2019-09-28  Bernd Edlinger  <bernd.edlinger@hotmail.de>
	    Richard Biener  <rguenther@suse.de>

	* expr.c (expand_assignment): Handle misaligned DECLs.
	(expand_expr_real_1): Handle FUNCTION_DECL as unaligned.
	* function.c (assign_parm_adjust_stack_rtl): Check movmisalign optab
	too.
	(assign_parm_setup_stack): Allocate properly aligned stack slots.
	* varasm.c (build_constant_desc): Align constants of misaligned types.
	* config/arm/predicates.md (aligned_operand): New predicate.
	* config/arm/arm.md (movdi, movsi, movhi, movhf, movsf, movdf): Use
	aligned_operand to check restrictions on memory addresses.
	* config/arm/neon.md (movti, mov<VSTRUCT>, mov<VH>): Likewise.
	* config/arm/vec-common.md (mov<VALL>): Likewise.

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

From-SVN: r274986

	PR libgomp/91530
	* config/i386/sse.md (vec_shl_<mode>, vec_shr_<mode>): Use
	V_128 iterator instead of VI_128.

	* testsuite/libgomp.c/scan-21.c: New test.
	* testsuite/libgomp.c/scan-22.c: New test.

From-SVN: r274985

	PR libgomp/91530
	* config/i386/sse.md (vec_shl_<mode>, vec_shr_<mode>): Use
	V_128 iterator instead of VI_128.

	* testsuite/libgomp.c/scan-21.c: New test.
	* testsuite/libgomp.c/scan-22.c: New test.

From-SVN: r274984

2019-08-28  Martin Liska  <mliska@suse.cz>

	PR tree-optimization/90970
	* builtins.c (check_access): Remove assignment to maxread
	as it hasn't been used since when it was introduced in r255755.

From-SVN: r274983

	* semantics.c (maybe_mark_exp_read_r): New function.
	(finish_if_stmt): Call it on THEN_CLAUSE and ELSE_CLAUSE.

	* g++.dg/cpp1z/constexpr-if31.C: New test.
	* g++.dg/cpp1z/constexpr-if32.C: New test.

From-SVN: r274982

	* cp-tree.h (decl_in_std_namespace_p): Declare.
	* semantics.c (is_std_constant_evaluated_p): New.
	(finish_if_stmt_cond): Warn about "std::is_constant_evaluated ()" in
	an if-constexpr.
	* typeck.c (decl_in_std_namespace_p): No longer static.

	* g++.dg/cpp2a/is-constant-evaluated9.C: New test.

From-SVN: r274981

From-SVN: r274980

gcc/ChangeLog:

	PR tree-optimization/91567
	* gimple-ssa-sprintf.c (get_string_length): Handle more forms of lengths
	of unknown strings.
	* vr-values.c (vr_values::extract_range_basic): Set strlen upper bound
	to PTRDIFF_MAX - 2.

gcc/testsuite/ChangeLog:

	PR tree-optimization/91567
	* gcc.dg/tree-ssa/builtin-snprintf-6.c: Xfail a subset of assertions
	on targets other than x86_64 to work around PR 83543.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-22.c: New test.

From-SVN: r274976

tree-ssa-strlen.c (printf_strlen_execute): Initialize the loop optimizer and SCEV before sizing ssa_ver_to_stridx.

	* tree-ssa-strlen.c (printf_strlen_execute): Initialize
	the loop optimizer and SCEV before sizing ssa_ver_to_stridx.

	* gcc.c-torture/compile/20190827-1.c: New test.

From-SVN: r274975

2019-08-27  Harald Anlauf  <anlauf@gmx.de>

	PR fortran/91496
	* gfortran.h: Extend struct gfc_iterator for loop annotations.
	* array.c (gfc_copy_iterator): Copy loop annotations by IVDEP,
	VECTOR, and NOVECTOR pragmas.
	* decl.c (gfc_match_gcc_ivdep, gfc_match_gcc_vector)
	(gfc_match_gcc_novector): New matcher functions handling IVDEP,
	VECTOR, and NOVECTOR pragmas.
	* match.h: Declare prototypes of matcher functions handling IVDEP,
	VECTOR, and NOVECTOR pragmas.
	* parse.c (decode_gcc_attribute, parse_do_block)
	(parse_executable): Decode IVDEP, VECTOR, and NOVECTOR pragmas;
	emit warning for unrecognized pragmas instead of error.
	* trans-stmt.c (gfc_trans_simple_do, gfc_trans_do): Add code to
	emit annotations for IVDEP, VECTOR, and NOVECTOR pragmas.
	* gfortran.texi: Document IVDEP, VECTOR, and NOVECTOR pragmas.

