When two arrays of scalars have a different storage order in Ada, the
front-end makes sure that the conversion is performed component-wise
so that each component can be reversed.  So it's a little bit counter
productive that the ldist pass performs the opposite transformation
and synthesizes a memcpy/memmove in this case.

gcc/
	* tree-loop-distribution.cc (loop_distribution::classify_builtin_ldst):
	Bail out if source and destination do not have the same storage order.

gcc/testsuite/
	* gnat.dg/sso18.adb: New test.

These functions aren't usable in constant expressions. Provide our own
implementations, based on __from_chars_alnum_to_val from <charconv>.

libstdc++-v3/ChangeLog:

	PR libstdc++/107817
	* include/std/charconv (__from_chars_alnum_to_val): Add
	constexpr for C++20.
	* include/std/format (__is_digit, __is_xdigit): New functions.
	(_Spec::_S_parse_width_or_precision): Use __is_digit.
	(__formatter_fp::parse): Use __is_xdigit.

libstdc++-v3/ChangeLog:

	PR libstdc++/106201
	* testsuite/27_io/filesystem/iterators/106201.cc: New test.

This should have been part of r12-578-g717d278af93a4a.  Call edge
summaries provide information required for IPA-SRA transformations in
the callees but are generated when analyzing callers and thus also
callers which are not IPA-SRA candidates themselves.  Therefore we
analyze them but don't dump them, which makes the dumops quite
incomplete. This patch fixes that.

gcc/ChangeLog:

2021-12-14  Martin Jambor  <mjambor@suse.cz>

	* ipa-sra.cc (ipa_sra_dump_all_summaries): Dump edge summaries even
	for non-candidates.

When building vectors of known aggregate values, there is no point in
including those for parameters which are not used in any way
whatsoever.  This patch avoids that together with also other kinds of
constants.

gcc/ChangeLog:

2022-11-13  Martin Jambor  <mjambor@suse.cz>

	* ipa-cp.cc (push_agg_values_from_edge): Do not consider constants
	in unused aggregate parameters.

I have noticed that the flag m_split_modifications_p of
ipa_param_body_adjustments is not really necessary as it has to
correspond to whether m_replacements is non-empty so this patches
removes it.  This also simplifies a bit some patches I work on.

gcc/ChangeLog:

2022-11-10  Martin Jambor  <mjambor@suse.cz>

	* ipa-param-manipulation.h (ipa_param_body_adjustments): Removed
	member m_split_modifications_p.
	* ipa-param-manipulation.cc
	(ipa_param_body_adjustments::common_initialization): Do not set
	m_split_modifications_p.
	(ipa_param_body_adjustments::ipa_param_body_adjustments): Remove
	initializations of m_split_modifications_p.
	(ipa_param_body_adjustments::modify_call_stmt): Check that
	m_replacements is empty instead of m_split_modifications_p.

PR 107661 shows that function push_agg_values_for_index_from_edge
should not attempt to optimize self-recursive call graph edges when
called from cgraph_edge_brings_all_agg_vals_for_node.  Unlike when
being called from find_aggregate_values_for_callers_subset, we cannot
expect that any cloning for constants would lead to the edge leading
from a new clone to the same new clone, in this case it would only be
redirected to a new callee.

Fixed by adding a parameter to push_agg_values_from_edge whether being
optimistic about self-recursive edges is possible.

gcc/ChangeLog:

2022-11-22  Martin Jambor  <mjambor@suse.cz>

	PR ipa/107661
	* ipa-cp.cc (push_agg_values_from_edge): New parameter
	optimize_self_recursion, use it to decide whether to pass interim to
	the helper function.
	(find_aggregate_values_for_callers_subset): Pass true in the new
	parameter of push_agg_values_from_edge.
	(cgraph_edge_brings_all_agg_vals_for_node): Pass false in the new
	parameter of push_agg_values_from_edge.

gcc/testsuite/ChangeLog:

2022-11-22  Martin Jambor  <mjambor@suse.cz>

	PR ipa/107661
	* g++.dg/ipa/pr107661.C: New test.

