Jonathan Wakely [Thu, 12 Sep 2019 10:51:58 +0000 (11:51 +0100)]
PR libstdc++/91748 fix std::for_each_n for random access iterators
PR libstdc++/91748
* include/bits/stl_algo.h (for_each_n): Fix random access iterator
case.
* testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
access iterators.
Eric Botcazou [Wed, 11 Sep 2019 10:42:31 +0000 (10:42 +0000)]
re PR rtl-optimization/89795 (wrong code with -O2 -fno-dce -fno-forward-propagate -fno-sched-pressure)
PR rtl-optimization/89795
* rtlanal.c (nonzero_bits1) <SUBREG>: Do not propagate results from
inner REGs to paradoxical SUBREGs if WORD_REGISTER_OPERATIONS is set.
Ian Lance Taylor [Tue, 10 Sep 2019 20:26:11 +0000 (20:26 +0000)]
go/internal/gccgoimporter: support embedded field in pointer loop
Backport of https://golang.org/cl/194440. Original description:
If an embedded field refers to a type via a pointer, the parser needs
to know the name of the embedded field. It is possible that the
pointer type is not yet resolved. This CL fixes the parser to handle
that case by setting the pointer element type to the unresolved named
type while the pointer is being resolved.
Jakub Jelinek [Mon, 9 Sep 2019 10:51:04 +0000 (12:51 +0200)]
re PR target/91704 ([X86] Codegen for _mm256_cmpgt_epi8 is affected by -funsigned-char)
PR target/91704
* config/i386/avxintrin.h (__v32qs): New typedef.
* config/i386/avx2intrin.h (_mm256_cmpgt_epi8): Use casts to __v32qs
instead of __v32qi.
PR81800 is about the lrint inline giving spurious FE_INEXACT exceptions.
The previous change for PR81800 didn't fix this: when lrint is disabled
in the backend, the midend will simply use llrint. This actually makes
things worse since llrint now also ignores FE_INVALID exceptions!
The fix is to disable lrint/llrint on double if the size of a long is
smaller (ie. ilp32).
gcc/
PR target/81800
* gcc/config/aarch64/aarch64.md (lrint): Disable lrint pattern if GPF
operand is larger than a long int.
testsuite/
PR target/81800
* gcc.target/aarch64/no-inline-lrint_3.c: New test.
Jakub Jelinek [Tue, 3 Sep 2019 16:55:31 +0000 (18:55 +0200)]
re PR tree-optimization/91597 (GCC miscompiles a branch depending on a pointer tag)
PR tree-optimization/91597
* tree-vrp.c (extract_range_from_binary_expr): Remove unsafe
BIT_AND_EXPR optimization for pointers, even if both operand
ranges don't include NULL, the result can be NULL.
Martin Liska [Mon, 2 Sep 2019 08:58:39 +0000 (10:58 +0200)]
Backport r275292
2019-09-02 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-09-02 Martin Liska <mliska@suse.cz>
PR c++/91155
* c-common.c (fname_as_string): Use cxx_printable_name for
__PRETTY_FUNCTION__ same as was used before r265711.
2019-09-02 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-09-02 Martin Liska <mliska@suse.cz>
PR c++/91155
* g++.dg/torture/pr91155.C: New test.
Martin Liska [Mon, 2 Sep 2019 08:58:17 +0000 (10:58 +0200)]
Backport r275291
2019-09-02 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-09-02 Martin Liska <mliska@suse.cz>
PR gcov-profile/91601
* gcov.c (path_contains_zero_cycle_arc): Rename to ...
(path_contains_zero_or_negative_cycle_arc): ... this and handle
also negative edges.
(circuit): Handle also negative edges as they can happen
in some situations.
Eric Botcazou [Sun, 1 Sep 2019 12:57:56 +0000 (12:57 +0000)]
re PR target/91472 (gmp testsuite segfaults with gcc-8 and gcc-9, works fine with gcc-7)
PR target/91472
* config/sparc/sparc.c (sparc_cannot_force_const_mem): Return true
during LRA/reload in PIC mode if the PIC register hasn't been used yet.
(sparc_pic_register_p): Test reload_in_progress for consistency's sake.
Iain Sandoe [Sat, 31 Aug 2019 19:12:10 +0000 (19:12 +0000)]
[c-family] Backport fix for PCH / PR61250.
When we are parsing a source file, the very first token might
be a PRAGMA_GCC_PCH_PREPROCESS. This indicates that we are going
read in a PCH file (named as the value of the pragma). If we don't
see this pragma, then we know that it's OK to release any resources
that the host might have set aside for the PCH file.
