x86/CET tests: Remove -mcet/-mno-cet or replace -mcet with -mshstk

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

Don't bootstrap GCC with -mcet

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

Regenerate configure of target libraries

* 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

x86/CET: Build target libraries with -mshstk

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

Testsuite fixes for C++11 alignof change.

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

[nvptx] Update newlib dependency.

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

From-SVN: r259596

re PR target/85508 (runtime error in config/i386/i386.c)

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

re PR tree-optimization/85478 (ICE with single element vector)

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

re PR target/85491 (nbench LU Decomposition test 15% slower than GCC 7, 30% slower than peak)

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

re PR target/84828 (ICE in verify_flow_info at gcc/cfghooks.c:265)

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

From-SVN: r259591

Daily bump.

From-SVN: r259589

PR c++/69560 - wrong alignof(double) on x86.

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

Regenerate .pot files.

gcc/po:
* gcc.pot: Regenerate.

libcpp/po:
* cpplib.pot: Regenerate.

From-SVN: r259575

re PR middle-end/85496 (internal compiler error: in emit_move_insn, at expr.c:3722)

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

PR c++/85470 - wrong error with static data member.

* 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

Add myself to MAINTAINERS.

* MAINTAINERS (write after approval): Add myself.

From-SVN: r259570

re PR rtl-optimization/85423 (ICE in code_motion_process_successors, at sel-sched.c:6403)

        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

x86/cet: Use unsigned integer to unwind shadow stack

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

[ARC] Fix FLS, SETI patterns.

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

[ARC] Update sleep builtin.

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

Daily bump.

From-SVN: r259556

[NDS32] Add new option -malways-save-lp.

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

[NDS32] Remove unused function: nds32_ls_333_p().

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

From-SVN: r259551

[NDS32] Refine CASE_VECTOR_SHORTEN_MODE to function.

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

[NDS32] Fix wrong input value of parameter from stack for variable-length function.

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

From-SVN: r259549

[NDS32] Implement DATA_ALIGNMENT, LOCAL_ALIGNMENT and TARGET_CONSTANT_ALIGNMENT.

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

[NDS32] Move some target hooks to the bottom of nds32.c file.

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

From-SVN: r259547

[NDS32] Consider -Ofast and -Og in nds32_asm_file_start function.

gcc/
* config/nds32/nds32.c (nds32_asm_file_start): Display optimization
level Ofast and Og.

From-SVN: r259546

[NDS32] Add unaligned access support.

gcc/
* config/nds32/constants.md (unspec_volatile_element): Add enum values
for unaligned access.
* config/nds32/nds32-intrinsic.c: Implementation of expanding
unaligned access.
* config/nds32/nds32-intrinsic.md: Likewise.
* config/nds32/nds32_intrinsic.h: Likewise.
* config/nds32/nds32.h (nds32_builtins): Likewise.
* config/nds32/nds32.opt (munaligned-access): New option.
* config/nds32/nds32.c (nds32_asm_file_start): Display
flag_unaligned_access status.

Co-Authored-By: Chung-Ju Wu <jasonwucj@gmail.com>
From-SVN: r259545

Daily bump.

From-SVN: r259544

RISC-V: Pass --no-relax to linker if -mno-relax is present.

gcc/
2018-04-20  Kito Cheng  <kito.cheng@gmail.com>
* config/riscv/elf.h (LINK_SPEC): Pass --no-relax if
-mno-relax is present.
* config/riscv/linux.h (LINK_SPEC): Ditto.

From-SVN: r259540

Daily bump.

From-SVN: r259539

PR c/85365 -  -Wrestrict false positives with -fsanitize=undefined

gcc/ChangeLog:

PR c/85365
* gimple-fold.c (gimple_fold_builtin_strcpy): Suppress -Wrestrict
for null pointers.
(gimple_fold_builtin_stxcpy_chk): Same.
* gimple-ssa-warn-restrict.c (check_bounds_or_overlap): Same.

gcc/testsuite/ChangeLog:

PR c/85365
* gcc.dg/Wrestrict-15.c: New test.

From-SVN: r259535

re PR target/85456 (PowerPC: Using -mabi=ieeelongdouble calls wrong function for __builtin_powi.)

[libgcc]
2018-04-20  Michael Meissner  <meissner@linux.ibm.com>

PR target/85456
* config/rs6000/_powikf2.c: New file.  Add support for the
__builtin_powil function when long double is IEEE 128-bit floating
point.
* config/rs6000/float128-ifunc.c (__powikf2_resolve): Add
__powikf2 support.
(__powikf2): Likewise.
* config/rs6000/quad-float128.h (__powikf2_sw): Likewise.
(__powikf2_hw): Likewise.
(__powikf2): Likewise.
* config/rs6000/t-float128 (fp128_ppc_funcs): Likewise.
* config/rs6000/t-float128-hw (fp128_hw_func): Likewise.
(_powikf2-hw.c): Likewise.

[gcc]
2018-04-20  Michael Meissner  <meissner@linux.ibm.com>

PR target/85456
* config/rs6000/rs6000.c (init_float128_ieee): Add support to call
__powikf2 when long double is IEEE 128-bit.

[gcc/testsuite]
2018-04-20  Michael Meissner  <meissner@linux.ibm.com>

PR target/85456
* gcc.target/powerpc/pr85456.c: New test.

From-SVN: r259533

undef-bool-1.C: Require lp64.

[gcc/testsuite]

2018-04-20  Bill Schmidt  <wschmidt@linux.ibm.com>

* g++.dg/ext/undef-bool-1.C: Require lp64.
* gcc.target/powerpc/undef-bool-2.c: Likewise.