The new builtins have been added for newlib to reduce dependency on
compiler-internal implementation choices of GCC in newlibs' getreent.c.

gcc/ChangeLog:

	* config/gcn/gcn-builtins.def (FIRST_CALL_THIS_THREAD_P,
	GET_STACK_LIMIT): Add new builtins.
	* config/gcn/gcn.cc (gcn_expand_builtin_1): Expand them.
	* config/gcn/gcn.md (prologue_use): Add "register_operand" as
	arg to match_operand.
	(prologue_use_di): New; DI insn_and_split variant of the former.

Co-Authored-By: Andrew Stubbs <ams@codesourcery.com>

The contracts implementation was using strchrnul, which is a glibc
extension, so bootstrap broke on non-glibc targets.  Use C89 strcspn
instead.

	PR c++/107781

gcc/cp/ChangeLog:

	* contracts.cc (role_name_equal): Use strcspn instead
	of strchrnul.

gcc.target/aarch64/aapcs64/test_dfp_17.c has been failing on
big-endian, because the _Decimal32 on-stack argument is not padded in
the same direction depending on endianness.

This patch fixes the testcase so that it expects the argument in the
right stack location, similarly to what other tests do in the same
directory.

gcc/testsuite/ChangeLog:

	PR target/107604
	* gcc.target/aarch64/aapcs64/test_dfp_17.c: Fix for big-endian.

Aspects Global and Depends are now allowed on abstract subprograms
(as substitutes for Global'Class and Depends'Class).

This patch implements the recently modified rules SPARK RM 6.1.2(2-3).
The behavior for Contract_Cases and aspects on null subprograms stays
as it was.

gcc/ada/

	* sem_prag.adb (Analyze_Depends_Global): Accept aspects on
	abstract subprograms.

This commit re-enables the Validate_Subprogram_Calls check that had been
disabled in a previous commit and has said check skip over Elab_Spec
procedures in CodePeer_Mode.

gcc/ada/

	* frontend.adb (Frontend): Re-enable Validate_Subprogram_Calls.
	* exp_ch6.adb (Check_BIP_Actuals): When in CodePeer mode, do not
	attempt to validate procedures coming from an
	Elab_Spec/Elab_Body/Elab_Subp_Body procedure.

When a warning about a runtime exception is emitted for a code in
generic instance, we add continuation warnings "in instantiation ..."
and only the original message increase the total number of errors.

When removing these messages, e.g. after detecting that the code inside
generic instance is dead, we must decrease the total number of errors,
as otherwise the compiler exit status might stop gnatmake or gprbuild.

gcc/ada/

	* errout.adb (To_Be_Removed): Decrease total number of errors when
	removing a warning that has been escalated into error.
	* erroutc.adb (dmsg): Print Warn_Runtime_Raise flag.

gcc/ada/

	* exp_ch3.adb (Make_Tag_Assignment): Fix formatting glitches.

It's the compiler trying to load the nonexistent body of a generic package
when trying to inline a call to an expression function of this package that
has a pre or post-condition (hence the need for -gnata to trigger the ICE).

gcc/ada/

	* contracts.adb (Build_Subprogram_Contract_Wrapper): Do not fiddle
	with the Was_Expression_Function flag. Move a few lines around.

The SSA propagator is missing abnormal cleanup which shows in a
sanity check in the uninit engine (and missed CFG verification).
The following adds that.

	PR tree-optimization/107803
	* tree-ssa-propagate.cc (substitute_and_fold_dom_walker): Add
	need_ab_cleanup member.
	(substitute_and_fold_dom_walker::before_dom_children): When
	a stmt can no longer transfer control flow abnormally set
	need_ab_cleanup.
	(substitute_and_fold_engine::substitute_and_fold): Cleanup
	abnormal control flow.

	* g++.dg/pr107803.C: New testcase.

The array of pool sizes was previously adjusted to work for msp430-elf
which has 16-bit int and either 16-bit size_t or 20-bit size_t. The
largest pool sizes were disabled unless size_t has more than 20 bits.

The H8 family has 16-bit int but 32-bit size_t, which means that the
largest sizes are enabled, but 1<<15 produces a negative number that
then cannot be narrowed to size_t.

