Remove ABI reference from the ELIMINABLE_REGS to avoid static data
initialization dependency on xtensa core configuration.
2020-06-15 Max Filippov <jcmvbkbc@gmail.com>
gcc/
* config/xtensa/xtensa.c (xtensa_can_eliminate): New function.
(TARGET_CAN_ELIMINATE): New macro.
* config/xtensa/xtensa.h
(XTENSA_WINDOWED_HARD_FRAME_POINTER_REGNUM)
(XTENSA_CALL0_HARD_FRAME_POINTER_REGNUM): New macros.
(HARD_FRAME_POINTER_REGNUM): Define using
XTENSA_*_HARD_FRAME_POINTER_REGNUM.
(ELIMINABLE_REGS): Replace lines with HARD_FRAME_POINTER_REGNUM
by lines with XTENSA_WINDOWED_HARD_FRAME_POINTER_REGNUM and
XTENSA_CALL0_HARD_FRAME_POINTER_REGNUM.
since Alexandre's revamp of dump files handling in
r11-627-g1dedc12d186, BRIG FE has been receiving slightly different
-dumpbase (e.g. smoke_test.brig instead of smoke_test.hsail.brig when
compiling file smoke_test.hsail.brig) and the testsuite then could not
find the generated dump files it wanted to scan. I have not really
looked into why that changed, the easiest fix seems to me to remove
the hsail part already when generating the binary brig file from the
textual HSAIL representation.
gcc/testsuite/ChangeLog:
2020-06-09 Martin Jambor <mjambor@suse.cz>
* lib/brig.exp (brig_target_compile): Strip hsail extension when
gnerating the name of the binary brig file.
Minor code refactorings in tree-vect-data-refs.c and tree-vect-loop.c.
Use LOOP_VINFO_DATAREFS and LOOP_VINFO_DDRS when possible and rename
several parameters to make code more consistent.
2020-06-13 Felix Yang <felix.yang@huawei.com>
gcc/
* tree-vect-data-refs.c (vect_verify_datarefs_alignment): Rename
parameter to loop_vinfo and update uses. Use LOOP_VINFO_DATAREFS
when possible.
(vect_analyze_data_refs_alignment): Likewise, and use LOOP_VINFO_DDRS
when possible.
* tree-vect-loop.c (vect_dissolve_slp_only_groups): Use
LOOP_VINFO_DATAREFS when possible.
(update_epilogue_loop_vinfo): Likewise.
2020-06-15 Arnaud Charlet <charlet@adacore.com>
gcc/ada/
* sem_ch8.adb (Premature_Usage): Add support for subtype
references and replace set of if-then-else by a case statement.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* sem_prag.adb (Analyze_Depends_In_Decl_Part,
Analyze_Global_In_Decl_Part): Bring back task discriminants for
analysis of the Global/Depends contracts; add comments.
2020-06-15 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* einfo.ads (Return_Applies_To): Document special usage for E_Block.
* einfo.adb (Write_Field8_Name): Write it for E_Block too.
* exp_ch4.adb (Expand_N_Type_Conversion): Remove implementation of
the check prescribed by AI05-0073.
* exp_ch6.adb (Apply_CW_Accessibility_Check): New procedure to apply
the check prescribed by AI95-344 extracted from...
(Expand_N_Extended_Return_Statement): Apply the check prescribed by
AI95-344 to the expression, if present. Suppress only access checks
when analyzing the rewritten result.
(Expand_Simple_Function_Return): ...here. Rename local variable.
Call Apply_CW_Accessibility_Check to apply the check prescribed by
AI95-344, but do not do it for the simple return statement generated
by the expansion of an extended return statement. Apply the check
prescribed by AI05-0073 to all functions returning anonymous access
type designating a specific tagged type, but not if the expression
was null or tag checks are suppressed for the type, and use Not In
operator rather than comparing the tags explicitly.
* sem.adb (Analyze): Handle all Suppress values.
* sem_ch6.adb (Analyze_Function_Return): Do not explicitly apply
predicate checks in the case of an extended return statement.
Do not apply an implicit conversion to the anonymous access result
type in the case of the simple return statement generated by the
expansion of an extended return statement.