From-SVN: r259532

gotest: only use [TD] on big-endian PPC64 non-AIX systems

    Reviewed-on: https://go-review.googlesource.com/108457

From-SVN: r259531

RISC-V: Make sure stack is always aligned during adjusting stack.

gcc/
2018-04-20  Kito Cheng  <kito.cheng@gmail.com>
* config/riscv/riscv.c (riscv_first_stack_step): Round up min
step to make sure stack always aligned.

From-SVN: r259530

stack-check-5.c: Improve dg-skip-if selector for the stack protector.

       * gcc.dg/stack-check-5.c: Improve dg-skip-if selector for the
        stack protector.
        * gcc.dg/stack-check-6.c: Likewise.
        * gcc.dg/stack-check-6a.c: Likewise.
        * gcc.target/i386/stack-check-17.c: Add dg-skip-if selector.
        * gcc.target/i386/stack-check-18.c: Likewise.
        * gcc.target/i386/stack-check-19.c: Likewise.

From-SVN: r259528

Fix missing hunk from previous commit

From-SVN: r259527

PR testsuite/85483: Move aarch64/sve/vcond_1.c test to g++.dg/other/

I totally botched up this sve test file in 259437.
It needs C++, so move it to g++.dg/other and make it a .C file.
Also adds the target guards to prevent it from running on non-aarch64 targets.

Tested that it passes on aarch64-none-elf and doesn't get run on arm-none-eabi.

Committing to trunk as obvious.

PR testsuite/85483
* gcc.target/aarch64/sve/vcond_1.c: Move to...
* g++.dg/other/sve_vcond_1.C: ... Here.  Add target directives.
* gcc.target/aarch64/sve/vcond_1_run.c: Move to...
* g++.dg/other/sve_vcond_1_run.C: ... Here.  Change include file name.

From-SVN: r259526

re PR target/83402 (PPC64 implementation of ./rs6000/emmintrin.h gives out of range for _mm_slli_epi32)

gcc/ChangeLog:

2018-04-20  Carl Love  <cel@us.ibm.com>

        PR target/83402
        * config/rs6000/rs6000-c.c (rs6000_gimple_fold_builtin): Add
        size check for arg0.

From-SVN: r259524

[nvptx] Fix calls to vector and worker routines

2018-04-20  Nathan Sidwell  <nathan@codesourcery.com>
    Tom de Vries  <tom@codesourcery.com>

PR target/85445
* config/nvptx/nvptx.c (nvptx_emit_forking, nvptx_emit_joining):
Emit insns for calls too.
(nvptx_find_par): Always look for worker-level predecessor insn.
(nvptx_propagate): Add is_call parm, return bool.  Copy frame for
calls.
(nvptx_vpropagate, nvptx_wpropagate): Adjust.
(nvptx_process_pars): Propagate frames for calls.

* testsuite/libgomp.oacc-c++/ref-1.C: New.

Co-Authored-By: Tom de Vries <tom@codesourcery.com>
From-SVN: r259523

Define __CET__ for -fcf-protection and remove -mibt

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

-mibt does nothing and can be removed.  Define __CET__ to indicate level
protection with -fcf-protection:

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

gcc/

PR target/85469
* common/config/i386/i386-common.c (OPTION_MASK_ISA_IBT_SET):
Removed.
(OPTION_MASK_ISA_IBT_UNSET): Likewise.
(ix86_handle_option): Don't handle OPT_mibt.
* config/i386/cet.h: Check __CET__ instead of __IBT__ and
__SHSTK__.
* config/i386/driver-i386.c (host_detect_local_cpu): Remove
has_ibt and ibt.
* config/i386/i386-c.c (ix86_target_macros_internal): Don't
check OPTION_MASK_ISA_IBT nor flag_cf_protection.
(ix86_target_macros): Define __CET__ with flag_cf_protection
for -fcf-protection.
* config/i386/i386.c (isa2_opts): Remove -mibt.
* config/i386/i386.h (TARGET_IBT): Removed.
(TARGET_IBT_P): Likewise.
(ix86_valid_target_attribute_inner_p): Don't check OPT_mibt.
* config/i386/i386.md (nop_endbr): Don't check TARGET_IBT.
* config/i386/i386.opt (mcet): Update help message.
(mshstk): Likewise.
(mibt): Removed.
* doc/invoke.texi: Remove -mibt.  Document __CET__.  Document
-mcet as an alias for -mshstk.

gcc/testsuite/

PR target/85469
* gcc.target/i386/pr85044.c (dg-options): Remove -mibt.
* gcc.target/i386/sse-26.c (dg-options): Remove -mno-ibt.

From-SVN: r259522

Do not overflow string buffer (PR objc/85476).

2018-04-20  Martin Liska  <mliska@suse.cz>

PR objc/85476
* objc-act.c (finish_class): Do not overflow string buffer.

From-SVN: r259521

re PR tree-optimization/85475 (Compile time hog w/ -O1 -fpeel-loops)

2018-04-20  Richard Biener <rguenther@suse.de>

PR middle-end/85475
* match.pd ((X * CST) * Y -> (X * Y) * CST): Avoid exponential
complexity by forcing a single use of the multiply operand.

* gcc.dg/torture/pr85475.c: New testcase.

