[Ada] Temporarily disable Ada 2022 Image and Put_Image support for tagged types

gcc/ada/

* exp_put_image.adb:
(Enable_Put_Image, Preload_Root_Buffer_Type): Revert to querying
the -gnatd_z switch, as opposed to testing whether Ada_Version >= Ada_2022.

[Ada] INOX: prototype alternative accessibility model

gcc/ada/

* checks.adb (Accessibility_Checks_Suppressed): Add check
against restriction No_Dynamic_Accessibility_Checks.
(Apply_Accessibility_Check): Add assertion to check restriction
No_Dynamic_Accessibility_Checks is not active.
* debug.adb: Add documentation for new debugging switch to
control which accessibility model gets employed under
restriction No_Dynamic_Accessibility_Checks.
* exp_attr.adb (Expand_N_Attribute_Reference): Disable dynamic
accessibility check generation when
No_Dynamic_Accessibility_Checks is active.
* exp_ch4.adb (Apply_Accessibility_Check): Skip check generation
when restriction No_Dynamic_Accessibility_Checks is active.
(Expand_N_Allocator): Disable dynamic accessibility checks when
No_Dynamic_Accessibility_Checks is active.
(Expand_N_In): Disable dynamic accessibility checks when
No_Dynamic_Accessibility_Checks is active.
(Expand_N_Type_Conversion): Disable dynamic accessibility checks
when No_Dynamic_Accessibility_Checks is active.
* exp_ch5.adb (Expand_N_Assignment_Statement): Disable
alternative accessibility model calculations when computing a
dynamic level for a SAOAAT.
* exp_ch6.adb (Add_Call_By_Copy_Code): Disable dynamic
accessibility check generation when
No_Dynamic_Accessibility_Checks is active.
(Expand_Branch): Disable alternative accessibility model
calculations.
(Expand_Call_Helper): Disable alternative accessibility model
calculations.
* restrict.adb, restrict.ads: Add new restriction
No_Dynamic_Accessibility_Checks.
(No_Dynamic_Accessibility_Checks_Enabled): Created to test when
experimental features (which are generally incompatible with
standard Ada) can be enabled.
* sem_attr.adb (Safe_Value_Conversions): Add handling of new
accessibility model under the restriction
No_Dynamic_Accessibility_Checks.
* sem_prag.adb (Process_Restrictions_Or_Restriction_Warnings):
Disallow new restriction No_Dynamic_Accessibility_Checks from
being exclusively specified within a body or subunit without
being present in a specification.
* sem_res.adb (Check_Fully_Declared_Prefix): Minor comment
fixup.
(Valid_Conversion): Omit implicit conversion checks on anonymous
access types and perform static checking instead when
No_Dynamic_Accessibility_Checks is active.
* sem_util.adb, sem_util.ads (Accessibility_Level): Add special
handling of anonymous access objects, formal parameters,
anonymous access components, and function return objects.
(Deepest_Type_Access_Level): When
No_Dynamic_Accessibility_Checks is active employ an alternative
model. Add paramter Allow_Alt_Model to override the new behavior
in certain cases.
(Type_Access_Level): When No_Dynamic_Accessibility_Checks is
active employ an alternative model. Add parameter
Allow_Alt_Model to override the new behavior in certain cases.
(Typ_Access_Level): Created within Accessibility_Level for
convenience.
* libgnat/s-rident.ads, snames.ads-tmpl: Add handing for
No_Dynamic_Accessibility_Checks.

[Ada] The Unix Epochalypse of 2038 - Use OS_Time

gcc/ada/

* adaint.h (__gnat_set_file_time_name): Use OS_Time.
* adaint.c (__gnat_set_file_time_name): Likewise.

[Ada] The Unix Epochalyse of 2038 - OS_Time

gcc/ada/

* adaint.h (OS_Time): typedef as long long.
* osint.adb (Underlying_OS_Time): Declare as 64-bit signed type.
* libgnat/s-os_lib.adb ("<"): Compare OS_Time as
Long_Long_Integer.
("<="): Likewise.
(">"): Likewise.
(">="): Likewise.
* libgnat/s-os_lib.ads (OS_Time): Declare as 64-bit signed type.

[Ada] Move overriding rename error message from declaration to use

gcc/ada/

* sem_ch3.adb (Check_Abstract_Overriding): Post error message on
renaming node.

[Ada] Adapt SPARK checking after change in rules regarding heap modeling

gcc/ada/

* libgnat/a-uncdea.ads: Add Depends/Post to
Ada.Unchecked_Deallocation.
* sem_ch4.adb (Analyze_Allocator): Remove checking of allocator
placement.
* sem_res.adb (Flag_Object): Same.

[Ada] Turn GNAT_Annotate into its own pragma

gcc/ada/

* aspects.ads: Add GNAT_Annotate aspect.
* gnat1drv.adb (Adjust_Global_Switches): Stop defining
Name_Gnat_Annotate as an alias of Name_Annotate.
* snames.ads-tmpl: Define Gnat_Annotate.
* par-prag.adb, sem_prag.ads: Add Pragma_Gnat_Annotate to list
of pragmas.
* lib-writ.adb, sem_ch13.adb, sem_prag.adb: Handle Gnat_Annotate
like Aspect_Annotate.

[Ada] Fix comment about the debug flag for strict alignment

gcc/ada/

* ttypes.ads (Target_Strict_Alignment): Fix comment.

[Ada] Cleanup checking for compatible alignment

gcc/ada/

* sem_util.adb (Has_Compatible_Alignment_Internal): Fix
indentation of ELSIF comments; remove explicit calls to
UI_To_Int; remove extra parens around the MOD operand.

[Ada] Spurious error in instantiation with aggregate and private ancestor

gcc/ada/

* sem_aggr.adb (Resolve_Record_Aggregate, Step_5): Do not check
for the need to use an extension aggregate for a given component
when within an instance and the type of the component hss a
private ancestor: the instantiation is legal if the generic
compiles, and spurious errors may be generated otherwise.

[Ada] Print JSON continuation messages as separate messages

gcc/ada/

* errout.adb (Output_JSON_Message): Recursively call
Output_JSON_Message for continuation messages instead of
appending their content to the initial message.

[Ada] Add Ada 2022 Image and Put_Image support for tagged types

gcc/ada/

* debug.adb: Remove comments about -gnatd_z switch.
* exp_ch3.adb (Make_Predefined_Primitive_Specs): A one-line fix
for a subtle bug that took some effort to debug. Append a new
Put_Image procedure for a type extension even if it seems to
already have one, just as is done for (for example) the
streaming-related Read procedure.
* exp_put_image.adb:
(Build_Record_Put_Image_Procedure.Make_Component_Attributes): Do
not treat _Parent component like just another component, for two
reasons.  1. If the _parent component's type has a
user-specified Put_Image procedure, then we want to generate a
call to that procedure and then generate extension aggregate
syntax.  2. Otherwise, we still don't want to see any mention of
"_parent" in the generated image text.
(Build_Record_Put_Image_Procedure.Make_Component_Name): Add
assertion that we are not generating a reference to an "_parent"
component.
(Build_Record_Put_Image_Procedure): Add special treatment for
null records.  Add call to Duplicate_Subexpr for image attribute
prefix in order to help with expansion needed in the class-wide
case (where the prefix is also referenced in the call to
Wide_Wide_Expanded_Name) if evaluation of the prefix has side
effects. Add new local helper function, Put_String_Exp.  Add
support for case where prefix type is class-wide.
(Enable_Put_Image, Preload_Root_Buffer_Type): Query Ada_Version
> Ada_2022 instead of (indirectly) querying -gnatd_z switch.
* freeze.adb (In_Expanded_Body): A one-line change to add
TSS_Put_Image to the list of subprograms that have
expander-created bodies.
* rtsfind.ads: Add support for accessing
Ada.Tags.Wide_Wide_Expanded_Name.
* sem_ch3.ads, sem_ch3.adb: Delete Is_Null_Extension function,
as part of moving it to Sem_Util.
* sem_ch13.adb
(Analyze_Put_Image_TSS_Definition.Has_Good_Profile): Improve
diagnostic messages in cases where the result is going to be
False and the Report parameter is True. Relax overly-restrictive
checks in order to implement mode conformance.
(Analyze_Stream_TSS_Definition.Has_Good_Profile): Add similar
relaxation of parameter subtype checking for the Stream
parameter of user-defined streaming subprograms.
* sem_disp.adb (Check_Dispatching_Operation): A one-line
change (and an accompanying comment change) to add TSS_Put_Image
to the list of compiler-generated dispatching primitive
operations.
* sem_util.ads, sem_util.adb: Add Ignore_Privacy Boolean
parameter to Is_Null_Record_Type function (typically the
parameter will be False when the function is being used in the
implementation of static semantics and True for dynamic
semantics; the parameter might make a difference in the case of,
for example, a private type that is implemented as a null record
type).  Add related new routines Is_Null_Extension (formerly
declared in Sem_Ch3), Is_Null_Extension_Of, and
Is_Null_Record_Definition.

[Ada] Fix crash when printing error message

gcc/ada/

* freeze.adb (Freeze_Profile): Use N's Sloc, F_type's chars.

[Ada] Clean up Get_Index_Bounds

gcc/ada/

* checks.adb, exp_aggr.adb, exp_ch5.adb, freeze.adb,
sem_util.adb, sem_util.ads: Change L and H to be First and Last,
to match the attributes in the RM. Change calls from procedure
to function where appropriate.

[Ada] Refactoring related to Returns_By_Ref

gcc/ada/

* sem_util.ads, sem_util.adb (Compute_Returns_By_Ref): New
procedure to compute Returns_By_Ref, to avoid some code
duplication. This will likely change soon, so it's good to have
the code in one place.
(CW_Or_Has_Controlled_Part): Move here from Exp_Ch7, because
it's called by Compute_Returns_By_Ref, and this is a better
place for it anyway.
(Needs_Finalization): Fix comment to be vague instead of wrong.
* exp_ch6.adb (Expand_N_Subprogram_Body, Freeze_Subprogram):
Call Compute_Returns_By_Ref.
* sem_ch6.adb (Check_Delayed_Subprogram): Call
Compute_Returns_By_Ref.
* exp_ch7.ads, exp_ch7.adb (CW_Or_Has_Controlled_Part): Move to
Sem_Util.
(Has_New_Controlled_Component): Remove unused function.

[Ada] Fix overriding subprogram being incorrectly seen as returning

gcc/ada/

* sem_ch3.adb (Check_Abstract_Overriding): Check for renamings.

[Ada] Do not catch 'N rem -1' in CodePeer_Mode

gcc/ada/

* exp_ch4.adb (Expand_N_Op_Rem): Remove special case for rem -1
in CodePeer_Mode.

testsuite: gcc.dg/debug/btf/btf-bitfields-3.c requires -fno-short-enums PR debug/101321

arm-eabi uses -fshort-enums by default while arm-linux-gnueabi* do not,
like most (all?) other targets, but this test relies -fno-short-enums.
Fix it by forcing -fno-short-enums.

