re PR middle-end/87574 (ICE in add_data_member_location_attribute at gcc/gcc/dwarf2out.c:19226 since r264943)

	PR middle-end/87574
	* cgraphunit.c (cgraph_node::expand_thunk): Force DECL_IGNORED_P on
	the thunk when expanding to GIMPLE.

From-SVN: r265028

	* constexpr.c (potential_constant_expression_1) <case FOR_STMT>: Return
	true if the condition is always false.
	<case WHILE_STMT>: Likewise.

	* g++.dg/cpp1y/constexpr-loop7.C: New test.

From-SVN: r265027

most likely by twice applying the patch which added the testcases.

This patch removes the duplicated code.

[gcc/testsuite]

2018-10-10  Paul A. Clarke  <pc@us.ibm.com>

	PR target/87579
	* gcc.target/powerpc/sse3-check.h: Remove duplicated code.
	* gcc.target/powerpc/sse3-addsubps.c: Likewise.
	* gcc.target/powerpc/sse3-addsubpd.c: Likewise.
	* gcc.target/powerpc/sse3-haddps.c: Likewise.
	* gcc.target/powerpc/sse3-hsubps.c: Likewise.
	* gcc.target/powerpc/sse3-haddpd.c: Likewise.
	* gcc.target/powerpc/sse3-hsubpd.c: Likewise.
	* gcc.target/powerpc/sse3-lddqu.c: Likewise.
	* gcc.target/powerpc/sse3-movsldup.c: Likewise.
	* gcc.target/powerpc/sse3-movshdup.c: Likewise.
	* gcc.target/powerpc/sse3-movddup.c: Likewise.
	* gcc.target/powerpc/pr37191.c: Likewise.

From-SVN: r265026

2018-10-10  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * varasm.c (mergeable_string_section): Don't try to move zero-length
        strings to the merge section.

From-SVN: r265025

gcc/testsuite/ChangeLog:
	* gcc.dg/transparent-union-6.c: New.

From-SVN: r265024

The C++17 standard requires the default implementation for
allocator_traits::max_size to return SIZE_MAX / sizeof(value_type).
That causes GCC to warn because the value could be larger than can
sensibly be passed to malloc. This patch changes the new_allocator and
malloc_allocator max_size() members to use PTRDIFF_MAX instead of
SIZE_MAX (and because they define it, the allocator_traits default isn't
used). This also changes vector::max_size to impose a sensible limit
using PTRDIFF_MAX for cases where the value from the allocator or
allocator_traits is not sensible.

	PR libstdc++/87544
	* include/bits/stl_vector.h (vector::_S_max_size): Limit size to
	PTRDIFF_MAX / sizeof(value_type).
	* include/ext/malloc_allocator.h (malloc_allocator::max_size):
	Likewise.
	* include/ext/new_allocator.h (new_allocator::max_size): Likewise.
	* testsuite/23_containers/vector/allocator/minimal.cc: Adjust
	expected value for max_size().
	* testsuite/23_containers/vector/capacity/87544.cc: New test.

From-SVN: r265021

gcc/testsuite/ChangeLog:

	* gcc.c-torture/execute/memchr-1.c: Avoid assuming 4-byte wchar_t.
	Add a test for 2-byte wchar_t.
	* gcc.dg/builtin-memchr.c: New test.

From-SVN: r265020

	PR target/87573
	* config/i386/mmx.md (const_vector 0 -> mem splitter): New splitter.

testsuite/ChangeLog:

	PR target/87573
	* gcc.target/i386/pr87573.c: New test.

From-SVN: r265019

re PR target/87550 (Intrinsics for rdpmc (__rdpmc, __builtin_ia32_rdpmc) are interpreted as pure functions)

	PR target/87550
	* config/i386/i386-builtin.def (IX86_BUILTIN_RDPMC): Move from args set
	to special_args set.

	* gcc.target/i386/pr87550.c: New test.

From-SVN: r265007

	PR c/87286
	* gcc.dg/pr87286.c: Add -Wno-psabi to dg-options.

From-SVN: r265006

sse.md (reduc_plus_scal_v8df, [...]): Merge into pattern reducing to half width and recursing and pattern terminating...

