platform/upstream/gcc.git
2 years agoFortran: F2018 type(*),dimension(*) with scalars [PR104143]
Tobias Burnus [Tue, 20 Sep 2022 21:06:19 +0000 (23:06 +0200)]
Fortran: F2018 type(*),dimension(*) with scalars [PR104143]

Assumed-size dummy arguments accept arrays and array elements as actual
arguments. There are also a few exceptions when real scalars are permitted.
Since F2018, this includes scalar arguments to assumed-type dummies; while
type(*) was added in TS29113, this change is only in F2018 itself.

PR fortran/104143

gcc/fortran/ChangeLog:

* interface.cc (compare_parameter): Permit scalar args to
'type(*), dimension(*)'.

gcc/testsuite/ChangeLog:

* gfortran.dg/c-interop/c407b-2.f90: Remove dg-error.
* gfortran.dg/assumed_type_16.f90: New test.
* gfortran.dg/assumed_type_17.f90: New test.

2 years agoFortran: error recovery on invalid ARRAY argument to FINDLOC [PR106986]
Harald Anlauf [Tue, 20 Sep 2022 20:41:48 +0000 (22:41 +0200)]
Fortran: error recovery on invalid ARRAY argument to FINDLOC [PR106986]

gcc/fortran/ChangeLog:

PR fortran/106986
* simplify.cc (gfc_simplify_findloc): Do not try to simplify
intrinsic FINDLOC when the ARRAY argument has a NULL shape.

gcc/testsuite/ChangeLog:

PR fortran/106986
* gfortran.dg/pr106986.f90: New test.

2 years agoFortran: NULL pointer dereference in invalid simplification [PR106985]
Harald Anlauf [Tue, 20 Sep 2022 20:23:43 +0000 (22:23 +0200)]
Fortran: NULL pointer dereference in invalid simplification [PR106985]

gcc/fortran/ChangeLog:

PR fortran/106985
* expr.cc (gfc_simplify_expr): Avoid NULL pointer dereference.

gcc/testsuite/ChangeLog:

PR fortran/106985
* gfortran.dg/pr106985.f90: New test.

2 years agoc++: xtreme-header modules tests cleanups
Patrick Palka [Tue, 20 Sep 2022 20:13:48 +0000 (16:13 -0400)]
c++: xtreme-header modules tests cleanups

This adds some recently implemented C++20/23 library headers to the
xtreme-header tests as appropriate.  Also, it looks like we can safely
re-add <execution> and remove the NO_ASSOCIATED_LAMBDA workaround.

gcc/testsuite/ChangeLog:

* g++.dg/modules/xtreme-header-2.h: Include <execution>.
* g++.dg/modules/xtreme-header-6.h: Include implemented
C++20 library headers.
* g++.dg/modules/xtreme-header.h: Likewise.  Remove
NO_ASSOCIATED_LAMBDA workaround.  Include implemented C++23
library headers.

2 years agoc++: modules and non-dependent auto deduction
Patrick Palka [Tue, 20 Sep 2022 20:08:14 +0000 (16:08 -0400)]
c++: modules and non-dependent auto deduction

The modules streaming code seems to rely on the invariant that a
TEMPLATE_DECL and its DECL_TEMPLATE_RESULT have the same TREE_TYPE.
But for a non-dependent VAR_DECL with deduced type, the two TREE_TYPEs
end up diverging: cp_finish_decl deduces the type of the initializer
ahead of time and updates the TREE_TYPE of the VAR_DECL, but neglects to
update the corresponding TEMPLATE_DECL as well, which leads to a
"conflicting global module declaration" error for each of the
__phase_alignment decls in the below testcase (and for the xtreme-header
tests if we try including <barrier>).

This patch makes cp_finish_decl update the TREE_TYPE of the corresponding
TEMPLATE_DECL so that the invariant is maintained.

gcc/cp/ChangeLog:

* decl.cc (cp_finish_decl): After updating the deduced type of a
VAR_DECL, also update the corresponding TEMPLATE_DECL if there
is one.

gcc/testsuite/ChangeLog:

* g++.dg/modules/auto-3.h: New test.
* g++.dg/modules/auto-3_a.H: New test.
* g++.dg/modules/auto-3_b.C: New test.

2 years agoFortran: Fix function attributes [PR100132]
José Rui Faustino de Sousa [Mon, 19 Sep 2022 20:00:45 +0000 (22:00 +0200)]
Fortran: Fix function attributes [PR100132]

gcc/fortran/ChangeLog:

PR fortran/100132
* trans-types.cc (create_fn_spec): Fix function attributes when
passing polymorphic pointers.

gcc/testsuite/ChangeLog:

PR fortran/100132
* gfortran.dg/PR100132.f90: New test.

2 years agofrange::maybe_isnan() should return FALSE for undefined ranges.
Aldy Hernandez [Tue, 20 Sep 2022 14:09:31 +0000 (16:09 +0200)]
frange::maybe_isnan() should return FALSE for undefined ranges.

Undefined ranges have undefined NAN bits.  We can't depend on them,
as they may contain garbage.  This patch returns false from
maybe_isnan() for undefined ranges (the empty set).

gcc/ChangeLog:

* value-range.h (frange::maybe_isnan): Return false for
undefined ranges.

2 years agofrange::set_nonnegative should not contain -NAN.
Aldy Hernandez [Mon, 19 Sep 2022 07:59:01 +0000 (09:59 +0200)]
frange::set_nonnegative should not contain -NAN.

A specifically nonnegative range should not contain -NAN, otherwise
signbit_p() would return false, because we'd be unsure of the sign.

PR 68097/tree-optimization

gcc/ChangeLog:

* value-range.cc (frange::set_nonnegative): Set +NAN.
(range_tests_signed_zeros): New test.
* value-range.h (frange::update_nan): New overload to set NAN sign.

2 years agofortran: add link to ISO_VARYING_STRING module [PR106636]
Martin Liska [Tue, 20 Sep 2022 12:23:29 +0000 (14:23 +0200)]
fortran: add link to ISO_VARYING_STRING module [PR106636]

PR fortran/106636

gcc/fortran/ChangeLog:

* gfortran.texi: Add back link to ISO_VARYING_STRING.

2 years agoaarch64: Fix GTY markup for arm_sve.h [PR106491]
Richard Sandiford [Tue, 20 Sep 2022 14:27:47 +0000 (15:27 +0100)]
aarch64: Fix GTY markup for arm_sve.h [PR106491]

It turns out that GTY(()) markers in definitions like:

  GTY(()) tree scalar_types[NUM_VECTOR_TYPES];

are not effective and are silently ignored.  The GTY(()) has
to come after an extern or static.

The externs associated with the SVE ACLE GTY variables are in
aarch64-sve-builtins.h.  This file is not in tm_include_list because
we don't want every target-facing file to include it.  It therefore
isn't in the list of GC header files either.

In this case that's a blessing in disguise, since the variables
belong to a namespace and gengtype doesn't understand namespaces.
I think the fix is instead to add an extra extern before each
variable declaration, similarly to varasm.cc and vtable-verify.cc.
(This works due to a "using namespace" at the end of the file.)

gcc/
PR target/106491
* config/aarch64/aarch64-sve-builtins.cc (scalar_types)
(acle_vector_types, acle_svpattern, acle_svprfop): Add GTY
markup to (new) extern declarations instead of to the main
definition.

2 years agovect: Fix SLP layout handling of masked loads [PR106794]
Richard Sandiford [Tue, 20 Sep 2022 14:27:47 +0000 (15:27 +0100)]
vect: Fix SLP layout handling of masked loads [PR106794]

PR106794 shows that I'd forgotten about masked loads when
doing the SLP layout changes.  These loads can't currently
be permuted independently of their mask input, so during
construction they never get a load permutation.

(If we did support permuting masked loads in future, the mask
would need to be in the right order for the load, rather than in
the order implied by the result of the permutation.  Since masked
loads can't be partly or fully scalarised in the way that normal
permuted loads can be, there's probably no benefit to fusing the
permutation and the load.  Permutation after the fact is probably
good enough.)

gcc/
PR tree-optimization/106794
PR tree-optimization/106914
* tree-vect-slp.cc (vect_optimize_slp_pass::internal_node_cost):
Only consider loads that already have a permutation.
(vect_optimize_slp_pass::start_choosing_layouts): Assert that
loads with permutations are leaf nodes.  Prevent any kind of grouped
access from changing layout if it doesn't have a load permutation.

gcc/testsuite/
* gcc.dg/vect/pr106914.c: New test.
* g++.dg/vect/pr106794.cc: Likewise.

2 years agovect: Fix missed gather load opportunity
Richard Sandiford [Tue, 20 Sep 2022 14:27:46 +0000 (15:27 +0100)]
vect: Fix missed gather load opportunity

While writing a testcase for PR106794, I noticed that we failed
to vectorise the testcase in the patch for SVE.  The code that
recognises gather loads tries to optimise the point at which
the offset is calculated, to avoid unnecessary extensions or
truncations:

  /* Don't include the conversion if the target is happy with
     the current offset type.  */

But breaking only makes sense if we're at an SSA_NAME (which could
then be vectorised).  We shouldn't break on a conversion embedded
in a generic expression.

gcc/
* tree-vect-data-refs.cc (vect_check_gather_scatter): Restrict
early-out optimisation to SSA_NAMEs.

gcc/testsuite/
* gcc.dg/vect/vect-gather-5.c: New test.

2 years ago[PR106970] New test for PR that has already been fixed.
Aldy Hernandez [Tue, 20 Sep 2022 14:06:05 +0000 (16:06 +0200)]
[PR106970] New test for PR that has already been fixed.

PR tree-optimization/106970

gcc/testsuite/ChangeLog:

* gcc.dg/tree-ssa/pr106970.c: New test.

2 years agoc++: stream PACK_EXPANSION_EXTRA_ARGS [PR106761]
Patrick Palka [Tue, 20 Sep 2022 14:19:30 +0000 (10:19 -0400)]
c++: stream PACK_EXPANSION_EXTRA_ARGS [PR106761]

It looks like after the libstdc++ commit r13-2158-g02f6b405f0e9dc
some xtreme-header-* tests are failing with "conflicting global module
declaration" errors ultimately because we're neglecting to stream
PACK_EXPANSION_EXTRA_ARGS, which leads to wrong equivalences of
different partial instantiations of _TupleConstraints::__constructible.

PR c++/106761

gcc/cp/ChangeLog:

* module.cc (trees_out::type_node) <case TYPE_PACK_EXPANSION>:
Stream PACK_EXPANSION_EXTRA_ARGS.
(trees_in::tree_node) <case TYPE_PACK_EXPANSION>: Likewise.

gcc/testsuite/ChangeLog:

* g++.dg/modules/pr106761.h: New test.
* g++.dg/modules/pr106761_a.H: New test.
* g++.dg/modules/pr106761_b.C: New test.

2 years agoreplace "the the" typos
Martin Liska [Tue, 20 Sep 2022 13:05:33 +0000 (15:05 +0200)]
replace "the the" typos

gcc/ada/ChangeLog:

* exp_ch6.adb: Replace "the the" with "the".
* sem_ch6.adb: Likewise.
* sem_disp.ads: Likewise.

gcc/ChangeLog:

* ctfc.cc (ctf_add_string): Replace "the the" with "the".
* doc/md.texi: Likewise.
* gimple-range-infer.cc (non_null_loadstore): Likewise.

gcc/fortran/ChangeLog:

* gfortran.texi: Replace "the the" with "the".

gcc/testsuite/ChangeLog:

* g++.dg/warn/Wclass-memaccess.C: Replace "the the" with "the".
* g++.dg/warn/Wconversion-real-integer2.C: Likewise.
* gcc.target/powerpc/p9-extract-1.c: Likewise.
* gcc.target/s390/s390.exp: Likewise.
* gcc.target/s390/zvector/vec-cmp-2.c: Likewise.
* gdc.dg/torture/simd_store.d: Likewise.
* gfortran.dg/actual_array_offset_1.f90: Likewise.
* gfortran.dg/pdt_15.f03: Likewise.
* gfortran.dg/pointer_array_8.f90: Likewise.

