jakub [Fri, 21 Jun 2019 21:38:35 +0000 (21:38 +0000)]
* tree-vect-data-refs.c (vect_find_stmt_data_reference): Handle
even zero DR_OFFSET, but DR_BASE_ADDRESS of POINTER_PLUS_EXPR
containing the offset as possible simd lane access. Look through
widening conversion. Move the
TREE_CODE (DR_INIT (newdr)) == INTEGER_CST test earlier and reindent.
mpolacek [Fri, 21 Jun 2019 20:43:47 +0000 (20:43 +0000)]
PR c++/61490 - qualified-id in friend function definition.
* decl.c (grokdeclarator): Diagnose qualified-id in friend function
definition. Improve location for diagnostics of friend functions.
* g++.dg/diagnostic/friend2.C: New test.
* g++.dg/diagnostic/friend3.C: New test.
mpolacek [Fri, 21 Jun 2019 20:32:06 +0000 (20:32 +0000)]
PR c++/60223 - ICE with T{} in non-deduced context.
* pt.c (unify): Allow COMPOUND_LITERAL_P in a non-deduced context.
* g++.dg/cpp0x/nondeduced1.C: New test.
* g++.dg/cpp0x/nondeduced2.C: New test.
* g++.dg/cpp0x/nondeduced3.C: New test.
* g++.dg/cpp0x/nondeduced4.C: New test.
mpolacek [Fri, 21 Jun 2019 20:26:54 +0000 (20:26 +0000)]
PR c++/64235 - missing syntax error with invalid alignas.
* parser.c (cp_parser_std_attribute_spec): Commit to tentative parse
if there's a missing close paren.
kargl [Fri, 21 Jun 2019 20:24:01 +0000 (20:24 +0000)]
2019-06-21 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67884
* resolve.c (deferred_requirements) : Check only the result variable.
(resolve_fl_procedure): Check deferred requirements on functions.
2019-06-21 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/67884
* gfortran.dg/dummy_procedure_8.f90: Remove a test that is ...
* gfortran.dg/pr67884.f90: ... covered here. New test.
mpolacek [Fri, 21 Jun 2019 20:19:24 +0000 (20:19 +0000)]
PR c++/90490 - fix decltype issues in noexcept-specifier.
* except.c (build_noexcept_spec): Call
instantiate_non_dependent_expr_sfinae before
build_converted_constant_expr instead of calling
instantiate_non_dependent_expr after it. Add
processing_template_decl_sentinel.
* g++.dg/cpp0x/noexcept43.C: New test.
* g++.dg/cpp0x/noexcept44.C: New test.
Darwin has had long long functions for some considerable time and these are
exposed in Darwin8 and Darwin11+ headers. However, for some reason it was
elected to hide them behind __STRICT_ANSI__ and __STDC_VERSION__ on Darwin9
and Darwin10. This is a problem for G++/libstdc++ that expects the functions
to be available for strict ansi (-std=c++14, for example) and without
defining __STDC_VERSION__. The fix here follows the pattern used in
Darwin11+ headers where the functions may be explicitly hidden by defining
__DARWIN_NO_LONG_LONG.
This fixes the tr1 testsuite fails seen on Darwin9 and 10.
2019-06-21 Iain Sandoe <iain@sandoe.co.uk>
* inclhack.def: Replace the complex test using __STRICT_ANSI__ and
__STDC_VERSION__ with a test using __DARWIN_NO_LONG_LONG.
Ensure that the top level math.h uses <> to wrap included headers
rather than "".
* fixincl.x: Regenerated.
* tests/base/architecture/ppc/math.h: Update test to include the
__DARWIN_NO_LONG_LONG case.
iains [Fri, 21 Jun 2019 19:03:45 +0000 (19:03 +0000)]
[Darwin, fixincludes] Fix Darwin14 header issues.
There are two issues with the Darwin14 (SDK) headers in which unguarded
advanced syntax elements causes any code including these headers to fail.