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

	* config/i386/sse.md (reduc_plus_scal_v8df, reduc_plus_scal_v4df,
	reduc_plus_scal_v2df, reduc_plus_scal_v16sf, reduc_plus_scal_v8sf,
	reduc_plus_scal_v4sf): Merge into pattern reducing to half width
	and recursing and pattern terminating the recursion on SSE
	vector width using ix86_expand_reduc.
	(reduc_sminmax_scal_<mode>): Split into part reducing to half
	width and recursing and SSE2 vector variant doing the final
	reduction with ix86_expand_reduc.
	(reduc_uminmax_scal_<mode>): Likewise for the AVX512 variants
	with terminating the recursion at AVX level, splitting that
	to SSE there.

From-SVN: r265004

From-SVN: r265003

This patch renames the "error" callback within libcpp
to "diagnostic", and uses the pair of enums in cpplib.h, rather
than passing two different kinds of "int" around.

gcc/c-family/ChangeLog:
	* c-common.c (c_option_controlling_cpp_error): Rename to...
	(c_option_controlling_cpp_diagnostic): ...this, and convert
	"reason" from int to enum.
	(c_cpp_error): Rename to...
	(c_cpp_diagnostic): ...this, converting level and reason to enums.
	* c-common.h (c_cpp_error): Rename to...
	(c_cpp_diagnostic): ...this, converting level and reason to enums.
	* c-opts.c (c_common_init_options): Update for renaming.

gcc/fortran/ChangeLog:
	* cpp.c (gfc_cpp_init_0): Update for renamings.
	(cb_cpp_error): Rename to...
	(cb_cpp_diagnostic): ...this, converting level and reason to
	enums.

gcc/ChangeLog:
	* genmatch.c (error_cb): Rename to...
	(diagnostic_cb): ...this, converting int params to enums.
	(fatal_at): Update for renaming.
	(warning_at): Likewise.
	(main): Likewise.
	* input.c (selftest::ebcdic_execution_charset::apply):
	Update for renaming of...
	(selftest::ebcdic_execution_charset::on_error): ...this, renaming
	to...
	(selftest::ebcdic_execution_charset::on_diagnostic): ...this,
	converting level and reason to enums.
	(class selftest::lexer_error_sink): Rename to...
	(class selftest::lexer_test_options): ...this, renaming field
	"m_errors" to "m_diagnostics".
	(selftest::lexer_test_options::apply): Update for renaming of...
	(selftest::lexer_test_options::on_error): ...this, renaming to...
	(selftest::lexer_test_options::on_diagnostic): ...this
	converting level and reason to enums.
	(selftest::test_lexer_string_locations_raw_string_unterminated):
	Update for renamings.
	* opth-gen.awk (struct cpp_reason_option_codes_t): Use enum for
	"reason".

libcpp/ChangeLog:
	* charset.c (noop_error_cb): Rename to...
	(noop_diagnostic_cb): ...this, converting params to enums.
	(cpp_interpret_string_ranges): Update for renaming and enums.
	* directives.c (check_eol_1): Convert reason to enum.
	(do_diagnostic): Convert code and reason to enum.
	(do_error): Use CPP_W_NONE rather than 0.
	(do_pragma_dependency): Likewise.
	* errors.c (cpp_diagnostic_at): Convert level and reason to enums.
	Update for renaming.
	(cpp_diagnostic): Convert level and reason to enums.
	(cpp_error): Convert level to enum.
	(cpp_warning): Convert reason to enums.
	(cpp_pedwarning): Likewise.
	(cpp_warning_syshdr): Likewise.
	(cpp_diagnostic_with_line): Convert level and reason to enums.
	Update for renaming.
	(cpp_error_with_line): Convert level to enum.
	(cpp_warning_with_line): Convert reason to enums.
	(cpp_pedwarning_with_line): Likewise.
	(cpp_warning_with_line_syshdr): Likewise.
	(cpp_error_at): Convert level to enum.
	(cpp_errno): Likewise.
	(cpp_errno_filename): Likewise.
	* include/cpplib.h (enum cpp_diagnostic_level): Name this enum,
	and move to before struct cpp_callbacks.
	(enum cpp_warning_reason): Likewise.
	(cpp_callbacks::diagnostic): Convert params from int to enums.
	(cpp_error): Convert int param to enum cpp_diagnostic_level.
	(cpp_warning): Convert int param to enum cpp_warning_reason.
	(cpp_pedwarning): Likewise.
	(cpp_warning_syshdr): Likewise.
	(cpp_errno): Convert int param to enum cpp_diagnostic_level.
	(cpp_errno_filename): Likewise.
	(cpp_error_with_line): Likewise.
	(cpp_warning_with_line): Convert int param to enum
	cpp_warning_reason.
	(cpp_pedwarning_with_line): Likewise.
	(cpp_warning_with_line_syshdr): Likewise.
	(cpp_error_at): Convert int param to enum cpp_diagnostic_level.
	* macro.c (create_iso_definition): Convert int to enum.
	(_cpp_create_definition): Likewise.