2 years agolibstdc++: Fix typo in <cstdlib> for freestanding
Jonathan Wakely [Tue, 20 Sep 2022 12:20:33 +0000 (13:20 +0100)]
libstdc++: Fix typo in <cstdlib> for freestanding

libstdc++-v3/ChangeLog:

* include/c_global/cstdlib [!_GLIBCXX_HOSTED] (quick_exit): Fix
missing space.

2 years agofortran: remove 2 dead links [PR106636]
Martin Liska [Tue, 20 Sep 2022 12:02:34 +0000 (14:02 +0200)]
fortran: remove 2 dead links [PR106636]

PR fortran/106636

gcc/fortran/ChangeLog:

* gfortran.texi: Remove 2 dead links.

2 years agocontrib: skip new egrep warning
Martin Liska [Tue, 20 Sep 2022 08:16:47 +0000 (10:16 +0200)]
contrib: skip new egrep warning

contrib/ChangeLog:

* filter-clang-warnings.py: Skip egrep: warning: egrep is
  obsolescent; using grep -E.

2 years agoSupport 64-bit vectorization for single-precision floating rounding operation.
liuhongt [Fri, 16 Sep 2022 06:28:34 +0000 (14:28 +0800)]
Support 64-bit vectorization for single-precision floating rounding operation.

Here's list the patch supported.
rint/nearbyint/ceil/floor/trunc/lrint/lceil/lfloor/round/lround.

gcc/ChangeLog:

PR target/106910
* config/i386/mmx.md (nearbyintv2sf2): New expander.
(rintv2sf2): Ditto.
(ceilv2sf2): Ditto.
(lceilv2sfv2si2): Ditto.
(floorv2sf2): Ditto.
(lfloorv2sfv2si2): Ditto.
(btruncv2sf2): Ditto.
(lrintv2sfv2si2): Ditto.
(roundv2sf2): Ditto.
(lroundv2sfv2si2): Ditto.
(*mmx_roundv2sf2): New define_insn.

gcc/testsuite/ChangeLog:

* gcc.target/i386/pr106910-1.c: New test.

2 years agomiddle-end: handle bitop with an invariant induction.[PR105735]
konglin1 [Tue, 20 Sep 2022 05:58:35 +0000 (13:58 +0800)]
middle-end: handle bitop with an invariant induction.[PR105735]

Enhance final_value_replacement_loop to handle bitop
with an invariant induction.

This patch will enable below optimization:

{
-  long unsigned int bit;
-
-  <bb 2> [local count: 32534376]:
-
-  <bb 3> [local count: 1041207449]:
-  # tmp_10 = PHI <tmp_7(5), tmp_4(D)(2)>
-  # bit_12 = PHI <bit_8(5), 0(2)>
-  tmp_7 = bit2_6(D) & tmp_10;
-  bit_8 = bit_12 + 1;
-  if (bit_8 != 32)
-    goto <bb 5>; [96.97%]
-  else
-    goto <bb 4>; [3.03%]
-
-  <bb 5> [local count: 1009658865]:
-  goto <bb 3>; [100.00%]
-
-  <bb 4> [local count: 32534376]:
-  # tmp_11 = PHI <tmp_7(3)>
-  return tmp_11;
+  tmp_11 = tmp_4 (D) & bit2_6 (D);
+  return tmp_11;

}

gcc/ChangeLog:

PR middle-end/105735
* tree-scalar-evolution.cc
(analyze_and_compute_bitop_with_inv_effect): New function.
(final_value_replacement_loop): Enhanced to handle bitop
with inv induction.

gcc/testsuite/ChangeLog:

* gcc.target/i386/pr105735-1.c: New test.
* gcc.target/i386/pr105735-2.c: New test.

2 years agoLoongArch: Prepare static PIE support
Xi Ruoyao [Tue, 13 Sep 2022 15:21:39 +0000 (23:21 +0800)]
LoongArch: Prepare static PIE support

Static PIE allows us to extend the ASLR to cover static executables and
it's not too difficult to support it.  On GCC side, we just pass a group
of options to the linker, like other ports with static PIE support.

The real implementation of static PIE (rcrt1.o) will be added into Glibc
later.

gcc/ChangeLog:

* config/loongarch/gnu-user.h (GNU_USER_TARGET_LINK_SPEC): For
-static-pie, pass -static -pie --no-dynamic-linker -z text to
the linker, and do not pass --dynamic-linker.

2 years agofrange: flush denormals to zero
Aldy Hernandez [Sat, 17 Sep 2022 08:17:13 +0000 (10:17 +0200)]
frange: flush denormals to zero

For some architectures (or for -funsafe-math-optimizations) we may
flush denormals to zero, in which case we need to be careful to
extend the ranges to the appropriate zero.  This patch does exactly that.
For a range of [x, -DENORMAL] we flush to [x, -0.0] and for [+DENORMAL, x]
we flush to [+0.0, x].

gcc/ChangeLog:

* value-range.cc (frange::flush_denormals_to_zero): New.
(frange::set): Call flush_denormals_to_zero.
* value-range.h (class frange): Add flush_denormals_to_zero.

2 years agoAdjust issue_rate for latest Intel processors.
liuhongt [Tue, 6 Sep 2022 03:04:40 +0000 (11:04 +0800)]
Adjust issue_rate for latest Intel processors.

For Skylake based processor, decoder is 4-way.
For Sunny Cove and Willow Cove, decoder is 5-way.
For Golden cove, decoder is 6-way.

gcc/ChangeLog:

* config/i386/x86-tune-sched.cc (ix86_issue_rate): Adjust for
latest Intel processors.

2 years agoi386: Fixed vec_init_dup_v16bf [PR106887]
konglin1 [Fri, 16 Sep 2022 07:59:19 +0000 (15:59 +0800)]
i386: Fixed vec_init_dup_v16bf [PR106887]

gcc/ChangeLog:

PR target/106887
* config/i386/i386-expand.cc (ix86_expand_vector_init_duplicate):
Fixed V16BF mode case.

gcc/testsuite/ChangeLog:

PR target/106887
* gcc.target/i386/vect-bfloat16-2c.c: New test.

2 years agoDaily bump.
GCC Administrator [Tue, 20 Sep 2022 00:17:49 +0000 (00:17 +0000)]
Daily bump.

2 years agoc: Stray inform note with -Waddress [PR106947]
Marek Polacek [Mon, 19 Sep 2022 18:12:55 +0000 (14:12 -0400)]
c: Stray inform note with -Waddress [PR106947]

A trivial fix for maybe_warn_for_null_address where we print an
inform note without first checking the return value of a warning
call.

PR c/106947

gcc/c/ChangeLog:

* c-typeck.cc (maybe_warn_for_null_address): Don't emit stray
notes.

gcc/testsuite/ChangeLog:

* c-c++-common/Waddress-7.c: New test.

2 years agoFortran: add IEEE_MODES_TYPE, IEEE_GET_MODES and IEEE_SET_MODES
Francois-Xavier Coudert [Sun, 4 Sep 2022 16:24:23 +0000 (18:24 +0200)]
Fortran: add IEEE_MODES_TYPE, IEEE_GET_MODES and IEEE_SET_MODES

The IEEE_MODES_TYPE type and the two functions that get and set it
were added in Fortran 2018.  They can be implemented using the already
existing target-specific functions.  A future optimization could, on
some targets, set/get all modes through one or two instructions only,
but that would need a new set of functions in all config/fpu-* files.

2022-09-04  Francois-Xavier Coudert  <fxcoudert@gcc.gnu.org>

libgfortran/

* ieee/ieee_exceptions.F90: Add IEEE_MODES_TYPE, IEEE_GET_MODES
and IEEE_SET_MODES.
* ieee/ieee_arithmetic.F90: Make them public in IEEE_ARITHMETIC
as well.

gcc/testsuite/

* gfortran.dg/ieee/modes_1.f90: New test.

2 years agoImprove sorry message for -fzero-call-used-regs
Torbjörn SVENSSON [Thu, 15 Sep 2022 06:59:30 +0000 (08:59 +0200)]
Improve sorry message for -fzero-call-used-regs

When the -fzero-call-used-regs command line option is used with an
unsupported value, indicate that it's a value problem instead of an
option problem.

Without the patch, the error is:
In file included from gcc/testsuite/c-c++-common/zero-scratch-regs-8.c:5:
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c: In function 'foo':
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c:10:1: sorry, unimplemented: '-fzero-call-used-regs' not supported on this target
   10 | }
      | ^

With the patch, the error would be like this:
 In file included from gcc/testsuite/c-c++-common/zero-scratch-regs-8.c:5:
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c: In function 'foo':
gcc/testsuite/c-c++-common/zero-scratch-regs-1.c:10:1: sorry, unimplemented: argument 'all-arg' is not supported for '-fzero-call-used-regs' on this target
   10 | }
      | ^

2022-09-19  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>

gcc/ChangeLog:

* targhooks.cc (default_zero_call_used_regs): Improve sorry
message.

Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
2 years agoFortran: F2018 rounding modes changes
Francois-Xavier Coudert [Wed, 31 Aug 2022 17:15:20 +0000 (19:15 +0200)]
Fortran: F2018 rounding modes changes

Add the new IEEE_AWAY rounding mode. It is unsupported on all known
targets, but could be supported by glibc and AIX as part of the C2x
proposal. Testing for now is minimal.

Add the optional RADIX argument to IEEE_SET_ROUNDING_MODE and
IEEE_GET_ROUNDING_MODE. It is unused for now, because we do not
support radices other than 2.

2022-08-31  Francois-Xavier Coudert <fxcoudert@gcc.gnu.org>

gcc/fortran/
* libgfortran.h: Declare GFC_FPE_AWAY.

gcc/testsuite/
* gfortran.dg/ieee/rounding_2.f90: New test.

libgfortran/
* ieee/ieee_arithmetic.F90: Add RADIX argument to
IEEE_SET_ROUNDING_MODE and IEEE_GET_ROUNDING_MODE.
* config/fpu-387.h: Add IEEE_AWAY mode.
* config/fpu-aarch64.h: Add IEEE_AWAY mode.
* config/fpu-aix.h: Add IEEE_AWAY mode.
* config/fpu-generic.h: Add IEEE_AWAY mode.
* config/fpu-glibc.h: Add IEEE_AWAY mode.
* config/fpu-sysv.h: Add IEEE_AWAY mode.

2 years agoFix PR target/99184: Wrong cast from double to 16-bit and 32-bit ints
Georg-Johann Lay [Mon, 19 Sep 2022 07:46:58 +0000 (09:46 +0200)]
Fix PR target/99184: Wrong cast from double to 16-bit and 32-bit ints

this patch fixed PR target/99184 which incorrectly rounded during 64-bit
(long) double to 16-bit and 32-bit integers.

The patch just removes the respective roundings from
libf7-asm.sx::to_integer and ::to_unsigned.  Luckily, LibF7 does nowhere
use respective functions internally, the only user is in libf7.c::f7_exp

which reads

   f7_round (qq, qq);
   int16_t q = f7_get_s16 (qq);

so that f7_get_s16() operates on an already rounded value, and therefore
this code works unaltered with or without rounding in to_integer.

PR target/99184
libgcc/config/avr/libf7/
* libf7-asm.sx (to_integer, to_unsigned): Don't round 16-bit
and 32-bit integers.