2021-07-05  Christophe Lyon  <christophe.lyon@foss.st.com>

PR debug/101321
gcc/testsuite/
* gcc.dg/debug/btf/btf-bitfields-3.c: Add -fno-short-enums.

Do not set both LOOP_C_INFINITE and LOOP_C_FINITE on vectorized loop

The setting is likely a typo and was meant to affect the scalar version
but even there LOOP_C_INFINITE is at most an optimization to the
niter analysis.  Clearly setting it on the vectorized loop which we
just versioned to be _not_ infinite is bogus so the following change
removes this.

2021-07-05  Richard Biener  <rguenther@suse.de>

* tree-vect-loop-manip.c (vect_loop_versioning): Do not
set LOOP_C_INFINITE on the vectorized loop.

middle-end/101291 - set loop copy of versioned loop

This fixes the vectorizer loop versioning code failing to clear
niter related info on the scalar loop as it assumed get_loop_copy
would work even for the outermost loop.  The patch makes that
assumption hold by adjusting the loop versioning code.

2021-07-05  Richard Biener  <rguenther@suse.de>

PR middle-end/101291
* cfgloopmanip.c (loop_version): Set the loop copy of the
versioned loop to the new loop.

testsuite/101299 - add missing vect_double requires to bb-slp-74.c

This should fix the FAIL of gcc.dg/vect/bb-slp-74.c on arm.

2021-07-05  Richard Biener  <rguenther@suse.de>

PR testsuite/101299
* gcc.dg/vect/bb-slp-74.c: Add vect_double requires.

Remove xfail for pr92658-avx512vl.c

Typo of standard pattern name has been fixed by r12-1970, remove those
xfails.

gcc/testsuite/ChangeLog

* gcc.target/i386/pr92658-avx512vl.c: Refine testcase.

Daily bump.

Darwin, config : Adjust X86 biarch definitions ordering [PR100269].

This reorganises the biarch definitions to cater for the
macro changes and removals at r12-36.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
PR target/100269 - [12 Regression] i686 biarch compiler fails for Darwin after r12-36.

        PR target/100269

gcc/ChangeLog:

PR target/100269
* config.gcc: Ensure that Darwin biarch definitions are
added before i386.h.
* config/i386/darwin.h (TARGET_64BIT): Remove.
(PR80556_WORKAROUND): New.
(REAL_LIBGCC_SPEC): Amend to use PR80556_WORKAROUND.
(DARWIN_SUBARCH_SPEC): New.
* config/i386/darwin32-biarch.h (TARGET_64BIT_DEFAULT,
TARGET_BI_ARCH, PR80556_WORKAROUND): New.
(REAL_LIBGCC_SPEC): Remove.
* config/i386/darwin64-biarch.h (TARGET_64BIT_DEFAULT,
TARGET_BI_ARCH, PR80556_WORKAROUND): New.
(REAL_LIBGCC_SPEC): Remove.

Daily bump.

testsuite: Disable BTF and CTF testsuite on AIX.

CTF utilizes DWARF sections, but it is a distinct debugging
format.  The CTF support in GCC is not implemented as a
separate debugging format.  AIX supports DWARF but not CTF
section.

The GCC testsuite test for target support of a debugging format
checks if GCC itself emits an error message, not if the
debugging output compiles correctly.  Because CTF is not
a distinct debugging format, GCC does not distinguish support
for targets and does not have the ability to produce an error
message.

This patch skips the CTF and BTF debug directories, and
explicitly reports that AIX doesn't support CTF.  Currently the
        dejagnu code to skip multiple debugging levels for CTF does
        not ensure that CTF is a supported debugging format. The patch
also shifts the CTF options logic to within the test that CTF
debug format is supported.

Bootstrapped on powerpc-ibm-aix7.2.3.0 and powerpc64le-linux.

gcc/testsuite/ChangeLog:

* gcc.dg/debug/btf/btf.exp: Skip on AIX.
* gcc.dg/debug/ctf/ctf.exp: Skip on AIX.
* lib/gcc-dg.exp (gcc-dg-target-supports-debug-format): AIX
doesn't support CTF.
(gcc-dg-debug-runtest): Move CTF support within
target support format test.

Don't use vec_duplicate on vector in CTOR expansion

Since vec_duplicate only works on scalar, don't use it on vector in
store constructor expansion.

gcc/

PR middle-end/101294
* expr.c (store_constructor): Don't use vec_duplicate on vector.

gcc/testsuite/

PR middle-end/101294
* gcc.dg/pr101294.c: New test.

d: Missed RVO optimization with non-POD structs

The D front-end semantic pass sometimes declares a temporary inside a
return expression.  This is now detected with the RESULT_DECL replacing
the temporary, allowing for RVO to be done.

PR d/101273

gcc/d/ChangeLog:

* toir.cc (IRVisitor::visit (ReturnStatement *)): Detect returns that
use a temporary, and replace with return value.

gcc/testsuite/ChangeLog:

* gdc.dg/torture/pr101273.d: New test.

Daily bump.

d: RHS value lost when a target_expr modifies LHS in a cond_expr

To prevent the RHS of an assignment modifying the LHS before the
assignment proper, a target_expr is forced so that function calls that
return with slot optimization modify the temporary instead.  This did
not work for conditional expressions however, to give one example.  So
now the RHS is always forced to a temporary.

PR d/101282

gcc/d/ChangeLog:

* d-codegen.cc (build_assign): Force target_expr on RHS for non-POD
assignment expressions.

gcc/testsuite/ChangeLog:

* gdc.dg/torture/pr101282.d: New test.

Improve warning suppression for inlined functions [PR98512].

Resolves:
PR middle-end/98871 - Cannot silence -Wmaybe-uninitialized at declaration site
PR middle-end/98512 - #pragma GCC diagnostic ignored ineffective in conjunction with alias attribute

gcc/ChangeLog:

PR middle-end/98871
PR middle-end/98512
* diagnostic.c (get_any_inlining_info): New.
(update_effective_level_from_pragmas): Handle inlining context.
(diagnostic_enabled): Same.
(diagnostic_report_diagnostic): Same.
* diagnostic.h (struct diagnostic_info): Add ctor.
(struct diagnostic_context): Add new member.
* tree-diagnostic.c (set_inlining_locations): New.
(tree_diagnostics_defaults): Set new callback pointer.

openmp: Initial support for OpenMP directives expressed as C++11 attributes

This is an OpenMP 5.1 feature, but I think it is something very useful for
OpenMP users, so I'm committing it now instead of waiting until all 5.0
work is done.

The support is incomplete, only attributes on statements (or block local
declarations) are supported right now, while for non-executable directives
they should be also supported at namespace scope and at class scope, and
for declarations in all places that appertain to the declarations rather
than e.g. types.

I need to also fix up handling of C++11 non-OpenMP attributes mixed with
OpenMP attributes before block local declarations (currently it throws
them away), probably reject if the directives appertain to labels etc.

In order not to complicate all the OpenMP directive parsing, it is done
by remembering the tokens from the attribute, slightly adjusting them and
feeding them through a temporary new lexer to cp_parse_pragma.

2021-07-02  Jakub Jelinek  <jakub@redhat.com>

gcc/c-family/
* c-common.h (enum c_omp_directive_kind): New enum.
(struct c_omp_directive): New type.
(c_omp_categorize_directive): Declare.
* c-omp.c (omp_directives): New variable.
(c_omp_categorize_directive): New function.
gcc/cp/
* parser.h (struct cp_lexer): Add in_omp_attribute_pragma member.
(struct cp_omp_declare_simd_data): Likewise.
* cp-tree.h (enum cp_tree_index): Add CPTI_OMP_IDENTIFIER.
(omp_identifier): Define.
* parser.c (cp_parser_skip_to_pragma_eol): Handle
in_omp_attribute_pragma CPP_PRAGMA_EOL followed by CPP_EOF.
(cp_parser_require_pragma_eol): Likewise.
(struct cp_omp_attribute_data): New type.
(cp_parser_handle_statement_omp_attributes): New function.
(cp_parser_statement): Handle OpenMP directives in statement's
attribute-specifier-seq.
(cp_parser_omp_directive_args, cp_parser_omp_sequence_args): New
functions.
(cp_parser_std_attribute): Handle omp::directive and omp::sequence
attributes.
(cp_parser_omp_all_clauses): If in_omp_attribute_pragma, allow
a comma also before the first clause.
(cp_parser_omp_allocate): Likewise.
(cp_parser_omp_atomic): Likewise.
(cp_parser_omp_depobj): Likewise.
(cp_parser_omp_flush): Likewise.
(cp_parser_omp_ordered): Likewise.
(cp_parser_omp_declare_simd): Save in_omp_attribute_pragma
into struct cp_omp_declare_simd_data.
(cp_finish_omp_declare_variant): Add in_omp_attribute_pragma
argument.  If set, allow a comma also before match clause.
(cp_parser_late_parsing_omp_declare_simd): If in_omp_attribute_pragma,
allow a comma also before the first clause.  Adjust
cp_finish_omp_declare_variant caller.
(cp_parser_omp_declare_target): If in_omp_attribute_pragma, allow
a comma also before the first clause.
(cp_parser_omp_declare_reduction_exprs): Likewise.
(cp_parser_omp_requires): Likewise.
* decl.c (initialize_predefined_identifiers): Initialize
omp_identifier.
* decl2.c (cplus_decl_attributes): Reject omp::directive and
omp::sequence attributes.
gcc/testsuite/
* g++.dg/gomp/attrs-1.C: New test.
* g++.dg/gomp/attrs-2.C: New test.
* g++.dg/gomp/attrs-3.C: New test.

openmp: Reject #pragma omp atomic update, [PR101297]

I've noticed that we allow a trailing comma on OpenMP atomic construct
if there is at least one clause.  Commas should be only allowed to
separate the clauses (or in OpenMP 5.1 to separate directive name
from the clauses).

2021-07-02  Jakub Jelinek  <jakub@redhat.com>

PR c/101297
* c-parser.c (c_parser_omp_atomic): Consume comma only if it
appears before a CPP_NAME.

* parser.c (cp_parser_omp_atomic): Consume comma only if it
appears before a CPP_NAME.

* c-c++-common/gomp/atomic-24.c: New test.

c++: unqualified member template in constraint [PR101247]

Here any_template_parm_r is failing to mark the template parameters
implicitly used by the unqualified use of 'd' inside the constraint
because the code to do so assumes each level of a template parameter
list points to the corresponding primary template, but here the
parameter level for A in the out-of-line definition of A::B does not
(nor do the parameter levels for A and C in the definition of A::C),
which causes us to overlook the sharing.

So it seems we can't in general depend on the TREE_TYPE of a template
parameter level being non-empty here.  This patch partially fixes this
by rewriting the relevant part of any_template_parm_r to not depend on
the TREE_TYPE of outer levels.  We still depend on the innermost level
to point to the innermost primary template, so we still crash on the
commented out line in the below testcase.

PR c++/101247

gcc/cp/ChangeLog:

* pt.c (any_template_parm_r) <case TEMPLATE_DECL>: Rewrite to
use common_enclosing_class and to not depend on the TREE_TYPE
of outer levels pointing to the corresponding primary template.

gcc/testsuite/ChangeLog:

* g++.dg/cpp2a/concepts-memtmpl4.C: New test.

rs6000: Add MMA __builtin_vsx_lxvp and __builtin_vsx_stxvp built-ins

Add support for the __builtin_vsx_lxvp and __builtin_vsx_stxvp built-ins
to keep in sync with LLVM which added these earlier.

