Nikhil Benesch [Tue, 13 Oct 2020 06:51:30 +0000 (06:51 +0000)]
runtime: populate signal PC on NetBSD
The NetBSD libc provides an architecture-independent macro that can
extract the PC from a ucontext struct.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261740
Nikhil Benesch [Tue, 13 Oct 2020 07:06:11 +0000 (07:06 +0000)]
syscall: port fix for netbsd unix sockets from upstream
NetBSD does not include the null terminator when in its reported socket
length. Port the upstream bugfix for the issue (#6627).
This was likely missed during the usual upstream merge because the gc
and gccgo socket implementations have diverged quite a bit.
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/261741
Kito Cheng [Wed, 2 Sep 2020 06:26:15 +0000 (14:26 +0800)]
PR target/96759 - Handle global variable assignment from misaligned structure/PARALLEL return values.
In g:
70cdb21e579191fe9f0f1d45e328908e59c0179e, DECL/global variable has handled
misaligned stores, but it didn't handle PARALLEL values, and I refer the
other part of this function, I found the PARALLEL need handled by
emit_group_* functions, so I add a check, and using emit_group_store if
storing a PARALLEL value, also checked this change didn't break the
testcase(gcc.target/arm/unaligned-argument-3.c) added by the orginal changes.
For riscv64 target, struct S {int a; double b;} will pack into a parallel
value to return and it has TImode when misaligned access is supported,
however TImode required 16-byte align, but it only 8-byte align, so it go to
the misaligned stores handling, then it will try to generate move
instruction from a PARALLEL value.
Tested on following target without introduced new reguression:
- riscv32/riscv64 elf
- x86_64-linux
- arm-eabi
v2 changes:
- Use maybe_emit_group_store instead of emit_group_store.
- Remove push_temp_slots/pop_temp_slots, emit_group_store only require
stack temp slot when dst is CONCAT or PARALLEL, however
maybe_emit_group_store will always use REG for dst if needed.
gcc/ChangeLog:
PR target/96759
* expr.c (expand_assignment): Handle misaligned stores with PARALLEL
value.
gcc/testsuite/ChangeLog:
PR target/96759
* g++.target/riscv/pr96759.C: New.
* gcc.target/riscv/pr96759.c: New.
Clément Chigot [Wed, 7 Oct 2020 13:47:45 +0000 (15:47 +0200)]
reflect: ensure uniqueness of type descriptors on AIX.
On AIX, duplication of type descriptors can occur if one is
declared in the libgo and one in the Go program being compiled.
The AIX linker isn't able to merge them together as Linux one does.
One solution is to always load libgo first but that needs a huge mechanism in
gcc core. Thus, this patch ensures that the duplication isn't visible
for the end user.
In reflect and internal/reflectlite, the comparison of rtypes is made on their
name and not only on their addresses.
In reflect, toType() function is using a canonicalization map to force rtypes
having the same rtype.String() to return the same Type. This can't be made in
internal/reflectlite as it needs sync package. But, for now, it doesn't matter
as internal/reflectlite is not widely used.
Fixes golang/go#39276
Reviewed-on: https://go-review.googlesource.com/c/gofrontend/+/260158
GCC Administrator [Wed, 14 Oct 2020 00:16:24 +0000 (00:16 +0000)]
Daily bump.
Kwok Cheung Yeung [Wed, 7 Oct 2020 16:34:32 +0000 (09:34 -0700)]
openmp: Add support for the omp_get_supported_active_levels runtime library routine
This patch implements the omp_get_supported_active_levels runtime routine
from the OpenMP 5.0 specification, which returns the maximum number of
active nested parallel regions supported by this implementation. The
current maximum (set using the omp_set_max_active_levels routine or the
OMP_MAX_ACTIVE_LEVELS environment variable) cannot exceed this number.
2020-10-13 Kwok Cheung Yeung <kcy@codesourcery.com>
libgomp/
* env.c (gomp_max_active_levels_var): Initialize to
gomp_supported_active_levels.
(initialize_env): Limit gomp_max_active_levels_var to be at most
equal to gomp_supported_active_levels.
* fortran.c (omp_get_supported_active_levels): Add ialias_redirect.
(omp_get_supported_active_levels_): New.
* icv.c (omp_set_max_active_levels): Limit gomp_max_active_levels_var
to at most equal to gomp_supported_active_levels.
(omp_get_supported_active_levels): New.
* libgomp.h (gomp_supported_active_levels): New.
* libgomp.map (OMP_5.0.1): Add omp_get_supported_active_levels and
omp_get_supported_active_levels_.
* libgomp.texi (omp_get_supported_active_levels): New.
(omp_set_max_active_levels): Update. Add reference to
omp_get_supported_active_levels.
* omp.h.in (omp_get_supported_active_levels): New.
* omp_lib.f90.in (omp_get_supported_active_levels): New.
* omp_lib.h.in (omp_get_supported_active_levels): New.
* testsuite/libgomp.c/lib-2.c (main): Check omp_get_max_active_levels
against omp_get_supported_active_levels.
* testsuite/libgomp.fortran/lib4.f90 (lib4): Likewise.
Nuno Lopes [Tue, 13 Oct 2020 19:21:55 +0000 (20:21 +0100)]
libstdc++: Fix doxygen comment for std::any_of
libstdc++-v3/ChangeLog:
* include/bits/stl_algo.h (any_of): Fix incorrect description
in comment.
Jakub Jelinek [Tue, 13 Oct 2020 17:13:26 +0000 (19:13 +0200)]
combine: Fix up simplify_shift_const_1 for nested ROTATEs [PR97386]
The following testcases are miscompiled (the first one since my improvements
to rotate discovery on GIMPLE, the other one for many years) because
combiner optimizes nested ROTATEs with narrowing SUBREG in between (i.e.
the outer rotate is performed in shorter precision than the inner one) to
just one ROTATE of the rotated constant. While that (under certain
conditions) can work for shifts, it can't work for rotates where we can only
do that with rotates of the same precision.
2020-10-13 Jakub Jelinek <jakub@redhat.com>
PR rtl-optimization/97386
* combine.c (simplify_shift_const_1): Don't optimize nested ROTATEs if
they have different modes.
* gcc.c-torture/execute/pr97386-1.c: New test.
* gcc.c-torture/execute/pr97386-2.c: New test.
Jonathan Wakely [Tue, 13 Oct 2020 16:40:43 +0000 (17:40 +0100)]
libstdc++: Update C++20 status documentation
libstdc++-v3/ChangeLog:
* doc/xml/manual/evolution.xml: Document some API changes
and deprecations.
* doc/xml/manual/intro.xml: Document LWG 2499.
* doc/xml/manual/status_cxx2020.xml: Update status.
* doc/html/*: Regenerate.
Jonathan Wakely [Tue, 13 Oct 2020 15:43:11 +0000 (16:43 +0100)]
libstdc++: Remove trailing whitespace from XML docs
libstdc++-v3/ChangeLog:
* doc/xml/book.txml: Remove trailing whitespace.
* doc/xml/chapter.txml: Likewise.
* doc/xml/class.txml: Likewise.
* doc/xml/gnu/fdl-1.3.xml: Likewise.
* doc/xml/gnu/gpl-3.0.xml: Likewise.
* doc/xml/manual/abi.xml: Likewise.
* doc/xml/manual/algorithms.xml: Likewise.
* doc/xml/manual/allocator.xml: Likewise.
* doc/xml/manual/appendix_contributing.xml: Likewise.
* doc/xml/manual/appendix_free.xml: Likewise.
* doc/xml/manual/appendix_porting.xml: Likewise.
* doc/xml/manual/atomics.xml: Likewise.
* doc/xml/manual/auto_ptr.xml: Likewise.
* doc/xml/manual/backwards_compatibility.xml: Likewise.
* doc/xml/manual/bitmap_allocator.xml: Likewise.
* doc/xml/manual/build_hacking.xml: Likewise.
* doc/xml/manual/codecvt.xml: Likewise.
* doc/xml/manual/concurrency.xml: Likewise.
* doc/xml/manual/concurrency_extensions.xml: Likewise.
* doc/xml/manual/configure.xml: Likewise.
* doc/xml/manual/containers.xml: Likewise.
* doc/xml/manual/ctype.xml: Likewise.
* doc/xml/manual/debug.xml: Likewise.
* doc/xml/manual/debug_mode.xml: Likewise.
* doc/xml/manual/diagnostics.xml: Likewise.
* doc/xml/manual/documentation_hacking.xml: Likewise.
* doc/xml/manual/evolution.xml: Likewise.
* doc/xml/manual/internals.xml: Likewise.
* doc/xml/manual/intro.xml: Likewise.
* doc/xml/manual/io.xml: Likewise.
* doc/xml/manual/iterators.xml: Likewise.
* doc/xml/manual/locale.xml: Likewise.
* doc/xml/manual/localization.xml: Likewise.
* doc/xml/manual/messages.xml: Likewise.
* doc/xml/manual/mt_allocator.xml: Likewise.
* doc/xml/manual/numerics.xml: Likewise.
* doc/xml/manual/parallel_mode.xml: Likewise.
* doc/xml/manual/policy_data_structures.xml: Likewise.
* doc/xml/manual/prerequisites.xml: Likewise.
* doc/xml/manual/shared_ptr.xml: Likewise.
* doc/xml/manual/spine.xml: Likewise.
* doc/xml/manual/status_cxxtr1.xml: Likewise.
* doc/xml/manual/status_cxxtr24733.xml: Likewise.
* doc/xml/manual/strings.xml: Likewise.
* doc/xml/manual/support.xml: Likewise.
* doc/xml/manual/test.xml: Likewise.
* doc/xml/manual/test_policy_data_structures.xml: Likewise.
* doc/xml/manual/using.xml: Likewise.
* doc/xml/manual/using_exceptions.xml: Likewise.
* doc/xml/manual/utilities.xml: Likewise.