2 years agoDaily bump.
GCC Administrator [Mon, 19 Sep 2022 00:17:27 +0000 (00:17 +0000)]
Daily bump.

2 years agoOpenMP: Push attaches to end of clause list in "target" regions
Julian Brown [Wed, 7 Sep 2022 21:45:07 +0000 (21:45 +0000)]
OpenMP: Push attaches to end of clause list in "target" regions

This patch moves GOMP_MAP_ATTACH{_ZERO_LENGTH_ARRAY_SECTION} nodes to
the end of the clause list, for offload regions.  This ensures that when
we do the attach operation, both the "attachment point" and the target
region have both already been mapped on the target.  This avoids a
pathological case that can otherwise happen with struct sibling-list
handling.

This version of the patch moves the attach-node motion to
gimplify_adjust_omp_clauses.

2022-09-15  Julian Brown  <julian@codesourcery.com>

gcc/
* gimplify.cc (omp_segregate_mapping_groups): Update comment.
(gimplify_adjust_omp_clauses): Move ATTACH and
ATTACH_ZERO_LENGTH_ARRAY_SECTION nodes to the end of the clause list
for offloaded OpenMP regions.

gcc/testsuite/
* g++.dg/gomp/target-lambda-1.C: Adjust expected scan output.

2 years agoRemove dependency on uintptr_t in libgcc
Thomas Neumann [Sun, 18 Sep 2022 09:31:01 +0000 (11:31 +0200)]
Remove dependency on uintptr_t in libgcc

uintptr_t is no available for all targets, use __UINTPTR_TYPE__
instead.

libgcc/ChangeLog:

* unwind-dw2-fde.c: Replace uintptr_t with typedef
for __UINTPTR_TYPE__.
* unwind-dw2-btree.h: Likewise.

2 years agoRISC-V: Don't try to vectorize tree-ssa/gen-vect-34.c
Palmer Dabbelt [Sat, 3 Sep 2022 01:28:10 +0000 (18:28 -0700)]
RISC-V: Don't try to vectorize tree-ssa/gen-vect-34.c

We don't yet support vectorization on RISC-V.

gcc/testsuite/ChangeLog

* gcc.dg/tree-ssa/gen-vect-34.c: Skip RISC-V targets.

2 years ago[PR106831] Avoid propagating long doubles that may have multiple representations.
Jakub Jelinek [Sat, 17 Sep 2022 06:50:22 +0000 (08:50 +0200)]
[PR106831] Avoid propagating long doubles that may have multiple representations.

Long doubles are tricky when it comes to considering singletons
because small numbers and +-INF can have multiple representations for
the same number.  So we need to be very careful not to treat those as
singletons, lest they be incorrectly propagated by VRP.  This is
similar to the -0.0 and +0.0 duality.

In long doubles +INF can be represented with +INF in the MSB and
either -0.0 or +0.0 in the LSB.  Similarly for numbers that are exactly
representable in DF.  For example, 1.0 can be represented as either
(1.0, +0.0) or (1.0, -0.0).

This patch avoids treating these numbers as singletons.

Note that NANs in long double format have a LSB of don't care, but
this is irrelevant for singleton_p, because NANs are never considered
singletons.  Also, internally in the frange we store NANs as a pair of
boolean flags indicating whether they are +NAN or -NAN, so we don't need
any special treatment here for comparing range equality etc.  We never
see anything but the boolean flags.

PR middle-end/106831

gcc/ChangeLog:

* value-range.cc (frange::singleton_p): Avoid propagating long
doubles that may have multiple representations.

2 years agoRewrite NAN and sign handling in frange
Aldy Hernandez [Wed, 14 Sep 2022 06:32:34 +0000 (08:32 +0200)]
Rewrite NAN and sign handling in frange

The attatched patch rewrites the NAN and sign handling, dropping both
tristates in favor of a pair of boolean flags for NANs, and nothing at
all for signs.  The signs are tracked in the range itself, so now it's
possible to describe things like [-0.0, +0.0] +NAN, [+0, +0], [-5, +0],
[+0, 3] -NAN, etc.

Here is an example of the various ranges and how they are displayed:

    [frange] float VARYING NAN ;; Varying includes NAN
    [frange] UNDEFINED                      ;; Empty set as always
    [frange] float [] +-NAN                 ;; Unknown sign NAN
    [frange] float [] -NAN                  ;; -NAN
    [frange] float [] +NAN                  ;; +NAN
    [frange] float [-0.0, 0.0]              ;; All zeros.
    [frange] float [-0.0, -0.0] +-NAN       ;; -0 or NAN.
    [frange] float [-5.0e+0, -1.0e+0] +NAN  ;; [-5, -1] or +NAN
    [frange] float [-5.0e+0, -0.0] +-NAN    ;; [-5, -0] or NAN
    [frange] float [-5.0e+0, -0.0]          ;; [-5, -0]
    [frange] float [5.0e+0, 1.0e+1]         ;; [5, 10]

Notice the NAN signs are decoupled from the range, so we can represent
a negative range with a positive NAN.  For this range,
frange::signbit_p() would return false, as only when the signs of the
NANs and range agree can we be certain.

There is no longer any pessimization of ranges for intersects
involving NANs.  Also, union and intersect work with signed zeros:

//   [-0,  x] U [+0,  x] => [-0,  x]
//   [ x, -0] U [ x, +0] => [ x, +0]
//   [-0,  x] ^ [+0,  x] => [+0,  x]
//   [ x, -0] ^ [ x, +0] => [ x, -0]

The special casing for signed zeros in the singleton code is gone in
favor of just making sure the signs in the range agree, that is
[-0, -0] for example.

I have removed the idea that a known NAN is a "range", so a NAN is no
longer in the endpoints itself.  Requesting the bound of a known NAN
is a hard fail.  For that matter, we don't store the actual NAN in the
range.  The only information we have are the set of boolean flags.
This way we make sure nothing seeps into the frange.  This also means
it's explicit that we don't track anything but the sign in NANs.  We
can revisit this if we desire to track signalling or whatever
concoction y'all can imagine.

Regstrapped with mpfr tests on x86-64 and ppc64le Linux.  Selftests
were also run with -ffinite-math-only on x86-64.

At Jakub's suggestion, I built lapack with associated tests.  They
pass on x86-64 and ppc64le Linux with no regressions from mainline.
As a sanity check, I also ran them for -ffinite-math-only on x86 which
(as expected) returned:

NaN arithmetic did not perform per the ieee spec

Otherwise, all tests pass for -ffinite-math-only.

gcc/ChangeLog:

* range-op-float.cc (frange_add_zeros): Replace set_signbit with
union of zero.
* value-query.cc (range_query::get_tree_range): Remove set_signbit
use.
* value-range-pretty-print.cc (vrange_printer::print_frange_prop):
Remove.
(vrange_printer::print_frange_nan): New.
* value-range-pretty-print.h (print_frange_prop): Remove.
(print_frange_nan): New.
* value-range-storage.cc (frange_storage_slot::set_frange): Set
kind and NAN fields.
(frange_storage_slot::get_frange): Restore kind and NAN fields.
* value-range-storage.h (class frange_storage_slot): Add kind and
NAN fields.
* value-range.cc (frange::update_nan): Remove.
(frange::set_signbit): Remove.
(frange::set): Adjust for NAN fields.
(frange::normalize_kind): Remove m_props.
(frange::combine_zeros): New.
(frange::union_nans): New.
(frange::union_): Handle new NAN fields.
(frange::intersect_nans): New.
(frange::intersect): Handle new NAN fields.
(frange::operator=): Same.
(frange::operator==): Same.
(frange::contains_p): Same.
(frange::singleton_p): Remove special case for signed zeros.
(frange::verify_range): Adjust for new NAN fields.
(frange::set_zero): Handle signed zeros.
(frange::set_nonnegative): Same.
(range_tests_nan): Adjust tests.
(range_tests_signed_zeros): Same.
(range_tests_signbit): Same.
(range_tests_floats): Same.
* value-range.h (class fp_prop): Remove.
(FP_PROP_ACCESSOR): Remove.
(class frange_props): Remove
(frange::lower_bound): NANs don't have endpoints.
(frange::upper_bound): Same.
(frange_props::operator==): Remove.
(frange_props::union_): Remove.
(frange_props::intersect): Remove.
(frange::update_nan): New.
(frange::clear_nan): New.
(frange::undefined_p): New.
(frange::set_nan): New.
(frange::known_finite): Adjust for new NAN representation.
(frange::maybe_isnan): Same.
(frange::known_isnan): Same.
(frange::signbit_p): Same.
* gimple-range-fold.cc (range_of_builtin_int_call): Rename
known_signbit_p into signbit_p.

2 years agoDaily bump.
GCC Administrator [Sun, 18 Sep 2022 00:17:03 +0000 (00:17 +0000)]
Daily bump.

2 years agoFix unsigned comparison warning
Jan-Benedict Glaw [Sat, 17 Sep 2022 13:40:28 +0000 (15:40 +0200)]
Fix unsigned comparison warning

When -mfloat-abi=hard support was added, a cast went missing that
used to silence a warning in common code:

/usr/lib/gcc-snapshot/bin/g++  -fno-PIE -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody  -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace   -o builtins.o -MT builtins.o -MMD -MP -MF ./.deps/builtins.TPo ../../gcc/gcc/builtins.cc
In file included from ./tm.h:21,
                 from ../../gcc/gcc/backend.h:28,
                 from ../../gcc/gcc/builtins.cc:27:
../../gcc/gcc/builtins.cc: In function 'int apply_args_size()':
../../gcc/gcc/config/csky/csky.h:421:13: error: comparison of unsigned expression in '>= 0' is always true [-Werror=type-limits]
  421 |   (((REGNO) >= CSKY_FIRST_PARM_REGNUM                        \
../../gcc/gcc/builtins.cc:1444:13: note: in expansion of macro 'FUNCTION_ARG_REGNO_P'
 1444 |         if (FUNCTION_ARG_REGNO_P (regno))
      |             ^~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[1]: *** [Makefile:1146: builtins.o] Error 1

The needed (int) cast is even mentioned in the comment above, so reinstate
it here.

gcc/ChangeLog:
* config/csky/csky.h (FUNCTION_ARG_REGNO_P): Cast REGNO to (int)
to prevent warning.

2 years agoc++: modules ICE with typename friend
Patrick Palka [Sat, 17 Sep 2022 13:16:53 +0000 (09:16 -0400)]
c++: modules ICE with typename friend

A couple of xtreme-header-* modules tests began ICEing in C++23 mode
ever since r13-2650-g5d84a4418aa962 which introduced into <ranges> a
dependently scoped friend declaration:

  friend /* typename */ _OuterIter::value_type;

This happens because the streaming code assumes a TYPE_P friend must
be a class type, but here it's a TYPENAME_TYPE, which doesn't have
a TEMPLATE_INFO or CLASSTYPE_BEFRIENDING_CLASSES.  This patch tries
to correct this in a minimal way.

gcc/cp/ChangeLog:

* module.cc (friend_from_decl_list): Don't consider
CLASSTYPE_TEMPLATE_INFO for a TYPENAME_TYPE friend.
(trees_in::read_class_def): Don't add to
CLASSTYPE_BEFRIENDING_CLASSES for a TYPENAME_TYPE friend.

gcc/testsuite/ChangeLog:

* g++.dg/modules/typename-friend_a.C: New test.
* g++.dg/modules/typename-friend_b.C: New test.