2021-07-02  Peter Bergner  <bergner@linux.ibm.com>

gcc/
* config/rs6000/rs6000-builtin.def (BU_MMA_PAIR_LD, BU_MMA_PAIR_ST):
New macros.
(__builtin_vsx_lxvp, __builtin_vsx_stxvp): New built-ins.
* config/rs6000/rs6000-call.c (rs6000_gimple_fold_mma_builtin): Expand
lxvp and stxvp built-ins.
(mma_init_builtins): Handle lxvp and stxvp built-ins.
(builtin_function_type): Likewise.
* doc/extend.texi (__builtin_vsx_lxvp, __builtin_mma_stxvp): Document.

gcc/testsuite/
* gcc.target/powerpc/mma-builtin-7.c: New test.
* gcc.target/powerpc/mma-builtin-8.c: New test.

Use shift instructions to eliminate redundant compare/test instructions on the H8

gcc/ChangeLog

* config/h8300/h8300-protos.h (compute_a_shift_cc): Accept
additional argument for the code.
* config/h8300/h8300.c (compute_a_shift_cc): Accept additional
argument for the code.  Just return if the ZN bits are useful or
not rather than the old style CC_* enums.
* config/h8300/shiftrotate.md (shiftqi_noscratch): Move before
more generic shiftqi patterns.
(shifthi_noscratch, shiftsi_noscratch): Similarly.
(shiftqi_noscratch_set_flags): New pattern.
(shifthi_noscratch_set_flags, shiftsi_noscratch_set_flags): Likewise.

Fix build_gt and build_lt for signed 1 bit values.

Signed 1 bit values have a range of [-1, 0] but neither (0 - 1) nor (-1 + 1)
can be represented.  For signed values, add or subtract -1 as appropriate.

PR tree-optimization/101223
gcc/
* range-op.cc (build_lt): Add -1 for signed values.
(built_gt): Subtract -1 for signed values.

gcc/testsuite/
* gcc.dg/pr101223.c: New.

BTF: Support for BTF_KIND_FLOAT

Add BTF_KIND_FLOAT, a new BTF type kind which has recently stabilized in
the linux kernel [1]. This kind is used for encoding floating point
types, and is of particular use when generating BTF for some s390
arch-specific kernel headers.

Also update some BTF tests which previously used floating point types to
check correct behavior for types with no BTF representation.

[1]: https://github.com/torvalds/linux/commit/b1828f0b04828aa8cccadf00a702f459caefeed9

include/ChangeLog:

* btf.h (struct btf_type): Update bit usage comment.
(BTF_INFO_KIND): Update bit mask.
(BTF_KIND_FLOAT): New define.
(BTF_KIND_MAX): Update.

gcc/ChangeLog:

* btfout.c (get_btf_kind): Support BTF_KIND_FLOAT.
(btf_asm_type): Likewise.

gcc/testsuite/ChangeLog:

* gcc.dg/debug/btf/btf-float-1.c: New test.
* gcc.dg/debug/btf/btf-function-3.c: Use different unrepresentable type.
* gcc.dg/debug/btf/btf-struct-2.c: Likewise.
* gcc.dg/debug/btf/btf-variables-2.c: Likewise.

Preparing to use shifts to eliminate redundant test/compare insns on H8

* config/h8300/h8300-protos.h (output_a_shift): Make first argument
an array of rtx rather than a pointer to rtx.  Add code argument.
(compute_a_shift_length): Similarly.
* config/h8300/h8300.c (h8300_shift_costs): Adjust now that the
shift itself isn't an operand.  Create dummy operand[0] to carry
a mode and pass a suitable rtx code to compute_a_shift_length.
(get_shift_alg): Adjust operand number of clobber in output templates.
(output_a_shift): Make first argument an array of rtx rather than
a pointer to rtx.  Add code argument for the type of shift.
Adjust now that the shift itself is no longer an operand.
(compute_a_shift_length): Similarly.
* config/h8300/shiftrotate.md (shiftqi, shifthi, shiftsi): Use an
iterator rather than nshift_operator.
(shiftqi_noscratch, shifthi_noscratch, shiftsi_noscratch): Likewise.
(shiftqi_clobber_flags): Adjust to API changes in output_a_shift
and compute_a_shift_length.
(shiftqi_noscratch_clobber_flags): Likewise.
(shifthi_noscratch_clobber_flags): Likewise.
(shiftsi_noscratch_clobber_flags): Likewise.

Darwin, CTF, BTF: Do not run the DWARF debug link for BTF/CTF [PR101283].

Darwin uses an efficient two-stage process for debug linking.
The static linker (ld64) notes the inputs required but does not
link the debug.  When required / on demand the debug is linked
into a separate package by the debug linker (dsymutil).  At
present none of the Darwin tools consume or understand BTF/CTF.
The static linker silently accepts the sections (but will not
act on them as containing anything to be processed).

However, the debug linker produces a warning that it has been
presented with input with no [DWARF] debug content:
warning: no debug symbols in executable (-arch x86_64).

This causes several testsuite fails with excess errors.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
PR debug/101283 - Several tests fail on Darwin with -gctf/gbtf

PR debug/101283

gcc/ChangeLog:

* config/darwin.h (DSYMUTIL_SPEC): Do not try to run
dsymutil for BTF/CTF.

Darwin, BTF: Provide a suitable section name for BTF [PR101283].

In a similar manner to r12-1960-gcc8453012f75d, this provides a
placeholder section name for BTF data.  This change groups BTF
and CTF debug formats in the same segment, but keeps them in
separate sections.

As per the CTF section designation, this should be agreed or
amended to an agreed form before GCC 12 ships.

Signed-off-by: Iain Sandoe <iain@sandoe.co.uk>
PR debug/101283 - Several tests fail on Darwin with -gctf/gbtf

PR debug/101283

gcc/ChangeLog:

* config/darwin.h (CTF_INFO_SECTION_NAME): Update the
segment to include BTF.
(BTF_INFO_SECTION_NAME): New.

Fix m32r target specific fallout from recent int->bool changes

gcc/ChangeLog

* config/m32r/m32r-protos.h (call_operand): Adjust return type.
(small_data_operand, memreg_operand, small_insn_p): Likewise.
* config/m32r/m32r.c (call_operand): Adjust return type.
(small_data_operand, memreg_operand): Likewise.

Fix frv target specific fallout from recent int->bool changes

gcc/ChangeLog

* config/frv/frv-protos.h  (integer_register_operand): Adjust return
type.
(frv_load_operand, gpr_or_fpr_operand, gpr_no_subreg_operand): Likewise.
(fpr_or_int6_operand, gpr_or_int_operand); Likewise.
(gpr_or_int12_operand, gpr_or_int10_operand); Likewise.
(move_source_operand, move_destination_operand): Likewise.
(condexec_source_operand, condexec_dest_operand): Likewise.
(lr_operand, gpr_or_memory_operand, fpr_or_memory_operand): Likewise.
(reg_or_0_operand, fcc_operand, icc_operand, cc_operand): Likewise.
(fcr_operand, icr_operand, cr_operand, call_operand): Likewise.
(fpr_operand, even_reg_operand, odd_reg_operand): Likewise.
(even_gpr_operand, odd_gpr_operand, quad_fpr_operand): Likewise.
(even_fpr_operand, odd_fpr_operand): Likewise.
(dbl_memory_one_insn_operand, dbl_memory_two_insn_operand): Likewise.
(int12_operand, int6_operand, int5_operand, uint5_operand): Likewise.
(uint4_operand, uint1_operand, int_2word_operand): Likewise
(upper_int16_operand, uint16_operand, symbolic_operand): Likewise.
(relational_operator, float_relational_operator): Likewise.
(ccr_eqne_operator, minmax_operator): Likewise.
(condexec_si_binary_operator, condexec_si_media_operator): Likewise.
(condexec_si_divide_operator, condexec_si_unary_operator): Likewise.
(condexec_sf_conv_operator, condexec_sf_add_operator): Likewise.
(intop_compare_operator, acc_operand, even_acc_operand): Likewise.
(quad_acc_operand, accg_operand): Likewise.

Add description of how testsuite parallelization works

... for the benefit of the next poor soul who will need to debug it.

gcc/testsuite/
* lib/gcc-defs.exp: Add a comment.

Fix xstormy16 target specific fallout from recent int->bool changes

gcc/
* config/stormy16/stormy16-protos.h (xstormy16_below_100_symbol): Change
return type to a bool.
(nonimmediate_nonstack_operand): Likewise.
(xstormy16_splittable_below100_operand): Likewise.
* config/stormy16/stormy16.c (xstormy16_below_100_symbol): Fix
return type.
(xstormy16_splittable_below100_operand): Likewise.

tree-optimization/101293 - further enhance LIMs ref canonicalization

This makes sure to handle MEM[p + 4] and MEM[p].j with j at offset 4
as the same ref in store motion.  For hashing we need to be
more restrictive in what we handle since there's no poly-int
handlers for inchash.  For comparison we can compare poly_offsets directly.

2021-07-02  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101293
* tree-ssa-loop-im.c (mem_ref_hasher::equal): Compare MEM_REF bases
with combined offsets.
(gather_mem_refs_stmt): Hash MEM_REFs as if their offset were
combined with the rest of the offset.

* gcc.dg/tree-ssa/ssa-lim-15.c: New testcase.

libstdc++: Revert changes to std::unique_ptr<T[]>::operator[] [PR 101271]

This reverts the changes in r12-1778 which added a noexcept-specifier to
std::unique_ptr<T[]>::operator[], and the changes in r12-1844 which
tried to make it work with incomplete types (for PR 101236).

The noexcept-specifier is not required by the standard, and is causing
regressions, so just remove it.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:

PR libstdc++/101271
* include/bits/unique_ptr.h (unique_ptr<T[],D>::operator[]):
Remove noexcept-specifier.
(unique_ptr<T[],D>::_S_nothrow_deref): Remove.
* testsuite/20_util/unique_ptr/lwg2762.cc: Remove checks for
operator[].

Change EH pointer encodings to PC relative on Windows

A big difference between ELF and PE-COFF is that, with the latter, you can
build position-independent executables or DLLs without generating PIC; as
a  matter of fact, flag_pic has historically been forced to 0 for 32-bit:

/* Don't allow flag_pic to propagate since gas may produce invalid code
   otherwise.  */

\
do {
        \
  flag_pic = TARGET_64BIT ? 1 : 0; \
} while (0)

The reason is that the linker builds a .reloc section that collects the
absolute relocations in the generated binary, and the loader uses them to
relocate it at load time if need be (e.g. if --dynamicbase is enabled).

Up to binutils 2.35, the GNU linker didn't build the .reloc section for
executables and defaulted to --enable-auto-image-base for DLLs, which means
that DLLs had an essentially unique load address and, therefore, need not
be relocated by the loader in most cases.