* doc/html/*: Regenerate.
Aldy Hernandez [Tue, 13 Oct 2020 08:40:20 +0000 (04:40 -0400)]
Do not save hash slots across calls to hash_table::get_or_insert.
There's a read of a freed block while accessing the default_slot in
calc_switch_ranges.
default_slot->intersect (def_range);
It seems the default_slot got swiped from under us, and the valgrind
dump indicates the free came from the get_or_insert in the same
function:
irange *&slot = m_edge_table->get_or_insert (e, &existed);
So it looks like the get_or_insert is actually freeing the value of
the previously allocated default_slot. Looking down the chain
from get_or_insert, we see it calls hash_table<>::expand, which
actually does a free while doing a resize of sorts:
if (!m_ggc)
Allocator <value_type> ::data_free (oentries);
else
ggc_free (oentries);
This patch avoids keeping a pointer to the default_slot across multiple
calls to get_or_insert in the loop.
gcc/ChangeLog:
PR tree-optimization/97379
* gimple-range-edge.cc (outgoing_range::calc_switch_ranges): Do
not save hash slot across calls to hash_table<>::get_or_insert.
Tobias Burnus [Tue, 13 Oct 2020 13:56:58 +0000 (15:56 +0200)]
lto-wrapper: Use nontemp filename with -save-temps
gcc/ChangeLog:
* lto-wrapper.c (find_crtoffloadtable): Fix last commit
by adding NULL as last argument to concat.
Richard Sandiford [Tue, 13 Oct 2020 13:50:24 +0000 (14:50 +0100)]
[arm] Use -Os for stack-protector-[56].c tests
Using -O2 made the tests subject to LDRD vs. LDM tuning.
The simplest fix seems to be to use -Os, so that LDM is
unequivocally a win.
gcc/testsuite/
* gcc.target/arm/stack-protector-5.c: Use -Os rather than -O2.
* gcc.target/arm/stack-protector-6.c: Likewise.
Kyrylo Tkachov [Thu, 8 Oct 2020 14:44:46 +0000 (15:44 +0100)]
AArch64: Add Neoverse N2 tuning model
This patch adds a tuning structure for Neoverse N2 to allow for further
tuning.
For now it's just a deduplication of the Neoverse N1 struct that it was
reusing but with the SVE width set to 128.
Bootstrapped and tested on aarch64-none-linux-gnu.
gcc/
* config/aarch64/aarch64.c (neoversen2_tunings): Define.
* config/aarch64/aarch64-cores.def (neoverse-n2): Use it.
Tobias Burnus [Tue, 13 Oct 2020 13:19:51 +0000 (15:19 +0200)]
lto-wrapper: Use nontemp filename with -save-temps
gcc/ChangeLog:
* lto-wrapper.c (find_crtoffloadtable): With -save-temps,
use non-temp file name utilizing the dump prefix.
(run_gcc): Update call.
Richard Biener [Tue, 13 Oct 2020 09:42:27 +0000 (11:42 +0200)]
Remove STMT_VINFO_SAME_ALIGN_REFS
This makes the only consumer of STMT_VINFO_SAME_ALIGN_REFS, the
loop peeling for alignment code, use locally computed data and
then removes STMT_VINFO_SAME_ALIGN_REFS and its computation.
It also adjusts the auto_vec<> move CTOR/assignment so you
can write
auto_vec<..> foo = bar.copy ();
and have foo own the generated copy.
2020-10-13 Richard Biener <rguenther@suse.de>
PR tree-optimization/97382
* tree-vectorizer.h (_stmt_vec_info::same_align_refs): Remove.
(STMT_VINFO_SAME_ALIGN_REFS): Likewise.
* tree-vectorizer.c (vec_info::new_stmt_vec_info): Do not
allocate STMT_VINFO_SAME_ALIGN_REFS.
(vec_info::free_stmt_vec_info): Do not release
STMT_VINFO_SAME_ALIGN_REFS.
* tree-vect-data-refs.c (vect_analyze_data_ref_dependences):
Do not compute self and read-read dependences.
(vect_dr_aligned_if_related_peeled_dr_is): New helper.
(vect_dr_aligned_if_peeled_dr_is): Likewise.
(vect_update_misalignment_for_peel): Use it instead of
iterating over STMT_VINFO_SAME_ALIGN_REFS.
(dr_align_group_sort_cmp): New function.
(vect_enhance_data_refs_alignment): Count the number of
same aligned refs here and elide uses of STMT_VINFO_SAME_ALIGN_REFS.
(vect_find_same_alignment_drs): Remove.
(vect_analyze_data_refs_alignment): Do not call it.
* vec.h (auto_vec<T, 0>::auto_vec): Adjust CTOR to take
a vec<>&&, assert it isn't using auto storage.
(auto_vec& operator=): Apply a similar change.
* gcc.dg/vect/no-vfa-vect-dv-2.c: Remove same align dump
scanning.
* gcc.dg/vect/vect-103.c: Likewise.
* gcc.dg/vect/vect-91.c: Likewise.
* gfortran.dg/vect/vect-4.f90: Likewise.
Tobias Burnus [Tue, 13 Oct 2020 09:54:26 +0000 (11:54 +0200)]
nvptx/mkoffload.c: Add missing fclose
gcc/ChangeLog:
* config/nvptx/mkoffload.c (main): Add missing fclose (in).
Martin Liska [Tue, 13 Oct 2020 08:09:47 +0000 (10:09 +0200)]
ASAN: disable -Wno-stringop-overflow for 2 tests
gcc/testsuite/ChangeLog:
PR middle-end/97392
* g++.dg/asan/asan_test.C: Disable -Wstringop-overflow.
* gcc.dg/asan/pr80166.c: Likewise.
zhengnannan [Tue, 13 Oct 2020 08:05:52 +0000 (09:05 +0100)]
AArch64: Add FLAG for mul/mla/mls intrinsics [PR94442]
2020-10-13 Zhiheng Xie <xiezhiheng@huawei.com>
Nannan Zheng <zhengnannan@huawei.com>
gcc/ChangeLog:
* config/aarch64/aarch64-simd-builtins.def: Add proper FLAG
for mul/mla/mls intrinsics.
Jakub Jelinek [Tue, 13 Oct 2020 07:30:47 +0000 (09:30 +0200)]
openmp: Improve composite triangular loop lowering and expansion
This propagates needed values from the point where number of iterations
is calculated on composite loops to the places where that information
is needed to use the more efficient square root discovery to compute
the starting iterator values from the logical iteration number.
2020-10-13 Jakub Jelinek <jakub@redhat.com>
* omp-low.c (add_taskreg_looptemp_clauses): For triangular loops
with non-constant number of iterations add another 4 _looptemp_
clauses before the (optional) one for lastprivate.
(lower_omp_for_lastprivate): Skip those clauses when looking for
the lastprivate clause.
(lower_omp_for): For triangular loops with non-constant number of
iterations add another 4 _looptemp_ clauses.
* omp-expand.c (expand_omp_for_init_counts): For triangular loops
with non-constant number of iterations set counts[0],
fd->first_inner_iterations, fd->factor and fd->adjn1 from the newly
added _looptemp_ clauses.
(expand_omp_for_init_vars): Initialize the newly added _looptemp_
clauses.
(find_lastprivate_looptemp): New function.
(expand_omp_for_static_nochunk, expand_omp_for_static_chunk,
expand_omp_taskloop_for_outer): Use it instead of manually skipping
_looptemp_ clauses.
Jan Hubicka [Tue, 13 Oct 2020 07:19:54 +0000 (09:19 +0200)]
Fix tramp3d PGO misoptimization
this patch fixes tramp3d ICE with PGO. It has turned out to be by a misupdate
in ignore_edge I introduced in previous patch that made us to not compute
SCCs correctly with -fno-lto.
While looking for problem I proofread the sources and also fortified the
srouces for situation where we insert a summary for no good reason and noticed
a problem that early ipa-modref disabled itself in some cases.
I also noticed that param_index is treamed as uhwi while it is signed (that
wastes file space).
Bootstrapping/regtesting x86_64-linux, will commit it tomorrow if that passes.
gcc/ChangeLog:
2020-10-13 Jan Hubicka <hubicka@ucw.cz>
PR ipa/97389
* ipa-modref.c (dump_lto_records): Fix formating of dump file.
(modref_summary::dump): Do not check loads to be non-null.
(modref_summary_lto::dump): Do not check loads to be non-null.
(merge_call_side_effects): Improve debug output.
(analyze_call): Crash when cur_summary->loads is NULL.
(analyze_function): Update.
(modref_summaries::insert): Insert only into summaries, not
optimization_summaries.
(modref_summaries::duplicate): Likewise; crash when load or sotres
are NULL.
(modref_summaries_lto::duplicate): Crash when loads or stores are NULL.
(write_modref_records): param_index is signed.
(read_modref_records): param_index is signed.
(modref_write): Crash when loads or stores are NULL.
(read_section): Compensate previous change.
(pass_modref::execute): Do not check optimization_summaries t be
non-NULL.
(ignore_edge): Fix.
(compute_parm_map): Fix formating.
(modref_propagate_in_scc): Do not expect loads/stores to be NULL.
GCC Administrator [Tue, 13 Oct 2020 00:16:26 +0000 (00:16 +0000)]
Daily bump.
David Malcolm [Wed, 30 Sep 2020 22:51:26 +0000 (18:51 -0400)]
analyzer: handle static callbacks [PR97258]
The analyzer's initial worklist was only populated with non-static
functions in the TU (along with those that look promising for call
summaries). Hence some static functions that were never explicitly
called but could be called via function pointers were not being
analyzed.
This patch remedies this by ensuring that functions that escape as
function pointers get added to the worklist, if they haven't been
already. Another fix would be to simply analyze all functions that
we have a body for, but too much of the testsuite relies on static
test functions not being directly analyzed.
gcc/analyzer/ChangeLog:
PR analyzer/97258
* engine.cc (impl_region_model_context::on_escaped_function): New
vfunc.
