* tree-sra.c (build_reconstructed_reference): Return NULL_TREE instead
	of NULL.  Add guard for broken VIEW_CONVERT_EXPRs.

From-SVN: r274576

gcc/ChangeLog:

	* tree.def (TYPE_SIZE): Clarify.
	* tree.h (TYPE_SIZE, TYPE_SIZE_UNIT, DECL_SIZE): Add comments.

From-SVN: r274575

re PR testsuite/91458 (FAIL: g++.dg/tree-ssa/pr19807.C  -std=gnu++98  scan-tree-dump-times optimized "&MEM\\\\[\\\\(void .\\\\)&a \\\\+ 8B\\\\]" 3)

PR testsuite/91458

gcc/testsuite/ChangeLog:

	* g++.dg/tree-ssa/pr19807.C: Use the same search pattern
	unconditionally (correcting r272199, PR middle-end/90676).

From-SVN: r274574

2019-08-16  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        PR tree-optimization/91109
        * lra-int.h (lra_need_for_scratch_reg_p): Declare.
        * lra.c (lra): Use lra_need_for_scratch_reg_p.
        * lra-spills.c (lra_need_for_scratch_reg_p): New function.

From-SVN: r274573

	* config/i386/mmx.md (mmxdoublemode): New mode attribute.
	(mmx_uavg<mode>3): Macroize expaner from mmx_uavgv8qi3 and
	mmx_uavgv4hi3 using MMXMODE12 mode iterator.
	(uavg<mode>3_ceil): New expander.
	* config/i386/sse.md (uavg<mode>3_ceil): Use ssedoublemode
	mode iterator when creating CONST1_RTX.
	(<sse2_avx2>_uavg<mode>3<mask_name>): Ditto.
	(*<sse2_avx2>_uavg<mode>3<mask_name>): Use ssedoublemode
	mode iterator for const1_operand predicate.

From-SVN: r274572

2019-08-16  Richard Biener  <rguenther@suse.de>

	* tree-scalar-evolution.c (follow_ssa_edge_expr): Declare.
	(follow_ssa_edge_binary): Call follow_ssa_edge_expr instead of
	follow_ssa_edge.
	(follow_ssa_edge_in_condition_phi_branch): Likewise.
	(analyze_evolution_in_loop): Likewise.
	(follow_ssa_edge, follow_ssa_edge_in_rhs): Inline into ...
	(follow_ssa_edge_expr): ... here.  Refactor code.

From-SVN: r274571

2019-08-16  Richard Biener  <rguenther@suse.de>

	PR target/91469
	* config/i386/i386-features.c
	(general_scalar_chain::replace_with_subreg): Stop at memory operands.

	* gcc.target/i386/pr91469-1.c: New testcase.
	* gcc.target/i386/pr91469-2.c: Likewise.

From-SVN: r274570

	* config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.

From-SVN: r274569

If a variable with an automatic attribute appears in an
equivalence statement the storage should be allocated on the
stack.

Note: most of this patch was provided by Jeff Law  <law@redhat.com>.

From-SVN: r274565

I'm trying to add a define_subst use in the arm backend but am getting many build errors complaining about:
`set_attr_alternative' is unsupported by `define_subst'

Looking at the gensupport.c code it iterates over all define_insns and errors if any of them have set_attr_alternative.

The usecase I'm targetting doesn't involve patterns with set_attr_alternative, so I would like to make the define_subst handling
more robust to only error out if the define_subst is actually attempted on a set_attr_alternative.

This patch produces the error only if the set_attr_alternative attr matches the subst name.
This allows a build of the arm backend with a define_subst usage to succeed.

	PR other/91255
	* gensupport.c (has_subst_attribute): Error out on set_attr_alternative
	only if subst_name matches curr_attr string.

From-SVN: r274564

tree-ssa-forwprop.c (simplify_builtin_call): Do not remove stmt at gsi_p, instead replace it with a NOP removed later.

2019-08-16  Richard Biener  <rguenther@suse.de>

	* tree-ssa-forwprop.c (simplify_builtin_call): Do not remove
	stmt at gsi_p, instead replace it with a NOP removed later.
	(pass_forwprop::execute): Fully propagate lattice, DCE stmts
	that became dead because of that.

	fortran/
	* trans-intrinsic.c (gfc_conv_intrinsic_findloc): Initialize
	forward_branch to avoid bogus uninitialized warning.

	* gcc.dg/tree-ssa/forwprop-31.c: Adjust.

