re PR d/87824 (x86_64-linux multilib issues)

libphobos/ChangeLog:

2018-11-22  Johannes Pfau  <johannespfau@gmail.com>

PR d/87824
* testsuite/libphobos.shared/shared.exp: Set proper path to phobos
library for multilib builds.

From-SVN: r266366

Daily bump.

From-SVN: r266364

[libbacktrace] Factor out read_initial_length

Factor out new function read_initial_length in dwarf.c.

Bootstrapped and reg-tested on x86_64.

2018-11-22  Tom de Vries  <tdevries@suse.de>

* dwarf.c (read_initial_length): Factor out of ...
(build_address_map, read_line_info): ... here.

From-SVN: r266361

re PR c++/88122 (g++ ICE: internal compiler error: Segmentation fault)

PR c++/88122
* method.c (maybe_explain_implicit_delete): If
FUNCTION_FIRST_USER_PARMTYPE (decl) is NULL, set const_p to false
instead of ICEing.

* g++.dg/cpp0x/implicit15.C: New test.

From-SVN: r266360

re PR c++/87386 (Error message for static_assert show wrong range)

PR c++/87386
* parser.c (cp_parser_primary_expression): Use
id_expression.get_location () instead of id_expr_token->location.
Adjust the range from id_expr_token->location to
id_expressio.get_finish ().
(cp_parser_operator_function_id): Pass location of the operator
token down to cp_parser_operator.
(cp_parser_operator): Add start_loc argument, always construct a
location with caret at start_loc and range from start_loc to the
finish of the last token.
gcc/testsuite/
* g++.dg/diagnostic/pr87386.C: New test.
* g++.dg/parse/error17.C: Adjust expected diagnostics.
libstdc++-v3/
* testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust expected
line.
* testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
* testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
* testsuite/experimental/propagate_const/requirements2.cc: Likewise.
* testsuite/experimental/propagate_const/requirements3.cc: Likewise.
* testsuite/experimental/propagate_const/requirements4.cc: Likewise.
* testsuite/experimental/propagate_const/requirements5.cc: Likewise.

From-SVN: r266359

Revert the revert:

2013-10-26  Vladimir Makarov  <vmakarov@redhat.com>

Revert:
2013-10-25  Vladimir Makarov  <vmakarov@redhat.com>

* lra-spills.c (lra_final_code_change): Remove useless move insns.

From-SVN: r266358

re PR rtl-optimization/85925 (compilation of masking with 257 goes wrong in combine at -02)

PR rtl-optimization/85925
* gcc.c-torture/execute/20181120-1.c: Require effective target
int32plus.
(u): New variable.
(main): Compare d against u.f1 rather than 0x101.  Use 0x4030201
instead of 0x10101.

From-SVN: r266357

re PR middle-end/88129 (Two blockage insns are emited in the function epilogue)

PR middle-end/88129
* function.c (expand_function_end): Do not emit extra blockage insn.

From-SVN: r266356

re PR target/85667 (ms_abi rules aren't followed when returning short structs with float values)

PR target/85667
* config/i386/i386.c (function_value_ms_64): Return AX_REG instead
of FIRST_SSE_REG for 4 or 8 byte modes.

testsuite/ChangeLog:

PR target/85667
* gcc.target/pr85667-1.c: New testcase.
* gcc.target/pr85667-2.c: New testcase.
* gcc.target/pr85667-3.c: New testcase.
* gcc.target/pr85667-4.c: New testcase.

From-SVN: r266355

* invoke.texi (-fdec-include): Document.

From-SVN: r266354

PR libstdc++/88111 Make maximum block size depend on size_t width

PR libstdc++/88111
* include/std/memory_resource (pool_options): Add Doxygen comments.
* src/c++17/memory_resource.cc (pool_sizes): Only use suitable values
on targets with 16-bit or 20-bit size_t type.
(munge_options): Make default values depend on width of size_t type.

From-SVN: r266353

PR libstdc++/88113 use size_type consistently instead of size_t

On 16-bit msp430-elf size_t is either 16 bits or 20 bits, and so can't
represent all values of the uint32_t type used for bitset::size_type.
Using the smaller of size_t and uint32_t for size_type ensures it fits
in size_t.

PR libstdc++/88113
* src/c++17/memory_resource.cc (bitset::size_type): Use the smaller
of uint32_t and size_t.
(bitset::size(), bitset::free(), bitset::update_next_word())
(bitset::max_blocks_per_chunk(), bitset::max_word_index()): Use
size_type consistently instead of size_t.
(chunk): Adjust static_assert checking sizeof(chunk).

From-SVN: r266352

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)

PR lto/87957
* g++.dg/lto/odr-1_0.C: Extend by mismatched enum.
* g++.dg/lto/odr-1_1.C: Extend by mismatched enum.
* g++.dg/lto/odr-2_0.C: New.
* g++.dg/lto/odr-2_0.C: New.
* g++.dg/lto/odr-3_1.C: New.
* g++.dg/lto/odr-3_1.C: New.

From-SVN: r266351

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)

PR lto/87957
* tree.c (fld_decl_context): Break out from ...
(free_lang_data_in_decl): ... here; free TREE_PUBLIC, TREE_PRIVATE
DECL_ARTIFICIAL of TYPE_DECL; do not free TREE_TYPE of TYPE_DECL.
(fld_incomplete_type_of): Build copy of TYP_DECL.
* ipa-devirt.c (free_enum_values): Rename to ...
(free_odr_warning_data): ... this one; free also duplicated TYPE_DECLs
and TREE_TYPEs of TYPE_DECLs.
(get_odr_type): Initialize odr_vtable_hash if needed.

From-SVN: r266350

compute discriminator info for overrides

In some cases of overriding or resetting locations, we might retain
discriminator info from earlier locations, when we should take
discriminator information from the overriding location or reset it.

for  gcc/ChangeLog

* final.c (compute_discriminator): Declare.  Renamed from...
(maybe_set_discriminator): ... this.  Set and return a local.
(override_discriminator): New.
(final_scan_insn_1): Set it.
(notice_source_line): Adjust.  Always set discriminator.

From-SVN: r266349

re PR c++/87393 (gcc/cp/parser.c:13967:37:Unused Entity Issue: expression result unused: -Wunused-value since r251026)

PR c++/87393
* parser.c (cp_parser_linkage_specification): Remove useless
dereference of the consume_open method result.

From-SVN: r266347

re PR target/87839 (ICE in final_scan_insn_1, at final.c:3070)

PR target/87839
* config/aarch64/atomics.md (@aarch64_compare_and_swap<mode>): Use
rIJ constraint for aarch64_plus_operand rather than rn.

* gcc.target/aarch64/pr87839.c: New test.

From-SVN: r266346

[PATCH][PR84877]Dynamically align the address for local parameter copy on the stack when required alignment is larger than MAX_SUPPORTED_STACK_ALIGNMENT

As described in PR84877. https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84877
The local copy of parameter on stack is not aligned.

For BLKmode paramters, a local copy on the stack will be saved.
There are three cases:
1) arguments passed partially on the stack, partially via registers.
2) arguments passed fully on the stack.
3) arguments passed via registers.

After the change here, in all three cases, the stack slot for the local
parameter copy is aligned by the data type.
The stack slot is the DECL_RTL of the parameter. All the references thereafter
in the function will refer to this RTL.

To populate the local copy on the stack,
For case 1) and 2), there are operations to move data from the caller's stack
(from incoming rtl) into callee's stack.
For case 3), the registers are directly saved into the stack slot.