(exploded_graph::add_function_entry): Use m_functions_with_enodes
to implement idempotency.
(add_any_callbacks): New.
(exploded_graph::build_initial_worklist): Use the above to find
callbacks that are reachable from global initializers.
(exploded_graph::on_escaped_function): New.
* exploded-graph.h
(impl_region_model_context::on_escaped_function): New decl.
(exploded_graph::on_escaped_function): New decl.
(exploded_graph::m_functions_with_enodes): New field.
* region-model-reachability.cc
(reachable_regions::reachable_regions): Replace "store" param with
"model" param; use it to initialize m_model.
(reachable_regions::add): When getting the svalue for the region,
call get_store_value on the model rather than using an initial
value.
(reachable_regions::mark_escaped_clusters): Add ctxt param and
use it to call on_escaped_function when a function_region escapes.
* region-model-reachability.h
(reachable_regions::reachable_regions): Replace "store" param with
"model" param.
(reachable_regions::mark_escaped_clusters): Add ctxt param.
(reachable_regions::m_model): New field.
* region-model.cc (region_model::handle_unrecognized_call): Update
for change in reachable_regions ctor.
(region_model::handle_unrecognized_call): Pass ctxt to
mark_escaped_clusters.
(region_model::get_reachable_svalues): Update for change in
reachable_regions ctor.
(region_model::get_initial_value_for_global): Read-only variables
keep their initial values.
* region-model.h (region_model_context::on_escaped_function): New
vfunc.
(noop_region_model_context::on_escaped_function): New.
gcc/testsuite/ChangeLog:
PR analyzer/97258
* gcc.dg/analyzer/callbacks-1.c: New test.
* gcc.dg/analyzer/callbacks-2.c: New test.
* gcc.dg/analyzer/callbacks-3.c: New test.
Alexandre Oliva [Mon, 12 Oct 2020 21:55:40 +0000 (18:55 -0300)]
mathfn_built_in_type case type fix
Martin Liška reported warnings about type mismatches in the cases in
the recently-introduced mathfn_built_in_type. This patch adjusts the
macros to use the combined_fn enumerators rather than the
(currently same-numbered) built_in_function ones.
for gcc/ChangeLog
* builtins.c (mathfn_built_in_type): Use CFN_ enumerators.
Alexandre Oliva [Mon, 12 Oct 2020 21:55:37 +0000 (18:55 -0300)]
make sin and cos generics inlineable
Enable the sincos optimization within callers of these
(single-argument) elementary functions.
for gcc/ada/ChangeLog
* libgnat/a-ngelfu.ads (Sin, Cos): Make the single-argument
functions inline.
Maciej W. Rozycki [Mon, 12 Oct 2020 18:09:13 +0000 (19:09 +0100)]
MIPS/libphobos: Fix switchcontext.S assembly for MIPS I ISA
Correct MIPS I assembly build errors in switchcontext.S:
.../libphobos/libdruntime/config/mips/switchcontext.S: Assembler messages:
.../libphobos/libdruntime/config/mips/switchcontext.S:50: Error: opcode not supported on this processor: mips1 (mips1) `sdc1 $f20,(0*8-((6*8+4+(-6*8+4&7))))($sp)'
etc., due to the use of the MIPS II LDC1 and SDC1 hardware instructions
for FP register load and store operations. Instead use the L.D and S.D
generic assembly instructions, which are strict aliases for the LDC1 and
SDC1 instructions respectively and produce identical machine code where
the assembly for the MIPS II or a higher ISA has been requested, however
they become assembly macros and expand to compatible sequences of LWC1
and SWC1 hardware instructions where the assembly for the MIPS I ISA is
in effect.
libphobos/
* libdruntime/config/mips/switchcontext.S [__mips_hard_float]:
Use L.D and S.D generic assembly instructions rather than LDC1
and SDC1 MIPS II hardware instructions.
Andrew MacLeod [Mon, 12 Oct 2020 17:00:12 +0000 (13:00 -0400)]
Do not ignore failures from gimple_range_calc_op2.
We were ignoring the return value if op2 returned false and getting garbage ranges propagated.
gcc/ChangeLog:
PR tree-optimization/97381
* gimple-range-gori.cc (gori_compute::compute_operand2_range): If a range cannot be
calculated through operand 2, return false.
gcc/testsuite/ChangeLog:
* gcc.dg/pr97381.c: New test.
Patrick Palka [Mon, 12 Oct 2020 17:46:24 +0000 (13:46 -0400)]
libstdc++: Apply proposed resolution for LWG 3450
libstdc++-v3/ChangeLog:
* include/std/ranges (take_while_view::begin): Constrain the
const overload further as per LWG 3450.
(take_while_view::end): Likewise.
* testsuite/std/ranges/adaptors/take_while.cc: Add test for LWG
3450.
Patrick Palka [Mon, 12 Oct 2020 17:46:21 +0000 (13:46 -0400)]
libstdc++: Apply proposed resolution for LWG 3449 [PR95322]
Now that the frontend bug PR96805 is fixed, we can cleanly apply the
proposed resolution for this issue.
This slightly deviates from the proposed resolution by declaring _CI a
member of take_view instead of take_view::_Sentinel, since it doesn't
depend on anything within _Sentinel anymore.
libstdc++-v3/ChangeLog:
PR libstdc++/95322
* include/std/ranges (take_view::_CI): Define this alias
template as per LWG 3449 and remove ...
(take_view::_Sentinel::_CI): ... this type alias.
(take_view::_Sentinel::operator==): Adjust use of _CI
accordingly. Define a second overload that accepts an iterator
of the opposite constness as per LWG 3449.
(take_while_view::_Sentinel::operator==): Likewise.
* testsuite/std/ranges/adaptors/95322.cc: Add tests for LWG 3449.
Jonathan Wakely [Mon, 12 Oct 2020 17:14:01 +0000 (18:14 +0100)]
libstdc++: Update doxyfile to Doxygen 1.8.20 format
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in: Update to Doxygen 1.8.20 format.
Jonathan Wakely [Mon, 12 Oct 2020 17:14:01 +0000 (18:14 +0100)]
libstdc++: Include C++17 features in doxygen API docs
libstdc++-v3/ChangeLog:
* doc/doxygen/user.cfg.in (PREDEFINED): Use __cplusplus=201703L
so that C++17 features are documented.
Jonathan Wakely [Mon, 12 Oct 2020 17:14:01 +0000 (18:14 +0100)]
libstdc++: Fix documentation for return values of copy algos
The doxygen comments for these algos all incorrectly claim to use
(first - last) as the difference from the start of the output range to
the return value. As reported on the mailing list by Johannes Choo, it
should be (last - first).
libstdc++-v3/ChangeLog:
* include/bits/stl_algobase.h (copy, move, copy_backward)
(move_backward): Fix documentation for returned iterator.
Aldy Hernandez [Mon, 12 Oct 2020 14:41:21 +0000 (10:41 -0400)]
operator_trunc_mod::wi_fold: Return VARYING for mod by zero.
gcc/ChangeLog:
PR tree-optimization/97378
* range-op.cc (operator_trunc_mod::wi_fold): Return VARYING for mod by zero.
gcc/testsuite/ChangeLog:
* gcc.dg/pr97378.c: New test.
David Malcolm [Wed, 7 Oct 2020 22:34:09 +0000 (18:34 -0400)]
analyzer: add warnings about writes to constant regions [PR95007]
This patch adds two new warnings:
-Wanalyzer-write-to-const
-Wanalyzer-write-to-string-literal
for code paths where the analyzer detects a write to a constant region.
As noted in the documentation part of the patch, the analyzer doesn't
prioritize detection of such writes, in that the state-merging logic
will blithely lose the distinction between const and non-const regions.
Hence false negatives are likely to arise due to state-merging.
However, if the analyzer does happen to spot such a write, it seems worth
reporting, hence this patch.
gcc/analyzer/ChangeLog:
* analyzer.opt (Wanalyzer-write-to-const): New.
(Wanalyzer-write-to-string-literal): New.
* region-model-impl-calls.cc (region_model::impl_call_memcpy):
Call check_for_writable_region.
(region_model::impl_call_memset): Likewise.
(region_model::impl_call_strcpy): Likewise.
* region-model.cc (class write_to_const_diagnostic): New.
(class write_to_string_literal_diagnostic): New.
(region_model::check_for_writable_region): New.
(region_model::set_value): Call check_for_writable_region.
* region-model.h (region_model::check_for_writable_region): New
decl.
gcc/ChangeLog:
* doc/invoke.texi: Document -Wanalyzer-write-to-const and
-Wanalyzer-write-to-string-literal.
gcc/testsuite/ChangeLog:
PR c/83347
PR middle-end/90404
PR analyzer/95007
* gcc.dg/analyzer/write-to-const-1.c: New test.
* gcc.dg/analyzer/write-to-string-literal-1.c: New test.
Martin Sebor [Mon, 12 Oct 2020 15:35:02 +0000 (09:35 -0600)]
PR c++/97201 - ICE in -Warray-bounds writing to result of operator new(0)
gcc/cp/ChangeLog:
PR c++/97201
* error.c (dump_type_suffix): Handle both the C and C++ forms of
zero-length arrays.
libstdc++-v3/ChangeLog:
PR c++/97201
* libsupc++/new (operator new): Add attribute alloc_size and malloc.
gcc/testsuite/ChangeLog:
PR c++/97201
* g++.dg/warn/Wplacement-new-size-8.C: Adjust expected message.
* g++.dg/warn/Warray-bounds-10.C: New test.
* g++.dg/warn/Warray-bounds-11.C: New test.
* g++.dg/warn/Warray-bounds-12.C: New test.
* g++.dg/warn/Warray-bounds-13.C: New test.
Martin Sebor [Fri, 9 Oct 2020 20:48:43 +0000 (14:48 -0600)]
Generalize compute_objsize to return maximum size/offset instead of failing (PR middle-end/97023).