2019-06-21 Iain Sandoe <iain@sandoe.co.uk>
* inclhack.def: Guard __has_attribute and __has_extension in
os/base.h.
Guard Apple blocks syntax in dispatch/object.h.
* fixincl.x: Regenerate.
* tests/base/dispatch/object.h: New file.
* tests/base/os/base.h: New file.
* c.opt (Wswitch-outside-range): Added new option.
* c-warn.c (c_do_switch_warnings): Use OPT_Wswitch-outside-range.
* c-c++-common/Wswitch-outside-range-1.c: New test.
* c-c++-common/Wswitch-outside-range-2.c: New test.
* c-c++-common/Wswitch-outside-range-3.c: New test.
* c-c++-common/Wswitch-outside-range-4.c: New test.
ian [Fri, 21 Jun 2019 14:34:26 +0000 (14:34 +0000)]
compiler: omit write barrier for assignment to *(convert(&local))
Assignments to local variables don't need a write barrier. But
currently the compiler inserts a write barrier if the LHS is a
local variable with type converted, as *(convert(&local)). Let
the compiler recognize this pattern and omit the write barrier.
ian [Fri, 21 Jun 2019 14:14:58 +0000 (14:14 +0000)]
compiler: open code string slice expressions
Currently a string slice expression is implemented with a runtime
call __go_string_slice. Change it to open code it, which is more
efficient, and allows the backend to further optimize it.
Also omit the write barrier for length-only update (i.e.
s = s[:n]).
jakub [Fri, 21 Jun 2019 06:48:57 +0000 (06:48 +0000)]
* omp-low.c (lower_rec_simd_input_clauses): Add rvar2 argument,
create another "omp scan inscan exclusive" array if
!ctx->scan_inclusive.
(lower_rec_input_clauses): Handle exclusive scan inscan reductions.
(lower_omp_scan): Likewise.
* tree-vectorizer.h (struct _stmt_vec_info): Use 3-bit instead of
2-bit bitfield for simd_lane_access_p member.
* tree-vect-data-refs.c (vect_analyze_data_refs): Also handle
aux == (void *)-4 as simd lane access.
* tree-vect-stmts.c (check_scan_store): Handle exclusive scan. Update
comment with permutations to show the canonical permutation order.
(vectorizable_scan_store): Handle exclusive scan.
(vectorizable_store): Call vectorizable_scan_store even for
STMT_VINFO_SIMD_LANE_ACCESS_P > 3.
* gcc.dg/vect/vect-simd-12.c: New test.
* gcc.dg/vect/vect-simd-13.c: New test.
* gcc.dg/vect/vect-simd-14.c: New test.
* gcc.dg/vect/vect-simd-15.c: New test.
* gcc.target/i386/sse2-vect-simd-12.c: New test.
* gcc.target/i386/sse2-vect-simd-13.c: New test.
* gcc.target/i386/sse2-vect-simd-14.c: New test.
* gcc.target/i386/sse2-vect-simd-15.c: New test.
* gcc.target/i386/avx2-vect-simd-12.c: New test.
* gcc.target/i386/avx2-vect-simd-13.c: New test.
* gcc.target/i386/avx2-vect-simd-14.c: New test.
* gcc.target/i386/avx2-vect-simd-15.c: New test.
* gcc.target/i386/avx512f-vect-simd-12.c: New test.
* gcc.target/i386/avx512f-vect-simd-13.c: New test.
* gcc.target/i386/avx512f-vect-simd-14.c: New test.
* gcc.target/i386/avx512bw-vect-simd-15.c: New test.
* g++.dg/vect/simd-6.cc: New test.
* g++.dg/vect/simd-7.cc: New test.
* g++.dg/vect/simd-8.cc: New test.
* g++.dg/vect/simd-9.cc: New test.
* c-c++-common/gomp/scan-2.c: Don't expect any diagnostics.
jakub [Fri, 21 Jun 2019 06:45:59 +0000 (06:45 +0000)]
* tree-vect-data-refs.c (vect_find_stmt_data_reference): Handle
"omp simd array" arrays with one byte elements.