In all cases, the destination address is properly aligned.
But for case 1) and case 2), the source address is not aligned by the type.
It is defined by the PCS how the arguments are prepared.
The block move operation is fulfilled by emit_block_move (). As far as I can see,
it will use the smaller alignment of source and destination.
This looks fine as long as we don't use instructions which requires a strict
larger alignment than the address actually has.

Here, it only changes receiving parameters.
The function assign_stack_local_1 will be called in various places.
Usually, the caller will constraint the ALIGN parameter.
For example via STACK_SLOT_ALIGNMENT macro.
assign_parm_setup_block will call assign_stack_local () with alignment from the
parameter type which in this case could be
larger than MAX_SUPPORTED_STACK_ALIGNMENT.

The alignment operation for parameter copy on the stack is similar to stack vars.
First, enough space is reserved on the stack. The size is fixed at compile time.
Instructions are emitted to dynamically get an aligned address at runtime
within this piece of memory.

This will unavoidably increase the usage of stack. However, it really depends on
how many over-aligned parameters are passed by value.

gcc/

2018-11-21  Renlin Li  <renlin.li@arm.com>

PR middle-end/84877
* explow.h (get_dynamic_stack_size): Declare it as external.
* explow.c (record_new_stack_level): Remove function static attribute.
* function.c (assign_stack_local_1): Dynamically align the stack slot
addr for parameter copy on the stack.

gcc/testsuite/

2018-11-21  Renlin Li  <renlin.li@arm.com>

PR middle-end/84877
* gcc.dg/pr84877.c: New.

From-SVN: r266345

re PR bootstrap/88133 (Build fails with host GCC < 4.3)

2018-11-21  Richard Biener  <rguenther@suse.de>

PR bootstrap/88133
* bitmap.c (bitmap_last_set_bit): Refactor to avoid warning.
* Makefile.in (bitmap.o-warn): Remove again.

From-SVN: r266344

re PR tree-optimization/88069 (ICE in check_loop_closed_ssa_def, at tree-ssa-loop-manip.c:709)

2018-11-20  Jeff Law  <law@redhat.com>

PR tree-optimization/88069
* tree-ssa-dom.c (record_equivalences_from_phis): Propagate away
degenerate virtual PHIs.

From-SVN: r266343

x86: Add pmovzx/pmovsx patterns with memory operands

Many x86 pmovzx/pmovsx instructions with memory operands are modeled in
a wrong way.  For example:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (vec_select:V8QI
        (match_operand:V16QI 1 "nonimmediate_operand" "Yrm,*xm,vm")
        (parallel [(const_int 0) (const_int 1)
               (const_int 2) (const_int 3)
               (const_int 4) (const_int 5)
               (const_int 6) (const_int 7)]))))]

should be defind for memory operands as:

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
    (any_extend:V8HI
      (match_operand:V8QI "memory_operand" "m,m,m")))]

This patch updates them to

(define_insn "sse4_1_<code>v8qiv8hi2<mask_name>"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
(any_extend:V8HI
  (vec_select:V8QI
    (match_operand:V16QI 1 "register_operand" "Yr,*x,v")
    (parallel [(const_int 0) (const_int 1)
       (const_int 2) (const_int 3)
       (const_int 4) (const_int 5)
       (const_int 6) (const_int 7)]))))]

(define_insn "*sse4_1_<code>v8qiv8hi2<mask_name>_1"
  [(set (match_operand:V8HI 0 "register_operand" "=Yr,*x,v")
(any_extend:V8HI
  (match_operand:V8QI "subreg_memory_operand" "m,m,m")))]

with a splitter:

(define_insn_and_split "*sse4_1_<code>v8qiv8hi2<mask_name>_2"
  [(set (match_operand:V8HI 0 "register_operand")
        (any_extend:V8HI
          (vec_select:V8QI
            (subreg:V16QI
              (vec_concat:V2DI
                (match_operand:DI 1 "memory_operand")
                (const_int 0)) 0)
            (parallel [(const_int 0) (const_int 1)
                       (const_int 2) (const_int 3)
                       (const_int 4) (const_int 5)
                       (const_int 6) (const_int 7)]))))]
  "TARGET_SSE4_1
   && <mask_avx512bw_condition>
   && <mask_avx512vl_condition>
  "&& can_create_pseudo_p ()"
  "#"
  "&& 1"
  [(set (match_dup 0)
        (any_extend:V8HI (match_dup 1)))]
  "operands[1] = adjust_address_nv (operands[1], V8QImode, 0);")

This patch requires updating apply_subst_iterator to handle
define_insn_and_split.

gcc/

PR target/87317
* config/i386/sse.md (sse4_1_<code>v8qiv8hi2<mask_name>): Replace
nonimmediate_operand with register_operand.
(avx2_<code>v8qiv8si2<mask_name>): Likewise.
(sse4_1_<code>v4qiv4si2<mask_name>): Likewise.
(sse4_1_<code>v4hiv4si2<mask_name>): Likewise.
(sse4_1_<code>v2qiv2di2<mask_name>): Likewise.
(avx512f_<code>v8qiv8di2<mask_name>): Likewise.
(avx2_<code>v4qiv4di2<mask_name>): Likewise.
(avx2_<code>v4hiv4di2<mask_name>): Likewise.
(sse4_1_<code>v2hiv2di2<mask_name>): Likewise.
(sse4_1_<code>v2siv2di2<mask_name>): Likewise.
(*sse4_1_<code>v8qiv8hi2<mask_name>_1): New pattern.
(*sse4_1_<code>v8qiv8hi2<mask_name>_2): Likewise.
(*avx2_<code>v8qiv8si2<mask_name>_1): Likewise.
(*avx2_<code>v8qiv8si2<mask_name>_2): Likewise.
(*sse4_1_<code>v4qiv4si2<mask_name>_1): Likewise.
(*sse4_1_<code>v4qiv4si2<mask_name>_2): Likewise.
(*sse4_1_<code>v4hiv4si2<mask_name>_1): Likewise.
(*sse4_1_<code>v4hiv4si2<mask_name>_2): Likewise.
(*avx512f_<code>v8qiv8di2<mask_name>_1): Likewise.
(*avx512f_<code>v8qiv8di2<mask_name>_2): Likewise.
(*avx2_<code>v4qiv4di2<mask_name>_1): Likewise.
(*avx2_<code>v4qiv4di2<mask_name>_2): Likewise.
(*avx2_<code>v4hiv4di2<mask_name>_1): Likewise.
(*avx2_<code>v4hiv4di2<mask_name>_2): Likewise.
(*sse4_1_<code>v2hiv2di2<mask_name>_1): Likewise.
(*sse4_1_<code>v2hiv2di2<mask_name>_2): Likewise.
(*sse4_1_<code>v2siv2di2<mask_name>_1): Likewise.
(*sse4_1_<code>v2siv2di2<mask_name>_2): Likewise.

gcc/testsuite/

PR target/87317
* gcc.target/i386/pr87317-1.c: New file.
* gcc.target/i386/pr87317-2.c: Likewise.
* gcc.target/i386/pr87317-3.c: Likewise.
* gcc.target/i386/pr87317-4.c: Likewise.
* gcc.target/i386/pr87317-5.c: Likewise.
* gcc.target/i386/pr87317-6.c: Likewise.
* gcc.target/i386/pr87317-7.c: Likewise.
* gcc.target/i386/pr87317-8.c: Likewise.
* gcc.target/i386/pr87317-9.c: Likewise.
* gcc.target/i386/pr87317-10.c: Likewise.
* gcc.target/i386/pr87317-11.c: Likewise.
* gcc.target/i386/pr87317-12.c: Likewise.
* gcc.target/i386/pr87317-13.c: Likewise.

From-SVN: r266342

apply_subst_iterator: Handle define_split/define_insn_and_split

* read-rtl.c (apply_subst_iterator): Handle define_split and
define_insn_and_split.