From-SVN: r259519

Fix IPA-CP test for self-feeding recursive dependency

2018-04-20  Martin Jambor  <mjambor@suse.cz>

ipa/85449
* ipa-cp.c (cgraph_edge_brings_value_p): Move check for self-feeding
recursion dependency to only apply to non-clones.

testsuite/
* gcc.dg/ipa/pr85449.c: New test.

From-SVN: r259518

Check that clones of edges exist during IPA-CP

2018-04-20  Martin Jambor  <mjambor@suse.cz>

ipa/85447
* ipa-cp.c (create_specialized_node): Check that clones of
self-recursive edges exist during IPA-CP.

testsuite/
* g++.dg/ipa/pr85447.C: New file.
* gcc.dg/ipa/ipcp-self-recursion-1.c: Likewise.

From-SVN: r259517

re PR c++/85462 (internal compiler error: in inc_refcount_use, at cp/pt.c:8955)

PR c++/85462
* cp-tree.h (tinst_level): Remove in_system_header_p member,
change refcount member from unsigned char to unsigned short,
add refcount_infinity static data member, adjust comments.
* pt.c (tinst_level::refcount_infinity): Define.
(inc_refcount_use): Remove assert, don't increment if refcount
is already refcount_infinity, adjust comment.
(dec_refcount_use): Remove assert, don't decrement if refcount
is refcount_infinity, adjust comment.
(push_tinst_level_loc): Formatting fix.

* g++.dg/cpp0x/pr85462.C: New test.

From-SVN: r259516

Daily bump.

From-SVN: r259515

invoke.texi: Add -floop-unroll-and-jam to options enabled by -O3.

2018-04-19  Toon Moene  <toon@moene.org>

* doc/invoke.texi: Add -floop-unroll-and-jam to options enabled
by -O3.

From-SVN: r259509

Require CET target on gcc.target/i386/pr85404.c

Need a working CET assembler to assemble the compiler output.

* gcc.target/i386/pr85404.c: Require CET target.

From-SVN: r259508

re PR tree-optimization/85467 (ICE: verify_gimple failed: non-trivial conversion at assignment with -O2 -fno-tree-ccp --param=sccvn-max-scc-size=10)

PR tree-optimization/85467
* fold-const.c (fold_ternary_loc) <case BIT_FIELD_REF>: Use
VECTOR_TYPE_P macro.  If type is vector type, VIEW_CONVERT_EXPR the
VECTOR_CST element to type.

* gcc.dg/pr85467.c: New test.

From-SVN: r259507

re PR c++/84611 (ICE in operator[], at vec.h:826 (local_class_index()))

/cp
2018-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84611
* pt.c (lookup_template_class_1): Check pushtag return value for
error_mark_node.

/testsuite
2018-04-19  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84611
* g++.dg/parse/crash68.C: New.

From-SVN: r259505

libgcc/CET: Skip signal frames when unwinding shadow stack

When -fcf-protection -mcet is used, I got

FAIL: g++.dg/eh/sighandle.C

(gdb) bt
 #0  _Unwind_RaiseException (exc=exc@entry=0x416ed0)
    at /export/gnu/import/git/sources/gcc/libgcc/unwind.inc:140
 #1  0x00007ffff7d9936b in __cxxabiv1::__cxa_throw (obj=<optimized out>,
    tinfo=0x403dd0 <typeinfo for int@@CXXABI_1.3>, dest=0x0)
    at /export/gnu/import/git/sources/gcc/libstdc++-v3/libsupc++/eh_throw.cc:90
 #2  0x0000000000401255 in sighandler (signo=11, si=0x7fffffffd6f8,
    uc=0x7fffffffd5c0)
    at /export/gnu/import/git/sources/gcc/gcc/testsuite/g++.dg/eh/sighandle.C:9
 #3  <signal handler called> <<<< Signal frame which isn't on shadow stack
 #4  dosegv ()
    at /export/gnu/import/git/sources/gcc/gcc/testsuite/g++.dg/eh/sighandle.C:14
 #5  0x00000000004012e3 in main ()
    at /export/gnu/import/git/sources/gcc/gcc/testsuite/g++.dg/eh/sighandle.C:30
(gdb) p frames
$6 = 5
(gdb)

frame count should be 4, not 5.  This patch skips signal frames when
unwinding shadow stack.

gcc/testsuite/

PR libgcc/85334
* g++.dg/torture/pr85334.C: New test.

libgcc/

PR libgcc/85334
* unwind-generic.h (_Unwind_Frames_Increment): New.
* config/i386/shadow-stack-unwind.h (_Unwind_Frames_Increment):
Likewise.
* unwind.inc (_Unwind_RaiseException_Phase2): Increment frame
count with _Unwind_Frames_Increment.
(_Unwind_ForcedUnwind_Phase2): Likewise.

From-SVN: r259502

PR c++/85464 - missing location for -Wignored-qualifiers diagnostic

* g++.dg/diagnostic/pr85464.C: New.

From-SVN: r259501

i386: Add save_stack_nonlocal and restore_stack_nonlocal

Define STACK_SAVEAREA_MODE to hold both shadow stack and stack pointers.
Replace builtin_setjmp_setup and builtin_longjmp with save_stack_nonlocal
and restore_stack_nonlocal to support both builtin setjmp/longjmp as well
as non-local goto in nested functions.

gcc/

PR target/85397
* config/i386/i386.h (STACK_SAVEAREA_MODE): New.
* config/i386/i386.md (builtin_setjmp_setup): Removed.
(builtin_longjmp): Likewise.
(save_stack_nonlocal): New pattern.
(restore_stack_nonlocal): Likewise.

gcc/testsuite/

PR target/85397
* gcc.dg/torture/pr85397-1.c: New test.
* gcc.target/i386/cet-sjlj-6a.c: Adjusted.
* gcc.target/i386/cet-sjlj-6b.c: Likewise.

