From-SVN: r261050

    
    Reviewed-on: https://go-review.googlesource.com/115196

From-SVN: r261041

Patch for PR83026

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78809
Inline strcmp with small constant strings

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83026
missing strlen optimization for strcmp of unequal strings

The design doc for PR78809 is at:
https://www.mail-archive.com/gcc@gcc.gnu.org/msg83822.html

this patch is for the second part of change of PR78809 and PR83026:

B. for strncmp (s1, s2, n) (!)= 0 or strcmp (s1, s2) (!)= 0

   B.1. (PR83026) When the lengths of both arguments are constant and
        it's a strcmp:
      * if the lengths are NOT equal, we can safely fold the call
        to a non-zero value.
      * otherwise, do nothing now.

   B.2. (PR78809) When the length of one argument is constant, try to replace
   the call with a __builtin_str(n)cmp_eq call where possible, i.e:

   strncmp (s, STR, C) (!)= 0 in which, s is a pointer to a string, STR is a
   string with constant length, C is a constant.
     if (C <= strlen(STR) && sizeof_array(s) > C)
       {
         replace this call with
         __builtin_strncmp_eq (s, STR, C) (!)= 0
       }
     if (C > strlen(STR)
       {
         it can be safely treated as a call to strcmp (s, STR) (!)= 0
         can handled by the following strcmp.
       }

   strcmp (s, STR) (!)= 0 in which, s is a pointer to a string, STR is a
   string with constant length.
     if  (sizeof_array(s) > strlen(STR))
       {
         replace this call with
         __builtin_strcmp_eq (s, STR, strlen(STR)+1) (!)= 0
       }

   later when expanding the new __builtin_str(n)cmp_eq calls, first expand them
   as __builtin_memcmp_eq, if the expansion does not succeed, change them back
   to call to __builtin_str(n)cmp.

adding test case strcmpopt_2.c and strcmpopt_4.c into gcc.dg for part B of
PR78809 adding test case strcmpopt_3.c into gcc.dg for PR83026

From-SVN: r261039

	PR target/85984
	* bb-reorder.c (pass_partition_blocks::gate): Return false for
	functions with naked attribute.

	* gcc.target/i386/pr85984.c: New test.

From-SVN: r261037

	PR target/85591
	* config/i386/cpuinfo.c (get_amd_cpu): Return
	AMDFAM15H_BDVER2 for AMDFAM15H model 0x2.