From-SVN: r266341

re PR rtl-optimization/87817 (gcc.target/i386/bmi2-bzhi-2.c execution test)

PR rtl-optimization/87817
* config/i386/i386.md (bmi2_bzhi_<mode>3, *bmi2_bzhi_<mode>3,
*bmi2_bzhi_<mode>3_1, *bmi2_bzhi_<mode>3_1_ccz): Use IF_THEN_ELSE
in the pattern to avoid triggering UB when operands[2] is zero.
(tbm_bextri_<mode>): New expander.  Renamed the old define_insn to ...
(*tbm_bextri_<mode>): ... this.

From-SVN: r266340

[libbacktrace] Factor out read_string

Factor out new function read_string in dwarf.c.

Bootstrapped and reg-tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

* dwarf.c (read_string): Factor out of ...
(read_attribute, read_line_header, read_line_program): ... here.

From-SVN: r266339

[driver] Ensure --help=params lines end with period

Ensure that gcc --help=params lines end with a period by:
- fixing the help message of param HOT_BB_COUNT_FRACTION, and
- adding a test-case.

Build and tested on x86_64.

2018-11-21  Tom de Vries  <tdevries@suse.de>

PR driver/79855
* params.def (HOT_BB_COUNT_FRACTION): Terminate help message with
period.

* lib/options.exp (check_for_options_with_filter): New proc.
* gcc.misc-tests/help.exp: Check that --help=params lines end with
period.

From-SVN: r266338

lang.opt (fdec-include): New option.

* lang.opt (fdec-include): New option.
* options.c (set_dec_flags): Set also flag_dec_include.
* scanner.c (include_line): Change return type from bool to int.
In fixed form allow spaces in between include keyword letters.
For -fdec-include, allow in fixed form 0 in column 6.  With
-fdec-include return -1 if the parsed line is not full include
statement and it could be successfully completed on continuation
lines.
(include_stmt): New function.
(load_file): Adjust include_line caller.  If it returns -1, keep
trying include_stmt until it stops returning -1 whenever adding
further line of input.

* gfortran.dg/include_10.f: New test.
* gfortran.dg/include_10.inc: New file.
* gfortran.dg/include_11.f: New test.
* gfortran.dg/include_12.f: New test.
* gfortran.dg/include_13.f90: New test.
* gfortran.dg/gomp/include_1.f: New test.
* gfortran.dg/gomp/include_1.inc: New file.
* gfortran.dg/gomp/include_2.f90: New test.

Co-Authored-By: Mark Eggleston <mark.eggleston@codethink.com>
From-SVN: r266337

S/390: Support vector load/store alignment hints

The IBM z14 POP adds an optional alignment operand to the vl, vst,
vlm, and vstm instruction (vector loads and stores). Vectors residing
on 8 or 16 byte boundaries might get loaded or stored faster on some
models given the instruction uses the proper hint operand.  A wrong
hint will hurt performance though.

The attached testcase align-1 currently fails due to:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88085

gcc/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

* configure.ac: Add check for Binutils to determine whether vector
load/store alignments hints are being supported.
* config.in: Regenerate.
* configure: Regenerate.
* config/s390/s390.c (print_operand): Support new output
modifier A.
* config/s390/s390.md ("movti"): Append alignment hint output
using the new output modifier 'A'.
* config/s390/vector.md ("mov<mode>", "*vec_tf_to_v1tf")
("*vec_ti_to_v1ti"): Likewise.

gcc/testsuite/ChangeLog:

2018-11-21  Andreas Krebbel  <krebbel@linux.ibm.com>

* gcc.target/s390/vector/align-1.c: New test.
* gcc.target/s390/vector/align-2.c: New test.

From-SVN: r266336

c-parser.c (c_parser_has_attribute_expression): New function.

gcc/c/ChangeLog:

* c-parser.c (c_parser_has_attribute_expression): New function.
(c_parser_attribute): New function.
(c_parser_attributes): Move code into c_parser_attribute.
(c_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.

gcc/c-family/ChangeLog:

* c-attribs.c (type_for_vector_size): New function.
(type_valid_for_vector_size): Same.
(handle_vector_size_attribute): Move code to the functions above
and call them.
(validate_attribute, has_attribute): New functions.
* c-common.h (has_attribute): Declare.
(rid): Add RID_HAS_ATTRIBUTE_EXPRESSION.
* c-common.c (c_common_resword): Same.

gcc/cp/ChangeLog:

* cp-tree.h (cp_check_const_attributes): Declare.
* decl2.c (cp_check_const_attributes): Declare extern.
* parser.c (cp_parser_has_attribute_expression): New function.
(cp_parser_unary_expression): Handle RID_HAS_ATTRIBUTE_EXPRESSION.
(cp_parser_gnu_attribute_list): Add argument.

gcc/ChangeLog:

* doc/extend.texi (Other Builtins): Add __builtin_has_attribute.

gcc/testsuite/ChangeLog:

* c-c++-common/builtin-has-attribute-2.c: New test.
* c-c++-common/builtin-has-attribute-3.c: New test.
* c-c++-common/builtin-has-attribute-4.c: New test.
* c-c++-common/builtin-has-attribute.c: New test.
* gcc.dg/builtin-has-attribute.c: New test.
* gcc/testsuite/gcc.target/i386/builtin-has-attribute.c: New test.

From-SVN: r266335

re PR lto/84044 (Spurious -Wodr warning with -flto)

PR lto/84044
* ipa-devirt.c (odr_types_equivalent_p): Use operand_equal_p to
compare ENUM values.
* g++.dg/lto/odr-4_0.C: New testcase.
* g++.dg/lto/odr-4_1.C: New testcase.

From-SVN: r266334

re PR go/88060 (../../../gcc-8.2.0/libgo/go/syscall/libcall_linux_utimesnano.go:17:18: error: reference to undefined name ‘_AT_FDCWD’)

PR go/88060
    syscall: always define _AT_FDCWD and IPv6MTUInfo

    They aren't defined by old versions of glibc, but are required by the
    code in syscall_linux.go.

    Reviewed-on: https://go-review.googlesource.com/c/150697

From-SVN: r266333

Daily bump.

From-SVN: r266332

re PR c++/88110 (ICE (segfault) with -std=C++2a in cxx_eval_constant_expression when trying to evaluate nonoverridden "virtual ... = 0" function of a base class)

PR c++/88110
* constexpr.c (cxx_eval_constant_expression) <case OBJ_TYPE_REF>: Punt
if get_base_address of ADDR_EXPR operand is not a DECL_P.

* g++.dg/cpp2a/constexpr-virtual13.C: New test.

From-SVN: r266329

re PR tree-optimization/87895 (ICE in purge_dead_edges, at cfgrtl.c:3246)

PR tree-optimization/87895
* omp-simd-clone.c (ipa_simd_modify_function_body): When removing
or replacing GIMPLE_RETURN, set EDGE_FALLTHRU on the edge to EXIT.
(simd_clone_adjust): Don't set EDGE_FALLTHRU here. In a loop that
redirects edges to EXIT to edges to incr_bb, iterate while EXIT
has any preds and always use EDGE_PRED (, 0).

* gcc.dg/gomp/pr87895-1.c: New test.
* gcc.dg/gomp/pr87895-2.c: New test.
* gcc.dg/gomp/pr87895-3.c: New test.

From-SVN: r266328

re PR target/88070 (ICE in create_pre_exit, at mode-switching.c:438)

PR target/88070
* mode-switching.c (create_pre_exit): After reload, always split the
fallthrough edge to the exit block.

testsuite/ChangeLog:

PR target/88070
* gcc.target/i386/pr88070.c: New test.