From-SVN: r259500

x86/cet: Properly output labels in property note section

Replace ASM_OUTPUT_LABEL with fprintf so that internal labels in property
note section are unchanged by -fleading-underscore.

gcc/

PR target/85404
* config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
Replace ASM_OUTPUT_LABEL with fprintf.

gcc/testsuite/

PR target/85404
* gcc.target/i386/pr85404.c: New test.

From-SVN: r259498

libgcc/CET: Add _CET_ENDBR to __stack_split_initialize

Program received signal SIGSEGV, Segmentation fault.
__stack_split_initialize ()
    at /export/gnu/import/git/sources/gcc/libgcc/config/i386/morestack.S:751
751 leaq -16000(%rsp),%rax # We should have at least 16K.
Missing separate debuginfos, use: dnf debuginfo-install libgcc-8.0.1-0.21.0.fc28.x86_64
(gdb) disass
Dump of assembler code for function __stack_split_initialize:
=> 0x0000000000402858 <+0>: lea    -0x3e80(%rsp),%rax
   0x0000000000402860 <+8>: mov    %rax,%fs:0x70
   0x0000000000402869 <+17>: sub    $0x8,%rsp
   0x000000000040286d <+21>: mov    %rsp,%rdi
   0x0000000000402870 <+24>: mov    $0x3e80,%esi
   0x0000000000402875 <+29>: callq  0x401810 <__generic_morestack_set_initial_sp>
   0x000000000040287a <+34>: add    $0x8,%rsp
   0x000000000040287e <+38>: retq
End of assembler dump.
(gdb)

This patch adds the missing ENDBR to __stack_split_initialize.

PR libgcc/85379
* config/i386/morestack.S (__stack_split_initialize): Add
_CET_ENDBR.

From-SVN: r259497

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

-fcf-protection -mcet can't be used with IFUNC features, like symbol
multiversioning or target clone, since IBT/SHSTK are applied to the whole
program and they may be disabled in some functions.  But -fcf-protection
is implemented with multi-byte NOPs on all 64-bit processors as well as
32-bit processors starting with Pentium Pro.  If -fcf-protection requires
-mcet, IFUNC features can't be used on Linux when -fcf-protection is
enabled by default.

This patch changes -fcf-protection to implement indirect branch and
return address tracking with multi-byte NOPs.  -mibt and -mshstk are
changed to only enable CET built-in functions.  CET tests are updated
to allow -fcf-protection without -mibt, -mshstk and -mcet on x86.
-fcf-protection=none are also added to tests which fail with
-fcf-protection so that -fcf-protection can be added to RUNTESTFLAGS
to verify -fcf-protection implementation.

gcc/

PR target/85417
* config/i386/cet.c (file_end_indicate_exec_stack_and_cet):
Check flag_cf_protection instead of TARGET_IBT and TARGET_SHSTK.
* config/i386/i386-c.c (ix86_target_macros_internal): Also
define __IBT__ and __SHSTK__ for -fcf-protection.
* config/i386/i386.c (pass_insert_endbranch::gate): Don't check
TARGET_IBT.
(ix86_trampoline_init): Likewise.
(x86_output_mi_thunk): Likewise.
(ix86_notrack_prefixed_insn_p): Likewise.
(ix86_option_override_internal): Don't disallow -fcf-protection.
* config/i386/i386.md (rdssp<mode>): Also enable for
-fcf-protection.
(incssp<mode>): Likewise.
(nop_endbr): Likewise.
* config/i386/i386.opt (mcet): Change help message to built-in
functions only.
(mibt): Likewise.
(mshstk): Likewise.
* doc/invoke.texi: Remove -mcet, -mibt and -mshstk condition
on -fcf-protection.  Change -mcet, -mibt and -mshstk to only
enable CET built-in functions.

gcc/testsuite/

PR target/85417
* c-c++-common/attr-nocf-check-1.c: Compile with
-fcf-protection=none.
* c-c++-common/attr-nocf-check-3.c: Likewise.
* gcc.dg/march-generic.c: Likewise.
* gcc.target/i386/align-limit.c: Likewise.
* gcc.target/i386/cet-notrack-icf-1.c: Likewise.
* gcc.target/i386/cet-notrack-icf-3.c: Likewise.
* gcc.target/i386/cet-property-2.c: Likewise.
* gcc.target/i386/ret-thunk-26.c: Likewise.
* c-c++-common/fcf-protection-1.c: Remove dg-error for x86
targets.
* c-c++-common/fcf-protection-2.c: Likewise.
* c-c++-common/fcf-protection-3.c: Likewise.
* c-c++-common/fcf-protection-5.c: Likewise.
* c-c++-common/fcf-protection-6.c: Likewise.
* c-c++-common/fcf-protection-7.c: Likewise.
* gcc.target/i386/cet-label-3.c: New test.
* gcc.target/i386/cet-property-3.c: Likewise.
* gcc.target/i386/cet-sjlj-7.c: Likewise.
* gcc.target/i386/pr85417-1.c: Likewise.
* gcc.target/i386/indirect-thunk-attr-7.c: Also expect
__x86_indirect_thunk_nt_(r|e)ax
* gcc.target/i386/indirect-thunk-extern-7.c: Likewise.
* gcc.target/i386/pr85403.c: Remove dg-error,

From-SVN: r259496

i386-common.c (OPTION_MASK_ISA_MOVDIRI_SET, [...]): New defines.

