From-SVN: r259637

From-SVN: r259635

	PR c++/85437
	PR c++/49171
	* cp-tree.h (REINTERPRET_CAST_P): New.
	* constexpr.c (cxx_eval_constant_expression) <case NOP_EXPR>:
	Reject REINTERPET_CAST_P conversions.  Use cplus_expand_constant
	for non-trivial PTRMEM_CST cases.
	* typeck.c (build_nop_reinterpret): New.
	(build_reinterpret_cast_1): Use it.  Set REINTERPRET_CAST_P on
	NOP_EXPRs returned by cp_convert.

	* g++.dg/cpp0x/addressof1.C: Make reinterpret cases runtime checks.
	* g++.dg/cpp0x/constexpr-cast.C: Remove xfails
	* g++.dg/cpp0x/constexpr-nullptr-2.C: Likewise.
	* g++.dg/cpp0x/constexpr-pmf1.C: Check when optimized.
	* g++.dg/cpp0x/pr85437-1.C: New.
	* g++.dg/cpp0x/pr85437-2.C: New.
	* g++.dg/cpp0x/pr85437-3.C: New.
	* g++.dg/cpp0x/pr85437-4.C: New.

From-SVN: r259629

From-SVN: r259628

2018-04-24  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/85520
	* decl.c (gfc_match_char_spec): Check for negative length and set to 0.

2018-04-24  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/85520
	* gfortran.dg/pr85520.f90: New test.

From-SVN: r259623

Both of these libfuncs had a "tkf" misspelling, which caused
gcc.target/powerpc/pr85456.c to fail (there is no test for __abskf2).


	* config/rs6000/rs6000.c (init_float128_ieee): Fix spelling mistakes
	in __abskf2 and __powikf2.

From-SVN: r259622

__CET__ has been changed by revision 259522:

commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Apr 20 13:30:13 2018 +0000

    Define __CET__ for -fcf-protection and remove -mibt

to

    (__CET__ & 1) != 0: -fcf-protection=branch or -fcf-protection=full
    (__CET__ & 2) != 0: -fcf-protection=return or -fcf-protection=full

We should check (__CET__ & 2) != 0 for shadow stack.

libgcc/

	* config/i386/linux-unwind.h: Add (__CET__ & 2) != 0 check
	when including "config/i386/shadow-stack-unwind.h".

libitm/

	* config/x86/sjlj.S (_ITM_beginTransaction): Add
	(__CET__ & 2) != 0 check for shadow stack.
	(GTM_longjmp): Likewise.

From-SVN: r259621

Since profiledbootstrap uses

STAGEfeedback_CFLAGS = $(STAGE4_CFLAGS) -fprofile-use

add

STAGE4_CFLAGS += -fcf-protection -mcet

to bootstrap-cet.mk to support profiledbootstrap with CET.

	PR bootstrap/85490
	* bootstrap-cet.mk (STAGE4_CFLAGS): New.

From-SVN: r259620

In this testcase it is possible to generate an invalid SISD shift of zero:
Error: immediate value out of range 1 to 64 at operand 3 -- `sshr v9.2s,v0.2s,0'

The SSHR and USHR instructions require a shift from 1 up to the element size.
However our constraints on the scalar shifts that generate these patterns
allow a shift amount of zero as well. The pure GP-reg ASR and LSR instructions allow a shift amount of zero.

It is unlikely that a shift of zero will survive till the end of compilation, but it's not impossible, as this PR shows.

The patch tightens up the constraints in the offending patterns by adding two new constraints
that allow shift amounts [1,32] and [1,64] and using them in *aarch64_ashr_sisd_or_int_<mode>3
and *aarch64_lshr_sisd_or_int_<mode>3.
The left-shift SISD instructions SHL and USHL allow a shift amount of zero so don't need adjustment
The vector shift patterns that map down to SSHR and USHR already enforce the correct immediate range. 

        PR target/85512
        * config/aarch64/constraints.md (Usg, Usj): New constraints.
        * config/aarch64/iterators.md (cmode_simd): New mode attribute.
        * config/aarch64/aarch64.md (*aarch64_ashr_sisd_or_int_<mode>3):
        Use the above on operand 2.  Reindent.
        (*aarch64_lshr_sisd_or_int_<mode>3): Likewise.