With binutils 2.36 and later, the GNU linker builds a .reloc section for
executables (thus making them PIE), --enable-auto-image-base is disabled
and --dynamicbase is enabled by default, which means that essentially all
the binaries are relocated at load time.

This badly breaks the 32-bit compiler configured to use DWARF-2 EH because
the loader corrupts the .eh_frame section when processing the relocations
contained in the .reloc section.

gcc/
* config/i386/i386.c (asm_preferred_eh_data_format): Always use the
PIC encodings for PE-COFF targets.

i386: Punt on broadcasts from TImode integers [PR101286]

ix86_expand_vector_init_duplicate doesn't handle TImode -> V2TImode
or TImode -> V4TImode broadcasts, so I think we should punt on TImode
inner mode in ix86_broadcast_from_integer_constant, otherwise we ICE
in ix86_expand_vector_move when ix86_broadcast_from_integer_constant
returns non-NULL and ix86_expand_vector_init_duplicate returns false.

In theory TImode element broadcasts could be handled by some permutations,
but I'm not sure it is worth it.

2021-07-02  Jakub Jelinek  <jakub@redhat.com>

PR target/101286
* config/i386/i386-expand.c (ix86_broadcast_from_integer_constant):
Return nullptr for TImode inner mode.

* gcc.target/i386/avx2-pr101286.c: New test.

tree-optimization/101280 - re-revise interchange fix for PR101173

The following fixes up the revision of the original fix for PR101173
to properly guard all dependence checks with DDR_REVERSED_P or its
inverse.

2021-07-01  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101280
PR tree-optimization/101173
* gimple-loop-interchange.cc
(tree_loop_interchange::valid_data_dependences): Properly
guard all dependence checks with DDR_REVERSED_P or its
inverse.

Clear odata for aes(enc|dec)(wide)?kl intrinsics when ZF is set.

For Keylocker aesenc/aesdec intrinsics, current implementation
moves idata to odata unconditionally, which causes safety issue when
the instruction meets runtime error. So we add a branch to clear
odata when ZF is set after instruction exectution.

gcc/ChangeLog:

* config/i386/i386-expand.c (ix86_expand_builtin):
Add branch to clear odata when ZF is set for asedecenc_expand
and wideaesdecenc_expand.

gcc/testsuite/ChangeLog:

* gcc.target/i386/keylocker-aesdec128kl.c: Update test.
* gcc.target/i386/keylocker-aesdec256kl.c: Likewise.
* gcc.target/i386/keylocker-aesdecwide128kl.c: Likewise.
* gcc.target/i386/keylocker-aesdecwide256kl.c: Likewise.
* gcc.target/i386/keylocker-aesenc128kl.c: Likewise.
* gcc.target/i386/keylocker-aesenc256kl.c: Likewise.
* gcc.target/i386/keylocker-aesencwide128kl.c: Likewise.
* gcc.target/i386/keylocker-aesencwide256kl.c: Likewise.

Update gen_autofdo_event.py and gcc-auto-profile.

gen_autofdo_event.py was stumbling on models with stepping so
I updated the script to handle this case similar to the code in
https://github.com/andikleen/pmu-tools/blob/c6a5f63aede19def8886d6a8b74d7a55c38ca947/event_download.py

The second change was to tolerate cases when the CPU supports PEBS but the
perf command with /p fails. This can happen in, e.g., a virtual machine.

I regenerated gcc-auto-profile using the updated script.

contrib/ChangeLog:

* gen_autofdo_event.py: handle stepping, non-working PEBS

gcc/ChangeLog:

* config/i386/gcc-auto-profile: regenerate

Fix typo in standard pattern name of trunc<mode><pmov_dst_4>2.

gcc/ChangeLog

* config/i386/sse.md (trunc<mode><pmov_dst_4>2): Refined to ..
(trunc<mode><pmov_dst_4_lower>2): this.

Daily bump.

soft-fp: Update soft-fp from glibc

This patch is updating soft-fp from glibc:

1. Add __extendhfxf2 to return an IEEE half converted to IEEE extended.
2. Add __truncxfhf2 to truncate IEEE extended into IEEE half.

These are needed by x86 _Float16 support.

* soft-fp/extendhfxf2.c: New file.
* soft-fp/truncxfhf2.c: Likewise.

input.c: move file caching globals to a new file_cache class

This moves some global state from input.c to a new file_cache class,
of which an instance is owned by global_dc.  Various state is also
made private.

No functional change intended.

gcc/ChangeLog:
* diagnostic.h (diagnostic_context::m_file_cache): New field.
* input.c (class fcache): Rename to...
(class file_cache_slot): ...this, making most members private and
prefixing fields with "m_".
(file_cache_slot::get_file_path): New accessor.
(file_cache_slot::get_use_count): New accessor.
(file_cache_slot::missing_trailing_newline_p): New accessor.
(file_cache_slot::inc_use_count): New.
(fcache_buffer_size): Move to...
(file_cache_slot::buffer_size): ...here.
(fcache_line_record_size): Move to...
(file_cache_slot::line_record_size): ...here.
(fcache_tab): Delete, in favor of global_dc->m_file_cache.
(fcache_tab_size): Move to file_cache::num_file_slots.
(diagnostic_file_cache_init): Update for move of fcache_tab
to global_dc->m_file_cache.
(diagnostic_file_cache_fini): Likewise.
(lookup_file_in_cache_tab): Convert to...
(file_cache::lookup_file): ...this.
(diagnostics_file_cache_forcibly_evict_file): Update for move of
fcache_tab to global_dc->m_file_cache, moving most of
implementation to...
(file_cache::forcibly_evict_file): ...this new function and...
(file_cache_slot::evict): ...this new function.
(evicted_cache_tab_entry): Convert to...
(file_cache::evicted_cache_tab_entry): ...this.
(add_file_to_cache_tab): Convert to...
(file_cache::add_file): ...this, moving bulk of implementation
to...
(file_cache_slot::create): ..this new function.
(file_cache::file_cache): New.
(file_cache::~file_cache): New.
(lookup_or_add_file_to_cache_tab): Convert to...
(file_cache::lookup_or_add_file): ..this new function.
(fcache::fcache): Rename to...
(file_cache_slot::file_cache_slot): ...this, adding "m_" prefixes
to fields.
(fcache::~fcache): Rename to...
(file_cache_slot::~file_cache_slot): ...this, adding "m_" prefixes
to fields.
(needs_read): Convert to...
(file_cache_slot::needs_read_p): ...this.
(needs_grow): Convert to...
(file_cache_slot::needs_grow_p): ...this.
(maybe_grow): Convert to...
(file_cache_slot::maybe_grow): ...this.
(read_data): Convert to...
(file_cache_slot::read_data): ...this.
(maybe_read_data): Convert to...
(file_cache_slot::maybe_read_data): ...this.
(get_next_line): Convert to...
(file_cache_slot::get_next_line): ...this.
(goto_next_line): Convert to...
(file_cache_slot::goto_next_line): ...this.
(read_line_num): Convert to...
(file_cache_slot::read_line_num): ...this.
(location_get_source_line): Update for moving of globals to
global_dc->m_file_cache.
(location_missing_trailing_newline): Likewise.
* input.h (class file_cache_slot): New forward decl.
(class file_cache): New.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

Fortran: set version field in CFI_cdesc_t to CFI_VERSION

When converting a GFC descriptor to a CFI descriptor, it was
incorrectly copying the version number from the former to the latter.
It should be using the value of CFI_VERSION instead (currently 1).
Going the other direction, the GFC version field is initialized to
zero elsewhere, so do that here too.

2021-06-30  Tobias Burnus  <tobias@codesourcery.com>
    Sandra Loosemore  <sandra@codesourcery.com>

libgfortran/
* runtime/ISO_Fortran_binding.c (cfi_desc_to_gfc_desc):
Initialize version field to 0.
(gfc_desc_to_cfi_desc): Initialize version field to CFI_VERSION.

Add IEEE 128-bit fp conditional move on PowerPC.

This patch adds the support for power10 IEEE 128-bit floating point conditional
move and for automatically generating min/max.

In this patch, I simplified things compared to previous patches.  Instead of
allowing any four of the modes to be used for the conditional move comparison
and the move itself could use different modes, I restricted the conditional
move to just the same mode.  I.e. you can do:

    _Float128 a, b, c, d, e, r;

    r = (a == b) ? c : d;

But you can't do:

    _Float128 c, d, r;
    double a, b;

    r = (a == b) ? c : d;

or:

    _Float128 a, b;
    double c, d, r;

    r = (a == b) ? c : d;

This eliminates a lot of the complexity of the code, because you don't have to
worry about the sizes being different, and the IEEE 128-bit types being
restricted to Altivec registers, while the SF/DF modes can use any VSX
register.

I did not modify the existing support that allowed conditional moves where
SFmode operands are compared and DFmode operands are moved (and vice versa).

I modified the test cases that I added to reflect this change.  I have also
fixed the test for not equal to use '!=' instead of '=='.

2021-07-01 Michael Meissner  <meissner@linux.ibm.com>

gcc/

* config/rs6000/rs6000.c (rs6000_maybe_emit_fp_cmove): Add IEEE
128-bit floating point conditional move support.
(have_compare_and_set_mask): Add IEEE 128-bit floating point
types.
* config/rs6000/rs6000.md (mov<mode>cc, IEEE128 iterator): New insn.
(mov<mode>cc_p10, IEEE128 iterator): New insn.
(mov<mode>cc_invert_p10, IEEE128 iterator): New insn.
(fpmask<mode>, IEEE128 iterator): New insn.
(xxsel<mode>, IEEE128 iterator): New insn.

gcc/testsuite/

* gcc.target/powerpc/float128-cmove.c: New test.
* gcc.target/powerpc/float128-minmax-3.c: New test.

libstdc++: Improvements to Doxygen markup

This attempst to improve the doxygen output to work around what seems to
be some bugs in doxygen (issues 8635 and 8638).

The @addtogroup command doesn't work for entities inside a nested
namespace (see 8635) so we need to close and reopen groups on entering
and elaving nested namespaces. This fixes the problem that
chrono::duration and chrono::time_point were not documented in the
"Time" documentation group. I am unable to make the path classes appear
as part of their relevant groups (File System and Filesystem TS), nor
the contents of <exception> or <system_error>. I have made some minor
improvements to the docs for those types, including starting to address
PR 97001 by adding @since to the doxygen comments.

This change also excludes the <experimental/bits/net.h> header from
Doxygen processing, so we don't get an unwanted "Networking-ts" group
in the documentation.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:

* doc/doxygen/doxygroups.cc: Fix docs for std::literals.
* doc/doxygen/user.cfg.in: Exclude the Networking TS header.
Add some more predefined macros.
* include/bits/fs_fwd.h: Move @addtogroup commands inside
namespaces. Add better documentation.
* include/bits/fs_path.h: Likewise.
* include/experimental/bits/fs_fwd.h: Likewise.
* include/experimental/bits/fs_path.h: Likewise.
* include/ext/throw_allocator.h: Fix typo and improve docs.
* include/std/chrono: Move @addtogroup commands.
* include/std/system_error: Move @addtogroup commands.
* libsupc++/exception: Improve documentation.
* libsupc++/exception.h: Add @since documentation.

