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Currently __has_attribute(init_priority) always returns true, even on
targets that don't actually support init priorities, and when using the
attribute on such targets we just get a hard error about them being
unsupported. This makes it impossible to conditionally use the attribute
by querying __has_attribute.
This patch fixes this by including init_priority in the attribute table
only if the target supports init priorities. Thus on such targets
__has_attribute(init_priority) will now return false and we'll treat it
as just another unrecognized attribute (e.g. using it gives a -Wattribute
warning instead of a hard error).
gcc/cp/ChangeLog:
* tree.cc (cxx_attribute_table): Include init_priority entry
only if SUPPORTS_INIT_PRIORITY.
(handle_init_priority_attribute): Add ATTRIBUTE_UNUSED. Assert
SUPPORTS_INIT_PRIORITY is true.
gcc/testsuite/ChangeLog:
* g++.dg/special/initpri3.C: New test.
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r13-3652-ge4cba49413ca429dc82f6aa2e88129ecb3fdd943
This commit caused failure of update_version_git due to the removal of
liboffloadmic with ChangeLog in it, so I had to blacklist that commit
and here I'm adding ChangeLog entries manually.
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We can't handle r13-3652-ge4cba49413ca429dc82f6aa2e88129ecb3fdd943
* gcc-changelog/git_update_version.py: Add
e4cba49413ca429dc82f6aa2e88129ecb3fdd943 to ignored commits.
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Add fcopysign.{s,d} with the names copysign{sf,df}3 so GCC will expand
__builtin_copysign{f,} to a single instruction.
Link: https://sourceware.org/pipermail/libc-alpha/2022-November/143177.html
gcc/ChangeLog:
* config/loongarch/loongarch.md (UNSPEC_FCOPYSIGN): New unspec.
(type): Add fcopysign.
(copysign<mode>3): New instruction template.
gcc/testsuite/ChangeLog:
* gcc.target/loongarch/fcopysign.c: New test.
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It looks like there was some memory leak in the handling
of attribute target_clones.
Ok for trunk if testing passes?
gcc/ChangeLog:
* multiple_target.cc (expand_target_clones): Free memory.
Signed-off-by: Bernhard Reutner-Fischer <aldot@gcc.gnu.org>
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Ok for trunk if testing passes?
gcc/ChangeLog:
* cgraph.cc (cgraph_node::make_local): Remove redundant set_section.
* multiple_target.cc (create_dispatcher_calls): Likewise.
Signed-off-by: Bernhard Reutner-Fischer <aldot@gcc.gnu.org>
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Noticed when running on x86_64-linux-gnu with `-m32', this test
triggered other errors. Adjusted the test to use a different register
that is common between x86 and x86_64.
gcc/testsuite/ChangeLog:
* gdc.dg/attr_register2.d: Adjust test.
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The front-end added semantic support to permit comparing two vector
expressions. This removes the restriction in the code generator, as
well as the intrisics that previously exposed the same operation.
gcc/d/ChangeLog:
* d-target.cc (Target::isVectorOpSupported): Remove cases for
comparison operators.
* intrinsics.cc (maybe_set_intrinsic): Remove cases for vector
comparison intrinsics.
(maybe_warn_intrinsic_mismatch): Likewise.
(expand_intrinsic_vec_cond): Remove.
(maybe_expand_intrinsic): Remove cases for vector comparison
intrinsics.
* intrinsics.def (INTRINSIC_EQUALMASK): Remove.
(INTRINSIC_NOTEQUALMASK): Remove.
(INTRINSIC_GREATERMASK): Remove.
(INTRINSIC_GREATEREQUALMASK): Remove.
libphobos/ChangeLog:
* libdruntime/gcc/simd.d (equalMask): Implement using generics.
(notEqualMask): Likewise.
(greaterMask): Likewise.
(greaterOrEqualMask): Likewise.
(notMask): Likewise.
(andAndMask): Likewise.
(orOrMask): Likewise.
gcc/testsuite/ChangeLog:
* gdc.dg/Wbuiltin_declaration_mismatch2.d: Remove comparision tests.
* gdc.dg/simd2a.d: Update comparison tests.
* gdc.dg/simd2b.d: Likewise.
* gdc.dg/simd2c.d: Likewise.
