From: Tulio Magno Quites Machado Filho <tuliom@linux.ibm.com>

Remove all -L directories from LINK_OS_EXTRA_SPEC32 and
LINK_OS_EXTRA_SPEC64 so that user directories specified at
build time have higher preference over the advance toolchain libraries.

Set MD_STARTFILE_PREFIX to $prefix/lib/ and MD_STARTFILE_PREFIX_1 to
$at/lib/ so that a compiler library has preference over the Advance
Toolchain libraries.


	* config.gcc: Move -L usage from LINK_OS_EXTRA_SPEC32 and
	LINK_OS_EXTRA_SPEC64 to MD_STARTFILE_PREFIX and
	MD_STARTFILE_PREFIX_1 when using --with-advance-toolchain.

From-SVN: r276702

2019-10-08  Richard Biener  <rguenther@suse.de>

	* tree-vectorizer.h (_stmt_vec_info::v_reduc_type): Remove.
	(_stmt_vec_info::is_reduc_info): Add.
	(STMT_VINFO_VEC_REDUCTION_TYPE): Remove.
	(vectorizable_condition): Remove.
	(vectorizable_shift): Likewise.
	(vectorizable_reduction): Adjust.
	(info_for_reduction): New.
	* tree-vect-loop.c (vect_force_simple_reduction): Fold into...
	(vect_analyze_scalar_cycles_1): ... here.
	(vect_analyze_loop_operations): Adjust.
	(needs_fold_left_reduction_p): Simplify for single caller.
	(vect_is_simple_reduction): Likewise.  Remove stmt restriction
	for nested cycles not part of double reductions.
	(vect_model_reduction_cost): Pass in the reduction type.
	(info_for_reduction): New function.
	(vect_create_epilog_for_reduction): Use it, access reduction
	meta off the stmt info it returns.  Use STMT_VINFO_REDUC_TYPE
	instead of STMT_VINFO_VEC_REDUCTION_TYPE.
	(vectorize_fold_left_reduction): Remove pointless assert.
	(vectorizable_reduction): Analyze the full reduction when
	visiting the outermost PHI.  Simplify.  Use STMT_VINFO_REDUC_TYPE
	instead of STMT_VINFO_VEC_REDUCTION_TYPE.  Direct reduction
	stmt code-generation to vectorizable_* in most cases.  Verify
	code-generation only for cases handled by
	vect_transform_reductuon.
	(vect_transform_reduction): Use info_for_reduction to get at
	reduction meta.  Simplify.
	(vect_transform_cycle_phi): Likewise.
	(vectorizable_live_operation): Likewise.
	* tree-vect-patterns.c (vect_reassociating_reduction_p): Look
	at the PHI node for STMT_VINFO_REDUC_TYPE.
	* tree-vect-slp.c (vect_schedule_slp_instance): Remove no
	longer necessary code.
	* tree-vect-stmts.c (vectorizable_shift): Make static again.
	(vectorizable_condition): Likewise.  Get at reduction related
	info via info_for_reduction.
	(vect_analyze_stmt): Adjust.
	(vect_transform_stmt): Likewise.
	* tree-vectorizer.c (vec_info::new_stmt_vec_info): Initialize
	STMT_VINFO_REDUC_TYPE instead of STMT_VINFO_VEC_REDUCTION_TYPE.

	* gcc.dg/vect/pr65947-1.c: Adjust.
	* gcc.dg/vect/pr65947-13.c: Likewise.
	* gcc.dg/vect/pr65947-14.c: Likewise.
	* gcc.dg/vect/pr65947-4.c: Likewise.
	* gcc.dg/vect/pr80631-1.c: Likewise.
	* gcc.dg/vect/pr80631-2.c: Likewise.

From-SVN: r276700

	gcc/fortran/
	* parse.c (parse_executable): Add missing ST_OMP_TARGET_SIMD.

	libgomp/
	* testsuite/libgomp.fortran/target-simd.f90: New.

From-SVN: r276698

Also remove the creation of the html/ext sub-directory, which has been
unused since revision r245258.

	* doc/Makefile.am (doc-html-docbook-regenerate): New target.
	(${docbook_outdir}/html): Do not create unused 'html/ext' directory.
	* doc/Makefile.in: Regenerate.
	* doc/xml/manual/documentation_hacking.xml: Document new target.
	* doc/html/*: Regenerate.