* gcc.dg/vect/vect-simd-11.c: New test.
* gcc.target/i386/sse2-vect-simd-11.c: New test.
* gcc.target/i386/avx2-vect-simd-11.c: New test.
* gcc.target/i386/avx512bw-vect-simd-11.c: New test.
kargl [Thu, 20 Jun 2019 22:16:29 +0000 (22:16 +0000)]
2019-06-20 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/77632
* /decl.c (variable_decl): Mark a variable that is a target in pointer
initialization when in PROGRAM, MODULE, or SUBMODULE scope with an
implicit save.
2019-06-20 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/77632
* gfortran.dg/pr77632_1.f90: New test.
uros [Thu, 20 Jun 2019 21:07:38 +0000 (21:07 +0000)]
* config/alpha/alpha.md (@unaligned_store<mode>):
Rename from unaligned_store<mode>.
(@reload_in<mode>_aligned): Rename from reload_in<mode>_aligned.
* config/alpha/sync.md (@load_locked_<mode>): Rename
from load_locked_<mode>.
(@store_conditional_<mode>): Rename from store_conditional_<mode>.
(@atomic_compare_and_swap<mode>_1): Rename
from atomic_compare_and_swap<mode>_1.
(@atomic_exchange<mode>_1): Rename from atomic_exchange<mode>_1.
* config/alpha/alpha.c (alpha_expand_mov_nobwx):
Use gen_reload_in_aligned and gen_unaligned_store.
(emit_load_locked): Remove.
(emit_store_conditional): Ditto.
(alpha_split_atomic_op): Use gen_load_locked and gen_store_conditional.
(alpha_split_compare_and_swap): Ditto.
(alpha_expand_compare_and_swap_12): Use gen_atomic_compare_and_swap_1.
(alpha_split_compare_and_swap_12): Use gen_load_locked
and gen_store_conditional.
(alpha_split_atomic_exchange): Ditto.
(alpha_expand_atomic_exchange_12): Use gen_atomic_exchange_1.
(alpha_split_atomic_exchange_12): Use gen_load_locked
and gen_store_conditional.
rearnsha [Thu, 20 Jun 2019 17:27:06 +0000 (17:27 +0000)]
[aarch64] Refactor common errata work-around specs
With the addition of the AArch64 NetBSD support code we now have four
ports all using and defining the same errata work-around headers.
That's silly and long-term becomes a maintenance burden.
This patch factors all that code into a single header to eliminate all
the duplication.
* config/aarch64/aarch64-errata.h: New file.
* config/aarch64/aarch64-elf-raw.h (CA53_ERR_835769_SPEC): Delete.
(CA53_ERR_843419_SPEC): Delete.
(LINK_SPEC): Use AARCH64_ERRATA_LINK_SPEC instead of above.
* config/aarch64/aarch64-linux.h: Likewise.
* config/aarch64/aarch64-netbsd.h: Likewise.
* config/aarch64/aarch64-freebsd.h: Likewise.
hubicka [Thu, 20 Jun 2019 14:18:02 +0000 (14:18 +0000)]
* tree-ssa-alias.c (aliasing_component_refs_p): Remove ref2_is_decl
parameter; it has no use in gimple memory model.
(indirect_ref_may_alias_decl_p): Update.
* gcc.c-torture/execute/alias-access-path-1.c: New testcase.
redi [Thu, 20 Jun 2019 14:17:57 +0000 (14:17 +0000)]
Skip libstdc++ debug build in early bootstrap stages
As mentioned in PR 90770, this is a patch that Debian have been carrying
for some time. The additional unoptimized copies of libstdc++ libs that
get built during each stage are never going to be used, so don't bother
building them.
For a profiled bootstrap this means we won't train the compiler on the
unoptimized library code with assertions enabled, but that doesn't seem
like a big problem, as the same code has already been compiled once for
the main libstdc++ library.
* acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
stage of bootstrap.