From-SVN: r264999

/cp
2018-10-09  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84423
	* pt.c (convert_template_argument): Immediately return error_mark_node
	if the second argument is erroneous.
	* parser.c (cp_parser_type_id): Add location_t * parameter.
	(cp_parser_type_id_1): Likewise.
	(cp_parser_alias_declaration): Adjust cp_parser_type_id call,
	obtain the location of the type and save it.
	(cp_parser_template_type_arg): Adjust.
	(cp_parser_trailing_type_id): Likewise.
	* decl.c (grokdeclarator): Improve error message for 'auto' in
	alias declaration.

/testsuite
2018-10-09  Paolo Carlini  <paolo.carlini@oracle.com>

	PR c++/84423
	* g++.dg/concepts/pr84423-1.C: New.
	* g++.dg/concepts/pr84423-2.C: Likewise.
	* g++.dg/cpp0x/auto39.C: Test location too.
	* g++.dg/cpp0x/auto9.C: Likewise.
	* g++.dg/cpp1y/pr60384.C: Likewise.

From-SVN: r264996

	* include/bits/stl_list.h
	(_List_operator<>::operator==): Replace member function with inline
	friend.
	(_List_operator<>::operator!=): Likewise.
	(_List_const_operator<>::operator==): Likewise.
	(_List_const_operator<>::operator!=): Likewise.
	(operator==(const _List_iterator<>&, const _List_const_iterator<>&)):
	Remove.
	(operator!=(const _List_iterator<>&, const _List_const_iterator<>&)):
	Remove.

From-SVN: r264993

This is part 2/2 for contributing PPC64LE support for X86 SSE3
instrisics. This patch includes testsuite/gcc.target tests for the
intrinsics defined in pmmintrin.h. 

Tested on POWER8 ppc64le and ppc64 (-m64 and -m32, the latter only reporting
10 new unsupported tests.)

[gcc/testsuite]

2018-10-09  Paul A. Clarke  <pc@us.ibm.com>

	* gcc.target/powerpc/sse3-check.h: New file.
	* gcc.target/powerpc/sse3-addsubps.c: New file.
	* gcc.target/powerpc/sse3-addsubpd.c: New file.
	* gcc.target/powerpc/sse3-haddps.c: New file.
	* gcc.target/powerpc/sse3-hsubps.c: New file.
	* gcc.target/powerpc/sse3-haddpd.c: New file.
	* gcc.target/powerpc/sse3-hsubpd.c: New file.
	* gcc.target/powerpc/sse3-lddqu.c: New file.
	* gcc.target/powerpc/sse3-movsldup.c: New file.
	* gcc.target/powerpc/sse3-movshdup.c: New file.
	* gcc.target/powerpc/sse3-movddup.c: New file.
	* gcc.target/powerpc/pr37191.c: New file.

From-SVN: r264992

This is a follow-on to earlier commits for adding compatibility implementations of x86 intrinsics for PPC64LE.

This is a follow-on to earlier commits for adding compatibility
implementations of x86 intrinsics for PPC64LE.  This is the first of
two patches.  This patch adds 11 of the 13 x86 intrinsics from
<pmmintrin.h> ("SSE3").  (Patch 2/2 adds tests for these intrinsics,
and briefly describes the tests performed.)

Implementations are relatively straightforward, with occasional
extra effort for vector element ordering.

Not implemented are _mm_wait and _mm_monitor, as there are no
direct or trivial analogs in the POWER ISA.

./gcc/ChangeLog:
2018-10-05  Paul A. Clarke  <pc@us.ibm.com>

	* config.gcc (powerpc*-*-*): Add pmmintrin.h to extra_headers.
	* config/rs6000/pmmintrin.h: New file.

From-SVN: r264991

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

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

        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: r264990

	PR tree-optimization/86659
	* gimple-match.h (gimple_match_op constructors): Initialize reverse.

From-SVN: r264986

    
    LLVM doesn't support non-call exception. This test was passing
    more or less by luck: if the faulting instruction is between two
    calls with the same landing pad (in instruction layout order,
    not the program's logic order), it generates a merged PC range
    that covers the faulting instruction. If the instruction layout
    order changes, or it uses two different (but may be degenerate)
    landing pads, this doesn't work.
    
