Commit Graph

183382 Commits

Author SHA1 Message Date
Jonathan Wright
9d66505a5d aarch64: Use RTL builtins for integer mla_n intrinsics
Rewrite integer mla_n Neon intrinsics to use RTL builtins rather than
inline assembly code, allowing for better scheduling and
optimization.

gcc/ChangeLog:

2021-01-15  Jonathan Wright  <jonathan.wright@arm.com>

	* config/aarch64/aarch64-simd-builtins.def: Add mla_n builtin
	generator macro.
	* config/aarch64/aarch64-simd.md (*aarch64_mla_elt_merge<mode>):
	Rename to...
	(aarch64_mla_n<mode>): This.
	* config/aarch64/arm_neon.h (vmla_n_s16): Use RTL builtin
	instead of asm.
	(vmla_n_s32): Likewise.
	(vmla_n_u16): Likewise.
	(vmla_n_u32): Likewise.
	(vmlaq_n_s16): Likewise.
	(vmlaq_n_s32): Likewise.
	(vmlaq_n_u16): Likewise.
	(vmlaq_n_u32): Likewise.
2021-01-27 12:44:49 +00:00
Paul Fee
f004d6d9fa libstdc++: Add string contains member functions for C++2b
This implements WG21 P1679R3, adding contains member functions to
basic_string_view and basic_string.

libstdc++-v3/ChangeLog:

	* include/bits/basic_string.h (basic_string::contains): New
	member functions.
	* include/std/string_view (basic_string_view::contains):
	Likewise.
	* include/std/version (__cpp_lib_string_contains): Define.
	* testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
	Remove trailing whitespace.
	* testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
	Likewise.
	* testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
	* testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
	* testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
	* testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
	* testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
2021-01-27 12:37:36 +00:00
Paul Thomas
4225af228b Fortran: Fix ICE due to elemental procedure pointers [PR93924/5].
2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

gcc/fortran
	PR fortran/93924
	PR fortran/93925
	* trans-expr.c (gfc_conv_procedure_call): Suppress the call to
	gfc_conv_intrinsic_to_class for unlimited polymorphic procedure
	pointers.
	(gfc_trans_assignment_1): Similarly suppress class assignment
	for class valued procedure pointers.

gcc/testsuite/
	PR fortran/93924
	PR fortran/93925
	* gfortran.dg/proc_ptr_52.f90 : New test.
2021-01-27 11:34:27 +00:00
Jakub Jelinek
686b1cdfdc libgcc, i386: Add .note.GNU-stack sections to the ms sse/avx sav/res
On Linux, GCC emits .note.GNU-stack sections when compiling code to mark
the code as not needing or needing executable stack, missing section means
unknown.  But assembly files need to be marked manually.  We already
mark various *.S files in libgcc manually, but the
avx_resms64f.o
avx_resms64fx.o
avx_resms64.o
avx_resms64x.o
avx_savms64f.o
avx_savms64.o
sse_resms64f.o
sse_resms64fx.o
sse_resms64.o
sse_resms64x.o
sse_savms64f.o
sse_savms64.o
files aren't marked, so when something links it in, it will require
executable stack.  Nothing in the assembly requires executable stack though.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

	* config/i386/savms64.h: Add .note.GNU-stack section on Linux.
	* config/i386/savms64f.h: Likewise.
	* config/i386/resms64.h: Likewise.
	* config/i386/resms64f.h: Likewise.
	* config/i386/resms64x.h: Likewise.
	* config/i386/resms64fx.h: Likewise.
2021-01-27 11:50:13 +01:00
liuhongt
530b1d6887 Fix ICE for [PR target/98833].
And replace __builtin_ia32_pcmpeqb128 with operator == in libcpp.

gcc/ChangeLog:

	PR target/98833
	* config/i386/sse.md (sse2_gt<mode>3): Drop !TARGET_XOP in condition.
	(*sse2_eq<mode>3): Ditto.

gcc/testsuite/ChangeLog:

	PR target/98833
	* gcc.target/i386/pr98833.c: New test.

libcpp/

	PR target/98833
	* lex.c (search_line_sse2): Replace builtins with == operator.
2021-01-27 18:49:25 +08:00
Jakub Jelinek
6cf4343375 testsuite: Fix TBAA in {sse,avx}*and*p[sd]*.c tests
This patch drops the no-strict-aliasing hack in m128-check.h and instead
ensures the tests read objects with the right dynamic type.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

	* gcc.target/i386/m128-check.h (CHECK_EXP): Remove
	optimize ("no-strict-aliasing") attribute.
	* gcc.target/i386/sse-andnps-1.c (TEST): Copy e into float[4]
	array to avoid violating TBAA.
	* gcc.target/i386/sse2-andpd-1.c (TEST): Copy e.d into double[2]
	array to avoid violating TBAA.
	* gcc.target/i386/sse-andps-1.c (TEST): Copy e.f into float[4]
	array to avoid violating TBAA.
	* gcc.target/i386/sse2-andnpd-1.c (TEST): Copy e into double[2]
	array to avoid violating TBAA.
2021-01-27 10:22:18 +01:00
Paul Thomas
003f041429 Fortran: Fix ICE due to elemental procedure pointers [PR98472].
2021-01-27  Paul Thomas  <pault@gcc.gnu.org>

gcc/fortran
	PR fortran/98472
	* trans-array.c (gfc_conv_expr_descriptor): Include elemental
	procedure pointers in the assert under the comment 'elemental
	function' and eliminate the second, spurious assert.

