2018-10-12  Olivier Hainque  <hainque@adacore.com>

        * config/rs6000/ibm-ldouble.c: Augment the toplevel guard with
        defined (__FLOAT128_TYPE__) || defined (__LONG_DOUBLE_128__).

From-SVN: r265135

	    * config/pdp11/pdp11.md (doloop_end): New expander.
	    (doloop_end_insn): renamed from "doloop_end".
	    (addqi3): New pattern.
	    (subqi3): New pattern.
	    * config/pdp11/predicates.md (incdec_operand): New predicate.

From-SVN: r265132

	PR middle-end/81376

	gcc/
	* real.c (format_helper::can_represent_integral_type_p): New function
	* real.h (format_helper::can_represent_integral_type_p): Ditto.
	* match.pd: New pattern.

	gcc/testsuite/
	* c-c++-common/pr81376.c: New test.
	* gcc.target/i386/387-ficom-2.c: Update test.
	* gcc.target/i386/387-ficom-2.c: Ditto.

From-SVN: r265131

Add a configure knob for mingw32 and 64 toolchains to default passing
--large-address-aware to the linker, when creating 32-bit binaries.
-Wl,--disable-large-address-aware can still reverse its effects.

for  gcc/ChangeLog

	* configure.ac: Introduce --enable-large-address-aware
	to define MINGW_DEFAULT_LARGE_ADDR_AWARE.
	* doc/install.texi: Document it.
	* configure, config.in: Rebuilt.
	* config/i386/mingw32.h (LINK_SPEC_LARGE_ADDR_AWARE): Define,
	based on MINGW_DEFAULT_LARGE_ADDR_AWARE.
	(LINK_SPEC): Insert it.
	* config/i386/mingw-264.h: Likewise.

From-SVN: r265130

HAVE_GAS_ALIGNED_COMM is referenced in an initializer in cygming.opt,
but it's not guaranteed to be defined by configure, so define it to
zero in a cygming-specific header if it's not defined.

for  gcc/ChangeLog

	* cygming.h (HAVE_GAS_ALIGNED_COMM): Fallback-define.

From-SVN: r265129

https://gcc.gnu.org/ml/gcc-patches/2018-10/msg00788.html
	* parser.h (struct cp_parser): Drop implicit_extern_c.
	* parser.c (cp_debug_parser): Drop implicit_extern_c.
	(cp_parser_new): Likewise.
	(cp_parser_translation_unit): Handle implicit extern c here.  Call
	cp_parser_toplevel_declaration.
	(cp_parser_toplevel_declaration): New, broken out of ...
	(cp_parser_declaration_seq_opt): ... here.  Call it.  Drop
	implicit extern C handling.

From-SVN: r265127

        PR fortran/87597
        * expr.c (gfc_simplify_expr): Avoid simplifying
        the 'array' argument to lbound/ubound/lcobound/
        ucobound.

        PR fortran/87597
        * gfortran.dg/inline_matmul_24.f90: New.

From-SVN: r265126

        PR fortran/58787
        * decl.c (get_proc_name): Return with error before
        creating sym_tree.

        PR fortran/58787
        * gfortran.dg/goacc/pr77765.f90: Modify dg-error.
        * gfortran.dg/interface_42.f90: Ditto.
        * gfortran.dg/internal_references_1.f90: Ditto.
        * gfortran.dg/invalid_procedure_name.f90: Ditto.
        * gfortran.dg/pr65453.f90: Ditto.
        * gfortran.dg/pr77414.f90: Ditto.
        * gfortran.dg/pr78741.f90: Ditto.
        * gfortran.dg/same_name_2.f90: Ditto.

From-SVN: r265125

	PR rtl-optimization/87600
	* ira-lives (non_conflicting_reg_copy_p): Disable for non LRA targets.

From-SVN: r265113

	* doc/md.texi (doloop_end): Document that the pattern code may
	need to check operand mode.

