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gcc/testsuite/ChangeLog:
PR analyzer/98247
* gcc.dg/analyzer/flexible-array-member-1.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
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libstdc++-v3/ChangeLog:
* include/bits/atomic_base.h (__atomic_impl::__compare_exchange):
Rename __weak to __is_weak.
* testsuite/17_intro/names.cc: Add __weak and __strong.
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PR libstdc++/106803
libstdc++-v3/ChangeLog:
* include/std/ranges (views::_ZipTransform::operator()): Correct
return type in the empty case.
(views::_AdjacentTransform::operator()): Likewise.
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PR libstdc++/106798
libstdc++-v3/ChangeLog:
* include/std/ranges (adjacent_view::_Iterator::_Iterator): Fix
typo.
* testsuite/std/ranges/adaptors/adjacent/1.cc (test04): New test.
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The difference type of an underlying iterator could be an integer-class
type, which make_unsigned_t doesn't handle, so we need to use the more
general __make_unsigned_like_t / __to_unsigned_like here instead.
PR libstdc++/106766
libstdc++-v3/ChangeLog:
* include/std/ranges (zip_view::_Iterator::operator-): Use
__to_unsigned_like instead of make_unsigned_t.
(zip_view::_Sentinel::operator-): Likewise.
* testsuite/std/ranges/zip/1.cc (test04): New test.
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Add support to nvptx for reverse lookup of function name to prepare for
'omp target device(ancestor:1)'.
gcc/ChangeLog:
* config/nvptx/mkoffload.cc (struct id_map): Add 'dim' member.
(record_id): Store func name without quotes, store dim separately.
(process): For GOMP_REQUIRES_REVERSE_OFFLOAD, check that -march is
at least sm_35, create '$offload_func_table' global array and init
with reverse-offload function addresses.
* config/nvptx/nvptx.cc (write_fn_proto_1, write_fn_proto): New
force_public attribute to force .visible.
(nvptx_declare_function_name): For "omp target
device_ancestor_nohost" attribut, force .visible/TREE_PUBLIC.
libgomp/ChangeLog:
* plugin/plugin-nvptx.c (GOMP_OFFLOAD_load_image): Read offload
function address table '$offload_func_table' if rev_fn_table
is not NULL.
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Add support to GCN for reverse lookup of function name to prepare for
'omp target device(ancestor:1)'.
gcc/ChangeLog:
* config/gcn/mkoffload.cc (process_asm): Create .offload_func_table,
similar to pre-existing .offload_var_table.
libgomp/ChangeLog:
* plugin/plugin-gcn.c (GOMP_OFFLOAD_load_image): Read
.offload_func_table to populate rev_fn_table when requested.
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Prepare for reverse-offloading function-pointer lookup by passing
a rev_fn_table argument to GOMP_OFFLOAD_load_image.
The argument will be NULL, unless GOMP_REQUIRES_REVERSE_OFFLOAD is
requested and devices not supported it, are filtered out.
(Up to and including this commit, no non-host device claims such
support and the caller currently always passes NULL.)
libgomp/ChangeLog:
* libgomp-plugin.h (GOMP_OFFLOAD_load_image): Add
'uint64_t **rev_fn_table' argument.
* oacc-host.c (host_load_image): Likewise.
* plugin/plugin-gcn.c (GOMP_OFFLOAD_load_image): Likewise;
currently unused.
* plugin/plugin-nvptx.c (GOMP_OFFLOAD_load_image): Likewise.
* target.c (gomp_load_image_to_device): Update call but pass
NULL for now.
liboffloadmic/ChangeLog:
* plugin/libgomp-plugin-intelmic.cpp (GOMP_OFFLOAD_load_image):
Add (unused) uint64_t **rev_fn_table argument.
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C2x adds a macro unreachable to stddef.h, with the same semantics as
__builtin_unreachable. Define this macro accordingly.
Bootstrapped with no regressions for x86_64-pc-linux-gnu.
gcc/
* ginclude/stddef.h [__STDC_VERSION__ > 201710L] (unreachable):
New macro.
gcc/testsuite/
* gcc.dg/c11-unreachable-1.c, gcc.dg/c2x-unreachable-1.c: New
tests.
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As PR106833 shows, cv-qualified opaque type can cause ICE
during LTO. It exposes that we missd to handle OPAQUE_TYPE
well in type verification. As Richi pointed out, also
assuming that target will always define TYPE_MAIN_VARIANT
TYPE_CANONICAL for opaque type, this patch is to check
both are OPAQUE_TYPE_P and their modes are of MODE_OPAQUE
class. Besides, it also checks the only available size
and alignment information.
PR middle-end/106833
gcc/ChangeLog:
* tree.cc (verify_opaque_type): New function.
(verify_type): Call verify_opaque_type for OPAQUE_TYPE.
gcc/testsuite/ChangeLog:
* gcc.target/powerpc/pr106833.c: New test.
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This adds support for the following natively supported floating-point
operations, in scalar and vectorized modes:
floor, ceil, exp2*, log2*, sin*, cos*, ldexp, frexp
* These operations are single-precision float only and are only active
if unsafe_math_optimizations are enabled (due to potential numerical
precision issues).
2022-09-09 Kwok Cheung Yeung <kcy@codesourcery.com>
gcc/
* config/gcn/gcn-builtins.def (FABSVF, LDEXPVF, LDEXPV, FREXPVF_EXP,
FREXPVF_MANT, FREXPV_EXP, FREXPV_MANT): Add new builtins.
* config/gcn/gcn-protos.h (gcn_dconst1over2pi): New prototype.