2 years agoreassoc: Fix up recent regression in optimize_range_tests_cmp_bitwise [PR106958]
Jakub Jelinek [Sat, 17 Sep 2022 06:18:24 +0000 (08:18 +0200)]
reassoc: Fix up recent regression in optimize_range_tests_cmp_bitwise [PR106958]

As the following testcase reduced from glibc fmtmsg.c shows
(it doesn't ICE on x86_64/i686 unfortunately, but does on various other
arches), my last optimize_range_tests_cmp_bitwise change wasn't fully
correct.  The intent was to let all pointer operands be cast to
pointer_sized_int_node first in addition to the other casts (to type1)
which are done for id >= l cases.
But one spot I've touched used always cast to type1 (note, the (b % 4) == 3
case is impossible for pointer operands because that is for !TYPE_UNSIGNED
operands and pointers are TYPE_UNSIGNED) and in the other spot the cast
would be done only for id >= l if not useless, but for pointers we need
to cast it always.

2022-09-17  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/106958
* tree-ssa-reassoc.cc (optimize_range_tests_cmp_bitwise): If
id >= l, cast op to type1, otherwise to pointer_sized_int_node.
If type has pointer type, cast exp to pointer_sized_int_node
even when id < l.

* gcc.c-torture/compile/pr106958.c: New test.

2 years agoDaily bump.
GCC Administrator [Sat, 17 Sep 2022 00:17:20 +0000 (00:17 +0000)]
Daily bump.

2 years agoFix for an AutoFDO test.
Eugene Rozenfeld [Fri, 16 Sep 2022 23:25:25 +0000 (16:25 -0700)]
Fix for an AutoFDO test.

After https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=c17975d81aaed49ff759c20c68b31304a6953d58
the expected inlining in indir-call--prof-2.c test happens during afdo phase instead of einline.
This patch adjusts the test accordingly.

gcc/testsuite/ChangeLog:

* gcc.dg/tree-prof/indir-call-prof-2.c: Fix dg-final-use-autofdo.

2 years agoeliminate mutex in fast path of __register_frame
Thomas Neumann [Tue, 1 Mar 2022 20:57:35 +0000 (21:57 +0100)]
eliminate mutex in fast path of __register_frame

The __register_frame/__deregister_frame functions are used to register
unwinding frames from JITed code in a sorted list. That list itself
is protected by object_mutex, which leads to terrible performance
in multi-threaded code and is somewhat expensive even if single-threaded.
There was already a fast-path that avoided taking the mutex if no
frame was registered at all.

This commit eliminates both the mutex and the sorted list from
the atomic fast path, and replaces it with a btree that uses
optimistic lock coupling during lookup. This allows for fully parallel
unwinding and is essential to scale exception handling to large
core counts.

libgcc/ChangeLog:

* unwind-dw2-fde.c (release_registered_frames): Cleanup at shutdown.
(__register_frame_info_table_bases): Use btree in atomic fast path.
(__deregister_frame_info_bases): Likewise.
(_Unwind_Find_FDE): Likewise.
(base_from_object): Make parameter const.
(classify_object_over_fdes): Add query-only mode.
(get_pc_range): Compute PC range for lookup.
* unwind-dw2-fde.h (last_fde): Make parameter const.
* unwind-dw2-btree.h: New file.

2 years agolibstdc++: Add preprocessor conditions for freestanding [PR106953]
Jonathan Wakely [Thu, 15 Sep 2022 20:02:32 +0000 (21:02 +0100)]
libstdc++: Add preprocessor conditions for freestanding [PR106953]

This adds checks for _GLIBCXX_HOSTED to a number of headers which are
not currently installed for freestanding, but need to be for P1642R11
support. For example, <iterator> needs to be installed for C++23
freestanding mode, but without stream iterators and streambuf iterators.
Similarly, <memory> needs to be installed, but without std::allocator
and std::shared_ptr. This change disables the non-freestanding parts of
those headers.

libstdc++-v3/ChangeLog:

PR libstdc++/106953
* include/backward/auto_ptr.h [!_GLIBCXX_HOSTED]: Do not define
shared_ptr members.
* include/bits/alloc_traits.h [!_GLIBCXX_HOSTED]: Do not declare
std::allocator_traits<std::allocator<T>> specializations for
freestanding.
* include/bits/memoryfwd.h [!_GLIBCXX_HOSTED] (allocator): Do
not declare for freestanding.
* include/bits/stl_algo.h [!_GLIBCXX_HOSTED] (stable_partition):
Do not define for freestanding.
[!_GLIBCXX_HOSTED] (merge, stable_sort): Do not use temporary
buffers for freestanding.
* include/bits/stl_algobase.h [!_GLIBCXX_HOSTED]: Do not declare
streambuf iterators and overloaded algorithms using them.
* include/bits/stl_uninitialized.h [!_GLIBCXX_HOSTED]: Do not
define specialized overloads for std::allocator.
* include/bits/unique_ptr.h [!_GLIBCXX_HOSTED] (make_unique)
(make_unique_for_overwrite, operator<<): Do not define for
freestanding.
* include/c_global/cstdlib [!_GLIBCXX_HOSTED] (_Exit): Declare.
Use _GLIBCXX_NOTHROW instead of throw().
* include/debug/assertions.h [!_GLIBCXX_HOSTED]: Ignore
_GLIBCXX_DEBUG for freestanding.
* include/debug/debug.h [!_GLIBCXX_DEBUG]: Likewise.
* include/std/bit [!_GLIBCXX_HOSTED]: Do not use the custom
__int_traits if <ext/numeric_traits.h> is available.
* include/std/functional [!_GLIBCXX_HOSTED]: Do not include
headers that aren't valid for freestanding.
(boyer_moore_searcher, boyer_moore_horspool_searcher): Do not
define for freestanding.
* include/std/iterator [!_GLIBCXX_HOSTED]: Do not include
headers that aren't valid for freestanding.
* include/std/memory [!_GLIBCXX_HOSTED]: Likewise.
* include/std/ranges [!_GLIBCXX_HOSTED] (istream_view): Do not
define for freestanding.
(views::__detail::__is_basic_string_view) [!_GLIBCXX_HOSTED]:
Do not define partial specialization for freestanding.

2 years agolibstdc++: Move allocator-related helpers to <bits/alloc_traits.h>
Jonathan Wakely [Fri, 16 Sep 2022 20:29:44 +0000 (21:29 +0100)]
libstdc++: Move allocator-related helpers to <bits/alloc_traits.h>

The __alloc_swap and __shrink_to_fit_aux helpers are not specific to
std::allocator, so don't belong in <bits/allocator.h>. This also
simplifies enabling <memory> for freestanding, as now we can just omit
the whole of <bits/allocator.h> for freestanding.

libstdc++-v3/ChangeLog:

* include/bits/alloc_traits.h (__alloc_swap)
(__shrink_to_fit_aux): Move here, from ...
* include/bits/allocator.h: ... here.
* include/ext/alloc_traits.h: Do not include allocator.h.

2 years agolibstdc++: Make more internal headers include their own dependencies
Jonathan Wakely [Fri, 16 Sep 2022 09:49:54 +0000 (10:49 +0100)]
libstdc++: Make more internal headers include their own dependencies

This adds required headers to a few internal headers that currently
assume their deps will be included first. It's more robust to make them
include their own dependencies, so that later refactoring or reuse of
those headers in new contexts doesn't break.

libstdc++-v3/ChangeLog:

* include/bits/stl_algo.h: Include <bits/stl_algobase.h>.
* include/bits/stl_tempbuf.h: Include headers for __try and
__catch macros, std::pair, and __gnu_cxx::__numeric_traits.
* include/bits/stream_iterator.h: Include <iosfwd> and headers
for std::addressof and std::iterator.
* include/bits/streambuf_iterator.h: Include header for
std::iterator.
* include/std/iterator: Do not include <iosfwd>.

2 years agolibstdc++: Fix compare_exchange_padding.cc test for std::atomic_ref
Jonathan Wakely [Fri, 16 Sep 2022 16:50:21 +0000 (17:50 +0100)]
libstdc++: Fix compare_exchange_padding.cc test for std::atomic_ref

This test was written assuming that std::atomic_ref clears its target's
padding on construction, but that could introduce data races. Change the
test to store a value after construction and check that its padding is
cleared by the store.

libstdc++-v3/ChangeLog:

* testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
Store value with non-zero padding bits after construction.

2 years agoc++: 'mutable' member within constexpr [PR92505]
Patrick Palka [Fri, 16 Sep 2022 15:10:43 +0000 (11:10 -0400)]
c++: 'mutable' member within constexpr [PR92505]

This patch permits accessing 'mutable' members of local objects during
constexpr evaluation, while continuing to reject it for global objects
(as in the last line of cpp0x/constexpr-mutable1.C).  To distinguish
between the two cases, it looks like it suffices to just check
CONSTRUCTOR_MUTABLE_POSION in cxx_eval_component_reference before
deciding to reject a DECL_MUTABLE_P member access.

PR c++/92505

gcc/cp/ChangeLog:

* constexpr.cc (cxx_eval_component_reference): Check non_constant_p
sooner.  In C++14 or later, reject a DECL_MUTABLE_P member access
only if CONSTRUCTOR_MUTABLE_POISION is also set.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/constexpr-mutable3.C: New test.
* g++.dg/cpp1y/constexpr-mutable1.C: New test.

2 years agolibstdc++: Fix tr1::variate_generator::engine_value_type
Jonathan Wakely [Fri, 16 Sep 2022 14:40:06 +0000 (15:40 +0100)]
libstdc++: Fix tr1::variate_generator::engine_value_type

The tr1/5_numerical_facilities/random/variate_generator/37986.cc test
fails for strict -std=c++98 mode because _Adaptor(const _Engine&) is
ill-formed in C++98 when _Engine is a reference type.

Rather than attempt to make the _Adaptor handle references and pointers,
just strip references and pointers from the _Engine type before we adapt
it. That removes the need for the _Adaptor<_Engine*> partial
specialization and avoids the reference-to-reference problem for c++98
mode.

While looking into this I noticed that the TR1 spec requires the
variate_generator<E,D>::engine_value_type to be the underlying engine
type, whereas we make it the _Adaptor<E> type that wraps the engine.

libstdc++-v3/ChangeLog:

* include/tr1/random.h (__detail::_Adaptor::_BEngine): Remove.
(__detail::_Adaptor::_M_g): Make public.
(__detail::_Adaptor<_Engine*, _Dist>): Remove partial
specialization.
(variate_generate::_Value): New helper to simplify handling of
_Engine* and _Engine& template arguments.
(variate_generate::engine_value_type): Define to underlying
engine type, not adapted type.
(variate_generate::engine()): Return underlying engine instead
of adaptor.
* testsuite/tr1/5_numerical_facilities/random/variate_generator/37986.cc:
Fix comment.
* testsuite/tr1/5_numerical_facilities/random/variate_generator/requirements/typedefs.cc:
Check member typedefs have the correct types.

2 years agolibstdc++: Do not use nullptr in C++03-compatible code
Jonathan Wakely [Fri, 16 Sep 2022 13:27:43 +0000 (14:27 +0100)]
libstdc++: Do not use nullptr in C++03-compatible code

This has to be valid as C++98/C++03.

libstdc++-v3/ChangeLog:

* include/debug/formatter.h [_GLIBCXX_DEBUG_BACKTRACE]
(_Error_formatter): Use 0 as null pointer constant.

2 years agolibstdc++: Remove __alloc_neq helper
Jonathan Wakely [Fri, 16 Sep 2022 10:39:41 +0000 (11:39 +0100)]
libstdc++: Remove __alloc_neq helper

This class template and partial specialization were added 15 years ago
to optimize allocator equality comparisons in std::list. I think it's
safe to assume that GCC is now capable of optimizing an inline
operator!= that just returns false at least as well as an inline member
function that just returns false.

libstdc++-v3/ChangeLog:

* include/bits/allocator.h (__alloc_neq): Remove.
* include/bits/stl_list.h (list::_M_check_equal_allocators):
Compare allocators directly, without __alloc_neq.

