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libstdc++-v3/ChangeLog:
* testsuite/18_support/new_nothrow.cc: Add missing noexcept
to operator delete replacements.
* testsuite/20_util/any/cons/92156.cc: Disable
-Winit-list-lifetime warnings from instantiating invalid
specialization of manager function.
* testsuite/20_util/any/modifiers/92156.cc: Likewise.
* testsuite/20_util/default_delete/void_neg.cc: Prune additional
diagnostics.
* testsuite/20_util/headers/memory/synopsis.cc: Add missing
noexcept.
* testsuite/20_util/shared_ptr/cons/void_neg.cc: Prune
additional diagnostic.
* testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Add
missing noexcept to operator delete replacements.
* testsuite/21_strings/basic_string/cons/char/103919.cc:
Likewise.
* testsuite/23_containers/map/modifiers/emplace/92300.cc:
Likewise.
* testsuite/23_containers/map/modifiers/insert/92300.cc:
Likewise.
* testsuite/24_iterators/headers/iterator/range_access_c++11.cc:
Add missing noexcept to synopsis declarations.
* testsuite/24_iterators/headers/iterator/range_access_c++14.cc:
Likewise.
* testsuite/24_iterators/headers/iterator/range_access_c++17.cc:
Likewise.
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Fix some problems noticed with -Wsystem-headers.
libstdc++-v3/ChangeLog:
* include/bits/stl_tempbuf.h (_Temporary_buffer): Disable
warnings about get_temporary_buffer being deprecated.
* include/ext/functional (mem_fun1, mem_fun1_ref): Disable
warnings about mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t and
const_mem_fun1_ref_t being deprecated.
* include/std/array (__array_traits<T, 0>): Remove artificial
attributes which give warnings about being ignored.
* include/std/spanstream (basic_spanbuf::setbuf): Add assertion
and adjust to avoid narrowing warning.
* libsupc++/exception_ptr.h [!__cpp_rtti && !__cpp_exceptions]
(make_exception_ptr): Add missing inline specifier.
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This reduces the abstraction penalty for allocator support in
unoptimized code. Constructing and using allocators in containers calls
many one-line (or completely empty) inline functions. Those can all be
inlined to reduce code size and function call overhead for -O0.
libstdc++-v3/ChangeLog:
* include/bits/alloc_traits.h (allocator_traits): Add
always_inline attribute to all member functions.
(__do_alloc_on_copy, __alloc_on_copy, __do_alloc_on_move)
(__alloc_on_move, __do_alloc_on_swap, __alloc_on_swap)
(_Destroy(FwdIter, FwdIter, allocator<T>&)): : Add
always_inline attribute.
* include/bits/allocator.h (allocator): Add always_inline
attribute to all member functions and equality operators.
* include/bits/new_allocator.h (__new_allocator): Likewise.
* include/ext/alloc_traits.h (__gnu_cxx::__alloc_traits):
Likewise.
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`basic_filebuf::xsputn` would bypass the buffer when passed a chunk of
size 1024 and above, seemingly as an optimisation.
This can have a significant performance impact if the overhead of a
`write` syscall is non-negligible, e.g. on a slow disk, on network
filesystems, or simply during IO contention because instead of flushing
every `BUFSIZ` (by default), we can flush every 1024 char.
The impact is even greater with custom larger buffers, e.g. for network
filesystems, because the code could issue `write` for example 1000X more
often than necessary with respect to the buffer size.
It also introduces a significant discontinuity in performance when
writing chunks of size 1024 and above.
Instead, it makes sense to only bypass the buffer if the amount of data
to be written is larger than the buffer capacity.
Signed-off-by: Charles-Francois Natali <cf.natali@gmail.com>
libstdc++-v3/ChangeLog:
PR libstdc++/63746
* include/bits/fstream.tcc (basic_filbuf::xsputn): Remove
1024-byte chunking that bypasses the buffer for large writes.
* testsuite/27_io/basic_filebuf/sputn/char/63746.cc: New test.
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Until now operator+(char*, string) and operator+(string, char*) had
different performance characteristics. The former required a single
memory allocation and the latter required two. This patch makes the
performance equal.
After consultation with Jonathan, it seemed like a good idea to create a
single function that performed one-allocation string concatenation that
could be used by various different version of operator+. This patch adds
such a function and calls it from the relevant implementations.