From-SVN: r261036

	PR libstdc++/78870 support std::filesystem on Windows
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Check for link, readlink and symlink.
	* include/bits/fs_path.h (path::operator/=(const path&)): Move
	definition out of class body.
	(path::is_absolute(), path::_M_append(path)): Likewise.
	(operator<<(basic_ostream, const path&)): Use std::quoted directly.
	(operator>>(basic_istream, path&)): Likewise.
	(u8path): Reorder definitions and fix Windows implementation.
	(path::is_absolute()): Define inline and fix for Windows.
	[!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
	Define POSIX version inline.
	(path::_M_append(path)): Define inline.
	* include/experimental/bits/fs_path.h (path::is_absolute()): Move
	definition out of class body.
	(operator<<(basic_ostream, const path&)): Fix type of delimiter and
	escape characters.
	(operator>>(basic_istream, path&)): Likewise.
	(path::is_absolute()): Define inline and fix for Windows.
	* src/filesystem/dir-common.h (__gnu_posix): New namespace.
	(__gnu_posix::char_type, __gnu_posix::DIR, __gnu_posix::dirent)
	(__gnu_posix::opendir, __gnu_posix::readdir, __gnu_posix::closedir):
	Define as adaptors for Windows functions/types or as
	using-declarations for POSIX functions/types.
	(_Dir_base, get_file_type): Qualify names to use declarations from
	__gnu_posix namespace.
	(_Dir_base::is_dor_or_dotdot): New helper functions.
	* src/filesystem/dir.cc (_Dir, recursive_directory_iterator): Qualify
	names to use declarations from __gnu_posix namespace.
	* src/filesystem/ops-common.h (__gnu_posix): New nested namespace.
	(__gnu_posix::open, __gnu_posix::close, __gnu_posix::stat_type)
	(__gnu_posix::stat, __gnu_posix::lstat, __gnu_posix::mode_t)
	(__gnu_posix::chmod, __gnu_posix::mkdir, __gnu_posix::getcwd)
	(__gnu_posix::chdir, __gnu_posix::utimbuf, __gnu_posix::utime)
	(__gnu_posix::rename, __gnu_posix::truncate, __gnu_posix::char_type):
	Define as adaptors for Windows functions/types or as
	using-declarations for POSIX functions/types.
	(stat_type, do_copy_file): Qualify names to use declarations from
	__gnu_posix namespace.
	(do_space): Declare new function.
	(make_file_type): Only use S_ISLNK if defined.
	* src/filesystem/ops.cc (char_ptr, filesystem::canonical): Use
	path::value_type not char.
	(filesystem::copy, create_dir, filesystem::create_directory): Qualify
	names to use declarations from __gnu_posix namespace.
	(filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
	add implementation for Windows.
	(filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
	(filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
	[!_PC_PATH_MAX]: Don't use pathconf.
	[PATH_MAX]: Use if defined.
	(filesystem::current_path(const path&, error_code&))
	(filesystem::equivalent, do_stat, filesystem::hard_link_count)
	(filesystem::last_write_time, filesystem::permissions): Use names
	from __gnu_posix.
	(filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
	(filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
	implementation for Windows.
	(filesystem::rename, filesystem::resize_file): Use names from
	__gnu_posix.
	(filesystem::space): Use do_space.
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Get absolute path to directory.
	(filesystem::status, filesystem::symlink_status): Use names from
	__gnu_posix.
	(filesystem::temp_directory_path): Add implementation for Windows.
	* src/filesystem/path.cc (dot): Define constant.
	(path::replace_extension): Use dot.
	(path::_M_find_extension): Likewise. Use path::string_type not
	std::string.
	(path::_M_split_cmpts): Use dot.
	(filesystem_error::_M_get_what): Use u8string() not native().
	* src/filesystem/std-dir.cc (_Dir, recursive_directory_iterator):
	Qualify names to use declarations from __gnu_posix namespace.
	* src/filesystem/std-ops.cc (filesystem::absolute(const path&)): Use
	correct error_code.
	(filesystem::absolute(const path&, error_code&)): Add implementation
	for Windows.
	(char_ptr, filesystem::canonical): Use path::value_type not char.
	(do_copy_file): Use names from __gnu_posix.
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Do not use fchmod, fchmodat or
	sendfile.
	(filesystem::copy, create_dir, filesystem::create_directory): Qualify
	names to use declarations from __gnu_posix namespace.
	(filesystem::create_hard_link): Check HAVE_LINK autoconf macro and
	add implementation for Windows.
	(filesystem::create_symlink): Check HAVE_SYMLINK autoconf macro.
	(filesystem::current_path(error_code&)): Use __gnu_posix::getcwd.
	[!_PC_PATH_MAX]: Don't use pathconf.
	[PATH_MAX]: Use if defined.
	(filesystem::current_path(const path&, error_code&))