* gdc.dg/simd2d.d: Likewise.
* gdc.dg/simd2e.d: Likewise.
* gdc.dg/simd2f.d: Likewise.
* gdc.dg/simd2g.d: Likewise.
* gdc.dg/simd2h.d: Likewise.
* gdc.dg/simd2i.d: Likewise.
* gdc.dg/simd2j.d: Likewise.
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It's not currently possible to use a C++11 raw string containing a newline as
part of the definition of a macro, or in any other preprocessing directive,
such as:
#define X R"(two
lines)"
#error R"(this error has
two lines)"
Add support for that by relaxing the conditions under which
_cpp_get_fresh_line() refuses to get a new line. For the case of lexing a raw
string, it's OK to do so as long as there is another line within the current
buffer. The code in cpp_get_fresh_line() was refactored into a new function
get_fresh_line_impl(), so that the new logic is applied only when processing a
raw string and not any other times.
libcpp/ChangeLog:
PR preprocessor/55971
* lex.cc (get_fresh_line_impl): New function refactoring the code
from...
(_cpp_get_fresh_line): ...here.
(lex_raw_string): Use the new version of get_fresh_line_impl() to
support raw strings containing new lines when processing a directive.
gcc/testsuite/ChangeLog:
PR preprocessor/55971
* c-c++-common/raw-string-directive-1.c: New test.
* c-c++-common/raw-string-directive-2.c: New test.
gcc/c-family/ChangeLog:
PR preprocessor/55971
* c-ppoutput.cc (adjust_for_newlines): Update comment.
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__pbase_type_info::__do_catch(), used to catch pointer type exceptions,
did not check if the type info object to compare against is a pointer
type info object before doing a static down-cast to a pointer type info
object. If RTTI is disabled, this leads to the following situation:
Since a pointer type info object has additional fields, they would
end up being undefined if the actual type info object was not a pointer
type info object.
A simple check has been added before the down-cast happens.
Note that a consequence of this check is that exceptions of type
pointer-to-member cannot be caught anymore.
In case RTTI is enabled, this does not seem to be a problem because
RTTI-based checks would run before and prevent running into the bad
down-cast. Hence, the fix is disabled if RTTI is enabled and exceptions
of type pointer-to-member can still be caught.
libstdc++-v3/ChangeLog:
PR libstdc++/105387
* libsupc++/pbase_type_info.cc (__do_catch) [!__cpp_rtti]: Add
check that the thrown type is actually a pointer.
* testsuite/18_support/105387.cc: New test.
* testsuite/18_support/105387_memptr.cc: New test.
Signed-off-by: Jakob Hasse <jakob.hasse@espressif.com>
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As the PR notes, the current conversion operators are defined as
function templates so that we can use SFINAE. But this changes how they
are considered for overload resolution. This moves those operators into
base classes that can be specialized so the operators are obsent unless
the constraints are satisfied.
libstdc++-v3/ChangeLog:
PR libstdc++/107525
* include/experimental/propagate_const (operator element_type*()):
Move into base class that can be partially specilized to iompose
constraints.
(operator const element_type*()): Likewise.
* testsuite/experimental/propagate_const/observers/107525.cc: New test.
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As shown in the PR, the default is not UTF-32 but rather UTF-32BE or
UTF-32LE, avoiding the need for a byte order mark in literals.
gcc/ChangeLog:
PR c/41041
* doc/cppopts.texi: Document -fwide-exec-charset defaults
correctly.
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This patch introduces -fmultiflags, short for multilib TFLAGS, as an
option that does nothing by default, but that can be added to TFLAGS
and mapped to useful options by driver self-specs.
for gcc/ChangeLog
* common.opt (fmultiflags): New.
* doc/invoke.texi: Document it.
* gcc.cc (driver_self_specs): Discard it.
* opts.cc (common_handle_option): Ignore it in the driver.
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I've read the paper and I believe we just implement it with no changes
needed (at least since PR67224 and similar libcpp changes in GCC 10),
but I could be wrong.
The following patch at least adds a testcase from the start of the paper.
2022-11-04 Jakub Jelinek <jakub@redhat.com>
* g++.dg/cpp23/charset1.C: New testcase from C++23 P2314R4.