Co-authored-by: Jonathan Wakely <jwakely@redhat.com>
libstdc++-v3/ChangeLog:
* include/bits/basic_string.h (__str_cat): Add common function
that performs single-allocation string concatenation.
(operator+): Use __str_cat.
* include/bits/basic_string.tcc (operator+): Move to .h and
define inline using __str_cat.
Signed-off-by: Will Hawkins <whh8b@obs.cr>
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Change several places in the eBPF backend dealing with overloaded
built-in functions to consistently use the enum bpf_builtins type,
rather than variously using integer constants or booleans. The result is
eaiser to read and extend.
gcc/
* config/bpf/bpf.cc (struct core_walk_data): Add field `which'...
(bpf_resolve_overloaded_builtin): ... set it here. Use values of enum
bpf_builtins for error checks.
(bpf_core_walk): Use values of enum bpf_builtins.
(bpf_core_newdecl): Likewise.
(bpf_expand_builtin): Likewise.
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This is the range-op entry for floating point PLUS_EXPR. It's the
most intricate range entry we have so far, because we need to keep
track of rounding and target FP formats. This will be the last FP
entry I commit, mostly to avoid disturbing the tree any further, and
also because what we have so far is enough for a solid VRP.
So far we track NANs and signs correctly. We also handle relationals
(symbolics and numeric), both ordered and unordered, ABS_EXPR and
NEGATE_EXPR which are used to fold __builtin_isinf, and __builtin_sign
(__builtin_copysign is coming up). All in all, I think this provide
more than enough for basic VRP on floats, as well as provide a basis
to flesh out the rest if there's interest.
My goal with this entry is to provide a template for additional binary
operators, as they tend to follow a similar pattern: handle NANs, do
the arithmetic while keeping track of rounding, and adjust for NAN. I
may abstract the general parts as we do for irange's fold_range and
wi_fold.
PR tree-optimization/24021
gcc/ChangeLog:
* range-op-float.cc (propagate_nans): New.
(frange_nextafter): New.
(frange_arithmetic): New.
(class foperator_plus): New.
(floating_op_table::floating_op_table): Add PLUS_EXPR entry.
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/vrp-float-plus.c: New test.
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Implement a variant of real_isdenormal() to be used within real.cc
where the argument is known to be in denormal format. Rewrite
real_isdenormal() for use outside of real.cc where the argument is
known to be normalized.
gcc/ChangeLog:
* real.cc (real_isdenormal): New.
(encode_ieee_single): Call real_isdenormal.
(encode_ieee_double): Same.
(encode_ieee_extended): Same.
(encode_ieee_quad): Same.
(encode_ieee_half): Same.
(encode_arm_bfloat_half): Same.
* real.h (real_isdenormal): Add mode argument. Rewrite for
normalized values.
* value-range.cc (frange::flush_denormals_to_zero): Pass mode to
real_isdenormal.
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The following makes sure to set alignment information on the LHS
of __builtin_assume_alignment calls even when not optimizing so
uses as arguments to builtin functions like memcpy or __atomic_load_n
can be reflected at RTL expansion time.
PR tree-optimization/107389
* gimple-low.cc (lower_builtin_assume_aligned): New.
(lower_stmt): Call it.
* gcc.dg/pr107389.c: New testcase.
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We have some code in range-ops that sets better maybe nonzero bits for
TRUNC_DIV_EXPR by a power of 2 than CCP does, by just shifting the
mask. I'd like to offload this functionality into the CCP mask
tracking code, which already does the right thing for right shifts.
The testcase for this change is gcc.dg/tree-ssa/vrp123.c and
gcc.dg/tree-ssa/pr107541.c.
gcc/ChangeLog:
* range-op.cc (operator_div::fold_range): Call
update_known_bitmask.
* tree-ssa-ccp.cc (bit_value_binop): Handle divisions by powers of
2 as a right shift.
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2022-11-08 Kwok Cheung Yeung <kcy@codesourcery.com>
gcc/
* config/gcn/gcn.cc (gcn_expand_builtin_1): Expand first argument
of GCN_BUILTIN_LDEXPV to V64DFmode.
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2022-11-08 Kwok Cheung Yeung <kcy@codesourcery.com>
gcc/
* config/gcn/gcn-builtins.def (FABSV, FLOORVF, FLOORV): New builtins.
* config/gcn/gcn.cc (gcn_expand_builtin_1): Expand GCN_BUILTIN_FABSV,
GCN_BUILTIN_FLOORVF and GCN_BUILTIN_FLOORV.
gcc/testsuite/
* gcc.target/gcn/math-builtins-1.c: New test.
