Introduce a couple of new CET intrinsics for reading and updating a
shadow stack pointer (_get_ssp and _inc_ssp). They replace the existing
_rdssp[d|q] and _incssp[d|q] instrinsics.

	PR target/84239
	* gcc/config/i386/cetintrin.h: Remove _rdssp[d|q] and
	add _get_ssp intrinsics. Remove argument from
	__builtin_ia32_rdssp[d|q].
	* gcc/config/i386/i386-builtin-types.def: Add UINT_FTYPE_VOID.
	* gcc/config/i386/i386-builtin.def: Remove argument from
	__builtin_ia32_rdssp[d|q].
	* gcc/config/i386/i386.c: Use UINT_FTYPE_VOID. Use
	ix86_expand_special_args_builtin for _rdssp[d|q].
	* gcc/config/i386/i386.md: Remove argument from rdssp[si|di] insn.
	Clear register before usage.
	* doc/extend.texi: Remove argument from __builtin_ia32_rdssp[d|q].
	Add documentation for new _get_ssp and _inc_ssp intrinsics.
	* testsuite/gcc.target/i386/cet-intrin-3.c: Use new _get_ssp and
	_inc_ssp intrinsics.
	* testsuite/gcc.target/i386/cet-intrin-4.c: Likewise.
	* testsuite/gcc.target/i386/cet-rdssp-1.c: Remove argument from
	__builtin_ia32_rdssp[d|q].
	* libgcc/config/i386/shadow-stack-unwind.hi (_Unwind_Frames_Extra):
	Use new _get_ssp and _inc_ssp intrinsics.

From-SVN: r257660

2018-02-14  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h (do_auto_deduction (tree, tree, tree)): Remove.
	(do_auto_deduction (tree, tree, tree, tsubst_flags_t,
	auto_deduction_context, tree, int): Add defaults.
	* pt.c (do_auto_deduction (tree, tree, tree)): Remove definition.
	(tsubst_omp_for_iterator): Adjust do_auto_deduction call, forward
	tsubst_flags_t argument.
	* init.c (build_new): Likewise.

From-SVN: r257659

	PR other/82368
	* elf.c (EM_PPC64, EF_PPC64_ABI): Undefine and define.
	(struct elf_ppc64_opd_data): New type.
	(elf_initialize_syminfo): Add opd argument, handle symbols
	pointing into the PowerPC64 ELFv1 .opd section.
	(elf_add): Read .opd section on PowerPC64 ELFv1, pass pointer
	to structure with .opd data to elf_initialize_syminfo.

From-SVN: r257658

object_address_invariant_in_loop_p ignored ARRAY_REF indices on
the basis that:

	  /* Index of the ARRAY_REF was zeroed in analyze_indices, thus we only
	     need to check the stride and the lower bound of the reference.  */

That was true back in 2007 when the code was added:

static void
dr_analyze_indices (struct data_reference *dr, struct loop *nest)
{
  [...]
  while (handled_component_p (aref))
    {
      if (TREE_CODE (aref) == ARRAY_REF)
        {
          op = TREE_OPERAND (aref, 1);
          access_fn = analyze_scalar_evolution (loop, op);
          access_fn = resolve_mixers (nest, access_fn);
          VEC_safe_push (tree, heap, access_fns, access_fn);

          TREE_OPERAND (aref, 1) = build_int_cst (TREE_TYPE (op), 0);
        }

      aref = TREE_OPERAND (aref, 0);
    }

but the assignment was removed a few years ago.  We were therefore
treating "two->arr[i]" and "three->arr[i]" as loop invariant.

2018-02-14  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/84357
	* tree-data-ref.c (object_address_invariant_in_loop_p): Check
	operand 1 of an ARRAY_REF too.

gcc/testsuite/
	PR tree-optimization/84357
	* gcc.dg/vect/pr84357.c: New test.

From-SVN: r257657

gcc/
	PR target/83831
	* config/rx/rx-protos.h (rx_reg_dead_or_unused_after_insn,
	rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
	declarations.
	(set_of_reg): New struct.
	(rx_find_set_of_reg, rx_find_use_of_reg): New functions.
	* config/rx/rx.c (rx_reg_dead_or_unused_after_insn,
	rx_copy_reg_dead_or_unused_notes, rx_fuse_in_memory_bitop): New
	functions.
	* config/rx/rx.md (andsi3, iorsi3, xorsi3): Convert to insn_and_split.
	Split into bitclr, bitset, bitinvert patterns if appropriate.
	(*bitset, *bitinvert, *bitclr): Convert to named insn_and_split and
	use rx_fuse_in_memory_bitop.
	(*bitset_in_memory, *bitinvert_in_memory, *bitclr_in_memory): Convert
	to named insn, correct maximum insn length.

gcc/testsuite/
	PR target/83831
	* gcc.target/rx/pr83831.c: New tests.