2 years agolibstdc++: Fix Doxygen commands
Jonathan Wakely [Fri, 16 Sep 2022 10:36:41 +0000 (11:36 +0100)]
libstdc++: Fix Doxygen commands

Remove the bogus -D__allocator_base=std::__new_allocator macro
definition for Doxygen, because that's an alias template for C++11 and
later, not a macro.

Fix the @cond/@endcond pair that span the end of an @addtogroup group.
Add another @endcond inside the group, and another @cond after it.

libstdc++-v3/ChangeLog:

* doc/doxygen/user.cfg.in (PREDEFINED): Remove __allocator_base.
* include/bits/allocator.h: Fix nesting of Doxygen commands.

2 years agoc++: member fn in omp loc list [PR106858]
Jason Merrill [Thu, 15 Sep 2022 20:55:50 +0000 (22:55 +0200)]
c++: member fn in omp loc list [PR106858]

this-f names a member function, which isn't an addressable lvalue.  Give a
helpful error instead of crashing.  The first hunk makes the error range
cover the whole expression.

PR c++/106858

gcc/cp/ChangeLog:

* parser.cc (cp_parser_omp_var_list_no_open): Pass the
initial token location down.
* semantics.cc (finish_omp_clauses): Check
invalid_nonstatic_memfn_p.
* typeck.cc (invalid_nonstatic_memfn_p): Handle null TREE_TYPE.

gcc/testsuite/ChangeLog:

* g++.dg/gomp/map-3.C: New test.

2 years agolibstdc++: Document new libstdc++.so symbol versions
Jonathan Wakely [Fri, 16 Sep 2022 09:16:04 +0000 (10:16 +0100)]
libstdc++: Document new libstdc++.so symbol versions

libstdc++-v3/ChangeLog:

* doc/xml/manual/abi.xml: Document GLIBCXX_3.4.30 and
GLIBCXX_3.4.31 versions.
* doc/html/manual/abi.html: Regenerate.

2 years agoModernize ix86_builtin_vectorized_function with corresponding expanders.
liuhongt [Thu, 15 Sep 2022 10:43:16 +0000 (18:43 +0800)]
Modernize ix86_builtin_vectorized_function with corresponding expanders.

For ifloor/lfloor/iceil/lceil/irint/lrint/iround/lround when size of
in_mode is not equal out_mode, vectorizer doesn't go to internal fn
way,still left that part in the ix86_builtin_vectorized_function.

Remove others builtins and add corresponding expanders.

gcc/ChangeLog:

PR target/106910
* config/i386/i386-builtins.cc
(ix86_builtin_vectorized_function): Modernized with
corresponding expanders.
* config/i386/sse.md (lrint<mode><sseintvecmodelower>2): New
expander.
(floor<mode>2): Ditto.
(lfloor<mode><sseintvecmodelower>2): Ditto.
(ceil<mode>2): Ditto.
(lceil<mode><sseintvecmodelower>2): Ditto.
(btrunc<mode>2): Ditto.
(lround<mode><sseintvecmodelower>2): Ditto.
(exp2<mode>2): Ditto.

2 years agoDaily bump.
GCC Administrator [Fri, 16 Sep 2022 00:16:53 +0000 (00:16 +0000)]
Daily bump.

2 years agolibstdc++: Remove unnecessary header from <memory>
Jonathan Wakely [Thu, 15 Sep 2022 17:21:32 +0000 (18:21 +0100)]
libstdc++: Remove unnecessary header from <memory>

Previously <memory> included <bits/stl_algobase.h> so that std::copy,
std::fill etc. could be used by <bits/stl_uninitialized.h>. But that
includes it explicitly now, so that it can be compiled as a header unit.
There's no need to include it in <memory>, where its purpose isn't
obvious.

libstdc++-v3/ChangeLog:

* include/std/memory: Do not include <bits/stl_algobase.h>.

2 years agoFortran: catch NULL pointer dereferences while simplifying PACK [PR106857]
Harald Anlauf [Thu, 15 Sep 2022 20:39:24 +0000 (22:39 +0200)]
Fortran: catch NULL pointer dereferences while simplifying PACK [PR106857]

gcc/fortran/ChangeLog:

PR fortran/106857
* simplify.cc (gfc_simplify_pack): Check for NULL pointer dereferences
while walking through constructors (error recovery).

gcc/testsuite/ChangeLog:

PR fortran/106857
* gfortran.dg/pr106857.f90: New test.

2 years agoFortran: error recovery for bad deferred character length assignment [PR104314]
Harald Anlauf [Thu, 15 Sep 2022 20:06:53 +0000 (22:06 +0200)]
Fortran: error recovery for bad deferred character length assignment [PR104314]

gcc/fortran/ChangeLog:

PR fortran/104314
* resolve.cc (deferred_op_assign): Do not try to generate temporary
for deferred character length assignment if types do not agree.

gcc/testsuite/ChangeLog:

PR fortran/104314
* gfortran.dg/pr104314.f90: New test.

Co-authored-by: Steven G. Kargl <kargl@gcc.gnu.org>
2 years agofloat.h: Do not define INFINITY for C2x when infinities not supported
Joseph Myers [Thu, 15 Sep 2022 20:10:42 +0000 (20:10 +0000)]
float.h: Do not define INFINITY for C2x when infinities not supported

C2x has changed the rules for defining INFINITY in <float.h> so it is
no longer defined when float does not support infinities, instead of
being defined to an expression that overflows at translation time.
Thus, make the definition conditional on __FLT_HAS_INFINITY__ (this is
already inside a C2x-conditional part of <float.h>, because previous C
standard versions only had this macro in <math.h>).

Bootstrapped with no regressions for x86_64-pc-linux-gnu.  Also did a
spot test of the case of no infinities supported by building cc1 for
vax-netbsdelf and testing compiling the new c2x-float-11.c test with
it.

gcc/
* ginclude/float.h (INFINITY): Define only if
[__FLT_HAS_INFINITY__].

gcc/testsuite/
* gcc.dg/c2x-float-2.c: Require inff effective-target.
* gcc.dg/c2x-float-11.c: New test.

2 years agolibstdc++: Tweak TSan annotations for std::atomic<shared_ptr<T>>
Jonathan Wakely [Thu, 15 Sep 2022 15:57:30 +0000 (16:57 +0100)]
libstdc++: Tweak TSan annotations for std::atomic<shared_ptr<T>>

Do not use the __tsan_mutex_not_static flag for annotation functions
where it's not a valid flag.  Also use the try_lock and try_lock_failed
flags to more precisely annotate the CAS loop used to acquire a lock.

libstdc++-v3/ChangeLog:

* include/bits/shared_ptr_atomic.h (_GLIBCXX_TSAN_MUTEX_PRE_LOCK):
Replace with ...
(_GLIBCXX_TSAN_MUTEX_TRY_LOCK): ... this, add try_lock flag.
(_GLIBCXX_TSAN_MUTEX_TRY_LOCK_FAILED): New macro using
try_lock_failed flag
(_GLIBCXX_TSAN_MUTEX_POST_LOCK): Rename to ...
(_GLIBCXX_TSAN_MUTEX_LOCKED): ... this.
(_GLIBCXX_TSAN_MUTEX_PRE_UNLOCK): Remove invalid flag.
(_GLIBCXX_TSAN_MUTEX_POST_UNLOCK): Remove invalid flag.
(_Sp_atomic::_Atomic_count::lock): Use new macros.

2 years agolibstdc++: Implement ranges::chunk_by_view from P2443R1
Patrick Palka [Thu, 15 Sep 2022 17:16:51 +0000 (13:16 -0400)]
libstdc++: Implement ranges::chunk_by_view from P2443R1

libstdc++-v3/ChangeLog:

* include/bits/ranges_algo.h (__adjacent_find_fn, adjacent_find):
Move to ...
* include/bits/ranges_util.h: ... here.
* include/std/ranges (chunk_by_view): Define.
(chunk_by_view::_Iterator): Define.
(__detail::__can_chunk_by_view): Define.
(_ChunkBy, chunk_by): Define.
* testsuite/std/ranges/adaptors/chunk_by/1.cc: New test.

2 years agolibstdc++: [_GLIBCXX_INLINE_VERSION] Fix test dg-prune-output
François Dumont [Wed, 14 Sep 2022 17:14:48 +0000 (19:14 +0200)]
libstdc++: [_GLIBCXX_INLINE_VERSION] Fix test dg-prune-output

libstdc++-v3/ChangeLog:

* testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc:
Adapt dg-prune-output to _GLIBCXX_INLINE_VERSION mode.

2 years agolibstdc++: [_GLIBCXX_INLINE_VERSION] Cleanup gnu-versioned-namespace.ver
François Dumont [Wed, 14 Sep 2022 17:11:51 +0000 (19:11 +0200)]
libstdc++: [_GLIBCXX_INLINE_VERSION] Cleanup gnu-versioned-namespace.ver

Remove expressions for symbols in std::__detail::__8 namespace, they are obsolete since
version namespace applies only at std:: level, not at sub-levels.

libstdc++-v3/ChangeLog:

* config/abi/pre/gnu-versioned-namespace.ver: Remove obsolete std::__detail::__8
symbols.

2 years agoMAINTAINERS: Add myself to Write After Approval
Torbjörn SVENSSON [Thu, 15 Sep 2022 12:42:13 +0000 (14:42 +0200)]
MAINTAINERS: Add myself to Write After Approval

ChangeLog:

* MAINTAINERS (Write After Approval): Add myself.

2 years agotree-optimization/106922 - PRE and virtual operand translation
Richard Biener [Thu, 15 Sep 2022 11:33:23 +0000 (13:33 +0200)]
tree-optimization/106922 - PRE and virtual operand translation

PRE implicitely keeps virtual operands at the blocks incoming version
but the explicit updating point during PHI translation fails to trigger
when there are no PHIs at all in a block.  Later lazy updating then
fails because of a too lose block check.  A similar issues plagues
reference invalidation when checking the ANTIC_OUT to ANTIC_IN
translation.  The following fixes both and makes the lazy updating
work.

The diagnostic testcase unfortunately requires boost so the
testcase is the one I reduced for a missed optimization in PRE.
The testcase fails with -m32 on x86_64 because we optimize too
much before PRE which causes PRE to not trigger so we fail to
eliminate a full redundancy.  I'm going to open a separate bug
for this.  Hopefully the !lp64 selector is good enough.

PR tree-optimization/106922
* tree-ssa-pre.cc (translate_vuse_through_block): Only
keep the VUSE if its def dominates PHIBLOCK.
(prune_clobbered_mems): Rewrite logic so we check whether
a value dies in a block when the VUSE def doesn't dominate it.

* g++.dg/tree-ssa/pr106922.C: New testcase.

2 years agoMove void_list_node init to common code
Richard Biener [Wed, 14 Sep 2022 13:59:37 +0000 (15:59 +0200)]
Move void_list_node init to common code

All frontends replicate this, so move it.

gcc/
* tree.cc (build_common_tree_nodes): Initialize void_list_node
here.

gcc/ada/
* gcc-interface/trans.cc (gigi): Do not initialize void_list_node.

gcc/c-family/
* c-common.h (build_void_list_node): Remove.
* c-common.cc (c_common_nodes_and_builtins): Do not initialize
void_list_node.

gcc/c/
* c-decl.cc (build_void_list_node): Remove.

gcc/cp/
* decl.cc (cxx_init_decl_processing): Inline last
build_void_list_node call.
(build_void_list_node): Remove.

gcc/d/
* d-builtins.cc (d_build_c_type_nodes): Do not initialize
void_list_node.

gcc/fortran/
* f95-lang.cc (gfc_init_decl_processing): Do not initialize
void_list_node.

gcc/go/
* go-lang.cc (go_langhook_init): Do not initialize
void_list_node.

gcc/jit/
* dummy-frontend.cc (jit_langhook_init): Do not initialize
void_list_node.

gcc/lto/
* lto-lang.cc (lto_build_c_type_nodes): Do not initialize
void_list_node.