2018-04-19  Sebastian Peryt  <sebastian.peryt@intel.com>

gcc/

* common/config/i386/i386-common.c
(OPTION_MASK_ISA_MOVDIRI_SET, OPTION_MASK_ISA_MOVDIR64B_SET,
OPTION_MASK_ISA_MOVDIRI_UNSET,
OPTION_MASK_ISA_MOVDIR64B_UNSET): New defines.
(ix86_handle_option): Handle -mmovdiri and -mmovdir64b.
* config.gcc (movdirintrin.h): New header.
* config/i386/cpuid.h (bit_MOVDIRI,
bit_MOVDIR64B): New bits.
* config/i386/driver-i386.c (host_detect_local_cpu): Detect -mmovdiri
and -mmvodir64b.
* config/i386/i386-builtin-types.def ((VOID, PUNSIGNED, UNSIGNED),
(VOID, PVOID, PCVOID)): New function types.
* config/i386/i386-builtin.def (__builtin_ia32_directstoreu_u32,
__builtin_ia32_directstoreu_u64,
__builtin_ia32_movdir64b): New builtins.
* config/i386/i386-c.c (__MOVDIRI__, __MOVDIR64B__): New.
* config/i386/i386.c (ix86_target_string): Added -mmovdir64b
and -mmovdiri.
(ix86_valid_target_attribute_inner_p): Ditto.
(ix86_expand_special_args_builtin): Added VOID_FTYPE_PUNSIGNED_UNSIGNED
and VOID_FTYPE_PUNSIGNED_UNSIGNED.
(ix86_expand_builtin): Expand IX86_BUILTIN_MOVDIR64B.
* config/i386/i386.h (TARGET_MOVDIRI, TARGET_MOVDIRI_P,
TARGET_MOVDIR64B, TARGET_MOVDIR64B_P): New.
* config/i386/i386.md (UNSPECV_MOVDIRI, UNSPECV_MOVDIR64B): New.
(movdiri<mode>, movdir64b_<mode>): New.
* config/i386/i386.opt: Add -mmovdiri and -mmovdir64b.
* config/i386/immintrin.h: Include movdirintrin.h.
* config/i386/movdirintrin.h: New file.
* doc/invoke.texi: Added -mmovdiri and -mmovdir64b.

gcc/testsuite/

* gcc.target/i386/movdir-1.c: New test.

From-SVN: r259495

re PR rtl-optimization/85455 (ICE in verify_loop_structure, at cfgloop.c:1708 (error: basic block 3 should be marked irreducible))

2018-04-19  Richard Biener  <rguenther@suse.de>

PR middle-end/85455
* cfg.c (clear_bb_flags): When loop state says we have
marked irreducible regions also preserve BB_IRREDUCIBLE_LOOP.

* gcc.dg/pr85455.c: New testcase.

From-SVN: r259494

re PR tree-optimization/84737 (20% degradation in CPU2000 172.mgrid starting with r256888)

2018-04-19  Richard Biener  <rguenther@suse.de>

PR tree-optimization/84737
* tree-vect-data-refs.c (vect_copy_ref_info): New function
copying restrict info.
(vect_setup_realignment): Use it.
* tree-vectorizer.h (vect_copy_ref_info): Declare.
* tree-vect-stmts.c (vectorizable_store): Copy ref info from
the first DR to all generated stores.
(vectorizable_load): Likewise for loads.

From-SVN: r259493

[testsuite] Fix tests for pr84805 and pr85405.

2018-04-19  Christophe Lyon  <christophe.lyon@linaro.org>

* g++.dg/lto/pr85405_0.C: Require shared and fpic effective
targets.
* g++.dg/lto/pr85405b_0.C: Likewise.
* g++.dg/lto/pr84805_0.C: Likewise.

From-SVN: r259492

PR85463 '[nvptx] "exit" in offloaded region doesn't terminate process'

libgomp/
PR libfortran/85166
* testsuite/libgomp.oacc-fortran/abort-1.f90: Switch back to "call
abort".
* testsuite/libgomp.oacc-fortran/abort-2.f90: Likewise.

libgfortran/
PR libfortran/85166
PR libgomp/85463
* runtime/minimal.c (stop_numeric): Reimplement.
(stop_string, error_stop_string, error_stop_numeric): New
functions.
libgomp/
PR libgomp/85463
* testsuite/libgomp.oacc-fortran/error_stop-1.f: New file.
* testsuite/libgomp.oacc-fortran/error_stop-2.f: Likewise.
* testsuite/libgomp.oacc-fortran/error_stop-3.f: Likewise.
* testsuite/libgomp.oacc-fortran/stop-1.f: Likewise.
* testsuite/libgomp.oacc-fortran/stop-2.f: Likewise.
* testsuite/libgomp.oacc-fortran/stop-3.f: Likewise.

From-SVN: r259491

Do not bail out for multiple PREVAILING_DEF_IRONLY for common symbols.

2018-04-19  Martin Liska  <mliska@suse.cz>

* lto-symtab.c (lto_symtab_resolve_symbols): Do not bail out
for multiple PREVAILING_DEF_IRONLY for common symbols.

From-SVN: r259490

re PR tree-optimization/85446 (wrong-code on riscv64)

PR tree-optimization/85446
* match.pd ((intptr_t) x eq/ne CST to x eq/ne (typeof x) cst): Require
the integral and pointer types to have the same precision.

From-SVN: r259488

cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace --enable-cet=default with --enable-cet=auto.