From-SVN: r266326

ipa-devirt.c (add_type_duplicate): Do not ICE on incomplete enums.

* ipa-devirt.c (add_type_duplicate): Do not ICE on incomplete enums.
* tree.c (build_array_type_1): Forward declare.
(fld_type_variant_equal_p): Add INNER_TYPE parameter.
(fld_type_variant): Likewise.
(fld_simplified_types): New hash.
(fld_process_array_type): New function.
(fld_incomplete_type_of): Handle array and enumeration types.
(fld_simplified_type): Handle simplification of arrays.
(free_lang_data): Allocate and free simplified types hash.

From-SVN: r266325

Fix missing commit log.

From-SVN: r266323

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)

PR lto/87957
* ipa-devirt.c (odr_subtypes_equivalent_p): Report ODR violation
when sybtype already violates ODR.
(get_odr_type): Do not ICE when insert is false and type duplicate
is not registered yet.
(register_odr_type): Be sure to register subtypes first.

From-SVN: r266322

S/390: Fix flogr RTX.

The flogr instruction uses a 64 bit register pair target operand.  In
the RTX we model this as a write to a TImode register.  Unfortunately
the RTX's being assigned to the two parts of the target operand were
swapped.  This is no problem if in the end the flogr instruction will
be emitted since the instruction still does what the clzdi expander
expects.  However, a problem arises when the RTX is used to optimize
CLZ for a constant input operand.  Even then it matters only if the
expression couldn't be folded on tree level already.

In the testcase this happened thanks to loop unrolling on RTL level.
The iteration variable is used as an argument to the clz
builtin. Due to the loop unrolling it becomes a constant and after
folding the broken RTX leads to a wrong assumption.

gcc/ChangeLog:

2018-11-20  Andreas Krebbel  <krebbel@linux.ibm.com>

* config/s390/s390.md ("clztidi2"): Swap the RTX's written to the
DImode parts of the target operand.

gcc/testsuite/ChangeLog:

2018-11-20  Andreas Krebbel  <krebbel@linux.ibm.com>

* gcc.target/s390/flogr-1.c: New test.

From-SVN: r266321

re PR ipa/87706 (Inlined functions trigger invalid -Wmissing-profile warning)

PR ipa/87706
* ipa-fnsummary.c (pass_ipa_fnsummary): Do not remove functions
* ipa.c (possible_inline_candidate_p): Break out from ..
(process_references): ... here ; drop before_inlining_p;
cleanup handling of alises.
(walk_polymorphic_call_targets): Likewise.
(symbol_table::remove_unreachable_nodes): Likewise.
* passes.c (pass_data_ipa_remove_symbols): New structure.
(pass_ipa_remove_symbols): New pass.
(make_pass_ipa_remove_symbols): New function.
* tree-pass.h (make_pass_ipa_remove_symbols): Declare.
* passes.def (pass_ipa_remove_symbols): Schedule after early passes.

From-SVN: r266320

re PR tree-optimization/87926 (bad array-index warning breaks --disable-checking bootstrap)

PR 87926
* Makefile.in (bitmap.o-warn): Use -Wno-error=array-bounds.

From-SVN: r266319

re PR lto/87997 (ICE in cp_var_mod_type_p at gcc/cp/cp-objcp-common.c:107 since r265870)

PR lto/87997
* tree.c (free_lang_data_in_cgraph): Add argument fld; break out
type checking to...
(free_lang_data) ... here; update call of free_lang_data_in_cgraph.

From-SVN: r266316

re PR ipa/87706 (Inlined functions trigger invalid -Wmissing-profile warning)

PR ipa/87706
* ipa-fnsummary.c (pass_ipa_fnsummary): Do not remove functions
* ipa.c (possible_inline_candidate_p): Break out from ..
(process_references): ... here ; drop before_inlining_p;
cleanup handling of alises.
(walk_polymorphic_call_targets): Likewise.
(symbol_table::remove_unreachable_nodes): Likewise.
* passes.c (pass_data_ipa_remove_symbols): New structure.
(pass_ipa_remove_symbols): New pass.
(make_pass_ipa_remove_symbols): New functoin.
* passes.def (pass_ipa_remove_symbols): Schedule after early passes.

From-SVN: r266315

tree-vect-stmts.c (vectorizable_condition): Do not get at else_clause vect def for EXTRACT_LAST_REDUCTION.

2018-11-20  Richard Biener  <rguenther@suse.de>

* tree-vect-stmts.c (vectorizable_condition): Do not get
at else_clause vect def for EXTRACT_LAST_REDUCTION.  Remove
pointless vect_is_simple_use calls.

From-SVN: r266314

re PR tree-optimization/88074 (g++ hangs on math expression)

2018-11-20  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88074
* tree-ssa-dom.c (pass_dominator::execute): Do not walk
backedges.

* gcc.dg/pr88074.c: New testcase.

From-SVN: r266313

Move some i386 C++ tests into g++.target/i386.

2018-11-20  Martin Liska  <mliska@suse.cz>

* pr57362.C: Move to g++.target/i386 folder.
* pr57548.C: Likewise.
* pr59492.C: Likewise.
* pr82625.C: Likewise.
* pr85329-2.C: Likewise.
* pr85329.C: Likewise.

From-SVN: r266312

Housekeeping for the effective targets of optional's tests.

* testsuite/20_util/optional/77288.cc: Adjust.
* testsuite/20_util/optional/84601.cc: Likewise.
* testsuite/20_util/optional/assignment/1.cc: Likewise.
* testsuite/20_util/optional/assignment/2.cc: Likewise.
* testsuite/20_util/optional/assignment/3.cc: Likewise.
* testsuite/20_util/optional/assignment/4.cc: Likewise.
* testsuite/20_util/optional/assignment/5.cc: Likewise.
* testsuite/20_util/optional/assignment/6.cc: Likewise.
* testsuite/20_util/optional/assignment/7.cc: Likewise.
* testsuite/20_util/optional/assignment/8.cc: Likewise.
* testsuite/20_util/optional/cons/77727.cc: Likewise.
* testsuite/20_util/optional/cons/copy.cc: Likewise.
* testsuite/20_util/optional/cons/deduction.cc: Likewise.
* testsuite/20_util/optional/cons/default.cc: Likewise.
* testsuite/20_util/optional/cons/move.cc: Likewise.
* testsuite/20_util/optional/cons/trivial.cc: Likewise.
* testsuite/20_util/optional/cons/value.cc: Likewise.
* testsuite/20_util/optional/cons/value_neg.cc: Likewise.
* testsuite/20_util/optional/constexpr/cons/default.cc: Likewise.
* testsuite/20_util/optional/constexpr/cons/value.cc: Likewise.
* testsuite/20_util/optional/constexpr/in_place.cc: Likewise.
* testsuite/20_util/optional/constexpr/nullopt.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/1.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/4.cc: Likewise.
* testsuite/20_util/optional/constexpr/observers/5.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/1.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/2.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/3.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/4.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/5.cc: Likewise.
* testsuite/20_util/optional/constexpr/relops/6.cc: Likewise.
* testsuite/20_util/optional/in_place.cc: Likewise.
* testsuite/20_util/optional/make_optional.cc: Likewise.
* testsuite/20_util/optional/nullopt.cc: Likewise.
* testsuite/20_util/optional/observers/1.cc: Likewise.
* testsuite/20_util/optional/observers/2.cc: Likewise.
* testsuite/20_util/optional/observers/3.cc: Likewise.
* testsuite/20_util/optional/observers/4.cc: Likewise.
* testsuite/20_util/optional/observers/5.cc: Likewise.
* testsuite/20_util/optional/observers/6.cc: Likewise.
* testsuite/20_util/optional/relops/1.cc: Likewise.
* testsuite/20_util/optional/relops/2.cc: Likewise.
* testsuite/20_util/optional/relops/3.cc: Likewise.
* testsuite/20_util/optional/relops/4.cc: Likewise.
* testsuite/20_util/optional/relops/5.cc: Likewise.
* testsuite/20_util/optional/relops/6.cc: Likewise.
* testsuite/20_util/optional/relops/7.cc: Likewise.
* testsuite/20_util/optional/requirements.cc: Likewise.
* testsuite/20_util/optional/swap/1.cc: Likewise.
* testsuite/20_util/optional/swap/2.cc: Likewise.
* testsuite/20_util/optional/typedefs.cc: Likewise.