        * gcc.dg/pr85512.c: New test.

From-SVN: r259614

With revision 259496:

commit b1384095a7c1d06a44b70853372ebe037b2f7867
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu Apr 19 15:15:04 2018 +0000

    x86: Enable -fcf-protection with multi-byte NOPs

-fcf-protection no longer depens on -mcet and with revision 259522:

commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Apr 20 13:30:13 2018 +0000

    Define __CET__ for -fcf-protection and remove -mibt

-mcet becomes an alias for -mshstk.  Since all usages of -mcet and
-mno-cet have either been removed or replaced, we can remove the -mcet
command-lint option.

	PR target/85485
	* common/config/i386/i386-common.c (ix86_handle_option): Don't
	handle OPT_mcet.
	* config/i386/i386.opt (mcet): Removed.
	* doc/install.texi: Remove -mcet documentation.
	* doc/invoke.texi: Likewise.

From-SVN: r259613

With revision 259496:

commit b1384095a7c1d06a44b70853372ebe037b2f7867
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu Apr 19 15:15:04 2018 +0000

    x86: Enable -fcf-protection with multi-byte NOPs

-fcf-protection no longer depens on -mcet and with revision 259522:

commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Apr 20 13:30:13 2018 +0000

    Define __CET__ for -fcf-protection and remove -mibt

-mcet becomes an alias for -mshstk.

We can remove -mcet/-mno-cet where they are unused and replace -mcet
with -mshstk where -mcet is used as an alias for -mshstk.

	PR target/85485
	* g++.dg/cet-notrack-1.C (dg-options): Remove -mcet.
	* g++.dg/torture/pr85334.C (dg-additional-options): Likwise.
	* gcc.dg/pr85388-1.c (dg-options): Likwise.
	* gcc.dg/pr85388-2.c (dg-options): Likwise.
	* gcc.dg/pr85388-3.c (dg-options): Likwise.
	* gcc.dg/pr85388-4.c (dg-options): Likwise.
	* gcc.dg/pr85388-5.c (dg-options): Likwise.
	* gcc.dg/pr85388-6.c (dg-options): Likwise.
	* gcc.dg/torture/pr85397-1.c (dg-additional-options): Likwise.
	* gcc.target/i386/attr-nocf-check-1a.c (dg-options): Likwise.
	* gcc.target/i386/attr-nocf-check-3a.c (dg-options): Likwise.
	* gcc.target/i386/cet-label.c (dg-options): Likwise.
	* gcc.target/i386/cet-label-2.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-1b.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-2a.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-2b.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-3.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-4b.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-5a.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-5b.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-6a.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-6b.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-7.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-icf-2.c (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-icf-4.c (dg-options): Likwise.
	* gcc.target/i386/cet-property-1.c (dg-options): Likwise.
	* gcc.target/i386/cet-property-2.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-1.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-2.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-3.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-4.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-5.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-6a.c (dg-options): Likwise.
	* gcc.target/i386/cet-sjlj-6b.c (dg-options): Likwise.
	* gcc.target/i386/cet-switch-1.c (dg-options): Likwise.
	* gcc.target/i386/cet-switch-2.c (dg-options): Likwise.
	* gcc.target/i386/cet-switch-3.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-11.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-12.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-attr-12.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-attr-13.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-attr-14.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-attr-15.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-attr-16.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-extern-8.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-extern-9.c (dg-options): Likwise.
	* gcc.target/i386/indirect-thunk-extern-10.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-1.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-2.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-3.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-4.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-5.c (dg-options): Likwise.
	* gcc.target/i386/pr82659-6.c (dg-options): Likwise.
	* gcc.target/i386/pr84146.c (dg-options): Likwise.
	* gcc.target/i386/pr85403.c (dg-options): Likwise.
	* gcc.target/i386/pr85404.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-3.c (dg-options): Replace -mcet
	with -mshstk.
	* gcc.target/i386/cet-intrin-5.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-6.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-7.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-8.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-9.c (dg-options): Likwise.
	* gcc.target/i386/cet-intrin-10.c (dg-options): Likwise.
	* gcc.target/i386/cet-rdssp-1.c (dg-options): Likwise.
	* (dg-options): Likwise.
	* gcc.target/i386/cet-notrack-1a.c (dg-options): Remove
	-mno-cet.
	* gcc.target/i386/cet-notrack-4a.c (dg-options): Likwise.
	* gcc.target/i386/cet-label-3.c: Removed.
	* gcc.target/i386/cet-property-3.c: Likwise.
	* gcc.target/i386/cet-sjlj-7.c: Likwise.