* config/gcn/gcn-valu.md (MATH_UNOP_1OR2REG, MATH_UNOP_1REG,
MATH_UNOP_TRIG): New iterators.
(math_unop): New attributes.
(<math_unop><mode>2, <math_unop><mode>2<exec>,
<math_unop><mode>2, <math_unop><mode>2<exec>,
*<math_unop><mode>2_insn, *<math_unop><mode>2<exec>_insn,
ldexp<mode>3, ldexp<mode>3<exec>,
frexp<mode>_exp2, frexp<mode>_mant2,
frexp<mode>_exp2<exec>, frexp<mode>_mant2<exec>): New instructions.
(<math_unop><mode>2, <math_unop><mode>2<exec>): New expanders.
* config/gcn/gcn.cc (init_ext_gcn_constants): Update definition of
dconst1over2pi.
(gcn_dconst1over2pi): New.
(gcn_builtin_type_index): Add entry for v64df type.
(v64df_type_node): New.
(gcn_init_builtin_types): Initialize v64df_type_node.
(gcn_expand_builtin_1): Expand new builtins to instructions.
(print_operand): Fix assembler output for 1/(2*PI) constant.
* config/gcn/gcn.md (unspec): Add new entries.
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When predictive commoning builds a reference for iteration N it
prematurely associates a constant offset into the MEM_REF offset
operand which can be invalid if the base pointer then points
outside of an object which alias-analysis does not consider valid.
PR tree-optimization/106722
* tree-predcom.cc (ref_at_iteration): Do not associate the
constant part of the offset into the MEM_REF offset
operand, across a non-zero offset.
* gcc.dg/torture/pr106892.c: New testcase.
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While the first param is char (gomp_global_icv.bind_var), the second param
is char * (gomp_bind_var_list), so we shouldn't access it through *(char *).
2022-09-09 Jakub Jelinek <jakub@redhat.com>
PR libgomp/106894
* env.c (initialize_env) <case PARSE_BIND>: Use char ** instead of
char * for dest[1] initialization from params[1]. Formatting fixes.
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../../gcc/common/config/riscv/riscv-common.cc: In function 'const char* riscv_multi_lib_check(int, const char**)':
../../gcc/common/config/riscv/riscv-common.cc:1451:11: error: bare apostrophe ''' in format [-Werror=format-diag]
1451 | "Can't find suitable multilib set for %<-march=%s%>/%<-mabi=%s%>",
| ^
../../gcc/common/config/riscv/riscv-common.cc:1451:7: note: if avoiding the apostrophe is not feasible, enclose it in a pair of '%<' and '%>' directives instead
1451 | "Can't find suitable multilib set for %<-march=%s%>/%<-mabi=%s%>",
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../../gcc/common/config/riscv/riscv-common.cc: At global scope:
../../gcc/common/config/riscv/riscv-common.cc:1492:1: error: 'int riscv_check_conds(const switchstr*, int, int, const std::vector<std::__cxx11::basic_string<char> >&)' defined but not used [-Werror=unused-function]
1492 | riscv_check_conds (
| ^~~~~~~~~~~~~~~~~
../../gcc/common/config/riscv/riscv-common.cc:1374:1: error: 'const char* find_last_appear_switch(const switchstr*, int, const char*)' defined but not used [-Werror=unused-function]
1374 | find_last_appear_switch (
| ^~~~~~~~~~~~~~~~~~~~~~~
cc1plus: all warnings being treated as errors
make[3]: *** [Makefile:2442: riscv-common.o] Error 1
gcc/ChangeLog:
* common/config/riscv/riscv-common.cc (RISCV_USE_CUSTOMISED_MULTI_LIB):
Move forward for cover all all necessary functions for suppress
unused function warnings.
(riscv_multi_lib_check): Move forward, and tweak message to suppress
-Werror=format-diag warning.
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This adjusts simple_control_dep_chain in the same way I adjusted
compute_control_dep_chain_pdom to avoid adding fallthru edges to
the predicate chain.
PR tree-optimization/106881
* gimple-predicate-analysis.cc (simple_control_dep_chain):
Add only non-fallthru edges and avoid the same set of edges
as compute_control_dep_chain_pdom does.
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The mingw32 port is the only port to have TARGET_OVERRIDES_FORMAT_ATTRIBUTES
defined. When this macro is defined, it will never evaluate to NULL and produce
a warning: "error: the address of 'mingw_format_attribute_overrides' will never
be NULL [-Werror=address]"
Also, when TARGET_OVERRIDES_FORMAT_ATTRIBUTES is defined,
TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT must be defined as well. Add that
requirement to the docs.
2022-09-07 Jan-Benedict Glaw <jbglaw@lug-owl.de>
gcc/c-family/ChangeLog:
* c-format.cc (convert_format_name_to_system_name): Fix warning.
gcc/ChangeLog:
* doc/tm.texi.in (TARGET_OVERRIDES_FORMAT_ATTRIBUTES): Document requirement
of TARGET_OVERRIDES_FORMAT_ATTRIBUTES_COUNT being defined as well.
* doc/tm.texi: Regenerate.
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gcc/ChangeLog:
* optc-save-gen.awk: Always compare array option values with memcmp.
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glibc mallinfo is now deprecated resulting in make check-performance
failure. When glibc => 2.33 prefer mallinfo2.
libstdc++-v3/ChangeLog:
* testsuite/util/testsuite_performance.h (__gnu_test::MallocInfo): New.
(__gnu_test::malloc_info): New, replace mallinfo on current platform
supporting it and use mallinfo2 when glibc >= 2.33.