Also resolves:
PR middle-end/97342 - bogus -Wstringop-overflow with nonzero signed and unsigned offsets
PR middle-end/97023 - missing warning on buffer overflow in chained mempcpy
PR middle-end/96384 - bogus -Wstringop-overflow= storing into multidimensional array with index in range
gcc/ChangeLog:
PR middle-end/97342
PR middle-end/97023
PR middle-end/96384
* builtins.c (access_ref::access_ref): Initialize new member. Use
new enum.
(access_ref::size_remaining): Define new member function.
(inform_access): Handle expressions referencing objects.
(gimple_call_alloc_size): Call get_size_range instead of get_range.
(gimple_call_return_array): New function.
(get_range): Rename...
(get_offset_range): ...to this. Improve detection of ranges from
types of expressions.
(gimple_call_return_array): Adjust calls to get_range per above.
(compute_objsize): Same. Set maximum size or offset instead of
failing for unknown objects and handle more kinds of expressions.
(compute_objsize): Call access_ref::size_remaining.
(compute_objsize): Have transitional wrapper fail for pointers
into unknown objects.
(expand_builtin_strncmp): Call access_ref::size_remaining and
handle new cases.
* builtins.h (access_ref::size_remaining): Declare new member function.
(access_ref::set_max_size_range): Define new member function.
(access_ref::add_ofset, access_ref::add_max_ofset): Same.
(access_ref::add_base0): New data member.
* calls.c (get_size_range): Change argument type. Handle new
condition.
* calls.h (get_size_range): Adjust signature.
(enum size_range_flags): Define new type.
* gimple-ssa-warn-restrict.c (builtin_memref::builtin_memref): Correct
argument to get_size_range.
* tree-ssa-strlen.c (get_range): Handle anti-ranges.
(maybe_warn_overflow): Check DECL_P before assuming it's one.
gcc/testsuite/ChangeLog:
PR middle-end/97342
PR middle-end/97023
PR middle-end/96384
* c-c++-common/Wrestrict.c: Adjust comment.
* gcc.dg/Wstringop-overflow-34.c: Remove xfail.
* gcc.dg/Wstringop-overflow-43.c: Remove xfails. Adjust regex patterns.
* gcc.dg/pr51683.c: Prune out expected warning.
* gcc.target/i386/pr60693.c: Same.
* g++.dg/warn/Wplacement-new-size-8.C: New test.
* gcc.dg/Wstringop-overflow-41.c: New test.
* gcc.dg/Wstringop-overflow-44.s: New test.
* gcc.dg/Wstringop-overflow-45.c: New test.
* gcc.dg/Wstringop-overflow-46.c: New test.
* gcc.dg/Wstringop-overflow-47.c: New test.
* gcc.dg/Wstringop-overflow-49.c: New test.
* gcc.dg/Wstringop-overflow-50.c: New test.
* gcc.dg/Wstringop-overflow-51.c: New test.
* gcc.dg/Wstringop-overflow-52.c: New test.
* gcc.dg/Wstringop-overflow-53.c: New test.
* gcc.dg/Wstringop-overflow-54.c: New test.
* gcc.dg/Wstringop-overflow-55.c: New test.
* gcc.dg/Wstringop-overread-5.c: New test.
Martin Sebor [Fri, 9 Oct 2020 19:56:53 +0000 (13:56 -0600)]
Correct handling of indices into arrays with elements larger than 1 (PR c++/96511)
Resolves:
PR c++/96511 - Incorrect -Wplacement-new on POINTER_PLUS into an array with 4-byte elements
PR middle-end/96384 - bogus -Wstringop-overflow= storing into multidimensional array with index in range
gcc/ChangeLog:
PR c++/96511
PR middle-end/96384
* builtins.c (get_range): Return full range of type when neither
value nor its range is available. Fail for ranges inverted due
to the signedness of offsets.
(compute_objsize): Handle more special array members. Handle
POINTER_PLUS_EXPR and VIEW_CONVERT_EXPR that come up in front end
code.
(access_ref::offset_bounded): Define new member function.
* builtins.h (access_ref::eval): New data member.
(access_ref::offset_bounded): New member function.
(access_ref::offset_zero): New member function.
(compute_objsize): Declare a new overload.
* gimple-array-bounds.cc (array_bounds_checker::check_array_ref): Use
enum special_array_member.
* tree.c (component_ref_size): Use special_array_member.
* tree.h (special_array_member): Define a new type.
(component_ref_size): Change signature.
gcc/cp/ChangeLog:
PR c++/96511
PR middle-end/96384
* init.c (warn_placement_new_too_small): Call builtin_objsize instead
of duplicating what it does.
gcc/testsuite/ChangeLog:
PR c++/96511
PR middle-end/96384
* g++.dg/init/strlen.C: Add expected warning.
* g++.dg/warn/Wplacement-new-size-1.C: Relax warnings.
* g++.dg/warn/Wplacement-new-size-2.C: Same.
* g++.dg/warn/Wplacement-new-size-6.C: Same.
* gcc.dg/Warray-bounds-58.c: Adjust
* gcc.dg/Wstringop-overflow-37.c: Same.
* g++.dg/warn/Wplacement-new-size-7.C: New test.
Jan Hubicka [Mon, 12 Oct 2020 14:17:10 +0000 (16:17 +0200)]
Cleanup ipa-modref
this is largely mechanical patch fixing some suboptimal datastructure decision
in modref. It records three different things
1) optimization_summaries that are used by tree-ssa-alias to disambiguate
(computed by local passes or ipa execute)
2) summaries produced by local analysis and used by the ipa execute
3) summaries_lto produced by analysis when streaming is expected,
streamed, used by ipa execute
All three items are stored in "summaries" datastructure where 1 dn 2
are mixed and differentiated by "finished" flags.
This use extra memory and also makes it impossible to use modref while producing
other IPA summaries (by ipa-prop and ipa-devirt). This patch separates the
summaries into three special purpose datastructures.
There is one fix to propagation in ipa_merge_modref_summary_after_inlining
where check to ignore stores was placed incorrectly. This seems to lead
to increased clobber disambiguations:
Alias oracle query stats:
refs_may_alias_p:
64267006 disambiguations,
74475486 queries
ref_maybe_used_by_call_p: 142119 disambiguations,
65169365 queries
call_may_clobber_ref_p: 22975 disambiguations, 28762 queries
nonoverlapping_component_refs_p: 0 disambiguations, 36803 queries
nonoverlapping_refs_since_match_p: 19401 disambiguations, 55550 must overlaps, 75722 queries
aliasing_component_refs_p: 54714 disambiguations, 759027 queries
TBAA oracle:
23636760 disambiguations
56001742 queries
16112157 are in alias set 0
10614737 queries asked about the same object
125 queries asked about the same alias set
0 access volatile
3994423 are dependent in the DAG
1643540 are aritificially in conflict with void *
Modref stats:
modref use: 11667 disambiguations, 40207 queries
modref clobber:
1508990 disambiguations,
1829697 queries
3916688 tbaa queries (2.140621 per modref query)
623504 base compares (0.340769 per modref query)
PTA query stats:
pt_solution_includes: 967354 disambiguations,
13605701 queries
pt_solutions_intersect:
1032982 disambiguations,
13121107 queries
Bootstrapped/regtested x86_64-linux. I plan to commit it tomorrow if there are
no complains.
gcc/ChangeLog:
2020-10-11 Jan Hubicka <hubicka@ucw.cz>
* ipa-modref.c (modref_summaries): Remove field IPA.
(class modref_summary_lto): New global variable.
(class modref_summaries_lto): New.
(modref_summary::modref_summary): Remove loads_lto and stores_lto.
(modref_summary::~modref_summary): Remove loads_lto and stores_lto.
(modref_summary::useful_p): Do not use lto_useful.
(modref_records_lto): New typedef.
(struct modref_summary_lto): New type.
(modref_summary_lto::modref_summary_lto): New member function.
(modref_summary_lto::~modref_summary_lto): New member function.
(modref_summary_lto::useful_p): New member function.
(modref_summary::dump): Do not handle lto.
(modref_summary_lto::dump): New member function.
(get_modref_function_summary): Use optimization_summary.
(merge_call_side_effects): Use optimization_summary.
(analyze_call): Use optimization_summary.
(struct summary_ptrs): New struture.
(analyze_load): Update to handle separate lto and non-lto summaries.
(analyze_store): Likewise.
(analyze_stmt): Likewise.
(remove_summary): Break out from ...
(analyze_function): ... here; update to handle seprated summaries.
(modref_summaries::insert): Do not handle lto summary.
(modref_summaries_lto::insert): New member function.
(modref_summaries::duplicate): Do not handle lto summary.
(modref_summaries_lto::duplicate): New member function.
(read_modref_records): Expect nolto_ret or lto_ret to be NULL>
(modref_write): Write lto summary.
(read_section): Handle separated summaries.
(modref_read): Initialize separated summaries.
(modref_transform): Handle separated summaries.
(pass_modref::execute): Turn summary to optimization_summary; handle
separate summaries.
(ignore_edge): Handle separate summaries.
(ipa_merge_modref_summary_after_inlining): Likewise.
(collapse_loads): Likewise.
(modref_propagate_in_scc): Likewise.
(pass_ipa_modref::execute): Likewise.
(ipa_modref_c_finalize): Likewise.
* ipa-modref.h (modref_records_lto): Remove typedef.
(struct modref_summary): Remove stores_lto, loads_lto and finished
fields; remove lto_useful_p member function.
Christophe Lyon [Mon, 12 Oct 2020 14:04:06 +0000 (14:04 +0000)]
tree-optimization/97357: Fix testcase
Calling _setjmp causing a warning when targeting newlib.
2020-10-12 Christophe Lyon <christophe.lyon@linaro.org>
gcc/testsuite/
PR tree-optimization/97357
* gcc.dg/pr97357.c: Call setjmp instead of _setjmp.
