2018-07-31  Olivier Hainque  <hainque@adacore.com>

	* gcc.c (handle_spec_function): Accept a soft_matched_part
	argument, as do_spec_1.  Pass it down to ...
	(eval_spec_function): Accept a soft_matched_part argument,
	and pass it down to ...
	(do_spec_2): Accept a soft_matched_part argument, and pass
	it down to do_spec_1.
	(do_spec_1): Pass soft_matched_part to handle_spec_function.
	(handle_braces): Update call to handle_spec_function.
	(driver::set_up_specs): Update calls to do_spec_2.
	(compare_debug_dump_opt_spec_function): Likewise.
	(compare_debug_self_opt_spec_function): Likewise.

From-SVN: r263087

2018-06-07  Olivier Hainque  <hainque@adacore.com>

	* common.opt (nolibc): New option.
	* doc/invoke.texi (Link Options): Document it.
	* gcc.c (LINK_GCC_C_SEQUENCE_SPEC): Honor nolibc.
	* config/alpha/linux.h: Likewise.
	* config/arc/elf.h: Likewise.
	* config/arm/uclinux-elf.h: Likewise.
	* config/arm/unknown-elf.h: Likewise.
	* config/avr/avrlibc.h: Likewise.
	* config/bfin/bfin.h: Likewise.
	* config/bfin/linux.h: Likewise.
	* config/bfin/uclinux.h: Likewise.
	* config/darwin.h: Likewise.
	* config/darwin10.h: Likewise.
	* config/darwin12.h: Likewise.
	* config/gnu-user.h: Likewise.
	* config/lm32/uclinux-elf.h: Likewise.
	* config/pa/pa-hpux11.h: Likewise.
	* config/pa/pa64-hpux.h: Likewise.
	* config/sparc/sparc.h: Likewise.

From-SVN: r263083

2018-07-31  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	Revert 'AsyncI/O patch committed'
	2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
		Thomas Koenig <tkoenig@gcc.gnu.org>

	PR fortran/25829
	* gfortran.texi: Add description of asynchronous I/O.
	* trans-decl.c (gfc_finish_var_decl): Treat asynchronous variables
	as volatile.
	* trans-io.c (gfc_build_io_library_fndecls): Rename st_wait to
	st_wait_async and change argument spec from ".X" to ".w".
	(gfc_trans_wait): Pass ID argument via reference.

2018-07-31  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	Revert 'AsyncI/O patch committed'
	2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
		Thomas Koenig <tkoenig@gcc.gnu.org>

	PR fortran/25829
	* gfortran.dg/f2003_inquire_1.f03: Add write statement.
	* gfortran.dg/f2003_io_1.f03: Add wait statement.

2018-07-31  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	Revert 'AsyncI/O patch committed'
	2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
		Thomas Koenig <tkoenig@gcc.gnu.org>