* config/cet.m4 (GCC_CET_FLAGS): Default to --disable-cet, replace
--enable-cet=default with --enable-cet=auto.

* doc/install.texi: Document --disable-cet being the default and
--enable-cet=auto.

* configure: Regenerated.

From-SVN: r259487

re PR c++/80290 (g++ uses unreasonable amount of memory compiling nested string maps)

PR c++/80290
* cp-tree.h (tinst_level::free): Fix whitespace.

From-SVN: r259486

Daily bump.

From-SVN: r259483

Fix coding style and typos.

2018-04-18  Martin Liska  <mliska@suse.cz>

* ipa-devirt.c (odr_subtypes_equivalent_p): Fix GNU coding
style.
2018-04-18  Martin Liska  <mliska@suse.cz>

* lto.c (lto_read_decls): Fix GNU coding style and typos.

From-SVN: r259480

Make Wodr warnings stable.

2018-04-18  Martin Liska  <mliska@suse.cz>

PR ipa/83983
PR ipa/85391
* lto.c (cmp_type_location): New function.
(lto_read_decls): First collect all types, then
sort them according by location before register_odr_type
is called.
2018-04-18  Martin Liska  <mliska@suse.cz>

PR ipa/83983
PR ipa/85391
* g++.dg/lto/pr83121_1.C (struct Environment): Adjust expected
output.

From-SVN: r259479

Revert r258133.

2018-04-18  Martin Liska  <mliska@suse.cz>

Revert
2018-03-02  Eric Botcazou  <ebotcazou@adacore.com>

PR ipa/83983
* ipa-devirt.c (odr_subtypes_equivalent_p): Get the ODR type of both
arguments if they are comparable.

From-SVN: r259478

Revert r25841.

2018-04-18  Martin Liska  <mliska@suse.cz>

Revert
2018-03-13  Eric Botcazou  <ebotcazou@adacore.com>

PR lto/84805
* ipa-devirt.c (odr_subtypes_equivalent_p): Do not get the ODR type of
incomplete types.

From-SVN: r259477

i386: Insert ENDBR after __morestack call

Since __morestack will jump back to its callee via indirect call, we
need to insert ENDBR after calling __morestack.

gcc/

PR target/85388
* config/i386/i386.c (ix86_expand_split_stack_prologue): Insert
ENDBR after calling __morestack.

gcc/testsuite/

PR target/85388
* gcc.dg/pr85388-1.c: New test.
* gcc.dg/pr85388-2.c: Likewise.
* gcc.dg/pr85388-3.c: Likewise.
* gcc.dg/pr85388-4.c: Likewise.
* gcc.dg/pr85388-5.c: Likewise.
* gcc.dg/pr85388-6.c: Likewise.

From-SVN: r259475

PR libstdc++/85442 fix duplicate debuginfo for cxx11-ios_failure.cc

2018-04-18  Jonathan Wakely  <jwakely@redhat.com>
    Jakub Jelinek  <jakub@redhat.com>

PR libstdc++/85442
* src/c++11/Makefile.am: Don't generate debuginfo again for
cxx11-ios_failure-lt.s and cxx11-ios_failure.s files.
* src/c++11/Makefile.in: Regenerate.

Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r259467

re PR lto/85391 (ICE in add_type_duplicate, at ipa-devirt.c:1887)

PR lto/85391
* lto.c (lto_read_decls): Do not test TYPE_CANONICAL before registering odr
types.
* g++.dg/lto/pr83121_0.C: Update template.
* g++.dg/lto/pr83121_1.C: Update template.
* g++.dg/lto/pr84805_0.C: Update template.
* g++.dg/lto/pr84805_1.C: Update template.
* g++.dg/lto/pr84805_2.C: Update template.

Co-Authored-By: Martin Liska <mliska@suse.cz>
From-SVN: r259464

PR libstdc++/84442 if _Exit isn't declared then use _exit instead

PR libstdc++/84442
* testsuite/30_threads/thread/cons/terminate.cc
[!_GLIBCXX_USE_C99_STDLIB] : Use _exit or std::exit instead of _Exit.

From-SVN: r259463

re PR jit/85384 (libgccjit does not work if --with-gcc-major-version is used)

PR jit/85384
* acx.m4 (GCC_BASE_VER): Remove \$\$ from sed expression.

* configure.ac (gcc-driver-name.h): Honor --with-gcc-major-version
by using gcc_base_ver to generate a gcc_driver_version, and use
it when generating GCC_DRIVER_NAME.
* configure: Regenerate.

* configure: Regenerate.

From-SVN: r259462

re PR target/81084 (powerpcspe port full of confusing configury / command-line options not related to SPE)

PR target/81084
* config.gcc: Obsolete powerpc*-*-*spe*.

From-SVN: r259461

re PR c++/84630 (ICE: TYPE_NAME() used on error_mark_node in tsubst_lambda_expr, at cp/pt.c:17141)

/cp
2018-04-18  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84630
* pt.c (tsubst_lambda_expr): Check begin_lambda_type return value
for error_mark_node.

/testsuite
2018-04-18  Paolo Carlini  <paolo.carlini@oracle.com>

PR c++/84630
* g++.dg/cpp0x/pr84630.C: New.

From-SVN: r259460

re PR sanitizer/85389 (posix_memalign() crash with address sanitizer when passing invalid arguments)

PR sanitizer/85389
* asan/asan_allocator.h (kAllocatorSpace): For __powerpc64__ change
from 0xa0000000000ULL to ~(uptr)0.