gcc/testsuite/
	PR fortran/98472
	* gfortran.dg/elemental_function_5.f90 : New test.
2021-01-27 09:12:54 +00:00
Jakub Jelinek
da5c25f371 Rename PROP_trees to PROP_gimple
PROP_trees actually means GIMPLE IL, rather than GENERIC, so better
not to confuse users.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

	* tree-pass.h (PROP_trees): Rename to ...
	(PROP_gimple): ... this.
	* cfgexpand.c (pass_data_expand): Replace PROP_trees with PROP_gimple.
	* passes.c (execute_function_dump, execute_function_todo,
	execute_one_ipa_transform_pass, execute_one_pass): Likewise.
	* varpool.c (ctor_for_folding): Likewise.
2021-01-27 10:10:04 +01:00
Jakub Jelinek
efc9ccbfd0 varpool: Restore GENERIC TREE_READONLY automatic var optimization [PR7260]
In 4.8 and earlier we used to fold the following to 0 during GENERIC folding,
but we don't do that anymore because ctor_for_folding etc. has been turned into a
GIMPLE centric API, but as the testcase shows, it is invoked even during
GENERIC folding and there the automatic vars still should have meaningful
initializers.  I've verified that the C++ FE drops TREE_READONLY on
automatic vars with const qualified types if they require non-constant
(runtime) initialization.

2021-01-27  Jakub Jelinek  <jakub@redhat.com>

	PR tree-optimization/97260
	* varpool.c: Include tree-pass.h.
	(ctor_for_folding): In GENERIC return DECL_INITIAL for TREE_READONLY
	non-TREE_SIDE_EFFECTS automatic variables.

	* gcc.dg/tree-ssa/pr97260.c: New test.
2021-01-27 10:08:46 +01:00
GCC Administrator
e62bb7f083 Daily bump. 2021-01-27 00:16:33 +00:00
Paul Fee
78739c2df7 c++: Add support for -std=c++23
Derived from the changes that added C++2a support in 2017.
r8-3237-g026a79f70cf33f836ea5275eda72d4870a3041e5

No C++23 features are added here.
Use of -std=c++23 sets __cplusplus to 202100L.

$ g++ -std=c++23 -dM -E -x c++ - < /dev/null | grep cplusplus
 #define __cplusplus 202100L

gcc/
	* doc/cpp.texi (__cplusplus): Document value for -std=c++23
	or -std=gnu++23.
	* doc/invoke.texi: Document -std=c++23 and -std=gnu++23.
	* dwarf2out.c (highest_c_language): Recognise C++20 and C++23.
	(gen_compile_unit_die): Recognise C++23.

gcc/c-family/
	* c-common.h (cxx_dialect): Add cxx23 as a dialect.
	* c.opt: Add options for -std=c++23, std=c++2b, -std=gnu++23
	and -std=gnu++2b
	* c-opts.c (set_std_cxx23): New.
	(c_common_handle_option): Set options when -std=c++23 is enabled.
	(c_common_post_options): Adjust comments.
	(set_std_cxx20): Likewise.

gcc/testsuite/
	* lib/target-supports.exp (check_effective_target_c++2a):
	Check for C++2a or C++23.
	(check_effective_target_c++20_down): New.
	(check_effective_target_c++23_only): New.
	(check_effective_target_c++23): New.
	* g++.dg/cpp23/cplusplus.C: New.

libcpp/
	* include/cpplib.h (c_lang): Add CXX23 and GNUCXX23.
	* init.c (lang_defaults): Add rows for CXX23 and GNUCXX23.
	(cpp_init_builtins): Set __cplusplus to 202100L for C++23.
2021-01-26 17:11:34 -05:00
Jason Merrill
96253f069e c++: Invisible refs are not restrict [PR97474]
In this testcase, we refer to the a parameter through a reference in its own
member, which we asserted couldn't happen by marking the parameter as
'restrict'.  This assumption could also be broken if the address escapes
from the constructor.

gcc/cp/ChangeLog:

	PR c++/97474
	* call.c (type_passed_as): Don't mark invisiref restrict.

gcc/testsuite/ChangeLog:

	PR c++/97474
	* g++.dg/torture/pr97474.C: New test.
2021-01-26 17:10:58 -05:00
Jason Merrill
a4dfd0f089 c++: constexpr and empty fields [PR97566]
In the discussion of PR98463, Jakub pointed out that in C++17 and up,
cxx_fold_indirect_ref_1 could use the field we build for an empty base.  I
tried implementing that, but it broke one of the tuple tests, so I did some
more digging.