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The following pseudo-patch regenerates the libcpp tables with Unicode 15.0.0
which added 4489 new characters.
As mentioned previously, this isn't just a matter of running the
two libcpp/make*.cc programs on the new Unicode files, but one needs
to manually update a table inside of makeuname2c.cc according to
a table in Unicode text (which is partially reflected in the text
files, but e.g. in Unicode 14.0.0 not 100% accurately, in 15.0.0
actually accurately).
I've also added some randomly chosen subset of those 4489 new
characters to a testcase.
2022-11-04 Jakub Jelinek <jakub@redhat.com>
gcc/testsuite/
* c-c++-common/cpp/named-universal-char-escape-1.c: Add tests for some
characters newly added in Unicode 15.0.0.
libcpp/
* makeuname2c.cc (struct generated): Update from Unicode 15.0.0
table 4-8.
* ucnid.h: Regenerated for Unicode 15.0.0.
* uname2c.h: Likewise.
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gcc/testsuite/
* gcc.target/aarch64/mgeneral-regs_3.c: Fix testcase.
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The c++-contracts branch uses this to retrieve the source form of the
contract predicate, to be returned by contract_violation::comment().
Co-authored-by: Jason Merrill <jason@redhat.com>
gcc/ChangeLog:
* input.cc (get_source_text_between): New fn.
* input.h (get_source_text_between): Declare.
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We're missing a lot of TLC in keeping track of nonzero bits across
range-ops. It isn't an oversight, but just limited amount of hours to
implement stuff.
This patch keeps better track of the nonzero mask (really
maybe_nonzero bits as discussed) across multiplication and division
when the RHS is a power of 2.
It fixes PR107342 and also touches on PR55157. In the latter, the
nonzero mask is being set quite late (CCP2) but could be set by evrp
time if we enhanced range-ops. I have added tests from both PRs.
Tested
PR tree-optimization/107342
gcc/ChangeLog:
* range-op.cc (operator_mult::fold_range): New.
(operator_div::fold_range): New.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/vrp122.c: New test.
* gcc.dg/tree-ssa/vrp123.c: New test.
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There is a thinko in a recent improvement made to operand_equal_p where
the code just looks at operand 2 of COMPONENT_REF, if it is present, to
compare addresses. That's wrong because operand 2 contains the number of
DECL_OFFSET_ALIGN-bit-sized words so, when DECL_OFFSET_ALIGN > 8, not all
the bytes are included and some of them are in DECL_FIELD_BIT_OFFSET, see
get_inner_reference for the model computation.
In other words, you would need to compare operand 2 and DECL_OFFSET_ALIGN
and DECL_FIELD_BIT_OFFSET in this situation, but I'm not sure this is worth
the hassle in practice so the fix just removes this alternate handling.
gcc/
* fold-const.cc (operand_compare::operand_equal_p) <COMPONENT_REF>:
Do not take into account operand 2.
(operand_compare::hash_operand) <COMPONENT_REF>: Likewise.
gcc/testsuite/
* gnat.dg/opt99.adb: New test.
* gnat.dg/opt99_pkg1.ads, gnat.dg/opt99_pkg1.adb: New helper.
* gnat.dg/opt99_pkg2.ads: Likewise.
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The goal of the trick is to make life easier for the combiner, but subword
paradoxical subregs make it harder for the register allocator instead.
gcc/
* expr.cc (emit_group_store): Do not use subword paradoxical subregs
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Since this is a trivial type, we probably don't need to do anything to
ensure it's still accessible after other static dtors.
libstdc++-v3/ChangeLog:
PR libstdc++/107500
* libsupc++/eh_globals.cc (eh_globals): Remove immortalizing
wrapper.
(__cxxabiv1::__cxa_get_globals_fast): Adjust.
(__cxxabiv1::__cxa_get_globals): Adjust.
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As in r12-6867-ge20486d508afdf we need to define _GNU_SOURCE explicitly
for Cygwin, because configure finds it in libc but it isn't declared
unless we request it.
libstdc++-v3/ChangeLog:
PR libstdc++/107511
* libsupc++/eh_alloc.cc (_GNU_SOURCE): Define.
