Avoid nested save_CFLAGS and save_LDFLAGS by replacing save_CFLAGS and
save_LDFLAGS with cet_save_CFLAGS and cet_save_LDFLAGS in cet.m4.

config/

	PR bootstrap/95413
	* cet.m4: Replace save_CFLAGS and save_LDFLAGS with
	cet_save_CFLAGS and cet_save_LDFLAGS.

gcc/

	PR bootstrap/95413
	* configure: Regenerated.

libatomic/

	PR bootstrap/95413
	* configure: Regenerated.

libbacktrace/

	PR bootstrap/95413
	* configure: Regenerated.

libcc1/

	PR bootstrap/95413
	* configure: Regenerated.

libcpp/

	PR bootstrap/95413
	* configure: Regenerated.

libdecnumber/

	PR bootstrap/95413
	* configure: Regenerated.

libgcc/

	PR bootstrap/95413
	* configure: Regenerated.

libgfortran/

	PR bootstrap/95413
	* configure: Regenerated.

libgomp/

	PR bootstrap/95413
	* configure: Regenerated.

libiberty/

	PR bootstrap/95413
	* configure: Regenerated.

libitm/

	PR bootstrap/95413
	* configure: Regenerated.

libobjc/

	PR bootstrap/95413
	* configure: Regenerated.

libphobos/

	PR bootstrap/95413
	* configure: Regenerated.

libquadmath/

	PR bootstrap/95413
	* configure: Regenerated.

libsanitizer/

	PR bootstrap/95413
	* configure: Regenerated.

libssp/

	PR bootstrap/95413
	* configure: Regenerated.

libstdc++-v3/

	PR bootstrap/95413
	* configure: Regenerated.

libvtv/

	PR bootstrap/95413
	* configure: Regenerated.

lto-plugin/

	PR bootstrap/95413
	* configure: Regenerated.

zlib/

	PR bootstrap/95413
	* configure: Regenerated.

The initial fix for this PR uncovered several latent issues with further
too small string buffers which showed up only when testing on i686.
Provide sufficiently large temporaries.

2020-05-29  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
	PR fortran/95090
	* class.c (get_unique_type_string): Enlarge temporary for
	name-mangling.  Use strncpy to prevent buffer overrun.
	(get_unique_hashed_string): Enlarge temporary.
	(gfc_hash_value): Enlarge temporary for name-mangling.

I have noticed we don't export these 6 symbols and thus the testcase
below fails to link.

2020-05-29  Jakub Jelinek  <jakub@redhat.com>

	PR libfortran/95390
	* gfortran.dg/findloc_8.f90: New test.

	* Makefile.am (i_findloc0_c): Add findloc0_i10.c.
	(i_findloc1_c): Add findloc1_i10.c.
	* gfortran.map (GFORTRAN_10.2): New symbol version, export
	_gfortran_{,m,s}findloc{0,1}_c10 symbols.
	* Makefile.in: Regenerated.
	* generated/findloc0_c10.c: Generated.
	* generated/findloc1_c10.c: Generated.

Since r267272, which added location wrappers, cp_fold loses
TREE_NO_WARNING on a MODIFY_EXPR that finish_parenthesized_expr set, and
that results in a bogus -Wparentheses warning.

I.e., previously we had "b = 1" but now we have "VIEW_CONVERT_EXPR<bool>(b) = 1"
and cp_fold_maybe_rvalue folds away the location wrapper and so we do
2718             x = fold_build2_loc (loc, code, TREE_TYPE (x), op0, op1);
in cp_fold and the flag is lost.

	PR c++/95344
	* cp-gimplify.c (cp_fold) <case MODIFY_EXPR>: Don't set
	TREE_THIS_VOLATILE here.
	(cp_fold): Set it here along with TREE_NO_WARNING.

	* c-c++-common/Wparentheses-2.c: New test.