(New_Overloaded_Entity): Small comment tweak.
* treepr.adb (Print_Node): Fix typo in flag string.
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_put_image.ads, exp_put_image.adb
(Image_Should_Call_Put_Image): New function to determine whether
the call to Put_Image should be generated.
(Build_Image_Call): New procedure to generate the call to
Put_Image.
* exp_imgv.adb (Expand_Image_Attribute): Use underlying types to
bypass privacy (only in Ada 2020). If
Image_Should_Call_Put_Image is True (which happens only in Ada
2020), then call Build_Image_Call.
* rtsfind.ads, rtsfind.adb: Add the necessary declarations in
Ada.Strings.Text_Output.Buffers.
* sem_attr.adb (Check_Image_Type): Enable the Ada 2020 case.
* libgnat/a-stoufo.ads, libgnat/a-stoufo.adb: Use the less
restrictive type that allows newline characters.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): Fix
dealing with scopes on subprogram bodies that act as specs.
* sem_util.adb (Has_Relaxed_Initialization): Fix trivial
mistake.
2020-06-15 Javier Miranda <miranda@adacore.com>
gcc/ada/
* restrict.ads (Set_Global_No_Tasking, Global_No_Tasking): New
subprograms.
* restrict.adb (Set_Global_No_Tasking, Global_No_Tasking): New
subprograms.
* sem_ch3.adb (Access_Definition): Do not skip building masters
since they may be required for BIP calls.
(Analyze_Subtype_Declaration): Propagate attribute
Is_Limited_Record in class-wide subtypes and subtypes with
cloned subtype attribute; propagate attribute
Is_Limited_Interface.
* sem_ch6.adb (Check_Anonymous_Return): Do not skip building
masters since they may be required for BIP calls. Use
Build_Master_Declaration to declare the _master variable.
(Create_Extra_Formals): Add decoration of Has_Master_Entity when
the _master formal is added.
* exp_ch3.adb (Init_Formals): Adding formal to decorate it with
attribute Has_Master_Entity when the _master formal is added.
(Build_Master): Do not skip building masters since they may be
required for BIP calls.
(Expand_N_Object_Declaration): Ensure activation chain and
master entity for objects initialized with BIP function calls.
* sem_prag.adb (Process_Restrictions_Or_Restriction_Warnings):
Adding support to detect and save restriction No_Tasking when
set in the run-time package System or in a global configuration
pragmas file.
* sem_util.adb (Current_Entity_In_Scope): Overload this
subprogram to allow searching for an entity by its Name.
* sem_util.ads (Current_Entity_In_Scope): Update comment.
* exp_ch4.adb (Expand_N_Allocator): Do not skip building masters
since they may be required for BIP calls.
* exp_ch6.ads (Might_Have_Tasks): New subprogram.
* exp_ch6.adb (Make_Build_In_Place_Call_In_Allocator): Add
support for BIP calls returning objects that may have tasks.
(Make_Build_In_Place_Call_In_Allocator): Build the activation
chain if the result might have tasks.
(Make_Build_In_Place_Iface_Call_In_Allocator): Build the class
wide master for the result type.
(Might_Have_Tasks): New subprogram.
(Needs_BIP_Task_Actuals): Returns False when restriction
No_Tasking is globally set.
* exp_ch9.ads (Build_Master_Declaration): New subprogram.
* exp_ch9.adb (Build_Activation_Chain_Entity): No action
performed when restriction No_Tasking is globally set.
(Build_Class_Wide_Master): No action performed when restriction
No_Tasking is globally set; use Build_Master_Declaration to
declare the _master variable.
(Build_Master_Declaration): New subprogram.
(Build_Master_Entity): No action performed when restriction
No_Tasking is globally set; added support to handle transient
scopes and _finalizer routines.
(Build_Master_Renaming): No action performed when restriction
No_Tasking is globally set.
(Build_Task_Activation_Call): Skip generating the call when
the chain is an ignored ghost entity.
(Find_Master_Scope): Generalize the code that detects transient
scopes with master entity.
* einfo.ads (Has_Nested_Subprogram): Minor comment reformatting.