From-SVN: r276695

	gcc/fortran/
	* match.h (gfc_match_omp_eos_error): Renamed from gfc_match_omp_eos.
	* openmp.c (gfc_match_omp_eos): Make static.
	(gfc_match_omp_eos_error): New.
	* parse.c (matchs, matchdo, matchds): Do as done for 'matcho' -
        if error occurred after OpenMP/OpenACC directive matched, do not
	try other directives.
	(decode_oacc_directive, decode_omp_directive): Call new function
	instead.

	testsuite/
	* gfortran.dg/goacc/continuation-free-form.f95: Update dg-error.

From-SVN: r276694

This reverts "Remove broken URL from libstdc++ manual" by restoring the
link, but using an archived copy from the Wayback Machine.

	* doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
	* doc/html/*: Regenerate.

From-SVN: r276693

Follow-up to trunk 275343:

	* MAINTAINERS: Add back Trevor Smigiel; move into Write After
	Approval section.

From-SVN: r276692

Extend 'libgfortran/runtime/minimal.c' per r274599 "PR fortran/68401 Improve allocation error message"

	libgfortran/
	PR fortran/68401
	* runtime/minimal.c (os_error_at): New function.

From-SVN: r276691

	libgfortran/
	* runtime/minimal.c: Revise.

From-SVN: r276690

From-SVN: r276689

On ILP32 targets, there's an extra UXTW instruction to extend
the incoming pointer before the load.  It doesn't seem worth
complicating the test for that, since all we're checking is
that an optimisation takes place, and that optimisation isn't
related to pointer size.

2019-10-08  Richard Sandiford  <richard.sandiford@arm.com>

gcc/testsuite/
	* gcc.target/aarch64/torture/simd-abi-9.c: Require LP64 for
	the function body test.

From-SVN: r276688

Since TS 18661-1 has been integrated into C2X, this patch makes C2X
imply -fno-fp-int-builtin-inexact.

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

gcc:
	* doc/invoke.texi (-ffp-int-builtin-inexact): Document
	-fno-fp-int-builtin-inexact default for C2X.

gcc/c-family:
	* c-opts.c (c_common_post_options): Set
	-fno-fp-int-builtin-inexact for C2X.

gcc/testsuite:
	* gcc.dg/torture/builtin-fp-int-inexact-c2x.c: New test.

From-SVN: r276686

From-SVN: r276685

2019-10-07  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
	    Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91532
	* tree-if-conv.c: Include tree-ssa-dse.h.
	(ifcvt_local_dce): Change param from bb to loop,
	and call dse_classify_store.
	(tree_if_conversion): Pass loop instead of loop->header as arg
	to ifcvt_local_dce.
	* tree-ssa-dse.c: Include tree-ssa-dse.h.
	(delete_dead_or_redundant_assignment): Remove static qualifier from
	declaration, and add prototype in tree-ssa-dse.h.
	(dse_store_status): Move to tree-ssa-dse.h.
	(dse_classify_store): Remove static qualifier and add new tree param
	stop_at_vuse, and add prototype in tree-ssa-dse.h.
	* tree-ssa-dse.h: New header.

Co-Authored-By: Richard Biener <rguenther@suse.de>

From-SVN: r276681

	* config/msp430/msp430.md: Revert: Group zero_extend* insns together.

From-SVN: r276680

2019-10-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config/msp430/msp430.md: Group zero_extend* insns together.

From-SVN: r276679

For weak, hidden vars the indirection should just be as normal, that
is that the indirections for such symbols should appear in the non-lazy
symbol pointers table, not in the .data section.

gcc/ChangeLog:

2019-10-07  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin.c (machopic_output_indirection): Don't put
	hidden symbol indirections into the .data section, use the
	non-lazy symbol pointers section as normal.
	(darwin_encode_section_info): Record if a symbol is hidden.
	* config/darwin.h (MACHO_SYMBOL_FLAG_HIDDEN_VIS): New.
	(MACHO_SYMBOL_HIDDEN_VIS_P): New.

From-SVN: r276675

We want to improve the detection and caching of symbol-properties
so that (a) we can make the compiler's output match the platform
norms (b) we can improve efficiency by checking flags instead of
inspecting strings. (c) The fix for PR71767 was a largish hammer
and we want to reduce the number of symbols that are made linker-
visible.

This first patch is largely typographical changes with no functional
difference intended:

- Tries to ensure that there's no overlap between the symbols used in
the Mach-O case and those declared in the i386 or rs6000 port trees.

 - Some improvement to comments.

- Makes the naming of the symbol flags consistent with other uses.
 