	PR fortran/91496
	* gfortran.dg/pr91496.f90: New testcase.

From-SVN: r274966

	* gcc.target/i386/sse4_1-round-roundeven-1.c (dg-options):
	Add -mfpmath=sse.
	* gcc.target/i386/sse4_1-round-roundeven-2.c (dg-options): Ditto.

From-SVN: r274964

	PR target/91528
	* config/i386/i386-features.c (convert_scalars_to_vector):
	Update crtl->stack_realign_needed, crtl->stack_realign_tried and
	crtl->stack_realign_processed.  Update crtl->drap_reg by calling
	targetm.calls.get_drap_rtx.  If drap_rtx is non-null then
	Update crtl->args.internal_arg_pointer and call fixup_tail_calls.

testsuite/ChangeLog:

	PR target/91528
	* gcc.target/i386/pr91528.c: New test.

From-SVN: r274962

gcc/testsuite/ChangeLog:

	PR c++/83431
	PR testsuite/91562
	* gcc.dg/strlenopt-8.c: Adjust pass/dump name.

From-SVN: r274961

Ensure that options lists fit cleanly inside the margins of a PDF page.
Reword description of option -ffrontend-loop-interchange so that it fits
cleanly inside the margins of a PDF page. Add options to those enabled
by -fdec.

From-SVN: r274958

    
    The Makefile was missing a dependency.
    
    Also remove runtime.inc.raw in mostlyclean.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191958

From-SVN: r274956

2019-08-27  Martin Liska  <mliska@suse.cz>

	PR lto/91478
	* simple-object-elf.c (simple_object_elf_copy_lto_debug_sections):
	First find a WEAK HIDDEN symbol in symbol table that will be
	preserved.  Later, use the symbol name for all removed symbols.

From-SVN: r274955

	* config/i386/i386-features.h
	(general_scalar_chain::~general_scalar_chain): Add.
	(general_scalar_chain::insns_conv): New bitmap.
	(general_scalar_chain::n_sse_to_integer): New.
	(general_scalar_chain::n_integer_to_sse): Likewise.
	(general_scalar_chain::make_vector_copies): Adjust signature.
	* config/i386/i386-features.c
	(general_scalar_chain::general_scalar_chain): Outline,
	initialize new members.
	(general_scalar_chain::~general_scalar_chain): New.
	(general_scalar_chain::mark_dual_mode_def): Record insns
	we need to insert conversions at and count them.
	(general_scalar_chain::compute_convert_gain): Account
	for conversion instructions at chain boundary.
	(general_scalar_chain::make_vector_copies): Generate a single
	copy for a def by a specific insn.
	(general_scalar_chain::convert_registers): First populate
	defs_map, then make copies at out-of chain insns.

From-SVN: r274953

	PR c++/91415
	* c-common.c (verify_tree): For LSHIFT_EXPR, RSHIFT_EXPR,
	COMPONENT_REF and ARRAY_REF in cxx_dialect >= cxx17 mode handle it
	like COMPOUND_EXPR rather than normal expression.

	* g++.dg/warn/sequence-pt-4.C: New test.

From-SVN: r274952

PR testsuite/91549

gcc/testsuite/ChangeLog:
	* gcc.dg/wrapped-binop-simplify.c: Test only on x86, s390 with lp64.

From-SVN: r274951

	PR libgomp/91530
	* testsuite/libgomp.c/scan-11.c: Add -msse2 option for sse2_runtime
	targets.
	* testsuite/libgomp.c/scan-12.c: Likewise.
	* testsuite/libgomp.c/scan-13.c: Likewise.
	* testsuite/libgomp.c/scan-14.c: Likewise.
	* testsuite/libgomp.c/scan-15.c: Likewise.
	* testsuite/libgomp.c/scan-16.c: Likewise.
	* testsuite/libgomp.c/scan-17.c: Likewise.
	* testsuite/libgomp.c/scan-18.c: Likewise.
	* testsuite/libgomp.c/scan-19.c: Likewise.
	* testsuite/libgomp.c/scan-20.c: Likewise.
	* testsuite/libgomp.c++/scan-9.C: Likewise.
	* testsuite/libgomp.c++/scan-10.C: Likewise.
	* testsuite/libgomp.c++/scan-11.C: Likewise.
	* testsuite/libgomp.c++/scan-12.C: Likewise.
	* testsuite/libgomp.c++/scan-14.C: Likewise.
	* testsuite/libgomp.c++/scan-15.C: Likewise.
	* testsuite/libgomp.c++/scan-13.C: Likewise.  Use sse2_runtime
	instead of i?86-*-* x86_64-*-* as target for scan-tree-dump-times.
	* testsuite/libgomp.c++/scan-16.C: Likewise.