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After Jakub and Richi's suggestion of using the same representation
for tracking known bits as we do in CCP, I took a peek at the code and
realized there's a plethora of bit-tracking code there that we could
be sharing with range-ops. For example, the multiplication
optimizations are way better than what I had cobbled together. For
that matter, our maybe nonzero tracking as a whole has a lot of room
for improvement. Being the lazy ass that I am, I think we should just
use one code base (CCP's).
This patch provides a thin wrapper for converting the irange maybe
nonzero bits to what CCP requires, and uses that to call into
bit_value_binop(). I have so far converted the MULT_EXPR range-op
entry to use it, as the DIV_EXPR entry we have gets a case CCP doesn't
get so I'd like to contribute the enhancement to CCP before converting
over.
I'd like to use this approach with the dozen or so tree_code's that
are handled in CCP, thus saving us from having to implement any of
them :).
Early next season I'd like to change irange's internal representation
to a pair of value / mask, and start tracking all known bits. This
ties in nicely with our plan for tracking known set bits.
Perhaps if the stars align, we could merge the bit twiddling in CCP
into range-ops and have a central repository for it. That is, once we
make the switch to wide-ints, and assuming there are no performance
issues. Note that range-ops is our lowest level abstraction.
i.e. it's just the math, there's no GORI or ranger, or even the
concept of a symbolic or SSA.
gcc/ChangeLog:
* range-op.cc (irange_to_masked_value): New.
(update_known_bitmask): New.
(operator_mult::fold_range): Call update_known_bitmask.
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The test pr105586.c fails on a big endian system when run in 32bit
mode. The failure occurs as the test case does not guard against
unsupported __int128.
2022-10-13 Surya Kumari Jangala <jskumari@linux.ibm.com>
gcc/testsuite/
PR testsuite/107171
* gcc.target/powerpc/pr105586.c: Guard against unsupported
__int128.
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I've missed that this function needs to handle all the builtins that
are handled in can_test_argument_range.
The following patch does that. For many of the builtins (like acos, or
log) it is the same range regardless of the floating point type, but for
some (cosh, sinh, exp{,m1,2}) it is different for each format,
so I had to compute those ranges.
Note, seems the existing ranges were in some cases (e.g. for exp2)
the smallest in absolute value which results infinite result, in others
the largest which still results in finite result (but consistently so
for the IEEE single vs. double). I've followed that for IEEE half and
quad cases too, just am not sure why it was like that. I think
get_domain with true, false is open interval rather than closed
and the comments indicate that too, conservatively that is certainly
correct.
OT, with frange, perhaps we could DCE the calls unconditionally if
frange can prove we are in the domain range.
2022-11-08 Jakub Jelinek <jakub@redhat.com>
PR tree-optimization/107547
* tree-call-cdce.cc (get_no_error_domain): Handle CASE_FLT_FN_FLOATN_NX
of BUILT_IN_{ACOS,ASIN,ACOSH,ATANH,LOG,LOG2,LOG10,LOG1P}. Handle
BUILT_IN_{COSH,SINH,EXP,EXPM1,EXP2}F{16,32,64,128}.
* gcc.dg/pr107547.c: New test.
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For integer vector comparisons without XOP before AVX512{F,VL} we are
constrained by only GT and EQ being supported in HW.
For GTU we play tricks to implement it using GT or unsigned saturating
subtraction, for LT/LTU we swap the operands and thus turn it into
GT/GTU. For LE/LEU we handle it by using GT/GTU and negating the
result and for GE/GEU by using GT/GTU on swapped operands and negating
the result.
If the second operand is a CONST_VECTOR, we can usually do better though,
we can avoid the negation. For LE/LEU cst by doing LT/LTU cst+1 (and
then cst+1 GT/GTU x) and for GE/GEU cst by doing GT/GTU cst-1, provided
there is no wrap-around on those cst+1 or cst-1.
GIMPLE canonicalizes x < cst to x <= cst-1 etc. (the rule is smaller
absolute value on constant), but only for scalars or uniform vectors,
so in some cases this undoes that canonicalization in order to avoid
the extra negation, but it handles also non-uniform constants.
