64QI_FTYPE_V64QI_V64QI): New type.
* config/i386/i386-builtin.def (__builtin_ia32_vgf2p8mulb_v64qi,
__builtin_ia32_vgf2p8mulb_v64qi_mask, __builtin_ia32_vgf2p8mulb_v32qi,
__builtin_ia32_vgf2p8mulb_v32qi_mask, __builtin_ia32_vgf2p8mulb_v16qi,
__builtin_ia32_vgf2p8mulb_v16qi_mask): New builtins.
* config/i386/sse.md (vgf2p8mulb_*): New pattern.
* config/i386/i386.c (ix86_expand_args_builtin): Handle new type.
gcc/testsuite/
* gcc.target/i386/avx512f-gf2p8mulb-2.c: New runtime tests.
* gcc.target/i386/avx512vl-gf2p8mulb-2.c: Ditto.
* gcc.target/i386/gfni-1.c: Add tests for GF2P8MUL.
* gcc.target/i386/gfni-2.c: Ditto.
* gcc.target/i386/gfni-3.c: Ditto.
* gcc.target/i386/gfni-4.c: Ditto.

From-SVN: r254795

* include/std/numeric (gcd): Fix typo.

From-SVN: r254794

Daily bump.

From-SVN: r254793

i386.c (x86_print_call_or_nop): Emit 5 byte nop explicitly as a stream of bytes.

* config/i386/i386.c (x86_print_call_or_nop): Emit 5 byte nop
explicitly as a stream of bytes.

From-SVN: r254788

altivec.h (vec_xst_be): New #define.

[gcc]

2017-11-15  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

* config/rs6000/altivec.h (vec_xst_be): New #define.
* config/rs6000/altivec.md (altivec_vperm_<mode>_direct): Rename
and externalize from *altivec_vperm_<mode>_internal.
* config/rs6000/rs6000-builtin.def (XL_BE_V16QI): Remove macro
instantiation.
(XL_BE_V8HI): Likewise.
(XL_BE_V4SI): Likewise.
(XL_BE_V4SI): Likewise.
(XL_BE_V2DI): Likewise.
(XL_BE_V4SF): Likewise.
(XL_BE_V2DF): Likewise.
(XST_BE): Add BU_VSX_OVERLOAD_X macro instantiation.
* config/rs6000/rs6000-c.c (altivec_overloaded_builtins): Correct
all array entries with these keys: VSX_BUILTIN_VEC_XL,
VSX_BUILTIN_VEC_XL_BE, VSX_BUILTIN_VEC_XST.  Add entries for key
VSX_BUILTIN_VEC_XST_BE.
* config/rs6000/rs6000.c (altivec_expand_xl_be_builtin): Remove.
(altivec_expand_builtin): Remove handling for VSX_BUILTIN_XL_BE_*
built-ins.
(altivec_init_builtins): Replace conditional calls to def_builtin
for __builtin_vsx_ld_elemrev_{v8hi,v16qi} and
__builtin_vsx_st_elemrev_{v8hi,v16qi} based on TARGET_P9_VECTOR
with unconditional calls.  Remove calls to def_builtin for
__builtin_vsx_le_be_<mode>.  Add a call to def_builtin for
__builtin_vec_xst_be.
* config/rs6000/vsx.md (vsx_ld_elemrev_v8hi): Convert define_insn
to define_expand, and add alternate RTL generation for P8.
(*vsx_ld_elemrev_v8hi_internal): New define_insn based on
vsx_ld_elemrev_v8hi.
(vsx_ld_elemrev_v16qi): Convert define_insn to define_expand, and
add alternate RTL generation for P8.
(*vsx_ld_elemrev_v16qi_internal): New define_insn based on
vsx_ld_elemrev_v16qi.
(vsx_st_elemrev_v8hi): Convert define_insn
to define_expand, and add alternate RTL generation for P8.
(*vsx_st_elemrev_v8hi_internal): New define_insn based on
vsx_st_elemrev_v8hi.
(vsx_st_elemrev_v16qi): Convert define_insn to define_expand, and
add alternate RTL generation for P8.
(*vsx_st_elemrev_v16qi_internal): New define_insn based on
vsx_st_elemrev_v16qi.

