ira-conflicts.c (print_allocno_conflicts): Always print something, even for allocno's with no conflicts.

gcc/
	* ira-conflicts.c (print_allocno_conflicts): Always print something,
	even for allocno's with no conflicts.
	(print_conflicts): Print an extra newline.

From-SVN: r270420

When auto-inc-dec creates a new mem to compute the cost of doing some
transform, it forgets to copy over the alignment of the original mem.
This gives wrong costs, for example, for rs6000 a floating point load
or store is hugely expensive if unaligned.  This patch fixes it.


	* auto-inc-dec.c (attempt_change): Set the alignment of the
	temporary memory to that of the original.

From-SVN: r270419

	* typeck.c (build_class_member_access_expr): Check
	cp_unevaluated_operand.

	* g++.dg/cpp0x/decltype70.C: New test.

From-SVN: r270418

targhooks.c (default_print_patchable_function_entry): Emit __patchable_function_entries section with writable flags to allow...

	* targhooks.c (default_print_patchable_function_entry): Emit
	__patchable_function_entries section with writable flags to allow
	relocation resolution.

From-SVN: r270417

From-SVN: r270416

	* dg-extract-results.sh: Only handle WARNING: program timed out
	lines specially in "$MODE" == "sum".  Restore previous behavior
	for "$MODE" != "sum".  Clear has_timeout and timeout_cnt if in
	a different variant or curfile is empty.
	* dg-extract-results.py: Fix a typo.

From-SVN: r270415

	PR middle-end/90095
	* internal-fn.c (expand_mul_overflow): Don't set SUBREG_PROMOTED_VAR_P
	on lowpart SUBREGs.

	* gcc.dg/pr90095-1.c: New test.
	* gcc.dg/pr90095-2.c: New test.

From-SVN: r270410

In C++1z drafts up to N4606 the constexpr keyword was missing from the
detailed description of this function, despite being shown in the class
synopsis.  That was fixed editorially for N4618, but our implementation
was not corrected to match.

	* include/std/optional (optional::value_or(U&&) &&): Add missing
	constexpr specifier.
	* testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
	for disengaged optionals and rvalue optionals.
	* testsuite/20_util/optional/observers/4.cc: Likewise.

From-SVN: r270409

Apply upper/dot rule on diagnostic messages.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_init): Format diagnostic string.
	(arc_override_options): Likewise.
	(check_if_valid_regno_const): Likewise.
	(arc_reorg): Likewise.

From-SVN: r270408

Many of these patterns only worked in 32-bit mode, and some only worked
in 64-bit mode.  This patch makes these use Pmode, fixing the PR.  On
the other hand, the stack updates have to use the same mode for the
stack pointer as for the value stored, so let's simplify that a bit.

Many of these patterns pass the wrong mode to
avoiding_indexed_address_p (it should be the mode of the datum
accessed, not the mode of the pointer).

Finally, I merge some patterns into one (using iterators).


	PR target/17108
	* config/rs6000/rs6000.c (rs6000_split_multireg_move): Adjust pattern
	name.
	(rs6000_emit_allocate_stack_1): Simplify condition.  Adjust pattern
	name.
	* config/rs6000/rs6000.md (bits): Add entries for SF and DF.
	(*movdi_update1): Use Pmode.
	(movdi_<mode>_update): Fix argument to avoiding_indexed_address_p.
	(movdi_<mode>_update_stack): Rename to ...
	(movdi_update_stack): ... this.  Fix comment.  Change condition. Don't
	use Pmode.
	(*movsi_update1): Use Pmode.
	(*movsi_update2): Use Pmode.
	(movsi_update): Rename to ...
	(movsi_<mode>_update): ... this.  Use Pmode.
	(movsi_update_stack): Fix condition.
	(*movhi_update1): Use Pmode.  Fix argument to
	avoiding_indexed_address_p.
	(*movhi_update2): Ditto.
	(*movhi_update3): Ditto.
	(*movhi_update4): Ditto.
	(*movqi_update1): Ditto.
	(*movqi_update2): Ditto.
	(*movqi_update3): Ditto.
	(*movsf_update1, *movdf_update1): Merge, rename to...
	(*mov<mode>_update1): This.  Use Pmode.  Fix argument to
	avoiding_indexed_address_p.  Add "size" attribute.
	(*movsf_update2, *movdf_update2): Merge, rename to...
	(*mov<mode>_update2): This.  Ditto.
	(*movsf_update3): Use Pmode.  Fix argument to
	avoiding_indexed_address_p.
	(*movsf_update4): Ditto.
	(allocate_stack): Simplify condition.  Adjust pattern names.