E.g. with -mavx2 the testcase assembly difference is:
- movl $47, %eax
+ movl $48, %eax
vmovdqa %xmm0, %xmm1
vmovd %eax, %xmm0
vpbroadcastb %xmm0, %xmm0
- vpminsb %xmm0, %xmm1, %xmm0
- vpcmpeqb %xmm1, %xmm0, %xmm0
+ vpcmpgtb %xmm1, %xmm0, %xmm0
and
- vmovdqa %xmm0, %xmm1
- vmovdqa .LC1(%rip), %xmm0
- vpminsb %xmm1, %xmm0, %xmm1
- vpcmpeqb %xmm1, %xmm0, %xmm0
+ vpcmpgtb .LC1(%rip), %xmm0, %xmm0
while with just SSE2:
- pcmpgtb .LC0(%rip), %xmm0
- pxor %xmm1, %xmm1
- pcmpeqb %xmm1, %xmm0
+ movdqa %xmm0, %xmm1
+ movdqa .LC0(%rip), %xmm0
+ pcmpgtb %xmm1, %xmm0
and
- movdqa %xmm0, %xmm1
- movdqa .LC1(%rip), %xmm0
- pcmpgtb %xmm1, %xmm0
- pxor %xmm1, %xmm1
- pcmpeqb %xmm1, %xmm0
+ pcmpgtb .LC1(%rip), %xmm0
2022-11-08 Jakub Jelinek <jakub@redhat.com>
PR target/107546
* config/i386/predicates.md (vector_or_const_vector_operand): New
predicate.
* config/i386/sse.md (vec_cmp<mode><sseintvecmodelower>,
vec_cmpv2div2di, vec_cmpu<mode><sseintvecmodelower>,
vec_cmpuv2div2di): Use nonimmediate_or_const_vector_operand
predicate instead of nonimmediate_operand and
vector_or_const_vector_operand instead of vector_operand.
* config/i386/i386-expand.cc (ix86_expand_int_sse_cmp): For
LE/LEU or GE/GEU with CONST_VECTOR cop1 try to transform those
into LE/LEU or GT/GTU with larger or smaller by one cop1 if
there is no wrap-around. Force CONST_VECTOR cop0 or cop1 into
REG. Formatting fix.
* gcc.target/i386/pr107546.c: New test.
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As r13-3609-g6d9dbdf51f9afe8 has been committed, we can now enable
even the denorm_min test.
2022-11-08 Jakub Jelinek <jakub@redhat.com>
* testsuite/20_util/to_chars/float128_c++23.cc (test): Uncomment
denorm_min test.
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gcc/
PR rtl-optimization/107482
* ira-color.cc (assign_hard_reg): Only call
update_costs_from_copies when retry_p is false.
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When the allocator is of an unconstrained array type and has an initializing
expression, the copy of the initializing expression must be done separately
from that of the bounds.
gcc/ada/
* gcc-interface/utils2.cc (build_allocator): For unconstrained
array types with a storage model and an initializing expression,
copy the initialization expression separately from the bounds. In
all cases with a storage model, pass the locally computed size for
the store.
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In the case of Some_Enumeration_Type'Image (<some static value>),
the compiler will replace this expression in its internal program
representation with a corresponding string literal. This is incorrect
if the Put_Image aspect has been specified (directly or via inheritance)
for the enumeration type.
gcc/ada/
* sem_attr.adb
(Eval_Attribute): Don't simplify 'Image call if Put_Image has been
specified.
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Code cleanup; semantics is unaffected.
gcc/ada/
* exp_ch6.adb, exp_put_image.adb, sem_aggr.adb, sem_attr.adb,
sem_ch5.adb, sem_type.adb, sem_util.adb: Replace
"Present (Find_Aspect (...))" with "Has_Aspect".
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Before this patch, a classwide contract expression was preanalyzed
only when its primitive operation's type was frozen. It caused name
resolution to be off in the cases where the freezing took place
after the end of the declaration list the primitive operation was
declared in.
This patch makes it so that if the compiler gets to the end of
the declaration list before the type is frozen, it preanalyzes the
classwide contract expression, so that the names are resolved in the
right context.
gcc/ada/
* contracts.adb
(Preanalyze_Class_Conditions): New procedure.
(Preanalyze_Condition): Moved out from Merge_Class_Conditions in
order to be spec-visible.
* contracts.ads
(Preanalyze_Class_Conditions): New procedure.
* sem_prag.adb
(Analyze_Pre_Post_Condition_In_Decl_Part): Call
Preanalyze_Class_Conditions when necessary.