From-SVN: r259459

re PR c++/84463 (Supposedly-incompliant "error: '* key0' is not a constant expression")

PR c++/84463
* typeck.c (cp_build_addr_expr_1): Move handling of offsetof-like
tricks from here to ...
* cp-gimplify.c (cp_fold) <case ADDR_EXPR>: ... here.  Only use it
if INDIRECT_REF's operand is INTEGER_CST cast to pointer type.

* g++.dg/cpp0x/constexpr-nullptr-1.C: Add -O1 to dg-options.
* g++.dg/cpp0x/constexpr-nullptr-2.C: Expect different diagnostics
in two cases.  Uncomment two other tests and add expected dg-error for
them.
* g++.dg/init/struct2.C: Cast to int rather than long to avoid
-Wnarrowing diagnostics on some targets for c++11.
* g++.dg/parse/array-size2.C: Remove xfail.
* g++.dg/cpp0x/constexpr-84463.C: New test.

From-SVN: r259458

[PR c++/80290] recycle tinst garbage sooner

tinst_level objects are created during template instantiation, and
they're most often quite short-lived, but since there's no intervening
garbage collection, they accumulate throughout the pass while most by
far could be recycled after a short while.  The original testcase in
PR80290, for example, creates almost 55 million tinst_level objects,
all but 10 thousand of them without intervening GC, but we don't need
more than 284 of them live at a time.

Furthermore, in many cases, TREE_LIST objects are created to stand for
the decl in tinst_level.  In most cases, those can be recycled as soon
as the tinst_level object is recycled; in some relatively common
cases, they are modified and reused in up to 3 tinst_level objects.
In the same testcase, TREE_LISTs are used in all but 3 thousand of the
tinst_level objects, and we don't need more than 89 tinst_level
objects with TREE_LISTs live at a time.  Furthermore, all but 2
thousand of those are created without intervening GC.

This patch arranges for tinst_level objects to be refcounted (I've
seen as many as 20 live references to a single tinst_level object in
my testing), and for pending_template, tinst_level and TREE_LIST
objects that can be recycled to be added to freelists; that's much
faster than ggc_free()ing them and reallocating them shortly
thereafter.  In fact, the introduction of such freelists is what makes
this entire patch lighter-weight, when it comes to memory use, and
faster.  With refcounting alone, the total memory footprint was still
about the same, and we spent more time.

In order to further reduce memory use, I've arranged for us to create
TREE_LISTs lazily, only at points that really need them (when printing
error messages).  This grows tinst_level by an additional pointer, but
since a TREE_LIST holds a lot more than an extra pointer, and
tinst_levels with TREE_LISTs used to be allocated tens of thousands of
times more often than plain decl ones, we still save memory overall.

I was still not quite happy about growing memory use in cases that
used template classes but not template overload resolution, so I
changed the type of the errors field to unsigned short, from int.
With that change, in_system_header_p and refcount move into the same
word or half-word that used to hold errors, releasing a full word,
bringing tinst_level back to its original size, now without any
padding.

The errors field is only used to test whether we've had any errors
since the expansion of some template, to skip the expansion of further
templates.  If we get 2^16 errors or more, it is probably reasonable
to refrain from expanding further templates, even if we would expand
them before this change.

With these changes, compile time for the original testcase at -O0,
with default checking enabled, is cut down by some 3.7%, total GCable
memory allocation is cut down by almost 20%, and total memory use (as
reported by GNU time as maxresident) is cut down by slightly over 15%.

for  gcc/cp/ChangeLog

PR c++/80290
* cp-tree.h (struct tinst_level): Split decl into tldcl and
targs.  Add private split_list_p, tree_list_p, and not_list_p
inline const predicates; to_list private member function
declaration; free public member function declaration; list_p,
get_node and maybe_get_node accessors, and refcount data
member.  Narrow errors to unsigned short.
* error.c (print_instantiation_full_context): Use new
accessors.
(print_instantiation_partial_context_line): Likewise.  Drop
const from tinst_level-typed parameter.
* mangle.c (mangle_decl_string): Likewise.
* pt.c (freelist): New template class.
(tree_list_freelist_head): New var.
(tree_list_freelist): New fn, along with specializations.
(tinst_level_freelist_head): New var.
(pending_template_freelist_head): Likewise.
(tinst_level_freelist, pending_template_freelist): New fns.
(tinst_level::to_list, tinst_level::free): Define.
(inc_refcount_use, dec_refcount_use): New fns for tinst_level.
(set_refcount_ptr): New template fn.
(add_pending_template): Adjust for refcounting, freelists and
new accessors.
(neglectable_inst_p): Take a NULL d as a non-DECL.
(limit_bad_template_recursion): Use new accessors.
(push_tinst_level): New overload to create the list.
(push_tinst_level_loc): Make it static, split decl into two
args, adjust tests and initialization to cope with split
lists, use freelist, adjust for refcounting.
(push_tinst_level_loc): New wrapper with the old interface.
(pop_tinst_level): Adjust for refcounting.
(record_last_problematic_instantiation): Likewise.
(reopen_tinst_level): Likewise.  Use new accessors.
(instantiate_alias_template): Adjust for split list.
(fn_type_unification): Likewise.
(get_partial_spec_bindings): Likewise.
(instantiate_pending_templates): Use new accessors.  Adjust
for refcount.  Release pending_template to freelist.
(instantiating_current_function_p): Use new accessors.

From-SVN: r259457

undef-bool-2.c: Add -mvsx.