From-SVN: r270407

[PR90048] Fortran OpenACC 'private' clause rejected for predetermined private loop iteration variable

	gcc/fortran/
	PR fortran/90048
	* openmp.c (gfc_resolve_do_iterator): Handle sharing_clauses for
	OpenACC, too.
	(gfc_resolve_oacc_blocks): Populate sharing_clauses with private
	clauses.
	gcc/testsuite/
	PR fortran/90048
	* gfortran.dg/goacc/private-explicit-kernels-1.f95: New file.
	* gfortran.dg/goacc/private-explicit-parallel-1.f95: Likewise.
	* gfortran.dg/goacc/private-explicit-routine-1.f95: Likewise.

From-SVN: r270406

	gcc/testsuite/
	PR fortran/90067
	PR fortran/90114
	* gfortran.dg/goacc/private-1.f95: Remove file.
	* gfortran.dg/goacc/private-2.f95: Likewise.
	* gfortran.dg/goacc/private-predetermined-kernels-1.f95: New file.
	* gfortran.dg/goacc/private-predetermined-parallel-1.f95:
	Likewise.
	* gfortran.dg/goacc/private-predetermined-routine-1.f95: Likewise.

From-SVN: r270405

	PR target/89093
	* config/arm/arm.c (arm_valid_target_attribute_rec): Don't skip
	whitespace at the start of target attribute string.

	* gcc.target/arm/pr89093-2.c: New test.

From-SVN: r270404

gcc/d/ChangeLog:

2019-04-17  Iain Buclaw  <ibuclaw@gdcproject.org>

	* d-system.h (POSIX): Define unix as POSIX.
	(INT32_MAX, INT32_MIN, INT64_MIN, UINT32_MAX, UINT64_MAX): Provide
	fallback definitions.

From-SVN: r270403

From-SVN: r270401

Updated build and invocation of idgen and impcnvgen, ensuring that they
are removed when cleaning the build directory.

Added BUILD_LIBDEPS on the link command for the generator programs as
well, which is necessary when the system installed compiler is not GCC.

gcc/d/ChangeLog:

2019-04-16  Iain Buclaw  <ibuclaw@gdcproject.org>

	* Make-lang.in (d.mostyclean): Clean idgen and impcnvgen.
	(d/idgen): Rename to d/idgen$(build_exeext), add BUILD_LIBDEPS.
	(d/impcnvgen): Rename to d/impcnvgen$(build_exeext), add
	BUILD_LIBDEPS.
	(d/id.c): Call idgen$(build_exeext).
	(d/impcnvtab.c): Call impcnvgen$(build_exeext).

From-SVN: r270397

re PR c++/86953 (compiler crashes with constexpr operator== and specific struct (cxx_eval_bit_field_ref, at cp/constexpr.c:2704))

	PR c++/86953
	* g++.dg/cpp0x/constexpr-86953.C: New test.

From-SVN: r270396

	PR target/84369
	* config/rs6000/power9.md: Add store forwarding bypass.

From-SVN: r270394

2019-04-16  Martin Liska  <mliska@suse.cz>

	* bootstrap-lto-lean.mk: Filter out -flto in STAGEtrain_CFLAGS.

From-SVN: r270393

2019-04-16  Dominique d'Humieres  <dominiq@gcc.gnu.org>

	* g++.dg/lto/pr89358_0.C: Replace dg-* with dg-lto-*.

From-SVN: r270390

When we remove an RTL call, we wouldn't clean up references to the
return value of the call in debug insns.  Make it so that we do.


for  gcc/ChangeLog

	PR debug/89528
	* valtrack.c (dead_debug_insert_temp): Reset debug references
	to the return value of a call being removed.

for  gcc/testsuite/ChangeLog

	PR debug/89528
	* gcc.dg/guality/pr89528.c: New.

