Input string consist of four parts:
  <primary arch>-<abi>-<additional arches>-<extensions>

and generator doing combination with <extensions> part, but it just
append the extension at the end of arch string, it might generate
invalid arch.

For example, without this patch `./multilib-generator rv32imafc-ilp32--d`
will generate:

MULTILIB_OPTIONS = march=rv32imafc/march=rv32imafcd mabi=ilp32
                                         ^^^^^^^^^^

and rv32imafcd is not in canonical order.

Tested with python 2.7 and python 3.6/3.7.

gcc/ChangeLog

	* gcc/config/riscv/multilib-generator: (canonical_order): New.
	(arch_canonicalize): Dito.
	Apply arch_canonicalize for alts.

From-SVN: r274137

	* parser.c (cp_parser_conversion_type_id): Call
	cp_parser_type_specifier_seq with CP_PARSER_FLAGS_TYPENAME_OPTIONAL
	instead of CP_PARSER_FLAGS_NONE.

	* g++.dg/cpp2a/typename17.C: New test.

From-SVN: r274136

gcc/testsuite/ChangeLog:
	* gcc.dg/uninit-pr50476.c: New test.

From-SVN: r274135

From-SVN: r274134

testsuite/ChangeLog:
	* g++.dg/pr60517.C: New test.

From-SVN: r274130

2019-08-02  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/future.md: New file.
	* config/rs6000/rs6000.md: Include future.md.
	* config/rs6000/t-rs6000 (MD_INCLUDES): Add future.md.

From-SVN: r274129

gcc/ChangeLog:

	* doc/extend.texi (Common Variable Attributes): Document alias
	attribute.

From-SVN: r274127

2019-08-05  Paolo Carlini  <paolo.carlini@oracle.com>

	* cp-tree.h (cp_expr_loc_or_input_loc): New.
	(cxx_incomplete_type_diagnostic): Use it.
	* call.c (build_converted_constant_expr_internal, convert_like_real,
	convert_arg_to_ellipsis, convert_for_arg_passing, build_over_call,
	build_cxx_call, perform_implicit_conversion_flags,
	initialize_reference): Likewise.
	* constexpr.c (cxx_eval_internal_function, cxx_eval_call_expression,
	eval_and_check_array_index, cxx_eval_store_expression,
	cxx_eval_statement_list, cxx_eval_loop_expr,
	cxx_eval_constant_expression, potential_constant_expression_1):
	Likewise.
	* constraint.cc (check_for_logical_overloads,
	satisfy_predicate_constraint): Likewise.
	* cp-gimplify.c (cp_gimplify_expr): Likewise.
	* cvt.c (cp_convert_to_pointer, convert_to_reference,
	cp_convert_and_check, ocp_convert, maybe_warn_nodiscard): Likewise.
	* decl.c (pop_switch): Likewise.
	* decl2.c (delete_sanity): Likewise.
	* error.c (location_of): Likewise.
	* init.c (maybe_warn_list_ctor, build_aggr_init,
	warn_placement_new_too_small, build_new_1, build_vec_init): Likewise.
	* lex.c (unqualified_name_lookup_error): Likewise.
	* parser.c (cp_parser_initializer_list, cp_parser_omp_for_cond):
	Likewise.
	* pt.c (check_for_bare_parameter_packs, check_valid_ptrmem_cst_expr,
	unify_arg_conversion, convert_nontype_argument,
	tsubst_copy_and_build, resolve_typename_type): Likewise.
	* semantics.c (maybe_convert_cond, finish_call_expr,
	cp_build_vec_convert): Likewise.
	* typeck.c (decay_conversion, rationalize_conditional_expr,
	cp_build_unary_op, build_x_compound_expr_from_list,
	maybe_warn_about_returning_address_of_local,
	maybe_warn_pessimizing_move): Likewise.
	* typeck2.c (check_narrowing, digest_init_r,
	process_init_constructor_array): Likewise.

From-SVN: r274124

This patch fixes PR c++/88095: class nontype template parameter UDL string
literals doesn't accepts deduction placeholder

It also addresses a latent issue; literal operator templates with template
parameter packs of literal class type were previously accepted.  The patch
corrects this and adds a test (udlit-class-nttp-neg.C).