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gcc/ada/
* libgnat/system-vxworks7-aarch64-rtp-smp.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-aarch64.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-arm-rtp-smp.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-arm.ads: Set Support_Atomic_Primitives
to True.
* libgnat/system-vxworks7-ppc-kernel.ads: Set
Support_Atomic_Primitives to False.
* libgnat/system-vxworks7-ppc-rtp-smp.ads: Set
Support_Atomic_Primitives to False.
* libgnat/system-vxworks7-ppc64-kernel.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-ppc64-rtp-smp.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-x86-kernel.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-x86-rtp-smp.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-x86_64-kernel.ads: Set
Support_Atomic_Primitives to True.
* libgnat/system-vxworks7-x86_64-rtp-smp.ads: Set
Support_Atomic_Primitives to True.
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gcc/ada/
* fe.h (Get_Warn_On_Questionable_Layout): Add void parameter.
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When instantiating generic package that includes a formal subprogram
declaration with Ghost aspect and a subprogram_default of null, e.g.:
generic
with procedure Proc is null with Ghost;
package P is ...
the Ghost aspect should be propagated to the internally generated null
subprogram, so this null subprogram can be used in contexts that require
ghost entities.
gcc/ada/
* sem_ch12.adb (Instantiate_Formal_Subprogram): Copy aspect Ghost
from formal subprogram declaration to the internally generated
procedure.
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This rule deals with the specific case of a conditional expression that is
the operand of a type conversion and effectively distributes the conversion
to the dependent expressions with the help of the dynamic semantics.
gcc/ada/
* sem_ch4.adb (Analyze_Case_Expression): Compute the
interpretations of the expression only at the end of the analysis,
but skip doing it if it is the operand of a type conversion.
(Analyze_If_Expression): Likewise.
* sem_res.adb (Resolve): Deal specially with conditional
expression that is the operand of a type conversion.
(Resolve_Dependent_Expression): New procedure.
(Resolve_Case_Expression): Call Resolve_Dependent_Expression.
(Resolve_If_Expression): Likewise.
(Resolve_If_Expression.Apply_Check): Take result type as
parameter.
(Resolve_Type_Conversion): Do not warn about a redundant
conversion when the operand is a conditional expression.
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This patch enforces matching of extra formals in overridden subprograms,
subprogram renamings, and subprograms to which attributes 'Access,
'Unchecked_Access, or 'Unrestricted_Access is applied (for these access
cases the subprogram is checked against its corresponding subprogram
type). This enforcement is an internal consistency check, not an
implementation of some language legality rule.
gcc/ada/
* debug.adb
(Debug_Flag_Underscore_XX): Switch -gnatd_X used temporarily to allow
disabling extra formal checks.
* exp_attr.adb
(Expand_N_Attribute_Reference [access types]): Add extra formals
to the subprogram referenced in the prefix of 'Unchecked_Access,
'Unrestricted_Access or 'Access; required to check that its extra
formals match the extra formals of the corresponding subprogram type.
* exp_ch3.adb
(Stream_Operation_OK): Declaration moved to the public part of the
package.
(Validate_Tagged_Type_Extra_Formals): New subprogram.
(Expand_Freeze_Record_Type): Improve the code that takes care of
adding the extra formals of dispatching primitives; extended to
add also the extra formals to renamings of dispatching primitives.
* exp_ch3.ads
(Stream_Operation_OK): Declaration moved from the package body.
* exp_ch6.adb
(Check_BIP_Actuals): Complete documentation.
(Has_BIP_Extra_Formal): Subprogram declaration moved to the public
part of the package. In addition, a parameter has been added to
disable an assertion that requires its use with frozen entities.
(Duplicate_Params_Without_Extra_Actuals): New subprogram.
(Check_Subprogram_Variant): Emit the call without duplicating the
extra formals since they will be added when the call is analyzed.
(Expand_Call_Helper): Ensure that the called subprogram has all its
extra formals, enforce assertion checking extra formals on thunks,
and mark calls from thunks as processed-BIP-calls to avoid adding
their extra formals twice.
(Is_Build_In_Place_Function): Return False for entities with foreign
convention.
(Is_Build_In_Place_Function_Call): Return True also for not BIP functions
that have BIP formals since the extra actuals are required.
(Make_Build_In_Place_Call_In_Object_Declaration): Occurrences of
Is_Return_Object replaced by the local variable Is_OK_Return_Object
that evaluates to False for scopes with foreign convention.
(Might_Have_Tasks): Fix check of class-wide limited record types.