	(filesystem::equivalent, do_stat, filesystem::hard_link_count)
	(filesystem::last_write_time, filesystem::permissions): Use names
	from __gnu_posix.
	(filesystem::read_symlink): Check HAVE_READLINK autoconf macro.
	(filesystem::remove) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Add
	implementation for Windows.
	(filesystem::rename, filesystem::resize_file): Use names from
	__gnu_posix.
	(do_space): Define.
	(filesystem::space): Use do_space.
	(filesystem::status, filesystem::symlink_status): Use names from
	__gnu_posix.
	(filesystem::temp_directory_path): Add implementation for Windows.
	* src/filesystem/std-path.cc
	[_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::operator/=(const path&)):
	Define for Windows.
	(dot): Define constant.
	(path::replace_extension, is_dot): Use dot.
	(path::lexically_normal): Check _M_type instead of calling
	non-existent function.
	(path::_M_find_extension): Use dot. Use path::string_type not
	std::string.
	(path::_M_split_cmpts): Use dot.
	(filesystem_error::_M_get_what): Use u8string() not native().
	* testsuite/27_io/filesystem/iterators/directory_iterator.cc: Do not
	use symlinks.
	* testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
	Likewise.
	* testsuite/27_io/filesystem/operations/absolute.cc: Use
	__gnu_test::root_path() instead of "/" and add Windows-specific tests.
	* testsuite/27_io/filesystem/operations/canonical.cc: Use
	path::string() to get narrow string, not path::native().
	* testsuite/27_io/filesystem/operations/copy.cc: Construct fstreams
	with std::filesystem::path not std::basic_string.
	* testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
	* testsuite/27_io/filesystem/operations/exists.cc: Use
	__gnu_test::root_path() instead of "/".
	* testsuite/27_io/filesystem/operations/is_empty.cc: Construct
	fstreams with std::filesystem::path not std::basic_string.
	* testsuite/27_io/filesystem/operations/last_write_time.cc: Use
	path::string() to get narrow string.
	* testsuite/27_io/filesystem/operations/space.cc: Check results for
	errors, expect sensible values otherwise.
	* testsuite/27_io/filesystem/operations/temp_directory_path.cc: Add
	helpers for adjusting the environment on Windows.
	* testsuite/27_io/filesystem/path/append/path.cc: Test
	Windows-specific behaviour.
	* testsuite/27_io/filesystem/path/construct/format.cc: Fix creation
	of path::string_type objects.
	* testsuite/27_io/filesystem/path/construct/locale.cc: Compare native
	string to wide string on Windows.
	* testsuite/27_io/filesystem/path/decompose/root_directory.cc: Allow
	for backslash as root-directory.
	* testsuite/27_io/filesystem/path/decompose/stem.cc: Use
	path::string() to get narrow string.
	* testsuite/27_io/filesystem/path/itr/traversal.cc: Test Windows-style
	paths.
	* testsuite/27_io/filesystem/path/native/string.cc: Use string_type
	not std::string.
	* testsuite/27_io/filesystem/path/query/is_absolute.cc: Adjust for
	different definintion of absolute paths on Windows.
	* testsuite/experimental/filesystem/iterators/directory_iterator.cc:
	Do not use symlinks.
	* testsuite/experimental/filesystem/operations/absolute.cc: Test
	Windows behaviour.
	* testsuite/experimental/filesystem/operations/copy.cc: Construct
	fstreams with NTCTS not std::basic_string.
	* testsuite/experimental/filesystem/operations/copy_file.cc: Likewise.
	* testsuite/experimental/filesystem/operations/exists.cc: Use
	__gnu_test::root_path() instead of "/".
	* testsuite/experimental/filesystem/operations/is_empty.cc: Construct
	fstreams with NTCTS not std::basic_string.
	* testsuite/experimental/filesystem/operations/last_write_time.cc:
	Use path::string() to get narrow string.
	* testsuite/experimental/filesystem/operations/space.cc: Use
	__gnu_test::root_path() instead of "/".
	* testsuite/experimental/filesystem/operations/temp_directory_path.cc:
	Add helpers for adjusting the environment on Windows.
	* testsuite/experimental/filesystem/path/append/path.cc: Use
	path::string() to get narrow strings for comparisons.
	* testsuite/experimental/filesystem/path/concat/path.cc: Likewise.
	* testsuite/experimental/filesystem/path/decompose/root_directory.cc:
	Likewise.
	* testsuite/experimental/filesystem/path/decompose/stem.cc: Likewise.
	* testsuite/experimental/filesystem/path/native/string.cc: Use
	string_type not std::string.
	* testsuite/experimental/filesystem/path/query/is_absolute.cc:
	Adjust for different definintion of absolute paths on Windows.
	* testsuite/util/testsuite_fs.h (__gnu_test::root_path()): New
	function.
	(__gnu_test::scoped_file): Construct fstreams with NTCTS not
	std::basic_string.