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omp/ompx sentinels are for vendor extensions; as they might be required for
the correctness of the program, a warning should be printable. This patch
documents in the OpenMP 5.2 table the existing warnings, including the new
warning for for fixed source form Fortran.
PR fortran/106670
gcc/fortran/ChangeLog:
* scanner.cc (skip_fixed_omp_sentinel): Add -Wsurprising warning
for 'omx' sentinels with -fopenmp.
* invoke.texi (-Wsurprising): Document additional warning case.
libgomp/ChangeLog:
* libgomp.texi (OpenMP 5.2): Add comment to ompx/omx entry.
gcc/testsuite/ChangeLog:
* c-c++-common/gomp/ompx-1.c: New test.
* c-c++-common/gomp/ompx-2.c: New test.
* g++.dg/gomp/ompx-attrs-1.C: New test.
* gfortran.dg/gomp/ompx-1.f90: New test.
* gfortran.dg/gomp/omx-1.f: New test.
* gfortran.dg/gomp/omx-2.f: New test.
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libgomp/ChangeLog:
* libgomp.texi (OpenMP-Implementation Specifics): New; add libmemkind
section; move OpenMP Context Selectors from ...
(Offload-Target Specifics): ... here; add 'AMD Radeo (GCN)' and
'nvptx' sections.
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The check_trait_type function is used for a number of different type
traits that have different requirements on their arguments. For example,
__is_constructible allows arrays of unknown bound even if the array
element is an incomplete type, but __is_aggregate does not, it always
requires the array element type to be complete. Other traits have
different requirements again, e.g. __is_empty allows incomplete unions,
and arrays (of known or unknown bound) of incomplete types.
This alters the check_trait_type function to take an additional KIND
parameter which indicates which set of type trait requirements to check.
As noted in a comment, the requirements for __is_aggregate deviate from
the ones for std::is_aggregate in the standard. It's not necessary for
the elements of an array to be complete types, because arrays are always
aggregates.
The type_has_virtual_destructor change is needed to avoid an ICE.
Previously it could never be called for incomplete union types as they
were (incorrectly) rejected by check_trait_type.
This change causes some additional diagnostics in some libstdc++ tests,
where the front end was not previously complaining about invalid types
that the library assertions diagnosed. We should consider removing the
library assertions from traits where the front end implements the
correct checks now.
PR c++/106838
gcc/cp/ChangeLog:
* class.cc (type_has_virtual_destructor): Return false for
union types.
* semantics.cc (check_trait_type): Add KIND parameter to support
different sets of requirements.
(finish_trait_expr): Pass KIND argument for relevant traits.
gcc/ChangeLog:
* doc/extend.texi (Type Traits): Fix requirements. Document
__is_aggregate and __is_final.
gcc/testsuite/ChangeLog:
* g++.dg/ext/array4.C: Fix invalid use of __is_constructible.
* g++.dg/ext/unary_trait_incomplete.C: Fix tests for traits with
different requirements.
libstdc++-v3/ChangeLog:
* testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc:
Prune additional errors from front-end.
* testsuite/20_util/is_move_constructible/incomplete_neg.cc:
Likewise.
* testsuite/20_util/is_nothrow_swappable/incomplete_neg.cc:
Likewise.
* testsuite/20_util/is_nothrow_swappable_with/incomplete_neg.cc:
Likewise.
* testsuite/20_util/is_swappable_with/incomplete_neg.cc:
Likewise.
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libstdc++-v3/ChangeLog:
* include/c_global/cstddef (byte): Add always_inline attribute
to all operator overloads.
(to_integer): Add always_inline attribute.
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This change implements P0528 which requires that padding bits not
participate in atomic compare exchange operations. All arguments to the
generic template are 'sanitized' by the __builtin_clear_padding intrinsic
before they are used in comparisons. This requires that any stores
also sanitize the incoming value.
Co-authored-by: Jakub Jelinek <jakub@redhat.com>
Co-authored-by: Jonathan Wakely <jwakely@redhat.com>
Signed-off-by: Thomas Rodgers <trodgers@redhat.com>
libstdc++-v3/ChangeLog:
* include/bits/atomic_base.h (__atomic_impl::__maybe_has_padding):
New function.
(__atomic_impl::clear_padding): Likewise.
(__atomic_impl::__compare_exchange): Likewise.
(__atomic_impl::compare_exchange_weak): Delegate to
__compare_exchange.
(__atomic_impl::compare_exchange_strong): Likewise.
* include/std/atomic (atomic<T>::atomic(T)): Clear padding when
possible in a constexpr function.
(atomic::store): Clear padding.
(atomic::exchange): Likewise.
(atomic::compare_exchange_weak): Use __compare_exchange.
(atomic::compare_exchange_strong): Likewise.
* testsuite/29_atomics/atomic/compare_exchange_padding.cc: New
test.
* testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
New test.
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The new proposed resolution for LWG 3629 says that std::error_code and
std::error_condition should only use ADL to find their customization
points. This means we need to use a poison pill to prevent lookup from
finding overloads in the enclosing namespaces.
We can also remove the forward declarations of std::make_error_code and
std::make_error_condition, because they aren't needed now. ADL can find
them anyway (when std is an associated namespace), and unqualified name
lookup will not (and should not) find them.
libstdc++-v3/ChangeLog:
* include/std/system_error (__adl_only::make_error_code): Add
deleted function.
(__adl_only::make_error_condition): Likewise.
(error_code::error_code(ErrorCodeEnum)): Add using-declaration
for deleted function.