We weren't able to find OBJ_TYPE_REF_OBJECT walking through
OBJ_TYPE_REF_EXPR because we had folded away the ADDR_EXPR.

gcc/cp/ChangeLog:

	PR c++/95311
	PR c++/95221
	* class.c (build_vfn_ref): Don't fold the INDIRECT_REF.

gcc/testsuite/ChangeLog:

	PR c++/95311
	* g++.dg/ubsan/vptr-16.C: New test.

contrib/ChangeLog:

	* config-list.mk (LIST): Remove rs6000-ibm-aix5.3.0.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Find empty change descriptions.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: New patch that tests that.

Pushed to master.

maintainer-scripts/ChangeLog:

	* bugzilla-close-candidate.py: Fix sorting of branches.

Tested and pushed to master.

maintainer-scripts/ChangeLog:

	* bugzilla-close-candidate.py: Fix parsing of SVN revisions.
	Fix skipping of PRs that contain Can be closed message.

When parsing a constraint-expression, a requires-clause or a
requires-expression, we temporarily increment processing_template_decl
so that we always obtain template trees which we could later reduce via
substitution even when not inside a template.

But incrementing processing_template_decl when we're already inside a
template has the unintended side effect of shifting up the template
parameter levels of a lambda defined inside one of these constructs,
which leads to confusion later during substitution into the lambda.

This patch fixes this issue by incrementing processing_template_decl
during parsing of these constructs only if it is 0.

Passes 'make check-c++', and also tested by building cmcstl2, does this
look OK to commit after a full bootstrap/regtest?

gcc/cp/ChangeLog:

	PR c++/92652
	PR c++/93698
	PR c++/94128
	* parser.c (cp_parser_requires_clause_expression): Temporarily
	increment processing_template_decl only if it is 0.
	(cp_parser_constraint_expression): Likewise.
	(cp_parser_requires_expression): Likewise.

gcc/testsuite/ChangeLog:

	PR c++/92652
	PR c++/93698
	PR c++/94128
	* g++.dg/cpp2a/concepts-lambda8.C: New test.
	* g++.dg/cpp2a/concepts-lambda9.C: New test.
	* g++.dg/cpp2a/concepts-lambda10.C: New test.

In the testcase below, the CONSTRUCTOR for 'field' contains a RANGE_EXPR
index:

  {{aggr_init_expr<...>, [1...2]={.off=1}}}

but get_or_insert_ctor_field isn't prepared to handle looking up a
RANGE_EXPR index.

This patch adds limited support to get_or_insert_ctor_field for looking
up a RANGE_EXPR index.  The limited scope of this patch should make it
more suitable for backporting, and more extensive support would be
needed only to handle self-modifying CONSTRUCTORs that contain a
RANGE_EXPR index, but I haven't yet been able to come up with a testcase
that actually creates such a CONSTRUCTOR.

gcc/cp/ChangeLog:

	PR c++/95241
	* constexpr.c (get_or_insert_ctor_field): Add limited support
	for RANGE_EXPR index lookups.

gcc/testsuite/ChangeLog:

	PR c++/95241
	* g++.dg/cpp0x/constexpr-array25.C: New test.

maintainer-scripts/ChangeLog:

	* bugzilla-close-candidate.py: Support both SVN and GIT messages
	in PRs. Remove need of usage of the bugzilla API key.

gcc/ChangeLog:

2020-05-28  Andrew Stubbs  <ams@codesourcery.com>

	* config/gcn/gcn-valu.md (add<mode>3_vcc_zext_dup): Add early clobber.
	(add<mode>3_vcc_zext_dup_exec): Likewise.
	(add<mode>3_vcc_zext_dup2): Likewise.
	(add<mode>3_vcc_zext_dup2_exec): Likewise.

Those methods are making a double lookup in case of insertion, they can
perform only one.

	PR libstdc++/95079
	* include/bits/hashtable_policy.h (_Insert_base<>::try_emplace): New.
	* include/bits/unordered_map.h (unordered_map<>::try_emplace): Adapt.
	(unordered_map<>::insert_or_assign): Adapt.