From-SVN: r266310

re PR bootstrap/88106 (Bootstrap failure on mingw32)

PR bootstrap/88106
* config/mingw32/affinity-fmt.c: New file.

From-SVN: r266309

re PR tree-optimization/88069 (ICE in check_loop_closed_ssa_def, at tree-ssa-loop-manip.c:709)

2018-11-20  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88069
* tree-ssa-sccvn.c (visit_phi): Do not value-number to unvisited
virtual PHI arguments.

* gcc.dg/pr88069.c: New testcase.

From-SVN: r266308

Add -fomit-frame-pointer to a test-case (PR ipa/88093).

2018-11-20  Martin Liska  <mliska@suse.cz>

PR ipa/88093
* gcc.target/i386/ipa-stack-alignment.c: Add
-fomit-frame-pointer.

From-SVN: r266307

S/390: Skip LT(G) peephole when literal pool is involved

By the time peephole optimizations run, we've already made up our mind
whether to use base-register or relative addressing for literal pool
entries.  LT(G) supports only base-register addressing, and so it is
too late to convert L(G)RL + compare to LT(G).  This change should not
make the code worse unless building with e.g. -fno-dce, since comparing
literal pool entries to zero should be optimized away during earlier
passes.

gcc/ChangeLog:

2018-11-20  Ilya Leoshkevich  <iii@linux.ibm.com>

PR target/88083
* config/s390/s390.md: Skip LT(G) peephole when literal pool is
involved.
* rtl.h (contains_constant_pool_address_p): New function.
* rtlanal.c (contains_constant_pool_address_p): Likewise.

gcc/testsuite/ChangeLog:

2018-11-20  Ilya Leoshkevich  <iii@linux.ibm.com>

PR target/88083
* gcc.target/s390/pr88083.c: New test.

From-SVN: r266306

re PR middle-end/83215 (C++: struct with char-array assumed to alias with everything)

2018-11-20  Richard Biener  <rguenther@suse.de>

PR middle-end/83215
* alias.c (component_uses_parent_alias_set_from): Remove
alias-set zero and TYPE_TYPELESS_STORAGE case both already
handled in other ways.

* g++.dg/tree-ssa/pr83215.C: New testcase.

From-SVN: r266305

re PR rtl-optimization/85925 (compilation of masking with 257 goes wrong in combine at -02)

PR rtl-optimization/85925
* rtl.h (word_register_operation_p): New predicate.
* combine.c (record_dead_and_set_regs_1): Only apply specific handling
for WORD_REGISTER_OPERATIONS targets to word_register_operation_p RTX.
* rtlanal.c (nonzero_bits1): Likewise.  Adjust couple of comments.
(num_sign_bit_copies1): Likewise.

From-SVN: r266302

re PR lto/88087 (ICE in execute at tree-ssa-pre.c:4220 since r266183)

2018-11-20  Richard Biener  <rguenther@suse.de>

PR tree-optimization/88087
* tree-ssa-pre.c (create_expression_by_pieces): Re-materialize
call fntype.
* tree-ssa-sccvn.c (copy_reference_ops_from_call): Remember
call fntype.

* gcc.dg/tree-ssa/pr88087.c: New testcase.

From-SVN: r266301

re PR bootstrap/88089 (build failure with GCC 4.9 on SPARC/Solaris)

2018-11-20  Richard Biener  <rguenther@suse.de>

PR middle-end/88089
* tree-data-ref.c (lambda_matrix_right_hermite): Use abs_hwi.

From-SVN: r266300

align-3.c: Skip if pdp11.

    * gcc.c-torture/execute/align-3.c: Skip if pdp11.
    * gcc.c-torture/execute/pr23467.c: Ditto.
    * gcc.c-torture/execute/pr36093.c: Ditto.
    * gcc.c-torture/execute/pr43783.c: Ditto.
    * gcc.dg/const-elim-2.c: Xfail if pdp11.
    * gcc.dg/torture/pr36400.c: Ditto.
    * gcc.dg/tree-ssa/loop-1.c: Xfail for pdp11.  Add pdp11 to check
    for jsr.

From-SVN: r266299

target-supports.exp (check_weak_available): Return "no" for pdp11.

* lib/target-supports.exp (check_weak_available): Return "no" for
pdp11.

From-SVN: r266297

Daily bump.

From-SVN: r266293

PR81878: fix --disable-bootstrap --enable-languages=ada

gnattools build machinery uses just-build xgcc and xg++ as $(CC) and
$(CXX) in native builds.  However, if C and C++ languages are not
enabled, it won't find them.  So, enable C and C++ if Ada is enabled.
Most of the time, this is probably no big deal: C is always enabled
anyway, and C++ is already enabled for bootstraps.

We need not enable those for cross builds, however.  At first I just
took the logic from gnattools/configure, but found it to be lacking:
it would use the just-built tools even in cross-back settings, whose
tools just built for the host would not run on the build machine.  So
I've narrowed down the test to rely on autoconf-detected cross-ness
(build->host only), but also to ensure that host matches build, and
that target matches host.

I've considered sourcing ada/config-lang.in from within
gnattools/configure, and testing lang_requires as set by it, so as to
avoid a duplication of tests that ought to remain in sync, but decided
it would be too fragile, as ada/config-lang.in does not expect srcdir
to refer to gnattools.

for  gcc/ada/ChangeLog

PR ada/81878
* gcc-interface/config-lang.in (lang_requires): Set to "c c++"
when gnattools wants it.

for  gnattools/ChangeLog

PR ada/81878
* configure.ac (default_gnattools_target): Do not mistake
just-built host tools as native in cross-back toolchains.
* configure: Rebuilt.

From-SVN: r266290

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)

PR lto/87957
* ipa-devirt.c (free_enum_values): Do not ICE on ODR vilations.

From-SVN: r266289

re PR driver/50250 (Driver documentation on -l does not mention shared libraries)

2018-11-19  Sandra Loosemore  <sandra@codesourcery.com>

PR driver/50250

gcc/
* doc/invoke.texi (Link Options): Mention shared libraries
in documentation for the -l option.  Simplify discussion and
point to the system linker documentation for details.

From-SVN: r266287

PR c++/87781 - detect invalid elaborated-type-specifier.

* parser.c (cp_parser_elaborated_type_specifier): Ensure that
typename follows a nested-name-specifier.

* g++.dg/parse/elab3.C: New test.
* g++.dg/template/crash115.C: Adjust dg-error.

From-SVN: r266285

2018-11-19  François Dumont  <fdumont@gcc.gnu.org>

* include/ext/throw_allocator.h
(annotate_base::insert(void*, size_t)): Use insert result to check for
double insert attempt.
(annotate_base::insert_construct(void*)): Likewise.
(annotate_base::check_allocated(void*, size_t)): Return found iterator.
(annotate_base::erase(void*, size_t)): Use latter method returned
iterator.
(annotate_base::check_constructed(void*, size_t)): Return found iterator.
(annotate_base::erase_construct(void*)): Use latter method returned
iterator.