To start with, I generalized the PR98463 patch to handle the case where we
do have a field, for an empty base or [[no_unique_address]] member.  This is
enough also for the no-field case because the member of the empty base must
itself be an empty field; if it weren't, the base would not be empty.

I looked for related PRs and found 97566, which was also fixed by the patch.
After some poking around to figure out why, I noticed that the testcase had
been breaking because E, though an empty class, has an ABI nvsize of one
byte, and we were giving the [[no_unique_address]] FIELD_DECL that
DECL_SIZE, whereas in build_base_field_1 empty base fields always get
DECL_SIZE zero, and various places were relying on that to recognize empty
fields.  So I adjusted both the size and the checking.  When I adjusted
check_bases I wondered if we were correctly handling bases with only empty
data members, but it appears we do.

I'm deferring the cxx_fold_indirect_ref_1 change until stage 1, as I don't
think it actually fixes anything.

gcc/cp/ChangeLog:

	PR c++/97566
	PR c++/98463
	* class.c (layout_class_type): An empty field gets size 0.
	(is_empty_field): New.
	(check_bases): Check it.
	* cp-tree.h (is_empty_field): Declare it.
	* constexpr.c (cxx_eval_store_expression): Check it.
	(cx_check_missing_mem_inits): Likewise.
	* init.c (perform_member_init): Likewise.
	* typeck2.c (process_init_constructor_record): Likewise.

gcc/testsuite/ChangeLog:

	PR c++/97566
	* g++.dg/cpp2a/no_unique_address10.C: New test.
	* g++.dg/cpp2a/no_unique_address9.C: New test.
2021-01-26 15:00:38 -05:00
Jakub Jelinek
e80f1f6b7a testsuite: Fix TBAA in sse*and*p[sd]*.c tests
This patch drops the no-strict-aliasing hack in m128-check.h and instead
ensures the tests read objects with the right dynamic type.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

	* gcc.target/powerpc/m128-check.h (CHECK_EXP): Remove
	optimize ("no-strict-aliasing") attribute.
	* gcc.target/powerpc/sse-andnps-1.c (TEST): Copy e into float[4]
	array to avoid violating TBAA.
	* gcc.target/powerpc/sse2-andpd-1.c (TEST): Copy e.d into double[2]
	array to avoid violating TBAA.
	* gcc.target/powerpc/sse-andps-1.c (TEST): Copy e.f into float[4]
	array to avoid violating TBAA.
	* gcc.target/powerpc/sse2-andnpd-1.c (TEST): Copy e into double[2]
	array to avoid violating TBAA.
2021-01-26 20:02:29 +01:00
Eric Botcazou
9c41bcc59c Fix PR ada/98228
This is the profiled bootstrap failure for s390x/Linux on the mainline,
which has been introduced by the modref pass but actually exposing an
existing issue in the maybe_pad_type function that is visible on s390x.

The issue is too weak a test for the addressability of the inner component.

gcc/ada/
	    Marius Hillenbrand  <mhillen@linux.ibm.com>

	PR ada/98228
	* gcc-interface/utils.c (maybe_pad_type): Test the size of the new
	packable type instead of its alignment for addressability's sake.
2021-01-26 19:03:58 +01:00
Jakub Jelinek
6e44c09b2d dwarf2asm: Fix bootstrap on powerpc*-*-* [PR98839]
My recent dwarf2asm.c patch broke powerpc*-*-* bootstrap, while most target
define POINTER_SIZE to (cond ? cst1 : cst2) or constant, rs6000 defines
it to a variable, and the arbitrarily chosen type of that variable determines
whether we get warnings on comparison of that against signed or unsigned
ints.

Fixed by adding a cast.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

	PR bootstrap/98839
	* dwarf2asm.c (dw2_assemble_integer): Cast DWARF2_ADDR_SIZE to int
	in comparison.
2021-01-26 18:13:07 +01:00
Jakub Jelinek
17ad8cdebe aarch64: Tighten up checks for ubfix [PR98681]
The testcase in the patch doesn't assemble, because the instruction requires
that the penultimate operand (lsb) range is [0, 32] (or [0, 64]) and the last
operand's range is [1, 32 - lsb] (or [1, 64 - lsb]).
The INTVAL (shft_amnt) < GET_MODE_BITSIZE (mode) will accept the lsb operand
to be in range [MIN, 32] (or [MIN, 64]) and then we invoke UB in the
compiler and sometimes it will make it through.
The patch changes all the INTVAL uses in that function to UINTVAL,
which isn't strictly necessary, but can be done (e.g. after the
UINTVAL (shft_amnt) < GET_MODE_BITSIZE (mode) check we know it is not
negative and thus INTVAL (shft_amnt) and UINTVAL (shft_amnt) then behave the
same.  But, I had to add INTVAL (mask) > 0 check in that case, otherwise we
risk (hypothetically) emitting instruction that doesn't assemble.
The problem is with masks that have the MSB bit set, while the instruction
can handle those, e.g.
ubfiz w1, w0, 13, 19
will do
(w0 << 13) & 0xffffe000
in RTL we represent SImode constants with MSB set as negative HOST_WIDE_INT,
so it will actually be HOST_WIDE_INT_C (0xffffffffffffe000), and
the instruction uses %P3 to print the last operand, which calls
asm_fprintf (f, "%u", popcount_hwi (INTVAL (x)))
to print that.  But that will not print 19, but 51 instead, will include
there also all the copies of the sign bit.
Not supporting those masks with MSB set isn't a big loss though, they really
shouldn't appear normally, as both GIMPLE and RTL optimizations should
optimize those away (one isn't masking any bits off with such masks, so
just w0 << 13 will do too).