From-SVN: r274947

Following the publication of https://kb.cert.org/vuls/id/129209/ I've
been having a look at GCC's implementation for Arm and AArch64.  I
haven't identified any issues yet, but it's a bit early to be
completely sure.

One observation, however, is that the instruction sequence that
initializes the stack canary might be vulnerable to producing a
reusable value if it were ever split early.  I don't think we ever
would, because the memory locations involved with the stack protector
are all marked volatile to ensure that the values are only loaded at
the point in time when the test is intended to happen, and that also
has the effect of making it unlikely that the value would be reused
without reloading.  Nevertheless, defence in depth is probably
warranted here.

So this patch just adds some comments warning that the patterns should
not be split.

	* config/arm/arm.md (stack_protect_set_insn): Add security-related
	comment.
	* config/aarch64/aarch64.md (stack_protect_set_<mode>): Likewise.

From-SVN: r274946

2019-08-27  Martin Liska  <mliska@suse.cz>

	* cgraph.c (cgraph_node::remove): Remove dead assignment before
	loop.
	* config/i386/i386-features.c (scalar_chain::emit_conversion_insns):
	Enclose in anonymous namespace.
	* config/i386/x86-tune-costs.h (struct processor_costs): Wrap
	hard_register initialization in braces.
	* tree-vrp.h (value_range_base::supports_type_p): Return false
	for function with boolean return type.

From-SVN: r274945

From-SVN: r274944

2019-08-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91390
	PR fortran/91473
	* frontend-passes.c (gfc_check_externals): Make
	gfc_errors_to_warnings conditional on -fallow-argument-mismatch.
	* invoke.texi: Document -fallow-argument-mismatch.
	* lang.opt: Add -fallow-argument-mismatch.

2019-08-26  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91390
	PR fortran/91473
	* gfortran.dg/used_before_typed_4.f90: Change warning to error.
	* gfortran.dg/argument_checking_20.f90: New test.

From-SVN: r274937

    
    This change extends the work in https://golang.org/cl/51131 to include
    placeholder pointer types created for Go function types, which can
    also be left dangling/unresolved in some instances. This fixes an
    assert in Llvm_backend::materializeComposite.
    
    Test case can be found in https://golang.org/cl/191743.
    
    Updates golang/go#33020.
    
    Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/191744

From-SVN: r274935

	* config/i386/i386.c (emit_i387_cw_initialization)
	<case I387_CW_ROUNDEVEN>: Fix masking operand value.

From-SVN: r274934

gcc/ChangeLog:

	PR c++/83431
	* gimple-ssa-sprintf.c (pass_data_sprintf_length): Remove object.
	(sprintf_dom_walker): Remove class.
	(get_int_range): Make argument const.
	(directive::fmtfunc, directive::set_precision): Same.
	(format_none): Same.
	(build_intmax_type_nodes): Same.
	(adjust_range_for_overflow): Same.
	(format_floating): Same.
	(format_character): Same.
	(format_string): Same.
	(format_plain): Same.
	(get_int_range): Cast away constness.
	(format_integer): Same.
	(get_string_length): Call get_range_strlen_dynamic.  Handle
	null lendata.maxbound.
	(should_warn_p): Adjust argument scope qualifier.
	(maybe_warn): Same.
	(format_directive): Same.
	(parse_directive): Same.
	(is_call_safe): Same.
	(try_substitute_return_value): Same.
	(sprintf_dom_walker::handle_printf_call): Rename...
	(handle_printf_call): ...to this.  Initialize target to host charmap
	here instead of in pass_sprintf_length::execute.
	(struct call_info): Make global.
	(sprintf_dom_walker::compute_format_length): Make global.
	(sprintf_dom_walker::handle_gimple_call): Same.
	* passes.def (pass_sprintf_length): Replace with pass_strlen.
	* print-rtl.c (print_pattern): Reduce the number of spaces to
	avoid -Wformat-truncation.
	* tree-pass.h (make_pass_warn_printf): New function.
	* tree-ssa-strlen.c (strlen_optimize): New variable.
	(get_string_length): Add comments.
	(get_range_strlen_dynamic): New function.
	(check_and_optimize_call): New function.
	(handle_integral_assign): New function.
	(strlen_check_and_optimize_stmt): Factor code out into
	strlen_check_and_optimize_call and handle_integral_assign.
	(strlen_dom_walker::evrp): New member.
	(strlen_dom_walker::before_dom_children): Use evrp member.
	(strlen_dom_walker::after_dom_children): Use evrp member.
	(printf_strlen_execute): New function.
	(pass_strlen::gate): Update to handle printf calls.
	(dump_strlen_info): New function.
	(pass_data_warn_printf): New variable.
	(pass_warn_printf): New class.
	* tree-ssa-strlen.h (get_range_strlen_dynamic): Declare.
	(handle_printf_call): Same.
	* tree-vrp.c (value_range_base::type): Adjust assertion.
	* vr-values.c (vr_values::update_value_range): Use type of the first
	argument rather than the second.

gcc/testsuite/ChangeLog:

	PR c++/83431
	* gcc.dg/strlenopt-63.c: New test.
	* gcc.dg/pr79538.c: Adjust text of expected warning.
	* gcc.dg/pr81292-1.c: Adjust pass name.
	* gcc.dg/pr81292-2.c: Same.
	* gcc.dg/pr81703.c: Same.
	* gcc.dg/strcmpopt_2.c: Same.
	* gcc.dg/strcmpopt_3.c: Same.
	* gcc.dg/strcmpopt_4.c: Same.
	* gcc.dg/strlenopt-1.c: Same.
	* gcc.dg/strlenopt-10.c: Same.
	* gcc.dg/strlenopt-11.c: Same.
	* gcc.dg/strlenopt-13.c: Same.
	* gcc.dg/strlenopt-14g.c: Same.
	* gcc.dg/strlenopt-14gf.c: Same.
	* gcc.dg/strlenopt-15.c: Same.
	* gcc.dg/strlenopt-16g.c: Same.
	* gcc.dg/strlenopt-17g.c: Same.
	* gcc.dg/strlenopt-18g.c: Same.
	* gcc.dg/strlenopt-19.c: Same.
	* gcc.dg/strlenopt-1f.c: Same.
	* gcc.dg/strlenopt-2.c: Same.
	* gcc.dg/strlenopt-20.c: Same.
	* gcc.dg/strlenopt-21.c: Same.
	* gcc.dg/strlenopt-22.c: Same.
	* gcc.dg/strlenopt-22g.c: Same.
	* gcc.dg/strlenopt-24.c: Same.
	* gcc.dg/strlenopt-25.c: Same.
	* gcc.dg/strlenopt-26.c: Same.
	* gcc.dg/strlenopt-27.c: Same.
	* gcc.dg/strlenopt-28.c: Same.
	* gcc.dg/strlenopt-29.c: Same.
	* gcc.dg/strlenopt-2f.c: Same.
	* gcc.dg/strlenopt-3.c: Same.
	* gcc.dg/strlenopt-30.c: Same.
	* gcc.dg/strlenopt-31g.c: Same.
	* gcc.dg/strlenopt-32.c: Same.
	* gcc.dg/strlenopt-33.c: Same.
	* gcc.dg/strlenopt-33g.c: Same.
	* gcc.dg/strlenopt-34.c: Same.
	* gcc.dg/strlenopt-35.c: Same.
	* gcc.dg/strlenopt-4.c: Same.
	* gcc.dg/strlenopt-48.c: Same.
	* gcc.dg/strlenopt-49.c: Same.
	* gcc.dg/strlenopt-4g.c: Same.
	* gcc.dg/strlenopt-4gf.c: Same.
	* gcc.dg/strlenopt-5.c: Same.
	* gcc.dg/strlenopt-50.c: Same.
	* gcc.dg/strlenopt-51.c: Same.
	* gcc.dg/strlenopt-52.c: Same.
	* gcc.dg/strlenopt-53.c: Same.
	* gcc.dg/strlenopt-54.c: Same.
	* gcc.dg/strlenopt-55.c: Same.
	* gcc.dg/strlenopt-56.c: Same.
	* gcc.dg/strlenopt-6.c: Same.
	* gcc.dg/strlenopt-61.c: Same.
	* gcc.dg/strlenopt-7.c: Same.
	* gcc.dg/strlenopt-8.c: Same.
	* gcc.dg/strlenopt-9.c: Same.
	* gcc.dg/strlenopt.h (snprintf, snprintf): Declare.
	* gcc.dg/tree-ssa/builtin-snprintf-6.c: New test.
	* gcc.dg/tree-ssa/builtin-snprintf-7.c: New test.
	* gcc.dg/tree-ssa/builtin-snprintf-8.c: New test.
	* gcc.dg/tree-ssa/builtin-snprintf-9.c: New test.
	* gcc.dg/tree-ssa/builtin-sprintf-warn-21.c: New test.
	* gcc.dg/tree-ssa/dump-4.c: New test.
	* gcc.dg/tree-ssa/pr83501.c: Adjust pass name.