From-SVN: r266284

re PR rtl-optimization/88033 (ICE on valid code at -O2 and -O3 on x86-64-linux-gnu: in remove_some_program_points_and_update_live_ranges, at lra-lives.c:1179)

gcc/
PR rtl-optimization/88033
* ira-lives.c (non_conflicting_reg_copy_p): Skip copies from a register
to itself.  Use HARD_REGISTER_NUM_P.

gcc/testsuite/
PR rtl-optimization/88033
* gcc.target/i386/pr88033.c: New test.

From-SVN: r266282

Disable unrolling for loops vectorised with non-constant VF

This is an alternative to https://gcc.gnu.org/ml/gcc-patches/2018-11/msg00694.html
As richi suggested, this disables unrolling of loops vectorised with variable-length SVE
in the vectoriser itself through the loop->unroll member.

It took me a few tries to get it right, as it needs to be set to '1' to disable unrolling,
the rationale for that mechanism is described in the comment in cfgloop.h.

* tree-vect-loop.c (vect_transform_loop): Disable further unrolling
of the loop if vf is non-constant.

* gcc.target/aarch64/sve/unroll-1.c: New test.

From-SVN: r266281

Fix -fsave-optimization-record ICE (PR tree-optimization/87025)

PR tree-optimization/87025 reports an ICE within
-fsave-optimization-record's optrecord_json_writer.

The issue is that dump_context::begin_scope creates an optinfo
of kind OPTINFO_KIND_SCOPE, but fails to call
dump_context::end_any_optinfo, so the optinfo for the scope remains
pending.

The JSON writer would normally push a JSON array for the "scope" optinfo
when the latter is emitted.  However, if a dump_* call happens that
doesn't flush the "scope" optinfo e.g. dump_printf (as opposed to
dump_printf_loc), that dump_ call is added to the pending optinfo, and
optinfo::handle_dump_file_kind changes the pending optinfo's m_kind
(e.g. to OPTINFO_KIND_NOTE).  Hence when the pending optinfo is
eventually emitted, it isn't OPTINFO_KIND_SCOPE anymore, and hence
the JSON writer doesn't create and push a JSON array for it, leading
to dump_context's view of scopes getting out-of-sync with that of
the JSON writer's.

Later, dump_context::end_scope unconditionally tries to pop the JSON scope
array, but no JSON scope array was added, leading to an assertion
failure (or crash).

The fix is to call dump_context::end_any_optinfo immediately after
creating the scope optinfo, so that it is emitted immediately, ensuring
that the JSON writer stays in-sync with the dump_context.

gcc/ChangeLog:
PR tree-optimization/87025
* dumpfile.c (dump_context::begin_scope): Call end_any_optinfo
immediately after creating the scope optinfo.
(selftest::test_pr87025): New function.
(selftest::dumpfile_c_tests): Call it.
* optinfo-emit-json.cc (optrecord_json_writer::pop_scope): Assert
that we're not popping the top-level records array.
* optinfo.cc (optinfo::handle_dump_file_kind): Assert that we're
not changing the kind of a "scope" optinfo.

gcc/testsuite/ChangeLog:
PR tree-optimization/87025
* gcc.dg/pr87025.c: New test.

From-SVN: r266280

Eliminate global state from -fsave-optimization-record

As work towards fixing PR tree-optimization/87025, this patch
eliminates global state from optinfo-emit-json.cc in favor
of adding an optional m_json_writer field to dump_context,
replacing the m_forcibly_enable_optinfo flag.

This allows for writing selftests for the interaction of the
JSON-building code with the dumpfile.c code.
In particular, the existing selftest that created optinfo
instances now exercise the JSON-building code (although no
JSON is actually written out).

The patch also simplifies the layering by replacing optinfo::emit ()
with dump_context::emit_optinfo, so that dump_context has
responsibility for keeping track of dump destinations.

gcc/ChangeLog:
PR tree-optimization/87025
* dump-context.h: Include "optinfo.h".
(class optrecord_json_writer): New forward decl.
(dump_context::forcibly_enable_optinfo_p): Delete.
(dump_context::optinfo_enabled_p): New member function.
(dump_context::optimization_records_enabled_p): New member
function.
(dump_context::set_json_writer): New member function.
(dump_context::emit_optinfo): New member function.
(dump_context::m_forcibly_enable_optinfo): Delete.
(dump_context::m_json_writer): New member data.
* dumpfile.c (dump_context::set_json_writer): New member function.
(dump_context::finish_any_json_writer): New member function.
(dump_context::end_scope): Replace call to
optimization_records_maybe_pop_dump_scope with call to
m_json_writer->pop_scope.
(dump_context::optinfo_enabled_p): New member function.
(dump_context::end_any_optinfo): Replace call to optinfo::emit with call
to dump_context::emit_optinfo.
(dump_context::emit_optinfo): New member function.
(temp_dump_context::temp_dump_context): Replace
m_forcibly_enable_optinfo with call to set_json_writer.
(temp_dump_context::~temp_dump_context): Clean up any json writer.
* optinfo-emit-json.cc (class optrecord_json_writer): Move to
optinfo-emit-json.h
(the_json_writer): Delete.
(optimization_records_start): Delete.
(optimization_records_finish): Delete.
(optimization_records_enabled_p): Delete, in favor of
dump_context::optimization_records_enabled_p.
(optimization_records_maybe_record_optinfo): Delete.
(optimization_records_maybe_pop_dump_scope): Delete.
* optinfo-emit-json.h: Include "json.h".  Delete forward
decl of opt_pass.
(optimization_records_start): Delete.
(optimization_records_finish): Delete.
(optimization_records_enabled_p): Delete.
(optimization_records_maybe_record_optinfo): Delete.
(optimization_records_maybe_pop_dump_scope): Delete.
(class optrecord_json_writer): Move here from
optinfo-emit-json.cc.
* optinfo.cc (optinfo::emit_for_opt_problem): Replace call
to optinfo::emit with call to dump_context::emit_optinfo.
(optinfo::emit): Delete, in favor of dump_context::emit_optinfo.
(optinfo_enabled_p): Delete, in favor of
dump_context::optinfo_enabled_p.
(optinfo_wants_inlining_info_p): Update for conversion o
optimization_records_enabled_p to a member function of
dump_context.
* optinfo.h (optinfo_enabled_p): Delete, in favor of
dump_context::optinfo_enabled_p.
(optinfo::emit): Delete, in favor of dump_context::emit_optinfo.
* toplev.c: Include "dump-context.h".
(compile_file): Replace call to optimization_records_finish with
dump_context::finish_any_json_writer.
(do_compile): Replace call to optimization_records_start with
conditionally creating a optrecord_json_writer for the
dump_context.

From-SVN: r266279

re PR libstdc++/87855 (std::optional<T> only copy-constructible if T is trivially copy-constructible)

PR libstdc++/87855

Also implement P0602R4 (variant and optional
should propagate copy/move triviality) for std::optional.
* include/std/optional (_Optional_payload): Change
the main constraints to check constructibility in
addition to assignability.
(operator=): Make constexpr.
(_M_reset): Likewise.
(_M_construct): Likewise.
(operator->): Likewise.
* testsuite/20_util/optional/assignment/8.cc: Adjust.
* testsuite/20_util/optional/assignment/9.cc: New.

From-SVN: r266278

Fix condition in lto-symtab.c (PR lto/88077).