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

	PR target/98681
	* config/aarch64/aarch64.c (aarch64_mask_and_shift_for_ubfiz_p):
	Use UINTVAL (shft_amnt) and UINTVAL (mask) instead of INTVAL (shft_amnt)
	and INTVAL (mask).  Add && INTVAL (mask) > 0 condition.

	* gcc.c-torture/execute/pr98681.c: New test.
2021-01-26 14:48:26 +01:00
Richard Biener
5bbc80d0e4 Fix dumping of VEC_WIDEN_{PLUS,MINUS}_{LO,HI}_EXPR
This avoids dumping them as <<< ??? >>>.

2021-01-26  Richard Biener  <rguenther@suse.de>

	* gimple-pretty-print.c (dump_binary_rhs): Handle
	VEC_WIDEN_{PLUS,MINUS}_{LO,HI}_EXPR.
2021-01-26 14:27:23 +01:00
Richard Biener
4b59dbb5d6 middle-end/98726 - fix VECTOR_CST element access
This fixes VECTOR_CST element access with POLY_INT elements and
allows to produce dump files of the PR98726 testcase without
ICEing.

2021-01-26  Richard Biener  <rguenther@suse.de>

	PR middle-end/98726
	* tree.h (vector_cst_int_elt): Remove.
	* tree.c (vector_cst_int_elt): Use poly_wide_int for computations,
	make static.
2021-01-26 14:27:04 +01:00
Martin Liska
2e81b16c24 liblsan: build missing lsan_posix.cpp file
libsanitizer/ChangeLog:

	PR sanitizer/98828
	* lsan/Makefile.am: Add missing lsan_posix.cpp file.
	* lsan/Makefile.in: Likewise.
2021-01-26 14:14:40 +01:00
Martin Liska
d40b21eebc libgcov: improve profile reproducibility
libgcc/ChangeLog:

	PR gcov-profile/98739
	* libgcov.h (gcov_topn_add_value): Do not train when
	we have a merged profile with a negative number of total
	value.
2021-01-26 12:44:34 +01:00
Thomas Koenig
80198c701a Commit test case for PR 67539.
gcc/testsuite/ChangeLog:

	PR fortran/67539
	* gfortran.dg/elemental_assignment_1.f90: New test.
2021-01-26 12:27:54 +01:00
Tobias Burnus
b3cc0c9a6a testsuite/g++.dg/modules/modules.exp: Janitorial fixes
gcc/testsuite/ChangeLog:

	* g++.dg/modules/modules.exp: Remove unused CXX_MODULE_PATH;
	add previously missing space in '$ident link'.
2021-01-26 11:46:01 +01:00
Andrew Stubbs
d9f5036610 amdgcn: Allow V64DFmode min/max reductions
I don't know why these were disabled. There're no direct min/max DPP
instructions for this mode, but the "use moves" strategy works fine.

gcc/ChangeLog:

	* config/gcn/gcn.c (gcn_expand_reduc_scalar): Use move instructions
	for V64DFmode min/max reductions.
2021-01-26 10:23:43 +00:00
Iain Buclaw
5a36cae275 d: Merge upstream dmd 609c3ce2d, phobos 3dd5df686
D front-end changes:

 - Contracts for pre- and postconditions are now implicitly "this"
   const, so that state can no longer be altered in these functions.

 - Inside a constructor scope, assigning to aggregate declaration
   members is done by considering the first assignment as initialization
   and subsequent assignments as modifications of the constructed
   object.  For const/immutable fields the initialization is accepted in
   the constructor but subsequent modifications are not.  However this
   rule did not apply when inside a constructor scope there is a call to
   a different constructor.  This been changed so it is now an error
   when there's a double initialization of immutable fields inside a
   constructor.

Phobos changes:

 - Don't run unit-tests for unsupported clocks in std.datetime.  The
   phobos and phobos_shared tests now add -fversion=Linux_Pre_2639 if
   required.

 - Deprecate public extern(C) bindings for getline and getdelim in
   std.stdio.  The correct module for bindings is core.sys.posix.stdio.