[gcc/testsuite]

2018-04-17  Bill Schmidt  <wschmidt@linux.ibm.com>

* gcc.target/powerpc/undef-bool-2.c: Add -mvsx.
* gcc.target/g++.dg/ext/undef-bool-1.C: Likewise.

From-SVN: r259456

Daily bump.

From-SVN: r259455

os/signal: disable loading of history during test

    Bring in https://golang.org/cl/98616 from gc tip.

    Original CL description:

        This change modifies Go to disable loading of users' shell history for
        TestTerminalSignal tests. TestTerminalSignal, as part of its workload,
        will execute a new interactive bash shell. Bash will attempt to load the
        user's history from the file pointed to by the HISTFILE environment
        variable. For users with large histories that may take up to several
        seconds, pushing the whole test past the 5 second timeout and causing
        it to fail.

    Reviewed-on: https://go-review.googlesource.com/107624

From-SVN: r259452

re PR debug/84637 (gcc/dbxout.c:684:14: runtime error: negation of -9223372036854775808 cannot be represented in type 'long int'; cast to an unsigned type to negate this value to itself)

PR debug/84637
* dbxout.c (dbxout_int): Perform negation in unsigned int type.
(stabstr_D): Change type of unum from unsigned int to
unsigned HOST_WIDE_INT.  Perform negation in unsigned HOST_WIDE_INT
type.

From-SVN: r259451

RISC-V: Fix 32-bit stack pointer alignment problem.

gcc/
PR 84856
* config/riscv/riscv.c (riscv_compute_frame_info): Add calls to
RISCV_STACK_ALIGN when using outgoing_args_size and pretend_args_size.
Set arg_pointer_offset after using pretend_args_size.

From-SVN: r259449

re PR rtl-optimization/85431 (UBSAN: ../../gcc/dse.c:303:15: runtime error: shift exponent 64 is too large for 64-bit type 'long unsigned int')

PR rtl-optimization/85431
* dse.c (record_store): Ignore zero width stores.

From-SVN: r259448

re PR testsuite/85326 (`make check` fails with `--disable-bootstrap` and `--enable-languages=c`)

PR testsuite/85326
* g++.dg/other/pr81422.C: Require effective target tls and c++11.
* g++.dg/other/pr60675.C: Likewise.  Remove -std=c++11 from dg-options.
* g++.dg/other/sve_tls_2.C: Require effective target tls.

From-SVN: r259447

re PR sanitizer/85230 (asan: false positives in kernel on allocas)

PR sanitizer/85230
* asan.c (handle_builtin_stack_restore): Adjust comment.  Emit
__asan_allocas_unpoison call and last_alloca_addr = new_sp before
__builtin_stack_restore rather than after it.
* builtins.c (expand_asan_emit_allocas_unpoison): Pass
arg1 + (virtual_dynamic_stack_rtx - stack_pointer_rtx) as second
argument instead of virtual_dynamic_stack_rtx.

From-SVN: r259446

gccgo: suppress "ar rcD" and "-zdefs" on AIX

    Reviewed-on: https://go-review.googlesource.com/100955

From-SVN: r259445

Update gcc .po files.

* be.po, da.po, de.po, el.po, es.po, fi.po, fr.po, hr.po, id.po,
ja.po, nl.po, ru.po, sr.po, sv.po, tr.po, uk.po, vi.po, zh_CN.po,
zh_TW.po: Update.

From-SVN: r259443

rs6000-protos.h (rs6000_builtin_is_supported_p): New prototype.

gcc/ChangeLog:

2018-04-13  Kelvin Nilsen  <kelvin@gcc.gnu.org>

* config/rs6000/rs6000-protos.h (rs6000_builtin_is_supported_p):
New prototype.
* config/rs6000/rs6000-c.c (altivec_resolve_overloaded_builtin):
Add note to error message to explain internal mapping of overloaded
built-in function name to non-overloaded built-in function name.
* config/rs6000/rs6000.c (rs6000_builtin_is_supported_p): New
function.

gcc/testsuite/ChangeLog:

2018-04-13  Kelvin Nilsen  <kelvin@gcc.gnu.org>

* gcc.target/powerpc/bfp/scalar-extract-sig-5.c: Simplify to
prevent cascading of errors and change expected error message.
* gcc.target/powerpc/bfp/scalar-test-neg-4.c: Restrict this test
to 64-bit targets.
* gcc.target/powerpc/bfp/scalar-test-data-class-8.c: Likewise.
* gcc.target/powerpc/bfp/scalar-test-data-class-9.c: Likewise.
* gcc.target/powerpc/bfp/scalar-test-data-class-10.c: Likewise.
* gcc.target/powerpc/bfp/scalar-insert-exp-11.c: Change expected
error message.
* gcc.target/powerpc/bfp/scalar-extract-exp-5.c: Likewise.

From-SVN: r259442

re PR target/85424 (The __builtin_packlongdouble function might have issues with the output overlapping the inputs)

2018-04-17  Michael Meissner  <meissner@linux.vnet.ibm.com>

PR target/85424
* config/rs6000/rs6000.md (pack<mode>): Do not try handle a pack
where the inputs overlap with the output.

From-SVN: r259441

backtrace.c: Revert last two changes.

* backtrace.c: Revert last two changes.  Don't call mmap
directly.

From-SVN: r259440

backtrace.c: Include backtrace-supported.h before checking BACKTRACE_USES_MALLOC.

* backtrace.c: Include backtrace-supported.h before checking
BACKTRACE_USES_MALLOC.

From-SVN: r259439