 - Provides a predicate macro for each use.
 
gcc/ChangeLog:

2019-10-07  Iain Sandoe  <iain@sandoe.co.uk>

	* config/darwin.c (machopic_symbol_defined_p): Use symbol flag
	predicates instead of accessing bits directly.
	(machopic_indirect_call_target): Likewise.
	(machopic_output_indirection): Likewise.
	(darwin_encode_section_info): Improve description.  Use renamed
	symbol flags.  Use predicate macros for variables and functions.
	* config/darwin.h:
	Rename MACHO_SYMBOL_VARIABLE to MACHO_SYMBOL_FLAG_VARIABLE.
	Rename MACHO_SYMBOL_DEFINED to MACHO_SYMBOL_FLAG_DEFINED.
	Rename MACHO_SYMBOL_STATIC to MACHO_SYMBOL_FLAG_STATIC.
	(MACHO_SYMBOL_VARIABLE_P): New.
	(MACHO_SYMBOL_DEFINED_P):New.
	(MACHO_SYMBOL_STATIC_P): New.
	* config/i386/darwin.h (MACHO_SYMBOL_FLAG_VARIABLE): Delete.
	(SYMBOL_FLAG_SUBT_DEP): New.
	* config/rs6000/darwin.h (SYMBOL_FLAG_SUBT_DEP): New.

From-SVN: r276674

2019-10-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config/msp430/msp430.c (msp430_file_end): s/msp_/msp430_/
	(msp430_expand_epilogue): Likewise.
	* config/msp430/predicates.md: Likewise.
	* config/msp430/msp430.md: Likewise.
	Replace blocks of 8 spaces with tabs.

From-SVN: r276671

2019-10-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config/msp430/msp430-protos.h (msp430_split_addsi): New prototype.
	* config/msp430/msp430.c (msp430_split_addsi): New.
	* config/msp430/msp430.md: Call msp430_split_addsi () instead of using
	a block of C code for splitting addsi.

From-SVN: r276670

	* config/i386/i386-expand.c (ix86_expand_floorceildf_32,
	ix86_expand_rounddf_32): Reorder functions.
	* config/i386/i386-protos.h: Update..

From-SVN: r276668

gcc/ChangeLog:

2019-10-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* config.in: Regenerate.
	* config/msp430/constraints.md: Fix docstring for "Ys" constraint.
	Add new "Yx" constraint.
	* config/msp430/driver-msp430.c (msp430_propagate_region_opt): New spec
	function.
	* config/msp430/msp430-protos.h (msp430_op_not_in_high_mem): New
	prototype.
	* config/msp430/msp430.c (msp430_option_override): Allow the lower
	code/data region to be selected in the small memory model.
	(msp430_section_attr): Don't warn if the "section" and "lower"
	attributes are used together.
	(msp430_handle_generic_attribute): Likewise.
	(msp430_var_in_low_mem): New function.
	(TARGET_ENCODE_SECTION_INFO): Define.
	(msp430_encode_section_info): New function.
	(gen_prefix): Return early in the small memory model.
	Require TARGET_USE_LOWER_REGION_PREFIX to be set before adding the
	".lower" prefix if -m{code,data}-region=lower have been passed.
	(msp430_output_aligned_decl_common): Emit common symbols when
	-mdata-region=lower is passed unless TARGET_USE_LOWER_REGION_PREFIX is
	set. 
	(TARGET_ASM_FILE_END): Define.
	(msp430_file_end): New function.
	(msp430_do_not_relax_short_jumps): Allow relaxation when
	function will be in the lower region.
	(msp430_op_not_in_high_mem): New function.
	(msp430_print_operand): Check "msp430_op_not_in_high_mem" for
	the 'X' operand selector. 
	Clarify comment for 'x' operand selector.
	* config/msp430/msp430.h (LINK_SPEC): Propagate
	-m{code,data}-region to the linker via spec function
	msp430_propagate_region_opt.
	(msp430_propagate_region_opt): New prototype.
	(EXTRA_SPEC_FUNCTIONS): Add msp430_propagate_region_opt.
	(SYMBOL_FLAG_LOW_MEM): Define.
	* config/msp430/msp430.md (addsipsi3): Add missing "%X" operand
	selector.
	(zero_extendqihi2): Fix operand number used by "%X" selector.
	(zero_extendqisi2): Likewise.
	(zero_extendhisi2): Likewise.
	(movqi): Use "Yx" constraint in place of "%X" operand selector.
	(movhi): Likewise.
	(addqi3): Likewise.
	(addhi3): Likewise.
	(addsi3): Likewise.
	(addhi3_cy): Likewise.
	(addchi4_cy): Likewise.
	(subqi3): Likewise.
	(subhi3): Likewise.
	(subsi3): Likewise.
	(bic<mode>3): Likewise.
	(and<mode>3): Likewise.
	(ior<mode>3): Likewise.
	(xor<mode>3): Likewise.
	(slli_1): Add missing "%X" operand selector.
	(slll_1): Likewise.
	(slll_2): Likewise.
	(srai_1): Likewise.
	(sral_1): Likewise.
	(sral_2): Likewise.
	(srli_1): Likewise.
	(srll_1): Likewise.
	(cbranchqi4_real): Use "Yx" constraint in place of "%X" operand
	selector.
	(cbranchhi4_real): Likewise.
	(cbranchqi4_reversed): Likewise.
	(cbranchhi4_reversed): Likewise.
	(*bitbranch<mode>4): Likewise.
	(*bitbranch<mode>4_z): Remove unnecessary "%x" operand selector.
	* config/msp430/msp430.opt (mcode-region=): Set default to
	MSP430_REGION_LOWER. Improve docstring.
	(mdata-region=): Likewise.
	(muse-lower-region-prefix): New option.
	* config/msp430/t-msp430 (MULTILIB_OPTIONS): Add
	mdata-region=none multilib. 
	(MULTILIB_MATCHES): Set mdata-region={upper,either} to match
	mdata-region=none multilib. 
	MULTILIB_EXCEPTIONS: Remove.
	MULTILIB_REQUIRED: Define.
	* configure: Regenerate.
	* configure.ac: Define HAVE_AS_GNU_ATTRIBUTE and
	HAVE_AS_MSPABI_ATTRIBUTE if GAS version >= 2.33.50.
	* doc/extend.texi: Clarify comment for {upper,lower,either}
	function attributes.
	Add separate description for "lower" variable attribute.