    Reviewed-on: https://go-review.googlesource.com/c/140517

From-SVN: r264985

This change is aimed at getting rid of spurious -Wuninitialized warnings
issued for small records passed by copy and containing default values
for some of their components.

The source of the problem is that the _Init parameter of the
initialization routine is declared as an in/out parameter, so the
uninitialized object is passed by copy to it and this can be flagged by
-Wuninitialized.

That's why the mode of the parameter is changed to out, except for the
cases where information really needs to be passed in: unconstrained
array types, protected and task types.

For the following record type Rec!

 type Rec is record
    B : Boolean := True;
  end record;

the initialization routine must now be:

      procedure r__recIP (_init : out r__rec1) is
      begin
         _init.b := true;
         return;
      end r__recIP;

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_ch3.adb (Is_Null_Statement_List): New predicate.
	(Build_Array_Init_Proc): Use it to find out whether the
	initialization procedure Is_Null_Init_Proc; if so, set
	Warnings_Off on the parameter.
	(Build_Init_Procedure): Likewise.
	(Init_Formals): Use an in/out first parameter only for
	unconstrained arrays and for records either containing or built
	for proteced types or task types; use an out parameter in all
	the other cases.
	* fe.h (Is_Init_Proc): Declare.
	* gcc-interface/decl.c (type_requires_init_of_formal): Do not
	return true for a discriminant in an unchecked union.
	(gnat_to_gnu_param): Do not create a PARM_DECL for the Out
	parameter of an initialization procedure.

From-SVN: r264984

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/decl.c (gnat_to_gnu_entity) <E_Constant>: If
	this is not a definition, retrieve the expression in all cases
	even if we are just annotating types.
	* gcc-interface/trans.c (gnat_to_gnu): Also translate Size
	attribute for constrained types in this mode.

From-SVN: r264983

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* adaint.c (__gnat_get_executable_suffix_ptr): Add new line.
	(__gnat_locate_exec): Check that HOST_EXECUTABLE_SUFFIX is not
	empty before doing a string search for it.
	* socket.c (ATTRIBUTE_UNUSED): Define.
	(__gnat_disable_sigpipe): Add ATTRIBUTE_UNUSED on parameter.
	* terminals.c (ATTRIBUTE_UNUSED): Move around.
	(__gnat_setup_child_communication): Add ATTRIBUTE_UNUSED on
	parameter.
	(__gnat_send_header): Add ATTRIBUTE_UNUSED on parameters.

From-SVN: r264982

GNATprove does not have sometimes the precise information of the
compiler about size of types and objects, so that it cannot evaluate the
expressions in pragma Compile_Time_Error/Warning the same way the
compiler does.  Thus, these pragmas should be ignored in GNATprove mode,
as it can neither verify them nor assume them (if the expression cannot
be evaluated at compile time, then the semantics for GNAT is to ignore
them).

2018-10-09  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_prag.adb (Process_Compile_Time_Warning_Or_Error): Rewrite
	pragmas as null statements in GNATprove mode.

From-SVN: r264981

This fixlet gets rid of a spurious error issued in the specific case of
a call to a subprogram taking an Out parameter of a discriminated record
type without default discriminants, if the actual parameter is the
result of the conversion to the record type of a variable whose type is
derived from the record and has a representation clause.

The compiler was failing to initialize the temporary made around the
call because of the representation clause, but this is required for a
type with discriminants because discriminants may be read by the called
subprogram.

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_ch6.adb (Add_Call_By_Copy_Code): Initialize the temporary
	made for an Out parameter if the formal type has discriminants.

gcc/testsuite/

	* gnat.dg/derived_type5.adb, gnat.dg/derived_type5_pkg.ads: New
	testcase.

From-SVN: r264980

2018-10-09  Maroua Maalej  <maalej@adacore.com>

gcc/ada/

	* sem_spark.adb (Check_Declaration): fix bug related to non
	access object permissions.

From-SVN: r264979

2018-10-09  Doug Rupp  <rupp@adacore.com>

gcc/ada/

	* libgnat/a-ncelfu.ads: Fix name in header to match package.

From-SVN: r264978

The back-end was recently changed to issue more -Wuninitialized warnings
on Out parameters and this has caught a case related to
Ada.Iterator_Interface.: This patchlet simply kills this uninteresting
warning.

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* exp_disp.adb (Make_Disp_Asynchronous_Select_Spec): Set
	Warnings_Off on the B out parameter.

gcc/testsuite/

	* gnat.dg/warn17.adb: New testcase.

From-SVN: r264977

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* einfo.ads: Small comment fix.