Richard Biener [Wed, 30 Sep 2020 15:08:01 +0000 (17:08 +0200)]
optimize permutes in SLP, remove vect_attempt_slp_rearrange_stmts
This introduces a permute optimization phase for SLP which is
intended to cover the existing permute eliding for SLP reductions
plus handling commonizing the easy cases.
It currently uses graphds to compute a postorder on the reverse
SLP graph and it handles all cases vect_attempt_slp_rearrange_stmts
did (hopefully - I've adjusted most testcases that triggered it
a few days ago). It restricts itself to move around bijective
permutations to simplify things for now, mainly around constant nodes.
As a prerequesite it makes the SLP graph cyclic (ugh). It looks
like it would pay off to compute a PRE/POST order visit array
once and elide all the recursive SLP graph walks and their
visited hash-set. At least for the time where we do not change
the SLP graph during such walk.
I do not like using graphds too much but at least I don't have to
re-implement yet another RPO walk, so maybe it isn't too bad.
It now computes permute placement during iteration and thus should
get cycles more obviously correct.
Richard.
2020-10-06 Richard Biener <rguenther@suse.de>
* tree-vect-data-refs.c (vect_slp_analyze_instance_dependence):
Use SLP_TREE_REPRESENTATIVE.
* tree-vectorizer.h (_slp_tree::vertex): New member used
for graphds interfacing.
* tree-vect-slp.c (vect_build_slp_tree_2): Allocate space
for PHI SLP children.
(vect_analyze_slp_backedges): New function filling in SLP
node children for PHIs that correspond to backedge values.
(vect_analyze_slp): Call vect_analyze_slp_backedges for the
graph.
(vect_slp_analyze_node_operations): Deal with a cyclic graph.
(vect_schedule_slp_instance): Likewise.
(vect_schedule_slp): Likewise.
(slp_copy_subtree): Remove.
(vect_slp_rearrange_stmts): Likewise.
(vect_attempt_slp_rearrange_stmts): Likewise.
(vect_slp_build_vertices): New functions.
(vect_slp_permute): Likewise.
(vect_slp_perms_eq): Likewise.
(vect_optimize_slp): Remove special code to elide
permutations with SLP reductions. Implement generic
permute optimization.
* gcc.dg/vect/bb-slp-50.c: New testcase.
* gcc.dg/vect/bb-slp-51.c: Likewise.
Christophe Lyon [Mon, 12 Oct 2020 13:28:20 +0000 (13:28 +0000)]
arm: Use E_FOOmode instead of FOOmode in arm_preferred_simd_mode
gcc-4.8.5 does not accept case clauses with non-literal type, which
happens for "QImode" as it expands to (scalar_int_mode
((scalar_int_mode::from_int) E_QImode)).
Use E_QImode instead in arm_preferred_simd_mode, to fix the
build. Same for HImode, SImode, HFmode and SFmode as introduced by a
recent patch.
2020-10-12 Christophe Lyon <christophe.lyon@linaro.org>
gcc/
* config/arm/arm.c (arm_preferred_simd_mode): Use E_FOOmode
instead of FOOmode.
Martin Liska [Mon, 12 Oct 2020 10:54:31 +0000 (12:54 +0200)]
SLP: fix SVE issues
The patch fixes the following 2 issues:
.MASK_STORE_LANES (&a, 4B, max_mask_34, vect_array.12);
here we miss to return the last argument as stored value.
ivtmp_32 = ivtmp_31 + POLY_INT_CST [4, 4];
here we miss a bail out in vect_recog_over_widening_pattern.
gcc/ChangeLog:
PR tree-optimization/97079
* internal-fn.c (internal_fn_stored_value_index): Handle also
.MASK_STORE_LANES.
* tree-vect-patterns.c (vect_recog_over_widening_pattern): Bail
out for unsupported TREE_TYPE.
gcc/testsuite/ChangeLog:
PR tree-optimization/97079
* gcc.target/aarch64/sve/pr97079.c: New test.
Richard Biener [Mon, 12 Oct 2020 12:29:35 +0000 (14:29 +0200)]
fix SLP subgraph detection wrt fully shared lanes
When a VEC_PERM SLP node just permutes existing lanes this confuses
the SLP subgraph detection where I tried to elide a node-based
visited hash-map in a way that doesn't work. Fixed by adding such.
2020-10-12 Richard Biener <rguenther@suse.de>
* tree-vect-slp.c (vect_bb_partition_graph_r): Use visited
hash-map.
(vect_bb_partition_graph): Likewise.
Duan bo [Mon, 12 Oct 2020 11:32:57 +0000 (12:32 +0100)]
vect: Fix an ICE in vect_recog_mask_conversion_pattern
When processing the cond expression, vect_recog_mask_conversion_pattern
doesn't consider the situation that two operands of rhs1 are different
vectypes, leading to a vect ICE. This patch adds the identification and
handling of the situation to fix the problem.
gcc/ChangeLog:
PR target/96757
* tree-vect-patterns.c (vect_recog_mask_conversion_pattern): Add
the identification and handling of the dropped situation in the
cond expression processing phase.
gcc/testsuite/ChangeLog:
PR target/96757
* gcc.target/aarch64/pr96757.c: New test.
Tobias Burnus [Mon, 12 Oct 2020 11:13:20 +0000 (13:13 +0200)]
nvptx - invoke.texi: Update default of -misa
Followup to commit
383400a6078d75bbfa1216c9af2c37f7e88740c9
gcc/ChangeLog
* doc/invoke.texi (nvptx's -misa): Update default to sm_35.
Kyrylo Tkachov [Fri, 9 Oct 2020 09:34:15 +0000 (10:34 +0100)]
PR target/97349 AArch64: Incorrect types for some Neon vdupq_n_<...> intrinsics
This patch fixes the PR by adjusting the input types of the intrinsic
prototypes to the ones mandated by ACLE
Turns out the tests in the testsuite were already using the correct
ones, but implicit conversions hid the bug...
Bootstrapped and tested on aarch64-none-linux-gnu.
gcc/
PR target/97349
* config/aarch64/arm_neon.h (vdupq_n_p8, vdupq_n_p16,
vdupq_n_p64, vdupq_n_s8, vdupq_n_s16, vdupq_n_u8, vdupq_n_u16):
Fix argument type.
gcc/testsuite/
PR target/97349
* gcc.target/aarch64/simd/pr97349.c: New test.
Ilya Leoshkevich [Wed, 7 Oct 2020 14:51:21 +0000 (16:51 +0200)]
IBM Z: Change vector copysign to use bitwise operations
The vector copysign pattern incorrectly assumes that vector
if_then_else operates on bits, not on elements. This can theoretically
mislead the optimizers. Fix by changing it to use bitwise operations,
like commit
2930bb321794 ("PR94613: Fix vec_sel builtin for IBM Z") did
for vec_sel builtin.
gcc/ChangeLog:
2020-10-07 Ilya Leoshkevich <iii@linux.ibm.com>
* config/s390/s390-protos.h (s390_build_signbit_mask): New
function.
* config/s390/s390.c (s390_contiguous_bitmask_vector_p):
Bitcast the argument to an integral mode.
(s390_expand_vec_init): Do not call
s390_contiguous_bitmask_vector_p with a scalar argument.
(s390_build_signbit_mask): New function.
* config/s390/vector.md (copysign<mode>3): Use bitwise
operations.
Iain Buclaw [Mon, 12 Oct 2020 08:11:44 +0000 (10:11 +0200)]
libphobos: Override tool_timeout value in testsuite
Some of the larger tests in the phobos testsuite on occasion trigger the
default timeout limit. Increasing the limit to 10 minutes should give
compilation enough time to finish.
libphobos/ChangeLog:
* testsuite/lib/libphobos.exp: Define tool_timeout, set to 600.
Iain Buclaw [Sun, 11 Oct 2020 20:20:43 +0000 (22:20 +0200)]
d: Merge upstream dmd
70aabfb51
Fixes a symbol resolver bug where a private alias becomes public if used
before its declaration.
Reviewed-on: https://github.com/dlang/dmd/pull/11831
gcc/d/ChangeLog:
* dmd/MERGE: Merge upstream dmd
70aabfb51
Iain Buclaw [Sun, 11 Oct 2020 20:27:00 +0000 (22:27 +0200)]
d: Merge upstream dmd
3a9790525
Fixes the return codes to match the documentation of
Target::isVectorTypeSupported.
Reviewed-on: https://github.com/dlang/dmd/pull/11830
gcc/d/ChangeLog:
* dmd/MERGE: Merge upstream dmd
3a9790525
* d-target.cc (Target::isVectorTypeSupported): Adjust return codes for
invalid size and invalid base type.
Aldy Hernandez [Mon, 12 Oct 2020 08:08:28 +0000 (04:08 -0400)]
Ignore shifts larger than precision in operator_rshift::op1_range.
gcc/ChangeLog:
PR tree-optimization/97371
* range-op.cc (operator_rshift::op1_range): Ignore shifts larger than
or equal to type precision.
gcc/testsuite/ChangeLog:
* gcc.dg/pr97371.c: New test.