From-SVN: r265102

	* include/Makefile.am: Add new headers.
	* include/Makefile.in: Regenerate.
	* include/experimental/bits/net.h: New header for common
	implementation details of Networking TS.
	* include/experimental/buffer: New header.
	* include/experimental/executor: New header.
	* include/experimental/internet: New header.
	* include/experimental/io_context: New header.
	* include/experimental/net: New header.
	* include/experimental/netfwd: New header.
	* include/experimental/socket: New header.
	* include/experimental/timer: New header.
	* testsuite/experimental/net/buffer/arithmetic.cc: New test.
	* testsuite/experimental/net/buffer/const.cc: New test.
	* testsuite/experimental/net/buffer/creation.cc: New test.
	* testsuite/experimental/net/buffer/mutable.cc: New test.
	* testsuite/experimental/net/buffer/size.cc: New test.
	* testsuite/experimental/net/buffer/traits.cc: New test.
	* testsuite/experimental/net/execution_context/use_service.cc: New
	test.
	* testsuite/experimental/net/headers.cc: New test.
	* testsuite/experimental/net/internet/address/v4/comparisons.cc: New
	test.
	* testsuite/experimental/net/internet/address/v4/cons.cc: New test.
	* testsuite/experimental/net/internet/address/v4/creation.cc: New
	test.
	* testsuite/experimental/net/internet/address/v4/members.cc: New
	test.
	* testsuite/experimental/net/internet/resolver/base.cc: New test.
	* testsuite/experimental/net/internet/resolver/ops/lookup.cc: New
	test.
	* testsuite/experimental/net/internet/resolver/ops/reverse.cc: New
	test.
	* testsuite/experimental/net/timer/waitable/cons.cc: New test.
	* testsuite/experimental/net/timer/waitable/dest.cc: New test.
	* testsuite/experimental/net/timer/waitable/ops.cc: New test.

From-SVN: r265080

The popcount expansion uses SIMD instructions acting on 64-bit values.
As a result a popcount of a 32-bit integer requires zero-extension before 
moving the zero-extended value into an FP register.  This patch adds
support for zero-extended int->FP moves to avoid the redundant uxtw.
Similarly, add support for 32-bit zero-extending load->FP register
and 32-bit zero-extending FP->FP and FP->int moves.
Add a missing 'fp' arch attribute to the related 8/16-bit pattern and
fix an incorrect type attribute.

To complete zero-extended load support, add a new alternative to 
load_pair_zero_extendsidi2_aarch64 to support LDP into FP registers too.

int f (int a)
{
  return __builtin_popcount (a);
}

Before:
	uxtw	x0, w0
	fmov	d0, x0
	cnt	v0.8b, v0.8b
	addv	b0, v0.8b
	fmov	w0, s0
	ret

After:
	fmov	s0, w0
	cnt	v0.8b, v0.8b
	addv	b0, v0.8b
	fmov	w0, s0
	ret

Passes regress & bootstrap on AArch64.

    gcc/
	* config/aarch64/aarch64.md (zero_extendsidi2_aarch64): Add alternatives
	to zero-extend between int and floating-point registers.
	(load_pair_zero_extendsidi2_aarch64): Add alternative for zero-extended
	ldp into floating-point registers.  Add type and arch attributes.
	(zero_extend<SHORT:mode><GPI:mode>2_aarch64): Add arch attribute.
	Use f_loads for type attribute.

    testsuite/
	* gcc.target/aarch64/popcnt.c: Test zero-extended popcount.
	* gcc.target/aarch64/vec_zeroextend.c: Test zero-extended vectors.

From-SVN: r265079

2018-10-12  Christophe Lyon  <christophe.lyon@linaro.org>

	PR c++/87364
	* c-pretty-print.c (c_pretty_printer::constant): Fix typo.

From-SVN: r265078

re PR c++/87364 (Pretty print of enumerator never prints the id, always falls back to C-style cast output)

	PR c++/87364
	* c-pretty-print.h (pp_c_type_cast): Prototype.
	(pp_c_integer_constant): Likewise.
	* c-pretty-print.c (pp_c_type_cast): No longer static.
	(pp_c_integer_constant): Likewise.
	(pp_c_enumeration_constant): Fix loop termination when finding
	name of constant.  No longer returns a value.  Call
	pp_c_integer_constant.
	(c_pretty_printer::constant): Update for changes to
	pp_c_enumeration_constant.