2020-06-15 Gary Dismukes <dismukes@adacore.com>
gcc/ada/
* exp_ch6.adb (Add_Call_By_Copy_Code): In the case of a view
conversion passed to a scalar out-mode parameter where the
formal has Default_Value set, declare the copy temp with the
base type of the formal's subtype and initialize the copy temp
with the actual's value.
2020-06-15 Justin Squirek <squirek@adacore.com>
gcc/ada/
* exp_ch4.adb (Expand_N_Case_Expression): Set default value for
Target to silence potential warnings.
(Expand_N_If_Expression): Add calculation to check when the if
expression is used directly in the context of an actual of an
anonymous access type and add a special path to force expansion
of the if expression in this case.
* exp_ch6.adb (Expand_Branch): Generate an assignment to the
level temporary for a given branch.
(Expand_Call_Helper): Add expansion to allow for creating a
temporary to store associated accessiblity levels on each branch
of the conditional expression. Also perform expansion of
function calls into expressions with actions, and fixup
references to N with Call_Node.
(Insert_Level_Assign): Move through nested conditional
expressions to each branch.
* sem_util.ads, sem_util.adb (Is_Anonymous_Access_Actual): Added
to detect when to force expansion of if expressions.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* sem_prag.adb (Analyze_Depends_In_Decl_Part,
Analyze_Global_In_Decl_Part): Do not install task discriminants
for analysis of the Global/Depends contracts.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* contracts.adb (Analyze_Object_Contract): Do not expect
Global/Depends on single protected units.
2020-06-15 Justin Squirek <squirek@adacore.com>
gcc/ada/
* sem_res.adb (Valid_Conversion): Add missing condition to
trigger proper static accessiblity failiures when the target
type is an anonymous access.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* exp_ch6.adb, sem_util.adb: Remove excessive parents,
especially since they don't make the code any easier to read.
2020-06-15 Piotr Trojanek <trojanek@adacore.com>
gcc/ada/
* aspects.ads (Aspect_Id): Add Aspect_Relaxed_Initialization.
(Implementation_Defined_Aspect): Add new aspect.
(Aspect_Argument): Add new aspect with Optional_Expression
argument.
(Is_Representation_Aspect): Add new aspect as a
non-representation one.
(Aspect_Names): Add name for the new aspect.
(Aspect_Delay): Add new aspect as a non-delayed one.
* sem_ch3.adb: Minor reformatting.
* einfo.ads, einfo.adb (Is_Relaxed_Initialization_State): New
query; reuses existing code for querying abstract state options.
* exp_attr.adb (Expand_N_Attribute_Reference): For now ignore
attribute 'Initialized.
* sem_attr.adb (Analyze_Attribute_Old_Result): Allow attribute
'Result to be used in the aspect Relaxed_Initialization
expression.
(Analyze_Attribute): Analyze attribute 'Initialized; based on
existing code for attribute 'Valid_Scalars.
(Eval_Attribute): Do not expect attribute 'Initialized, just
like attribute 'Valid_Scalars is not expected.
* sem_ch13.adb (Analyze_Aspect_Relaxed_Initialization): New
routine.
(Analyze_Aspect_Specifications): Analyze new aspect in a
dedicated routine.
(Check_Aspect_At_Freeze_Point): Do not expect new aspect.
* sem_prag.adb (Analyze_Abstract_State): Support option
Relaxed_Initialization on abstract states.
* sem_util.ads, sem_util.adb (Has_Relaxed_Initialization): New
query for the GNATprove backend.
* snames.ads-tmpl (Snames): Add Name_Ids for the new aspect and
attribute; add an Attribute_Id for the new attribute.
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_put_image.adb, libgnat/s-putima.adb, libgnat/s-putima.ads,
rtsfind.ads: Enable Put_Image if Is_Access_Subprogram_Type (Typ).
Remove comment saying it's disabled in that case. Rename
Put_Image_Access_Prot to be Put_Image_Access_Prot_Subp to
clarify that we're talking about access-to-subprogram, not
access-to-protected-object.
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* sem_attr.adb (Check_Image_Type): New procedure for checking
the type, depending on language version. Disable the Ada 2020
support until the corresponding expander work is done.