(error_condition::error_condition(ErrorConditionEnum)):
Likewise.
* testsuite/19_diagnostics/error_code/cons/lwg3629.cc: New test.
* testsuite/19_diagnostics/error_condition/cons/lwg3629.cc: New test.
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This patch adds support for reasoning about the inequality of two symbolic
values in the special case specifically suited for reasoning about
out-of-bounds past the end of the buffer. With this patch, the analyzer
catches off-by-one errors and more even when the offset and capacity is
symbolic.
Regrtested on Linux x86_64 and tested on coreutils, curl, httpd and
openssh as usual.
2022-09-07 Tim Lange <mail@tim-lange.me>
gcc/analyzer/ChangeLog:
PR analyzer/106625
* analyzer.h (region_offset): Eliminate m_is_symbolic member.
* region-model-impl-calls.cc (region_model::impl_call_realloc):
Refine implementation to be more precise.
* region-model.cc (class symbolic_past_the_end):
Abstract diagnostic class to complain about accesses past the end
with symbolic values.
(class symbolic_buffer_overflow):
Concrete diagnostic class to complain about buffer overflows with
symbolic values.
(class symbolic_buffer_overread):
Concrete diagnostic class to complain about buffer overreads with
symbolic values.
(region_model::check_symbolic_bounds): New function.
(maybe_get_integer_cst_tree): New helper function.
(region_model::check_region_bounds):
Add call to check_symbolic_bounds if offset is not concrete.
(region_model::eval_condition_without_cm):
Add support for EQ_EXPR and GT_EXPR with binaryop_svalues.
(is_positive_svalue): New hleper function.
(region_model::symbolic_greater_than):
New function to handle GT_EXPR comparisons with symbolic values.
(region_model::structural_equality): New function to compare
whether two svalues are structured the same, i.e. evaluate to
the same value.
(test_struct): Reflect changes to region::calc_offset.
(test_var): Likewise.
(test_array_2): Likewise and add selftest with symbolic i.
* region-model.h (class region_model): Add check_symbolic_bounds,
symbolic_greater_than and structural_equality.
* region.cc (region::get_offset):
Reflect changes to region::calc_offset.
(region::calc_offset):
Compute the symbolic offset if the offset is not concrete.
(region::get_relative_symbolic_offset): New function to return the
symbolic offset in bytes relative to its parent.
(field_region::get_relative_symbolic_offset): Likewise.
(element_region::get_relative_symbolic_offset): Likewise.
(offset_region::get_relative_symbolic_offset): Likewise.
(bit_range_region::get_relative_symbolic_offset): Likewise.
* region.h: Add get_relative_symbolic_offset.
* store.cc (binding_key::make):
Reflect changes to region::calc_offset.
(binding_map::apply_ctor_val_to_range): Likewise.
(binding_map::apply_ctor_pair_to_child_region): Likewise.
(binding_cluster::bind_compound_sval): Likewise.
(binding_cluster::get_any_binding): Likewise.
(binding_cluster::maybe_get_compound_binding): Likewise.
gcc/ChangeLog:
PR analyzer/106625
* doc/invoke.texi:
State that the checker also reasons about symbolic values.
gcc/testsuite/ChangeLog:
PR analyzer/106625
* gcc.dg/analyzer/data-model-1.c: Change expected result.
* gcc.dg/analyzer/out-of-bounds-5.c: New test.
* gcc.dg/analyzer/out-of-bounds-realloc-grow.c: New test.
* gcc.dg/analyzer/symbolic-gt-1.c: New test.
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This patch considers the environment variable syntax extension for
device-specific variants of environment variables from OpenMP 5.1 (see
OpenMP 5.1 specification, p. 75 and p. 639). An environment variable (e.g.
OMP_NUM_TEAMS) can have different suffixes:
_DEV (e.g. OMP_NUM_TEAMS_DEV): affects all devices but not the host.
_DEV_<device> (e.g. OMP_NUM_TEAMS_DEV_42): affects only device with
number <device>.
no suffix (e.g. OMP_NUM_TEAMS): affects only the host.
In future OpenMP versions also suffix _ALL will be introduced (see discussion
https://github.com/OpenMP/spec/issues/3179). This is also considered in this
patch:
_ALL (e.g. OMP_NUM_TEAMS_ALL): affects all devices and the host.
The precedence is as follows (descending). For the host:
1. no suffix
2. _ALL
For devices:
1. _DEV_<device>
2. _DEV
3. _ALL
That means, _DEV_<device> is used whenever available. Otherwise _DEV is used if
available, and at last _ALL. If there is no value for any of the variable
variants, default values are used as already implemented before.
This patch concerns parsing (a), storing (b), output (c) and transmission to the
device (d):
(a) The actual number of devices and the numbering are not known when parsing
the environment variables. Thus all environment variables are iterated and
searched for device-specific ones.
(b) Only configured device-specific variables are stored. Thus, a linked list
is used.
(c) The output is done in omp_display_env (see specification p. 468f). Global
ICVs are tagged with [all], see https://github.com/OpenMP/spec/issues/3179.
ICVs which are not global but aren't handled device-specific yet are tagged
with [host]. omp_display_env outputs the initial values of the ICVs. That is
why a dedicated data structure is introduced for the inital values only
(gomp_initial_icv_list).
(d) Device-specific ICVs are transmitted to the device via GOMP_ADDITIONAL_ICVS.
libgomp/ChangeLog:
* config/gcn/icv-device.c (omp_get_default_device): Return device-
specific ICV.