	PR fortran/25829
	* Makefile.am: Add async.c to gfor_io_src.
	Add async.h to gfor_io_headers.
	* Makefile.in: Regenerated.
	* gfortran.map: Add _gfortran_st_wait_async.
	* io/async.c: New file.
	* io/async.h: New file.
	* io/close.c: Include async.h.
	(st_close): Call async_wait for an asynchronous unit.
	* io/file_pos.c (st_backspace): Likewise.
	(st_endfile): Likewise.
	(st_rewind): Likewise.
	(st_flush): Likewise.
	* io/inquire.c: Add handling for asynchronous PENDING
	and ID arguments.
	* io/io.h (st_parameter_dt): Add async bit.
	(st_parameter_wait): Correct.
	(gfc_unit): Add au pointer.
	(st_wait_async): Add prototype.
	(transfer_array_inner): Likewise.
	(st_write_done_worker): Likewise.
	* io/open.c: Include async.h.
	(new_unit): Initialize asynchronous unit.
	* io/transfer.c (async_opt): New struct.
	(wrap_scalar_transfer): New function.
	(transfer_integer): Call wrap_scalar_transfer to do the work.
	(transfer_real): Likewise.
	(transfer_real_write): Likewise.
	(transfer_character): Likewise.
	(transfer_character_wide): Likewise.
	(transfer_complex): Likewise.
	(transfer_array_inner): New function.
	(transfer_array): Call transfer_array_inner.
	(transfer_derived): Call wrap_scalar_transfer.
	(data_transfer_init): Check for asynchronous I/O.
	Perform a wait operation on any pending asynchronous I/O
	if the data transfer is synchronous. Copy PDT and enqueue
	thread for data transfer.
	(st_read_done_worker): New function.
	(st_read_done): Enqueue transfer or call st_read_done_worker.
	(st_write_done_worker): New function.
	(st_write_done): Enqueue transfer or call st_read_done_worker.
	(st_wait): Document as no-op for compatibility reasons.
	(st_wait_async): New function.
	* io/unit.c (insert_unit): Use macros LOCK, UNLOCK and TRYLOCK;
	add NOTE where necessary.
	(get_gfc_unit): Likewise.
	(init_units): Likewise.
	(close_unit_1): Likewise. Call async_close if asynchronous.
	(close_unit): Use macros LOCK and UNLOCK.
	(finish_last_advance_record): Likewise.
	(newunit_alloc): Likewise.
	* io/unix.c (find_file): Likewise.
	(flush_all_units_1): Likewise.
	(flush_all_units): Likewise.
	* libgfortran.h (generate_error_common): Add prototype.
	* runtime/error.c: Include io.h and async.h.
	(generate_error_common): New function.

2018-07-31  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	Revert 'AsyncI/O patch committed'.
	2018-07-25  Nicolas Koenig  <koenigni@gcc.gnu.org>
		Thomas Koenig <tkoenig@gcc.gnu.org>

	PR fortran/25829
	* testsuite/libgomp.fortran/async_io_1.f90: New test.
	* testsuite/libgomp.fortran/async_io_2.f90: New test.
	* testsuite/libgomp.fortran/async_io_3.f90: New test.
	* testsuite/libgomp.fortran/async_io_4.f90: New test.
	* testsuite/libgomp.fortran/async_io_5.f90: New test.
	* testsuite/libgomp.fortran/async_io_6.f90: New test.
	* testsuite/libgomp.fortran/async_io_7.f90: New test.

From-SVN: r263082

So the value can be used in places where an absolute path
is expected.

2018-07-31  Olivier Hainque  <hainque@adacore.com>

        * gcc.c (getenv_spec_function): Prepend '/' to value for
	allowed undefined variables.

From-SVN: r263081

From-SVN: r263080

In arm_block_set_aligned_vect 8-bit constants are generated as zero-
extended const_ints, not sign-extended as required.  Fix that.


	PR target/86640
	* config/arm/arm.c (arm_block_set_aligned_vect): Use gen_int_mode
	instead of GEN_INT.

From-SVN: r263075

Implement the proposed resolution from LWG 1052, which also resolves
DR 2118 by avoiding taking the address in the first place.

	PR libstdc++/86734
	* include/bits/stl_iterator.h (reverse_iterator::operator->): Call
	_S_to_pointer (LWG 1052, LWG 2118).
	(reverse_iterator::_S_to_pointer): Define overloaded helper functions.
	* testsuite/24_iterators/reverse_iterator/dr1052.cc: New test.
	* testsuite/24_iterators/reverse_iterator/dr2188.cc: New test.

From-SVN: r263074

20_util/memory_resource/2.cc FAILs on AIX 7.2.0.0, because aligned_alloc
incorrectly requires the alignment to be a multiple of sizeof(void*).

This adds a workaround to the operator new overload taking an alignment
value, to increase the alignment (and size) if needed.

	* libsupc++/new_opa.cc (operator new(size_t, align_val_t)): Add
	workaround for aligned_alloc bug on AIX.
	* testsuite/18_support/new_aligned.cc: New test.