From-SVN: r274563

2019-08-16  Martin Liska  <mliska@suse.cz>

	PR ipa/91447
	* g++.dg/ipa/ipa-icf-4.C: Add -missed for target that
	don't have aliases.

From-SVN: r274562

From-SVN: r274561

Testcases that require support for trampolines should be marked as
such; gcc.target/i386/pr85044.c was missing it.  Fixed.


for  gcc/testsuite/ChangeLog

	* gcc.target/i386/pr85044.c: Require support for trampolines.

From-SVN: r274560

gcc.target/i386/asm-4.c uses amd64's natural PC-relative addressing
mode on a single platform, using the 32-bit absolute addressing mode
elsewhere.  There's no point in giving up amd64's natural addressing
mode and insisting on the 32-bit one when we're targeting amd64, and
having to make explicit exceptions for systems where that's found not
to work for whatever reason.  If we just use the best-suited way to
take the address of a function behind the compiler's back on each
target variant, we're less likely to hit unexpected failures.


for  gcc/testsuite/ChangeLog

	* gcc.target/i386/asm-4.c: Use amd64 natural addressing mode
	on all __LP64__ targets.

From-SVN: r274559

Since alloca.h is not ISO C, most of our alloca-using tests seem to
rely on __builtin_alloca instead of including the header and calling
alloca.  This patch extends this practice to some of the exceptions I
found in gcc.target, marking them as requiring a functional alloca
while at that.


for  gcc/testsuite/ChangeLog

	* gcc.target/arc/interrupt-6.c: Use __builtin_alloca, require
	effective target support for alloca, drop include of alloca.h.
	* gcc.target/i386/pr80969-3.c: Likewise.
	* gcc.target/sparc/setjmp-1.c: Likewise.
	* gcc.target/x86_64/abi/ms-sysv/gen.cc: Likewise.
	* gcc.target/x86_64/abi/ms-sysv/ms-sysv.c: Likewise.

From-SVN: r274558

The regexp that checks that -lgcov is linked in when --coverage is
passed to the compiler driver requires the command line to match
'/collect2'.  Some of our targets don't match that, but they match /ld
or ${target_alias}-ld depending on the testing scenario, so I'd like
to tweak the test to match those as well.


for  gcc/testsuite/ChangeLog

	* gcc.misc-tests/options.exp: Match /ld and -ld besides
	/collect2.

From-SVN: r274557

Oops, I forgot to update the MAINTAINERS file a couple of months ago,
when the address there stopped working.

Honestly, I haven't really had much involvement with the frv, mn10300
or sh ports for almost 15 years, so I wouldn't mind if someone else
stepped up and took over, but until someone does, I don't mind
reviewing the occasional patch, so it's best if it can reach me ;-)


for  ChangeLog

	* MAINTAINERS: aoliva from @redhat.com to @gcc.gnu.org.

From-SVN: r274556

From-SVN: r274555

2019-08-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91443
	* frontend-passes.c (check_externals_expr): New function.
	(check_externals_code): New function.
	(gfc_check_externals): New function.
	* gfortran.h (debug): Add prototypes for gfc_symbol * and
	gfc_expr *.
	(gfc_check_externals): Add prototype.
	* interface.c (compare_actual_formal): Do not complain about
	alternate returns if the formal argument is optional.
	(gfc_procedure_use): Handle cases when an error has been issued
	previously.  Break long line.
	* parse.c (gfc_parse_file): Call gfc_check_externals for all
	external procedures.
	* resolve.c (resolve_global_procedure): Remove checking of
	argument list.

2019-08-15  Thomas Koenig  <tkoenig@gcc.gnu.org>

	PR fortran/91443
	* gfortran.dg/argument_checking_19.f90: New test.
	* gfortran.dg/altreturn_10.f90: Change dg-warning to dg-error.
	* gfortran.dg/dec_union_11.f90: Add -std=legacy.
	* gfortran.dg/hollerith8.f90: Likewise. Remove warning for
	Hollerith constant.
	* gfortran.dg/integer_exponentiation_2.f90: New subroutine gee_i8;
	use it to avoid type mismatches.
	* gfortran.dg/pr41011.f: Add -std=legacy.
	* gfortran.dg/whole_file_1.f90: Change warnings to errors.
	* gfortran.dg/whole_file_2.f90: Likewise.