From-SVN: r257655

	PR fortran/84313
	* testsuite/libgomp.fortran/threadprivate4.f90: Add
	-std=f2003 -fall-intrinsics into dg-additional-options.

From-SVN: r257654

2018-02-14  Jozef Lawrynowicz <jozefl.gcc@gmail.com>

	PR target/79242
	* machmode.def: Define a complex mode for PARTIAL_INT.
	* genmodes.c (complex_class): Return MODE_COMPLEX_INT for
	MODE_PARTIAL_INT.
	* doc/rtl.texi: Document CSPImode.
	* config/msp430/msp430.c (msp430_hard_regno_nregs): Add CPSImode
	handling.
	(msp430_hard_regno_nregs_with_padding): Likewise.

	PR target/79242
	* gcc.target/msp430/pr79242.c: New test.

From-SVN: r257653

From-SVN: r257651

	PR target/84372
	* gcc.target/powerpc/lvsl-lvsr.c: Also match lxv when compiling
	with -mcpu=power9.

From-SVN: r257648

gcc/
	PR target/84279
	* config/rs6000/rs6000.c (mem_operand_gpr): Disallow altivec addresses.

gcc/testsuite/
	PR target/84279
	* g++.dg/pr84279.C: New test.

From-SVN: r257647

From-SVN: r257646

From-SVN: r257645

If there is a LOG_LINK between two insns, this means those two insns
can be combined, as far as dataflow is concerned.  There never should
be a LOG_LINK between two unrelated insns.  If there is one, combine
will try to combine the insns without doing all the needed checks if
the earlier destination is used before the later insn, etc.

Unfortunately we do not update the LOG_LINKs correctly in some cases.
This patch fixes at least some of those cases.


	PR rtl-optimization/84169
	* combine.c (try_combine): New variable split_i2i3.  Set it to true if
	we generated a parallel as new i3 and we split that to new i2 and i3
	instructions.  Handle split_i2i3 similar to swap_i2i3: scan the
	LOG_LINKs of i3 to see which of those need to link to i2 now.  Link
	those to i2, not i1.  Partially rewrite this scan code.

gcc/testsuite/
	PR rtl-optimization/84169
	* gcc.c-torture/execute/pr84169.c: New.

From-SVN: r257644

re PR testsuite/84370 (Invalid option used in test case gcc.target/powerpc/builtins-3-p9-runnable.c)

	PR target/84370
	* gcc.target/powerpc/builtins-3-p9-runnable.c: Remove deprecated option.

From-SVN: r257642

	PR target/84365
	* gcc.target/powerpc/altivec-7-le.c: Also match lxv when compiling
	with -mcpu=power9.

From-SVN: r257641

	PR c++/84364
	* typeck.c (check_return_expr): Don't emit -Weffc++ warning
	about return other than *this in assignment operators if
	retval is type dependent expression.

	* g++.dg/warn/effc4.C: New test.

From-SVN: r257640

From-SVN: r257639

/cp
2018-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84333
	* call.c (build_conditional_expr_1): Use cp_save_expr instead of
	save_expr for the G++ extension.

/testsuite
2018-02-13  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84333
	* g++.dg/template/sizeof16.C: New.
	* g++.dg/template/sizeof17.C: Likewise.

From-SVN: r257638

    
    They aren't needed, and could potentially cause unlikely symbol name
    collisions.  Also, the runtime package's reference to main could cause
    the runtime package to define main.main..f, which could also be
    defined in the main package if it does something like fmt.Print(main).
    That will normally work but will fail with a multiple symbol
    definition error when using -static-libgo.
    
    Reviewed-on: https://go-review.googlesource.com/93656

From-SVN: r257637

2018-02-13  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/84313
	* symbol.c (check_conflict): Reject procedure pointers in common blocks.


2018-02-13  Janus Weil  <janus@gcc.gnu.org>

	PR fortran/84313
	* gfortran.dg/proc_ptr_common_1.f90: Fix invalid test case,
	add necessary compiler options.
	* gfortran.dg/proc_ptr_common_2.f90: Add missing error message.

From-SVN: r257636

re PR c/82210 (Having _Alignas in a struct with VLAs causes writing to one array to overwrite another)

	PR c/82210
	* stor-layout.c (place_field): For variable length fields, adjust
	offset_align afterwards not just based on the field's alignment,
	but also on the size.

	* gcc.c-torture/execute/pr82210.c: New test.

From-SVN: r257635

	PR middle-end/84309
	* match.pd (pow(C,x) -> exp(log(C)*x)): Use exp2s and log2s instead
	of exps and logs in the use_exp2 case.

	* gcc.dg/pr84309-2.c: New test.