There is a thinko in the current implementation, in that the decision
to release resources is happening unconditionally right after the first
token is extracted but before it's been checked or acted upon.
This leads to the pch bug on Darwin, because we actually do release
resources - which are subsequently (reasonably) assumed to be available
when reading a PCH file. We then get random crashes or hangs depending
on the interaction between unmmap and malloc.
The bug is present everywhere but doesn't show on (say) Linux, since
the release of PCH resources is a NOP there.
This effects all the c-family front ends, because they all use
c_lex_with_flags () to implement this.
The solution is to check for the PRAGMA_GCC_PCH_PREPROCESS and only call
c_common_no_more_pch () when that is not the first token.
A secondary effect of the collection is that the name of the PCH file
can be collected during the ggc_pch_read() reset of state. Therefore
we should issue any diagnostic that might name the file before the
collections are triggered.
gcc/
2019-08-31 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline
2019-08-23 Iain Sandoe <iain@sandoe.co.uk>
PR pch/61250
* ggc-page.c (ggc_pch_read): Read the ggc_pch_ondisk structure
and issue any diagnostics needed before collecting the pre-PCH
state.
gcc/c-family/
2019-08-31 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline
2019-08-23 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline.
2019-08-23 Iain Sandoe <iain@sandoe.co.uk>
PR pch/61250
* c-parser.c (c_parse_file): Call c_common_no_more_pch ()
after determining that the first token is not
PRAGMA_GCC_PCH_PREPROCESS.
gcc/cp/
2019-08-31 Iain Sandoe <iain@sandoe.co.uk>
Backported from mainline
2019-08-23 Iain Sandoe <iain@sandoe.co.uk>
PR pch/61250
* parser.c (cp_parser_initial_pragma): Call c_common_no_more_pch ()
after determining that the first token is not
PRAGMA_GCC_PCH_PREPROCESS.
Backport from trunk
2019-08-22 Segher Boessenkool <segher@kernel.crashing.org>
PR target/91481
* config/rs6000/rs6000.md (unspec): Delete UNSPEC_DARN, UNSPEC_DARN_32,
and UNSPEC_DARN_RAW.
(unspecv): New enumerator values UNSPECV_DARN, UNSPECV_DARN_32, and
UNSPECV_DARN_RAW.
(darn_32): Use an unspec_volatile, and UNSPECV_DARN_32.
(darn_raw): Use an unspec_volatile, and UNSPECV_DARN_RAW.
(darn): Use an unspec_volatile, and UNSPECV_DARN.
Richard Biener [Thu, 29 Aug 2019 08:12:57 +0000 (08:12 +0000)]
re PR tree-optimization/91568 (internal compiler error: in vect_schedule_slp_instance, at tree-vect-slp.c:3922)
2019-08-29 Richard Biener <rguenther@suse.de>
PR tree-optimization/91568
* tree-vectorizer.h (_slp_tree::max_nunits): Add.
(vect_update_max_nunits): Add overload for poly_uint64.
* tree-vect-slp.c (vect_create_new_slp_node): Initialize it.
(vect_build_slp_tree): Record max_nunits into the subtree
and merge it upwards.
(vect_print_slp_tree): Print max_nunits.
Uros Bizjak [Sun, 25 Aug 2019 18:21:04 +0000 (20:21 +0200)]
re PR target/91533 (abs pattern generates MMX instructions but fails to call EMMS)
PR target/91533
Backport from mainline
2019-06-30 Uroš Bizjak <ubizjak@gmail.com>
* config/i386/sse.md (ssse3_abs<mode>2): Rename from abs<mode>2.
* config/i386/i386-builtin.def (__builtin_ia32_pabsb):
Use CODE_FOR_ssse3_absv8qi2.
(__builtin_ia32_pabsw): Use CODE_FOR_ssse3_absv4hi2.
(__builtin_ia32_pabsd): Use CODE_FOR_ssse3_absv2si2.
Joseph Myers [Fri, 23 Aug 2019 21:05:50 +0000 (22:05 +0100)]
Fix libstdc++ lstat missing return type for Windows target.
Building for i686-mingw32 target (with some local changes) produced an
error
error: ISO C++ forbids declaration of 'lstat' with no type [-fpermissive]
in libstdc++-v3/src/filesystem/ops-common.h. This patch adds the
missing return type. OK to commit (trunk and GCC 9 branch)?
Note 1: I haven't run the testsuite with this patch, but it fixes the
build failure I see (in sources with other local changes).