(Needs_BIP_Task_Actuals): Remove assertion to allow calling this
function in more contexts; in addition it returns False for functions
returning objects with foreign convention.
(Needs_BIP_Finalization_Master): Likewise.
(Needs_BIP_Alloc_Form): Likewise.
(Validate_Subprogram_Calls): Check that the number of actuals (including
extra actuals) of calls in the subtree N match their corresponding
formals.
* exp_ch6.ads
(Has_BIP_Extra_Formal): Subprogram declaration moved to the public
part of the package. In addition, a parameter has been added to
disable an assertion that requires its use with frozen entities.
(Is_Build_In_Place_Function_Call): Complete documentation.
(Validate_Subprogram_Calls): Check that the number of actuals (including
extra actuals) of calls in the subtree N match their corresponding
formals.
* freeze.adb
(Check_Itype): Add extra formals to anonymous access subprogram itypes.
(Freeze_Expression): Improve code that disables the addition of extra
formals to functions with foreign convention.
(Check_Extra_Formals): Moved to package Sem_Ch6 as Extra_Formals_OK.
(Freeze_Subprogram): Add extra formals to non-dispatching subprograms.
* frontend.adb
(Frontend): Validate all the subprogram calls; it can be disabled using
switch -gnatd_X
* sem_ch3.adb
(Access_Subprogram_Declaration): Defer the addition of extra formals to
the freezing point so that we know the convention.
(Check_Anonymous_Access_Component): Likewise.
(Derive_Subprogram): Fix documentation.
* sem_ch6.adb
(Has_Reliable_Extra_Formals): New subprogram.
(Check_Anonymous_Return): Fix check of access to class-wide limited
record types.
(Check_Untagged_Equality): Placed in alphabetical order.
(Extra_Formals_OK): Subprogram moved from freeze.adb.
(Extra_Formals_Match_OK): New subprogram.
(Has_BIP_Formals): New subprogram.
(Has_Extra_Formals): New subprograms.
(Needs_Accessibility_Check_Extra): New subprogram.
(Parent_Subprogram): New subprogram.
(Add_Extra_Formal): Minor code cleanup.
(Create_Extra_Formals): Enforce matching extra formals on overridden
and aliased entities.
* sem_ch6.ads
(Extra_Formals_Match_OK): New subprogram.
(Extra_Formals_OK): Subprogram moved from freeze.adb.
* sem_eval.adb
(Compile_Time_Known_Value): Improve predicate to avoid assertion
failure; found working on this ticket; this change does not
affect the behavior of the compiler because this subprogram
has an exception handler that returns False when the assertion
fails.
* sem_util.adb
(Needs_Result_Accessibility_Level): Do not return False for dispatching
operations compiled with Ada_Version < 2012 since they they may be
overridden by primitives compiled with Ada_Version >= Ada_2012.
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This patch prepares to move warning switches from Opt into Warnsw.
gcc/ada/
* warnsw.ads, warnsw.adb, fe.h, err_vars.ads, errout.ads: Move
Warning_Doc_Switch from Err_Vars to Warnsw. Access
Warn_On_Questionable_Layout on the C side via a function rather
than a variable, because we plan to turn the variables into
renamings, and you can't Export renamings.
* erroutc.adb, switch-c.adb, errout.adb: Likewise.
* gcc-interface/decl.cc: Use Get_Warn_On_Questionable_Layout
instead of Warn_On_Questionable_Layout.
* gcc-interface/Makefile.in (GNATMAKE_OBJS): Add warnsw.o, because
it is indirectly imported via Errout.
* gcc-interface/Make-lang.in (GNATBIND_OBJS): Likewise and remove
restrict.o (not needed).
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Shortly after the -gnatwc flag was introduced, its behavior was
tweaked, but its documentation was not updated accordingly.
gcc/ada/
* doc/gnat_ugn/building_executable_programs_with_gnat.rst
(-gnatwc): Fix flag documentation.
* gnat_ugn.texi: Regenerate.
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In some cases where a declare expression occurs in a deferred-freezing
context (e.g., within the default value for a discriminant or for a formal
parameter, or within the expression of an expression function), the compiler
generates a bugbox.
gcc/ada/
* sem_ch3.adb
(Analyze_Object_Declaration): Do not perform expansion actions if
In_Spec_Expression is true.
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This ensures that, during the analysis of the qualified expressions, type
conversions and unchecked type conversions, the determination of the type
of the node and the analysis of its expression are done in the same order.