This adds SLP_TREE_REPRESENTATIVE - a representative stmt-info that
is used by SLP analysis and code generation.  This avoids the need
for the hack in vect_slp_rearrange_stmts which previously avoided
to re-arrange stmts that might not have been isomorphic because
of operand swapping.  It also plays nice with future directions of SLP
and for the forseeable future is easier than replicating more and
more info in the SLP node as long as non-SLP is in-tree.

2020-05-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/95272
	* tree-vectorizer.h (_slp_tree::representative): Add.
	(SLP_TREE_REPRESENTATIVE): Likewise.
	* tree-vect-loop.c (vectorizable_reduction): Adjust SLP
	node gathering.
	(vectorizable_live_operation): Use the representative to
	attach the reduction info to.
	* tree-vect-slp.c (_slp_tree::_slp_tree): Initialize
	SLP_TREE_REPRESENTATIVE.
	(vect_create_new_slp_node): Likewise.
	(slp_copy_subtree): Copy it.
	(vect_slp_rearrange_stmts): Re-arrange even COND_EXPR stmts.
	(vect_slp_analyze_node_operations_1): Pass the representative
	to vect_analyze_stmt.
	(vect_schedule_slp_instance): Pass the representative to
	vect_transform_stmt.

	* gcc.dg/vect/pr95272.c: New testcase.

The previous fix clashed with the rewrite to emit SLP invariants
during the SLP walk.  Thus the following adjusts the SLP tree
hacking vectorizable_shift does appropriately.

Still resisting the attempt of a rewrite of vectorizable_shift ...

2020-05-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/95356
	* tree-vect-stmts.c (vectorizable_shift): Do in-place SLP
	node hacking during analysis.

it turns out I lost one hunk in the patch disabling extra streaming
which causes streamer to go out of sync in the case non-trivial scc
containing the node being streamed appears in local stream (which seems
quite rare since it does not happen during bootstrap).

2020-05-29  Jan Hubicka  <hubicka@ucw.cz>

	PR lto/95362
	* lto-streamer-out.c (lto_output_tree): Disable redundant streaming.

Simple documentation update based on usage of GIT by both
LLVM and GCC.

libsanitizer/ChangeLog:

	* HOWTO_MERGE: Do not mention not existing argument.
	* README.gcc: Update LLVM repository location.

I've just tested the script and I'm going to install the patch
to all active branches.

contrib/ChangeLog:

	* git-backport.py: The script did 'git co HEAD~' when
	there was no modified ChangeLog file in a successful
	git cherry pick.
	Run cherry-pick --continue without editor.

2020-05-29  Richard Biener  <rguenther@suse.de>

	PR tree-optimization/95403
	* tree-vect-stmts.c (vect_init_vector_1): Guard against NULL
	stmt_vinfo.

	* gfortran.dg/vect/pr95403.f: New testcase.

As noticed by Arseny, I got the condition when to call the add removal hook
wrong wrong.  Fixed thusly.

2020-05-28  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/95315
	* omp-general.c (omp_resolve_declare_variant): Fix up addition of
	declare variant cgraph node removal callback.

	* gcc.dg/gomp/pr95315-2.c: New test.

In the following testcase, store_expr of e.g. 97 bytes long string literal
into 1MB long array is implemented by copying the 97 bytes from .rodata
section, followed by clearing the remaining bytes.  But, as the STRING_CST
has type char[1024*1024], we actually allocate whole 1MB in .rodata section
for it, even when we only use the first 97 bytes from that.

The following patch tweaks it so that if we are going to initialize only the
small part from it, we don't emit all the zeros that we never use after it.

2020-05-29  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/95052
	* expr.c (store_expr): If expr_size is constant and significantly
	larger than TREE_STRING_LENGTH, set temp to just the
	TREE_STRING_LENGTH portion of the STRING_CST.

	* gcc.target/i386/pr95052.c: New test.

This makes sure to fold generated stmts so they do not survive
until RTL expansion and cause awkward code generation.