Replace the test for 32-bit size_t with a test for 32-bit int, which
means we won't use the 4kiB to 4MiB pools for targets with 16-bit int
even if they have a wider size_t.

libstdc++-v3/ChangeLog:

	PR libstdc++/107801
	* src/c++17/memory_resource.cc (pool_sizes): Disable large pools
	for targets with 16-bit int.

The following avoids using type_for_mode on vector modes which might
not work for all frontends.  Instead we look for the inner mode
type and use build_vector_type_for_mode instead.

	PR tree-optimization/107672
	* tree-vect-stmts.cc (supportable_widening_operation): Avoid
	type_for_mode on vector modes.

The following uses *node to check for FP types rather than the
child nodes which could be constant leafs and thus without a
vector type.

	PR tree-optimization/107766
	* tree-vect-slp-patterns.cc (complex_mul_pattern::matches):
	Use *node to check for FP vector types.

	* g++.dg/vect/pr107766.cc: New testcase.

gcc/ChangeLog:

	* config/i386/mmx.md (*mov<mode>_internal): Add
	ix86_hard_reg_move_ok to condition.

1. We also need to guard size of TO to be
less than TARGET_SSE2 ? 2 : 4 in ix86_can_change_mode_class.
2. Merge VALID_AVX512FP16_SCALAR_MODE plus BFmode
into VALID_AVX512F_SCALAR_MODE since we've support 16-bit data move
above SSE2, so no need for the condition of AVX512FP16 for those evex
sse registers.
3. Allocate DI/HImode to sse register for SSE2 above just like
SImode since we've supported 16-bit data move between sse and gpr
above SSE2, this will help RA to handle cases like (subreg:HI (reg:V8HI)
0) or else RA will spill it. This enable optimization for
pices-memset-{3,37,39}.c

gcc/ChangeLog:

	* config/i386/i386.cc (ix86_can_change_mode_class): Also guard
	size of TO.
	(ix86_hard_regno_mode_ok): Remove VALID_AVX512FP16_SCALAR_MODE
	* config/i386/i386.h (VALID_AVX512FP16_SCALAR_MODE): Merged to
	..
	(VALID_AVX512F_SCALAR_MODE): .. this, also add HImode.
	(VALID_SSE_REG_MODE): Add DI/HImode.

gcc/testsuite/ChangeLog:

	* gcc.target/i386/pieces-memset-3.c: Remove xfail.
	* gcc.target/i386/pieces-memset-37.c: Remove xfail.
	* gcc.target/i386/pieces-memset-39.c: Remove xfail.

Fixing -Wunused-parm warnings and link errors depending on where -fcontracts
appears on the command line.

gcc/cp/ChangeLog:

	* contracts.cc (build_contract_condition_function):
	Set DECL_ARTIFICIAL on return value parm.
	* g++spec.cc (lang_specific_driver): Add -lstdc++exp
	just before -lstdc++.

gcc/analyzer/ChangeLog:
	PR analyzer/107788
	* region-model.cc (region_model::update_for_int_cst_return):
	Require that the return type be an integer type.
	(region_model::update_for_nonzero_return): Likewise.

gcc/testsuite/ChangeLog:
	PR analyzer/107788
	* g++.dg/analyzer/fd-bind-pr107783.C: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

gcc/analyzer/ChangeLog:
	PR analyzer/107783
	* region-model-impl-calls.cc (kf_accept::matches_call_types_p):
	Require that args 1 and 2 be pointers.
	(kf_bind::matches_call_types_p): Require that arg 1 be a pointer.
	* region-model.h (call_details::arg_is_pointer_p): New

gcc/testsuite/ChangeLog:
	PR analyzer/107783
	* gcc.dg/analyzer/fd-bind-pr107783.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

gcc/analyzer/ChangeLog:
	PR analyzer/107777
	* call-summary.cc
	(call_summary_replay::convert_region_from_summary_1): Handle
	RK_THREAD_LOCAL and RK_ERRNO in switch.
	* region-model.cc (region_model::get_representative_path_var_1):
	Likewise.

