PR tree-optimization/84503
	* gimple-ssa-store-merging.c (merged_store_group::merge_into): Compute
	width as info->bitpos + info->bitsize - start.
	(merged_store_group::merge_overlapping): Simplify width computation.
	(check_no_overlap): New function.
	(imm_store_chain_info::try_coalesce_bswap): Compute expected
	start + width and last_order of the group, fail if check_no_overlap
	fails.
	(imm_store_chain_info::coalesce_immediate_stores): Don't merge info
	to group if check_no_overlap fails.

	* gcc.dg/pr84503-1.c: New test.
	* gcc.dg/pr84503-2.c: New test.

From-SVN: r257891

This removes the (usually empty) constraint arguments to define_expand,
define_split, and define_peephole2: this argument is meaningless and
just noise.


	* config/rs6000/altivec.md: Delete contraint arguments to
	define_expand, define_split, and define_peephole2, and in
	define_insn_and_split if always unused.
	* config/rs6000/darwin.md: Ditto.
	* config/rs6000/dfp.md: Ditto.
	* config/rs6000/rs6000.md: Ditto.
	* config/rs6000/sync.md: Ditto.
	* config/rs6000/vector.md: Ditto.
	* config/rs6000/vsx.md: Ditto.

From-SVN: r257890

This patch changes the remaining cases in our machine description files
to use brace blocks instead of double-quoted strings as the output
control string.  This increases readability by making the blocks look
more like normal C code, mostly because backslash quoting is no longer
needed.  It also removes such quoting where it was still there (usually
harmless but always confusing). and it writes "\n\t" as "\;" in one
place where we didn't already.


	* config/rs6000/altivec.md: Write output control strings as braced
	blocks instead of double-quoted strings.
	* config/rs6000/darwin.md: Ditto.
	* config/rs6000/rs6000.md: Ditto.
	* config/rs6000/vector.md: Ditto.
	* config/rs6000/vsx.md: Ditto.

From-SVN: r257889

From-SVN: r257887

	* attribs.c (build_type_attribute_qual_variant): Remove assert.

From-SVN: r257883

From-SVN: r257878

	PR c/84229
	* ipa-cp.c (determine_versionability): Do not version functions caling
	va_arg_pack.

From-SVN: r257877

	* error.c (find_typenames_r): Also stop on EXPR_PACK_EXPANSION.

From-SVN: r257875

2018-02-21  Martin Liska  <mliska@suse.cz>

	PR driver/83193
	* config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch):
	Add "native" as a possible value.
	* config/aarch64/aarch64.h (HAVE_LOCAL_CPU_DETECT):  Define
	the macro when native cpu detection is available.

From-SVN: r257874

2018-02-21  Martin Liska  <mliska@suse.cz>

	PR driver/83193
	* common/config/arm/arm-common.c (arm_print_hint_for_arch_option):
	Add "native" as a possible value.
	* config/arm/arm.h (HAVE_LOCAL_CPU_DETECT): Define the macro
	when native cpu detection is available.

From-SVN: r257873

	PR tree-optimization/84478
	* gimple-fold.h (get_range_strlen): Add a bool argument defaulted to
	false.
	* gimple-fold.c (get_range_strlen): Make minlen const and assume it
	can't be NULL.  Change FUZZY from bool to int, for 1 add PHI/COND_EXPR
	support which is conservatively correct, for 2 only stay conservative
	for maxlen.  Formatting and comment capitalization fixes.  Add STRICT
	argument to the 2 argument get_range_strlen, adjust 6 arg
	get_range_strlen caller and clear minmaxlen[0] and [1] if it returned
	false.
	(get_maxval_strlen): Adjust 6 arg get_range_strlen caller.
	(gimple_fold_builtin_strlen): Pass true as last argument to
	get_range_strlen.

	* gcc.c-torture/execute/pr84478.c: New test.

Co-Authored-By: Martin Sebor <msebor@redhat.com>

From-SVN: r257870

2018-02-21  Martin Liska  <mliska@suse.cz>

	* c.opt (Wcatch-value=): Add IntegerRange.