No functional changes.
gcc/ada/
* sem_ch4.adb (Analyze_Qualified_Expression): Analyze the
expression only after setting the type.
(Analyze_Unchecked_Type_Conversion): Likewise.
(Analyze_Short_Circuit): Likewise for the operands.
(Analyze_Type_Conversion): Minor tweaks.
(Analyze_Unchecked_Expression): Likewise.
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The same statement is present a few lines above.
gcc/ada/
* sem_ch4.adb (Analyze_Qualified_Expression): Remove redundant
line.
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Classwide contracts are "spec expressions" as defined in the
documentation in sem.ads. Before this patch, the instances of
classwide contracts that are destined to class conditions merging
were not preanalyzed as spec expressions. That caused preanalysis to
emit spurious errors in some cases.
gcc/ada/
* contracts.adb (Preanalyze_Condition): Use
Preanalyze_Spec_Expression.
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Attributes Wide_Image and Wide_Wide_Image applied to composite types are
now expanded just like attribute Image.
gcc/ada/
* exp_imgv.adb
(Expand_Wide_Image_Attribute): Handle just like attribute Image.
(Expand_Wide_Wide_Image_Attribute): Likewise.
* exp_put_image.adb
(Build_Image_Call): Adapt to also work for Wide and Wide_Wide
attributes.
* exp_put_image.ads
(Build_Image_Call): Update comment.
* rtsfind.ads
(RE_Id): Support wide variants of Get.
(RE_Unit_Table): Likewise.
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Cleanup only.
gcc/ada/
* libgnat/a-ngcoar.ads, libgnat/a-ngcoar.adb: Remove extra spaces.
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Unneeded code found while experimenting with improved detection of
unreferenced objects.
gcc/ada/
* sem_ch12.adb (Validate_Formal_Type_Default): Remove call to
Collect_Interfaces, which had no effect apart from populating a
list that was not used; fix style.
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Minor improvements; found experimenting with improved detection of
unreferenced objects.
gcc/ada/
* exp_spark.adb (SPARK_Freeze_Type): Refine type of a local
object.
* sem_ch3.adb (Derive_Subprograms): Remove initial value for
New_Subp, which is in only written as an out parameter and never
read.
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gcc/ada/
* sem_res.adb (Resolve_If_Expression): Remove obsolete special
case.
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For array delta aggregates the base expression cannot be limited; for
record delta aggregates the base expression can only be limited if it is
a newly constructed object.
gcc/ada/
* sem_aggr.adb (Resolve_Delta_Aggregate): Implement rules related
to limited objects appearing as the base expression.
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Objects of a limited type can be initialized with "aggregates", which is
a collective term for ordinary aggregates (i.e. record aggregates and
array aggregates), extension aggregates and finally for delta
aggregates (introduced by Ada 2022).
gcc/ada/
* sem_ch3.adb (OK_For_Limited_Init_In_05): Handle delta aggregates
just like other aggregates.
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Implement a missing check related to record delta aggregates.
gcc/ada/
* sem_aggr.adb (Resolve_Delta_Record_Aggregate): Reject
expressions of a limited types.
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gcc/ada/
* exp_ch9.adb
(Build_Master_Entity): Handle missing case: when the context of
the master is a BIP function whose result type has tasks.
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Implement missing behavior of RM 13.9 (25.1/3): Tag_Error is raised by a
call of Interface_Ancestor_Tags and Is_Descendant_At_Same_Level, if any
tag passed is No_Tag. This change also fixes Descendant_Tag, which
relies on Is_Descendant_At_Same_Level. The remaining operations already
worked properly.
gcc/ada/
* libgnat/a-tags.adb
(Interface_Ancestor_Tags): Raise Tag_Error on No_Tag.
(Is_Descendant_At_Same_Level): Likewise.
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...along with -gnatw_Q.
gcc/ada/
* usage.adb: Add -gnatw_q and -gnatw_Q.
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libstdc++-v3/ChangeLog:
* doc/xml/authors.xml: Update the blurb listing my doc
contributions.
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This fixes a spurious comma before the list of authors in the PDF
version of the libstdc++ manual.
Also fix the commented-out examples which should show <personblurb> not
<authorblurb>.
libstdc++-v3/ChangeLog:
* doc/xml/authors.xml: Remove empty author element.
* doc/xml/manual/spine.xml: Likewise.
* doc/html/manual/index.html: Regenerate.