2 years agoFix c-c++-common/gomp/target-50.c test
Julian Brown [Thu, 15 Sep 2022 12:01:28 +0000 (12:01 +0000)]
Fix c-c++-common/gomp/target-50.c test

The expected scan dump output for this test will change after the
following patch is committed:

  https://gcc.gnu.org/pipermail/gcc-patches/2022-September/601558.html

But for now, this patch reverts to the old expected pattern so the test
passes. I will apply as obvious.

2022-09-15  Julian Brown  <julian@codesourcery.com>

gcc/testsuite/
* c-c++-common/gomp/target-50.c: Modify scan pattern.

2 years agoFix c-c++-common/goacc/mdc-2.c and g++.dg/goacc/mdc.C tests
Julian Brown [Thu, 15 Sep 2022 11:32:36 +0000 (11:32 +0000)]
Fix c-c++-common/goacc/mdc-2.c and g++.dg/goacc/mdc.C tests

These testsuite hunks got left attached to the wrong patch in the series
I just posted. I will apply as obvious.

2022-09-15  Julian Brown  <julian@codesourcery.com>

gcc/testsuite/
* c-c++-common/goacc/mdc-2.c: Update expected errors.
* g++.dg/goacc/mdc.C: Likewise.

2 years agors6000: Using pli(paddi) and rotate to build 64bit constants
Jiufu Guo [Mon, 5 Sep 2022 05:36:10 +0000 (13:36 +0800)]
rs6000: Using pli(paddi) and rotate to build 64bit constants

Hi,

Test cases are updated/added, and code is refined as the comments in the
review for previous version:
https://gcc.gnu.org/pipermail/gcc-patches/2022-September/600768.html

As mentioned in PR106550, since pli could support 34bits immediate, we could
use less instructions(3insn would be ok) to build 64bits constant with pli.

For example, for constant 0x020805006106003, we could generate it with:
asm code1:
pli 9,101736451 (0x6106003)
sldi 9,9,32
paddi 9,9, 2130000 (0x0208050)

or asm code2:
pli 10, 2130000
pli 9, 101736451
rldimi 9, 10, 32, 0

The asm code2 would be better.
This patch generates the asm code2 in split1 pass, this patch also supports
to generate asm code1 when splitter is only after RA.

This patch pass boostrap and regtest on ppc64. P10 testing is running.
Thanks for any comments!

BR,
Jeff(Jiufu)

PR target/106550

gcc/ChangeLog:

* config/rs6000/rs6000.cc (rs6000_emit_set_long_const): Use pli.

gcc/testsuite/ChangeLog:

* gcc.target/powerpc/pr106550.c: New test.
* gcc.target/powerpc/pr106550_1.c: New test.

2 years agoDaily bump.
GCC Administrator [Thu, 15 Sep 2022 00:17:35 +0000 (00:17 +0000)]
Daily bump.

2 years agolibstdc++: Add TSan annotations to std::atomic<shared_ptr<T>>
Jonathan Wakely [Wed, 14 Sep 2022 18:11:22 +0000 (19:11 +0100)]
libstdc++: Add TSan annotations to std::atomic<shared_ptr<T>>

This adds annotations to std::atomic<shared_ptr<T>> to enable TSan to
understand the custom locking. Without this, TSan reports data races for
accesses to the _M_ptr member, even though those are correctly
synchronized using atomic operations on the tagged pointer.

libstdc++-v3/ChangeLog:

* include/bits/shared_ptr_atomic.h (_GLIBCXX_TSAN_MUTEX_DESTROY)
(_GLIBCXX_TSAN_MUTEX_PRE_LOCK, _GLIBCXX_TSAN_MUTEX_POST_LOCK)
(_GLIBCXX_TSAN_MUTEX_PRE_UNLOCK, _GLIBCXX_TSAN_MUTEX_POST_UNLOCK)
(_GLIBCXX_TSAN_MUTEX_PRE_SIGNAL, _GLIBCXX_TSAN_MUTEX_POST_SIGNAL):
Define macros for TSan annotation functions.
(_Sp_atomic::_Atomic_count): Add annotations.

2 years agolibstdc++: Add missing <new> header to <bits/stl_tempbuf.h>
Jonathan Wakely [Wed, 14 Sep 2022 14:52:44 +0000 (15:52 +0100)]
libstdc++: Add missing <new> header to <bits/stl_tempbuf.h>

This is needed for std::nothrow and the nothrow operator new overload,
so should be included explicitly.

libstdc++-v3/ChangeLog:

* include/bits/stl_tempbuf.h: Include <new>.

2 years agolibstdc++: Add comment to 17_intro/names.cc test
Jonathan Wakely [Wed, 14 Sep 2022 13:16:25 +0000 (14:16 +0100)]
libstdc++: Add comment to 17_intro/names.cc test

libstdc++-v3/ChangeLog:

* testsuite/17_intro/names.cc: Explain why poison pragma can't
be used.

2 years agolibstdc++: Add assertion to std::promise::set_exception (LWG 2276)
Jonathan Wakely [Wed, 14 Sep 2022 13:03:19 +0000 (14:03 +0100)]
libstdc++: Add assertion to std::promise::set_exception (LWG 2276)

Without this assertion, the shared state is made ready, but contains
neither a value nor an exception. Add an assertion to prevent users from
accessing a value that was never initialized in the shared state.

libstdc++-v3/ChangeLog:

* include/std/future
(_State_baseV2::__setter(exception_ptr&, promise&)): Add
assertion for LWG 2276 precondition.
* testsuite/30_threads/promise/members/set_exception_neg.cc:
New test.

2 years agolibstdc++: Document LWG 1203 API change in manual
Jonathan Wakely [Wed, 14 Sep 2022 12:48:25 +0000 (13:48 +0100)]
libstdc++: Document LWG 1203 API change in manual

libstdc++-v3/ChangeLog:

* doc/xml/manual/intro.xml: Document LWG 1203.
* doc/html/*: Regenerate.

2 years agolibstdc++: Add pretty printer for std::stringstreams
Philipp Fent [Tue, 6 Sep 2022 21:24:29 +0000 (23:24 +0200)]
libstdc++: Add pretty printer for std::stringstreams

To display (o-,i-)stringstreams in the common case, we just print the
underlying stringbuf, without the many ios_base members. In the
unconventional case that the underlying streambuf was redirected, we
report the redirected target.

Signed-off-by: Philipp Fent <fent@in.tum.de>
libstdc++-v3/ChangeLog:

* python/libstdcxx/v6/printers.py (access_streambuf_ptrs):
New helper function.
(StdStringBufPrinter, StdStringStreamPrinter): New printers.
(build_libstdcxx_dictionary): Register stringstream printers.
* testsuite/libstdc++-prettyprinters/debug.cc: Check string
streams.
* testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
* testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.

2 years agofrange: add both zeros to ranges when there's the possiblity of equality.
Aldy Hernandez [Wed, 14 Sep 2022 06:11:54 +0000 (08:11 +0200)]
frange: add both zeros to ranges when there's the possiblity of equality.

Every time there's equality at play, we must be careful that any
equality with zero matches both -0.0 and +0.0 when honoring signed
zeros.

We were doing this correctly for the == and != op1_range operators
(albeit inefficiently), but aren't doing it at all when building >=
and <=.  This fixes the oversight.

There is change in functionality here for the build_* functions.

This is the last "simple" patch I submit before overhauling NAN and
sign tracking.  And that will likely be after Cauldron because it will need
further testing (lapack, ppc64le, -ffinite-math-only, etc).

Regstrapped on x86-64 Linux, plus I ran selftests for
-ffinite-math-only.

gcc/ChangeLog:

* range-op-float.cc (frange_add_zeros): New.
(build_le): Call frange_add_zeros.
(build_ge): Same.
(foperator_equal::op1_range): Same.
(foperator_not_equal::op1_range): Same.

2 years agoPass full range to build_* in range-op-float.cc
Aldy Hernandez [Wed, 14 Sep 2022 06:01:16 +0000 (08:01 +0200)]
Pass full range to build_* in range-op-float.cc

The build_<relop> helper functions in range-op-float.cc take the
actual value from the operand's endpoint, but this value could be
deduced from the operand itself therefore cleaning up the call site.
This also reduces the potential of mistakenly passing the wrong bound.

No functional changes.

Regstrapped on x86-64 Linux, plus I ran selftests for
-ffinite-math-only.

gcc/ChangeLog:

* range-op-float.cc (build_le): Accept frange instead of number.
(build_lt): Same.
(build_ge): Same.
(build_gt): Same.
(foperator_lt::op1_range): Pass full range to build_*.
(foperator_lt::op2_range): Same.
(foperator_le::op1_range): Same.
(foperator_le::op2_range): Same.
(foperator_gt::op1_range): Same.
(foperator_gt::op2_range): Same.
(foperator_ge::op1_range): Same.
(foperator_ge::op2_range): Same.

2 years agoUse frange::set_nan() from the generic frange::set().
Aldy Hernandez [Wed, 14 Sep 2022 06:29:54 +0000 (08:29 +0200)]
Use frange::set_nan() from the generic frange::set().

This patch cleans up the frange::set() code by passing all things NAN
to frange::set_nan().

No functional changes.

Regstrapped on x86-64 Linux, plus I ran selftests for
-ffinite-math-only.

gcc/ChangeLog:

* value-range.cc (frange::set): Use set_nan.
* value-range.h (frange::set_nan): Inline code originally in
set().

2 years agoProvide cleaner set_nan(), clear_nan(), and update_nan() methods.
Aldy Hernandez [Wed, 14 Sep 2022 04:58:35 +0000 (06:58 +0200)]
Provide cleaner set_nan(), clear_nan(), and update_nan() methods.

set_* has a very specific meaning for irange's and friends.  Methods
prefixed with set_* are setters clobbering the existing range.  As
such, the current set_nan() method is confusing in that it's not
actually setting a range to a NAN, but twiddling the NAN flags for an
existing frange.

This patch replaces set_nan() with an update_nan() to set the flag,
and clear_nan() to clear it.  This makes the code clearer, and though
the confusing tristate is still there, it will be removed in upcoming
patches.

Also, there is now an actual set_nan() method to set the range to a
NAN.  This replaces two out of class functions doing the same thing.
In future patches I will also add the ability to create a NAN with a
specific sign, but doing so now would be confusing because we're not
tracking NAN signs.

We should also submit set_signbit to the same fate, but it's about to
get removed.

No functional changes.

Regstrapped on x86-64 Linux, plus I ran selftests for
-ffinite-math-only.

gcc/ChangeLog:

* range-op-float.cc (frange_set_nan): Remove.
(build_lt): Use set_nan, update_nan, clear_nan.
(build_gt): Same.
(foperator_equal::op1_range): Same.
(foperator_not_equal::op1_range): Same.
(foperator_lt::op1_range): Same.
(foperator_lt::op2_range): Same.
(foperator_le::op1_range): Same.
(foperator_le::op2_range): Same.
(foperator_gt::op1_range): Same.
(foperator_gt::op2_range): Same.
(foperator_ge::op1_range): Same.
(foperator_ge::op2_range): Same.
(foperator_unordered::op1_range): Same.
(foperator_ordered::op1_range): Same.
* value-query.cc (range_query::get_tree_range): Same.
* value-range.cc (frange::set_nan): Same.
(frange::update_nan): Same.
(frange::union_): Same.
(frange::intersect): Same.
(range_tests_nan): Same.
(range_tests_signed_zeros): Same.
(range_tests_signbit): Same.
(range_tests_floats): Same.
* value-range.h (class frange): Add update_nan and clear_nan.
(frange::set_nan): New.