* configure: Regenerate.
tkoenig [Thu, 20 Jun 2019 11:56:50 +0000 (11:56 +0000)]
2019-06-20 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/90937
* trans-types.c (get_formal_from_actual_arglist): Get symbol from
current namespace so it will be freed later. If symbol is of type
character, get an empty character length.
2019-06-20 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/90937
* gfortran.dg/external_procedure_4.f90: New test.
redi [Thu, 20 Jun 2019 09:04:55 +0000 (09:04 +0000)]
Improve tests for std::vector<bool> printer
The current tests wouldn't notice if the vector<bool> contents were
printed in reverse, because it would read the same forwards and
backwards. Change the content so the tests would fail if that happened.
* testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
vector<bool> for test.
* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
jakub [Thu, 20 Jun 2019 07:06:08 +0000 (07:06 +0000)]
* tree-vect-stmts.c (enum scan_store_kind): New type.
(scan_store_can_perm_p): Change last argument from int * to
vec<enum scan_store_kind> *, record precisely which permutations
need whole vector left shift or that plus VEC_COND_EXPR.
(vectorizable_scan_store): Adjust caller, use whole vector left shift
and additional VEC_COND_EXPR only for those iterations that need it.
redi [Wed, 19 Jun 2019 22:57:10 +0000 (22:57 +0000)]
Fix non-standard behaviour of std::istream_iterator
The current implementation of istream_iterator allows the iterator to be
reused after reaching end-of-stream, so that subsequent reads from the
stream can succeed (e.g. if the stream state has been cleared and stream
position changed from EOF). The P0738R2 paper clarified that the
expected behaviour is to set the stream pointer to null after reaching
end-of-stream, preventing further reads.
This implements that requirement, and adds the new default constructor
to std::ostream_iterator.
* include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
private.
(istream_iterator::_M_read()): Do not check stream state before
attempting extraction. Set stream pointer to null when extraction
fails (P0738R2).
(operator==(const istream_iterator&, const istream_iterator&)): Change
to be a hidden friend of istream_iterator.
(operator!=(const istream_iterator&, const istream_iterator&)):
Likewise.
(ostream_iterator::ostream_iterator()): Add default constructor.
(ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
addressof.
* testsuite/24_iterators/istream_iterator/1.cc: New test.
* testsuite/24_iterators/ostream_iterator/1.cc: New test.
* testsuite/24_iterators/ostream_iterator/70766.cc: Also check
constructor taking a string.
* testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
New test.
redi [Wed, 19 Jun 2019 22:57:06 +0000 (22:57 +0000)]
Have std::vector printer's iterator return bool for vector<bool>
Have the pretty-printer for 'std::vector<bool>' return a
value of type 'bool' rather than an 'int'.
This way, the type is clear and that can be used for better
display and a 'gdb.Value' constructed from the returned value
will have type 'bool' again, not e.g. 'long long' as happened
previously (at least with GDB 8.2.1 on amd64).
2019-06-19 Michael Weghorn <m.weghorn@posteo.de>
Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/90945
* python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
values of type bool for vector<bool> elements.
* testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
redi [Wed, 19 Jun 2019 22:57:02 +0000 (22:57 +0000)]
PR libstdc++/90920 restore previous checks for empty ranges
The change in r263433 broke the contract of the __rotate functions, by no
longer accepting empty ranges. That means that callers which inlined the
old version of std::rotate (without checks) that end up linking to a new
definition of std::__rotate (also without checks) could perform a divide
by zero and crash.
This restores the old contract of the __rotate overloads.
PR libstdc++/90920 partially revert r263433
* include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
(rotate): Remove checks.
* testsuite/25_algorithms/rotate/90920.cc: New test.
mpolacek [Wed, 19 Jun 2019 21:27:45 +0000 (21:27 +0000)]
PR c++/60364 - noreturn after first decl not diagnosed.
* attribs.c (get_attribute_namespace): No longer static.
(decl_attributes): Avoid shadowing. Preserve the C++11 form for C++11
attributes.