From-SVN: r257634

2018-02-13  Jeff Law  <law@redhat.com>

 	* config/rl/rl78.c (rl78_attribute_table): Fix terminator and
	entry for "vector".

From-SVN: r257633

	* config/rl78/rl78.c (rl78_handle_func_attribute): Mark
	ARGS as unused.

From-SVN: r257632

	* common.opt (gas-loc-support, gas-locview-support): New.
	(ginline-points, ginternal-reset-location-views): New.
	* doc/invoke.texi: Document them.  Use @itemx where intended.
	(gvariable-location-views): Adjust.
	* target.def (reset_location_view): New.
	* doc/tm.texi.in (DWARF2_ASM_VIEW_DEBUG_INFO): New.
	(TARGET_RESET_LOCATION_VIEW): New.
	* doc/tm.texi: Rebuilt.
	* dwarf2out.c (dwarf2out_default_as_loc_support): New.
	(dwarf2out_default_as_locview_support): New.
	(output_asm_line_debug_info): Use option variables.
	(dwarf2out_maybe_output_loclist_view_pair): Likewise.
	(output_loc_list): Likewise.
	(add_high_low_attributes): Check option variables.
	Don't output entry view attribute in strict mode.
	(gen_inlined_subroutine_die): Check option variables.
	(dwarf2out_inline_entry): Likewise.
	(init_sections_and_labels): Likewise.
	(dwarf2out_early_finish): Likewise.
	(maybe_reset_location_view): New, from...
	(dwarf2out_var_location): ... here.  Call it.
	* debug.h (dwarf2out_default_as_loc_support): Declare.
	(dwarf2out_default_as_locview_support): Declare.
	* hooks.c (hook_int_rtx_insn_0): New.
	* hooks.h (hook_int_rtx_insn_0): Declare.
	* toplev.c (process_options): Take -gas-loc-support and
	-gas-locview-support from dwarf2out.  Enable
	-gvariable-location-views by default only with locview
	assembler support.  Enable -ginternal-reset-location-views by
	default only if the target defines the corresponding hook.
	Enable -ginline-points by default if location views are
	enabled; force it disabled if statement frontiers are
	disabled.
	* tree-inline.c (expand_call_inline): Check option variables.
	* tree-ssa-live.c (remove_unused_scope_block_p): Likewise.

From-SVN: r257631

	* pt.c (determine_specialization): Check uses_template_parms.

From-SVN: r257630

2018-02-12  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/
	PR tree-optimization/84321
	* tree-vrp.c (intersect_range_with_nonzero_bits): Fix VR_ANTI_RANGE
	handling.  Also check whether the anti-range contains any values
	that satisfy the mask; switch to a VR_RANGE if not.

gcc/testsuite/
	PR tree-optimization/84321
	* gcc.dg/pr84321.c: New test.

From-SVN: r257629

2018-02-13  Vladimir Makarov  <vmakarov@redhat.com>

	PR target/84359
	* gcc.target/i386/57193.c: Add -march=x86-64.

From-SVN: r257628

	* pt.c (find_parameter_packs_r): Also look at explicit captures.
	(check_for_bare_parameter_packs): Check current_class_type for
	lambda context.
	(extract_locals_r): Handle seeing a full instantiation of a pack.
	(tsubst_pack_expansion): Likewise.  Force lambda capture.
	* parser.c (cp_parser_lambda_introducer): Don't
	check_for_bare_parameter_packs.

From-SVN: r257627

	* pt.c (argument_pack_select_arg): Like the macro, but look through
	a pack expansion.
	(tsubst, tsubst_copy, dependent_template_arg_p): Use it.
	(extract_fnparm_pack): Do make_pack_expansion.
	(extract_locals_r): Do strip a pack expansion.
	* cp-tree.h (ARGUMENT_PACK_SELECT_ARG): Remove.

From-SVN: r257626

gcc:
2018-02-13  Paolo Bonzini <bonzini@gnu.org>

	PR sanitizer/84340
	* internal-fn.def (ASAN_CHECK, ASAN_MARK): Revert changes to fnspec.

gcc/testsuite:
2018-02-13  Paolo Bonzini  <bonzini@gnu.org>

	PR sanitizer/84307
	* gcc.dg/asan/pr84307.c: Remove test.

From-SVN: r257625

Remove an LD subdirectory configuration error:

*** ld does not support target wasm32-unknown-none
*** see ld/configure.tgt for supported targets
make[1]: *** [configure-ld] Error 1

which prevents binutils for the WebAssembly target from being built
unless an explicit `--disable-ld' configuration option has been given.
Users must not have to disable features selected by default to get a
working configuration.

	/
	* configure.ac <wasm32-*-*> (noconfigdirs): Add `ld'.
	* configure: Regenerate.