From-SVN: r264976

This fixes a recent regression introduced in the compiler for the
inlined renaming of a subprogram instantiated in a package body.  It was
wrongly clearing the Is_Public flag on the entity associated with the
body.

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* sem_ch7.adb (Has_Referencer): Add comment for the
	N_Freeze_Entity case.  Do not rely on
	Has_Referencer_Of_Non_Subprograms to clear the Is_Public flag on
	subprogram entities.

gcc/testsuite/

	* gnat.dg/inline14.adb, gnat.dg/inline14_pkg.adb,
	gnat.dg/inline14_pkg.ads: New testcase.

From-SVN: r264975

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.adb (In_Synchronized_Call): Handle properly private
	types whose full views are synchronized types, in order to
	recognize generated subprograms whose bodies must be considered
	reachable even if no direct calls to them are visible in the
	source.

From-SVN: r264974

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_ch4.adb (Expand_Modular_Op): When expanding an operation
	on nonbinary modular types, convert the opersnds to an integer
	type that is large enough to hold the modulus of the type, which
	may be larger than Integer'Last.

From-SVN: r264973

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.adb (Unnest_Subprogram):  When an uplevel reference
	is to an unconstrained formal, the 'Access reference that is
	created to initialize the corresponding component of the
	activation record must be wrapped in an unchecked conversion to
	the generated type of the component. Otherwise, spurious suvtype
	conformance errors will be generated when the code is within an
	instantiation and the type of the formal is a formal type of the
	enclosing generic. Note that during unnesting there is no simple
	way to determine that the code appears within an instance
	because ther is no scope stack.

From-SVN: r264972

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/decl.c (type_requires_init_of_formal): New
	predicate.
	(gnat_to_gnu_param): Use it to determine whether a PARM_DECL
	must be created for an Out parameter passed by copy.

From-SVN: r264971

2018-10-09  Arnaud Charlet  <charlet@adacore.com>

gcc/ada/

	* libgnat/a-coboho.ads (Storage_Element): Fix a typo.

From-SVN: r264970

2018-10-09  Claire Dross  <dross@adacore.com>

gcc/ada/

	* libgnat/a-cfinve.ads: Remove default value for
	Max_Size_In_Storage_Elements as it was not supported in SPARK.

From-SVN: r264969

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_ch6.adb (Add_Call_By_Copy_Node,
	Add_Simple_Call_By_Copy_Node, Expand_Call_Helper): Reset
	Is_True_Constant on entities used as Out or In_Out parameters in
	calls.

From-SVN: r264968

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.adb (Unnest_Subprogram): Do not load System to obtain
	the Address entity unless an activation record is being built.
	Removes useless with_clauses for System when nested subprograms
	do not have uplevel references, and therefore do not need
	activation records.

From-SVN: r264967

This patch removes an improper error message on a visibility change in
an aspect expression between the freeze point and the end of the
declaration list, when the expression involves a call to a instance of
Unchecked_Conversion and the enclosing package declaration has a package
body with multiple subprogram bodies.

The following must compile quietly:

----
package body Par.Rep is
   procedure Nothing is begin null; end;
   procedure Rien is begin null; end;
end;
----
with Par.Loc;
package Par.Rep is
   type Rec is record
      X, Y : Integer;
   end record
      with Volatile;

   Thing2 : Unsigned_32 := 15;
   Thing3 : Rec
    with Volatile, Address => To_Address (Par.Loc.Flash_Base);
    procedure Nothing;
end;
----
pragma Restrictions (No_Elaboration_Code);
with interfaces;  use interfaces;
pragma unreferenced (interfaces);
with Tp;       use Tp;
pragma unreferenced (Tp);
package Par is
end Par;
----
with Ada.Unchecked_Conversion;
with System;
with Interfaces; use Interfaces;
package Tp is
subtype system_address is unsigned_32;
   function to_address is new
      ada.unchecked_conversion (system_address, system.address);
   function To_32 is new
      ada.unchecked_conversion (System.Address, System_Address);
end;
----
with TP; use TP;
package Par.Loc is
FLASH_BASE        : constant system_address := 16#0800_0000#;
end;

2018-10-09  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_ch6.adb (Fully_Conformant_Expressions): Handle properly
	the conformance check on an aspect expression that includes a
	call to an instance of Unchecked_Conversion, or more generally a
	call to an intrinsic operation.

From-SVN: r264966

2018-10-09  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* repinfo.adb: Remove with/use clause for Stand.
	(List_Mechanisms): List the mechanism of functions only.

From-SVN: r264965