(omp_get_max_teams): Added for GCN devices.
(omp_set_num_teams): Likewise.
(ialias): Likewise.
* config/nvptx/icv-device.c (omp_get_default_device): Return device-
specific ICV.
(omp_get_max_teams): Added for NVPTX devices.
(omp_set_num_teams): Likewise.
(ialias): Likewise.
* env.c (struct gomp_icv_list): New struct to store entries of initial
ICV values.
(struct gomp_offload_icv_list): New struct to store entries of device-
specific ICV values that are copied to the device and back.
(struct gomp_default_icv_values): New struct to store default values of
ICVs according to the OpenMP standard.
(parse_schedule): Generalized for different variants of OMP_SCHEDULE.
(print_env_var_error): Function that prints an error for invalid values
for ICVs.
(parse_unsigned_long_1): Removed getenv. Generalized.
(parse_unsigned_long): Likewise.
(parse_int_1): Likewise.
(parse_int): Likewise.
(parse_int_secure): Likewise.
(parse_unsigned_long_list): Likewise.
(parse_target_offload): Likewise.
(parse_bind_var): Likewise.
(parse_stacksize): Likewise.
(parse_boolean): Likewise.
(parse_wait_policy): Likewise.
(parse_allocator): Likewise.
(omp_display_env): Extended to output different variants of environment
variables.
(print_schedule): New helper function for omp_display_env which prints
the values of run_sched_var.
(print_proc_bind): New helper function for omp_display_env which prints
the values of proc_bind_var.
(enum gomp_parse_type): Collection of types used for parsing environment
variables.
(ENTRY): Preprocess string lengths of environment variables.
(OMP_VAR_CNT): Preprocess table size.
(OMP_HOST_VAR_CNT): Likewise.
(INT_MAX_STR_LEN): Constant for the maximal number of digits of a device
number.
(gomp_get_icv_flag): Returns if a flag for a particular ICV is set.
(gomp_set_icv_flag): Sets a flag for a particular ICV.
(print_device_specific_icvs): New helper function for omp_display_env to
print device specific ICV values.
(get_device_num): New helper function for parse_device_specific.
Extracts the device number from an environment variable name.
(get_icv_member_addr): Gets the memory address for a particular member
of an ICV struct.
(gomp_get_initial_icv_item): Get a list item of gomp_initial_icv_list.
(initialize_icvs): New function to initialize a gomp_initial_icvs
struct.
(add_initial_icv_to_list): Adds an ICV struct to gomp_initial_icv_list.
(startswith): Checks if a string starts with a given prefix.
(initialize_env): Extended to parse the new syntax of environment
variables.
* icv-device.c (omp_get_max_teams): Added.
(ialias): Likewise.
(omp_set_num_teams): Likewise.
* icv.c (omp_set_num_teams): Moved to icv-device.c.
(omp_get_max_teams): Likewise.
(ialias): Likewise.
* libgomp-plugin.h (GOMP_DEVICE_NUM_VAR): Removed.
(GOMP_ADDITIONAL_ICVS): New target-side struct that
holds the designated ICVs of the target device.
* libgomp.h (enum gomp_icvs): Collection of ICVs.
(enum gomp_device_num): Definition of device numbers for _ALL, _DEV, and
no suffix.
(enum gomp_env_suffix): Collection of possible suffixes of environment
variables.
(struct gomp_initial_icvs): Contains all ICVs for which we need to store
initial values.
(struct gomp_default_icv):New struct to hold ICVs for which we need
to store initial values.
(struct gomp_icv_list): Definition of a linked list that is used for
storing ICVs for the devices and also for _DEV, _ALL, and without
suffix.
(struct gomp_offload_icvs): New struct to hold ICVs that are copied to
a device.
(struct gomp_offload_icv_list): Definition of a linked list that holds
device-specific ICVs that are copied to devices.
(gomp_get_initial_icv_item): Get a list item of gomp_initial_icv_list.
(gomp_get_icv_flag): Returns if a flag for a particular ICV is set.
* libgomp.texi: Updated.
* plugin/plugin-gcn.c (GOMP_OFFLOAD_load_image): Extended to read
further ICVs from the offload image.
* plugin/plugin-nvptx.c (GOMP_OFFLOAD_load_image): Likewise.
* target.c (gomp_get_offload_icv_item): Get a list item of
gomp_offload_icv_list.
(get_gomp_offload_icvs): New. Returns the ICV values
depending on the device num and the variable hierarchy.
(gomp_load_image_to_device): Extended to copy further ICVs to a device.
* testsuite/libgomp.c-c++-common/icv-5.c: New test.
* testsuite/libgomp.c-c++-common/icv-6.c: New test.
* testsuite/libgomp.c-c++-common/icv-7.c: New test.
* testsuite/libgomp.c-c++-common/icv-8.c: New test.
* testsuite/libgomp.c-c++-common/omp-display-env-1.c: New test.
* testsuite/libgomp.c-c++-common/omp-display-env-2.c: New test.
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Fix a stupid typo in my vect_optimize_slp_pass patch.
gcc/
PR tree-optimization/106886
* tree-vect-slp.cc (vect_optimize_slp_pass::get_result_with_layout):
Fix copying of scalar stmts.
gcc/testsuite/
PR tree-optimization/106886
* gcc.dg/vect/bb-slp-layout-21.c: New test.
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Add #undef of MUSL_DYNAMIC_LINKER before #define, to satisfy build checks
when configured with --enable-werror-always.
gcc/ChangeLog:
* config/nios2/linux.h (MUSL_DYNAMIC_LINKER): Add #undef before #define.