Martin Liska [Mon, 12 Oct 2020 08:13:46 +0000 (10:13 +0200)]
IPA: prevent an UBSAN error
Prevents the following UBSAN error:
./xgcc -B. /home/marxin/Programming/gcc/gcc/testsuite/g++.dg/torture/pr49770.C -O2 -c
/home/marxin/Programming/gcc2/gcc/ipa-modref-tree.h:482:22: runtime error: load of value 2, which is not a valid value for type 'bool'
#0 0x1fdb4d1 in modref_tree<int>::merge(modref_tree<int>*, vec<modref_parm_map, va_heap, vl_ptr>*) /home/marxin/Programming/gcc2/gcc/ipa-modref-tree.h:482
#1 0x1fcadaa in merge_call_side_effects(modref_summary*, gimple*, modref_summary*, bool) /home/marxin/Programming/gcc2/gcc/ipa-modref.c:511
#2 0x1fcbadd in analyze_call /home/marxin/Programming/gcc2/gcc/ipa-modref.c:642
#3 0x1fcc061 in analyze_stmt /home/marxin/Programming/gcc2/gcc/ipa-modref.c:732
#4 0x1fccf31 in analyze_function /home/marxin/Programming/gcc2/gcc/ipa-modref.c:823
#5 0x1fd17e5 in execute /home/marxin/Programming/gcc2/gcc/ipa-modref.c:1441
#6 0x25cca6e in execute_one_pass(opt_pass*) /home/marxin/Programming/gcc2/gcc/passes.c:2509
#7 0x25cd39b in execute_pass_list_1 /home/marxin/Programming/gcc2/gcc/passes.c:2597
#8 0x25cd450 in execute_pass_list_1 /home/marxin/Programming/gcc2/gcc/passes.c:2598
#9 0x25cd4ee in execute_pass_list(function*, opt_pass*) /home/marxin/Programming/gcc2/gcc/passes.c:2608
#10 0x25c7a5a in do_per_function_toporder(void (*)(function*, void*), void*) /home/marxin/Programming/gcc2/gcc/passes.c:1726
#11 0x25cfa3f in execute_ipa_pass_list(opt_pass*) /home/marxin/Programming/gcc2/gcc/passes.c:2941
#12 0x173572d in ipa_passes /home/marxin/Programming/gcc2/gcc/cgraphunit.c:2642
#13 0x17364ee in symbol_table::compile() /home/marxin/Programming/gcc2/gcc/cgraphunit.c:2777
#14 0x17372d9 in symbol_table::finalize_compilation_unit() /home/marxin/Programming/gcc2/gcc/cgraphunit.c:3022
#15 0x2a1f00a in compile_file /home/marxin/Programming/gcc2/gcc/toplev.c:485
#16 0x2a27dc8 in do_compile /home/marxin/Programming/gcc2/gcc/toplev.c:2321
#17 0x2a283cc in toplev::main(int, char**) /home/marxin/Programming/gcc2/gcc/toplev.c:2460
#18 0x54f21cd in main /home/marxin/Programming/gcc2/gcc/main.c:39
#19 0x7ffff6f0de09 in __libc_start_main ../csu/libc-start.c:314
#20 0x9eac09 in _start (/home/marxin/Programming/gcc2/objdir/gcc/cc1plus+0x9eac09)
gcc/ChangeLog:
* ipa-modref.c (merge_call_side_effects): Clear modref_parm_map
fields in the vector.
Richard Biener [Mon, 12 Oct 2020 07:31:16 +0000 (09:31 +0200)]
More consistently split SLP groups
This appropriately makes matches all true after successful SLP discovery
to reliably succeed splitting. We were picking up an eventual all
false built-up from scalars state in some cases.
2020-10-12 Richard Biener <rguenther@suse.de>
* tree-vect-slp.c (vect_analyze_slp_instance): Set matches to true
after successful discovery but forced split.
Tom de Vries [Mon, 12 Oct 2020 08:14:13 +0000 (10:14 +0200)]
[nvptx] Fix -msoft-stack-reserve-local format
Currently, in order to use the switch -msoft-stack-reserve-local with the
default arg 128, you have to specify '-msoft-stack-reserve-local128'.
Fix the switch format such that you specify '-msoft-stack-reserve-local=128'
instead.
Tested on nvptx.
gcc/ChangeLog:
2020-10-12 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.opt (-msoft-stack-reserve-local): Rename to ...
(-msoft-stack-reserve-local=): ... this.
Richard Biener [Mon, 12 Oct 2020 06:51:05 +0000 (08:51 +0200)]
tree-optimization/97357 - avoid abnormals in loop splitting conditions
This avoids abnormals in another place.
2020-10-12 Richard Biener <rguenther@suse.de>
PR tree-optimization/97357
* tree-ssa-loop-split.c (ssa_semi_invariant_p): Abnormal
SSA names are not semi invariant.
* gcc.dg/pr97357.c: New testcase.
Mark Eggleston [Thu, 1 Oct 2020 10:14:09 +0000 (11:14 +0100)]
Fortran : ICE in gfc_validate_kind PR96099
Only check for kind if the type supports kind.
2020-10-12 Mark Eggleston <markeggleston@gcc.gnu.org>
gcc/fortran/ChangeLog:
PR fortran/96099
* decl.c (gfc_match_implicit): Check for numeric and logical
types.
2020-10-12 Mark Eggleston <markeggleston@gcc.gnu.org>
gcc/testsuite/ChangeLog:
PR fortran/96099
* gfortran.dg/pr96099_1.f90: New test.
* gfortran.dg/pr96099_2.f90: New test.
GCC Administrator [Mon, 12 Oct 2020 00:16:25 +0000 (00:16 +0000)]
Daily bump.
Alexandre Oliva [Sun, 11 Oct 2020 23:27:27 +0000 (20:27 -0300)]
import elementary functions as intrinsics
Importing them as intrinsics enables GCC to treat them as builtins
whose behavior is known by GCC.
Specifically, if they aren't intrinsics, calls to Sin and Cos won't be
combined into sincos.
We still need to make Sin and Cos wrappers inline in user-exposed
interfaces to get users the benefit of this transformation.
That is forthcoming in a separate patch.
for gcc/ada/ChangeLog
* libgnat/a-numaux.ads: Make all imports Intrinsic.
* libgnat/a-numaux__darwin.ads: Likewise.
* libgnat/a-numaux__libc-x86.ads: Likewise.
* libgnat/a-numaux__vxworks.ads: Likewise.
Clément Chigot [Tue, 1 Sep 2020 09:32:09 +0000 (11:32 +0200)]
aix: remove libgomp and libatomic archives before creating FAT archives
AIX caches shared objects in archives with read-other permission.
libgomp and libatomic might be in use during the build or testing, which
may cause archiver operations on them to fail. This patch adjusts the
Makefile fragments to delete the library archives before creating fresh
archives containing both the 32 bit and 64 bit shared objects.
libatomic/ChangeLog:
2020-10-11 Clement Chigot <clement.chigot@atos.net>
* config/t-aix: Delete and recreate libatomic before creating
FAT library.
libgomp/ChangeLog:
2020-10-11 Clement Chigot <clement.chigot@atos.net>
* config/t-aix: Delete and recreate libgomp before creating
FAT library.
Iain Sandoe [Sat, 3 Oct 2020 19:49:53 +0000 (20:49 +0100)]
Objective-C, Darwin : Make protocols private extern and weak.
Newer linkers want protocols to be private-extern and weak.
This is conditional on the runtime version.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c
(create_global_decl): Update to allow the caller to
specify declaration or definition.
(create_hidden_decl): Likewise.
(next_runtime_abi_02_protocol_decl): Make the symbol
weak and hidden for later OS runtime versions.
(build_v2_protocol_list_address_table): Likewise.
Iain Sandoe [Sun, 11 Oct 2020 14:36:13 +0000 (15:36 +0100)]
libobjc, Darwin : Fix powerpc encoding regression.
This corrects a typo in the recipe for the special type alignment
rules that are used for 32bit powerpc Darwin platforms.
libobjc/ChangeLog:
* encoding.c (_darwin_rs6000_special_round_type_align):
Use DFMode in the emulation of the special round type.
Iain Sandoe [Sat, 10 Oct 2020 10:14:47 +0000 (11:14 +0100)]
Objective-C++ : Fix bitfield ivars.
This fixes a regression present from 8.x; It used to be OK
to test for a DECL_INITIAL value to flag that an ivar was a
bitfield (the initial value was the width). This still works
on C / Objective-C, but no longer on C++. Replace the test
with DECL_C_BIT_FIELD() which is set for both C and C++.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c (objc_v2_build_ivar_ref): Test
DECL_C_BIT_FIELD to detect that an ivar is a bitfield.
Iain Sandoe [Wed, 7 Oct 2020 18:41:45 +0000 (19:41 +0100)]
testsuite, Objective-c++ : Update diagnostic plugin test.
The @selector() and @protocol() operators produce var decls
these do not work with the example plugin. Unfortunatetely,
unlike the ObjC front end, it is not so easy to construct a
substitute expression that works reliably. Where it does not
work we xfail for now.
gcc/testsuite/ChangeLog:
* obj-c++.dg/plugin/diagnostic-test-expressions-1.mm:
Adjust testcase to include expressions for @selector and
@protocol. XFAIL where this is still not sufficient to obtain
a disgnostic range.
Iain Sandoe [Wed, 7 Oct 2020 15:24:14 +0000 (16:24 +0100)]
testsuite, objective-c++ : Add a dummy retain/release to testuite object.
On newer systems, the throw/catch process sends retain and release
messages to thrown objects. While these are not needed in the testsuite
cases, they cause the tests to fail because the selector is not handled.
Add dummy methods to the testsuite object.
gcc/testsuite/ChangeLog:
* objc-obj-c++-shared/TestsuiteObject.h: Add dummy retain and
release method declarations.
* objc-obj-c++-shared/TestsuiteObject.m: Add dummy retain and
release implementations.
Iain Sandoe [Wed, 7 Oct 2020 15:21:52 +0000 (16:21 +0100)]
testsuite, objective-c++ : GC is not available from Darwin16.
Update the dg-skip to cover newer systems.
gcc/testsuite/ChangeLog:
* obj-c++.dg/objc-gc-3.mm:i Skip for Darwin >= 16.
Clément Chigot [Tue, 1 Sep 2020 09:07:16 +0000 (11:07 +0200)]
aix: add FAT library support for libstdc++fs.a
Make libstdc++fs.a a 32/64 bit FAT library.