gcc/testsuite/ChangeLog:

2019-10-07  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* gcc.target/msp430/430x-insns.c: New test.
	* gcc.target/msp430/data-attributes-2.c: Remove dg-warning
	directives for conflicts between the "section" and "lower" attributes.
	* gcc.target/msp430/msp430.exp
	(check_effective_target_msp430_region_not_lower): New.
	(check_effective_target_msp430_region_lower): New.
	* gcc.target/msp430/object-attributes-430.c: New test.
	* gcc.target/msp430/object-attributes-default.c: New test.
	* gcc.target/msp430/object-attributes-mlarge-any-region.c: New test.
	* gcc.target/msp430/object-attributes-mlarge.c: New test.

From-SVN: r276665

From-SVN: r276664

From-SVN: r276663

/cp
2019-10-07  Paolo Carlini  <paolo.carlini@oracle.com>

	* call.c (resolve_args): Use cp_expr_loc_or_input_loc in one place.
	* decl.c (grokdeclarator): Use id_loc in one place.
	* decl2.c (build_anon_union_vars): Use DECL_SOURCE_LOCATION.
	* parser.c (cp_parser_delete_expression): Fix the location of the
	returned expression.
	(cp_parser_throw_expression): Likewise.
	* pt.c (determine_specialization): Use DECL_SOURCE_LOCATION.

/testsuite
2019-10-07  Paolo Carlini  <paolo.carlini@oracle.com>

	* g++.dg/diagnostic/not-a-function-template-1.C: New.
	* g++.dg/template/crash107.C: Adjust expected location.
	* g++.dg/template/dependent-expr1.C: Check locations.
	* g++.dg/template/error17.C: Check location.

From-SVN: r276661

z13 supports only non-signaling vector comparisons.  This means we
cannot vectorize LT, LE, GT, GE and LTGT when compiling for z13.
However, we cannot express this restriction today: the code only checks
whether vcond$a$b optab exists, but this does not say anything about the
operation.

Introduce a function that checks whether back-end supports vector
comparisons with individual rtx codes by matching vcond expander's third
argument with a fake comparison with the corresponding rtx code.

gcc/ChangeLog:

2019-10-07  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/77918
	* optabs-tree.c (vcond_icode_p): New function.
	(vcond_eq_icode_p): Likewise.
	(expand_vec_cond_expr_p): Use vcond_icode_p and
	vcond_eq_icode_p.
	* optabs.c (can_vcond_compare_p): New function.
	* optabs.h (can_vcond_compare_p): Likewise.