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This was incidentally fixed by r13-806-g221acd67ca50f8.
PR c++/99209
gcc/testsuite/ChangeLog:
* g++.dg/cpp2a/lambda-uneval17.C: New test.
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CFG cleanup resets the control altering flag for noreturn functions
when they are ECF_LEAF (like __builtin_unreachable ()). The
.ABNORMAL_DISPATCHER call built during CFG construction is not
marked as control altering. Several passes inserting traps or
unreachables fail to set the flag. And more.
PR middle-end/106870
* gimple-harden-conditionals.cc (insert_check_and_trap):
Set the control-altering flag on the built IFN_TRAP.
* gimple.cc (gimple_build_builtin_unreachable): Likewise.
* tree-cfg.cc (handle_abnormal_edges): Set the control-altering
flag on the .ABNORMAL_DISPATCHER call.
* tree-cfgcleanup.cc (cleanup_call_ctrl_altering_flag): Avoid
resetting the control altering flag for ECF_NORETURN calls.
(cleanup_control_flow_bb): Set the control altering flag on
discovered noreturn calls.
* symtab-thunks.cc (expand_thunk): Set the control altering
flag for the noreturn tailcall case.
* tree-eh.cc (lower_resx): Likewisw for trap and unwind_resume
calls.
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Here the use of 'value' from within an unevaluated context causes us
to overeagerly instantiate it, via maybe_instantiate_decl called from
mark_used, despite the use occurring in a context that doesn't require
a definition.
This seems to only affect constexpr variable specializations, though
we used to have the same issue for constexpr function specializations
until r6-1309-g81371eff9bc7ef made us delay their instantiation until
necessary during constexpr evaluation.
This patch expands upon the r6-1309 fix to make mark_used avoid
unnecessarily instantiating constexpr variable specializations too,
by pulling out from maybe_instantiate_decl the condition
(decl_maybe_constant_var_p (decl)
|| (TREE_CODE (decl) == FUNCTION_DECL
&& DECL_OMP_DECLARE_REDUCTION_P (decl))
|| undeduced_auto_decl (decl))
into each of its three callers (including mark_used), removing the
problematic first test from mark_used, and simplifying accordingly.
The net result is that only mark_used is changed because the other two
callers, resolve_address_of_overloaded_function and decl_constant_var_p,
already guard the call appropriately. (This relaxation of mark_used
seems to be safe because during constexpr evaluation we already take
care to instantiate a constexpr variable as necessary via
decl_constant_value etc).
PR c++/99130
gcc/cp/ChangeLog:
* decl2.cc (maybe_instantiate_decl): Adjust function comment.
Check VAR_OR_FUNCTION_DECL_P. Pull out the disjunction into ...
(mark_used): ... here, removing the decl_maybe_constant_var_p
part of it.
gcc/testsuite/ChangeLog:
* g++.dg/cpp0x/constexpr-decltype5.C: New test.
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The function rebuild_location_adhoc_htab() was meant to reconstruct the
adhoc location hash map after restoring a line_maps instance from a
PCH. However, the function has never performed as intended because it
missed the last step of adding the data into the newly reconstructed hash
map. This patch fixes that.
It does not seem possible to construct a test case such that the current
incorrect behavior is observable as a compiler issue. It would be
observable, if it were possible for a precompiled header to contain an
adhoc location with a non-zero custom data pointer. But currently, such
data pointers are used only by the middle end to track inlining
information, and this happens later, too late to show up in a PCH.
I also noted that location_adhoc_data_update, which updates the hash map
pointers in a different scenario, was relying on undefined pointer
arithmetic behavior. I'm not aware of this having caused any issue in
practice, but in this patch I have also changed it to use defined pointer
operations instead.
libcpp/ChangeLog:
* line-map.cc (location_adhoc_data_update): Remove reliance on
undefined behavior.
(get_combined_adhoc_loc): Likewise.
(rebuild_location_adhoc_htab): Fix issue where the htab was not
properly updated.
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This patch implements doacross(sink: omp_cur_iteration - 1) that the
previous patchset emitted a sorry on during omp expansion.
It can be implemented with existing library functions.
To recap, depend(source)/doacross(source:)/doacross(source:omp_cur_iteration)
is implemented calling GOMP_doacross_post or GOMP_doacross_ull_post,
called with an array of long or unsigned long long elements, one for
all collapsed loops together and one for each further ordered loop if any.
We initialize that array in each thread when grabbing further set of iterations
and update it at the end of loops, so that it represents the current iteration
(as 0 based counters). When the worksharing loop is created, we tell the
library through another similar array the counts (the loop needs to be
rectangular) in each dimension, first element is count of all logical iterations
in the collapsed loops.
depend(sink:v1 op N1, v2 op N2, ...) is then implemented by conditionally calling
GOMP_doacross_wait/GOMP_doacross_ull_wait. For N? of 0 there is no check,
otherwise if it wants to wait in a particular dimension for a previous iteration,
we check that the corresponding iterator isn't the first one (or first few),
where the previous iterator in that dimension would be out of range, and similarly
for checking of next iteration in a dimension that it isn't the last one (or last few)
where it would be similarly out of bounds. Then the collapsed loop counters are
folded into a single 0 based counter (first argument) and then other 0 based
iterations counters on what iteration it should wait for.
Now, doacross(sink: omp_cur_iteration - 1) is supposed to wait for the previous
logical iteration in the combined iteration space of all ordered loops.