From-SVN: r261034

	* config/i386/sse.md (avx_vec_concat<mode>):
	Substitute concat_tg_mode mode attribute with xtg_mode.
	(<mask_codefor>avx512dq_broadcast<mode><mask_name>_1): Ditto.
	(concat_tg_mode): Remove mode attribute.

From-SVN: r261031

gcc/c-family/ChangeLog:

	PR c/82063
	* c.opt (-Wno-alloc-size-larger-than): New option.
	* doc/invoke.texi (-Walloc-size-larger-than): Update.

gcc/ChangeLog:

	PR c/82063
	* calls.c (alloc_max_size): Correct a logic error/typo.
	Treat excessive arguments as infinite.  Warn for invalid arguments.

gcc/testsuite/ChangeLog:

	PR c/82063
	* gcc.dg/Walloc-size-larger-than-1.c: New test.
	* gcc.dg/Walloc-size-larger-than-10.c: New test.
	* gcc.dg/Walloc-size-larger-than-11.c: New test.
	* gcc.dg/Walloc-size-larger-than-12.c: New test.
	* gcc.dg/Walloc-size-larger-than-13.c: New test.
	* gcc.dg/Walloc-size-larger-than-14.c: New test.
	* gcc.dg/Walloc-size-larger-than-15.c: New test.
	* gcc.dg/Walloc-size-larger-than-16.c: New test.
	* gcc.dg/Walloc-size-larger-than-17.c: New test.
	* gcc.dg/Walloc-size-larger-than-2.c: New test.
	* gcc.dg/Walloc-size-larger-than-3.c: New test.
	* gcc.dg/Walloc-size-larger-than-4.c: New test.
	* gcc.dg/Walloc-size-larger-than-5.c: New test.
	* gcc.dg/Walloc-size-larger-than-6.c: New test.
	* gcc.dg/Walloc-size-larger-than-7.c: New test.
	* gcc.dg/Walloc-size-larger-than-8.c: New test.
	* gcc.dg/Walloc-size-larger-than-9.c: New test.
	* gcc.dg/Walloc-size-larger-than.c: New test.

From-SVN: r261030

r254152 disabled partial_reg_dependency and movx for Haswell and newer
Intel processors.  r258972 restored them for skylake-avx512.  For Haswell,
movx improves performance.  But partial_reg_stall may be better than
partial_reg_dependency in theory.  We will investigate performance impact
of partial_reg_stall vs partial_reg_dependency on Haswell for GCC 9.  In
the meantime, this patch restores both partial_reg_dependency and mox for
Haswell in GCC 8.

On Haswell, improvements for EEMBC benchmarks with

-mtune-ctrl=movx,partial_reg_dependency -Ofast -march=haswell

vs

-Ofast -mtune=haswell

are

automotive
=========
  aifftr01 (default) - goodperf: Runtime improvement of   2.6% (time).
  aiifft01 (default) - goodperf: Runtime improvement of   2.2% (time).

networking
=========
  ip_pktcheckb1m (default) - goodperf: Runtime improvement of   3.8% (time).
  ip_pktcheckb2m (default) - goodperf: Runtime improvement of   5.2% (time).
  ip_pktcheckb4m (default) - goodperf: Runtime improvement of   4.4% (time).
  ip_pktcheckb512k (default) - goodperf: Runtime improvement of   4.2% (time).

telecom
=========
  fft00data_1 (default) - goodperf: Runtime improvement of   8.4% (time).
  fft00data_2 (default) - goodperf: Runtime improvement of   8.6% (time).
  fft00data_3 (default) - goodperf: Runtime improvement of   9.0% (time).

	PR target/85829
	* config/i386/x86-tune.def: Re-enable partial_reg_dependency
	and movx for Haswell.

From-SVN: r261028

Fix PR middle-end/85879

	gcc/
	* gimplify.c (gimplify_adjust_omp_clauses): Add 'remove = true'
	when emitting error on private/firstprivate reductions.
	* omp-low.c (lower_omp_target): Avoid reference-type processing
	on pointers for firstprivate clause.

	gcc/testsuite/
	* gfortran.dg/goacc/pr77371-1.f90: New test.
	* gfortran.dg/goacc/pr77371-2.f90: New test.
	* gfortran.dg/goacc/pr85879.f90: New test.

Co-Authored-By: Cesar Philippidis <cesar@codesourcery.com>

From-SVN: r261025

Because the wide character types are neither signed integer types nor
unsigned integer types they need to be transformed to an integral type
of the correct size and the lowest rank (which is not necessarily the
underlying type). Reuse the helpers for enumeration types to select the
correct integer.

The refactoring of __make_unsigned_selector and __make_signed_selector
slightly reduces the number of template instantiations and so reduces
memory usage.