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This reverts commit 48fa4131e419942efc9dd762694fdc7e819de392.
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gcc/ChangeLog:
* config/i386/i386-options.cc (m_CORE_ATOM): New.
* config/i386/x86-tune.def
(X86_TUNE_SCHEDULE): Initial tune for CORE_ATOM.
(X86_TUNE_PARTIAL_REG_DEPENDENCY): Ditto.
(X86_TUNE_SSE_PARTIAL_REG_DEPENDENCY): Ditto.
(X86_TUNE_SSE_PARTIAL_REG_FP_CONVERTS_DEPENDENCY): Ditto.
(X86_TUNE_SSE_PARTIAL_REG_CONVERTS_DEPENDENCY): Ditto.
(X86_TUNE_DEST_FALSE_DEP_FOR_GLC): Ditto.
(X86_TUNE_MEMORY_MISMATCH_STALL): Ditto.
(X86_TUNE_USE_LEAVE): Ditto.
(X86_TUNE_PUSH_MEMORY): Ditto.
(X86_TUNE_USE_INCDEC): Ditto.
(X86_TUNE_INTEGER_DFMODE_MOVES): Ditto.
(X86_TUNE_PREFER_KNOWN_REP_MOVSB_STOSB): Ditto.
(X86_TUNE_MISALIGNED_MOVE_STRING_PRO_EPILOGUES): Ditto.
(X86_TUNE_USE_SAHF): Ditto.
(X86_TUNE_USE_BT): Ditto.
(X86_TUNE_AVOID_FALSE_DEP_FOR_BMI): Ditto.
(X86_TUNE_ONE_IF_CONV_INSN): Ditto.
(X86_TUNE_AVOID_MFENCE): Ditto.
(X86_TUNE_USE_SIMODE_FIOP): Ditto.
(X86_TUNE_EXT_80387_CONSTANTS): Ditto.
(X86_TUNE_SSE_UNALIGNED_LOAD_OPTIMAL): Ditto.
(X86_TUNE_SSE_UNALIGNED_STORE_OPTIMAL): Ditto.
(X86_TUNE_SSE_TYPELESS_STORES): Ditto.
(X86_TUNE_SSE_LOAD0_BY_PXOR): Ditto.
(X86_TUNE_AVOID_4BYTE_PREFIXES): Ditto.
(X86_TUNE_USE_GATHER_2PARTS): Ditto.
(X86_TUNE_USE_GATHER_4PARTS): Ditto.
(X86_TUNE_USE_GATHER): Ditto.
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gcc/analyzer/ChangeLog:
* region-model-impl-calls.cc
(region_model::impl_call_errno_location): New.
* region-model-manager.cc
(region_model_manager::region_model_manager): Initialize
m_thread_local_region and m_errno_region.
* region-model-manager.h (region_model_manager::get_errno_region):
New accessor.
(region_model_manager::m_thread_local_region): New.
(region_model_manager::m_errno_region): New.
* region-model.cc (region_model::on_call_pre): Special-case
"__errno_location".
(region_model::set_errno): New.
* region-model.h (impl_call_errno_location): New decl.
(region_model::set_errno): New decl.
* region.cc (thread_local_region::dump_to_pp): New.
(errno_region::dump_to_pp): New.
* region.h (enum memory_space): Add MEMSPACE_THREAD_LOCAL.
(enum region_kind): Add RK_THREAD_LOCAL and RK_ERRNO.
(class thread_local_region): New.
(is_a_helper <const thread_local_region *>::test): New.
(class errno_region): New.
(is_a_helper <const errno_region *>::test): New.
* store.cc (binding_cluster::escaped_p): New.
(store::escaped_p): Treat errno as always having escaped.
(store::replay_call_summary_cluster): Handle RK_THREAD_LOCAL and
RK_ERRNO.
* store.h (binding_cluster::escaped_p): Remove definition.
gcc/testsuite/ChangeLog:
* gcc.dg/analyzer/errno-1.c: New test.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
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This makes some followup code much cleaner.
gcc/analyzer/ChangeLog:
* call-info.cc (success_call_info::get_desc): Delete.
(failed_call_info::get_desc): Likewise.
(succeed_or_fail_call_info::get_desc): New.
* call-info.h (class succeed_or_fail_call_info): New.
(class success_call_info): Convert to a subclass of
succeed_or_fail_call_info.
(class failed_call_info): Likewise.
Signed-off-by: David Malcolm <dmalcolm@redhat.com>
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