For the very first iteration in that combined iteration space it does nothing,
there is no previous iteration. And similarly it does nothing if there
are more ordered loops than collapsed loop and it isn't the first logical
iteration of the combined loops inside of the collapsed loops, because as implemented
we know the previous iteration in that case is always executed by the same thread
as the current one.
In the implementation, we use the same value as is stored in the first element
of the array for GOMP_doacross_post/GOMP_doacross_ull_post, if that value is 0,
we do nothing. The rest is different based on if ordered argument is equal to
collapse or not. If it is, then we otherwise call
GOMP_doacross_wait/GOMP_doacross_ull_wait with a single argument, one less than
that counter we compare against 0.
If ordered argument is bigger than collapse, we add a per-thread boolean variable
.first.N, which we set to true at the start of the outermost ordered loop inside
of the collapsed set of loops and set to false at the end of the innermost
ordered loop. If .first.N is false, we don't do anything (we know the previous
iteration was handled by the current thread and by my reading of the spec we don't
need to emit even a memory barrier in that case, because it is just synchronization
with the same thread), otherwise we call GOMP_doacross_wait/GOMP_doacross_ull_wait
with the first argument one less than the counter we compare against 0, and then
one less than 2nd and following counts if iterations we pass to the workshare
initialization. If say .counts.N passed to the workshare initialization is
{ 256, 13, 5, 2 } for collapse(3) ordered(6) loop, then
GOMP_doacross_post/GOMP_doacross_ull_post is called with arguments equal to
.ordereda.N[0] - 1, 12, 4, 1.
2022-09-08 Jakub Jelinek <jakub@redhat.com>
gcc/
* omp-expand.cc (expand_omp_ordered_sink): Add CONT_BB argument.
Add doacross(sink:omp_cur_iteration-1) support.
(expand_omp_ordered_source_sink): Clear counts[fd->ordered + 1].
Adjust expand_omp_ordered_sink caller.
(expand_omp_for_ordered_loops): If counts[fd->ordered + 1] is
non-NULL, set that variable to true at the start of outermost
non-collapsed loop and set it to false at the end of innermost
ordered loop.
(expand_omp_for_generic): If fd->ordered, allocate
1 + (fd->ordered - fd->collapse) further elements in counts array.
Copy to counts + 2 + fd->ordered the counts of fd->collapse ..
fd->ordered - 1 loop if any.
gcc/testsuite/
* c-c++-common/gomp/doacross-7.c: New test.
libgomp/
* libgomp.texi (OpenMP 5.2): Mention that omp_cur_iteration is now
fully supported.
* testsuite/libgomp.c/doacross-4.c: New test.
* testsuite/libgomp.c/doacross-5.c: New test.
* testsuite/libgomp.c/doacross-6.c: New test.
* testsuite/libgomp.c/doacross-7.c: New test.
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The following avoids adding fallthru edges to the control chain from
the post-dominator walk.
PR tree-optimization/106881
* gimple-predicate-analysis.cc (compute_control_dep_chain_pdom):
Add only non-fallthru edges and avoid the same set of edges
as the caller does.
* gcc.dg/uninit-pr106881.c: New testcase.
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On ppc we see a doloop temp rather than ivtmp.
PR testsuite/106872
* gcc.dg/uninit-pred-12.c: Adjust.
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gcc/ChangeLog:
* gimple-range-fold.cc
(fold_using_range::range_of_builtin_int_call): Use fpclassify like API.
* range-op-float.cc (finite_operand_p): Same.
(finite_operands_p): Same.
(foperator_lt::fold_range): Same.
(foperator_le::fold_range): Same.
(foperator_gt::fold_range): Same.
(foperator_ge::fold_range): Same.
(foperator_unordered::fold_range): Same.
(foperator_unordered::op1_range): Same.
(foperator_ordered::fold_range): Same.
* value-range.cc (frange::set_nan): Same.
(frange::set_signbit): Same.
(frange::union_): Same.
(frange::intersect): Same.
(frange::operator==): Same.
(frange::singleton_p): Same.
(frange::verify_range): Same.
(range_tests_nan): Same.
(range_tests_floats): Same.
* value-range.h(frange::known_finite): New.
(frange::maybe_inf): New.
(frange::known_inf): New.
(frange::maybe_nan): New.
(frange::known_nan): New.
(frange::known_signbit): New.
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The tm.h header would pull in config/elfos.h, which defines
TARGET_D_MINFO_SECTION needed for the D module support in the front-end
to emit data to the correct section for the run-time library to pick up.
The removal of it in r13-2385 caused a stage2 bootstrap failure on all
Solaris targets.
The memmodel header has also been removed as it is no longer required
now tm_p.h is no longer used by these sources.
gcc/ChangeLog:
* config/darwin-d.cc: Include tm.h.
* config/dragonfly-d.cc: Likewise.
* config/freebsd-d.cc: Remove memmodel.h.
* config/glibc-d.cc: Likewise.
* config/netbsd-d.cc: Include tm.h.
* config/openbsd-d.cc: Likewise.
* config/sol2-d.cc: Likewise.
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Several MVE builtins incorrectly use the same predicate/constraint
pair for several modes, which does not match the specification.
This patch uses the appropriate iterator instead.
2022-09-06 Christophe Lyon <christophe.lyon@arm.com>
gcc/
* config/arm/mve.md (mve_vqshluq_n_s<mode>): Use
MVE_pred/MVE_constraint instead of mve_imm_7/Ra.
(mve_vqshluq_m_n_s<mode>): Likewise.
(mve_vqrshrnbq_n_<supf><mode>): Use MVE_pred3/MVE_constraint3
instead of mve_imm_8/Rb.