From-SVN: r274551

My previous patch for 64372 was incomplete: it only stopped making the
non-throw argument into an rvalue, lvalue_kind still considered the ?:
expression to be an rvalue, leaving us worse than before.

	PR c++/64372, DR 1560 - Gratuitous lvalue-to-rvalue conversion in ?:
	* tree.c (lvalue_kind): Handle throw in one arm.
	* typeck.c (rationalize_conditional_expr): Likewise.
	(cp_build_modify_expr): Likewise.

From-SVN: r274550

processor_costs has costs of RTL expressions with pseudo registers and
and costs of hard register moves:

1. Costs of RTL expressions are used to generate the most efficient RTL
operations with pseudo registers.

2. Costs of hard register moves are used by register allocator to
decide how to allocate and move hard registers.

Since relative costs of pseudo register load and store versus pseudo
register moves in RTL expressions can be different from relative costs
of hard registers, we should separate costs of RTL expressions with
pseudo registers from costs of hard registers so that register allocator
and RTL expressions can be improved independently.

This patch moves costs of hard register moves to the new hard_register
field and duplicates costs of moves which are also used for costs of RTL
expressions.

	PR target/90878
	* config/i386/i386.c (inline_memory_move_cost): Use hard_register
	for costs of hard register moves.
	(ix86_register_move_cost): Likewise.
	* config/i386/i386.h (processor_costs): Move costs of hard
	register moves to hard_register.  Add int_load, int_store,
	xmm_move, ymm_move, zmm_move, sse_to_integer, integer_to_sse,
	sse_load, sse_store, sse_unaligned_load and sse_unaligned_store
	for costs of RTL expressions.
	* config/i386/x86-tune-costs.h: Move costs of hard register
	moves to hard_register.  Duplicate int_load, int_store,
	xmm_move, ymm_move, zmm_move, sse_to_integer, integer_to_sse,
	sse_load, sse_store for costs of RTL expressions.

From-SVN: r274543

In C++17 a function can return a prvalue of a type that cannot be moved
or copied. The current implementation of std::is_invocable_r uses
std::is_convertible to test the conversion to R required by INVOKE<R>.
That fails for non-copyable prvalues, because std::is_convertible is
defined in terms of std::declval which uses std::add_rvalue_reference.
In C++17 conversion from R to R involves no copies and so is not the
same as conversion from R&& to R.

This commit changes std::is_invocable_r to check the conversion without
using std::is_convertible.

std::function also contains a similar check using std::is_convertible,
which can be fixed by simply reusing std::is_invocable_r (but because
std::is_invocable_r is not defined for C++11 it uses the underlying
std::__is_invocable_impl trait directly).

	PR libstdc++/91456
	* include/bits/std_function.h (__check_func_return_type): Remove.
	(function::_Callable): Use std::__is_invocable_impl instead of
	__check_func_return_type.
	* include/std/type_traits (__is_invocable_impl): Add another defaulted
	template parameter. Define a separate partial specialization for
	INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
	with a check that models delayed temporary materialization.
	* testsuite/20_util/function/91456.cc: New test.
	* testsuite/20_util/is_invocable/91456.cc: New test.

From-SVN: r274542

2019-08-15  Martin Liska  <mliska@suse.cz>

	* LOCAL_PATCHES: Add r274540

From-SVN: r274541

2019-08-15  Martin Liska  <mliska@suse.cz>

	* tsan/tsan_rtl_ppc64.S: Reapply.

From-SVN: r274540

TARGET_SETUP_INCOMING_VARARG_BOUNDS seems to be an unused vestige of the
MPX support.

2019-08-15  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* target.def (setup_incoming_vararg_bounds): Remove.
	* doc/tm.texi.in (TARGET_SETUP_INCOMING_VARARG_BOUNDS): Remove.
	* doc/tm.texi: Regenerate.
	* targhooks.c (default_setup_incoming_vararg_bounds): Delete.
	* targhooks.h (default_setup_incoming_vararg_bounds): Likewise.
	* config/i386/i386.c (ix86_setup_incoming_vararg_bounds): Likewise.
	(TARGET_SETUP_INCOMING_VARARG_BOUNDS): Likewise.

From-SVN: r274539

If a target does not support libbacktrace, it might still the include
for $(top_srcdir).