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Attribute Overlaps_Storage, which can appear implicitly in expansion of
aliasing checks, is now excluded from operand validity checks. Likewise
for attribute Has_Same_Storage.
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference): Skip operand
validity checks for attributes Has_Same_Storage and
Overlaps_Storage.
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The first one is that Remove_Warning_Messages reinstates the Original_Node
of an N_Raise_Constraint_Error node in the tree for no clear reasons, and
the Original_Node may contain constructs whose expansion has been stopped
when the Constraint_Error was asserted, eventually causing gigi to stop.
The second one is that a path in Build_Array_Aggr_Code.Gen_Loop does not
copy the loop bounds, unlike other paths, thus triggering a sharing issue.
gcc/ada/
* errout.adb (Remove_Warning_Messages.Check_For_Warning): Do not
reinstate the Original_Node in the tree.
* exp_aggr.adb (Build_Array_Aggr_Code.Gen_Loop): Copy the bounds
on all paths.
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Comment cleanup only.
gcc/ada/
* libgnat/g-excact.ads
(Register_Global_Action): Refill comment.
(Name_To_Id): Change pragma Restriction from singular to plural.
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Cleanup related to new checks for unset references.
gcc/ada/
* sem_warn.adb (Check_References): Remove redundant guard, as it
is implied by a preceding call to Referenced_Check_Spec.
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Further cleanups related to warnings about unreferenced objects.
gcc/ada/
* sem_warn.adb (Check_References): Remove useless query for "spec"
of a variable; refactor nested if-statements into a single
condition.
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Cleanup related to new checks for unset references.
gcc/ada/
* sem_util.adb
(In_Pragma_Expression): Add standard guard against searching too
far.
(In_Quantified_Expression): Likewise.
* sem_warn.adb
(May_Need_Initialized_Actual): Remove redundant parens.
(Check_References): Remove guard that duplicates a condition from
the enclosing if-statement; only assign E1T variable when
necessary.
(Within_Postcondition): Fix layout.
(No_Warn_On_In_Out): Balance parens in comment.
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GNAT-defined Ada extensions are divided into two categories: those that are
enabled by either -gnatX or -gnatX0 and those which require -gnatX0.
Move static intrinsic functions from the second category into the first.
gcc/ada/
* doc/gnat_rm/implementation_defined_pragmas.rst: Add the standard
'... "On" enables this extension.' sentence to the description of
static intrinsic functions.
* sem_ch13.adb
(Analyze_Aspect_Spec): In the call to Error_Msg_GNAT_Extension for
a Static aspect specification for an intrinsic function, specify
Is_Core_Extension => True.
* sem_eval.adb
(Eval_Intrinsic_Call): Test Core_Extensions_Allowed instead of
testing All_Extensions_Allowed.
* gnat_rm.texi: Regenerate.
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Routine Set_Aspect_Specifications sets the Has_Aspect flag, so there is
no need to set this flag again afterwards.
Code cleanup; semantics is unaffected.
gcc/ada/
* aspects.adb (Relocate_Aspect): Remove call to Set_Has_Aspects.
* sem_ch12.adb (Analyze_Formal_Package_Declaration): Likewise.
* sem_util.adb (Copy_Ghost_Aspect, Copy_SPARK_Mode_Aspect):
Likewise.
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gcc/ada/
* exp_intr.adb
(Expand_Dispatching_Constructor_Call): Report an error on
unsupported dispatching constructor calls and report a warning on
calls that may fail at run time.
gcc/testsuite/
* gnat.dg/abstract1.ads: Cleanup whitespaces.
* gnat.dg/abstract1.adb: Likewise and add -gnatws to silence new
warning.
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The First_Entity/Next_Entity chain includes private entities, so there
it no need to iterate starting both from First_Entity and
First_Private_Entity.
Code cleanup related to improved detection of references to
uninitialized objects; behavior is unaffected.
gcc/ada/
* sem_util.adb
(Check_Components): Iterate using
First/Next_Component_Or_Discriminant.
(Has_Preelaborable_Initialization): Avoid repeated iteration with
calls to Check_Components with First_Entity and
First_Private_Entity.
(Is_Independent_Object_Entity): Tune indentation.
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When killing flags on assignable entities we iterated from First_Entity
and then again from First_Private_Entity. This second iteration was
unnecessary, because the entity chain that starts with First_Entity
contains all entities, including the private ones.