2018-11-19  Martin Liska  <mliska@suse.cz>

PR lto/88077
* lto-symtab.c (lto_symtab_merge): Transform the
condition before r256989.
2018-11-19  Martin Liska  <mliska@suse.cz>

PR lto/88077
* gcc.dg/lto/pr88077_0.c: New test.
* gcc.dg/lto/pr88077_1.c: New test.

From-SVN: r266277

re PR tree-optimization/88071 (ICE: verify_gimple failed (error: dead STMT in EH table))

PR tree-optimization/88071
* tree-vect-loop.c (vectorize_fold_left_reduction): Pass true instead
of false as last argument to gsi_remove.
* tree-vect-stmts.c (vect_finish_replace_stmt): Pass true instead of
false as last argument to gsi_replace.

* gcc.dg/pr88071.c: New test.

From-SVN: r266276

re PR c++/60994 (gcc does not recognize hidden/shadowed enumeration as valid nested-name-specifier)

PR c++/60994
* g++.dg/lookup/pr60994.C: New test.

From-SVN: r266275

re PR debug/87039 (DW_OP_fbreg used without a frame base on a C++ code w/ -fopenmp)

PR debug/87039
* omp-expand.c: Don't include debug.h.
(adjust_context_and_scope): Add REGION argument.  Find DECL_CONTEXT
from innermost outer parallel, task, teams or target that has a
child_fn set, or, if there is no such outer region, use
current_function_decl.  Do the DECL_CONTEXT adjustment regardless of
whether a suitable BLOCK is found or not.
(expand_parallel_call, expand_teams_call): Don't call
adjust_context_and_scope here.
(grid_expand_target_grid_body): Revert 2017-01-25 changes.
(expand_omp_taskreg, expand_omp_target): Likewise.  Call
adjust_context_and_scope.
* dwarf2out.c (dwarf2out_early_global_decl): For
decl_function_context recurse instead of calling dwarf2out_decl.

* g++.dg/gomp/pr78363-4.C: New test.
* g++.dg/gomp/pr78363-5.C: New test.
* g++.dg/gomp/pr78363-6.C: New test.
* g++.dg/gomp/pr78363-7.C: New test.

From-SVN: r266272

re PR c++/87229 (ICE: tree code 'call_expr' is not supported in LTO streams)

2018-11-19  Richard Biener  <rguenther@suse.de>

PR lto/87229
* tree.c (free_lang_data_in_one_sizepos): Free non-gimple-val
sizepos values.

* g++.dg/lto/pr87229_0.C: New testcase.

From-SVN: r266271

Fix how we match for count(n*) in gcov tests.

2018-11-19  Martin Liska  <mliska@suse.cz>

* g++.dg/gcov/pr84548.C: Remove remove-gcda.
* g++.dg/gcov/ternary.C: Likewise.
* lib/gcov.exp: Support pattern of following form:
count(1*).

From-SVN: r266270

PR libstdc++/88084 - Implement LWG 2777

* include/std/string_view (basic_string_view::copy): Use traits to
copy.
* testsuite/21_strings/basic_string_view/operations/copy/char/2.cc:
New test.
* testsuite/21_strings/basic_string_view/operations/copy/wchar_t/2.cc:
New test.

From-SVN: r266269

compare-elim.c (struct comparison): Add not_in_a field.

* compare-elim.c (struct comparison): Add not_in_a field.
(is_not): New static function.
(strip_not): Likewise.
(conforming_compare): Handle a NOT in the first operand.
(can_eliminate_compare): Likewise.
(find_comparison_dom_walker::before_dom_children): Likewise.
(try_eliminate_compare): Likewise.
* config/visium/visium.md (negsi2_insn_set_carry): Turn into...
(neg<mode>2_insn_set_carry): ...this and add missing NEG operation.

From-SVN: r266268

Fix typos in packed attribute documentation

* doc/extend.texi (Common Type Attributes): Fix typos.

From-SVN: r266267

Bump copyright year

From-SVN: r266266

* gcc-interface/cuintp.c (UI_From_gnu): Remove code for 32-bit hosts.

From-SVN: r266265

decl2.c (grokfield): Remove obsolete _vptr check; fix explicit template argument list error location.

/cp
2018-11-18  Paolo Carlini  <paolo.carlini@oracle.com>

* decl2.c (grokfield): Remove obsolete _vptr check; fix
explicit template argument list error location.

/testsuite
2018-11-18  Paolo Carlini  <paolo.carlini@oracle.com>

* g++.dg/template/crash91.C: Check location too.

From-SVN: r266264

Strenghten assumption about function start and end line (PR gcov-profile/88045).

2018-11-19  Martin Liska  <mliska@suse.cz>

PR gcov-profile/88045
* coverage.c (coverage_begin_function): Add assert.
2018-11-19  Martin Liska  <mliska@suse.cz>

PR gcov-profile/88045
* g++.dg/gcov/pr88045.C: New test.

From-SVN: r266262

Detect mixed usage of spaces and tabs.

2018-11-19  Martin Liska  <mliska@suse.cz>

* check_GNU_style_lib.py: Detect mixed usage
of spaces and tabs.

From-SVN: r266261

re PR other/40498 (no_instrument_function attribute not documented to prevent -pg instrumentation)

2018-11-18  Sandra Loosemore  <sandra@codesourcery.com>

PR other/40498

gcc/
* doc/extend.texi (Common Function Attributes): Document that
no_instrument_function applies to -p and -pg, too.
* doc/invoke.texi (Instrumentation Options): Add cross-references
to docs for -p, -pg, and -finstrument-functions.

From-SVN: r266260

Daily bump.

From-SVN: r266259

Remove unused modules from libphobos std.internal package.

libphobos/ChangeLog:

2018-11-19  Iain Buclaw  <ibuclaw@gdcproject.org>

* src/Makefile.am: Remove std.internal.digest.sha_SSSE3 and
std.internal.math.biguintx86 modules.
* src/Makefile.in: Rebuild.
* src/std/internal/digest/sha_SSSE3.d: Remove.
* src/std/internal/math/biguintx86.d: Remove.

From-SVN: r266256

PR libstdc++/83566 - cyl_bessel_j returns wrong result for x>1000

2018-11-16  Michele Pezzutti <mpezz@tiscali.it>
    Edward Smith-Rowland  <3dw4rd@verizon.net>

PR libstdc++/83566 - cyl_bessel_j returns wrong result for x>1000
for high orders.
* include/tr1/bessel_function.tcc: Perform no fewer than nu/2 iterations
of the asymptotic series (nu is the Bessel order).
* testsuite/tr1/5_numerical_facilities/special_functions/
09_cyl_bessel_j/check_value.cc: Add tests at nu=100, 1000<=x<=2000.
* testsuite/tr1/5_numerical_facilities/special_functions/
11_cyl_neumann/check_value.cc: Ditto.
* testsuite/special_functions/08_cyl_bessel_j/check_value.cc: Ditto.
* testsuite/special_functions/10_cyl_neumann/check_value.cc: Ditto.

Co-Authored-By: Edward Smith-Rowland <3dw4rd@verizon.net>
From-SVN: r266252

re PR fortran/88073 (Internal compiler error  compiling WHERE construct with -O or -O2)

2018-11-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/88073
* frontend-passes.c (combine_array_constructor): Do not do
anything if in a WHERE statement.

2018-11-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

PR fortran/88073
* gfortran.dg/where_7.f90: New test.

From-SVN: r266251

Allow target to override gnu-user.h crti and crtn

Also give target access to the gnu-user.h LINK_GCC_C_SEQUENCE_SPEC.

* config/gnu-user.h (GNU_USER_TARGET_CRTI): Define.
(GNU_USER_TARGET_STARTFILE_SPEC): Use it here.
(GNU_USER_TARGET_CRTN): Define.
(GNU_USER_TARGET_ENDFILE_SPEC): Use it here.
(GNU_USER_TARGET_LINK_GCC_C_SEQUENCE_SPEC): Define.