2 years agoMinor fixes to frange.
Aldy Hernandez [Wed, 14 Sep 2022 05:49:55 +0000 (07:49 +0200)]
Minor fixes to frange.

Following are a series of cleanups to the frange code in preparation
for a much more invasive patch rewriting the NAN and sign tracking
bits.  Please be patient, as I'm trying to break everything up into
small chunks instead of dropping a mondo patch removing the NAN and
sign tristate handling.

No functional changes.

Regstrapped on x86-64 Linux, plus I ran selftests for
-ffinite-math-only.

gcc/ChangeLog:

* value-query.cc (range_query::get_tree_range): Remove check for overflow.
* value-range-pretty-print.cc (vrange_printer::visit): Move read
of type until after undefined_p is checked.
* value-range.cc (frange::set): Remove asserts for REAL_CST.
(frange::contains_p): Tidy up.
(range_tests_nan):  Add comment.
* value-range.h (frange::type): Check for undefined_p.
(frange::set_undefined): Remove set of endpoints.

2 years agoOpenMP/OpenACC: mapping group list-handling improvements
Julian Brown [Tue, 6 Sep 2022 22:34:38 +0000 (22:34 +0000)]
OpenMP/OpenACC: mapping group list-handling improvements

This patch adjusts OpenMP/OpenACC clause list handling in a couple of
places, in preparation for the following mapping-clause expansion rework
patch. Firstly mapping groups are removed as a whole in the C and C++
front-ends when an error is detected, which avoids leaving "badly-formed"
mapping clause groups in the list.

Secondly, reindexing of the omp_mapping_group hashmap (during
omp_build_struct_sibling_lists) has been reimplemented, fixing some
tricky corner-cases where mapping groups are removed from a list at the
same time as it is being reordered.

Thirdly, code to check if a different clause on the same directive maps
the whole of a struct that we have a component mapping for (for example)
has been outlined, removing a bit of code duplication.

2022-09-13  Julian Brown  <julian@codesourcery.com>

gcc/
* gimplify.cc (omp_group_last): Allow GOMP_MAP_ATTACH_DETACH after
GOMP_MAP_STRUCT (for reindexing).
(omp_gather_mapping_groups): Reimplement using...
(omp_gather_mapping_groups_1): This new function.  Stop processing at
GATHER_SENTINEL.
(omp_group_base): Allow GOMP_MAP_TO_PSET without any following node.
(omp_index_mapping_groups): Reimplement using...
(omp_index_mapping_groups_1): This new function.  Handle
REINDEX_SENTINEL.
(omp_reindex_mapping_groups, omp_mapped_by_containing_struct): New
functions.
(omp_tsort_mapping_groups_1): Adjust handling of base group being the
same as current group.  Use omp_mapped_by_containing_struct.
(omp_build_struct_sibling_lists): Use omp_mapped_by_containing_struct
and omp_reindex_mapping_groups.  Robustify group deletion for reordered
lists.
(gimplify_scan_omp_clauses): Update calls to
omp_build_struct_sibling_lists.

gcc/c/
* c-typeck.cc (c_finish_omp_clauses): Remove whole mapping node group
on error.

gcc/cp/
* semantics.cc (finish_omp_clauses): Likewise.

2 years agoOpenMP/OpenACC struct sibling list gimplification extension and rework
Julian Brown [Wed, 16 Feb 2022 17:15:39 +0000 (09:15 -0800)]
OpenMP/OpenACC struct sibling list gimplification extension and rework

This patch refactors struct sibling-list processing in gimplify.cc, and
adjusts some related mapping-clause processing in the Fortran FE and
omp-low.cc accordingly.

2022-09-13  Julian Brown  <julian@codesourcery.com>

gcc/fortran/
* trans-openmp.cc (gfc_trans_omp_clauses): Don't create
GOMP_MAP_TO_PSET mappings for class metadata, nor GOMP_MAP_POINTER
mappings for POINTER_TYPE_P decls.

gcc/
* gimplify.cc (gimplify_omp_var_data): Remove GOVD_MAP_HAS_ATTACHMENTS.
(GOMP_FIRSTPRIVATE_IMPLICIT): Renumber.
(insert_struct_comp_map): Refactor function into...
(build_omp_struct_comp_nodes): This new function.  Remove list handling
and improve self-documentation.
(extract_base_bit_offset): Remove BASE_REF, OFFSETP parameters.  Move
code to strip outer parts of address out of function, but strip no-op
conversions.
(omp_mapping_group): Add DELETED field for use during reindexing.
(omp_strip_components_and_deref, omp_strip_indirections): New functions.
(omp_group_last, omp_group_base): Add GOMP_MAP_STRUCT handling.
(omp_gather_mapping_groups): Initialise DELETED field for new groups.
(omp_index_mapping_groups): Notice DELETED groups when (re)indexing.
(omp_siblist_insert_node_after, omp_siblist_move_node_after,
omp_siblist_move_nodes_after, omp_siblist_move_concat_nodes_after): New
helper functions.
(omp_accumulate_sibling_list): New function to build up GOMP_MAP_STRUCT
node groups for sibling lists. Outlined from gimplify_scan_omp_clauses.
(omp_build_struct_sibling_lists): New function.
(gimplify_scan_omp_clauses): Remove struct_map_to_clause,
struct_seen_clause, struct_deref_set.  Call
omp_build_struct_sibling_lists as pre-pass instead of handling sibling
lists in the function's main processing loop.
(gimplify_adjust_omp_clauses_1): Remove GOVD_MAP_HAS_ATTACHMENTS
handling, unused now.
* omp-low.cc (scan_sharing_clauses): Handle pointer-type indirect
struct references, and references to pointers to structs also.

gcc/testsuite/
* g++.dg/goacc/member-array-acc.C: New test.
* g++.dg/gomp/member-array-omp.C: New test.
* g++.dg/gomp/target-3.C: Update expected output.
* g++.dg/gomp/target-lambda-1.C: Likewise.
* g++.dg/gomp/target-this-2.C: Likewise.
* c-c++-common/goacc/deep-copy-arrayofstruct.c: Move test from here.
* c-c++-common/gomp/target-50.c: New test.

libgomp/
* testsuite/libgomp.oacc-c-c++-common/deep-copy-15.c: New test.
* testsuite/libgomp.oacc-c-c++-common/deep-copy-16.c: New test.
* testsuite/libgomp.oacc-c++/deep-copy-17.C: New test.
* testsuite/libgomp.oacc-c-c++-common/deep-copy-arrayofstruct.c: Move
test to here, make "run" test.

2 years agotree-optimization/106938 - cleanup abnormal edges after inlining
Richard Biener [Wed, 14 Sep 2022 11:53:56 +0000 (13:53 +0200)]
tree-optimization/106938 - cleanup abnormal edges after inlining

After inlining and IPA transforms we run fixup_cfg to fixup CFG
effects in other functions.  But that fails to clean abnormal
edges from non-pure/const calls which might no longer be necessary
when ->calls_setjmp is false.  The following ensures this happens
and refactors things so we call EH/abnormal cleanup only on the
last stmt in a block.

PR tree-optimization/106938
* tree-cfg.cc (execute_fixup_cfg): Purge dead abnormal
edges for all last stmts in a block.  Do EH cleanup
only on the last stmt in a block.

* gcc.dg/pr106938.c: New testcase.

2 years ago[PR106936] Remove assert from get_value_range.
Aldy Hernandez [Wed, 14 Sep 2022 12:48:36 +0000 (14:48 +0200)]
[PR106936] Remove assert from get_value_range.

This assert was put here to make sure that the legacy
get_value_range() wasn't being called on stuff that legacy couldn't
handle (floats, etc), because the result would ultimately be copied
into a value_range_equiv.

In this case, simplify_casted_cond() is calling it on an offset_type
which is neither an integer nor a pointer.  However, range_of_expr
happily punted on it, and then the fallthru code set the range to
VARYING.  As value_range_equiv can store VARYING types of anything
(including types it can't handle), this is fine.

The easiest thing to do is remove the assert.  If someone from the non
legacy world tries to get a non integer/pointer range here, it's going
to blow up anyhow because the temporary in get_value_range is
int_range_max.

PR tree-optimization/106936

gcc/ChangeLog:

* value-query.cc (range_query::get_value_range): Remove assert.

gcc/testsuite/ChangeLog:

* g++.dg/tree-ssa/pr106936.C: New test.

2 years agoDrop unused variable
Jan-Benedict Glaw [Wed, 14 Sep 2022 12:16:52 +0000 (14:16 +0200)]
Drop unused variable

With the "STABS: remove -gstabs and -gxcoff functionality" patch, a left-over
`start` variable remained unused:

/usr/lib/gcc-snapshot/bin/g++  -fno-PIE -c   -g -O2   -DIN_GCC  -DCROSS_DIRECTORY_STRUCTURE   -fno-exceptions -fno-rtti -fasynchronous-unwind-tables -W -Wall -Wno-narrowing -Wwrite-strings -Wcast-qual -Wmissing-format-attribute -Woverloaded-virtual -pedantic -Wno-long-long -Wno-variadic-macros -Wno-overlength-strings -Werror -fno-common  -DHAVE_CONFIG_H -I. -I. -I../../gcc/gcc -I../../gcc/gcc/. -I../../gcc/gcc/../include -I../../gcc/gcc/../libcpp/include -I../../gcc/gcc/../libcody  -I../../gcc/gcc/../libdecnumber -I../../gcc/gcc/../libdecnumber/dpd -I../libdecnumber -I../../gcc/gcc/../libbacktrace   -o mips.o -MT mips.o -MMD -MP -MF ./.deps/mips.TPo ../../gcc/gcc/config/mips/mips.cc
../../gcc/gcc/config/mips/mips.cc: In function 'void mips_option_override()':
../../gcc/gcc/config/mips/mips.cc:20021:10: error: unused variable 'start' [-Werror=unused-variable]
20021 |   int i, start, regno, mode;
      |          ^~~~~

2022-09-14  Jan-Benedict Glaw  <jbglaw@lug-owl.de>

gcc/
* config/mips/mips.cc (mips_option_override): Drop unused variable.

2 years agoOpenMP 5.0: Clause ordering for OpenMP 5.0 (topological sorting by base pointer)
Julian Brown [Fri, 30 Jul 2021 16:15:18 +0000 (09:15 -0700)]
OpenMP 5.0: Clause ordering for OpenMP 5.0 (topological sorting by base pointer)

This patch reimplements the omp_target_reorder_clauses function in
anticipation of supporting "deeper" struct mappings (that is, with
several structure dereference operators, or similar).

The idea is that in place of the (possibly quadratic) algorithm in
omp_target_reorder_clauses that greedily moves clauses containing
addresses that are subexpressions of other addresses before those other
addresses, we employ a topological sort algorithm to calculate a proper
order for map clauses. This should run in linear time, and hopefully
handles degenerate cases where multiple "levels" of indirect accesses
are present on a given directive.

The new method also takes care to keep clause groups together, addressing
the concerns raised in:

  https://gcc.gnu.org/pipermail/gcc-patches/2021-May/570501.html

To figure out if some given clause depends on a base pointer in another
clause, we strip off the outer layers of the address expression, and check
(via a tree_operand_hash hash table we have built) if the result is a
"base pointer" as defined in OpenMP 5.0 (1.2.6 Data Terminology). There
are some subtleties involved, however:

 - We must treat MEM_REF with zero offset the same as INDIRECT_REF.
   This should probably be fixed in the front ends instead so we always
   use a canonical form (probably INDIRECT_REF). The following patch
   shows one instance of the problem, but there may be others:

   https://gcc.gnu.org/pipermail/gcc-patches/2021-May/571382.html

 - Mapping a whole struct implies mapping each of that struct's
   elements, which may be base pointers. Because those base pointers
   aren't necessarily explicitly referenced in the directive in question,
   we treat the whole-struct mapping as a dependency instead.