From-SVN: r274933

From-SVN: r274932

From-SVN: r274931

	* constexpr.c (cxx_eval_store_expression): Check FIELD_DECL instead
	of DECL_P.

	* g++.dg/cpp0x/pr91545.C: New test.

From-SVN: r274930

2019-08-26  Richard Biener  <rguenther@suse.de>

	* config/i386/i386-features.c (general_remove_non_convertible_regs):
	Remove.
	(convert_scalars_to_vector): Do not call it.

From-SVN: r274929

gcc/ChangeLog:

2019-08-26  Tejas Joshi  <tejasjoshi9673@gmail.com>
            Uros Bizjak  <ubizjak@gmail.com>

	* builtins.c (mathfn_built_in_2): Change CASE_MATHFN to
	CASE_MATHFN_FLOATN for roundeven.
	* config/i386/i386.c (ix86_i387_mode_needed): Add case
	I387_ROUNDEVEN.
	(ix86_mode_needed): Likewise.
	(ix86_mode_after): Likewise.
	(ix86_mode_entry): Likewise.
	(ix86_mode_exit): Likewise.
	(ix86_emit_mode_set): Likewise.
	(emit_i387_cw_initialization): Add case I387_CW_ROUNDEVEN.
	* config/i386/i386.h (ix86_stack_slot): Add SLOT_CW_ROUNDEVEN.
	(ix86_entry): Add I387_ROUNDEVEN.
	(avx_u128_state): Add I387_CW_ANY.
	* config/i386/i386.md: Define UNSPEC_FRNDINT_ROUNDEVEN.
	(define_int_iterator): Likewise.
	(define_int_attr): Likewise for rounding_insn, rounding and ROUNDING.
	(define_constant): Define ROUND_ROUNDEVEN mode.
	(define_attr): Add roundeven mode for i387_cw.
	(<rouding_insn><mode>2): Add condition for ROUND_ROUNDEVEN.
	* internal-fn.def (ROUNDEVEN): New builtin function.
	* optabs.def (roundeven_optab): New optab.

gcc/testsuite/ChangeLog:

2019-08-26  Tejas Joshi  <tejasjoshi9673@gmail.com>

	* gcc.target/i386/sse4_1-round-roundeven-1.c: New test.
	* gcc.target/i386/sse4_1-round-roundeven-2.c: New test.


Co-Authored-By: Uros Bizjak <ubizjak@gmail.com>

From-SVN: r274928

2019-08-26  Tejas Joshi  <tejasjoshi9673@gmail.com>

        * builtins.c (mathfn_built_in_2): Added CASE_MATHFN_FLOATN
        for ROUNDEVEN.
        * builtins.def: Added function definitions for roundeven function
        variants.
        * fold-const-call.c (fold_const_call_ss): Added case for roundeven
        function call.  Adjust condition for floor, ceil, trunc and round.
        * fold-const.c (negate_mathfn_p): Added case for roundeven function.
        (tree_call_nonnegative_warnv_p): Added case for roundeven function.
        (integer_valued_real_call_p): Added case for roundeven function.
        * real.c (is_even): New function. Returns true if real number is even,
        otherwise returns false.
        (is_halfway_below): New function. Returns true if real number is
        halfway between two integers, else return false.
        (real_roundeven): New function. Round real number to nearest integer,
        rounding halfway cases towards even.
        * real.h (real_value): Added descriptive comments.  Added function
        declaration for roundeven function.
        * doc/extend.texi (Other Builtins): List roundeven variants among
        functions which can be handled as builtins.

gcc/testsuite/ChangeLog:

2019-08-26  Tejas Joshi  <tejasjoshi9673@gmail.com>

        * gcc.dg/torture/builtin-round-roundeven.c: New test.
        * gcc.dg/torture/builtin-round-roundevenf128.c: New test.