Improve packed record layout support with -fdump-ada-spec

We cannot fully support packed record layout in -fdump-ada-spec, as packing
in C and Ada does not behave the same, so we issue a warning.  But simple
cases are OK and can actually be handled without much work.

gcc/c-family/
* c-ada-spec.c (packed_layout): New global variable.
(dump_ada_declaration): Set it upon seeing a packed record type.
Do not put the "aliased" keyword if it is set.
(dump_ada_structure): Add Pack aspect if it is set and clear it.
gcc/testsuite/
* c-c++-common/dump-ada-spec-14.c: Adjust dg-warning directive.

Fix duplicate name issues in output of -fdump-ada-spec #2

This extends the type name conflict detection mechanism to variables.

gcc/c-family/
* c-ada-spec.c (check_name): Rename into...
(check_type_name_conflict): ...this.  Minor tweak.
(dump_ada_function_declaration): Adjust to above renaming.
(dump_ada_array_domains): Fix oversight.
(dump_ada_declaration): Call check_type_name_conflict for variables.

Use intermediate integer type with proper signedness

This is a minor regression present on mainline and 11 branch, whereby the
value of the Enum_Rep attribute is always unsigned.

gcc/ada/
PR ada/101094
* exp_attr.adb (Get_Integer_Type): Return an integer type with the
same signedness as the input type.

Darwin: Define a suitable section name for CTF [PR101283]

This is a placeholder name ahead of any CTF implementation on
LLVM (which sets Darwin ABI).  Ideally, we would get agreement
on this choice (or any replacement) before GCC12 is shipped.

PR debug/101283 - Several tests fail on Darwin with -gctf

PR debug/101283

gcc/ChangeLog:

* config/darwin.h (CTF_INFO_SECTION_NAME): New.

x86: Add vec_duplicate<mode> expander

Add vec_duplicate<mode> expander for SSE2 if we can move from GPR to SSE
register directly.

* config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
Make it global.
* config/i386/i386-protos.h (ix86_expand_vector_init_duplicate):
New prototype.
* config/i386/sse.md (INT_BROADCAST_MODE): New mode iterator.
(vec_duplicate<mode>): New expander.

x86: Convert CONST_WIDE_INT/CONST_VECTOR to broadcast

1. Update move expanders to convert the CONST_WIDE_INT and CONST_VECTOR
operands to vector broadcast from an integer with AVX.
2. Add ix86_gen_scratch_sse_rtx to return a scratch SSE register which
won't increase stack alignment requirement and blocks transformation by
the combine pass.

A small benchmark:

https://gitlab.com/x86-benchmarks/microbenchmark/-/tree/memset/broadcast

shows that broadcast is a little bit faster on Intel Core i7-8559U:

$ make
gcc -g -I. -O2   -c -o test.o test.c
gcc -g   -c -o memory.o memory.S
gcc -g   -c -o broadcast.o broadcast.S
gcc -g   -c -o vec_dup_sse2.o vec_dup_sse2.S
gcc -o test test.o memory.o broadcast.o vec_dup_sse2.o
./test
memory      : 147215
broadcast   : 121213
vec_dup_sse2: 171366
$

broadcast is also smaller:

$ size memory.o broadcast.o
   text    data     bss     dec     hex filename
    132       0       0     132      84 memory.o
    122       0       0     122      7a broadcast.o
$

3. Update PR 87767 tests to expect integer broadcast instead of broadcast
from memory.
4. Update avx512f_cond_move.c to expect integer broadcast.

A small benchmark:

https://gitlab.com/x86-benchmarks/microbenchmark/-/tree/vpaddd/broadcast

shows that integer broadcast is faster than embedded memory broadcast:

$ make
gcc -g -I. -O2 -march=skylake-avx512   -c -o test.o test.c
gcc -g   -c -o memory.o memory.S
gcc -g   -c -o broadcast.o broadcast.S
gcc -o test test.o memory.o broadcast.o
./test
memory      : 425538
broadcast   : 375260
$

gcc/

PR target/100865
* config/i386/i386-expand.c (ix86_expand_vector_init_duplicate):
New prototype.
(ix86_byte_broadcast): New function.
(ix86_convert_const_wide_int_to_broadcast): Likewise.
(ix86_expand_move): Convert CONST_WIDE_INT to broadcast if mode
size is 16 bytes or bigger.
(ix86_broadcast_from_integer_constant): New function.
(ix86_expand_vector_move): Convert CONST_WIDE_INT and CONST_VECTOR
to broadcast if mode size is 16 bytes or bigger.
* config/i386/i386-protos.h (ix86_gen_scratch_sse_rtx): New
prototype.
* config/i386/i386.c (ix86_gen_scratch_sse_rtx): New function.

gcc/testsuite/

PR target/100865
* gcc.target/i386/avx512f-broadcast-pr87767-1.c: Expect integer
broadcast.
* gcc.target/i386/avx512f-broadcast-pr87767-5.c: Likewise.
* gcc.target/i386/avx512vl-broadcast-pr87767-1.c: Likewise.
* gcc.target/i386/avx512vl-broadcast-pr87767-5.c: Likewise.
* gcc.target/i386/avx512f_cond_move.c: Also pass
-mprefer-vector-width=512 and expect integer broadcast.
* gcc.target/i386/pr100865-1.c: New test.
* gcc.target/i386/pr100865-2.c: Likewise.
* gcc.target/i386/pr100865-3.c: Likewise.
* gcc.target/i386/pr100865-4a.c: Likewise.
* gcc.target/i386/pr100865-4b.c: Likewise.
* gcc.target/i386/pr100865-5a.c: Likewise.
* gcc.target/i386/pr100865-5b.c: Likewise.
* gcc.target/i386/pr100865-6a.c: Likewise.
* gcc.target/i386/pr100865-6b.c: Likewise.
* gcc.target/i386/pr100865-6c.c: Likewise.
* gcc.target/i386/pr100865-7a.c: Likewise.
* gcc.target/i386/pr100865-7b.c: Likewise.
* gcc.target/i386/pr100865-7c.c: Likewise.
* gcc.target/i386/pr100865-8a.c: Likewise.
* gcc.target/i386/pr100865-8b.c: Likewise.
* gcc.target/i386/pr100865-8c.c: Likewise.
* gcc.target/i386/pr100865-9a.c: Likewise.
* gcc.target/i386/pr100865-9b.c: Likewise.
* gcc.target/i386/pr100865-9c.c: Likewise.
* gcc.target/i386/pr100865-10a.c: Likewise.
* gcc.target/i386/pr100865-10b.c: Likewise.
* gcc.target/i386/pr100865-11a.c: Likewise.
* gcc.target/i386/pr100865-11b.c: Likewise.
* gcc.target/i386/pr100865-11c.c: Likewise.
* gcc.target/i386/pr100865-12a.c: Likewise.
* gcc.target/i386/pr100865-12b.c: Likewise.
* gcc.target/i386/pr100865-12c.c: Likewise.

i386: Return true/false instead of 1/0 from predicates.

No functional changes.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

gcc/
* config/i386/predicates.md (ix86_endbr_immediate_operand):
Return true/false instead of 1/0.
(movq_parallel): Ditto.

Return true/false instead of 1/0 from generic predicates.

No functional changes.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

gcc/
* recog.c (general_operand): Return true/false instead of 1/0.
(register_operand): Ditto.
(immediate_operand): Ditto.
(const_int_operand): Ditto.
(const_scalar_int_operand): Ditto.
(const_double_operand): Ditto.
(push_operand): Ditto.
(pop_operand): Ditto.
(memory_operand): Ditto.
(indirect_operand): Ditto.

Change the type of predicates to bool.

The patch was tested on many targets, but some fallout is expected.
To fix the build error, simply change the function type from int to bool,
as was done in the patch for several targets.

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

gcc/
* genpreds.c (write_predicate_subfunction):
Change the type of written subfunction to bool.
(write_one_predicate_function):
Change the type of written function to bool.
(write_tm_preds_h): Ditto.
* recog.h (*insn_operand_predicate_fn): Change the type to bool.
* recog.c (general_operand): Change the type to bool.
(address_operand): Ditto.
(register_operand): Ditto.
(pmode_register_operand): Ditto.
(scratch_operand): Ditto.
(immediate_operand): Ditto.
(const_int_operand): Ditto.
(const_scalar_int_operand): Ditto.
(const_double_operand): Ditto.
(nonimmediate_operand): Ditto.
(nonmemory_operand): Ditto.
(push_operand): Ditto.
(pop_operand): Ditto.
(memory_operand): Ditto.
(indirect_operand): Ditto.
(ordered_comparison_operator): Ditto.
(comparison_operator): Ditto.

* config/i386/i386-expand.c (ix86_expand_sse_cmp):
Change the type of indirect predicate function to bool.

* config/rs6000/rs6000.c (easy_vector_constant):
Change the type to bool.

* config/mips/mips-protos.h (m16_based_address_p):
Change the type of operand 3 to bool.

tree-optimization/101280 - revise interchange fix for PR101173

The following revises the original fix for PR101173 to correctly
check for a reversed dependence rather than disallowing a zero
distance.  It also adds a check from TSVC which asks for this
kind of interchange (but with a valid dependence).

2021-07-01  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101280
PR tree-optimization/101173
* gimple-loop-interchange.cc
(tree_loop_interchange::valid_data_dependences): Revert
previous change and instead correctly handle DDR_REVERSED_P
dependence.

* gcc.dg/tree-ssa/loop-interchange-16.c: New testcase.

MAINTAINERS - Add myself for write after approval

2021-07-01  Ankur Saini  <arsenic@sourceware.org>

* MAINTAINERS: Add myself for write after approval.

tree-optimization/101278 - handle self-use in DSE analysis

DSE store classification short-cuts the to-be classified stmt itself
from chaining but fails to first check whether the store uses itself
which can be the case when it is a call with the LHS also passed by
value as argument.

2021-07-01  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101278
* tree-ssa-dse.c (dse_classify_store): First check for
uses, then ignore stmt for chaining purposes.

* gcc.dg/torture/pr101278.c: New testcase.

tree-optimization/100778 - fix placement of trapping vectorized ops

This avoids placing possibly trapping vectorized operations where
the corresponding scalar operation was possibly not executed.

2021-01-07  Richard Biener  <rguenther@suse.de>

PR tree-optimization/100778
* tree-vect-slp.c (vect_schedule_slp_node): Do not place trapping
vectorized ops ahead of their scalar BB.

* gcc.dg/torture/pr100778.c: New testcase.

i386: Add integer nabs instructions [PR101044]

The patch adds integer nabs "(NEG (ABS (...)))" instructions, adds STV
conversion and adjusts STV cost calculations accordingly.  When CMOV
instruction is used to implement abs, the sign is determined from the
preceeding operand negation, and CMOVS is used to select between
negated and non-negated value.

To implement nabs, just reverse the condition and emit CMOVNS instead.

The STV costs are adjusted for inherent NOT of nabs insn. V2DI NOT is
somehow costly operation, since it is implemented as a load of zero,
followed by a SUB insn. OTOH, integer nabs with inherent NOT is relatively
cheap, so some STV chains became less profitable for conversion.