(attr_noreturn_exclusions): Make it extern.
* attribs.h (get_attribute_namespace): Declare.
* tree-inline.c (function_attribute_inlinable_p): Use
get_attribute_name.
* c-attribs.c (handle_noreturn_attribute): No longer static.
* c-common.h (handle_noreturn_attribute, attr_noreturn_exclusions):
Declare.
* c-format.c (check_function_format): Use get_attribute_name.
* decl.c (duplicate_decls): Give an error when a function is
declared [[noreturn]] after its first declaration.
* parser.c (cp_parser_std_attribute): Don't treat C++11 noreturn
attribute as equivalent to GNU's.
* tree.c (std_attribute_table): Add noreturn.
* g++.dg/warn/noreturn-8.C: New test.
* g++.dg/warn/noreturn-9.C: New test.
* g++.dg/warn/noreturn-10.C: New test.
* g++.dg/warn/noreturn-11.C: New test.
iains [Wed, 19 Jun 2019 19:16:17 +0000 (19:16 +0000)]
[Darwin, specs] Tidy some more linker options.
pie, no-pie and rdynamic are driver options, we can process them in the
relevant place and drop them once dealt with. There's no need to generate
a new header to process the "no_compact_unwind" which is applied on the
basis of the target system.
Support for the -pie, -no_pie and -no_compact_unwind options should ideally
be checked at configure time, however the status quo is to assert that linkers
capable of targeting the relevant systems support these options (i.e. we trust
that the user doesn't attempt to configure inappropriately).
TODO: check the availability of the linker opts in configure rather than
trusting to the user.
This will fix the fail of pie-7.c, which is a result of failing to handle the
no-pie driver option.
2019-06-19 Iain Sandoe <iain@sandoe.co.uk>
* config/darwin.h (DRIVER_SELF_SPECS): Add RDYNAMIC, DARWIN_PIE_SPEC
and DARWIN_NOPIE_SPEC.
(RDYNAMIC): New, modified from DARWIN_EXPORT_DYNAMIC.
(DARWIN_PIE_SPEC): Collate from darwin.h and darwin9.h.
(DARWIN_NOPIE_SPEC): Collate from darwin10.h.
(DARWIN_NOCOMPACT_UNWIND): New from darwin10.h
(DARWIN_EXPORT_DYNAMIC): Delete.
* config/darwin10.h (LINK_GCC_C_SEQUENCE_SPEC): Move no_compact_unwind
and pie options processing to darwin.h.
* config/darwin9.h (DARWIN_PIE_SPEC): Move pie processing to darwin.h
msebor [Wed, 19 Jun 2019 19:08:24 +0000 (19:08 +0000)]
PR translation/90156 - add linter check suggesting to replace %<%s%> with %qs
gcc/c-family/ChangeLog:
PR translation/90156
* c-format.c (function_format_info::format_type): Adjust type.
(function_format_info::is_raw): New member.
(decode_format_type): Adjust signature. Handle "raw" diag attributes.
(decode_format_attr): Adjust call to decode_format_type.
Avoid a redundant call to convert_format_name_to_system_name.
Avoid abbreviating the word "arguments" in a diagnostic.
(format_warning_substr): New function.
(avoid_dollar_number): Quote dollar sign in a diagnostic.
(finish_dollar_format_checking): Same.
(check_format_info): Same.
(struct baltoks_t): New.
(c_opers, c_keywords, cxx_keywords, badwords, contrs): New arrays.
(maybe_diag_unbalanced_tokens, check_tokens, check_plain): New
functions.
(check_format_info_main): Call check_plain. Use baltoks_t. Call
maybe_diag_unbalanced_tokens.
(handle_format_attribute): Spell out the word "arguments" in
a diagnostic.
redi [Wed, 19 Jun 2019 15:29:49 +0000 (15:29 +0000)]
Fix value category bugs in std::reduce
* include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
category used in invocable check.