2020-05-29  Richard Biener <rguenther@suse.de>

	PR tree-optimization/95393
	* tree-ssa-phiopt.c (minmax_replacement): Use gimple_build
	to build the min/max expression so we simplify cases like
	MAX(0, s) immediately.

	* gcc.dg/tree-ssa/phi-opt-21.c: New testcase.
	* g++.dg/vect/slp-pr87105.cc: Adjust.

Extended patterns for these instructions to support unpacked vectors.
BIC will have to wait, as there is not currently support for unpacked
NOT.

2020-05-29  Joe Ramsay  <joe.ramsay@arm.com>

gcc/
	* config/aarch64/aarch64-sve.md (<LOGICAL:optab><mode>3): Add support
	for unpacked EOR, ORR, AND.

gcc/testsuite/
	* gcc.target/aarch64/sve/load_const_offset_2.c: Force using packed
	vectors.
	* gcc.target/aarch64/sve/logical_unpacked_and_1.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_2.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_3.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_4.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_5.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_6.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_and_7.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_1.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_2.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_3.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_4.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_5.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_6.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_eor_7.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_1.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_2.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_3.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_4.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_5.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_6.c: New test.
	* gcc.target/aarch64/sve/logical_unpacked_orr_7.c: New test.
	* gcc.target/aarch64/sve/scatter_store_6.c: Force using packed vectors.
	* gcc.target/aarch64/sve/scatter_store_7.c: Force using packed vectors.
	* gcc.target/aarch64/sve/strided_load_3.c: Force using packed vectors.
	* gcc.target/aarch64/sve/strided_store_3.c: Force using packed vectors.
	* gcc.target/aarch64/sve/unpack_signed_1.c: Force using packed vectors.

The patch is about to handle situations like seen
in 3ea6977d.

contrib/ChangeLog:

	* gcc-changelog/git_commit.py: Properly
	handle duplicite authors.
	* gcc-changelog/test_email.py: New test.
	* gcc-changelog/test_patches.txt: New patch.

Two years ago Paolo has added the
  else if (processing_template_decl && !COMPLETE_TYPE_P (type))
    pedwarn (...);
lines into cp_finish_decomp.  For type dependent decl we punt much earlier,
but even for types which aren't type dependent COMPLETE_TYPE_P might be
false as this testcase shows, so this patch tries to complete_type first
(the reason for writing it that way is that it is then followed by another
else if and if complete_type returns error_mark_node, we shouldn't report
anything, as a bug should have been reported already.

2020-05-28  Jakub Jelinek  <jakub@redhat.com>

	PR c++/95328
	* decl.c (cp_finish_decomp): Call complete_type before checking
	COMPLETE_TYPE_P.

	* g++.dg/cpp1z/decomp53.C: New test.

The use of KIND, LEN, RE, and IM inquiry references for applicable intrinsic
types is valid only for suffienctly new Fortran standards.  Add appropriate
check.

2020-05-28  Harald Anlauf  <anlauf@gmx.de>

gcc/fortran/
	PR fortran/95373
	* primary.c (is_inquiry_ref): Check validity of inquiry
	references against selected Fortran standard.

gcc/testsuite/
	PR fortran/95373
	* gfortran.dg/pr95373_1.f90: New test.
	* gfortran.dg/pr95373_2.f90: New test.

The initial commit for this PR uncovered a latent issue with unit locking
in the Fortran run-time library.  Add check for valid unit.

2020-05-28  Harald Anlauf  <anlauf@gmx.de>

libgfortran/
	PR libfortran/95104
	* io/unit.c (unlock_unit): Guard by check for NULL pointer.