From-SVN: r266250

Delete !HAVE_LD_PIE variants of startfile/endfile specs

The HAVE_LD_PIE variant doesn't contain anything that will break
linking when !HAVE_LD_PIE that isn't already broken if you choose to
build PIEs with a linker that doesn't support PIE.  All this
HAVE_LD_PIE protects is the choice of different crt files, which is
more about libc capability than linker capability.

* config/gnu-user.h (GNU_USER_TARGET_STARTFILE_SPEC): Delete
!HAVE_LD_PIE variant.
(GNU_USER_TARGET_ENDFILE_SPEC): Likewise.

From-SVN: r266249

re PR fortran/70260 (ICE: gimplification failed)

2018-11-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/70260
    * expr.c (gfc_check_assign): Reject assigning to an external
    symbol.
    (gfc_check_pointer_assign): Add suppress_type_test
    argument. Insert line after if. A non-proc pointer can not point
    to a constant.  Only check types if suppress_type_test is false.
    * gfortran.h (gfc_check_pointer_assign): Add optional
    suppress_type_test argument.
    * resolve.c (gfc_resolve_code):  Move up gfc_check_pointer_assign
    and give it the extra argument.
    (resolve_fl_procedure): Set error on value for a function with
    an inizializer.

2018-11-18  Thomas Koenig  <tkoenig@gcc.gnu.org>

    PR fortran/70260
    * gfortran.dg/proc_ptr_result_5.f90:  Add dg-error directive.
    * gfortran.dg/protected_4.f90: Split line to allow for extra error.
    * gfortran.dg/protected_6.f90: Likewise.
    * gfortran.dg/assign_11.f90: New test.
    * gfortran.dg/pointer_assign_12.f90: New test.

From-SVN: r266248

Correct ChangeLog for PR31357 fix

From-SVN: r266247

re PR driver/31357 (document that --help and --help=<value> options cannot be combined.)

2018-11-17  Eric Gallager  <egallager@gcc.gnu.org>
    Sandra Loosemore  <sandra@codesourcery.com>

PR driver/31357

gcc/
* doc/invoke.texi (Overall Options): Document that --help and
--help=<value> options cannot be combined.

Co-Authored-By: Sandra Loosemore <sandra@codesourcery.com>
From-SVN: r266246

Daily bump.

From-SVN: r266245

Implement std::pmr::synchronized_pool_resource

Define the thread-safe pool resource, using a shared_mutex to allow
multiple threads to concurrently allocate from thread-specific pools.

Define new weak symbols for the pthread_rwlock_t functions, to avoid
making libstdc++.so depend on libpthread.so

When the necessary Gthread support is absent only define the
feature-test macro to 1, rather than 201603. This is intended to imply
incomplete support, because everything except synchronized_pool_resource
works.

Implement std::pmr::synchronized_pool_resource
* config/abi/pre/gnu.ver: Add new symbols.
* include/std/memory_resource [_GLIBCXX_HAS_GTHREADS]
(__cpp_lib_memory_resource): Define to expected value, 201603.
(synchronized_pool_resource): New class.
[!_GLIBCXX_HAS_GTHREADS] (__cpp_lib_memory_resource): Define to 1.
* include/std/shared_mutex (__glibcxx_rwlock_rdlock)
(__glibcxx_rwlock_tryrdlock, __glibcxx_rwlock_wrlock)
(__glibcxx_rwlock_trywrlock, __glibcxx_rwlock_unlock)
(__glibcxx_rwlock_destroy, __glibcxx_rwlock_init)
(__glibcxx_rwlock_timedrdlock, __glibcxx_rwlock_timedwrlock): Define
weak symbols for POSIX rwlock functions.
(__shared_mutex_pthread): Use weak symbols.
* include/std/version (__cpp_lib_memory_resource): Define.
* src/c++17/memory_resource.cc [_GLIBCXX_HAS_GTHREADS]
(synchronized_pool_resource::_TPools): New class.
(destroy_TPools): New function for pthread_key_create destructor.
(synchronized_pool_resource::synchronized_pool_resource)
(synchronized_pool_resource::~synchronized_pool_resource)
(synchronized_pool_resource::release)
(synchronized_pool_resource::do_allocate)
(synchronized_pool_resource::do_deallocate): Define public members.
(synchronized_pool_resource::_M_thread_specific_pools)
(synchronized_pool_resource::_M_alloc_tpools)
(synchronized_pool_resource::_M_alloc_shared_tpools): Define private
members.
* testsuite/20_util/synchronized_pool_resource/allocate.cc: New test.
* testsuite/20_util/synchronized_pool_resource/cons.cc: New test.
* testsuite/20_util/synchronized_pool_resource/is_equal.cc: New test.
* testsuite/20_util/synchronized_pool_resource/multithreaded.cc: New
test.
* testsuite/20_util/synchronized_pool_resource/release.cc: New test.
* testsuite/performance/20_util/memory_resource/pools.cc: Add
multithreaded tests using pmr::synchronized_pool_resource.

From-SVN: r266242

RISC-V: Fix epilogue unwind info with fp and single sp adjust.

gcc/
* config/riscv/riscv.c (epilogue_cfa_sp_offset): New.
(riscv_restore_reg): If restoring HARD_FRAME_POINTER_REGNUM, and
epilogue_cfa_sp_offset set, then add REG_CFA_DEF_CFA regnote.
(riscv_expand_epilogue): Initialize epilogue_cfa_sp_offset.  Set it
to step2 if frame_pointer_needed and step1 is 0.

From-SVN: r266241

re PR c++/4225 (documentation about CPLUS_INCLUDE_PATH vs. system headers incomplete)

2018-11-17  Sandra Loosemore  <sandra@codesourcery.com>

PR c++/4225

gcc/
* doc/cpp.texi (System Headers): Add note about implicit
extern "C" block on targets that define SYSTEM_IMPLICIT_EXTERN_C.

From-SVN: r266240

re PR c++/4025 (Document use/non-use of  -fno-implicit-templates in bootflags)

2018-11-17  Sandra Loosemore  <sandra@codesourcery.com>

PR c++/4025

gcc/
* doc/invoke.texi (C++ Dialect Options): Clarify usage of
-fno-implicit-templates.

From-SVN: r266239

libphobos: Add IEEE quadruple support for std.conv

Backport from upstream phobos 2.079 for AArch64.

Reviewed-on: https://github.com/dlang/phobos/pull/5965

From-SVN: r266238

re PR tree-optimization/87546 (Gcc miscompiles at -O3 on valid code)

PR tree-optimization/87546
* tree-vect-patterns.c (vect_look_through_possible_promotion): Add
min_precision variable, initially set it to orig_precision, only does
something if op_type's precision is <= min_precision and update
min_precision whenever calling set_op.

* gcc.dg/vect/O3-pr87546.c: New test.

From-SVN: r266237

re PR rtl-optimization/88018 (ICE in insert_insn_on_edge at cfgrtl.c:1952 since r255066)

PR rtl-optimization/88018
* cfgrtl.c (fixup_abnormal_edges): Guard moving insns to fallthru edge
on the presence of fallthru edge, rather than if it is a USE or not.

* g++.dg/tsan/pr88018.C: New test.

From-SVN: r266236

re PR ipa/87957 (ICE tree check: expected tree that contains ‘decl minimal’ structure, have ‘identifier_node’ in warn_odr, at ipa-devirt.c:1051 since r265519)

PR ipa/87957
* ipa-devirt.c (warn_odr): Look for main variant to get TYPE_DECL.

From-SVN: r266235