From-SVN: r270389

The test fell back to long long and long when __int128 is not
available, but it assumed sizeof(long) < sizeof(long long) because of
a shift count that would be out of range for a long long if their
widths are the same.  Fixed by splitting it up into two shifts.


for  gcc/testsuite/ChangeLog

	PR rtl-optimization/86438
	* gcc.dg/torture/pr86438.c: Split up too-wide shift.

From-SVN: r270388

xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (arc_register_move_cost): Remove.
	* config/arc/arc.c (arc_register_move_cost): Re-purpose it to
	implement target hook.
	(arc_memory_move_cost): New function.
	(TARGET_REGISTER_MOVE_COST): Define.
	(TARGET_MEMORY_MOVE_COST): Likewise.
	* config/arc/arc.h (REGISTER_MOVE_COST): Remove.
	(MEMORY_MOVE_COST): Likewise.

fix

From-SVN: r270387

New LRA algorithms require the all the register constraints to be
defined using define_register_constraint keyword. However, Rs5
constraint was not LRA proof. Remove it and replace it by equivalent
Rcd constraint.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md (sibcall_insn): Use Rcd constraint.
	(sibcall_value_insn): Likewise.
	* config/arc/constraints.md (Rs5): Remove.

From-SVN: r270386

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

        * config/arc/arc.c (arc_hard_regno_modes): Add two missing modes
        for last two fake registers.
        (arc_conditional_register_usage): Make sure fake frame and arg
        pointer regs are in general regs class.
        (FRAME_POINTER_MASK): Remove.
        (RETURN_ADDR_MASK): Remove.
        (arc_must_save_register): Use hard frame regnum.
        (frame_restore_reg): Use hard_frame_pointer_rtx.
        (arc_save_callee_saves): Likewise.
        (arc_restore_callee_saves): Likewise.
        (arc_save_callee_enter): Likewise.
        (arc_restore_callee_leave): Likewise.
        (arc_save_callee_milli): Likewise.
        (arc_eh_return_address_location): Likewise.
        (arc_check_multi): Use hard frame regnum.
        (arc_can_eliminate): Likewise.
        * config/arc/arc.h (FIXED_REGISTERS): Make FP register available
        for register allocator.
        (REG_CLASS_CONTENTS): Update GENERAL_REGS.
        (REGNO_OK_FOR_BASE_P): Consider FRAME_POINTER_REGNUM.
        (FRAME_POINTER_REGNUM): Change it to a fake register.
        (HARD_FRAME_POINTER_REGNUM): Defined.
        (ARG_POINTER_REGNUM): Change it to a new fake register.
        (ELIMINABLE_REGS): Update.
        (REGISTER_NAMES): Update names.
        * config/arc/arc.md (LP_START): Remove.
        (LP_END): Likewise.
        (shift_si3_loop): Update pattern.

From-SVN: r270385

1.The delay slot scheduler can reschedule some of the frame related
instructions resulting in having incorect CFI information. This patch
introduces a schedule blockage to avoid this problem.

2.There are cases when an interrupt may happen and not all the current
function stack operations are done, which may result in stack
corruption. Such an example is accessing an returning a local
structure members, which members are allocated on stack. The stack
adjustment and the accessing of the struct member can be reorder as
they may not use both the SP register for the access.

3.Also, do not save/restore SP when in interrupt. The SP is switch by
the core IRQ machinery.

gcc/
xxxx-xx-xx  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_expand_prologue): Emit blockage regardless
	to avoid delay slot scheduling.
	(arc_must_save_register): Don't save SP.
	* config/arc/arc.md (stack_tie): Remove.
	(UNSPEC_ARC_STKTIE): Likewise.

From-SVN: r270384

gcc/
	* config/nds32/nds32-md-auxiliary.c (nds32_split_ashiftdi3): Fix wrong
	code gen with large shift amount.

Co-Authored-By: Shiva Chen <shiva0217@gmail.com>

From-SVN: r270383

gcc/
	* config/nds32/nds32-pipelines-auxiliary.c (wext_odd_dep_p): Handle
	subreg.

From-SVN: r270382

	PR target/90096
	* config/i386/i386.c (ix86_target_string): Add ADD_ABI_P argument, only
	print -m64/-mx32/-m32 if it is true.
	(ix86_debug_options, ix86_function_specific_print): Pass true as
	ADD_ABI_P to ix86_target_string.
	(ix86_expand_builtin): Adjust ix86_target_string caller, pass true as
	ADD_ABI_P only if OPTION_MASK_ISA_64BIT is set in bisa and in that case
	or into it OPTION_MASK_ISA_ABI_64 or OPTION_MASK_ISA_ABI_X32.