2022-09-13  Julian Brown  <julian@codesourcery.com>

gcc/
* gimplify.cc (is_or_contains_p, omp_target_reorder_clauses): Delete
functions.
(omp_tsort_mark): Add enum.
(omp_mapping_group): Add struct.
(debug_mapping_group, omp_get_base_pointer, omp_get_attachment,
omp_group_last, omp_gather_mapping_groups, omp_group_base,
omp_index_mapping_groups, omp_containing_struct,
omp_tsort_mapping_groups_1, omp_tsort_mapping_groups,
omp_segregate_mapping_groups, omp_reorder_mapping_groups): New
functions.
(gimplify_scan_omp_clauses): Call above functions instead of
omp_target_reorder_clauses, unless we've seen an error.
* omp-low.cc (scan_sharing_clauses): Avoid strict test if we haven't
sorted mapping groups.

gcc/testsuite/
* g++.dg/gomp/target-lambda-1.C: Adjust expected output.
* g++.dg/gomp/target-this-3.C: Likewise.
* g++.dg/gomp/target-this-4.C: Likewise.

2 years agotestsuite/s390: Add -mzarch to ifcvt test cases.
Robin Dapp [Tue, 6 Sep 2022 06:56:04 +0000 (08:56 +0200)]
testsuite/s390: Add -mzarch to ifcvt test cases.

Add missing -mzarch to ifcvt test cases.

gcc/testsuite/ChangeLog:

* gcc.target/s390/ifcvt-one-insn-bool.c: Add -mzarch.
* gcc.target/s390/ifcvt-one-insn-char.c: Dito.
* gcc.target/s390/ifcvt-two-insns-bool.c: Dito.
* gcc.target/s390/ifcvt-two-insns-int.c: Dito.
* gcc.target/s390/ifcvt-two-insns-long.c: Add -mzarch and change
long into long long.

2 years agotestsuite/s390: Fix vperm-rev testcases.
Robin Dapp [Wed, 31 Aug 2022 07:21:45 +0000 (09:21 +0200)]
testsuite/s390: Fix vperm-rev testcases.

Add -save-temps and tabs for matching.

gcc/testsuite/ChangeLog:

* gcc.target/s390/vector/vperm-rev-z14.c: Add -save-temps.
* gcc.target/s390/vector/vperm-rev-z15.c: Likewise.

2 years agoDisallow pointer operands for |, ^ and partly & [PR106878]
Jakub Jelinek [Wed, 14 Sep 2022 10:36:36 +0000 (12:36 +0200)]
Disallow pointer operands for |, ^ and partly & [PR106878]

My change to match.pd (that added the two simplifications this patch
touches) results in more |/^/& assignments with pointer arguments,
but since r12-1608 we reject pointer operands for BIT_NOT_EXPR.

Disallowing them for BIT_NOT_EXPR and allowing for BIT_{IOR,XOR,AND}_EXPR
leads to a match.pd maintainance nightmare (see one of the patches in the
PR), so either we want to allow pointer operand on BIT_NOT_EXPR (but then
we run into issues e.g. with the ranger which expects it can emulate
BIT_NOT_EXPR ~X as - 1 - X which doesn't work for pointers which don't
support MINUS_EXPR), or the following patch disallows pointer arguments
for all of BIT_{IOR,XOR,AND}_EXPR with the exception of BIT_AND_EXPR
with INTEGER_CST last operand (for simpler pointer realignment).
I had to tweak one reassoc optimization and the two match.pd
simplifications.

2022-09-14  Jakub Jelinek  <jakub@redhat.com>

PR tree-optimization/106878
* tree-cfg.cc (verify_gimple_assign_binary): Disallow pointer,
reference or OFFSET_TYPE BIT_IOR_EXPR, BIT_XOR_EXPR or, unless
the second argument is INTEGER_CST, BIT_AND_EXPR.
* match.pd ((type) X op CST -> (type) (X op ((type-x) CST)),
(type) (((type2) X) op Y) -> (X op (type) Y)): Punt for
POINTER_TYPE_P or OFFSET_TYPE.
* tree-ssa-reassoc.cc (optimize_range_tests_cmp_bitwise): For
pointers cast them to pointer sized integers first.

* gcc.c-torture/compile/pr106878.c: New test.

2 years agotree-optimization/106934 - avoid BIT_FIELD_REF of bitfields
Richard Biener [Wed, 14 Sep 2022 07:00:35 +0000 (09:00 +0200)]
tree-optimization/106934 - avoid BIT_FIELD_REF of bitfields

The following avoids creating BIT_FIELD_REF of bitfields in
update-address-taken.  The patch doesn't implement punning to
a full precision integer type but leaves a comment according to
that.

PR tree-optimization/106934
* tree-ssa.cc (non_rewritable_mem_ref_base): Avoid BIT_FIELD_REFs
of bitfields.
(maybe_rewrite_mem_ref_base): Likewise.

* gfortran.dg/pr106934.f90: New testcase.

2 years agoCheck another epilog variable peeling case in vectorizable_nonlinear_induction.
liuhongt [Tue, 13 Sep 2022 05:25:24 +0000 (13:25 +0800)]
Check another epilog variable peeling case in vectorizable_nonlinear_induction.

in vectorizable_nonlinear_induction, r13-2503-gc13223b790bbc5 prevent variable peeling by
only checking LOOP_VINFO_MASK_SKIP_NITERS (loop_vinfo). But when
"!vect_use_loop_mask_for_alignment_p (loop_vinfo) &&
LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0", vectorizer will
still do variable peeling for epilog, and it hits gcc_assert in
vect_peel_nonlinear_iv_init.

gcc/ChangeLog:

PR tree-optimization/106905
* tree-vect-loop.cc (vectorizable_nonlinear_induction): Return
false when !vect_use_loop_mask_for_alignment_p (loop_vinfo) &&
LOOP_VINFO_PEELING_FOR_ALIGNMENT (loop_vinfo) < 0.

gcc/testsuite/ChangeLog:

* gcc.target/i386/pr106905.c: New test.
* gcc.target/ia64/pr106905.c: New test.

2 years agotestsuite: gluefile file need to be prefixed
Torbjörn SVENSSON [Wed, 14 Sep 2022 05:22:27 +0000 (07:22 +0200)]
testsuite: gluefile file need to be prefixed

When the status wrapper is used, the gluefile need to be prefixed with
-Wl, in order for the test cases to have the dump files with the
expected names.

2022-09-14  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>

gcc/testsuite/
PR target/95720
* lib/g++.exp: Moved gluefile block to after flags have been
  prefixed for the target_compile call.
* lib/gcc.exp: Likewise.
* lib/wrapper.exp: Reset adjusted state flag.

Co-Authored-By: Yvan ROUX <yvan.roux@foss.st.com>
Signed-off-by: Torbjörn SVENSSON <torbjorn.svensson@foss.st.com>
2 years agoDaily bump.
GCC Administrator [Wed, 14 Sep 2022 00:18:07 +0000 (00:18 +0000)]
Daily bump.

2 years agoPR target/106877: Robustify reg-stack to malformed asm.
Roger Sayle [Tue, 13 Sep 2022 18:49:20 +0000 (19:49 +0100)]
PR target/106877: Robustify reg-stack to malformed asm.

This patch resolves PR target/106877 an ICE-on-invalid inline-asm
regression.  An innocent upstream change means that the test case
from PR inline-asm/84683 now hits a different assert in reg-stack.cc's
move_for_stack_reg.  Fixed by duplicating Jakub's solution to PR 84683
https://gcc.gnu.org/pipermail/gcc-patches/2018-March/495193.html at
this second (similar) gcc_assert.

2022-09-13  Roger Sayle  <roger@nextmovesoftware.com>

gcc/ChangeLog
PR target/106877
* reg-stack.cc (move_for_stack_reg): Check for any_malformed_asm
in gcc_assert.

gcc/testsuite/ChangeLog
PR target/106877
* g++.dg/ext/pr106877.C: New test case.

2 years agolibgomp: Appease some static analyzers [PR106906]
Jakub Jelinek [Tue, 13 Sep 2022 17:00:02 +0000 (19:00 +0200)]
libgomp: Appease some static analyzers [PR106906]

While icv_addr[1] = false; assignments where icv_addr has void *
element type is correct and matches how it is used (in those cases
the void * pointer is then cast to bool and used that way), there is no
reason not to add explicit (void *) casts there which are there already
for (void *) true.  And, there is in fact even no point in actually
doing those stores at all because we set that pointer to NULL a few
lines earlier.  So, this patch adds the explicit casts and then
comments those out to show intent.

2022-09-13  Jakub Jelinek  <jakub@redhat.com>

PR libgomp/106906
* env.c (get_icv_member_addr): Cast false to void * before assigning
it to icv_addr[1], and comment the whole assignment out.

2 years agolibstdc++: Implement ranges::slide_view from P2442R1
Patrick Palka [Tue, 13 Sep 2022 15:18:16 +0000 (11:18 -0400)]
libstdc++: Implement ranges::slide_view from P2442R1

This also implements the LWG 3711 and 3712 changes to slide_view.

libstdc++-v3/ChangeLog:

* include/std/ranges (__detail::__slide_caches_nothing): Define.
(__detail::__slide_caches_last): Define.
(__detail::__slide_caches_first): Define.
(slide_view): Define.
(enable_borrowed_range<slide_view>): Define.
(slide_view::_Iterator): Define.
(slide_view::_Sentinel): Define.
(views::__detail::__can_slide_view): Define.
(views::_Slide, views::slide): Define.
* testsuite/std/ranges/adaptors/slide/1.cc: New test.

2 years agolibstdc++: Implement ranges::chunk_view from P2442R1
Patrick Palka [Tue, 13 Sep 2022 15:18:14 +0000 (11:18 -0400)]
libstdc++: Implement ranges::chunk_view from P2442R1

This also implements the LWG 3707, 3710 and 3712 changes to chunk_view.

libstdc++-v3/ChangeLog:

* include/std/ranges (__detail::__div_ceil): Define.
(chunk_view): Define.
(chunk_view::_OuterIter): Define.
(chunk_view::_OuterIter::value_type): Define.
(chunk_view::_InnerIter): Define.
(chunk_view<_Vp>): Define partial specialization for forward
ranges.
(enable_borrowed_range<chunk_view>): Define.
(chunk_view<_Vp>::_Iterator): Define.
(views::__detail::__can_chunk_view): Define.
(views::_Chunk, views::chunk): Define.
* testsuite/std/ranges/adaptors/chunk/1.cc: New test.

2 years agolibstdc++: Implement LWG 3569 changes to join_view::_Iterator
Patrick Palka [Tue, 13 Sep 2022 15:18:07 +0000 (11:18 -0400)]
libstdc++: Implement LWG 3569 changes to join_view::_Iterator

libstdc++-v3/ChangeLog:

* include/std/ranges (join_view::_Iterator::_M_satisfy):
Adjust resetting _M_inner as per LWG 3569.
(join_view::_Iterator::_M_inner): Wrap in std::optional
as per LWG 3569.
(join_view::_Iterator::_Iterator): Relax constraints as
per LWG 3569.
(join_view::_Iterator::operator*): Adjust as per LWG 3569.
(join_view::_Iterator::operator->): Likewise.
(join_view::_Iterator::operator++): Likewise.
(join_view::_Iterator::operator--): Likewise.
(join_view::_Iterator::iter_move): Likewise.
(join_view::_Iterator::iter_swap): Likewise.
* testsuite/std/ranges/adaptors/join.cc (test14): New test.