From-SVN: r263073

gcc/testsuite/
	PR rtl-optimization/85160
	* gcc.target/powerpc/combine-2-2.c: New testcase.

From-SVN: r263072

From-SVN: r263070

2018-07-30  Tom Tromey  <tom@tromey.com>

	* cplus-dem.c (remember_Btype): Don't call memcpy with LEN==0.

From-SVN: r263069

2018-07-30  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * tree-ssa-forwprop.c (simplify_builtin_call): Don't create a not NUL
        terminated string literal.

From-SVN: r263068

This patch allows combine to combine two insns into two.  This helps
in many cases, by reducing instruction path length, and also allowing
further combinations to happen.  PR85160 is a typical example of code
that it can improve.

This patch does not allow such combinations if either of the original
instructions was a simple move instruction.  In those cases combining
the two instructions increases register pressure without improving the
code.  With this move test register pressure does no longer increase
noticably as far as I can tell.

(At first I also didn't allow either of the resulting insns to be a
move instruction.  But that is actually a very good thing to have, as
should have been obvious).


	PR rtl-optimization/85160
	* combine.c (is_just_move): New function.
	(try_combine): Allow combining two instructions into two if neither of
	the original instructions was a move.

From-SVN: r263067

2018-07-30  Christophe Lyon  <christophe.lyon@linaro.org>

	* config/arm/ieee754-df.S: Fix comment for code working on
	architectures >= 4.
	* config/arm/ieee754-sf.S: Likewise.

From-SVN: r263066

	PR target/86673
	* doc/extend.texi (Global Register Variables): Discourage use of type
	qualifiers.
	(Local Register Variables): Likewise.

From-SVN: r263065

In r262961 I only updated the out-of-line copy of ceil_log2.  This patch
applies the same change to the other (inline) one.

2018-07-30  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR tree-optimization/86506
	* hwint.h (ceil_log2): Resync with hwint.c implementation.

From-SVN: r263064

The idea behind the rclass loop in spill_hard_reg_in_range() seems to
be: find a hard_regno, which in general conflicts with reload regno,
but does not do so between `from` and `to`, and then do the live range
splitting based on this information. To check the absence of conflicts,
we make use of insn_bitmap, which does not contain insns which clobber
the hard_regno.

gcc/ChangeLog:

2018-07-30  Ilya Leoshkevich  <iii@linux.ibm.com>

        PR target/86547
	* lra-constraints.c (spill_hard_reg_in_range): When selecting the
	hard_regno, make sure no insn between `from` and `to` clobbers it.

From-SVN: r263063

Currently parallel-loop-1.c fails at -O0 on a Quadro M1200, because one of the
kernel launch configurations exceeds the resources available in the device, due
to the default dimensions chosen by the runtime.

This patch fixes that by taking the per-function max_threads_per_block into
account when using the default dimensions.

2018-07-30  Tom de Vries  <tdevries@suse.de>

	* plugin/plugin-nvptx.c (MIN, MAX): Redefine.
	(nvptx_exec): Ensure worker and vector default dims don't exceed
	targ_fn->max_threads_per_block.

From-SVN: r263062

The default dimensions are calculated using per-device properties, but
initialized once and used on all devices.

This patch fixes this problem by introducing per-device default dimensions.

2018-07-30  Tom de Vries  <tdevries@suse.de>

	* plugin/plugin-nvptx.c (struct ptx_device): Add default_dims field.
	(nvptx_open_device): Init default_dims for device.
	(nvptx_exec): Use default_dims from device.

From-SVN: r263061

Currently, if the user doesn't specify the number of workers for an openacc
region, the compiler hardcodes it to a default value.

This patch removes this functionality, such that the libgomp runtime can decide
on a default value.

2018-07-30  Cesar Philippidis  <cesar@codesourcery.com>
	    Tom de Vries  <tdevries@suse.de>

	* config/nvptx/nvptx.c (PTX_GANG_DEFAULT): Rename to ...
	(PTX_DEFAULT_RUNTIME_DIM): ... this.
	(nvptx_goacc_validate_dims): Set default worker and gang dims to
	PTX_DEFAULT_RUNTIME_DIM.
	(nvptx_dim_limit): Ignore GOMP_DIM_WORKER.