	* gcc.target/i386/pr90096.c: New test.
	* gcc.target/i386/pr69255-1.c: Adjust expected diagnostics.
	* gcc.target/i386/pr69255-2.c: Likewise.
	* gcc.target/i386/pr69255-3.c: Likewise.

From-SVN: r270381

	PR rtl-optimization/90082
	* dce.c (can_delete_call): New function.
	(deletable_insn_p, mark_insn): Use it.

	* gcc.dg/pr90082.c: New test.

From-SVN: r270380

	PR tree-optimization/90090
	* tree-ssa-math-opts.c (is_division_by): Ignore divisions that can
	throw internally.
	(is_division_by_square): Likewise.  Formatting fix.

	* g++.dg/opt/pr90090.C: New test.

From-SVN: r270379

2019-04-16  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/56049
	* tree-ssa-loop-im.c (mem_ref_hasher::equal): Elide alias-set
	equality check if alias-set zero will prevail.

	* gfortran.dg/pr56049.f90: New testcase.

From-SVN: r270378

libphobos/ChangeLog:

2019-04-16  Iain Buclaw  <ibuclaw@gdcproject.org>

	* config.h.in: Regenerate.
	* configure: Regenerate.
	* m4/druntime/libraries.m4 (DRUNTIME_LIBRARIES_BACKTRACE): Set
	CPPFLAGS correctly for backtrace support test.

From-SVN: r270377

From-SVN: r270376

	* config/microblaze/microblaze.c (microblaze_expand_block_move): Treat
	size and alignment as unsigned.

From-SVN: r270373

	PR d/90059
	PR d/90060
	PR d/90062
libphobos: Merge upstream druntime 70b9fea6

Backports fixes in the extern(C) bindings for the Solaris/SPARC port.

Initial patch by Rainer Orth.

Reviewed-on: https://github.com/dlang/druntime/pull/2555

From-SVN: r270372

2019-04-15  Richard Biener  <rguenther@suse.de>

	PR debug/90074
	* tree-loop-distribution.c (destroy_loop): Preserve correct
	debug info.

	* gcc.dg/guality/pr90074.c: New testcase.

From-SVN: r270370

2019-04-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/90071
	* tree-ssa-reassoc.c (init_range_entry): Do not pick up
	abnormal operands from def stmts.

	* gcc.dg/torture/pr90071.c: New testcase.

From-SVN: r270369

The code that checks if an auto-increment from i0 or i1 is not lost is
a bit shaky.  The code to check the same for i2 is non-existent, and
cannot be implemented in a similar way at all.  So, this patch counts
all auto-increments, and makes sure we end up with the same number as
we started with.  This works because we still have a check that we
will not duplicate any.

We should do this some better way, but not while we are in stage 4.


	PR rtl-optimization/89794
	* combine.c (count_auto_inc): New function.
	(try_combine): Count how many auto_inc expressions there were in the
	original instructions.  Ensure we have the same number in the new
	instructions.  Remove the code that tried to ensure auto_inc side
	effects on i1 and i0 are not lost.

gcc/testsuite/
	PR rtl-optimization/89794
	* gcc.dg/torture/pr89794.c: New testcase.

From-SVN: r270368

2019-04-15  Richard Biener  <rguenther@suse.de>

	PR ipa/88936
	* tree.h (auto_var_p): Declare.
	* tree.c (auto_var_p): New function, split out from ...
	(auto_var_in_fn_p): ... here.
	* tree-ssa-structalias.c (struct variable_info): Add shadow_var_uid
	member.
	(new_var_info): Initialize it.
	(set_uids_in_ptset): Also set the shadow variable uid if required.
	(ipa_pta_execute): Postprocess points-to solutions assigning
	shadow variable uids for locals that may reach their containing
	function recursively.
	* tree-ssa-ccp.c (fold_builtin_alloca_with_align): Do not
	assert but instead check whether the points-to solution is
	a singleton.

	* gcc.dg/torture/pr88936-1.c: New testcase.
	* gcc.dg/torture/pr88936-2.c: Likewise.
	* gcc.dg/torture/pr88936-3.c: Likewise.

From-SVN: r270366