The patch rewrites operand scanner in compute_convert_gain to a switch
and reorders case instances in general_scalar_to_vector_candidate_p
to benefit from fallthroughs, and to remove special processing of
andnot in the later case.

gcc/

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

PR target/101044
* config/i386/i386.md (*nabs<dwi>2_doubleword):
New insn_and_split pattern.
(*nabs<dwi>2_1): Ditto.
* config/i386/i386-features.c
(general_scalar_chain::compute_convert_gain):
Handle (NEG (ABS (...))) RTX.  Rewrite src code
scanner as switch statement.
(general_scalar_chain::convert_insn):
Handle (NEG (ABS (...))) RTX.
(general_scalar_to_vector_candidate_p):
Detect  (NEG (ABS (...))) RTX.  Reorder case statements
for (AND (NOT (...) ...)) fallthrough.

gcc/testsuite/

2021-07-01  Uroš Bizjak  <ubizjak@gmail.com>

PR target/101044
* gcc.target/i386/pr101044.c: New test.

tree-optimization/101178 - handle VEC_PERM in SLP permute propagation

This adds handling of VEC_PERM nodes to SLP permute propagation.
Previously VEC_PERM acted as forced materialization of incoming
permutes since it is a good place to do that (with the constraint
of those only appearing for two-operator nodes).  The following
patch, in addition to supporting (but not forcing) this, enables
VEC_PERM nodes acting as "any" permute on the outgoing side since
they also can consume arbitrary permutes on that side.

This again (meh) changes how we represent permutes and materialization
on the graph vertices now explicitely having the common incoming
permute as well as an outgoing permute and in case both are
different the vertex acts as materialization point of the incoming
permute.

2021-06-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101178
* tree-vect-slp.c (slpg_vertex::materialize): Remove.
(slpg::perm_in): Add.
(slpg::get_perm_in): Remove.
(slpg::get_perm_materialized): Add.
(vect_optimize_slp): Handle VEC_PERM nodes more optimally
during permute propagation and materialization.

* gcc.dg/vect/bb-slp-72.c: New testcase.
* gcc.dg/vect/bb-slp-73.c: Likewise.
* gcc.dg/vect/bb-slp-74.c: Likewise.

dwarf2out: Handle COMPOUND_LITERAL_EXPR in loc_list_from_tree_1 [PR101266]

In this case dwarf2out_decl is called from the FEs with GENERIC but not
yet gimplified expressions in it.

As loc_list_from_tree_1 has an exhaustive list of tree codes it wants to
handle and for checking asserts no other codes makes it in, we should
handle even GENERIC trees that shouldn't be valid in GIMPLE.

The following patch handles COMPOUND_LITERAL_EXPR by hnadling it like the
underlying VAR_DECL temporary.

Verified the emitted DWARF is correct (but unoptimized, we emit
DW_OP_lit1 DW_OP_lit1 DW_OP_minus for the upper bound).

2021-07-01  Jakub Jelinek  <jakub@redhat.com>

PR debug/101266
* dwarf2out.c (loc_list_from_tree_1): Handle COMPOUND_LITERAL_EXPR.

* gcc.dg/pr101266.c: New test.

openmp - Fix up && and || reductions [PR94366]

As the testcase shows, the special treatment of && and || reduction combiners
where we expand them as omp_out = (omp_out != 0) && (omp_in != 0) (or with ||)
is not needed just for &&/|| on floating point or complex types, but for all
&&/|| reductions - when expanded as omp_out = omp_out && omp_in (not in C but
GENERIC) it is actually gimplified into NOP_EXPRs to bool from both operands,
which turns non-zero values multiple of 2 into 0 rather than 1.

This patch just treats all &&/|| the same and furthermore uses bool type
instead of int for the comparisons.

2021-07-01  Jakub Jelinek  <jakub@redhat.com>

PR middle-end/94366
gcc/
* omp-low.c (lower_rec_input_clauses): Rename is_fp_and_or to
is_truth_op, set it for TRUTH_*IF_EXPR regardless of new_var's type,
use boolean_type_node instead of integer_type_node as NE_EXPR type.
(lower_reduction_clauses): Likewise.
libgomp/
* testsuite/libgomp.c-c++-common/pr94366.c: New test.

c++: cxx_eval_array_reference and empty elem type [PR101194]

Here the initializer for x is represented as an empty CONSTRUCTOR due to
its empty element type.  So during constexpr evaluation of the ARRAY_REF
x[0], we end up trying to value initialize the omitted element at index 0,
which fails because the element type is not default constructible.

This patch makes cxx_eval_array_reference specifically handle the case
where the element type is an empty type.

PR c++/101194

gcc/cp/ChangeLog:

* constexpr.c (cxx_eval_array_reference): When the element type
is an empty type and the corresponding element is omitted, just
return an empty CONSTRUCTOR instead of attempting value
initialization.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/constexpr-empty16.C: New test.

c++: Extend the PR96204 fix to variable templates too

r12-1829 corrected the access scope during partial specialization
matching of class templates, but overlooked the variable template case.
This patch moves the access scope adjustment to within
most_specialized_partial_spec so that all callers can benefit.

This patch also adjusts a couple of these callers to avoid always
passing the most general template of a variable template specialization,
since that'd cause us to push the wrong access scope for e.g. the second
testcase below (we'd push A<T> instead of A<int>/A<char>).  We ought to
be passing the partially instantiated template instead.

PR c++/96204

gcc/cp/ChangeLog:

* pt.c (finish_template_variable): Pass the partially
instantiated template and its args to instantiate_template.
(instantiate_class_template_1): No need to call
push_nested_class and pop_nested_class around the call to
most_specialized_partial_spec.
(instantiate_template_1): Pass the partially instantiated
template to lookup_template_variable.
(most_specialized_partial_spec):  Use push_access_scope_guard
to set the access scope appropriately.  Use
deferring_access_check_sentinel to force access to get checked
immediately.
(instantiate_decl): Just pass the VAR_DECL to
most_specialized_partial_spec.

gcc/testsuite/ChangeLog:

* g++.dg/template/access41.C: New test.
* g++.dg/template/access41a.C: New test.

Daily bump.

libstdc++: Improve Doxygen documentation groups [PR 101258]

This defines some new Doxygen groups for C++17 variable templates and
for the contents of <experimental/type_traits>. By documenting the group
as a whole and adding each template to a group we don't need to document
them individually.

Also mark more internals with "@cond undocumented" so that Doxygen
ignores them by default. Also make Doxygen process <experimental/simd>.

For some reason, many of the class templates in <type_traits> do not
appear in the "Metaprogramming" group. For example, add_cv,
remove_extent, and all the is_xxx_constructible and is_xxx_assignable
traits. For some reason, Doxygen doesn't include them in the group,
despite doing it correctly for other traits in the same header.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:

PR libstdc++/101258
* doc/doxygen/user.cfg.in (INPUT): Add <experimental/simd>.
(COLS_IN_ALPHA_INDEX): Remove obsolete tag.
(PREDEFINED): Add/fix some more macros that need to be expanded.
* include/bits/random.h: Stop Doxygen from documenting internal
implementation details.
* include/bits/random.tcc: Likewise.
* include/bits/this_thread_sleep.h: Fix @file name.
* include/experimental/bits/simd.h: Add to Doxygen group. Do not
document internal implementation details.
* include/experimental/bits/simd_detail.h: Do not document
internal implementation details.
* include/experimental/simd: Define Doxygen groups.
* include/experimental/type_traits: Improve documentation for
the header file. Define groups. Use @since commands.
* include/std/scoped_allocator (scoped_allocator_adaptor): Move
declaration before undocumented region.
* include/std/type_traits (true_type, false_type): Use using
declaration instead of typedef.
(is_invocable_v, is_nothrow_invocable_v, is_invocable_r_v)
(is_nothrow_invocable_r_v): Move definitions next to other C++17
variable templates.
Do not document internal implementation details. Move misplaced
group-end command. Define group for variable templates.
* include/std/variant: Do not document internal implementation
details.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
line number.

libstdc++: Make <experimental/simd> depend on C++17

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:

* include/experimental/simd: Do not define anything pre-C++17.

libstdc++: Suppress redundant definitions of static members in <random>

Since C++17 the static members of the random number engines are
implicitly inline, so don't need definitions.

Signed-off-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:

* include/bits/random.tcc [__cpp_inline_variables]: Remove
redundant definitions of static constexpr member variables.
* testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
line number.

testsuite: Add missing dg-add-options to CTF testcase ctf-skip-types-4.c

The test already has the appropriate dg-require-effective-target, but requires
the dg-add-options to use the flags needed, if any. This patch fixes the
failure of this testcase on powerpc64.

2021-06-30  Indu Bhagat  <indu.bhagat@oracle.com>

gcc/testsuite/
* gcc.dg/debug/ctf/ctf-skip-types-4.c: Add dg-add-options float64 and
float64x.

libiberty: No longer use /usr/tmp

/usr/tmp is antiquated and not present on decently modern systems.
Remove it from consideration when choosing a directory for temporary
files.

libiberty:

2021-06-29  Gerald Pfeifer  <gerald@pfeifer.com>

* make-temp-file.c (usrtmp): Remove.
(choose_tmpdir): Remove use of usrtmp.

Fix IEEE 128-bit min/max test.

This patch fixes the float128-minmax.c test so that it can accommodate the
generation of xsmincqp and xsmaxcqp instructions on power10.  I changed the
effective target from 'float128' to 'ppc_float128_hw', since this needs the
IEEE 128-bit float hardware support.  Changing to use 'ppc_float128_hw' allows
the 'lp64' test to be dropped.  The 'lp64' test originally was needed because
big endian 32-bit code cannot enable the IEEE 128-bit floating point
instructions.

gcc/testsuite/
2021-06-30  Michael Meissner  <meissner@linux.ibm.com>

* gcc.target/powerpc/float128-minmax.c: Adjust expected code for
power10.
* lib/target-supports.exp (check_effective_target_has_arch_pwr10):
New.

c++: Fix push_access_scope and introduce RAII wrapper for it

When push_access_scope is passed a TYPE_DECL for a class type (which
can happen during e.g. satisfaction), we undesirably push only the
enclosing context of the class instead of the class itself.  This
causes us to mishandle e.g. testcase below due to us not entering the
scope of A before checking its constraints.

This patch adjusts push_access_scope accordingly, and introduces an
RAII wrapper for it.  We make use of this wrapper right away by
replacing the only user of push_nested_class_guard with this new
wrapper, which means we can remove push_nested_class_guard (whose
functionality is basically subsumed by the new wrapper).

gcc/cp/ChangeLog:

* constraint.cc (get_normalized_constraints_from_decl): Use
push_access_scope_guard instead of push_nested_class_guard.
* cp-tree.h (struct push_nested_class_guard): Replace with ...
(struct push_access_scope_guard): ... this.
* pt.c (push_access_scope): When the argument corresponds to
a class type, push the class instead of its context.
(pop_access_scope): Adjust accordingly.

gcc/testsuite/ChangeLog:

* g++.dg/cpp2a/concepts-access2.C: New test.