From-SVN: r257869

From-SVN: r257868

libgcc/
2018-02-20  Max Filippov  <jcmvbkbc@gmail.com>

	* config/xtensa/ieee754-df.S (__adddf3_aux): Add
	.literal_position directive.
	* config/xtensa/ieee754-sf.S (__addsf3_aux): Likewise.

From-SVN: r257862

2018-02-20  François Dumont  <fdumont@gcc.gnu.org>

	* include/ext/aligned_buffer.h [_GLIBCXX_INLINE_VERSION]
	(template<> __aligned_buffer): Define as __aligned_membuf alias.

From-SVN: r257861

gcc/ChangeLog:

	PR middle-end/84095
	* gimple-ssa-warn-restrict.c (builtin_memref::extend_offset_range): New.
	(builtin_memref::set_base_and_offset): Same.  Handle inner references.
	(builtin_memref::builtin_memref): Factor out parts into
	set_base_and_offset and call it.

gcc/testsuite/ChangeLog:

	PR middle-end/84095
	* c-c++-common/Warray-bounds-3.c: Adjust text of expected warnings.
	* c-c++-common/Wrestrict.c: Same.
	* gcc.dg/Wrestrict-6.c: Same.
	* gcc.dg/Warray-bounds-27.c: New test.
	* gcc.dg/Wrestrict-8.c: New test.
	* gcc.dg/Wrestrict-9.c: New test.
	* gcc.dg/pr84095.c: New test.

From-SVN: r257860

2018-02-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

	* gfortran.dg/structure_constructor_14.f90: Adjust STOP number.

From-SVN: r257859

re PR target/84406 ([MSP430] ICE on valid code in find_widening_optab_handler_and_mode, at optabs-query.c:476)

	PR middle-end/84406
	* optabs-query.c (find_widening_optab_handler_and_mode): If from_mode
	is a scalar_int_mode, assert that to_mode is a scalar_int_mode with
	greater precision.  If to_mode is a MODE_PARTIAL_INT, stop the
	search at the associated MODE_INT.

From-SVN: r257858

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c (format_integer): Query EVRP range analyzer
	for range data rather than using global data.

	* gcc.dg/pr81592.c: New test.
	* gcc.dg/pr82123.c: New test.

From-SVN: r257857

2018-02-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/48890
	PR fortran/83823
	* primary.c (gfc_convert_to_structure_constructor):
	For a constant string constructor, make sure the length
	is correct.

2018-02-20  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/48890
	PR fortran/83823
	* gfortran.dg/structure_constructor_14.f90: New test.

From-SVN: r257856

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c (get_int_range): Query EVRP range analyzer for
	range data rather than using global data.

From-SVN: r257855

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c (get_int_range): Accept vr_values parameter
	pass it to children as needed.
	(struct directive::fmtresult): Similarly.
	(struct directive::set_width): Similarly.
	(struct directive::set_precision): Similarly.
	(format_integer, format_directive, parse_directive): Similarly.
	(format_none): Accept unnamed vr_values parameter.
	(format_percent, format_floating, format_character): Similarly.
	(format_string, format_plain): Similarly.

From-SVN: r257854

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c (sprintf_dom_walker::handle_gimple_call): Query
	the EVRP range analyzer for range data rather than using global data.

From-SVN: r257853

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-sprintf.c: Include alloc-pool.h, vr-values.h and
	gimple-ssa-evrp-analyze.h
	(class sprintf_dom_walker): Add after_dom_children member function.
	Add evrp_range_analyzer member.
	(sprintf_dom_walker::before_dom_children): Call into the EVRP
	range analyzer as needed.
	(sprintf_dom_walker::after_dom_children): New member function.

	* gcc.dg/builtin-unreachable-6.c: Turn off VRP.

From-SVN: r257852

	PR middle-end/82123
	PR tree-optimization/81592
	PR middle-end/79257
	* gimple-ssa-evrp-analyze.c (evrp_range_analyzer::enter): Do nothing
	if not optimizing.
	(evrp_range_analyzer::record_ranges_from_stmt): Likewise.
	(evrp_range_analyzer::pop_to_marker): Likewise.

From-SVN: r257851

	PR c++/84488
	* g++.dg/warn/Wunused-var-30.C: New test.

From-SVN: r257850

Removing the file.