	PR c++/87364
	* cxx-pretty-print.c (pp_cxx_enumeration_constant): New function.
	(cxx_pretty_printer::constant): Use it.

From-SVN: r265077

gcc/ChangeLog:

	* doc/extend.texi (attribute packed): Correct typos.

From-SVN: r265076

gcc/ChangeLog:

	* doc/extend.texi (attribute flatten): Mention interaction with
	noinline.

From-SVN: r265075

	PR target/87156
	* cgraphclones.c (cgraph_node::create_version_clone_with_body):
	Set new_decl virtual flag to zero.

From-SVN: r265074

gcc/ChangeLog:

	* doc/extend.texi (attribute format_arg): Discuss using multiple
	attributes on a single function.

From-SVN: r265073

From-SVN: r265072

It's not safe to assume that malloc(n) returns memory aligned to more
than n, so when relying on the guaranteed alignment of malloc ensure
that the number of bytes allocated is at least as large as the
alignment.

	PR libstdc++/77691
	* include/experimental/memory_resource (__resource_adaptor_imp): Do
	not allocate sizes smaller than alignment when relying on guaranteed
	alignment.
	* testsuite/experimental/memory_resource/new_delete_resource.cc:
	Adjust expected number of bytes allocated for alignof(max_align_t).

From-SVN: r265068

[testsuite]

2018-10-10  Will Schmidt  <will_schmidt@vnet.ibm.com>

	* gcc.target/powerpc/fold-vec-insert-char-p8.c: New.
	* gcc.target/powerpc/fold-vec-insert-char-p9.c: New.
	* gcc.target/powerpc/fold-vec-insert-double.c: New.
	* gcc.target/powerpc/fold-vec-insert-float-p8.c: New.
	* gcc.target/powerpc/fold-vec-insert-float-p9.c: New.
	* gcc.target/powerpc/fold-vec-insert-int-p8.c: New.
	* gcc.target/powerpc/fold-vec-insert-int-p9.c: New.
	* gcc.target/powerpc/fold-vec-insert-longlong.c: New.
	* gcc.target/powerpc/fold-vec-insert-short-p8.c: New.
	* gcc.target/powerpc/fold-vec-insert-short-p9.c: New.

From-SVN: r265067

[testsuite]
	* gcc.target/powerpc/fold-vec-extract-char.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-char.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-char.p9.c: New.
	* gcc.target/powerpc/fold-vec-extract-double.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-double.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-double.p9.c: New.
	* gcc.target/powerpc/fold-vec-extract-float.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-float.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-float.p9.c: New.
	* gcc.target/powerpc/fold-vec-extract-int.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-int.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-int.p9.c: New.
	* gcc.target/powerpc/fold-vec-extract-longlong.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-longlong.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-longlong.p9.c: New.
	* gcc.target/powerpc/fold-vec-extract-short.p7.c: New.
	* gcc.target/powerpc/fold-vec-extract-short.p8.c: New.
	* gcc.target/powerpc/fold-vec-extract-short.p9.c: New.

From-SVN: r265066

[testsuite]

2018-10-11  Will Schmidt  <will_schmidt@vnet.ibm.com>

	* gcc.target/powerpc/fold-vec-select-char.c: New.
	* gcc.target/powerpc/fold-vec-select-double.c: New.
	* gcc.target/powerpc/fold-vec-select-float.c: New.
	* gcc.target/powerpc/fold-vec-select-int.c: New.
	* gcc.target/powerpc/fold-vec-select-longlong.c: New.
	* gcc.target/powerpc/fold-vec-select-short.c: New.

From-SVN: r265065

	PR tree-optimization/86829
	* match.pd (sin (atan (x))): New simplification rules.
	(cos (atan (x))): Likewise.
	* real.c (build_sinatan_real): New function.
	* real.h (build_sinatan_real): Prototype.

	PR tree-optimization/86829
	* gcc.dg/sinatan-1.c: New test.
	* gcc.dg/sinatan-2.c: New test.
	* gcc.dg/sinatan-3.c: New test.