Co-Authored-By: Tom de Vries <tdevries@suse.de>

From-SVN: r263060

From-SVN: r263059

	* config/pa/pa.c (pa_output_addr_vec): Align address table.
	* config/pa/pa.h (JUMP_TABLES_IN_TEXT_SECTION): Revise comment.
	* config/pa/pa32-linux.h (JUMP_TABLES_IN_TEXT_SECTION): Define.

From-SVN: r263051

From-SVN: r263050

This makes it easier to compare cp_printer with gcc_cxxdiag_char_table
in c-format.c.

No functional change intended.

gcc/cp/ChangeLog:
	* error.c (cp_printer): In the leading comment, move "%H" and "%I"
	into alphabetical order, and add missing "%G" and "%K".  Within
	the switch statement, move cases 'G', 'H', 'I' and 'K' so that the
	cases are in alphabetical order.

From-SVN: r263046

From-SVN: r263045

2018-07-27  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/constraints.md (wG constraint): Delete, no longer
	used.
	* config/rs6000/predicates.md (p9_fusion_reg_operand): Rename
	predicate to reflect toc fusion has been deleted.
	(toc_fusion_mem_raw): Delete, no longer used.
	(toc_fusion_mem_wrapped): Likewise.
	* config/rs6000/rs6000-cpus.def (POWERPC_MASKS): Delete toc
	fusion mask bit.
	* config/rs6000/rs6000-protos.h (fusion_wrap_memory_address):
	Delete, no longer used.
	* config/rs6000/rs6000.c (struct rs6000_reg_addr): Delete fields
	meant to be used for toc fusion.
	(rs6000_debug_print_mode): Delete toc fusion debugging.
	(rs6000_debug_reg_global): Likewise.
	(rs6000_init_hard_regno_mode_ok): Delete setting up fields for toc
	fusion and secondary reload support that were never used.
	(rs6000_option_override_internal): Delete TOC fusion, that was only
	partially defined, and it did not work unless you also used the
	-mcmodel= switch.
	(rs6000_legitimate_address_p): Delete TOC fusion support.
	(rs6000_opt_masks): Likewise.
	(fusion_wrap_memory_address): Delete function, no longer used.
	(fusion_split_address); Delete TOC fusion support.
	* config/rs6000/rs6000.h (TARGET_TOC_FUSION_INT): Delete, no
	longer used with toc fusion being deleted.
	(TARGET_TOC_FUSION_FP): Likewise.
	* config/rs6000/rs6000.md (UNSPEC_FUSION_ADDIS): Delete TOC fusion
	UNSPEC.
	(toc fusion spliter): Delete TOC fusion support.
	(toc_fusionload_<mode>): Likewise.
	(toc_fusionload_di): Likewise.
	(fusion_gpr_load_<mode>): Delete generator function, this insn no
	longer needs to be named.  Rename predicate to delete TOC fusion.
	(fusion_gpr_<P:mode>_<GPR_FUSION:mode>_load): Likewise.
	(fusion_gpr_<P:mode>_<GPR_FUSION:mode>_store): Likewise.
	(fusion_vsx_<P:mode>_<GPR_FUSION:mode>_load): Likewise.
	(fusion_vsx_<P:mode>_<GPR_FUSION:mode>_store): Likewise.
	(p9 fusion peephole2s): Rename predicate to delete TOC fusion.

From-SVN: r263039

	* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
	ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
	zh_TW.po: Update.

From-SVN: r263036

    
    When writing stack frames to the pprof CPU profile machinery, it is
    very important to insure that the frames emitted do not contain any
    frames corresponding to artifacts of the profiling process itself
    (signal handlers, sigprof, etc). This patch changes runtime.sigprof to
    strip out those frames from the raw stack generated by
    "runtime.callers".
    
    Fixes golang/go#26595.
    