	PR libstdc++/85951
	* include/std/type_traits [_GLIBCXX_USE_C99_STDINT_TR1]: Do not define
	uint_least16_t and uint_least32_t.
	(__make_unsigned<wchar_t>): Define unconditionally.
	(__make_unsigned_selector<_Tp, true, false>): Remove intermediate
	typedefs.
	(__make_unsigned_selector_base): New type to provide helper templates.
	(__make_unsigned_selector<_Tp, false, true>): Reimplement using
	__make_unsigned_selector_base helpers.
	(__make_unsigned<char16_t>, __make_unsigned<char32_t>): Define.
	(__make_signed_selector<_Tp, true, false>): Remove intermediate
	typedefs.
	(__make_signed<wchar_t>, __make_signed<char16_t>)
	(__make_signed<char32_t>)): Define unconditionally.
	* testsuite/20_util/make_signed/requirements/typedefs-3.cc: Check
	wchar_t, char16_t and char32_t are transformed correctly.
	* testsuite/20_util/make_signed/requirements/typedefs_neg.cc: Adjust
	dg-error lineno.
	* testsuite/20_util/make_unsigned/requirements/typedefs-3.cc: Check
	wchar_t, char16_t and char32_t are transformed correctly.
	* testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc: Adjust
	dg-error lineno.

From-SVN: r261023

	* gnat.dg/stack_usage1.adb: Replace -fstack-usage with -Wstack-usage.
	* gnat.dg/stack_usage1b.adb: Likewise.
	* gnat.dg/stack_usage1c.adb: Likewise.
	* gnat.dg/stack_usage3.adb: Likewise.
	* gnat.dg/stack_usage1_pkg.adb: Delete.

From-SVN: r261021

	* gcc.dg/store_merging_10.c: Turn dg-do compile into dg-do run.
	* gcc.dg/store_merging_11.c: Likewise.
	* gcc.dg/store_merging_13.c: Likewise.
	* gcc.dg/store_merging_14.c: Likewise.
	* gcc.dg/store_merging_15.c: Likewise.
	* gcc.dg/store_merging_16.c: Likewise.  Remove local variable.

From-SVN: r261019

2018-05-31  Pierre-Marie de Rodat  <derodat@adacore.com>

gcc/ada/

	* doc/gnat_ugn/project-manager-figure.png: Delete.

From-SVN: r261018

2018-05-31  Pierre-Marie de Rodat  <derodat@adacore.com>

gcc/ada/

	* vxworks-arm-link.spec, vxworks-e500-link.spec,
	vxworks-gnat-crtbe-link.spec, vxworks-smp-arm-link.spec,
	vxworks-smp-e500-link.spec, vxworks-smp-ppc-link.spec,
	vxworks-smp-x86-link.spec: New files.

From-SVN: r261017

2018-05-31  Pierre-Marie de Rodat  <derodat@adacore.com>

gcc/ada/

	* gnatvsn.adb: Re-center the copyright header.
	* indepsw-darwin.adb: Adjust the starting copyright year to 2011.

From-SVN: r261016

2018-05-31  Fedor Rybin  <frybin@adacore.com>

gcc/ada/

	* doc/gnat_ugn/gnat_utility_programs.rst: Document Stubs_Subdir in
	gnattest section on user guide.

From-SVN: r261015

This patch implements the rule given in R< 4.2 (11): if the component type of
a string literal is a character type with a static predicate, that predicate
must be applied to each character in the string.

Compiling the example below must yield:

   gcc -c -gnata main.adb

  main.adb:4:23: warning: static expression fails static predicate check on "C"
  main.adb:4:23: warning: expression is no longer considered static
  main.adb:4:24: warning: static expression fails static predicate check on "C"
  main.adb:4:24: warning: expression is no longer considered static
  main.adb:4:25: warning: static expression fails static predicate check on "C"
  main.adb:4:25: warning: expression is no longer considered static

Execution must yield:

  raised SYSTEM.ASSERTIONS.ASSERT_FAILURE :
                                        Static_Predicate failed at main.adb:4
----

procedure Main is
   subtype C is Character with Static_Predicate => C in 'A' | 'B' | 'C';
   type S is array (Positive range <>) of C;
   X : constant S := "abc";
begin
   null;
end;

2018-05-31  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* sem_res.adb (Resolve_String_Literal): If the type is a string type
	whose component subtype has a static predicate, ensure that the
	predicate is applied to each character by expanding the string into the
	equivalent aggregate. This is also done if the component subtype is
	constrained.

From-SVN: r261014

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/trans.c (Call_to_gnu): Remove obsolete code.

From-SVN: r261013

GNAT was emitting a warning about procedures with No_Return aspect on the
spec and a returning body, but failed to handle similar procedures with
no explicit spec. Now fixed.

This was also affecting GNATprove, where an undetected mismatch between
No_Return aspect and the body was a soundness bug, i.e. GNATprove was
silently accept code that raise a runtime exception.