This fix is needed for one of the char8_t remediation approaches documented
in P1423, and may be helpful for existing code bases impacted by the char8_t
changes adopted via P0482 for C++20.

gcc/cp/ChangeLog:

2019-08-02  Tom Honermann  <tom@honermann.net>

        * parser.c (cp_parser_template_declaration_after_parameters): Enable
        class template argument deduction for non-type template parameters
        in literal operator templates.

gcc/testsuite/ChangeLog:

2019-08-02  Tom Honermann  <tom@honermann.net>

        PR c++/88095
        * g++.dg/cpp2a/udlit-class-nttp-ctad.C: New test.
        * g++.dg/cpp2a/udlit-class-nttp-ctad-neg.C: New test.
        * g++.dg/cpp2a/udlit-class-nttp-ctad-neg2.C: New test.
        * g++.dg/cpp2a/udlit-class-nttp.C: New test.
        * g++.dg/cpp2a/udlit-class-nttp-neg.C: New test.
        * g++.dg/cpp2a/udlit-class-nttp-neg2.C: New test.

From-SVN: r274123

2019-08-05  Steven g. Kargl  <kargl@gcc.gnu.org>

	PR fortran/91372
	* decl.c (gfc_match_data): Allow an implied do-loop to nestle against
	DATA.

2019-08-05  Steven g. Kargl  <kargl@gcc.gnu.org>

	PR fortran/91372
	* gfortran.dg/pr91372.f90: New test.

From-SVN: r274122

	* c-opts.c (c_common_post_options): Enable -Wcomma-subscript by
	default for C++2a, unless -Wno-deprecated.
	* c.opt (Wcomma-subscript): New warning.

	* parser.c (cp_parser_postfix_open_square_expression): Warn about uses
	of a comma operator within a subscripting expression.
	(cp_parser_skip_to_closing_square_bracket_1): New function, made out
	of...
	(cp_parser_skip_to_closing_square_bracket): ...this.

	* doc/invoke.texi: Document -Wcomma-subscript.

	* g++.dg/cpp2a/comma1.C: New test.
	* g++.dg/cpp2a/comma2.C: New test.
	* g++.dg/cpp2a/comma3.C: New test.
	* g++.dg/cpp2a/comma4.C: New test.

From-SVN: r274121

From-SVN: r274120

Adding SVE intrinsics on top of the existing AArch64 intrinsics blows
the 12-bit function_code in tree_function_decl.  That bitfield has no
spare bits, but it comes at the end of the structure and is preceded
by a pointer, so on LP64 hosts there's currently a 32-bit hole at end.

This patch therefore makes function_code an independent field and
moves the bitfield to the 32-bit hole.

I wondered about instead making function_code 16 bits, so that the
patch leaves 28 spare bits instead of just 12.  That seemed a bit
short-term though; I can't guarantee that we won't blow 16 bits once
the SVE2 functions are added...

If we run out of bits again, we can start chomping from the top
of the enum.  E.g. 24 bits should surely be enough, but there's
no point paying the overhead of the masking until we need it.

2019-08-05  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* tree-core.h (tree_function_decl): Make function_code an
	independent field.  Group the remaining bitfields into bytes
	and move decl_type so that it contines to be at a byte boundary.
	Leave 12 bits for future expansion.

From-SVN: r274119

This patch folds IFN_MASK_LOAD and IFN_MASK_STOREs to normal accesses
if the mask is all-true.  This can happen for fully-masked loops that
didn't actually need to be (which could be handled by the vectoriser
instead), or for unrolled fully-masked loops whose first iteration is
guaranteed to operate on a full vector.  It's also useful when the
accesses are generated directly by intrinsics (to follow for SVE).

2019-08-05  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* gimple-fold.c (gimple_fold_mask_load_store_mem_ref)
	(gimple_fold_mask_load, gimple_fold_mask_store): New functions.
	(gimple_fold_call): Use them to fold IFN_MASK_LOAD and
	IFN_MASK_STORE.

gcc/testsuite/
	* gcc.target/aarch64/sve/mask_load_1.c: New test.

From-SVN: r274118

I needed to add another instance of this idiom, so thought it'd
be worth having a helper function.

2019-08-05  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* gimple.h (gimple_move_vops): Declare.
	* gimple.c (gimple_move_vops): New function
	* gimple-fold.c (replace_call_with_call_and_fold)
	(gimple_fold_builtin_memory_op, gimple_fold_builtin_memset)
	(gimple_fold_builtin_stpcpy, fold_builtin_atomic_compare_exchange)
	(gimple_fold_call): Use it.
	* ipa-param-manipulation.c (ipa_modify_call_arguments): Likewise.
	* tree-call-cdce.c (use_internal_fn): Likewise.
	* tree-if-conv.c (predicate_load_or_store): Likewise.
	* tree-ssa-ccp.c (optimize_atomic_bit_test_and): Likewise.
	* tree-ssa-math-opts.c (pass_cse_reciprocals::execute): Likewise.
	* tree-ssa-propagate.c (finish_update_gimple_call): Likewise.
	(update_call_from_tree): Likewise.
	* tree-vect-stmts.c (vectorizable_load): Likewise.
	* tree-vectorizer.c (adjust_simduid_builtins): Likewise.