From-SVN: r276660

Right now gimplifier does not allow VEC_COND_EXPR's condition to trap
and introduces a temporary if this could happen, for example, generating

  _5 = _4 > { 2.0e+0, 2.0e+0, 2.0e+0, 2.0e+0 };
  _6 = VEC_COND_EXPR <_5, { -1, -1, -1, -1 }, { 0, 0, 0, 0 }>;

from GENERIC

  VEC_COND_EXPR < (*b > { 2.0e+0, 2.0e+0, 2.0e+0, 2.0e+0 }) ,
                  { -1, -1, -1, -1 } ,
		  { 0, 0, 0, 0 } >

This is not necessary and makes the resulting GIMPLE harder to analyze.
Change the gimplifier so as to allow COND_EXPR and VEC_COND_EXPR
conditions to trap.

This patch takes special care to avoid introducing trapping comparisons
in GIMPLE_COND.  They are not allowed, because they would require 3
outgoing edges (then, else and EH), which is awkward to say the least.
Therefore, computations of such conditions should live in their own basic
blocks.

gcc/ChangeLog:

2019-10-07  Ilya Leoshkevich  <iii@linux.ibm.com>

	PR target/77918
	* gimple-expr.c (gimple_cond_get_ops_from_tree): Assert that the
	caller passes a non-trapping condition.
	(is_gimple_condexpr): Allow trapping conditions.
	(is_gimple_condexpr_1): New helper function.
	(is_gimple_condexpr_for_cond): New function, acts like old
	is_gimple_condexpr.
	* gimple-expr.h (is_gimple_condexpr_for_cond): New function.
	* gimple.c (gimple_could_trap_p_1): Handle COND_EXPR and
	VEC_COND_EXPR. Fix an issue with statements like i = (fp < 1.).
	* gimplify.c (gimplify_cond_expr): Use
	is_gimple_condexpr_for_cond.
	(gimplify_expr): Allow is_gimple_condexpr_for_cond.
	* tree-eh.c (operation_could_trap_p): Assert on COND_EXPR and
	VEC_COND_EXPR.
	(tree_could_trap_p): Handle COND_EXPR and VEC_COND_EXPR.
	* tree-ssa-forwprop.c (forward_propagate_into_gimple_cond): Use
	is_gimple_condexpr_for_cond, remove pointless tmp check
	(forward_propagate_into_cond): Remove pointless tmp check.

From-SVN: r276659

gcc/

        * gimple-iterator.h (gsi_next_nonvirtual_phi): Change the semantics to
        match that of other gsi_next_* functions.  Adjust the comment.
        (gsi_start_nonvirtual_phis): New function.
        * ipa-icf.c (sem_function::compare_phi_node): Update uses of
        gsi_next_nonvirtual_phi accordingly.  (No functional change.)

From-SVN: r276658

        * gcc/doc/invoke.texi (-Wuninitialized): Don't mention the clobbered by
        setjmp situation here.  Fix a verb's ending: "the exact variables or
        elements for which there are warnings depends" -> "... depend".

From-SVN: r276657

From-SVN: r276655

From-SVN: r276654

has one sub-range.

From-SVN: r276653

From-SVN: r276651

IRA's make_early_clobber_and_input_conflicts checks for cases in
which an output operand is likely to be an earlyclobber and an input
operand is unlikely to be tieable with it.  If so, the allocno for
the output conflicts with the allocno for the input.  This seems
to work well.

However, a similar situation arises if an output operand is likely
to be tied to one of a set of input operands X and if another input
operand has a different value from all of the operands in X.
E.g. if we have:

  0: "=r, r"
  1: "0, r"
  2: "r, 0"
  3: "r, r"

operand 0 will always be tied to operand 1 or operand 2, so if operand 3
is different from them both, operand 0 acts like an earlyclobber as far
as operand 3 (only) is concerned.  The same is true for operand 2 in:

  0: "=r"
  1: "0"
  2: "r"

In the second example, we'd normally have a copy between operand 1 and
operand 0 if operand 1 dies in the instruction, and so there's rarely
a problem.  But if operand 1 doesn't die in the instruction, operand 0
still acts as an earlyclobber for operand 2 (if different from operand 1),
since in that case LRA must copy operand 1 to operand 0 before the
instruction.

As the existing comment says:

    Avoid introducing unnecessary conflicts by checking classes of the
    constraints and pseudos because otherwise significant code
    degradation is possible for some targets.