    Reviewed-on: https://go-review.googlesource.com/126175

From-SVN: r263035

extend.texi (Basic PowerPC Built-in Functions Available on ISA 2.05): Replace __uint128_t with __uint128 and __int128_t with __int128 in built-in...

gcc/ChangeLog:

2018-07-27  Kelvin Nilsen  <kelvin@gcc.gnu.org>

	* doc/extend.texi (Basic PowerPC Built-in Functions Available on
	ISA 2.05):  Replace __uint128_t with __uint128 and __int128_t with
	__int128 in built-in function prototypes.
	(PowerPC AltiVec Built-in Functions on ISA 2.07): Likewise.
	(PowerPC AltiVec Built-in Functions on ISA 3.0): Likewise.

From-SVN: r263033

gcc/ChangeLog:

	PR tree-optimization/86696
	* tree-ssa-strlen.c (get_min_string_length): Handle all integer
	types, including enums.
	(handle_char_store): Be prepared for the above function to fail.

gcc/testsuite/ChangeLog:

	PR tree-optimization/86696
	* gcc.dg/pr86696.C: New test.

From-SVN: r263032

gcc/testsuite/ChangeLog:
	PR tree-optimization/86636
	* gcc.c-torture/compile/pr86636.c: Add dg-do compile.
	Add dg-require-effective-target pthread.

From-SVN: r263031

CET kernel has been changed to place a restore token on shadow stack for
signal handler to enhance security.  It is usually transparent to user
programs since kernel will pop the restore token when signal handler
returns.  But when an exception is thrown from a signal handler, now
we need to remove _Unwind_Frames_Increment to pop the the restore token
from shadow stack.  Otherwise, we get

FAIL: g++.dg/torture/pr85334.C   -O0  execution test
FAIL: g++.dg/torture/pr85334.C   -O1  execution test
FAIL: g++.dg/torture/pr85334.C   -O2  execution test
FAIL: g++.dg/torture/pr85334.C   -O3 -g  execution test
FAIL: g++.dg/torture/pr85334.C   -Os  execution test
FAIL: g++.dg/torture/pr85334.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  execution test

	PR libgcc/85334
	* config/i386/shadow-stack-unwind.h (_Unwind_Frames_Increment):
	Removed.

From-SVN: r263030

level is lower than 2 or Os

From-SVN: r263028

From-SVN: r263027

From-SVN: r263022

	PR target/86612
	* gcc.target/powerpc/pr58673-2.c: Call strdup.

From-SVN: r263020

PR tree-optimization/86043 - strlen after memcpy partially overwriting a string not optimized
PR tree-optimization/86042 - missing strlen optimization after second strcpy

gcc/ChangeLog:

	PR tree-optimization/86043
	PR tree-optimization/86042
	* tree-ssa-strlen.c (handle_builtin_memcpy): Handle strict overlaps.
	(get_string_cst_length): Rename...
	(get_min_string_length): ...to this.  Add argument.
	(handle_char_store): Extend to handle multi-character stores by
	MEM_REF.
	* tree.c (initializer_zerop): Use new argument.  Handle MEM_REF.
	* tree.h (initializer_zerop): Add argument.

gcc/testsuite/ChangeLog:

	PR tree-optimization/86043
	PR tree-optimization/86042
	* gcc/testsuite/gcc.dg/attr-nonstring-2.c: Xfail test cases due to
	pr86688.
	* gcc.dg/strlenopt-44.c: New test.

From-SVN: r263018

From-SVN: r263016

	PR testsuite/86660
	* testsuite/libgomp.c++/for-15.C (results): Include it in
	omp declare target region.
	(main): Use map (always, tofrom: results) instead of
	map (tofrom: results).

From-SVN: r263011

	PR middle-end/86660
	* omp-low.c (scan_sharing_clauses): Don't ignore map clauses for
	declare target to variables if they have always,{to,from,tofrom} map
	kinds.

	* testsuite/libgomp.c/pr86660.c: New test.

From-SVN: r263010