From-SVN: r265064

[gcc]

2018-10-09  Will Schmidt <will_schmidt@vnet.ibm.com>

	* config/rs6000/rs6000.c (map_to_integral_tree_type): New helper
	function.
	(fold_mergeeo_helper): New helper function.
	(rs6000_gimple_fold_builtin): Add hooks for vec_mergee and vec_mergeo
	intrinsics.  Correct some whitespace indentation issues.

From-SVN: r265063

[testsuite]

2018-10-09  Will Schmidt  <will_schmidt@vnet.ibm.com>

	* gcc.target/powerpc/fold-vec-mergeeo-floatdouble.c: New.
	* gcc.target/powerpc/fold-vec-mergeeo-int.c: New.
	* gcc.target/powerpc/fold-vec-mergeeo-longlong.c: New.

From-SVN: r265062

	* include/debug/forward_list
	(forward_list<>::before_begin()): Use C++11 direct initialization.
	(forward_list<>::begin()): Likewise.
	(forward_list<>::end()): Likewise.
	(forward_list<>::cbefore_begin()): Likewise.
	(forward_list<>::cbegin()): Likewise.
	(forward_list<>::cend()): Likewise.
	(forward_list<>::emplace_after<>(const_iterator, _Args&&...)): Likewise.
	(forward_list<>::insert_after(const_iterator, const _Tp&)): Likewise.
	(forward_list<>::insert_after(const_iterator, _Tp&&)): Likewise.
	(forward_list<>::insert_after(const_iterator, size_type, const _Tp&)):
	Likewise.
	(forward_list<>::insert_after(const_iterator, initializer_list<>)):
	Likewise.
	(forward_list<>::erase_after(const_iterator)): Likewise.
	(forward_list<>::erase_after(const_iterator, const_iterator)): Likewise
	and ensure consistent iterator comparison.

From-SVN: r265061

	* include/bits/forward_list.h
	(_Fwd_list_iterator<>::operator==): Replace member function with inline
	friend.
	(_Fwd_list_iterator<>::operator!=): Likewise.
	(_Fwd_list_const_iterator<>::operator==): Likewise.
	(_Fwd_list_const_iterator<>::operator!=): Likewise.
	(operator==(const _Fwd_list_iterator<>&,
	const _Fwd_list_const_iterator<>&)): Remove.
	(operator!=(const _Fwd_list_iterator<>&,
	const _Fwd_list_const_iterator<>&)): Remove.
	(forward_list<>::_Node): Take typedef from base type.
	(forward_list<>::iterator): Likewise.
	(forward_list<>::const_iterator): Likewise.

From-SVN: r265060

2018-10-11  Tobias Burnus <burnus@net-b.de>

        Revert:
        2018-10-09  Tobias Burnus <burnus@net-b.de>

        PR fortran/83522
        * resolve.c (resolve_ref): Reject nonscalar
        substring references.

2018-10-11  Tobias Burnus <burnus@net-b.de>

        Revert:
        2018-10-09  Tobias Burnus <burnus@net-b.de>

        PR fortran/83522
        * gfortran.dg/actual_array_substr_1.f90: Add dg-error,
        change to dg-do compile.
        * gfortran.dg/actual_array_substr_2.f90: Ditto.
        * gfortran.dg/array_initializer_1.f90: Use array
        element not size-one section.
        * gfortran.dg/array_substring.f90: New.

From-SVN: r265059

As mentioned in PR87511, the shift used in aarch64_mask_and_shift_for_ubfiz_p
should be evaluated as a HOST_WIDE_INT rather than int.

Passes bootstrap & regress.

    gcc/
	PR target/87511
	* config/aarch64/aarch64.c (aarch64_mask_and_shift_for_ubfiz_p):
	Use HOST_WIDE_INT_1U for shift.

    testsuite/
	PR target/87511
	* gcc.target/aarch64/pr87511.c: Add new test.

From-SVN: r265058

PR c++/84993 identifies a problem with our suggestions for
misspelled member names in the C++ FE for the case where the
member is private.