(Analyze_Image_Attribute): Call Check_Image_Type. Rearrange the
code to be simplier and more logical. When P_Type is modified,
modify P_Base_Type accordingly.
* sem_util.adb (Is_Object_Image): Do not return False if the
prefix is a type. X'Image should be considered an image of an
object iff X is an object (albeit illegal pre-2020 if
nonscalar).
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* libgnat/s-putima.ads, libgnat/s-putima.adb
(Put_Image_Access_Subp, Put_Image_Access_Prot): New procedures
for printing access-to-subprogram objects. Remove an explicit
" ", because Put_Image includes the annoying leading blank.
* rtsfind.ads: Add new procedures in s-putima.
* exp_put_image.adb: Call new procedures as appropriate.
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_imgv.adb (Expand_Image_Attribute): Allow private types.
Put_Image generates Image for numeric types, and private types
whose full type is numeric. This requires the Conversion_OK flag
for integer and floating-point types. For fixed point, we need
the extra conversion.
* exp_put_image.adb (Build_Elementary_Put_Image_Call): Remove
special handling of real types.
(Enable_Put_Image): Enable for reals.
2020-06-15 Bob Duff <duff@adacore.com>
gcc/ada/
* exp_attr.adb (Put_Image): Use underlying type for strings.
Remove unchecked union processing.
* exp_put_image.adb (Tagged_Put_Image_Enabled): Use -gnatd_z to
enable default Put_Image for tagged types. This allows testing
that feature.
(Build_String_Put_Image_Call): Set Conversion_OK flag.
(Make_Component_List_Attributes): Remove unchecked union
processing.
(Enable_Put_Image): Disable for unchecked unions. Enable for
nonscalar types (which were mistakenly disabled in earlier
changes).
* debug.adb: Document -gnatd_z switch.
* libgnat/s-putima.adb (Put_Image_String, Put_Image_Wide_String,
Put_Image_Wide_Wide_String): Double double-quote characters.
Forget about special handling of control characters for now --
that's rare enough to not be a priority, and it's not clear what
the right thing to do is anyway.
* namet.adb: Minor: Improve debugger-friendliness.
* sinfo.ads: Minor: Add "???" comment.
2020-06-15 Ed Schonberg <schonberg@adacore.com>
gcc/ada/
* freeze.adb (Freeze_Expression): When traversing the tree
looking for the proper insertion point for the freeze node of an
entity that is declared in an outer scope, set the candidate
subprogram body node properly. Previous code has an off-by-one
error.
2020-06-15 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* exp_attr.adb (Expand_N_Attribute_Reference) <Has_Same_Storage>:
Do not do superfluous work. Add the condition (X'Size /= 0) on
both paths and turn binary AND into short-circuit AND THEN.
2020-06-15 Steve Baird <baird@adacore.com>
gcc/ada/
* sem_attr.adb (Analyze_Attribute): In the Loop_Entry case,
replace a call to Statically_Denotes_Object with a call to
Statically_Names_Object and clean up the preceding comment.
2020-06-15 Eric Botcazou <ebotcazou@adacore.com>
gcc/ada/
* sem_res.adb (Resolve_Set_Membership): Remove local variable.
In the non-overloaded case, call Intersect_Types on the left
operand and the first alternative to get the resolution type.
But test the subtype of the left operand to give the warning.
gcc/ChangeLog:
* config/riscv/riscv.c (riscv_gen_gpr_save_insn): Change type to
unsigned for i.
(riscv_gpr_save_operation_p): Change type to unsigned for i and
len.
2020-06-13 Hongtao Liu <hongtao.liu@intel.com>
gcc/ChangeLog:
PR target/95488
* config/i386/i386-expand.c (ix86_expand_vecmul_qihi): New
function.
* config/i386/i386-protos.h (ix86_expand_vecmul_qihi): Declare.
* config/i386/sse.md (mul<mode>3): Drop mask_name since
there's no real simd int8 multiplication instruction with
mask. Also optimize it under TARGET_AVX512BW.
(mulv8qi3): New expander.
gcc/testsuite/ChangeLog:
* gcc.target/i386/avx512bw-pr95488-1.c: New test.