From-SVN: r257624

2018-02-13  Martin Jambor  <mjambor@suse.cz>

	PR c++/83990
	* ipa-param-manipulation.c (ipa_modify_call_arguments): Use location
	of call statements, also set location of a load to a temporary.

From-SVN: r257623

2018-02-13  Sebastian Perta  <sebastian.perta@renesas.com>

	* config/rl78/rl78.c (add_vector_labels): New function.
	* config/rl78/rl78.c (rl78_handle_vector_attribute): New function.
	* config/rl78/rl78.c (rl78_start_function): Call add_vector_labels.
	* config/rl78/rl78.c (rl78_handle_func_attribute): Removed the assert 
	which checks that no arguments are passed.
	* config/rl78/rl78.c (rl78_attribute_table): Add "vector" attribute.
	* doc/extend.texi: Documentation for the new attribute.

2018-02-13  Sebastian Perta  <sebastian.perta@renesas.com>

	* gcc.target/rl78/test_auto_vector.c: New test.

From-SVN: r257622

This is expected by the AX_PTHREAD autoconf macro from
<http://www.gnu.org/software/autoconf-archive/ax_pthread.html>.

	* config/riscv/linux.h (CPP_SPEC): Define.

From-SVN: r257621

This PR was about a case in which we ended up with a MULT_EXPR
that was shared between an ungimplified VLA type and a pointer
calculation.  The SSA names used in the pointer calculation were
later freed, but they were still there in the VLA, and caused an
ICE when remapping the types during inlinling.

The fix is to add a DECL_EXPR that forces the VLA type sizes to be
gimplified too, but the tricky part is deciding where.  As the comment
in grokdeclarator says, we can't just add it to the statement list,
since the size might only be conditionally evaluated.  It might also
end up being evaluated out of sequence.

The patch gets around that by putting the DECL_EXPR in a BIND_EXPR
and adding the BIND_EXPR to the list of things that need to be
evaluated for the declarator.

2018-02-13  Richard Sandiford  <richard.sandiford@linaro.org>

gcc/c/
	PR c/84305
	* c-decl.c (grokdeclarator): Create an anonymous TYPE_DECL
	in PARM and TYPENAME contexts too, but attach it to a BIND_EXPR
	and include the BIND_EXPR in the list of things that need to be
	pre-evaluated.

gcc/testsuite/
	PR c/84305
	* gcc.c-torture/compile/pr84305.c: New test.

From-SVN: r257620

	PR target/84335
	* config/i386/i386.c (ix86_init_mmx_sse_builtins): Pass
	OPTION_MASK_ISA_AES | OPTION_MASK_ISA_SSE2 instead of
	OPTION_MASK_ISA_AES as first argument to def_builtin_const
	for AES builtins.  Pass OPTION_MASK_ISA_PCLMUL | OPTION_MASK_ISA_SSE2
	instead of OPTION_MASK_ISA_PCLMUL as first argument to
	def_builtin_const for __builtin_ia32_pclmulqdq128 builtin.
	* config/i386/wmmintrin.h: If __SSE2__ is not defined, enable it
	temporarily for AES and PCLMUL builtins.

	* gcc.target/i386/pr84335.c: New test.

From-SVN: r257619

	PR tree-optimization/84339
	* gimple-fold.c (get_range_strlen): Set *FLEXP to true when handling
	ARRAY_REF where first operand is array_at_struct_end_p COMPONENT_REF.
	Formatting fixes.

	* gcc.c-torture/execute/pr84339.c: New test.

From-SVN: r257618

	PR middle-end/84309
	* match.pd (pow(C,x) -> exp(log(C)*x)): Optimize instead into
	exp2(log2(C)*x) if C is a power of 2 and c99 runtime is available.
	* generic-match-head.c (canonicalize_math_after_vectorization_p): New
	inline function.
	* gimple-match-head.c (canonicalize_math_after_vectorization_p): New
	inline function.
	* omp-simd-clone.h: New file.
	* omp-simd-clone.c: Include omp-simd-clone.h.
	(expand_simd_clones): No longer static.
	* tree-vect-patterns.c: Include fold-const-call.h, attribs.h,
	cgraph.h and omp-simd-clone.h.
	(vect_recog_pow_pattern): Optimize pow(C,x) to exp(log(C)*x).
	(vect_recog_widen_shift_pattern): Formatting fix.
	(vect_pattern_recog_1): Don't check optab for calls.

	* gcc.dg/pr84309.c: New test.
	* gcc.target/i386/pr84309.c: New test.

From-SVN: r257617

	PR target/84336
	* config/i386/sse.md (<avx512>_vpermi2var<mode>3_mask): Force
	operands[2] into a REG before using gen_lowpart on it.

	* gcc.target/i386/pr84336.c: New test.

From-SVN: r257616