From-SVN: r274117

2019-08-05  Jozef Lawrynowicz  <jozef.l@mittosystems.com>

	* gcc.target/msp430/pr80993.c: Add cleanup-saved-temps to final
	actions.

From-SVN: r274116

2019-08-05  Martin Liska  <mliska@suse.cz>

	PR c++/91334
	* tree-ssa-dce.c (propagate_necessity): Handle new operators
	with not arguments.
	(eliminate_unnecessary_stmts): Likewise.
2019-08-05  Martin Liska  <mliska@suse.cz>

	PR c++/91334
	* g++.dg/torture/pr91334.C: New test.

From-SVN: r274115

2019-08-05  Richard Biener  <rguenther@suse.de>

	PR middle-end/91169
	* fold-const.c (get_array_ctor_element_at_index): Create
	offset_ints according to the sign of the index type and treat
	that as signed if it is obviously so.

	* gnat.dg/array37.adb: New testcase.

From-SVN: r274114

	PR target/91341
	* config/i386/avxintrin.h (_mm256_loadu2_m128, _mm256_storeu2_m128,
	_mm256_loadu2_m128d, _mm256_storeu2_m128d, _mm256_loadu2_m128i,
	_mm256_storeu2_m128i): New function.

	* gcc.target/i386/avx-loadu2-m128-1.c: New test.
	* gcc.target/i386/avx-loadu2-m128-2.c: New test.
	* gcc.target/i386/avx-loadu2-m128d-1.c: New test.
	* gcc.target/i386/avx-loadu2-m128d-2.c: New test.
	* gcc.target/i386/avx-loadu2-m128i-1.c: New test.
	* gcc.target/i386/avx-loadu2-m128i-2.c: New test.
	* gcc.target/i386/avx-storeu2-m128-1.c: New test.
	* gcc.target/i386/avx-storeu2-m128-2.c: New test.
	* gcc.target/i386/avx-storeu2-m128d-1.c: New test.
	* gcc.target/i386/avx-storeu2-m128d-2.c: New test.
	* gcc.target/i386/avx-storeu2-m128i-1.c: New test.
	* gcc.target/i386/avx-storeu2-m128i-2.c: New test.

From-SVN: r274109

 - argument and return value for libcall won't promote at
   default_promote_function_mode_always_promote, however we expect it
   should sign-extend as normal function.

 - Witout this patch, this test case will fail at -march=rv64i -mabi=lp64.

 - The implementation of riscv_promote_function_mode is borrowed from MIPS.

gcc/ChangeLog

	* config/riscv/riscv.c (riscv_promote_function_mode): New.
	(TARGET_PROMOTE_FUNCTION_MODE): Use riscv_promote_function_mode.

gcc/testsuite/ChangeLog

	* gcc.target/riscv/promote-type-for-libcall.c: New.

From-SVN: r274107

rev 266496 (git ab6b1bb456) undefined some macros in rs6000/freebsd.h
but missed doing the same in rs6000/freebsd64.h.

	PR target/91349
	* config/rs6000/freebsd64.h (CPLUSPLUS_CPP_SPEC),
	(LINK_GCC_C_SEQUENCE_SPEC): Undef.

From-SVN: r274105

From-SVN: r274103

	* update_web_docs_svn: Proceed even if the invocation of
	sphinx fails.

From-SVN: r274099

2019-08-04  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/88227
	* check.c (oct2bin):  New function.  Convert octal string to binary.
	(hex2bin): New function.  Convert hexidecimal string to binary.
	(bin2real): New function.  Convert binary string to REAL.  Use
	oct2bin and hex2bin.
	(gfc_boz2real):  Use fallback conversion bin2real.

From-SVN: r274096

	* doc/xml/manual/documentation_hacking.xml: doxygen.org is now
	doxygen.nl.

From-SVN: r274094

	* doc/install.texi (Prerequisites): Remove reference to Tcl 8.6
	bug that was fixed in Tcl 8.6.1.

From-SVN: r274089

From-SVN: r274054

From-SVN: r274037

2019-08-02  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90985
	* decl.c (gfc_match_data): In free-form code, DATA be followed by
	whitespace.

2019-08-02  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90985
	* gfortran.dg/pr90985.f90: New test.

From-SVN: r274033

From-SVN: r274032

2019-08-02  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90297
	* match.c (gfc_match_equivalence): Check that EQUIVALENCE is followed
	by '('.

2019-08-02  Steven G. Kargl  <kargl@gcc.gnu.org>

	PR fortran/90297
	* gfortran.dg/equiv_10.f90: New test.