From-SVN: r259612

With revision 259496:

commit b1384095a7c1d06a44b70853372ebe037b2f7867
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Thu Apr 19 15:15:04 2018 +0000

    x86: Enable -fcf-protection with multi-byte NOPs

-fcf-protection no longer requires -mcet.

config/

	PR target/85485
	* bootstrap-cet.mk (STAGE2_CFLAGS): Remove -mcet.
	(STAGE3_CFLAGS): Likewise.

gcc/

	PR target/85485
	* doc/install.texi: Remove -mcet from bootstrap-cet.

From-SVN: r259611

	* configure: Regenerated.

From-SVN: r259610

re PR target/85511 ([X86] Using __builtin_ia32_writeeflags_u32 in 64-bit mode causes internal compiler error)

	PR target/85511
	* config/i386/i386.c (ix86_init_mmx_sse_builtins): Don't define
	__builtin_ia32_readeflags_u32 and __builtin_ia32_writeeflags_u32
	if TARGET_64BIT.

	* gcc.target/i386/pr85511.c: New test.

From-SVN: r259609

With revision 259522:

commit d59cfa9a4064339cf2bd2da828c4c133f13e57f0
Author: hjl <hjl@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Fri Apr 20 13:30:13 2018 +0000

    Define __CET__ for -fcf-protection and remove -mibt

-mcet becomes an alias for -mshstk.

	PR target/85485
	* cet.m4 (GCC_CET_FLAGS): Replace -mcet with -mshstk.

From-SVN: r259608

re PR target/85503 (ICE in replace_swapped_load_constant, at config/rs6000/rs6000-p8swap.c:1853 on powerpc64le-linux-gnu)

	PR target/85503
	* config/rs6000/rs6000-p8swap.c (const_load_sequence_p): Punt if
	const_vector is not CONST_VECTOR or SYMBOL_REF for a constant pool
	containing a CONST_VECTOR.

	* g++.dg/ext/pr85503.C: New test.

From-SVN: r259607

gcc/testsuite:
	* c-c++-common/attr-aligned-1.c: Use __alignof__ in C++11.
	* g++.dg/cpp0x/alignas4.C: Expect 4-byte alignment on x86.

From-SVN: r259606

	gcc/
	* doc/install.texi: Update newlib dependency for nvptx.

From-SVN: r259596

	PR target/85508
	* config/i386/i386.c (ix86_expand_vector_init_one_var): Use UINTVAL
	instead of INTVAL when shifting x left.

	* gcc.target/i386/pr85508.c: New test.

From-SVN: r259594

Fix PR85478

gcc/ChangeLog:

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR tree-optimization/85478
	* tree-vect-loop.c (vect_analyze_loop_2): Do not call
	vect_grouped_store_supported for single element vectors.

gcc/testsuite/ChangeLog:

2018-04-24  Andreas Krebbel  <krebbel@linux.ibm.com>

	PR tree-optimization/85478
	* g++.dg/pr85478.C: New test.

From-SVN: r259593

2018-04-24  Richard Biener  <rguenther@suse.de>

	PR target/85491
	* config/i386/i386.c (ix86_add_stmt_cost): Restrict strided
	load cost increase to the case of non-constant step.

From-SVN: r259592

	PR target/84828
	* reg-stack.c (move_for_stack_reg): Don't fail assertion about dead
	destination if any_malformed_asm.

From-SVN: r259591

From-SVN: r259589

	CWG 1879 - Inadequate definition of alignment requirement.
	* cp-tree.h (ALIGNOF_EXPR_STD_P): New.
	* typeck.c (cxx_sizeof_or_alignof_type): Add std_alignof parm.
	(cxx_sizeof_expr, cxx_sizeof_nowarn, cxx_alignas_expr)
	(cxx_alignof_expr): Pass it.
	* parser.c (cp_parser_unary_expression): Pass it.
	* pt.c (tsubst_copy): Copy it.
	(tsubst_copy_and_build): Pass it.
	* decl.c (fold_sizeof_expr): Pass it.