[amdgcn] Add hook for DWARF address spaces.

Map GCN address spaces to the proposed DWARF address spaces defined by AMD at
https://llvm.org/docs/AMDGPUUsage.html#amdgpu-dwarf-address-class-mapping-table

gcc/

* config/gcn/gcn.c: Include dwarf2.h.
(gcn_addr_space_debug): New function.
(TARGET_ADDR_SPACE_DEBUG): New hook.

[amdgcn] Use frame pointer for CFA expressions.

As size of address is bigger than registers in amdgcn, we are forced to use
DW_CFA_def_cfa_expression to make an expression that concatenates multiple
registers for the value of the CFA.  This then prohibits us from using many
of the dwarf ops which expect CFA rule to be a single regsiter plus an offset.
Using frame pointer in the CFA rule is only real possibility as it is saved
in every frame and it is easy to unwind its value.

So unless user gives fomit-frame-pointer, we use frame pointer for the
cfi information.  This options also has a different default now.

gcc/

* common/config/gcn/gcn-common.c
(gcn_option_optimization_table): Change OPT_fomit_frame_pointer to -O3.
* config/gcn/gcn.c (gcn_expand_prologue): Prefer the frame pointer
when emitting CFI.
(gcn_expand_prologue): Prefer the frame pointer when emitting CFI.
(gcn_frame_pointer_rqd): New function.
(TARGET_FRAME_POINTER_REQUIRED): New hook.

[amdgcn] Update CFI configuration

Currently we don't get any call frame information for the amdgcn target.
This patch makes necessary adjustments to generate CFI that can work with
ROCGDB (ROCm 3.8+).

gcc/

* config/gcn/gcn.c (move_callee_saved_registers): Emit CFI notes for
prologue register saves.
(gcn_debug_unwind_info): Use UI_DWARF2.
(gcn_dwarf_register_number): Map DWARF_LINK_REGISTER to DWARF PC.
(gcn_dwarf_register_span): DWARF_LINK_REGISTER doesn't span.
* config/gcn/gcn.h: (DWARF_FRAME_RETURN_COLUMN): New define.
(DWARF_LINK_REGISTER): New define.
(FIRST_PSEUDO_REGISTER): Increment.
(FIXED_REGISTERS): Add entry for DWARF_LINK_REGISTER.
(CALL_USED_REGISTERS): Likewise.
(REGISTER_NAMES): Likewise.

c++: DR2397 - auto specifier for * and & to arrays [PR100975]

This patch implements DR2397, which removes the restriction in
[dcl.array]p4 that the array element type may not be a placeholder
type.  We don't need to worry about decltype(auto) here, so this
allows code like

  int a[3];
  auto (*p)[3] = &a;
  auto (&r)[3] = a;

However, note that

  auto (&&r)[2] = { 1, 2 };
  auto arr[2] = { 1, 2 };

still doesn't work (although one day it might) and neither does

  int arr[5];
  auto x[5] = arr;

given that auto deduction is performed in terms of function template
argument deduction, so the array decays to *.

PR c++/100975
DR 2397

gcc/cp/ChangeLog:

* decl.c (create_array_type_for_decl): Allow array of auto.

gcc/testsuite/ChangeLog:

* g++.dg/cpp0x/auto24.C: Remove dg-error.
* g++.dg/cpp0x/auto3.C: Adjust dg-error.
* g++.dg/cpp0x/auto42.C: Likewise.
* g++.dg/cpp0x/initlist75.C: Likewise.
* g++.dg/cpp0x/initlist80.C: Likewise.
* g++.dg/diagnostic/auto1.C: Remove dg-error.
* g++.dg/cpp23/auto-array.C: New test.

tree-optimization/101267 - fix SLP vect with masked operations

This fixes the missed handling of external/constant mask SLP
operations, for the testcase in particular masked loads.  The
patch adjusts the vect_check_scalar_mask API to reflect the
required vect_is_simple_use SLP compatible API plus adjusts
for the special handling of masked loads in SLP discovery.

The issue is likely latent.

2021-06-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101267
* tree-vect-stmts.c (vect_check_scalar_mask): Adjust
API and use SLP compatible interface of vect_is_simple_use.
Reject not vectorized SLP defs for callers that do not support
that.
(vect_check_store_rhs): Handle masked stores and pass down
the appropriate operator index.
(vectorizable_call): Adjust.
(vectorizable_store): Likewise.
(vectorizable_load): Likewise.  Handle SLP pecularity of
masked loads.
(vect_is_simple_use): Remove special-casing of masked stores.

* gfortran.dg/pr101267.f90: New testcase.

analyzer: eliminate enum binding_key [PR95006]

I rewrote the way the analyzer's region_model tracks the state of memory
in GCC 11 (in 808f4dfeb3a95f50f15e71148e5c1067f90a126d), which
introduced a store with a binding_map class, mapping binding keys to
symbolic values.

The GCC 11 implementation of binding keys has an enum binding_kind,
which can be "default" vs "direct"; the idea being that direct
bindings take priority over default bindings, where the latter could
be used to represent e.g. a zero-fill of a buffer, and the former
expresses those subregions that have since been touched.

This doesn't work well: it doesn't express the idea of filling
different subregions with different values, or a memset that only
touches part of a buffer, leading to numerous XFAILs in the memset
test cases (and elsewhere).

As preparatory work towards tracking uninitialized values, this patch
eliminates the enum binding_kind, so that all bindings have
equal weight; the order in which they happen is all that matters.
If a write happens which partially overwrites an existing binding,
the new code can partially overwrite a binding, potentially punching a
hole so that an existing binding is split into two parts.

The patch adds some new classes:
- a new "bits_within_svalue" symbolic value to support extracting
  parts of an existing value when its binding is partially clobbered
- a new "repeated_svalue" symbolic value to better express filling
  a region with repeated copies of a symbolic value (e.g. constant
  zero)
- a new "sized_region" region to express accessing a subregion
  with a symbolic size in bytes
and it rewrites e.g. how memset is implemented, so that we can precisely
track which bits in a region have not been touched.

That said, the patch doesn't actually implement "uninitialized" values;
I'm saving that for a followup.