From-SVN: r257849

    
    Let a fast syscall return be a preemption point.  This helps with
    tight loops that make system calls, as in BenchmarkSyscallExcessWork.
    
    Reviewed-on: https://go-review.googlesource.com/94895

From-SVN: r257848

expand_call_mem_ref checks for TARGET_MEM_REFs that have compatible
type, but it didn't then go on to install the specific type we need,
which might have different alignment due to:

  if (TYPE_ALIGN (type) != align)
    type = build_aligned_type (type, align);

This was causing masked stores to be incorrectly marked as
aligned on AVX512.

2018-02-20  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/84419
	* internal-fn.c (expand_call_mem_ref): Create a TARGET_MEM_REF
	with the required type if its current type is compatible but
	different.

gcc/testsuite/
	PR tree-optimization/84419
	* gcc.dg/vect/pr84419.c: New test.

From-SVN: r257847

	PR middle-end/82004
	* match.pd (pow(C,x) -> exp(log(C)*x)): Delay all folding until
	after vectorization.

	* gfortran.dg/pr82004.f90: New test.

From-SVN: r257846

    
    Aliases are supposed to be identical to the type being aliased, so
    questions about type compatibility need to always ignore aliases,
    except for error messages involving the type name.
    
    The test case for this is https://golang.org/cl/94995.
    
    Fixes golang/go#23912
    
    Reviewed-on: https://go-review.googlesource.com/94996

From-SVN: r257845

2018-02-20  Martin Liska  <mliska@suse.cz>

	PR driver/83193
	* config/aarch64/aarch64.c (aarch64_print_hint_for_core_or_arch): Print
	possible values if we don't have a hint.

From-SVN: r257844

The C++ frontend generates a break that results in the fallthrough
warning misfiring in nested switch blocks where cases in the inner
switch block return, rendering the break pointless.  The fallthrough
detection in finish_break_stmt does not work either because the
condition is encoded as an IF_STMT and not a COND_EXPR.

Fix this by adding a condition for IF_STMT in the
langhooks.block_may_fallthru for C++.  Fix tested on x86_64.

gcc/cp
        * cp-objcp-common.c (cxx_block_may_fallthru): Add case for
	        IF_STMT.

gcc/testsuite
        * g++.dg/nested-switch.C: New test case.

From-SVN: r257843

2018-02-20  Martin Liska  <mliska@suse.cz>

	PR c/84310
	PR target/79747
	* final.c (shorten_branches): Build align_tab array with one
	more element.
	* opts.c (finish_options): Add alignment option limit check.
	(MAX_CODE_ALIGN): Likewise.
	(MAX_CODE_ALIGN_VALUE): Likewise.
	* doc/invoke.texi: Document maximum allowed option value for
	all -falign-* options.
2018-02-20  Martin Liska  <mliska@suse.cz>

	PR c/84310
	PR target/79747
	* gcc.target/i386/pr84310.c: New test.
	* gcc.target/i386/pr84310-2.c: Likewise.

From-SVN: r257842

/cp
2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84446
	* parser.c (cp_parser_init_declarator): Don't call start_lambda_scope
	on error_mark_node.

/testsuite
2018-02-20  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84446
	* g++.dg/cpp0x/lambda/lambda-ice27.C: New.

From-SVN: r257841

	PR c++/84445
	* class.c (fixed_type_or_null) <case CALL_EXPR>: Only test
	TREE_HAS_CONSTRUCTOR if instance is not an internal function call.

	* g++.dg/cpp1z/launder7.C: New test.

From-SVN: r257840

	PR c++/84449
	* tree.c (bot_manip): If build_cplus_new or break_out_target_exprs
	returns error_mark_node, return it immediately.
	(break_out_target_exprs): If cp_walk_tree with bot_manip returns
	error_mark_node, return error_mark_node.

	* g++.dg/cpp0x/constexpr-84449.C: New test.

From-SVN: r257839

	PR c++/84455
	* pt.c (tsubst_lambda_expr): If not nested, increment temporarily
	function_depth to avoid GC during finish_lambda_function.

	* g++.dg/cpp0x/lambda/lambda-ice26.C: New test.

From-SVN: r257838

	* lambda.c (build_capture_proxy): Handle reference refs.

From-SVN: r257836

From-SVN: r257835