* gcc.target/i386/avx512bw-pr95488-2.c: Ditto.
* gcc.target/i386/avx512vl-pr95488-1.c: Ditto.
* gcc.target/i386/avx512vl-pr95488-2.c: Ditto.
This just avoids a crash with -fdump-fortran-global when the
global symbol table is empty. This is strictly a developer's
option, no user impact.
gcc/fortran/ChangeLog:
2020-06-14 Thomas Koenig <tkoenig@gcc.gnu.org>
PR fortran/42122
* dump-parse-tree.c (gfc_dump_global_symbols): If the symroot is
empty, just output "empty".
With PDTs (parameterized derived types) and submodules, name mangling
results in variably long internal symbols. Instead of using a fixed-size
intermediate buffer, which is actually not really needed, just use a
pointer to strings.
2020-06-14 Harald Anlauf <anlauf@gmx.de>
gcc/fortran/
PR fortran/95088
* class.c (get_unique_type_string): Replace use of fixed size
buffer by internally passing a pointer to strings.
A simple and obvios patch - the error location was taken
from a variable that was not initialized for optional
variables.
gcc/fortran/ChangeLog:
* check.c (gfc_check_random_seed): Always use locations
from get and put arguments for error messages.
gcc/testsuite/ChangeLog:
* gfortran.dg/random_seed_4.f90: New test.
Our finalization handling is a mess. Really, we should get to try and get
this fixed for gcc 11.
In the meantime, here is a patch which fixes a regression I introduced
when fixing a regression with a memory leak. The important thing
here is to realize that we do not need to finalize (and deallocate)
multiple times for the same expression and the same component
in the same namespace. It might cause code size regressions, but
better big code than wrong code...
gcc/fortran/ChangeLog:
PR fortran/94109
* class.c (finalize_component): Return early if finalization has
already happened for expression and component within namespace.
* gfortran.h (gfc_was_finalized): New type.
(gfc_namespace): Add member was_finalzed.
(gfc_expr): Remove finalized.
* symbol.c (gfc_free_namespace): Free was_finalized.
gcc/testsuite/ChangeLog:
PR fortran/94109
* gfortran.dg/finalize_34.f90: Adjust free counts.
* gfortran.dg/finalize_36.f90: New test.
Amends: PR middle-end/95353 - spurious -Wstringop-overflow writing to a trailing array plus offset.
gcc/testsuite/ChangeLog:
* gcc.dg/builtin-stringop-chk-5.c: Make assertions independent of
data model.
When committing 0cfc34ad12, I
accidentylly committed gcc/testsuite/gfortran.dg/finalize_36.f90 .
This removes this, again.
gcc/testsuite/ChangeLog:
* gfortran.dg/finalize_36.f90: Remove accidentally
committed test case.
The warning that is disabled, only on this single line, has been
inspected and found to be not applicable; it is known that the size
of the buffer is safe.
libgfortran/ChangeLog:
2020-06-13 Thomas Koenig <tkoenig@gcc.gnu.org>
PR libfortran/95313
* io/write.c (ztoa_big): Disable -Wstringop-overflow for one
line.
Adds param tsan-instrument-func-entry-exit, which controls if
__tsan_func_{entry,exit} calls should be emitted or not. The default
behaviour is to emit the calls.
This may be required by alternative race detection runtimes. One such
runtime is the Kernel Concurrency Sanitizer (KCSAN):
https://github.com/google/ktsan/wiki/KCSAN
After this change, GCC should satisfy all requirements for KCSAN:
https://lore.kernel.org/lkml/20200515150338.190344-7-elver@google.com/
gcc/ChangeLog:
* gimplify.c (gimplify_function_tree): Optimize and do not emit
IFN_TSAN_FUNC_EXIT in a finally block if we do not need it.
* params.opt: Add --param=tsan-instrument-func-entry-exit=.
* tsan.c (instrument_memory_accesses): Make
fentry_exit_instrument bool depend on new param.
gcc/testsuite/ChangeLog:
* c-c++-common/tsan/func_entry_exit.c: New test.
* c-c++-common/tsan/func_entry_exit_disabled.c: New test.