This is just a performance improvement; the behavior is unchanged.
gcc/ada/
* sem_ch7.adb (Clear_Constants): Only iterate from First_Entity
through Next_Entity; only examine variables because packages have
no assignable formal parameters.
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Fix uncontroversial typos.
gcc/ada/
* doc/gnat_ugn/building_executable_programs_with_gnat.rst: Fix
typos.
* doc/gnat_ugn/elaboration_order_handling_in_gnat.rst: Fix typos
and refill as necessary; remove trailing whitespace.
* doc/gnat_ugn/gnat_and_program_execution.rst: Fix typos.
* gnat_ugn.texi: Regenerate.
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During loop unnesting, when the loop statements are wrapped in a code
block, the newly created block's scope must be set to the loop
scope (instead of the previous 'Current_Scope' that would point to an
upper scope).
gcc/ada/
* sem_util.ads (Add_Block_Identifier): Add new extra Scope
argument.
* sem_util.adb (Add_Block_Identifier): Likewise and use this scope
variable instead of Current_Scope.
* exp_util.adb (Wrap_Statements_In_Block): Add new scope argument
to Add_Block_Identifier call.
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When killing known values of assignable entities we iterated from
First_Entity and then again from First_Private_Entity. This second
iteration was unnecessary, because the entity chain that starts with
First_Entity contains all entities, including the private ones.
This is just a performance improvement; the behavior is unchanged.
gcc/ada/
* sem_util.adb (Kill_Current_Values): Only iterate from
First_Entity through Next_Entity.
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When detecting controlling formals we are only interested in formal
parameters and not in other entities.
gcc/ada/
* sem_ch6.adb (Controlling_Formal): Iterate with First/Next_Formal
and not with First/Next_Entity.
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gcc/ada/
* exp_disp.adb
(Expand_Interface_Conversion): Fix typo in comment.
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gcc/ada/
* exp_disp.adb
(Expand_Interface_Conversion): Under configurable runtime, when
the target type is an interface that is an ancestor of the operand
type, skip generating code to displace the pointer to reference
the target dispatch table.
* sem_disp.adb
(Propagate_Tag): Handle class-wide types when checking for the
addition of an implicit interface conversion.
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Fix typo in documentation.
gcc/ada/
* doc/gnat_rm/standard_library_routines.rst: Fix typo.
* gnat_rm.texi: Regenerate.
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Spark and CodePeer do not depend on this unit anymore.
gcc/ada/
* sa_messages.ads, sa_messages.adb: Remove files.
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`No (X)` is essentially `not Present (X)`, there's no reason for not
using this shorter form.
gcc/ada/
* checks.adb, exp_atag.adb, exp_attr.adb, exp_ch4.adb, exp_ch6.adb,
exp_ch7.adb, exp_dbug.adb, exp_disp.adb, exp_unst.adb, exp_util.adb,
freeze.adb, layout.adb, pprint.adb, rtsfind.adb, sem_aggr.adb,
sem_attr.adb, sem_case.adb, sem_ch12.adb, sem_ch13.adb, sem_ch3.adb,
sem_ch5.adb, sem_ch6.adb, sem_ch8.adb, sem_dim.adb, sem_prag.adb,
sem_util.adb, sem_warn.adb:
Replace uses of `not Present (X)` with `No (X)`.
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Fix typos in units that describe GNAT abstract syntax tree.
gcc/ada/
* einfo.ads: Fix typos in comments; refill as necessary.
* sinfo.ads: Likewise.
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List of unknown words in files can be produced with:
$ cat *.rst | ispell -l |
tr '[:upper:]' '[:lower:]' | sort | uniq | less
and can be easily filtered with eyes.
gcc/ada/
* doc/gnat_rm/implementation_defined_aspects.rst: Fix typos.
* doc/gnat_rm/implementation_defined_attributes.rst: Likewise
* doc/gnat_rm/implementation_defined_characteristics.rst: Likewise
* doc/gnat_rm/implementation_defined_pragmas.rst: Likewise
* doc/gnat_rm/standard_library_routines.rst: Likewise.
* gnat_rm.texi: Regenerate.