From-SVN: r274927

2019-08-26  Richard Biener  <rguenther@suse.de>

	PR target/91522
	PR target/91527
	* config/i386/i386-features.h (general_scalar_chain::defs_map):
	New member.
	(general_scalar_chain::replace_with_subreg): Remove.
	(general_scalar_chain::replace_with_subreg_in_insn): Likewise.
	(general_scalar_chain::convert_reg): Adjust signature.
	* config/i386/i386-features.c (scalar_chain::add_insn): Do not
	iterate over all defs of a reg.
	(general_scalar_chain::replace_with_subreg): Remove.
	(general_scalar_chain::replace_with_subreg_in_insn): Likewise.
	(general_scalar_chain::make_vector_copies): Populate defs_map,
	place copy only after defs that are used as vectors in the chain.
	(general_scalar_chain::convert_reg): Emit a copy for a specific
	def in a specific instruction.
	(general_scalar_chain::convert_op): All reg uses are converted here.
	(general_scalar_chain::convert_insn): Emit copies for scalar
	uses of defs here.  Replace uses with the copies we created.
	Replace and convert the def.  Adjust REG_DEAD notes, remove
	REG_EQUIV/EQUAL notes.
	(general_scalar_chain::convert_registers): Only handle copies
	into the chain here.

From-SVN: r274926

Add the transform (T)(A) + CST -> (T)(A + CST).  This enables vrp to
simplify sequences like

_2 = a_7 - 1;
_3 = (long unsigned int) _2;
_5 = _3 + 1

that ivopts creates.

--

gcc/ChangeLog:

2019-08-26  Robin Dapp  <rdapp@linux.ibm.com>

        * match.pd: Add (T)(A) + CST -> (T)(A + CST).

gcc/testsuite/ChangeLog:

2019-08-26  Robin Dapp  <rdapp@linux.ibm.com>

        * gcc.dg/tree-ssa/copy-headers-5.c: Do not run vrp pass.
        * gcc.dg/tree-ssa/copy-headers-7.c: Do not run vrp pass.
        * gcc.dg/tree-ssa/loop-15.c: Remove XFAIL.
        * gcc.dg/tree-ssa/pr23744.c: Change search pattern.
        * gcc.dg/wrapped-binop-simplify.c: New test.

From-SVN: r274925

This patch allows users of the substitute_and_fold_engine to
enable folding all statements.  It is now enabled for VRP which
is needed for the match.pd pattern in patch 2/2.

The loop versioning pass was missing one case when
deconstructing addresses that would only be triggered after
this patch for me:
It could handle addition and subsequent convert/nop but not
a convert/nop directly.  This would cause the hash to be
calculated differently and, in turn, cause the pass to miss
a versioning opportunity.  Fixed this by adding the missing
case.

--

gcc/ChangeLog:

2019-08-26  Robin Dapp  <rdapp@linux.ibm.com>

        * gimple-loop-versioning.cc (loop_versioning::record_address_fragment):
        Add nop_convert case.
        * tree-ssa-propagate.c (substitute_and_fold_dom_walker::before_dom_children):
        Fold all statements if requested.
        * tree-ssa-propagate.h (class substitute_and_fold_engine):
        Allow to fold all statements.
        * tree-vrp.c (class vrp_folder):
        Let substitute_and_fold_engine fold all statements.

From-SVN: r274923

re PR c/91526 (Unnecessary SSE and other instructions generated when compiling in C mode (vs. C++ mode))

2019-08-26  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91526
	* passes.def: Note that after late FRE we do TODO_update_address_taken.
	* tree-ssa-sccvn.c (pass_fre::execute): In late mode schedule
	TODO_update_address_taken.

From-SVN: r274922

gcc/testsuite/ChangeLog:

	gcc.target/riscv/li.c: New test.

From-SVN: r274920

From-SVN: r274919

	* config/i386/gmm_malloc.h: Only use <errno.h> and errno if
	__STDC_HOSTED__.

From-SVN: r274915