[gcc/testsuite]

2017-11-15  Bill Schmidt  <wschmidt@linux.vnet.ibm.com>

* gcc.target/powerpc/swaps-p8-26.c: Modify expected code
generation.

From-SVN: r254787

PR testsuite/82988 - g++.dg/cpp0x/lambda/lambda-switch.C fail

gcc/testsuite/ChangeLog:

PR testsuite/82988
* g++.dg/cpp0x/lambda/lambda-switch.C: Prune unimportant warning.

From-SVN: r254786

Fix gcd breakage.

* include/std/numeric (gcd): Use remove_cv_t, not remove_cv.

From-SVN: r254785

Move gcc/testsuite entries to gcc/testsuite/ChangeLog

From-SVN: r254784

i386: Add X86_TUNE_EMIT_VZEROUPPER

Add X86_TUNE_EMIT_VZEROUPPER to indicate if vzeroupper instruction should
be inserted before a transfer of control flow out of the function.  It is
turned on by default unless we are tuning for KNL.  Users can always use
-mzeroupper or -mno-zeroupper to override X86_TUNE_EMIT_VZEROUPPER.

gcc/

PR target/82990
* config/i386/i386.c (pass_insert_vzeroupper::gate): Remove
TARGET_AVX512ER check.
(ix86_option_override_internal): Set MASK_VZEROUPPER if
neither -mzeroupper nor -mno-zeroupper is used and
TARGET_EMIT_VZEROUPPER is set.
* config/i386/i386.h (TARGET_EMIT_VZEROUPPER): New.
* config/i386/x86-tune.def: Add X86_TUNE_EMIT_VZEROUPPER.

gcc/testsuite/

PR target/82990
* gcc.target/i386/pr82942-2.c: Add -mtune=knl.
* gcc.target/i386/pr82990-1.c: New test.
* gcc.target/i386/pr82990-2.c: Likewise.
* gcc.target/i386/pr82990-3.c: Likewise.
* gcc.target/i386/pr82990-4.c: Likewise.
* gcc.target/i386/pr82990-5.c: Likewise.
* gcc.target/i386/pr82990-6.c: Likewise.
* gcc.target/i386/pr82990-7.c: Likewise.

From-SVN: r254783

rs6000.c (rs6000_gimple_fold_builtin): Add support for folding of vector compares.

2017-11-15  Will Schmidt  <will_schmidt@vnet.ibm.com>

[gcc]

* config/rs6000/rs6000.c (rs6000_gimple_fold_builtin): Add support for
folding of vector compares.
(fold_build_vec_cmp): New helper function.
(fold_compare_helper): New helper function.
(builtin_function_type): Add compare builtins to the list of functions
having unsigned arguments.  Cosmetic updates to comment indentation.
* config/rs6000/vsx.md (vcmpneb, vcmpneh, vcmpnew): Update to specify
the not+eq combination.

[testsuite]

* gcc.target/powerpc/builtins-3-p9.c: Add -O1, update
expected codegen checks.
* gcc.target/powerpc/vec-cmp-sel.c: Mark vars as volatile.
* gcc.target/powerpc/vsu/vec-cmpne-0.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-1.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-2.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-3.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-4.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-5.c: Add -O1.
* gcc.target/powerpc/vsu/vec-cmpne-6.c: Add -O1.

From-SVN: r254782

Minor improvements to Filesystem tests

* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Leave
error_code unset.
* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
Check for past-the-end before dereferencing.
* testsuite/experimental/filesystem/iterators/
recursive_directory_iterator.cc: Likewise.

From-SVN: r254781

re PR fortran/78240 (ICE in match_clist_expr, at fortran/decl.c:728)

2017-11-15  Steven G. Kargl  <kargl@gcc.gnu.org>

PR fortran/78240
gfortran.dg/pr78240.f90: Prune run-on errors.

From-SVN: r254780

Add noexcept to generic std::size, std::empty and std::data

* include/bits/range_access.h (size, empty, data): Add conditional
noexcept to generic overloads.

From-SVN: r254779