Reviewed-on: https://github.com/dlang/dmd/pull/12153
	     https://github.com/dlang/phobos/pull/7768

gcc/d/ChangeLog:

	* dmd/MERGE: Merge upstream dmd 609c3ce2d.
	* d-compiler.cc (Compiler::loadModule): Rename to ...
	(Compiler::onParseModule): ... this.
	(Compiler::onImport): New function.
	* d-lang.cc (d_parse_file): Remove call to Compiler::loadModule.

libphobos/ChangeLog:

	* src/MERGE: Merge upstream phobos 3dd5df686.
	* testsuite/libphobos.phobos/phobos.exp: Add compiler flag
	-fversion=Linux_Pre_2639 if target is linux_pre_2639.
	* testsuite/libphobos.phobos_shared/phobos_shared.exp: Likewise.
2021-01-26 09:54:57 +01:00
Jakub Jelinek
eb77a934ee testsuite: Fix up pr98807.c on i686-linux [PR98807]
The new testcase FAILs on i686-linux with:
gcc/testsuite/gcc.dg/pr98807.c: In function 'foo0':
gcc/testsuite/gcc.dg/pr98807.c:20:1: warning: SSE vector return without SSE enabled changes the ABI [-Wpsabi]
gcc/testsuite/gcc.dg/pr98807.c:19:1: note: the ABI for passing parameters with 16-byte alignment has changed in GCC 4.6
gcc/testsuite/gcc.dg/pr98807.c:19:1: warning: SSE vector argument without SSE enabled changes the ABI [-Wpsabi]
FAIL: gcc.dg/pr98807.c (test for excess errors)

Adding usual testcase treatment for such cases.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/98807
	* gcc.dg/pr98807.c: Add -Wno-psabi -w to dg-options.
2021-01-26 09:33:04 +01:00
Jakub Jelinek
7423731691 dwarf2asm: Fix up -gdwarf-64 for 32-bit targets
For the 32-bit targets the limitations of the object
file format (e.g. 32-bit ELF) will not allow > 2GiB debug info anyway,
and as I've just tested, e.g. on x86_64 with -m32 -gdwarf64 will not work
even on tiny testcases:
as: pr64716.o: unsupported relocation type: 0x1
pr64716.s: Assembler messages:
pr64716.s:6013: Error: cannot represent relocation type BFD_RELOC_64
as: pr64716.o: unsupported relocation type: 0x1
pr64716.s:6015: Error: cannot represent relocation type BFD_RELOC_64
as: pr64716.o: unsupported relocation type: 0x1
pr64716.s:6017: Error: cannot represent relocation type BFD_RELOC_64
So yes, we can either do a sorry, error, or could just avoid 64-bit
relocations (depending on endianity instead of emitting
.quad expression_that_needs_relocation
emit
.long expression_that_needs_relocation, 0
or
.long 0, expression_that_needs_relocation

This patch implements that last option, dunno if we need also configure tests
for that or not, maybe some 32-bit targets use 64-bit ELF and can handle such
relocations.

> 64bit relocs are not required here?  That is, can one with
> dwarf64 choose 32bit forms for select offsets (like could
> dwz exploit this?)?

I guess it depends on whether for 32-bit target and -gdwarf64, when
calling dw2_assemble_integer with non-CONST_INT argument we only
need positive values or might need negative ones too.
Because positive ones can be easily emulated through that
.long expression, 0
or
.long 0, expression
depending on endianity, but I'm afraid there is no way to emit
0 or -1 depending on the sign of expression, when it needs relocations.
Looking through dw2_asm_output_delta calls, at least the vast majority
of the calls seem to guarantee being positive, not 100% sure about
one case in .debug_line views, but I'd hope it is ok too.
In most cases, the deltas are between two labels where the first one
in the arguments is later in the same section than the other one,
or where the second argument is the start of a section or another section
base.

2021-01-26  Jakub Jelinek  <jakub@redhat.com>

	* dwarf2asm.c (dw2_assemble_integer): Handle size twice as large
	as DWARF2_ADDR_SIZE if x is not a scalar int by emitting it as
	two halves, one with x and the other with const0_rtx, ordered
	depending on endianity.
2021-01-26 09:20:23 +01:00
Alexandre Oliva
667c8e3327 skip asan-poisoning of discarded vars
GNAT may create temporaries to hold return values of function calls.
If such a temporary is created as part of a dynamic initializer of a
variable in a unit other than the one being compiled, the initializer
is dropped, including the temporary and its binding block.

Don't issue asan mark calls for such variables, they are gone.


for  gcc/ChangeLog

	* gimplify.c (gimplify_decl_expr): Skip asan marking calls for
	temporaries not seen in binding block, and not about to be
	added as gimple variables.

for  gcc/testsuite/ChangeLog

	* gnat.dg/asan1.adb: New test.
	* gnat.dg/asan1_pkg.ads: New additional source.
2021-01-25 21:45:58 -03:00
GCC Administrator
161e4c0862 Daily bump. 2021-01-26 00:16:34 +00:00
Harald Anlauf
a61efd4693 PR fortran/70070 - ICE on initializing character data beyond min/max bound
Check for initialization of substrings beyond bounds in DATA statements.

gcc/fortran/ChangeLog:

	PR fortran/70070
	* data.c (create_character_initializer): Check substring indices
	against bounds.
	(gfc_assign_data_value): Catch error returned from
	create_character_initializer.

gcc/testsuite/ChangeLog:

	PR fortran/70070
	* gfortran.dg/pr70070.f90: New test.
2021-01-25 21:33:53 +01:00
Martin Sebor
d6f1cf644c PR c++/98646 - spurious -Wnonnull calling a member on the result of static_cast
gcc/c-family/ChangeLog:

	PR c++/98646
	* c-common.c (check_nonnull_arg): Adjust warning text.

gcc/cp/ChangeLog:

	PR c++/98646
	* cvt.c (cp_fold_convert): Propagate TREE_NO_WARNING.

gcc/ChangeLog:

	PR c++/98646
	* tree-ssa-ccp.c (pass_post_ipa_warn::execute): Adjust warning text.

gcc/testsuite/ChangeLog:

	PR c++/98646
	* g++.dg/warn/Wnonnull5.C: Adjust text of an expected warning.
	* g++.dg/warn/Wnonnull10.C: New test.
	* g++.dg/warn/Wnonnull9.C: New test.
2021-01-25 12:41:28 -07:00
Thomas Koenig
7d54cccad3 Commit test case for PR 96386.
gcc/testsuite/ChangeLog:

	* gfortran.dg/associate_57.f90: New test.
2021-01-25 20:27:15 +01:00
Thomas Koenig
a43e0dfb63 Add test case for PR 96843.
gcc/testsuite/ChangeLog:

	PR fortran/96843
	* gfortran.dg/interface_assignment_7.f90: New test.
2021-01-25 20:21:39 +01:00
Kwok Cheung Yeung
0194e2f02d libgomp: Add documentation for omp_fulfill_event runtime function
2021-01-25  Kwok Cheung Yeung  <kcy@codesourcery.com>

	libgomp/
	* libgomp.texi (omp_fulfill_event): New entry.
2021-01-25 09:58:51 -08:00
Martin Liska
d9ad3b422f Fix wrong format for fprintf.
gcc/ChangeLog:

	* value-prof.c (get_nth_most_common_value): Use %s instead
	of %qs string.
2021-01-25 17:49:24 +01:00
Jason Merrill
94ff4c9dd9 c++: [[no_unique_address]] in empty base [PR98463]
In this testcase, cxx_eval_store_expression got confused trying to build up
CONSTRUCTORs for initializing a subobject because the subobject is a member
of an empty base.  In C++14 mode and below we don't build FIELD_DECLs for
empty bases, so the CONSTRUCTOR skipped the empty base, and treated the
member as a member of the derived class, which breaks.

Fixed by recognizing this situation and giving up on trying to build a
CONSTRUCTOR for the inner target at that point; since it doesn't have any
data, we don't need to actually store anything.

gcc/cp/ChangeLog:

	PR c++/98463
	* constexpr.c (get_or_insert_ctor_field): Add check.
	(cxx_eval_store_expression): Handle discontinuity of refs.

gcc/testsuite/ChangeLog:

	PR c++/98463
	* g++.dg/cpp2a/no_unique_address8.C: New test.
2021-01-25 10:36:27 -05:00
Tobias Burnus
10c83fb713 gcc/fortran/intrinsic.texi: Fix typos
gcc/fortran/ChangeLog:

	* intrinsic.texi (CO_BROADCAST, CO_MIN, CO_REDUCE, CO_SUM): Fix typos.
2021-01-25 14:43:52 +01:00
Jakub Jelinek
fe5cb7f94d configure: Add workaround for buggy binutils 2.35 [PR98811]
binutils since https://sourceware.org/bugzilla/show_bug.cgi?id=25612
changes from March last year until the
https://sourceware.org/pipermail/binutils/2020-August/112684.html
fix in early August emits incorrect .debug_info when assembling files
with --gdwarf-5.  Instead of emitting proper DWARF 5 .debug_info header,
it emits DWARF 4 .debug_info header with 5 as the dwarf version instead of
4.  This results e.g. in libgcc.a (morestack.o) having garbage in its
.debug_info sections and e.g. libbacktrace during pretty much all libgo
tests fails miserably.

The following patch adds a workaround for that, don't set
HAVE_AS_GDWARF_5_DEBUG_FLAG if readelf can't read the .debug_info back.