Regenerate the built files using automake-1.15.1

libsanitizer/

2019-08-15  Iain Sandoe  <iain@sandoe.co.uk>

	PR bootstrap/91455
	* Makefile.in: Regenerated.
	* aclocal.m4: Likewise.
	* asan/Makefile.in: Likewise.
	* configure: Likewise.
	* interception/Makefile.in: Likewise.
	* libbacktrace/Makefile.in: Likewise.
	* lsan/Makefile.in: Likewise.
	* sanitizer_common/Makefile.am: Include top_srcdir unconditionally.
	* sanitizer_common/Makefile.in: Regenerated.
	* tsan/Makefile.in: Likewise.
	* ubsan/Makefile.in: Likewise.

From-SVN: r274538

2019-08-15  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	MSP430: Fix lines over 80 characters long in
	config/msp430/*.{c,h} files

	* config/msp430/driver-msp430.c (msp430_select_cpu): Fix format
	specifier in string.
	(msp430_select_hwmult_lib): Split line more than 80 characters long.
	* config/msp430/msp430-devices.c (msp430_extract_mcu_data): Remove
	redundant old comment.
	* config/msp430/msp430-protos.h (msp430_output_aligned_decl_common):
	Split line more than 80 characters long.
	* config/msp430/msp430.c (msp430_option_override): Likewise.
	(msp430_return_in_memory): Likewise.
	(msp430_gimplify_va_arg_expr): Likewise.
	(TARGET_ADDR_SPACE_LEGITIMATE_ADDRESS_P): Likewise.
	(msp430_legitimate_constant): Likewise.
	(TARGET_ALLOCATE_STACK_SLOTS_FOR_ARGS): Likewise.
	(msp430_attr): Likewise.
	(msp430_data_attr): Likewise.
	(msp430_start_function): Likewise.
	(gen_prefix): Likewise.
	(msp430_init_sections): Likewise.
	(msp430_select_section): Likewise.
	(msp430_function_section): Likewise.
	(msp430_unique_section): Likewise.
	(msp430_output_aligned_decl_common): Likewise.
	(msp430_do_not_relax_short_jumps): Likewise.
	(msp430_init_builtins): Likewise.
	(msp430_expand_delay_cycles): Likewise.
	(msp430_expand_prologue): Likewise.
	(msp430_expand_epilogue): Likewise.
	(msp430_expand_helper): Likewise.
	(msp430_split_movsi): Likewise.
	(msp430_print_operand): Likewise.
	(msp430_return_addr_rtx): Likewise.
	(msp430x_extendhisi): Likewise.
	* config/msp430/msp430.h (STARTFILE_SPEC): Likewise.
	(ASM_SPEC): Likewise.
	Remove very obvious comments.
	(LIB_SPEC): Split line more than 80 characters long.
	(EH_RETURN_HANDLER_RTX): Likewise.
	(HARD_REGNO_CALLER_SAVE_MODE): Likewise.

From-SVN: r274537

2019-08-15  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	MSP430: Fix whitespace errors and incorrect indentation in
	config/msp430/*.{c,h} files

	* config/msp430/driver-msp430.c (msp430_select_cpu): Fix indentation.
	(msp430_select_hwmult_lib): Likewise.
	* config/msp430/msp430-devices.c (parse_devices_csv_1): Likewise.
	(msp430_extract_mcu_data): Likewise.
	(struct t_msp430_mcu_data): Likewise.
	* config/msp430/msp430.c (struct machine_function): Remove whitespace
	before left square bracket.
	(msp430_option_override): Fix indentation.
	(msp430_hard_regno_nregs_with_padding): Likewise.
	(msp430_initial_elimination_offset): Likewise.
	(msp430_special_register_convention_p): Remove whitespace before left
	square bracket and after exclamation mark.
	(msp430_evaluate_arg): Likewise.
	(msp430_callee_copies): Fix indentation.
	(msp430_gimplify_va_arg_expr): Likewise.
	(msp430_function_arg_advance): Remove whitespace before left square
	bracket.
	(reg_ok_for_addr): Likewise.
	(msp430_preserve_reg_p): Likewise.
	(msp430_compute_frame_info): Likewise.
	(msp430_asm_output_addr_const_extra): Add space between function name
	and open parenthesis.
	(has_section_name): Fix indentation.
	(msp430_attr): Remove trailing whitespace.
	(msp430_section_attr): Likewise.
	(msp430_data_attr): Likewise.
	(struct msp430_attribute_table): Fix comment and whitespace.
	(msp430_start_function): Remove whitespace before left square bracket.
	Add space between function name and open parenthesis.
	(msp430_select_section): Remove trailing whitespace.
	(msp430_section_type_flags): Remove trailing whitespace.
	(msp430_unique_section): Remove space before closing parenthesis.
	(msp430_output_aligned_decl_common): Change 8 spaces to a tab.
	(msp430_builtins): Remove whitespace before left square bracket.
	(msp430_init_builtins):	Fix indentation.
	(msp430_expand_prologue): Remove whitespace before left square bracket.
	Remove space before closing parenthesis.
	(msp430_expand_epilogue): Remove whitespace before left square bracket.
	(msp430_split_movsi): Remove space before closing parenthesis.
	(helper_function_name_mappings): Fix indentation.
	(msp430_use_f5_series_hwmult): Fix whitespace.
	(use_32bit_hwmult): Likewise.
	(msp430_no_hwmult): Likewise.
	(msp430_output_labelref): Remove whitespace before left square bracket.
	(msp430_print_operand_raw): Likewise.
	(msp430_print_operand_addr): Likewise.
	(msp430_print_operand): Add two spaces after '.' in comment.
	Fix trailing whitespace.
	(msp430x_extendhisi): Fix indentation.
	* config/msp430/msp430.h (TARGET_CPU_CPP_BUILTINS): Change 8 spaces to
	tab.
	(PC_REGNUM): Likewise.
	(STACK_POINTER_REGNUM): Likewise.
	(CC_REGNUM): Likewise.