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We save/restore visibility by setting the Is_Immediately_Visible flag
and appending entities to / removing them from the tail of an element
list.
However, the Is_Immediately_Visible flag can be restored in any order,
while the element list is singly-linked and removal from the tail is
inefficient. This change removes a performance hot spot, which accounted
for up to 10% of compilation time of complex applications (e.g. QGen),
at least as measured on GNAT built with profiling support.
gcc/ada/
* sem_ch8.adb (Restore_Scope_Stack): Remove elements from the head
and not the tail of an element list.
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gcc/ada/
* sinfo.ads: Small editorial changes.
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The -gnatX switch (and the related Extensions_Allowed pragma) is currently a
two-valued all-or-nothing option. Add support for enabling a curated subset
of language extensions without enabling others via the -gnatX switch
and for enabling all language extensions via the new -gnatX0 switch.
Similarly, the existing "ON" argument for the Extensions_Allowed pragma
now only enables the curated subset; the new argument "ALL" enables all
language extensions. The subset of language extensions currently includes
prefixed-view notation with an untagged prefix, fixed-low-bound array
subtypes, and casing on composite values.
gcc/ada/
* opt.ads: Replace Ada_Version_Type enumeration literal
Ada_With_Extensions with two literals, Ada_With_Core_Extensions
and Ada_With_All_Extensions. Update uses of the deleted literal.
Replace Extensions_Allowed function with two functions:
All_Extensions_Allowed and Core_Extensions_Allowed.
* errout.ads, errout.adb: Add Boolean parameter to
Error_Msg_GNAT_Extension to indicate whether the construct in
question belongs to the curated subset.
* exp_ch5.adb, par-ch4.adb, sem_case.adb, sem_ch3.adb:
* sem_ch4.adb, sem_ch5.adb, sem_ch8.adb: Replace calls to
Extensions_Allowed with calls to Core_Extensions_Allowed for
constructs that are in the curated subset.
* sem_attr.adb, sem_ch13.adb, sem_eval.adb, sem_util.adb: Replace
calls to Extensions_Allowed with calls to All_Extensions_Allowed
for constructs that are not in the curated subset.
* par-ch3.adb: Override default for new parameter in calls to
Error_Msg_GNAT_Extension for constructs in the curated subset.
* par-prag.adb: Add Boolean parameter to Check_Arg_Is_On_Or_Off to
also allow ALL. Set Opt.Ada_Version appropriately for ALL or ON
arguments.
* sem_prag.adb: Allowed ALL argument for an Extensions_Allowed
pragma. Set Opt.Ada_Version appropriately for ALL or ON arguments.
* switch-c.adb: The -gnatX switch now enables only the curated
subset of language extensions (formerly it enabled all of them);
the new -gnatX0 switch enables all of them.
* doc/gnat_ugn/building_executable_programs_with_gnat.rst:
Document new "-gnatX0" switch and update documentation for
"-gnatX" switch.
* doc/gnat_rm/implementation_defined_pragmas.rst: Document new ALL
argument for pragma Extensions_Allowed and update documentation
for the ON argument. Delete mention of Ada 2022 Reduce attribute
as an extension.
* gnat_rm.texi, gnat_ugn.texi: Regenerate.
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A previous change on this ticket introduced calls to CUDA_Register_Function
for adainit and adafinal, but failed to introduce declarations for the
C string variables that are initialized and then passed as actual parameters
in this call. Provide the missing declarations (and, incidentally, change
the names of the two variables).
gcc/ada/
* bindgen.adb: Introduce two new string constants for the names of
the C-String variables that are assigned the names for adainit and
adafinal. Replace string literals in Gen_CUDA_Init with references
to these constants. In Gen_CUDA_Defs, generate C-String variable
declarations where these constants are the names of the variables.
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In general, protected subprograms are only eligible for a lock-free
expansion if they do not reference global assignable objects.
However, it seems reasonable to ignore references to variables in
System.Scalar_Values, which are generated when pragma Initialize_Scalars
is active. Such references appear, for example, when protected
subprogram has formal parameters of mode out.
gcc/ada/
* sem_ch9.adb (Satisfies_Lock_Free_Requirements): Ignore
references to global variables inserted due to pragma
Initialize_Scalars.
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