Built tested on x86_64-linux against both binutils 2.35 (buggy ones) and
latest binutils trunk, the former with the patch now has DWARF 3
.debug_line and DWARF 2 .debug_info in morestack.o, while the latter
as before correct DWARF 5 .debug_line and .debug_info.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

	PR debug/98811
	* configure.ac (HAVE_AS_GDWARF_5_DEBUG_FLAG): Only define if
	readelf -wi is able to read the emitted .debug_info back.
	* configure: Regenerated.
2021-01-25 14:20:05 +01:00
Martin Liska
e05a117dc4 Enable -fprofile-reproducible=parallel-runs for profiledbootstrap.
ChangeLog:

	PR gcov-profile/98739
	* Makefile.in: Enable -fprofile-reproducible=parallel-runs
	for profiledbootstrap.
2021-01-25 13:31:05 +01:00
Martin Liska
5089df534b Restore profile reproducibility.
gcc/ChangeLog:

	PR gcov-profile/98739
	* common.opt: Add missing sign symbol.
	* value-prof.c (get_nth_most_common_value): Restore handling
	of PROFILE_REPRODUCIBILITY_PARALLEL_RUNS and
	PROFILE_REPRODUCIBILITY_MULTITHREADED.

libgcc/ChangeLog:

	PR gcov-profile/98739
	* libgcov-merge.c (__gcov_merge_topn): Mark when merging
	ends with a dropped counter.
	* libgcov.h (gcov_topn_add_value): Add return value.
2021-01-25 13:30:34 +01:00
Richard Biener
defc40db9e middle-end/98807 - more vector_element_bits fixes
This simplifies vector_element_bits further, avoiding any mode
dependence and instead relying on boolean vector construction
to populate element precision accordingly.

2021-01-25  Richard Biener  <rguenther@suse.de>

	PR middle-end/98807
	* tree.c (vector_element_bits): Always use precision of
	the element type for boolean vectors.

	* gcc.dg/pr98807.c: New testcase.
2021-01-25 13:18:13 +01:00
Sebastian Huber
0433fc2d7d RTEMS: Fix default linker script
We have to use ENDFILE_SPEC for the default linker script and not
STARTFILE_SPEC, since STARTFILE_SPEC is place before the user provided
library search paths.

gcc/

	* config/rtems.h (STARTFILE_SPEC): Remove qnolinkcmds.
	(ENDFILE_SPEC): Evaluate qnolinkcmds.
2021-01-25 12:31:23 +01:00
Eric Botcazou
5d01fc7c11 Fix internal error on extension with interface at -O2
This is a regression present on the mainline, 10 and 9 branches, in the
form of an internal error with the Ada compiler when a covariant-only
thunk is inlined into its caller.

gcc/ada/
	* gcc-interface/trans.c (make_covariant_thunk): Set the DECL_CONTEXT
	of the parameters and do not set TREE_PUBLIC on the thunk.
	(maybe_make_gnu_thunk): Pass the alias to the covariant thunk.
	* gcc-interface/utils.c (finish_subprog_decl): Set the DECL_CONTEXT
	of the parameters here...
	(begin_subprog_body): ...instead of here.

gcc/testsuite/
	* gnat.dg/thunk2.adb, gnat.dg/thunk2.ads: New test.
	* gnat.dg/thunk2_pkg.ads: New helper.
2021-01-25 11:30:00 +01:00
Paul Thomas
c6b0e33feb Fortran: Fix deferred character lengths in array constructors [PR98517].
2021-01-25  Steve Kargl  <kargl@gcc.gnu.org>

gcc/fortran
	PR fortran/98517
	* resolve.c (resolve_charlen): Check that length expression is
	present before testing for scalar/integer..

gcc/testsuite/
	PR fortran/98517
	* gfortran.dg/charlen_18.f90 : New test.
2021-01-25 10:27:51 +00:00
Sebastian Huber
28229916e1 RTEMS: Fix GCC specification
The use of -nostdlib and -nodefaultlibs disables the processing of
LIB_SPEC (%L) as specified by LINK_COMMAND_SPEC and thus disables the
default linker script for RTEMS.  Move the linker script to
STARTFILE_SPEC which is controlled by -nostdlib and -nostartfiles.  This
fits better since the linker script defines the platform start file
provided by the board support package in RTEMS.

gcc/

	* config/rtems.h (STARTFILE_SPEC): Remove nostdlib and
	nostartfiles handling since this is already done by
	LINK_COMMAND_SPEC.  Evaluate qnolinkcmds.
	(ENDFILE_SPEC): Remove nostdlib and nostartfiles handling since this
	is already done by LINK_COMMAND_SPEC.
	(LIB_SPECS): Remove nostdlib and nodefaultlibs handling since
	this is already done by LINK_COMMAND_SPEC.  Remove qnolinkcmds
	evaluation.
2021-01-25 10:33:52 +01:00
Jakub Jelinek
b7a0507ad9 fold: Fix up strn{case,}cmp folding [PR98771]
As mentioned in the PR, the compiler behaves differently during strncmp
and strncasecmp folding between 32-bit and 64-bit hosts targeting 64-bit
target.  I think that is highly undesirable.

The culprit is the host_size_t_cst_p predicate that is used by
fold_const_call, which punts if the target size_t constants don't fit into
host size_t.  This patch gets rid of that behavior, instead it punts the
same when it doesn't fit into uhwi.