------------
-- Source --
------------

procedure P (X : Boolean) with No_Return is
begin
   if X then
      raise Program_Error;
   end if;
end;

-----------------
-- Compilation --
-----------------

$ gcc -c p.adb
p.adb:3:04: warning: implied return after this statement will raise
                     Program_Error
p.adb:3:04: warning: procedure "P" is marked as No_Return

2018-05-31  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* sem_ch6.adb (Check_Missing_Return): Handle procedures with no
	explicit spec.

From-SVN: r261012

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/trans.c (Call_to_gnu): In the by-reference case, if
	the type of the parameter is an unconstrained array type, convert
	to the type of the actual before the type of the formal only if the
	conversion was suppressed earlier.  Use in_param and gnu_actual_type
	local variables throughout, and uniform spelling for In Out or Out.
	Also remove dead code in the component-by-reference case.

From-SVN: r261011

A STORAGE ERROR is raised in __gnat_backtrace:

adainit: 0x00400DBC

Execution of ce.vxe terminated by unhandled exception
raised STORAGE_ERROR : SIGSEGV: possible stack overflow
Call stack traceback locations:
0x4082f1 0x408323 0x4080c9

It was passing with vxsim because the WRS_RTP_BASE is set to a different
place hence the (CURRENT) < (TOP_STACK) was stopping the backtrace at the
right time. So let's stop at the main symbol when RTS=rtp.

2018-05-31  Frederic Konrad  <konrad@adacore.com>

gcc/ada/

	* tracebak.c (STOP_FRAME): Harden condition.
	(is_return_from, EXTRA_STOP_CONDITION): New helpers for VxWorks in RTP
	mode.

From-SVN: r261010

This patch fixes a spurious copy of a limited object, when that object
is a discriminated record component of a limited type LT, and the enclosing
record is initialized by means of an aggregate, one of whose components is a
call to a build-in-place function that returns an unconstrained object of
type T.

2018-05-31  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* checks.adb (Apply_Discriminant_Check): Do not apply discriminant
	check to a call to a build-in-place function, given that the return
	object is limited and cannot be copied.

gcc/testsuite/

	* gnat.dg/limited1.adb, gnat.dg/limited1_inner.adb,
	gnat.dg/limited1_inner.ads, gnat.dg/limited1_outer.adb,
	gnat.dg/limited1_outer.ads: New testcase.

From-SVN: r261009

Remove mention of unavailability, long obsolete, and reword suggestion of use
to indicate that we might want to switch to an internal interface using them.
The current wording suggests just that we should bind the current
Sync_Compare_And_Swap Ada subprograms to __atomic_compare builtins instead of
__sync_compare, which would be highly confusing.

2018-05-31  Olivier Hainque  <hainque@adacore.com>

gcc/ada/

	* libgnat/s-atopri.ads: Update comment on __atomic_compare_exchange
	builtins.

From-SVN: r261008

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/trans.c (Call_to_gnu): If this is a function call and
	there is no target, also create a temporary for the return value for
	an allocator if the type is an unconstrained record type with default
	discriminant.

From-SVN: r261007

This patch modifies the transient scope mechanism to create a scope when the
condition of an iteration scheme returns a controlled result or involves the
secondary stack. As a result, a while loop which iterates over a container
properly manages the tampering bit at each iteration of the loop.

2018-05-31  Hristian Kirtchev  <kirtchev@adacore.com>

gcc/ada/

	* exp_ch7.adb (Find_Transient_Context): An iteration scheme is a valid
	boudary for a transient scope.

gcc/testsuite/

	* gnat.dg/tampering_check1.adb, gnat.dg/tampering_check1_ivectors.ads,
	gnat.dg/tampering_check1_trim.adb, gnat.dg/tampering_check1_trim.ads:
	New testcase.

From-SVN: r261006

2018-05-31  Valentine Reboul  <reboul@adacore.com>

gcc/ada/

	* gnatvsn.ads: Rename "GPL" version to "Community".

From-SVN: r261005

2018-05-31  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* einfo.ads: Improve documentation for the Is_Unsigned_Type entity
	flag.

From-SVN: r261004

Calling Unique_Defining_Entity on protectected entry declarations is
equivalent to calling a simpler Defining_Entity; use the simpler routine.

Simplification only; semantics unaffected, so no test provided.

2018-05-31  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* sem_prag.adb (Analyze_Pragma): Replace call to Unique_Defining_Entity
	with a semantically equivalent call to Defining_Entity.