It is too complicated for the FAT library Makefile fragment to determine if
--enable-libstdcxx-filesystem-ts has been enabled. This patch checks the
existence of libstdc++fs.a at build time and adds the complementary object
file if it was built.
libstdc++-v3/Changelog:
2020-10-11 Clement Chigot <clement.chigot@atos.net>
* config/os/aix/t-aix: Add complementary mode object file to
libstdc++fs.a
Iain Sandoe [Wed, 7 Oct 2020 15:20:48 +0000 (16:20 +0100)]
testsuite, Objective-C++ : Skip an ancient test on newer systems.
This test contains elements incompatible with modern Objective-C
headers, it is only of relevance to Darwin8 or potentially on systems
with SDKs that could target Darwin8, so skip it on newer systems.
gcc/testsuite/ChangeLog:
* obj-c++.dg/cxx-ivars-3.mm: Skip for macOS >= 10.7.
Iain Sandoe [Wed, 7 Oct 2020 15:19:09 +0000 (16:19 +0100)]
testsuite, Objective-c++ : Fix GNU API tests to work with NeXT where possible.
The version 2 GNU Objective C API is mostly compatible with the NeXT one.
However, there are a few testsuite tweaks needed (and one test fails for NeXT
without considerable increase in complexity).
gcc/testsuite/ChangeLog:
* obj-c++.dg/gnu-api-2-class-meta.mm: Add a flag to cause NeXT
headers to expose prototypes for messaging.
* obj-c++.dg/gnu-api-2-class.mm: Likewise.
* obj-c++.dg/gnu-api-2-objc.mm: Skip this because of the extra
protocols pulled in by system headers.
Iain Sandoe [Wed, 7 Oct 2020 08:12:36 +0000 (09:12 +0100)]
testsuite, Objective-C : Fix two plugin diagnostics tests for Darwin.
The @selector and @protocol keywords produce a var decl without
useful location information. The current diagnostics plugin does not
look at VAR_DECLs (and it would not be helpful if it did in this
case, since a single decl is shared across all the users).
However, ee can, in this case, make expressions that produce useful
information.
gcc/testsuite/ChangeLog:
* objc.dg/plugin/diagnostic-test-expressions-1.m: Use assignment
expressions for @selector and @protocol to obtain a useful
diagnostic range.
Iain Sandoe [Thu, 8 Oct 2020 07:00:08 +0000 (08:00 +0100)]
testsuite, Objective-C : Fix call-super-2.m for newer NeXT headers.
We were using a callout to runtime.h which, eventually brings in the system
runtime.h. One newer versions of the Darwin/NeXT headers this declares the
objc_getClass() function as returning Class, rather than the internal
representation of that. This breaks a fragile assumption in objc-act that
the use of these internal functions can be deduced by looking at the function
type. Ultimately, the fragility should be fixed - but this fixes up the test
so that it only uses the compiler's forward declaration of the function.
gcc/testsuite/ChangeLog:
* objc.dg/call-super-2.m: Remove inclusion of runtime.h.
Add a FIXME about the test portability.
Iain Sandoe [Tue, 6 Oct 2020 20:30:17 +0000 (21:30 +0100)]
testsuite, Objective-C : Update forward-1.m.
Newer versions of the runtime / NSObject don't respond to forward:.
This uses the replacement.
gcc/testsuite/ChangeLog:
* objc.dg/torture/forward-1.m: Implement forwarding using the
native NeXT (NSInvocation) method for Darwin.
Iain Sandoe [Mon, 5 Oct 2020 10:38:12 +0000 (11:38 +0100)]
testsuite, Objective-C : Add initialize method to root class.
Older versions of the runtime don't like it when the root class
has a missing initialize method. They try to forward to an non-
existent super class resulting in a crash.
TODO: maybe we can diagnose this.
gcc/testsuite/ChangeLog:
* objc.dg/ivar-scope-4.m: Add inititialize method to the
root class.
Iain Sandoe [Mon, 5 Oct 2020 10:36:36 +0000 (11:36 +0100)]
testsuite, Objective-C : Adjust gnu-api tests for Darwin.
The GNU v2 API matches the next v2 API in most respects.
However, some of the tests depend on access to items that the
later NeXT headers consider to be 'internal implementation details'
and are not exposed (we arrange that with a DEFINE).
One test is skipped here because, although it works internally, the
number of objects returned is larger for the NeXT runtime in some
cases (where the headers have been updated to bring in more of the
system details).
gcc/testsuite/ChangeLog:
* objc.dg/gnu-api-2-class-meta.m: Add a flag to cause NeXT
headers to expose prototypes for messaging. Mark the root
class if the objc_root_class attribute is available. Use
char ** as the second arg to main.
* objc.dg/gnu-api-2-class.m: Use dispatch prototype.
* objc.dg/gnu-api-2-objc.m: Skip on NeXT because of extra
prototypes pulled in by headers.
Iain Sandoe [Sat, 3 Oct 2020 23:05:17 +0000 (00:05 +0100)]
testsuite, Objective-C : Update a test for newer OS versions.
Objective-C GC is not available for any recent Darwin version, nor
is it available for the upcoming release of Darwin20.
gcc/testsuite/ChangeLog:
* objc.dg/objc-gc-4.m: Disable for macOS 10.15 and 11.x.
Iain Sandoe [Sat, 3 Oct 2020 23:03:54 +0000 (00:03 +0100)]
testsuite, Objective-C : Compatibility fixes.
Changes to deal with warnings and/or errors seen when compiling the
tests with clang.
gcc/testsuite/ChangeLog:
* objc-obj-c++-shared/TestsuiteObject.h: If the compiler
supports objc_root_object attributes, then mark the testsuite
object accordingly.
* objc-obj-c++-shared/TestsuiteObject.m: Avoid direct access
to isa, which is an error for modern Objective-C.
* objc/execute/class-tests-1.h: Declare a string function we
use locally (avoid pulling in the whole of string.h).
Iain Sandoe [Sun, 4 Oct 2020 09:09:57 +0000 (10:09 +0100)]
Darwin, Objective-C : Adjust objective-c symbol linkage with version.
Earlier linkers cannot handle publicly-visible (or linker-visible)
metadata, so we need to make the output of these conditional on version.
gcc/ChangeLog:
* config/darwin.c (darwin_globalize_label): Make a subset of
metadate symbols global.
(darwin_label_is_anonymous_local_objc_name): Make a subset of
metadata symbols linker-visible.
(darwin_override_options): Track more target OS versions, make
the next_runtime version track this (unless it's set to 0 for
GNU runtime).
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c (FIXUP_NEEDED): Rename ...
(USE_FIXUP_BEFORE): ... to this.
(next_runtime_02_initialize): Likewise.
(next_runtime_abi_02_get_arg_type_list_base): Likewise.
(next_runtime_abi_02_build_objc_method_call): Likewise.
Iain Sandoe [Sat, 3 Oct 2020 13:34:27 +0000 (14:34 +0100)]
Darwin, Objective-C : Update meta-data linkage.
Newer versions of ld64 require that some meta-data symbols are
global, and that a larger set are linker-visible.
gcc/ChangeLog:
* config/darwin.c (darwin_globalize_label): Add protocol
meta-data labels to the set that are global.
(darwin_label_is_anonymous_local_objc_name): Arrange for meta-
data start labels to be linker-visible.
Iain Sandoe [Tue, 29 Sep 2020 18:16:12 +0000 (19:16 +0100)]
Objective-C, Darwin : Update message call codegen.
Platform compilers based on LLVM do not use the objc_sendMsg_fixit
and friends for newer editions of the OS (runtimes for Arm64 do not even
have those entries).
We need to arrange to allow for this codegen on modern Darwin.
The _fixit versions are needed for some OS versions (at least, up to
10.6) since the super2 call is not implemented there. It does not
seem worth making the codegen more fine-grained at present.
Other parts of the codegen need to be made conditional on either the
runtime version or the linker capabilities.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c (TAG_MSGSENDSUPER): Revised
spelling.
(TAG_MSGSENDID): Likewise.
(TAG_MSGSENDSUPER_STRET): Likewise.
(TAG_MSGSENDID_STRET): Likewise.
(FIXUP_NEEDED): Likewise.
(TAG_FIXUP): New.
(next_runtime_02_initialize): Adjust message calls to use
fixup variants only when required.
(next_runtime_abi_02_get_arg_type_list_base): Correct
indent.
(build_v2_build_objc_method_call): New.
(build_v2_objc_method_fixup_call): Split out from ...
(next_runtime_abi_02_build_objc_method_call): ... here.
Arrange to adjust the call on the basis of the target
runtime.
Iain Sandoe [Fri, 9 Oct 2020 14:17:34 +0000 (15:17 +0100)]
Objective-C, Darwin : Revise the runtime selection options.
For the NeXT/Darwin runtime as installed on macOS, we now
need to deal with changes in ABI and APIs over the range
of system versions supported.
For the first phase of these changes, we will make the
existing flag_next_runtime carry a value that represents
the target OS version. It might be necessary to extend the
value to represent the ABI ('fragile', V1/V2) or the linker
capabilities (some changes to the linker-visible and public
symbols are dependent on linker version).
TODO: arrange to set the default NEXT_OBJC_RUNTIME on the
basis of the configured target version.
gcc/ChangeLog:
* config/darwin.c (darwin_objc2_section): Allow for
values > 1 to represent the next runtime.
(darwin_objc1_section): Likewise.
* config/darwin.h (NEXT_OBJC_RUNTIME): Set the default
next runtime value to be 10.5.8.
Iain Sandoe [Tue, 6 Oct 2020 17:50:22 +0000 (18:50 +0100)]
Objective-C++, Darwin : Make metadata 'extern "C"'.
For current system toolchains NeXT runtime metadata symbols are not
mangled for Objective-C++ (i.e. they are considered to be
'extern "C"').
This change becomes essential when we start to emit metadata refs
as hidden and weak which is required by later editions of the runtime
and linkers.
gcc/objc/ChangeLog:
* objc-runtime-shared-support.c (start_var_decl): Make the
decl_assembler_name follow the metadata name for C++ on NeXT
runtime platforms.