The predicate was used for strncmp and strncasecmp folding and for bcmp, memcmp and
memchr folding.
The constant is in all cases compared to 0, we can do that whether it fits
into size_t or unsigned HOST_WIDE_INT, then it is used in s2 <= s0 or
s2 <= s1 comparisons where s0 and s1 already have uhwi type and represent
the sizes of the objects.
The important difference is for strn{,case}cmp folding, we pass that s2
value as the last argument to the host functions comparing the c_getstr
results.  If s2 fits into size_t, then my patch makes no difference,
but if it is larger, we know the 2 c_getstr objects need to fit into the
host address space, so larger s2 should just act essentially as strcmp
or strcasecmp; as none of those objects can occupy 100% of the address
space, using MIN (SIZE_MAX, s2) achieves that.

2021-01-25  Jakub Jelinek  <jakub@redhat.com>

	PR testsuite/98771
	* fold-const-call.c (host_size_t_cst_p): Renamed to ...
	(size_t_cst_p): ... this.  Check and store unsigned HOST_WIDE_INT
	value rather than host size_t.
	(fold_const_call): Change type of s2 from size_t to
	unsigned HOST_WIDE_INT.  Use size_t_cst_p instead of
	host_size_t_cst_p.  For strncmp calls, pass MIN (s2, SIZE_MAX)
	instead of s2 as last argument.
2021-01-25 10:03:40 +01:00
Tamar Christina
389b67feac Arm: Add NEON and MVE complex mul, mla and mls patterns.
This adds implementation for the optabs for complex operations.  With this the
following C code:

  void g (float complex a[restrict N], float complex b[restrict N],
	  float complex c[restrict N])
  {
    for (int i=0; i < N; i++)
      c[i] =  a[i] * b[i];
  }

generates

NEON:

g:
        vmov.f32        q11, #0.0  @ v4sf
        add     r3, r2, #1600
.L2:
        vmov    q8, q11  @ v4sf
        vld1.32 {q10}, [r1]!
        vld1.32 {q9}, [r0]!
        vcmla.f32       q8, q9, q10, #0
        vcmla.f32       q8, q9, q10, #90
        vst1.32 {q8}, [r2]!
        cmp     r3, r2
        bne     .L2
        bx      lr

MVE:

g:
        push    {lr}
        mov     lr, #100
        dls     lr, lr
.L2:
        vldrw.32        q1, [r1], #16
        vldrw.32        q2, [r0], #16
        vcmul.f32       q3, q2, q1, #0
        vcmla.f32       q3, q2, q1, #90
        vstrw.32        q3, [r2], #16
        le      lr, .L2
        ldr     pc, [sp], #4

instead of

g:
        add     r3, r2, #1600
.L2:
        vld2.32 {d20-d23}, [r0]!
        vld2.32 {d16-d19}, [r1]!
        vmul.f32        q14, q11, q9
        vmul.f32        q15, q11, q8
        vneg.f32        q14, q14
        vfma.f32        q15, q10, q9
        vfma.f32        q14, q10, q8
        vmov    q13, q15  @ v4sf
        vmov    q12, q14  @ v4sf
        vst2.32 {d24-d27}, [r2]!
        cmp     r3, r2
        bne     .L2
        bx      lr

and

g:
        add     r3, r2, #1600
.L2:
        vld2.32 {d20-d23}, [r0]!
        vld2.32 {d16-d19}, [r1]!
        vmul.f32        q15, q10, q8
        vmul.f32        q14, q10, q9
        vmls.f32        q15, q11, q9
        vmla.f32        q14, q11, q8
        vmov    q12, q15  @ v4sf
        vmov    q13, q14  @ v4sf
        vst2.32 {d24-d27}, [r2]!
        cmp     r3, r2
        bne     .L2
        bx      lr

respectively.

gcc/ChangeLog:

	* config/arm/iterators.md (rotsplit1, rotsplit2, conj_op, fcmac1,
	VCMLA_OP, VCMUL_OP): New.
	* config/arm/mve.md (mve_vcmlaq<mve_rot><mode>): Support vec_dup 0.
	* config/arm/neon.md (cmul<conj_op><mode>3): New.
	* config/arm/unspecs.md (UNSPEC_VCMLA_CONJ, UNSPEC_VCMLA180_CONJ,
	UNSPEC_VCMUL_CONJ): New.
	* config/arm/vec-common.md (cmul<conj_op><mode>3, arm_vcmla<rot><mode>,
	cml<fcmac1><conj_op><mode>4): New.
2021-01-25 08:56:37 +00:00
GCC Administrator
02551aa999 Daily bump. 2021-01-25 00:16:24 +00:00
GCC Administrator
6b1633378b Daily bump. 2021-01-24 00:16:16 +00:00
Iain Buclaw
81f928ec8e libphobos: Fix executables segfault on mipsel architecture
The dynamic section on MIPS is read-only, but this was not properly
handled in the runtime library.  The segfault only occurred for programs
that linked to the shared libphobos library.

libphobos/ChangeLog:

	PR d/98806
	* libdruntime/gcc/sections/elf_shared.d (MIPS_Any): Declare version
	for MIPS32 and MIPS64.
	(getDependencies): Adjust dlpi_addr on MIPS_Any.
2021-01-24 00:20:25 +01:00