In r9-297 I was trying to be more flexible and treat static data members of
class templates more like variable templates, where the type need not be
determined until the variable is instantiated, but I suppose that in a class
the types of all the non-template members need to be determined at the time
of class instantiation.

gcc/cp/ChangeLog:

	PR c++/94926
	* decl.c (cp_finish_decl): Revert r9-297 change.
	(check_static_variable_definition): Likewise.
	* constexpr.c (ensure_literal_type_for_constexpr_object): Likewise.
	* pt.c (instantiate_decl): Return early on type error.

gcc/testsuite/ChangeLog:

	* g++.dg/cpp1z/pr86648.C: Expect error.
	* g++.dg/cpp1z/static2.C: Expect error.
	* g++.dg/cpp0x/nsdmi16.C: New test.

2020-05-28  Nicolas Bértolo  <nicolasbertolo@gmail.com>

/ChangeLog:
	* configure.ac: Don't require --enable-host-shared when building
	for Mingw.
	* configure: Regenerate.

2020-05-28  Nicolas Bértolo  <nicolasbertolo@gmail.com>

gcc/ChangeLog:
	* Makefile.in: don't look for libiberty in the "pic" subdirectory
	when building for Mingw. Add dependency on xgcc with the proper
	extension.

2020-05-28  Nicolas Bértolo  <nicolasbertolo@gmail.com>

gcc/c/ChangeLog:
	* Make-lang.in: Remove extra slash.

2020-05-28  Nicolas Bértolo  <nicolasbertolo@gmail.com>

gcc/jit/ChangeLog:
	* Make-lang.in: Remove extra slash. Build libgccjit.dll and its
	import library in Windows.
	* config-lang.in: Update comment about --enable-host-shared.
	* jit-w32.h: New file.
	* jit-w32.c: New file.
	(print_last_error): New function that prints the error
	string corresponding to GetLastError().
	(get_TOKEN_USER_current_user): Helper function used for getting
	the SID belonging to the current user.
	(create_directory_for_current_user): Helper function to create
	a directory with permissions such that only the current user can
	access it.
	(win_mkdtemp): Create a temporary directory using Windows APIs.
	* jit-playback.c: Do not chmod files in Windows. Use LoadLibrary,
	FreeLibrary and GetProcAddress instead of libdl.
	* jit-result.h, jit-result.c: Introduce result::handle_t to
	abstract over the types used for dynamic library handles.
	* jit-tempdir.c: Do not use mkdtemp() in Windows, use
	win_mkdtemp().

	* config/h8300/logical.md (bclrhi_msx): Remove pattern.

	* config/h8300/logical.md (HImode H8/SX bit-and splitter): Don't
	make a nonzero adjustment to the memory offset.
	(b<ior,xor>hi_msx): Turn into a splitter.

The bitregion_end field points to the next bit after the region.

gcc/ChangeLog
	* gimple-ssa-store-merging.c (merged_store_group::can_be_merged_into):
	Fix off-by-one error.

	* g++.dg/cpp0x/initlist-array12.C: Fix the definition of
	initializer_list for ilp32 target.

This test uses C++11 features so should only run in c++11.

	* g++.dg/ext/tmplattr10.C: Only run in c++11.

This reverts commit 7e58fe0e.

Check "! int128" instead of ilp32 since ILP32 targets can support int128.

gcc/testsuite/

	* gcc.dg/builtin-bswap-10.c: Check "! int128" instead of ilp32

Based on a patch in the comments of the PR. That patch fixed this
problem but caused the test cases for PR93484 to fail. It has been
changed to reduce initialisation expressions if the expression is
not EXPR_VARIABLE and not EXPR_CONSTANT.

2020-05-28  Steven G. Kargl  <kargl@gcc.gnu.org>
	    Mark Eggleston  <markeggleston@gcc.gnu.org>

gcc/fortran/

	PR fortran/94397
	* match.c (gfc_match_type_spec): New variable ok initialised
	to true. Set ok with the return value of gfc_reduce_init_expr
	called only if the expression is not EXPR_CONSTANT and is not
	EXPR_VARIABLE. Add !ok to the check for type not being integer
	or the rank being greater than zero.

2020-05-28  Mark Eggleston  <markeggleston@gcc.gnu.org>

gcc/testsuite/

	PR fortran/94397
	* gfortran.dg/pr94397.F90: New test.