gcc/testsuite/ChangeLog:
	PR analyzer/107777
	* gcc.dg/analyzer/call-summaries-errno.c: New test.
	* gcc.dg/analyzer/errno-pr107777.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

gcc/testsuite/ChangeLog:
	* gcc.dg/analyzer/CWE-131-examples.c: New test.
	* gcc.dg/analyzer/file-CWE-1341-example.c: New test.
	* gcc.dg/analyzer/malloc-CWE-401-example.c: New test.
	* gcc.dg/analyzer/malloc-CWE-415-examples.c: New test.
	* gcc.dg/analyzer/malloc-CWE-416-examples.c: New test.
	* gcc.dg/analyzer/malloc-CWE-590-examples.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

In directives.cc, do_pragma() contains logic to handle a case such as the new
testcase pragma-omp-unknown.c, where an unknown pragma was the result of macro
expansion (for pragma namespaces that permit expansion). This no longer works
correctly as shown by the testcase, fixed by adding PREV_WHITE to the flags on
the second token to prevent an unwanted paste.  Also fixed the memory leak,
since the temporary tokens are pushed on their own context, nothing prevents
freeing of the buffer that holds them when the context is eventually popped.

libcpp/ChangeLog:

	* directives.cc (do_pragma): Fix memory leak in token buffer.  Fix
	unwanted paste between two tokens.

gcc/testsuite/ChangeLog:

	* c-c++-common/gomp/pragma-omp-unknown.c: New test.

gcc/ChangeLog:

	* config/rtems.h (SUBTARGET_CC1_SPEC): Undef and define.

gcc/ChangeLog:

	* gcc.cc (SUBTARGET_CC1_SPEC): Define if not defined.
	(cc1_spec): Append SUBTARGET_CC1_SPEC.

When there are no bound arguments to a std::bind_front call we don't
need the overhead of compiling, initializing, and accessing an empty
tuple.

libstdc++-v3/ChangeLog:

	* include/std/functional (_Bind_front0): New class template.
	(_Bind_front_t): Use _Bind_front0 when there are no bound
	arguments.
	* testsuite/20_util/function_objects/bind_front/107784.cc:
	New test.

This ensures that we fail a static assertion before giving any other
errors. Instantiating chrono::duration<int, chrono::seconds> will now
print this before the other errors caused by it:

error: static assertion failed: period must be a specialization of ratio

libstdc++-v3/ChangeLog:

	* include/bits/chrono.h (duration): Check preconditions on
	template arguments before using them.

libstdc++-v3/ChangeLog:

	* include/std/tuple: Add better Doxygen comments.

The new analyzer tests for sockets are failing on embedded targets.
The newlib and avr-libc C libraries do not support sockets.

Testing done:
  - No changes in gcc.sum for x86_64-pc-linux-gnu, with or without this
    patch.
  - Filtered cases are now UNSUPPORTED instead of failing on AVR and PRU
    backends.

gcc/ChangeLog:

	* doc/sourcebuild.texi (sockets): Document new check.

gcc/testsuite/ChangeLog:

	* gcc.dg/analyzer/fd-accept.c: Require sockets.
	* gcc.dg/analyzer/fd-bind.c: Ditto.
	* gcc.dg/analyzer/fd-connect.c: Ditto.
	* gcc.dg/analyzer/fd-datagram-socket.c: Ditto.
	* gcc.dg/analyzer/fd-glibc-byte-stream-connection-server.c:
	Ditto.
	* gcc.dg/analyzer/fd-glibc-byte-stream-socket.c: Ditto.
	* gcc.dg/analyzer/fd-glibc-datagram-client.c: Ditto.
	* gcc.dg/analyzer/fd-glibc-datagram-socket.c: Ditto.
	* gcc.dg/analyzer/fd-listen.c: Ditto.
	* gcc.dg/analyzer/fd-manpage-getaddrinfo-client.c: Ditto.
	* gcc.dg/analyzer/fd-mappage-getaddrinfo-server.c: Ditto.
	* gcc.dg/analyzer/fd-socket-meaning.c: Ditto.
	* gcc.dg/analyzer/fd-socket-misuse.c: Ditto.
	* gcc.dg/analyzer/fd-stream-socket-active-open.c: Ditto.
	* gcc.dg/analyzer/fd-stream-socket-passive-open.c: Ditto.
	* gcc.dg/analyzer/fd-stream-socket.c: Ditto.
	* gcc.dg/analyzer/fd-symbolic-socket.c: Ditto.
	* lib/target-supports.exp (check_effective_target_sockets): New
	check.