I think that's doubly true here.  E.g. it's perfectly reasonable to have
constraints like:

  0: "=r, r"
  1: "0, r"
  2: "r, r"

on targets like s390 that have shorter instructions for tied operands,
but that don't want the size difference to influence RA too much.
We shouldn't treat operand 0 as earlyclobber wrt operand 2 in that case.

This patch therefore treats a normal tied non-earlyclobber output as
being effectively earlyclobber wrt to an input if it is so for *all*
preferred alternatives.

2019-10-07  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* ira-lives.c (check_and_make_def_conflict): Handle cases in which
	DEF is not a true earlyclobber but is tied to a specific input
	operand, and so is effectively earlyclobber wrt inputs that have
	different values.
	(make_early_clobber_and_input_conflicts): Pass this case to the above.

From-SVN: r276650

This patch adds CONSTEXPR to constructors and operators in machmode.h,
excluding the controversial constexpr-resistant "() {}" constructors,
which would become "= default" if we required C++11.

Some of the other routines could potentially be constexpr too,
but that can be done on an as-needed basis.

2019-10-07  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* machmode.h (opt_mode): Mark constructors with CONSTEXPR.
	(pod_mode): Mark operators likewise.
	(scalar_int_mode): Mark non-default constructors and
	operators with CONSTEXPR.
	(scalar_float_mode, scalar_mode, complex_mode): Likewise.
	(fixed_size_mode): Likewise.

From-SVN: r276649

The problem in this PR was that vzeroupper has an effect on register
contents, but those effects weren't modelled in the rtl pattern,
which was just an unspec_volatile.

This patch fixes that by running a subpass after vzeroupper insertion
to add SETs and CLOBBERs as appropriate.  See the comments in the patch
for more details.

2019-10-07  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR target/91994
	* config/i386/sse.md (avx_vzeroupper): Turn into a define_expand
	and wrap the unspec_volatile in a parallel.
	(*avx_vzeroupper): New define_insn.  Use a match_parallel around
	the unspec_volatile.
	* config/i386/predicates.md (vzeroupper_pattern): Expect the
	unspec_volatile to be wrapped in a parallel.
	* config/i386/i386-features.c (ix86_add_reg_usage_to_vzeroupper)
	(ix86_add_reg_usage_to_vzerouppers): New functions.
	(rest_of_handle_insert_vzeroupper): Use them to add register
	usage information to the vzeroupper instructions.

gcc/testsuite/
	PR target/91994
	* gcc.target/i386/pr91994.c: New test.

From-SVN: r276648

re PR tree-optimization/91975 (worse code for small array copy using pointer arithmetic than array indexing)

2019-10-07  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91975
	* tree-ssa-loop-ivcanon.c (constant_after_peeling): Consistently
	handle invariants.

	* g++.dg/tree-ssa/ivopts-3.C: Adjust.
	* gcc.dg/vect/vect-profile-1.c: Disable cunrolli.
	* gcc.dg/vect/vect-double-reduc-6.c: Disable unrolling of
	the innermost loop.
	* gcc.dg/vect/vect-93.c: Likewise.
	* gcc.dg/vect/vect-105.c: Likewise.
	* gcc.dg/vect/pr79920.c: Likewise.
	* gcc.dg/vect/no-vfa-vect-102.c: Likewise.
	* gcc.dg/vect/no-vfa-vect-101.c: Likewise.
	* gcc.dg/vect/pr83202-1.c: Operate on a larger array.
	* gfortran.dg/vect/vect-8.f90: Likewise.
	* gcc.dg/tree-ssa/cunroll-2.c: Scan early unrolling dump instead
	of late one.

From-SVN: r276645

From-SVN: r276644

	Commit this missing part which had been rejected.

From-SVN: r276640

As Maxim pointed out, r276309 broke -O3 bootstrap for aarch64-linux-gnu.
It turns out that EXECUTE_IF_SET_IN_HARD_REG_SET isn't safe to use for
temporary objects because their lifetimes don't extend to the end of
the loop.  This patch therefore uses an explicit temporary instead.

Other patches in the series already used this style (but for
full_reg_and_partial_clobbers rather than full_reg_clobbers),
so AFAICT this is the only place that needs fixing.

2019-10-06  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* var-tracking.c (dataflow_set_clear_at_call): Hoist temporary
	function result outside of EXECUTE_IF_SET_IN_HARD_REG_SET.

From-SVN: r276639