(mve_vqrshrunbq_n_s<mode>): Likewise.
(mve_vqrshrntq_n_<supf><mode>): Likewise.
(mve_vqrshruntq_n_s<mode>): Likewise.
(mve_vrshrnbq_n_<supf><mode>): Likewise.
(mve_vrshrntq_n_<supf><mode>): Likewise.
(mve_vqrshrnbq_m_n_<supf><mode>): Likewise.
(mve_vqrshrntq_m_n_<supf><mode>): Likewise.
(mve_vrshrnbq_m_n_<supf><mode>): Likewise.
(mve_vrshrntq_m_n_<supf><mode>): Likewise.
(mve_vqrshrunbq_m_n_s<mode>): Likewise.
(mve_vsriq_n_<supf><mode): Use MVE_pred2/MVE_constraint2 instead
of mve_imm_selective_upto_8/Rg.
(mve_vsriq_m_n_<supf><mode>): Likewise.
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Currently, these two splitters (touched in this patch) are using predicate
`int_reg_operand_not_pseudo`, then they work in split2 pass after RA in
most times, and can not run before RA.
It would not be a bad idea to allow these splitters before RA. Then more
passes (e.g. combine, sched...) could optimize the emitted instructions.
And if splitting before RA, for current constant splitter, we may have more
freedom to create pseduo to help to generate more parallel instructions.
For the example in the leading patch [PATCH 1/2]: pli+plit+rldimi would be
better than pli+sldi+paddi.
Test this patch with spec, we could see performance gain some times; while
the improvement is not stable and woud caused by the patch indirectly.
gcc/ChangeLog:
* config/rs6000/rs6000.md (splitter for set to and_mask constants):
Use int_reg_operand (instead of int_reg_operand_not_pseudo).
(splitter for multi-insn constant loads): Ditto.
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gcc/ChangeLog:
* config/rs6000/rtems.h (CPP_OS_DEFAULT_SPEC): Define __PPC_VRSAVE__ if
-mvrsave is present.
* config/rs6000/t-rtems: Add -mvrsave multilib variants for
-mcpu=e6500.
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This file is missing the GCC Runtime Library Exception text in the
licence header. That is unintentional, and it should have been present.
libstdc++-v3/ChangeLog:
* include/std/barrier: Add missing runtime exception.
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gcc/ChangeLog:
* configure.ac: Restore detection of HAVE_XCOFF_DWARF_EXTRAS.
* config/rs6000/rs6000.cc (HAVE_XCOFF_DWARF_EXTRAS): Reset it.
* configure: Regenerate.
* config.in: Regenerate.
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Talking about the declarator form doesn't help when fixing that would get
you a different error about placeholders not being valid in a parameter.
This also adds a <> fixit, which isn't enough for most templates, but is a
start.
PR c++/106793
gcc/cp/ChangeLog:
* decl.cc (grokdeclarator): Improve placeholder diagnostics.
* parser.cc (cp_parser_type_id_1): Add fixit.
gcc/testsuite/ChangeLog:
* g++.dg/cpp23/auto-array2.C: Adjust.
* g++.dg/cpp1z/class-deduction113.C: New test.
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/
* MAINTAINERS: Update my email address.
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In schedule_region(), a basic block that does not contain any real insns
is not scheduled and the dfa state at the entry of the bb is not copied
to the fallthru basic block. However a DEBUG insn is treated as a real
insn, and if a bb contains non-real insns and a DEBUG insn, it's dfa
state is copied to the fallthru bb. This was resulting in
-fcompare-debug failure as the incoming dfa state of the fallthru block
is different with -g. We should always copy the dfa state of a bb to
it's fallthru bb even if the bb does not contain real insns.
2022-08-22 Surya Kumari Jangala <jskumari@linux.ibm.com>
gcc/
PR rtl-optimization/105586
* sched-rgn.cc (save_state_for_fallthru_edge): New function.
(schedule_region): Use it for all blocks.
gcc/testsuite/
PR rtl-optimization/105586
* gcc.target/powerpc/pr105586.c: New test.
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In the edge case of a coroutine not containing any locals, the ifcd/switch
temporaries would get added to the coroutine frame, corrupting its
layout. To prevent this, we can make sure there is always a BIND_EXPR at
the top of the function body, and thus, always a place for our new
temporaries to go without interfering with the coroutine frame.
PR c++/106188 - Incorrect frame layout after transforming conditional statement without top-level bind expression
PR c++/106713 - if (co_await ...) crashes with a jump to ud2
PR c++/106188
PR c++/106713
gcc/cp/ChangeLog:
* coroutines.cc (coro_rewrite_function_body): Ensure we have a
BIND_EXPR wrapping the function body.
gcc/testsuite/ChangeLog:
* g++.dg/coroutines/pr106188.C: New test.
Signed-off-by: Arsen Arsenović <arsen@aarsen.me>
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Instead of defining is_reference in terms of is_[lr]value_reference,
just define it directly.
libstdc++-v3/ChangeLog:
* include/std/type_traits (is_reference): Make the primary
template derive from false_type. Define two partial
specializations that derive from true_type.
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Instead of defining these in terms of a helper class template
and the relatively expensive __remove_cv_t, just declare four
explicit specializations of the main template, one for each choice
of cv-quals.
libstdc++-v3/ChangeLog:
* include/std/type_traits (__is_void_helper): Remove.
(is_void): Make the primary template derive from false_type,
and define four explicit specializations that derive from
true_type.
(__is_null_pointer_helper, is_null_pointer): Likewise.
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