Signed-off-by: Dimitar Dimitrov <dimitar@dinux.eu>

This requirement is enforced by a gcc_checking_assert in
record_estimate.

gcc/ChangeLog:

	* tree-ssa-loop.h (tree_niter_desc): Update comment.

The upcoming c[lt]z idiom recognition patch eliminates the need for a
brute force computation of the iteration count of these loops. The test
is intended to verify that ivcanon can determine the loop count when the
condition is given by a chain of constant computations.

We replace the constant operations with a more complicated chain that should
resist future idiom recognition.

gcc/testsuite/ChangeLog:

	* gcc.dg/pr77975.c: Make tests more robust.

This includes various changes to improve clarity, and to enable the code
to be more similar to the clz and ctz idiom recognition added in
subsequent patches.

We create new number_of_iterations_bitcount function, which will be used
to call the other bit-counting recognition functions added in subsequent
patches, as well as a generic comment describing the loop structures
that are common to each idiom. Some of the variables in
number_of_iterations_popcount are given more descriptive names, and the
popcount expression builder is extracted into a separate function.

As part of the refactoring, we also fix a bug where the max loop count
for modes shorter than an integer would be incorrectly computed as if
the input mode were actually an integer.

We also ensure that niter->max takes into account the final value for
niter->niter (after any folding and simplifying), since if the latter is a
constant, then record_estimate mandates that the two values are equivalent.

gcc/ChangeLog:

	* tree-ssa-loop-niter.cc
	(number_of_iterations_exit_assumptions): Modify to call...
	(number_of_iterations_bitcount): ...this new function.
	(number_of_iterations_popcount): Now called by the above.
	Refactor, and extract popcount expression builder to...
	(build_popcount_expr): this new function.

gcc/testsuite/ChangeLog:

	* gcc.dg/tree-ssa/popcount-max.c: New test.

gcc/ChangeLog:

	* tree-ssa-loop-niter.cc (ssa_defined_by_minus_one_stmt_p): Move
	(number_of_iterations_popcount): Move, and remove separate prototype.

This prevents a null dereference error when outputing debug information
following an early exit from number_of_iterations_exit_assumptions.

gcc/ChangeLog:

	* tree-ssa-loop-niter.cc (number_of_iterations_exit_assumptions):
	Move at_stmt assignment.

Without this patch, the following error is reported on Windows:

In file included from t:\build\arm-none-eabi\include\c++\11.3.1\string:54,
                  from t:\build\arm-none-eabi\include\c++\11.3.1\bits\locale_classes.h:40,
                  from t:\build\arm-none-eabi\include\c++\11.3.1\bits\ios_base.h:41,
                  from t:\build\arm-none-eabi\include\c++\11.3.1\ios:42,
                  from t:\build\arm-none-eabi\include\c++\11.3.1\ostream:38,
                  from t:\build\arm-none-eabi\include\c++\11.3.1\iostream:39:
t:\build\arm-none-eabi\include\c++\11.3.1\bits\range_access.h:36:10: note: include 't:\build\arm-none-eabi\include\c++\11.3.1\initializer_list' translated to import
arm-none-eabi-g++.exe: warning: .../gcc/testsuite/g++.dg/modules/pr99023_b.X: linker input file unused because linking not done
FAIL: g++.dg/modules/pr99023_b.X -std=c++2a  dg-regexp 6 not found: "[^\n]*: note: include '[^\n]*/initializer_list' translated to import\n"

gcc/testsuite/ChangeLog:

	* g++.dg/modules/pr99023_b.X: Match Windows paths too.

Co-Authored-By: Yvan ROUX <yvan.roux@foss.st.com>
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>