From-SVN: r261003

Rewriting of Max_Queue_Length expression into N_Integer_Literal should probably
be done in expansion and not in analysis, but anyway it should not strip the
expression from its Etype because backends (e.g. GNATprove) expect that Etype
to be present.

No frontend test is provided, because GNAT doesn't care about the missing
Etype decoration. This patch allows to simplify AST processing in GNATprove.

2018-05-31  Piotr Trojanek  <trojanek@adacore.com>

gcc/ada/

	* sem_prag.adb (Analyze_Pragma): Set Etype on the rewritten
	Max_Queue_Length expression.

From-SVN: r261002

2018-05-31  Sergey Rybin  <rybin@adacore.com>

gcc/ada/

	* doc/gnat_ugn/gnat_and_program_execution.rst: gnatelim does not need
	that the main unit to be built before the call, now it computes the
	closure of the main unit itself.
	* gnat_ugn.texi: Regenerate.

From-SVN: r261001

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* repinfo.adb (List_Structural_Record_Layout): Set First to false
	after having listed the fields of the parent type, if any.

From-SVN: r261000

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* gcc-interface/decl.c (gnat_to_gnu_entity) <discrete_type>: Do not
	deal with the ___XP suffix for packed array types here...
	<E_Array_Subtype>: ...or here when processing the implementation type
	but when processing the original type instead.  Do not reuse the DECL
	of the implementation type for the original type.  Tidy up.

From-SVN: r260999

This ensures that a warning for an object size clause present on a subtype
is posted on the clause and not on a size clause present on the type.

2018-05-31  Eric Botcazou  <ebotcazou@adacore.com>

gcc/ada/

	* einfo.ads (Object_Size_Clause): Declare.
	* einfo.adb (Object_Size_Clause): New function.
	* gcc-interface/utils.c (maybe_pad_type): Test Has_Size_Clause before
	retrieving Size_Clause and post the warning on the object size clause
	if Has_Object_Size_Clause is true.

gcc/testsuite/

	* gnat.dg/size_clause1.adb: New testcase.

From-SVN: r260998

2018-05-31  Javier Miranda  <miranda@adacore.com>

gcc/ada/

	* sem_util.ads, sem_util.adb (Find_Primitive_Eq): New subprogram.
	* exp_ch4.adb (Expand_Composite_Equality): Use the new subprogram
	Find_Primitive_Eq to search for the primitive of types whose underlying
	type is a tagged type.

gcc/testsuite/

	* gnat.dg/tagged1.adb, gnat.dg/tagged1.ads: New testcase.

From-SVN: r260997

Loop (in)variants should appear next to each other, which is checked by GNAT
frontend. As statements inserted during expansion may break this contiguity,
GNAT recognizes specially such statements which originate in loop pragmas. In
some cases, this special treatment was not properly put in place, which lead to
spurious errors being issued.

2018-05-31  Yannick Moy  <moy@adacore.com>

gcc/ada/

	* sem_prag.adb (Analyze_Pragma.Check_Loop_Pragma_Placement): Inverse
	order of treatment between nodes recognized as loop pragmas (or
	generated from one) and block statements.

From-SVN: r260996

gettimeofday is deprecated in Posix 2008, clock_gettime is the recommended
replacement.

2018-05-31  Doug Rupp  <rupp@adacore.com>

gcc/ada/

	* libgnat/s-osprim__posix2008.adb (Clock): Implement using
	clock_gettime.

From-SVN: r260995

2018-05-31  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_unst.ads, exp_unst.adb (In_Synchronized_Unit): New predicate to
	mark subprograms that cannot be eliminated because they must be treated
	as reachable from outside the current unit. This includes entry bodies
	and protected operations.

From-SVN: r260994

2018-05-31  Ed Schonberg  <schonberg@adacore.com>

gcc/ada/

	* exp_ch4.adb (Expand_Modular_Addition, Expand_Modular_Subtraction):
	Convert all operands of the generated code to Standard.Unsigned, to
	prevent spurious visibility errors. This is needed when the generated
	expansion involves a modular index type of an array type, and the index
	type is not immediately visible.

From-SVN: r260993

2018-05-31  Matthias Klose  <doko@ubuntu.com>

        PR sanitizer/86012
        * sanitizer_common/sanitizer_platform_limits_posix.cc: Define
        SIZEOF_STRUCT_USTAT for 32bit sparc.

From-SVN: r260990