From-SVN: r274536

re PR target/91454 (ICE in get_attr_avx_partial_xmm_update, at config/i386/i386.md:1804 since r274481)

2019-08-15  Richard Biener  <rguenther@suse.de>

	PR target/91454
	* config/i386/i386-features.c (gen_gpr_to_xmm_move_src): New
	helper.
	(general_scalar_chain::make_vector_copies): Use it.

From-SVN: r274535

With Concepts, overloads of special member functions can differ in
constraints, and this paper clarifies how that affects class properties: if
a class has a more constrained trivial copy constructor and a less
constrained non-trivial copy constructor, it is still trivially copyable.

	* tree.c (special_memfn_p): New.
	* class.c (add_method): When overloading, hide ineligible special
	member fns.
	(check_methods): Set TYPE_HAS_COMPLEX_* here.
	* decl.c (grok_special_member_properties): Not here.
	* name-lookup.c (push_class_level_binding_1): Move overloaded
	functions case down, accept FUNCTION_DECL as target_decl.

From-SVN: r274534

re PR tree-optimization/91445 (After memset, logical && operator produces false result, optimization level >=O1)

2019-08-15  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/91445
	* gcc.dg/torture/pr91445.c: New testcase.

From-SVN: r274533

2019-08-15  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * function.c (assign_parm_setup_reg): Handle misaligned stack arguments.

From-SVN: r274531

2019-08-15  Martin Liska  <mliska@suse.cz>

	* tree-ssa-dce.c (propagate_necessity): We can't reach now
	operators with no arguments.
	(eliminate_unnecessary_stmts): Likewise here.

From-SVN: r274529

2019-08-15  Richard Biener  <rguenther@suse.de>

	c-family/
	* c-common.c (c_stddef_cpp_builtins): When the GIMPLE FE is
	enabled, define __SIZETYPE__.

	* gcc.dg/pr80170.c: Adjust to use __SIZETYPE__.

From-SVN: r274528

From-SVN: r274527

	* config/i386/i386-features.c (general_scalar_chain::convert_insn)
	<case COMPARE>: Revert 2019-08-14 change.
	(convertible_comparison_p): Revert 2019-08-14 change.  Return false
	for (TARGET_64BIT || mode != DImode).

From-SVN: r274526

From-SVN: r274525

In this PR we were passing an ordinary non-built-in function to
targetm.vectorize.builtin_md_vectorized_function, which is only
supposed to handle BUILT_IN_MD.

2019-08-15  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	PR middle-end/91444
	* tree-vect-stmts.c (vectorizable_call): Check that the function
	is a BUILT_IN_MD function before passing it to
	targetm.vectorize.builtin_md_vectorized_function.

From-SVN: r274524

This patch adds an exported function for testing whether a mode is
an SVE mode.  The ACLE will make more use of it, but there's already
one place that can benefit.

2019-08-15  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* config/aarch64/aarch64-protos.h (aarch64_sve_mode_p): Declare.
	* config/aarch64/aarch64.c (aarch64_sve_mode_p): New function.
	(aarch64_select_early_remat_modes): Use it.

From-SVN: r274523