Oleg Endo [Tue, 1 Oct 2019 14:58:10 +0000 (14:58 +0000)]
backport: re PR c++/88562 (Incorrect pointer incrementing on SH4)
gcc/
2019-10-01 Oleg Endo <olegendo@gcc.gnu.org>
Backport from mainline
2019-10-01 Oleg Endo <olegendo@gcc.gnu.org>
PR target/88562
* config/sh/sh.c (sh_extending_set_of_reg::use_as_extended_reg): Use
sh_check_add_incdec_notes to preserve REG_INC notes when replacing
a memory access insn.
Eric Botcazou [Mon, 23 Sep 2019 08:08:45 +0000 (08:08 +0000)]
trans.c (Attribute_to_gnu): Test Can_Use_Internal_Rep on the underlying type of the node.
* gcc-interface/trans.c (Attribute_to_gnu): Test Can_Use_Internal_Rep
on the underlying type of the node.
(Call_to_gnu): Likewise with the type of the prefix.
Max Filippov [Mon, 23 Sep 2019 07:47:14 +0000 (07:47 +0000)]
xtensa: backport fix for 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
gcc/
2019-09-23 Max Filippov <jcmvbkbc@gmail.com>
Backport from mainline
2019-06-18 Max Filippov <jcmvbkbc@gmail.com>
* 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.
[Darwin, opts processing] Fix missing RejectNegative etc.
This adds RejectNegative in a number of places it was needed,
reorders the opts into two groups (one general and one driver-only).
We also add a minimal description to each opt, and note some that
are now obsolete. The only functional change is to permit
-mtarget-linker= as an alias of -mtarget-linker.
This fixes the Darwin part of PR89327
2019-09-22 Iain Sandoe <iain@sandoe.co.uk>
Backport from mainline
2019-06-16 Iain Sandoe <iain@sandoe.co.uk>
Paul Thomas [Sat, 21 Sep 2019 08:35:17 +0000 (08:35 +0000)]
backport: re PR fortran/91588 (ICE in check_inquiry, at fortran/expr.c:2673)
2019-09-21 Paul Thomas <pault@gcc.gnu.org>
Backport from mainline
PR fortran/91588
* expr.c (check_inquiry): Remove extended component refs by
using symbol pointers. If a function argument is an associate
variable with a constant target, copy the target expression in
place of the argument expression. Check that the charlen is not
NULL before using the string length.
2019-09-21 Paul Thomas <pault@gcc.gnu.org>
Backport from mainline
PR fortran/91588
* gfortran.dg/associate_49.f90 : New test.
Kito Cheng [Fri, 20 Sep 2019 10:41:51 +0000 (10:41 +0000)]
RISC-V: Fix more splitters accidentally calling gen_reg_rtx.
PR target/91683
* config/riscv/riscv-protos.h (riscv_split_symbol): New bool parameter.
(riscv_move_integer): Likewise.
* config/riscv/riscv.c (riscv_split_integer): Pass FALSE for new
riscv_move_integer arg.
(riscv_legitimize_move): Likewise.
(riscv_force_temporary): New parameter in_splitter. Don't call
force_reg if true.
(riscv_unspec_offset_high): Pass FALSE for new riscv_force_temporary
arg.
(riscv_add_offset): Likewise.
(riscv_split_symbol): New parameter in_splitter. Pass to
riscv_force_temporary.
(riscv_legitimize_address): Pass FALSE for new riscv_split_symbol
arg.
(riscv_move_integer): New parameter in_splitter. New local
can_create_psuedo. Don't call riscv_split_integer or force_reg when
in_splitter TRUE.
(riscv_legitimize_const_move): Pass FALSE for new riscv_move_integer,
riscv_split_symbol, and riscv_force_temporary args.
* config/riscv/riscv.md (low<mode>+1): Pass TRUE for new
riscv_move_integer arg.
(low<mode>+2): Pass TRUE for new riscv_split_symbol arg.
Steven G. Kargl [Thu, 19 Sep 2019 17:54:53 +0000 (17:54 +0000)]
re PR fortran/91727 (ICE in conformable_arrays, at fortran/resolve.c:7490)
2019-09-19 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91727
* resolve.c (conformable_arrays): If array-spec is NULL, then
allocate-object is a scalar. a conformability check only occurs
for an array source-expr.
2019-09-19 Steven G. Kargl <kargl@gcc.gnu.org>
PR fortran/91727
* gfortran.dg/pr91727.f90: New test.
Kito Cheng [Thu, 19 Sep 2019 06:38:23 +0000 (06:38 +0000)]
RISC-V: Fix bad insn splits with paradoxical subregs.
Shifting by more than the size of a SUBREG_REG doesn't work, so we either
need to disable splits if an input is paradoxical, or else we need to
generate a clean temporary for intermediate results.
Jakub wrote the first version of this patch, so gets primary credit for it.
gcc/
PR target/91635
* config/riscv/riscv.md (zero_extendsidi2, zero_extendhi<GPR:mode>2,
extend<SHORT:mode><SUPERQI:mode>2): Don't split if
paradoxical_subreg_p (operands[0]).
(*lshrsi3_zero_extend_3+1, *lshrsi3_zero_extend_3+2): Add clobber and
use as intermediate value.
gcc/testsuite/
PR target/91635
* gcc.c-torture/execute/pr91635.c: New test.
* gcc.target/riscv/shift-shift-4.c: New test.
* gcc.target/riscv/shift-shift-5.c: New test.
Thomas Koenig [Wed, 18 Sep 2019 17:32:08 +0000 (17:32 +0000)]
backport: re PR fortran/91550 (ICE in do_subscript, at fortran/frontend-passes.c:2652)
2019-09-18 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/91550
* frontend-passes.c (do_subscript): If step equals
zero, a previuos error has been reported; do nothing
in this case.
* resolve.c (gfc_resolve_iterator): Move error checking
after type conversion.
2019-09-18 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/91550
* gfortran.dg/do_subscript_6.f90: New test.
Thomas Koenig [Sun, 15 Sep 2019 19:48:41 +0000 (19:48 +0000)]
backport: re PR fortran/91557 (Bogus warning about unused dummy argument _formal_*)
2019-09-15 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/91557
* trans-decl.c (generate_local_decl): Do not warn if the symbol
is artificial.
* trans-types.c (get_formal_from_actual_arglist): Set artificial
attribute on dummy arguments.
2019-09-15 Thomas Koenig <tkoenig@gcc.gnu.org>
Backport from trunk
PR fortran/91557
* gfortran.dg/warn_unused_dummy_argument_5.f90: New test.
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.
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