(reduce(Iter, Iter, T)): Pass initial value as rvalue.
* testsuite/26_numerics/reduce/2.cc: New test.
ian [Wed, 19 Jun 2019 15:13:53 +0000 (15:13 +0000)]
compiler: optimize string concatenations
runtime.concatstring{2,3,4,5} are just wrappers of concatstrings.
These wrappers don't provide any benefit, at least in the C
calling convention we use, where passing arrays by value isn't an
efficient thing. Change it to always use concatstrings.
Also, the cap field of the slice passed to concatstrings is not
necessary. So change it to pass a pointer and a length directly,
which is more efficient than passing a slice header by value.
wilco [Wed, 19 Jun 2019 12:52:43 +0000 (12:52 +0000)]
Simplify setjmp and non-local goto implementation (PR84521)
This fixes and simplifies the setjmp and non-local goto implementation.
Currently the virtual frame pointer is saved when using __builtin_setjmp or
a non-local goto. Depending on whether a frame pointer is used, this may
either save SP or FP with an immediate offset. However the goto or longjmp
always updates the hard frame pointer.
A receiver veneer in the original function then assigns the hard frame pointer
to the virtual frame pointer, which should, if it works correctly, again assign
SP or FP. However the special elimination code in eliminate_regs_in_insn
doesn't do this correctly unless the frame pointer is used, and even if it
worked by writing SP, the frame pointer would still be corrupted.
A much simpler implementation is to always save and restore the hard frame
pointer. This avoids 2 redundant instructions which add/subtract the virtual
frame offset. A large amount of code can be removed as a result, including all
implementations of TARGET_BUILTIN_SETJMP_FRAME_VALUE (all of which already use
the hard frame pointer). The expansion of nonlocal_goto on PA can be simplied
to just restore the hard frame pointer.
This fixes the most obvious issues, however there are still issues on targets
which define HARD_FRAME_POINTER_IS_FRAME_POINTER (arm, mips).
Each function could have a different hard frame pointer, so a non-local goto
may restore the wrong frame pointer (TARGET_BUILTIN_SETJMP_FRAME_VALUE could
be useful for this).
The i386 TARGET_BUILTIN_SETJMP_FRAME_VALUE was incorrect: if stack_realign_fp
is true, it would save the hard frame pointer value but restore the virtual
frame pointer which according to ix86_initial_elimination_offset can have a
non-zero offset from the hard frame pointer.
The ia64 implementation of nonlocal_goto seems incorrect since the helper
function moves the the frame pointer value into the static chain register
(so this patch does nothing to make it better or worse).
AArch64 + x86-64 bootstrap OK, new test passes on AArch64, x86-64 and Arm.
jakub [Wed, 19 Jun 2019 10:00:04 +0000 (10:00 +0000)]
* doc/md.texi: Document vec_shl_<mode> pattern.
* optabs.def (vec_shl_optab): New optab.
* optabs.c (shift_amt_for_vec_perm_mask): Add shift_optab
argument, if == vec_shl_optab, check for left whole vector shift
pattern rather than right shift.
(expand_vec_perm_const): Add vec_shl_optab support.
* optabs-query.c (can_vec_perm_var_p): Mention also vec_shl optab
in the comment.
* tree-vect-generic.c (lower_vec_perm): Support permutations which
can be handled by vec_shl_optab.
* tree-vect-stmts.c (scan_store_can_perm_p): New function.
(check_scan_store): Use it.
(vectorizable_scan_store): If target can't do normal permutations,
try to use whole vector left shifts and if needed a VEC_COND_EXPR
after it.
* config/i386/sse.md (vec_shl_<mode>): New expander.
* gcc.dg/vect/vect-simd-8.c: If main is defined, don't include
tree-vect.h nor call check_vect.
* gcc.dg/vect/vect-simd-9.c: Likewise.
* gcc.dg/vect/vect-simd-10.c: New test.
* gcc.target/i386/sse2-vect-simd-8.c: New test.
* gcc.target/i386/sse2-vect-simd-9.c: New test.