Note 2: I don't know why this hasn't produced build failures for other
people, but the missing return type looks wrong in any case even if
other local changes are for some reason needed for it to produce an
error.
Martin Liska [Fri, 23 Aug 2019 11:41:16 +0000 (13:41 +0200)]
Backport r274502
2019-08-23 Martin Liska <mliska@suse.cz>
Backport from mainline
2019-08-15 Martin Liska <mliska@suse.cz>
PR ipa/91404
* passes.c (order): Remove.
(uid_hash_t): Likewise).
(remove_cgraph_node_from_order): Remove from set
of pointers (cgraph_node *).
(insert_cgraph_node_to_order): New.
(duplicate_cgraph_node_to_order): New.
(do_per_function_toporder): Register all 3 cgraph hooks.
Skip removed_nodes now as we know about all of them.
Jonathan Wakely [Tue, 20 Aug 2019 21:03:11 +0000 (22:03 +0100)]
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++.
Backported for PR libstdc++/91495, replacing the use of
std::__size_to_integer which is not present on the branch.
Backport from mainline
2019-06-19 Jonathan Wakely <jwakely@redhat.com>
* 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.
Backport from mainline
2019-06-18 Jonathan Wakely <jwakely@redhat.com>
* 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.
Richard Earnshaw [Mon, 19 Aug 2019 16:11:30 +0000 (16:11 +0000)]
[aarch64] PR target/91386 Use copy_rtx to avoid modifying original insns in peep2 pattern
PR target/91386 is a situation where a peephole2 pattern substitution
is discarded late because the selected instructions contain
frame-related notes that we cannot redistribute (because the pattern
has more than one insn in the output). Unfortunately, the original
insns were being modified during the generation, so after the undo we
are left with corrupt RTL.
We avoid this by ensuring that the modifications are always made on a
copy, so that the original insns are never changed.
Backport from mainline
2019-09-09 Richard Earnshaw <rearnsha@arm.com>
PR target/91386
* config/aarch64/aarch64.c (aarch64_gen_adjusted_ldpstp): Use copy_rtx
to preserve the contents of the original insns.
Iain Sandoe [Sun, 18 Aug 2019 19:11:29 +0000 (19:11 +0000)]
Darwin, libsanitizer - remove reference to __cxa_rethrow_primary_exception.
For some Darwin versions the absence of the rethrow_primary_exception
symbol causes almost all sanitizer tests to fail.
The symbol is not present in libstdc++ and, therefore is is correct to
remove the reference to it for all platforms. We do this by adding a
new guard "ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION".
For the backported version, to avoid bumping the library version, this
is only applied for Darwin (because of the way that symbol interposing
works on Darwin, this does not alter the exported symbols list).
libsanitizer/
2019-08-18 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline
2019-06-18 Iain Sandoe <iain@sandoe.co.uk>
PR libsanitizer/87880
* asan/asan_interceptors.h:
(ASAN_INTERCEPT___CXA_RETHROW_PRIMARY_EXCEPTION): New.
* asan/Makefile.am (DEFS): Add (for Darwin only)
ASAN_HAS_CXA_RETHROW_PRIMARY_EXCEPTION, defined to 0.
* asan/Makefile.in: Regenerated.
Steven G. Kargl [Sat, 17 Aug 2019 18:16:51 +0000 (18:16 +0000)]
re PR fortran/91471 (f951: internal compiler error: gfc_variable_attr(): Bad array reference)
2019-08-17 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91471
* primary.c (gfc_variable_attr): Remove a gfc_internal_error(),
which cannot be reached by conforming Fortran code, but seems to
be reachable from nonconforming Fortran code. Treat the AR_UNKNOWN
case as a no-op.
2019-08-17 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91471
* gfortran.dg/pr91471.f90: New test.
Steven G. Kargl [Sat, 17 Aug 2019 18:14:26 +0000 (18:14 +0000)]
re PR fortran/78739 (ICE in gfc_get_symbol_decl, at fortran/trans-decl.c:1477)
2019-08-17 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/78739
* match.c (gfc_match_st_function): When matching a statement function,
need to check if the statement function name shadows the function
name.
2019-08-17 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/78739
* fortran.dg/pr78739.f90: New test.
Jason Merrill [Sat, 17 Aug 2019 01:34:00 +0000 (21:34 -0400)]
PR c++/90393 - ICE with throw in ?:
I fixed the DR 1560 implementation properly for GCC 10, but for GCC 9 feel
that it's better not to change the meaning of well-formed code. Reverting
the incomplete implementation fixes the ICEs.
* call.c (build_conditional_expr_1): Revert changes from
PR c++/64372 and c++/86205.
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