gcc/analyzer/ChangeLog:
PR analyzer/95006
* analyzer.h (class repeated_svalue): New forward decl.
(class bits_within_svalue): New forward decl.
(class sized_region): New forward decl.
(get_field_at_bit_offset): New forward decl.
* engine.cc (exploded_graph::get_or_create_node): Validate the
merged state.
(exploded_graph::maybe_process_run_of_before_supernode_enodes):
Validate the states at each stage.
* program-state.cc (program_state::validate): Validate
m_region_model.
* region-model-impl-calls.cc (region_model::impl_call_memset):
Replace special-case logic for handling constant sizes with
a call to fill_region of a sized_region with the given fill value.
* region-model-manager.cc (maybe_undo_optimize_bit_field_compare):
Drop DK_direct.
(region_model_manager::maybe_fold_sub_svalue):  Fold element-based
subregions of an initial value into initial values of an element.
Fold subvalues of repeated svalues.
(region_model_manager::maybe_fold_repeated_svalue): New.
(region_model_manager::get_or_create_repeated_svalue): New.
(get_bit_range_for_field): New.
(get_byte_range_for_field): New.
(get_field_at_byte_range): New.
(region_model_manager::maybe_fold_bits_within_svalue): New.
(region_model_manager::get_or_create_bits_within): New.
(region_model_manager::get_sized_region): New.
(region_model_manager::log_stats): Update for addition of
m_repeated_values_map, m_bits_within_values_map, and
m_sized_regions.
* region-model.cc (region_model::validate): New.
(region_model::on_assignment): Drop enum binding_kind.
(region_model::get_initial_value_for_global): Likewise.
(region_model::get_rvalue_for_bits): Replace body with call to
get_or_create_bits_within.
(region_model::get_capacity): Handle RK_SIZED.
(region_model::set_value): Drop enum binding_kind.
(region_model::fill_region): New.
(region_model::get_representative_path_var_1): Handle RK_SIZED.
* region-model.h (visitor::visit_repeated_svalue): New.
(visitor::visit_bits_within_svalue): New.
(region_model_manager::get_or_create_repeated_svalue): New decl.
(region_model_manager::get_or_create_bits_within): New decl.
(region_model_manager::get_sized_region): New decl.
(region_model_manager::maybe_fold_repeated_svalue): New decl.
(region_model_manager::maybe_fold_bits_within_svalue): New decl.
(region_model_manager::repeated_values_map_t): New typedef.
(region_model_manager::m_repeated_values_map): New field.
(region_model_manager::bits_within_values_map_t): New typedef.
(region_model_manager::m_bits_within_values_map): New field.
(region_model_manager::m_sized_regions): New field.
(region_model::fill_region): New decl.
* region.cc (region::get_base_region): Handle RK_SIZED.
(region::base_region_p): Likewise.
(region::get_byte_size_sval): New.
(get_field_at_bit_offset): Make non-static.
(region::calc_offset): Move implementation of cases to
get_relative_concrete_offset vfunc implementations.  Handle
RK_SIZED.
(region::get_relative_concrete_offset): New.
(decl_region::get_svalue_for_initializer): Drop enum binding_kind.
(field_region::get_relative_concrete_offset): New, from
region::calc_offset.
(element_region::get_relative_concrete_offset): Likewise.
(offset_region::get_relative_concrete_offset): Likewise.
(sized_region::accept): New.
(sized_region::dump_to_pp): New.
(sized_region::get_byte_size): New.
(sized_region::get_bit_size): New.
* region.h (enum region_kind): Add RK_SIZED.
(region::dyn_cast_sized_region): New.
(region::get_byte_size): Make virtual.
(region::get_bit_size): Likewise.
(region::get_byte_size_sval): New decl.
(region::get_relative_concrete_offset): New decl.
(field_region::get_relative_concrete_offset): New decl.
(element_region::get_relative_concrete_offset): Likewise.
(offset_region::get_relative_concrete_offset): Likewise.
(class sized_region): New.
* store.cc (binding_kind_to_string): Delete.
(binding_key::make): Drop enum binding_kind.
(binding_key::dump_to_pp): Delete.
(binding_key::cmp_ptrs): Drop enum binding_kind.
(bit_range::contains_p): New.
(byte_range::dump): New.
(byte_range::contains_p): New.
(byte_range::cmp): New.
(concrete_binding::dump_to_pp): Drop enum binding_kind.
(concrete_binding::cmp_ptr_ptr): Likewise.
(symbolic_binding::dump_to_pp): Likewise.
(symbolic_binding::cmp_ptr_ptr): Likewise.
(binding_map::apply_ctor_val_to_range): Likewise.
(binding_map::apply_ctor_pair_to_child_region): Likewise.
(binding_map::get_overlapping_bindings): New.
(binding_map::remove_overlapping_bindings): New.
(binding_cluster::validate): New.
(binding_cluster::bind): Drop enum binding_kind.
(binding_cluster::bind_compound_sval): Likewise.
(binding_cluster::purge_region): Likewise.
(binding_cluster::zero_fill_region): Reimplement in terms of...
(binding_cluster::fill_region): New.
(binding_cluster::mark_region_as_unknown): Drop enum binding_kind.
(binding_cluster::get_binding): Likewise.
(binding_cluster::get_binding_recursive): Likewise.
(binding_cluster::get_any_binding): Likewise.
(binding_cluster::maybe_get_compound_binding): Reimplement.
(binding_cluster::get_overlapping_bindings): Delete.
(binding_cluster::remove_overlapping_bindings): Reimplement in
terms of binding_map::remove_overlapping_bindings.
(binding_cluster::can_merge_p): Update for removal of
enum binding_kind.
(binding_cluster::on_unknown_fncall): Drop enum binding_kind.
(binding_cluster::maybe_get_simple_value): Likewise.
(store_manager::get_concrete_binding): Likewise.
(store_manager::get_symbolic_binding): Likewise.
(store::validate): New.
(store::set_value): Drop enum binding_kind.
(store::zero_fill_region): Reimplement in terms of...
(store::fill_region): New.
(selftest::test_binding_key_overlap): Drop enum binding_kind.
* store.h (enum binding_kind): Delete.
(binding_kind_to_string): Delete decl.
(binding_key::make): Drop enum binding_kind.
(binding_key::dump_to_pp): Make pure virtual.
(binding_key::get_kind): Delete.
(binding_key::mark_deleted): Delete.
(binding_key::mark_empty): Delete.
(binding_key::is_deleted): Delete.
(binding_key::is_empty): Delete.
(binding_key::binding_key): Delete.
(binding_key::impl_hash): Delete.
(binding_key::impl_eq): Delete.
(binding_key::m_kind): Delete.
(bit_range::get_last_bit_offset): New.
(bit_range::contains_p): New.
(byte_range::contains_p): New.
(byte_range::operator==): New.
(byte_range::get_start_byte_offset): New.
(byte_range::get_next_byte_offset): New.
(byte_range::get_last_byte_offset): New.
(byte_range::as_bit_range): New.
(byte_range::cmp): New.
(concrete_binding::concrete_binding): Drop enum binding_kind.
(concrete_binding::hash): Likewise.
(concrete_binding::operator==): Likewise.
(concrete_binding::mark_deleted): New.
(concrete_binding::mark_empty): New.
(concrete_binding::is_deleted): New.
(concrete_binding::is_empty): New.
(default_hash_traits<ana::concrete_binding>::empty_zero_p): Make false.
(symbolic_binding::symbolic_binding): Drop enum binding_kind.
(symbolic_binding::hash): Likewise.
(symbolic_binding::operator==): Likewise.
(symbolic_binding::mark_deleted): New.
(symbolic_binding::mark_empty): New.
(symbolic_binding::is_deleted): New.
(symbolic_binding::is_empty): New.
(binding_map::remove_overlapping_bindings): New decl.
(binding_map::get_overlapping_bindings): New decl.
(binding_cluster::validate): New decl.
(binding_cluster::bind): Drop enum binding_kind.
(binding_cluster::fill_region): New decl.
(binding_cluster::get_binding): Drop enum binding_kind.
(binding_cluster::get_binding_recursive): Likewise.
(binding_cluster::get_overlapping_bindings): Delete.
(store::validate): New decl.
(store::set_value): Drop enum binding_kind.
(store::fill_region): New decl.
(store_manager::get_concrete_binding): Drop enum binding_kind.
(store_manager::get_symbolic_binding): Likewise.
* svalue.cc (svalue::cmp_ptr): Handle SK_REPEATED and
SK_BITS_WITHIN.
(svalue::extract_bit_range): New.
(svalue::maybe_fold_bits_within): New.
(constant_svalue::maybe_fold_bits_within): New.
(unknown_svalue::maybe_fold_bits_within): New.
(unaryop_svalue::maybe_fold_bits_within): New.
(repeated_svalue::repeated_svalue): New.
(repeated_svalue::dump_to_pp): New.
(repeated_svalue::accept): New.
(repeated_svalue::all_zeroes_p): New.
(repeated_svalue::maybe_fold_bits_within): New.
(bits_within_svalue::bits_within_svalue): New.
(bits_within_svalue::dump_to_pp): New.
(bits_within_svalue::maybe_fold_bits_within): New.
(bits_within_svalue::accept): New.
(bits_within_svalue::implicitly_live_p): New.
(compound_svalue::maybe_fold_bits_within): New.
* svalue.h (enum svalue_kind): Add SK_REPEATED and SK_BITS_WITHIN.
(svalue::dyn_cast_repeated_svalue): New.
(svalue::dyn_cast_bits_within_svalue): New.
(svalue::extract_bit_range): New decl.
(svalue::maybe_fold_bits_within): New vfunc decl.
(region_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(region_svalue::key_t::is_empty): Likewise.
(default_hash_traits<region_svalue::key_t>::empty_zero_p): Make false.
(constant_svalue::maybe_fold_bits_within): New.
(unknown_svalue::maybe_fold_bits_within): New.
(poisoned_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(poisoned_svalue::key_t::is_empty): Likewise.
(default_hash_traits<poisoned_svalue::key_t>::empty_zero_p): Make
false.
(setjmp_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(setjmp_svalue::key_t::is_empty): Likewise.
(default_hash_traits<setjmp_svalue::key_t>::empty_zero_p): Make
false.
(unaryop_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(unaryop_svalue::key_t::is_empty): Likewise.
(unaryop_svalue::maybe_fold_bits_within): New.
(default_hash_traits<unaryop_svalue::key_t>::empty_zero_p): Make
false.
(binop_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(binop_svalue::key_t::is_empty): Likewise.
(default_hash_traits<binop_svalue::key_t>::empty_zero_p): Make
false.
(sub_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(sub_svalue::key_t::is_empty): Likewise.
(default_hash_traits<sub_svalue::key_t>::empty_zero_p): Make
false.
(class repeated_svalue): New.
(is_a_helper <const repeated_svalue *>::test): New.
(struct default_hash_traits<repeated_svalue::key_t>): New.
(class bits_within_svalue): New.
(is_a_helper <const bits_within_svalue *>::test): New.
(struct default_hash_traits<bits_within_svalue::key_t>): New.
(widening_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(widening_svalue::key_t::is_empty): Likewise.
(default_hash_traits<widening_svalue::key_t>::empty_zero_p): Make
false.
(compound_svalue::key_t::mark_empty): Use 2 rather than NULL_TREE.
(compound_svalue::key_t::is_empty): Likewise.
(compound_svalue::maybe_fold_bits_within): New.
(default_hash_traits<compound_svalue::key_t>::empty_zero_p): Make
false.

gcc/testsuite/ChangeLog:
PR analyzer/95006
* gcc.dg/analyzer/clobbers-1.c: New test.
* gcc.dg/analyzer/clobbers-2.c: New test.
* gcc.dg/analyzer/data-model-1.c (test_26): Mark xfail as fixed.
(test_28): Likewise.
(test_52): Likewise.  Add coverage for end of buffer.
* gcc.dg/analyzer/explode-1.c: Add leak warning.
* gcc.dg/analyzer/memset-1.c (test_3): Mark xfail as fixed.
(test_4): Use char.  Mark xfail as fixed.
(test_6b): New.
(test_7): Mark xfail as fixed.  Add coverage for start of buffer.
(test_8): New.
(test_9): New.
* gcc.dg/analyzer/memset-CVE-2017-18549-1.c: New test.
* gcc.dg/analyzer/symbolic-8.c: New test.

Signed-off-by: David Malcolm <dmalcolm@redhat.com>

gcc.c: Add -foffload= to display_help

gcc/ChangeLog:

* common.opt (foffload): Remove help as Driver only.
* gcc.c (display_help): Add -foffload.

[testsuite]: Add missing dg-add-options float16 to gcc.dg/debug/ctf/ctf-skip-types-2.c

The test already checks dg-require-effective-target float16, but this
is not sufficient to use the flags needed, if any.
This patch makes the test pass on arm.

2021-06-30  Christophe Lyon  <christophe.lyon@foss.st.com>

gcc/testsuite/
* gcc.dg/debug/ctf/ctf-skip-types-2.c: Add dg-add-options float16.

gcc.c's check_offload_target_name: Fixes to inform hints

gcc/ChangeLog:

* gcc.c (close_at_file, execute): Replace alloca by XALLOCAVEC.
(check_offload_target_name): Fix splitting OFFLOAD_TARGETS into
a candidate list; better inform no offload target is configured
and fix hint extraction when passed target is not '\0' at [len].
* common.opt (foffload): Add tailing '.'.
(foffload-options): Likewise; fix flag name in the help string.

arm/66791: Gate comparison in vca intrinsics on __FAST_MATH__.

gcc/ChangeLog:

PR target/66791
* config/arm/arm_neon.h: Move vabs intrinsics before vcage_f32.
(vcage_f32): Gate comparison on __FAST_MATH__.
(vcageq_f32): Likewise.
(vcale_f32): Likewise.
(vcaleq_f32): Likewise.
(vcagt_f32): Likewise.
(vcagtq_f32): Likewise.
(vcalt_f32): Likewise.
(vcaltq_f32): Likewise.
(vcage_f16): Likewise.
(vcageq_f16): Likewise.
(vcale_f16): Likewise.
(vcaleq_f16): Likewise.
(vcagt_f16): Likewise.
(vcagtq_f16): Likewise.
(vcalt_f16): Likewise.
(vcaltq_f16): Likewise.

tree-optimization/101264 - rework SLP "any" permute forward prop

This integrates the forward propagation of SLP "any" permutes into
the main propagation stage as a separate single-pass propagation
didn't work out.

2021-06-30  Richard Biener  <rguenther@suse.de>

PR tree-optimization/101264
* tree-vect-slp.c (vect_optimize_slp): Propagate the
computed perm_in to all "any" permute successors
we cannot de-duplicate immediately.

* gfortran.dg/pr101264.f90: New testcase.

MAINTAINERS: Add myself for write after approval

ChangeLog:

* MAINTAINERS (Write After Approval): Add myself.

fixinc: don't "fix" machine names in __has_include(...) [PR91085]

fixincludes/

PR other/91085
* fixfixes.c (check_has_inc): New static function.
  (machine_name_fix): Don't replace header names in
  __has_include(...).
* inclhack.def (machine_name): Adjust test.
* tests/base/testing.h: Update.

The upper bits of FIXUPIMMS{S,D} should come from src1 not dest.

gcc/ChangeLog:

PR target/101248
* config/i386/sse.md
(avx512f_sfixupimm<mode><sd_maskz_name><round_saeonly_name>):
Refined to ..
(avx512f_sfixupimm<mode><maskz_scalar_name><round_saeonly_name>):
this.
(avx512f_sfixupimm<mode>_mask<round_saeonly_name>"): Refined.
* config/i386/subst.md (maskz_scalar): New define_subst.
(maskz_scalar_name): New subst_attr.
(maskz_scalar_op5): Ditto.
(round_saeonly_maskz_scalar_op5): Ditto.
(round_saeonly_maskz_scalar_operand5): Ditto.

gcc/testsuite/ChangeLog

PR target/101248
* gcc.target/i386/pr101248.c: New test.