From-SVN: r259578

gcc/po:
	* gcc.pot: Regenerate.

libcpp/po:
	* cpplib.pot: Regenerate.

From-SVN: r259575

	PR middle-end/85496
	* expr.c (store_field): In the bitfield case, if the value comes from
	a function call and is returned in registers by means of a PARALLEL,
	do not change the mode of the temporary unless BLKmode and VOIDmode.

From-SVN: r259574

	* decl.c (check_initializer): Check DECL_INITIALIZED_IN_CLASS_P.
	* typeck2.c (store_init_value): Likewise.

Co-Authored-By: Jason Merrill <jason@redhat.com>

From-SVN: r259571

* MAINTAINERS (write after approval): Add myself.

From-SVN: r259570

        PR rtl-optimization/85423

        * sel-sched-ir.c (has_dependence_note_mem_dep): Only discard
        dependencies to debug insns when the previous insn is non-debug.

        * gcc.dg/pr85423.c: New test.

From-SVN: r259563

Use unsigned integer to unwind shadow stack by replacing jle with jbe and
jg with ja.

	PR target/85489
	* config/x86/sjlj.S (GTM_longjmp): Replace jle/jg with jbe/ja.

From-SVN: r259559

Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.md ("vunspec"): Delete it, unify all the unspec
	enums into a single definition.
	(fls): Fix predicates and printing.
	(seti): Likewise.

From-SVN: r259558

gcc/
2018-04-23  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc-protos.h (check_if_valid_sleep_operand): Remove.
	* config/arc/arc.c (arc_expand_builtin): Sleep accepts registers
	and short u6 immediate.
	(check_if_valid_sleep_operand): Remove.
	* config/arc/arc.md (Sleep): Accepts registers and u6 immediates.

changelog

From-SVN: r259557

From-SVN: r259556

gcc/
	* config/nds32/nds32.c (nds32_compute_stack_frame): Consider
	flag_always_save_lp condition.
	* config/nds32/nds32.opt (malways-save-lp): New option.

From-SVN: r259553

[NDS32] Implment USE_LOAD_POST_INCREMENT, USE_LOAD_POST_DECREMENT, USE_STORE_POST_DECREMENT and USE_STORE_POST_INCREMENT.

gcc/
	* config/nds32/nds32-protos.h (nds32_use_load_post_increment): Declare.
	* config/nds32/nds32.c (nds32_use_load_post_increment): New.
	* config/nds32/nds32.h
	(USE_LOAD_POST_INCREMENT, USE_LOAD_POST_DECREMENT): Define.
	(USE_STORE_POST_INCREMENT, USE_STORE_POST_DECREMENT): Define.

From-SVN: r259552

gcc/
	* config/nds32/nds32-protos.h (nds32_ls_333_p): Remove.
	* config/nds32/nds32.c (nds32_ls_333_p): Remove.

From-SVN: r259551

gcc/
	* config/nds32/nds32-protos.h (nds32_case_vector_shorten_mode):
	Declare.
	* config/nds32/nds32.c (nds32_case_vector_shorten_mode): New function.
	* config/nds32/nds32.h (CASE_VECTOR_SHORTEN_MODE): Modify.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>

From-SVN: r259550

gcc/
	* config/nds32/nds32.c (nds32_compute_stack_frame): Fix wrong value.

From-SVN: r259549

gcc/
	* config/nds32/nds32-protos.h (nds32_data_alignment,
	nds32_local_alignment): Declare.
	* config/nds32/nds32.c (nds32_data_alignment, nds32_constant_alignment,
	nds32_local_alignment): New functions.
	(TARGET_CONSTANT_ALIGNMENT): Define.
	* config/nds32/nds32.h (DATA_ALIGNMENT, LOCAL_ALIGNMENT): Define.

From-SVN: r259548

gcc/
	* config/nds32/nds32.c
	(TARGET_HARD_REGNO_MODE_OK): Move to the bottom of file.
	(TARGET_MODES_TIEABLE_P): Likewise.

From-SVN: r259547