For example, given:

class foo
{
public:
  double get_ratio() const { return m_ratio; }

private:
  double m_ratio;
};

void test(foo *ptr)
{
  if (ptr->ratio >= 0.5)
    ;// etc
}

...we currently emit this suggestion:

<source>: In function 'void test(foo*)':
<source>:12:12: error: 'class foo' has no member named 'ratio'; did you mean 'm_ratio'?
   if (ptr->ratio >= 0.5)
            ^~~~~
            m_ratio

...but if the user follows this suggestion, they get:

<source>: In function 'void test(foo*)':
<source>:12:12: error: 'double foo::m_ratio' is private within this context
   if (ptr->m_ratio >= 0.5)
            ^~~~~~~
<source>:7:10: note: declared private here
   double m_ratio;
          ^~~~~~~
<source>:12:12: note: field 'double foo::m_ratio' can be accessed via 'double foo::get_ratio() const'
   if (ptr->m_ratio >= 0.5)
            ^~~~~~~
            get_ratio()

It feels wrong to be emitting a fix-it hint that doesn't compile, so this
patch adds the accessor fix-it hint logic to this case, so that we directly
offer a valid suggestion:

<source>: In function 'void test(foo*)':
<source>:12:12: error: 'class foo' has no member named 'ratio'; did you mean
'double foo::m_ratio'? (accessible via 'double foo::get_ratio() const')
   if (ptr->ratio >= 0.5)
            ^~~~~
            get_ratio()

gcc/cp/ChangeLog:
	PR c++/84993
	* call.c (enforce_access): Move diagnostics to...
	(complain_about_access): ...this new function.
	* cp-tree.h (class access_failure_info): Rename split out field
	"m_field_decl" into "m_decl" and "m_diag_decl".
	(access_failure_info::record_access_failure): Add tree param.
	(access_failure_info::was_inaccessible_p): New accessor.
	(access_failure_info::get_decl): New accessor.
	(access_failure_info::get_diag_decl): New accessor.
	(access_failure_info::get_any_accessor): New member function.
	(access_failure_info::add_fixit_hint): New static member function.
	(complain_about_access): New decl.
	* typeck.c (access_failure_info::record_access_failure): Update
	for change to fields.
	(access_failure_info::maybe_suggest_accessor): Split out into...
	(access_failure_info::get_any_accessor): ...this new function...
	(access_failure_info::add_fixit_hint): ...and this new function.
	(finish_class_member_access_expr): Split out "has no member named"
	error-handling into...
	(complain_about_unrecognized_member): ...this new function, and
	check that the guessed name is accessible along the access path.
	Only provide a spell-correction fix-it hint if it is; otherwise,
	attempt to issue an accessor fix-it hint.

gcc/testsuite/ChangeLog:
	PR c++/84993
	* g++.dg/torture/accessor-fixits-9.C: New test.

From-SVN: r265056

https://gcc.gnu.org/ml/gcc-patches/2018-10/msg00689.html
	cp/
	* parser.c (cp_parser_translation_unit): Return void.  Don't fail
	at first extra }, simplify logic.
	(c_parse_file): Call finish_translation_unit here.

	testsuite/
	* g++.dg/parse/close-brace.C: New.
	* g++.dg/cpp0x/noexcept16.C: Avoid warning.
	* g++.old-deja/g++.other/crash32.C: Add another error

From-SVN: r265055

2018-10-11  Doug Rupp  <rupp@adacore.com>
            Olivier Hainque  <hainque@adacore.com>

        * config/rs6000/vxworks.h (VXWORKS_RELAX_LINK_SPEC): New macro.
        Pass --relax to the linker for RTPs.
        (LINK_SPEC): Append VXWORKS_RELAX_LINK_SPEC.

Co-Authored-By: Olivier Hainque <hainque@adacore.com>

From-SVN: r265054

	PR c++/85070
	* g++.dg/cpp0x/pr85070.C: Change effective target for diagnostics from
	c++14_only to c++14.

From-SVN: r265052

Mismatched dg-{begin|end}-multiline-output directives are currently
silently ignored, leading to difficult-to-diagnose test failures
involving excess output.