From-SVN: r274031

2019-08-02  Michael Meissner  <meissner@linux.ibm.com>

	* config/rs6000/future.md: New file.
	* config/rs6000/rs6000.md: Include future.md.
	* config/rs6000/t-rs6000 (MD_INCLUDES): Add future.md.

From-SVN: r274030

Introduce exception handler ABI #1 to ensure single release, no access
after release of reraised Machine_Occurrences, and no failure to
re-reraise a Machine_Occurrence.

Unlike Ada exceptions, foreign exceptions do not get a new
Machine_Occurrence upon reraise, but each handler would delete the
exception upon completion, normal or exceptional, save for the case of
a 'raise;' statement within the handler, that avoided the delete by
clearing the exception pointer that the cleanup would use to release
it.  The cleared exception pointer might then be used by a subsequent
reraise within the same handler.  Get_Current_Excep.all would also
expose the Machine_Occurrence to reuse by Reraise_Occurrence, even for
native exceptions.

Under ABI #1, Begin_Handler_v1 claims responsibility for releasing an
exception by saving its cleanup and setting it to Claimed_Cleanup.
End_Handler_v1 restores the cleanup and runs it, as long as it isn't
still Claimed_Cleanup (which indicates an enclosing handler has
already claimed responsibility for releasing it), and as long as the
same exception is not being propagated up (the next handler of the
propagating exception will then claim responsibility for releasing
it), so reraise no longer needs to clear the exception pointer, and it
can just propagate the exception, just like Reraise_Occurrence.

ABI #1 is fully interoperable with ABI #0, i.e., exception handlers
that call the #0 primitives can be linked together with ones that call
the #1 primitives, and they will not misbehave.  When a #1 handler
claims responsibility for releasing an exception, even #0 reraises
dynamically nested within it will refrain from releasing it.  However,
when a #0 handler is a handler of a foreign exception that would have
been responsible for releasing it with #1, a Reraise_Occurrence of
that foreign or other Machine_Occurrence-carrying exception may still
cause the exception to be released multiple times, and to be used
after it is first released, even if other handlers of the foreign
exception use #1.


for  gcc/ada/ChangeLog

	* libgnat/a-exexpr.adb (Begin_Handler_v1, End_Handler_v1): New.
	(Claimed_Cleanup): New.
	(Begin_Handler, End_Handler): Document.
	* gcc-interface/trans.c (gigi): Switch to exception handler
	ABI #1.
	(Exception_Handler_to_gnu_gcc): Save the original cleanup
	returned by begin handler, pass it to end handler, and use
	EH_ELSE_EXPR to pass a propagating exception to end handler.
	(gnat_to_gnu): Leave the exception pointer alone for reraise.
	(add_cleanup): Handle EH_ELSE_EXPR, require it by itself.

From-SVN: r274029

re PR c++/56428 ([C++11] "is not a constant expression" when comparing non-type template argument to nullptr)

	PR c++/56428
	* g++.dg/cpp0x/nontype4.C: New test.

From-SVN: r274028

re PR c++/53009 (pointer to static member function of template class is “invalid” as a template argument of another template class)

	PR c++/53009
	* g++.dg/cpp0x/nontype3.C: New test.

From-SVN: r274027

function.c (assign_parm_adjust_stack_rtl): Revise STRICT_ALIGNMENT check to use targetm.slow_unaligned_access instead.

2019-08-02  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * function.c (assign_parm_adjust_stack_rtl): Revise STRICT_ALIGNMENT
        check to use targetm.slow_unaligned_access instead.

From-SVN: r274025

re PR c++/77575 (Bogus error when alias template yielding a reference type used as template template argument)

	PR c++/77575
	* g++.dg/cpp0x/nontype2.C: New test.

From-SVN: r274024

2019-08-02  Bernd Edlinger  <bernd.edlinger@hotmail.de>

        * function.c (assign_param_data_one): Remove unused data members.

From-SVN: r274023

2019-08-02  Steve Ellcey  <sellcey@marvell.com>

	* gcc.target/aarch64/simd_pcs_attribute.c: New test.
	* gcc.target/aarch64/simd_pcs_attribute-2.c: Ditto.
	* gcc.target/aarch64/simd_pcs_attribute-3.c: Ditto.

From-SVN: r274020

2019-08-02  Steve Ellcey  <sellcey@marvell.com>

	* omp-simd-clone.c (simd_clone_adjust_return_type): Remove call to
	build_distinct_type_copy.
	(simd_clone_adjust_argument_types): Ditto.
	(simd_clone_adjust): Call build_distinct_type_copy here.
	(expand_simd_clones): Ditto.

From-SVN: r274019