* gcc.target/i386/sse2-vect-simd-10.c: New test.
* gcc.target/i386/avx2-vect-simd-8.c: New test.
* gcc.target/i386/avx2-vect-simd-9.c: New test.
* gcc.target/i386/avx2-vect-simd-10.c: New test.
* gcc.target/i386/avx512f-vect-simd-8.c: New test.
* gcc.target/i386/avx512f-vect-simd-9.c: New test.
* gcc.target/i386/avx512f-vect-simd-10.c: New test.
ian [Wed, 19 Jun 2019 04:53:51 +0000 (04:53 +0000)]
compiler: stack allocate a buffer for non-escaping string ops
For string concatenation, string to/from byte or rune slice
conversion, and int to string conversion, if the result does not
escape, we can allocate a small (32-element, or 4-byte for int to
string) buffer on stack, and pass it to the runtime function. If
the result fits in the buffer, it doesn't need to do a heap
allocation.
jvdelisle [Wed, 19 Jun 2019 03:02:21 +0000 (03:02 +0000)]
2019-06-19 Jim MacArthur <jim.macarthur@codethink.co.uk>
Mark Eggleston <mark.eggleston@codethink.com>
PR fortran/89103
* gfortran.texi: Add -fdec-blank-format-item
* invoke.texi: Add option to list of options.
* invoke.texi: Add to section on Commas in FORMAT specifications.
* io.c (check_format): At FMT_RPAREN goto finished if
-fdec-blank-format-item otherwise set error string.
* lang.opt: Add new option.
* options.c (set_dec_flags): Add SET_BITFLAG for
flag_dec_format_defaults.
* gfortran.dg/dec_format_empty_item_1.f: New test.
* gfortran.dg/dec_format_empty_item_2.f: New test.
* gfortran.dg/dec_format_empty_item_3.f: New test.
ian [Tue, 18 Jun 2019 23:55:50 +0000 (23:55 +0000)]
compiler: avoid copy for string([]byte) conversion used in string concatenation
If a string([]byte) conversion is used immediately in a string
concatenation, we don't need to copy the backing store of the
byte slice, as the runtime function doesn't hold any reference
to it.
redi [Tue, 18 Jun 2019 23:01:16 +0000 (23:01 +0000)]
Implement new serial algorithms from Parallelism TS (P0024R2)
These new (non-parallel) algorithms were added to C++17 along with the
parallel algorithms, but were missing from libstdc++.
* include/bits/algorithmfwd.h: Change title of doc group.
* include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
P0024R2.
* include/bits/stl_numeric.h: Define doc group and add algos to it.
* include/std/numeric (__is_random_access_iter): New internal trait.
(reduce, transform_reduce, exclusive_scan, inclusive_scan)
(transform_exclusive_scan, transform_inclusive_scan): Likewise.
* testsuite/25_algorithms/for_each/for_each_n.cc: New test.
* testsuite/26_numerics/exclusive_scan/1.cc: New test.
* testsuite/26_numerics/inclusive_scan/1.cc: New test.
* testsuite/26_numerics/reduce/1.cc: New test.
* testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
* testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
* testsuite/26_numerics/transform_reduce/1.cc: New test.
* testsuite/util/testsuite_iterators.h (test_container::size()): New
member function.
jcmvbkbc [Tue, 18 Jun 2019 22:19:12 +0000 (22:19 +0000)]
xtensa: fix PR target/90922
Stack pointer adjustment code in prologue missed a case of no
callee-saved registers and a stack frame size bigger than 128 bytes.
Handle that case.
This fixes the following gcc tests with call0 ABI:
gcc.c-torture/execute/stdarg-2.c
gcc.dg/torture/pr55882.c
gcc.dg/torture/pr57569.c
2019-06-18 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/xtensa.c (xtensa_expand_prologue): Add stack
pointer adjustment for the case of no callee-saved registers and
stack frame bigger than 128 bytes.
projects / thirdparty / gcc.git / log