This patch makes multiline.exp complain about them.

gcc/testsuite/ChangeLog:
	* lib/multiline.exp (dg-begin-multiline-output): Issue an error if
	there hasn't been a dg-end-multiline-output since the last
	dg-begin-multiline-output.
	(dg-end-multiline-output): Issue an error if there hasn't been a
	dg-begin-multiline-output.  Reset _multiline_last_beginning_line
	as soon possible.  Rename "line" to "last_line".

From-SVN: r265046

Avoid a system call when no sleep is required. Sleep in a loop (actually
two loops) to handle interruption by signals.

	PR libstdc++/80538
	* src/c++11/thread.cc (this_thread::__sleep_for)
	[_GLIBCXX_HAVE_SLEEP]: Only call sleep for non-zero values.
	Loop while sleep call is interrupted and until steady_clock
	shows requested duration has elapsed.
	(!_GLIBCXX_HAVE_USLEEP]: Use the _GLIBCXX_HAVE_SLEEP code path, but
	avoiding the usleep call.
	* testsuite/30_threads/this_thread/60421.cc: Test repeated
	signal interruptions.

From-SVN: r265044

GCN's 64-lane vectors tend to make RTL dumps very long.  This patch makes them
far more bearable by eliding long sequences of the same element into "repeated"
messages.

This also takes care of reading repeated sequences in the RTL front-end.

There are self tests for both reading and writing.

2018-10-11  Andrew Stubbs  <ams@codesourcery.com>
	    Jan Hubicka  <jh@suse.cz>
	    Martin Jambor  <mjambor@suse.cz>

	gcc/
	* print-rtl.c (print_rtx_operand_codes_E_and_V): Print how many times
	the same elements are repeated rather than printing all of them.
	* read-rtl.c (rtx_reader::read_rtx_operand): Recognize and expand
	"repeated" elements.
	* read-rtl-function.c (test_loading_repeat): New function.
	(read_rtl_function_c_tests): Call test_loading_repeat.
	* rtl-tests.c (test_dumping_repeat): New function.
	(rtl_tests_c_tests): Call test_dumping_repeat.

	gcc/testsuite/
	* selftests/repeat.rtl: New file.

Co-Authored-By: Jan Hubicka <jh@suse.cz>
Co-Authored-By: Martin Jambor <mjambor@suse.cz>

From-SVN: r265042

	PR c++/87582
	* typeck.c (maybe_warn_about_returning_address_of_local): If
	whats_returned is a structured binding identifier and the structured
	binding is a reference, recurse on its initializer.

	* g++.dg/cpp1z/decomp48.C: New test.

From-SVN: r265041

Consider:

demo.c: In function 'test':
demo.c:5:40: error: macro "LOG_2" requires 3 arguments, but only 2 given
5 |   LOG_2 ("loading file: %s\n", filename);
  |                                        ^

This patch adds a note showing the definition of the macro in
question, giving:

demo.c: In function 'test':
demo.c:5:40: error: macro "LOG_2" requires 3 arguments, but only 2 given
5 |   LOG_2 ("loading file: %s\n", filename);
  |                                        ^
In file included from demo.c:1:
logging.h:1: note: macro "LOG_2" defined here
1 | #define LOG_2(FMT, ARG0, ARG1) do { fprintf (stderr, (FMT), (ARG0), (ARG1)); }
  | 

gcc/testsuite/ChangeLog:
	* g++.dg/diagnostic/macro-arg-count.C: Move to...
	* c-c++-common/cpp/macro-arg-count-1.c: ...here, generalizing
	output for C vs C++.  Expect notes showing the definitions of the
	macros.
	* c-c++-common/cpp/macro-arg-count-2.c: New test, adapted from the
	above.

libcpp/ChangeLog:
	* macro.c (_cpp_arguments_ok): If the argument count is wrong, add
	a note showing the definition of the macro.

From-SVN: r265040

2018-10-11  Richard Biener  <rguenther@suse.de>

	* config/i386/x86-tune-costs.h (bdver?_memcpy, bdver?_memset,
	bdver?_cost): Unify to ...
	(bdver_memcpy, bdver_memset, bdver_cost): ... this.
	* config/i386/i386.c (processor_cost_table): Adjust.

From-SVN: r265038