Iain Sandoe [Sat, 10 Oct 2020 21:21:05 +0000 (22:21 +0100)]
Ojective-C, Darwin : Adjust category superclass ref names (NFC).
Make the order of the class and superclass match the metadata
order from clang. Makes it easier to compare produced meta-
data between implementations.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c
(next_runtime_abi_02_category_decl): Adjust category
superclass name ordering.
Iain Sandoe [Sat, 3 Oct 2020 13:41:23 +0000 (14:41 +0100)]
Objective-C, Darwin : Update protocol metadata to current version.
Later versions of the NeXT runtime protocol metadata contain additional
fields. This patch adds these fields and populates a new list of
method types.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c (build_v2_super_template): Add new
fields to the template.
(build_v2_protocol_template): Build new field entries.
(generate_v2_meth_descriptor_table): Adjust to allow recording all
method types.
(generate_v2_meth_type_list): New.
(build_v2_protocol_initializer): Initialize the additional fields.
(generate_v2_protocols): Record method types for all entries and
generate the additional method type table.
GCC Administrator [Sun, 11 Oct 2020 00:16:25 +0000 (00:16 +0000)]
Daily bump.
Jan Hubicka [Sat, 10 Oct 2020 22:07:11 +0000 (00:07 +0200)]
Fix parameter map computation in ipa-modref
* ipa-modref.c (modref_transform): Fix parameter map computation.
Tom de Vries [Sat, 10 Oct 2020 15:22:01 +0000 (17:22 +0200)]
[nvptx] Replace dots in function names
When function splitting clones a function sinf in the host compiler, the clone
is callled sinf.part.0. However, ptx does not allows dots in identifiers, so
we run into:
...
ptxas test.o, line 23; fatal : Parsing error near '.part': syntax error
ptxas fatal : Ptx assembly aborted due to errors
nvptx-as: ptxas returned 255 exit status
...
Rename such functions by replacing the dots with dollar signs.
Tested check-gcc on nvptx.
Tested libgomp on x86_64-linux with nvptx accelerator.
gcc/ChangeLog:
2020-10-10 Tom de Vries <tdevries@suse.de>
PR target/97318
* config/nvptx/nvptx.c (nvptx_replace_dot): New function.
(write_fn_proto, write_fn_proto_from_insn, nvptx_output_call_insn):
Use nvptx_replace_dot.
Tom de Vries [Sat, 10 Oct 2020 15:08:04 +0000 (17:08 +0200)]
[nvptx] Factor out write_fn_proto_1
Factor out write_fn_proto_1 from write_fn_proto.
Tested check-gcc on nvptx.
Tested libgomp on x86_64-linux with nvptx accelerator.
gcc/ChangeLog:
2020-10-10 Tom de Vries <tdevries@suse.de>
* config/nvptx/nvptx.c (write_fn_proto_1): New function, factored out
of ...
(write_fn_proto): ... here. Return void.
Jonathan Wakely [Sat, 10 Oct 2020 20:22:12 +0000 (21:22 +0100)]
libstdc++: Replace use of reserved name that clashes [PR 97362]
The name __deref is defined as a macro by Windows headers.
This renames the __deref() helper function to __ref. It doesn't actually
dereference an iterator. it just has the same type as the iterator's
reference type.
libstdc++-v3/ChangeLog:
PR libstdc++/97362
* doc/html/manual/source_code_style.html: Regenerate.
* doc/xml/manual/appendix_contributing.xml: Add __deref to
BADNAMES.
* include/debug/functions.h (_Irreflexive_checker::__deref):
Rename to __ref.
* testsuite/17_intro/badnames.cc: Check __deref.
Jan Hubicka [Sat, 10 Oct 2020 20:16:59 +0000 (22:16 +0200)]
Fix ICE in remap_arguments with removed parameters.
* ipa-modref.c (remap_arguments): Check range in map access.
Jan Hubicka [Sat, 10 Oct 2020 20:01:17 +0000 (22:01 +0200)]
Fix modref_transform ICE with more than 32 parameters.
* ipa-modref.c (modref_transform): Use reserve instead of safe_grow.
Jan Hubicka [Sat, 10 Oct 2020 19:22:52 +0000 (21:22 +0200)]
Fix ipa-modref ICE with not allocated summaries.
* ipa-modref.c (modref_transform): Check that summaries are allocated.
Jan Hubicka [Sat, 10 Oct 2020 18:55:37 +0000 (20:55 +0200)]
Fix modref handling of parameter adjustments and jump functions.
* ipa-modref-tree.h (struct modref_tree): Revert prevoius change.
* ipa-modref.c (analyze_function): Dump original summary.
(modref_read): Only set IPA if streaming summary (not optimization
summary).
(remap_arguments): New function.
(modref_transform): New function.
(compute_parm_map): Fix offset calculation.
(ipa_merge_modref_summary_after_inlining): Do not merge stores when
they can be ignored.
Jan Hubicka [Sat, 10 Oct 2020 17:36:03 +0000 (19:36 +0200)]
Improve tree-ssa-alias dump files.
* tree-ssa-alias.c (ref_maybe_used_by_call_p_1): Improve debug dumps.
(call_may_clobber_ref_p_1): Improve debug dumps.
Iain Sandoe [Tue, 6 Oct 2020 17:47:26 +0000 (18:47 +0100)]
Objective-C, Darwin : Pick up super refs directly.
The current code assumed that super refs could be computed
indirectly, i.e. that the metadata generated by the compiler
was immutable by the runtime. This does not always hold
(it depends on the NeXT runtime version). So, compute super
refs directly.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c
(objc_get_superclass_ref_decl): Split this code out.
(next_runtime_abi_02_get_class_super_ref): Compute
super refs using the objc_get_superclass_ref_decl().
(next_runtime_abi_02_get_category_super_ref): Likewise.
Iain Sandoe [Sat, 3 Oct 2020 12:51:29 +0000 (13:51 +0100)]
Darwin : Only emit Objective-C section switches for older linkers.
At one time, the system linkers needed to have at least a dummy
entry for every Objective-C section in use. This removes the extra
emitted code when it is not needed by the linker.
gcc/ChangeLog:
* config/darwin.c (output_objc_section_asm_op): Avoid extra
objective-c section switches unless the linker needs them.
Iain Sandoe [Sat, 3 Oct 2020 12:40:03 +0000 (13:40 +0100)]
Objective-C, Darwin : Update metadata section uses.
Newer versions of ld64 are more picky about adherence to placement
rules for objective c metadata. This adds protocol refs and uses
the ivar refs for all targets.
gcc/ChangeLog:
* config/darwin-sections.def (objc2_data_section): New.
(objc2_ivar_section): New.
* config/darwin.c (darwin_objc2_section): Act on Protocol and
ivar refs.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c
(next_runtime_abi_02_init_metadata_attributes): Make protocol
refs a distinct section.
Iain Sandoe [Sat, 26 Sep 2020 09:15:28 +0000 (10:15 +0100)]
Objective-C, Darwin : Use special string sections for V2 NeXT runtime.
Newer versions of the runtime expect to find strings for class, method
and method types in set-aside sections rather than the general c_strings
one.
gcc/ChangeLog:
* config/darwin-sections.def (objc2_class_names_section,
objc2_method_names_section, objc2_method_types_section): New
* config/darwin.c (output_objc_section_asm_op): Output new
sections. (darwin_objc2_section): Select new sections where
used.
gcc/objc/ChangeLog:
* objc-next-runtime-abi-02.c
(next_runtime_abi_02_init_metadata_attributes): Attach metadata
for the special string sections to class, method and method type
string sections.
Iain Sandoe [Thu, 1 Oct 2020 09:58:58 +0000 (10:58 +0100)]
Objective-C: Addess a FIXME (NFC).
This removes references to the next runtime from the gnu runtime
implementation.
gcc/objc/ChangeLog:
* objc-gnu-runtime-abi-01.c
(build_shared_structure_initializer): Remove references to
the NeXT runtime.
(generate_static_references): Likewise.
Iain Sandoe [Sat, 22 Aug 2020 16:40:20 +0000 (17:40 +0100)]
Darwin : Begin rework of zero-fill sections.
Much of the existing work in the Darwin BSS and common sections
was to accommodate the PowerPC section anchors. We want to segregate
this, since it might become desirable to support section anchors for
arm64.
First revision (here) is to use the same section conventions as the Xcode
toochains for BSS and COMMON.
We also drop the constraint about putting small items into data/static data
that was a work-around for Java issues (irrelevant for several editions).
gcc/ChangeLog:
* config/darwin.c (darwin_emit_local_bss): Amend section names to
match system tools. (darwin_output_aligned_bss): Likewise.
gcc/testsuite/ChangeLog:
* gcc.dg/darwin-sections.c: Adjust test for renamed BSS and common
sections. Cater for 64 and 128 bit long doubles.
H.J. Lu [Fri, 9 Oct 2020 13:12:17 +0000 (06:12 -0700)]
x86-64: Check CMPXCHG16B for x86-64-v[234]
x86-64-v2 includes CMPXCHG16B. Since -mcx16 enables CMPXCHG16B and
defines __GCC_HAVE_SYNC_COMPARE_AND_SWAP_16, check it in x86-64-v[234]
tests.
PR target/97250
* gcc.target/i386/x86-64-v2.c: Verify that
__GCC_HAVE_SYNC_COMPARE_AND_SWAP_16 is defined.
* gcc.target/i386/x86-64-v3.c: Likewise.
* gcc.target/i386/x86-64-v4.c: Likewise.
Ville Voutilainen [Sat, 10 Oct 2020 10:57:17 +0000 (13:57 +0300)]
libstdc++: Fix variant build on 32-bit targets [PR95904]
libstdc++-v3/ChangeLog:
* include/std/variant (__check_visitor_result):
Use size_t for indexes.
(__check_visitor_results): Likewise.