For example:
#define FOO(x) (x)
FOO({});
... forms a statement-expression after macro expansion. This warning
applies to '({' and '})' delimiting statement-expressions, '[[' and ']]'
delimiting attributes, and '::*' introducing a pointer-to-member.
The warning for forming these compound tokens across macro expansions
(or across files!) is enabled by default; the warning for whitespace
within the tokens is not, but is included in -Wall.
Differential Revision: https://reviews.llvm.org/D86751
This patch implements the builtins for Vector Load with Zero and Signed Extend Builtins (lxvr_x for b, h, w, d), and adds the appropriate test cases for these builtins. The builtins utilize the vector load instructions itnroduced with ISA 3.1.
Differential Revision: https://reviews.llvm.org/D82502#inline-797941
This relands D85743 with a fix for test
CodeGen/attr-arm-sve-vector-bits-call.c that disables the new pass
manager with '-fno-experimental-new-pass-manager'. Test was failing due
to IR differences with the new pass manager which broke the Fuchsia
builder [1]. Reverted in 2e7041f.
[1] http://lab.llvm.org:8011/builders/fuchsia-x86_64-linux/builds/10375
Original summary:
This patch implements codegen for the 'arm_sve_vector_bits' type
attribute, defined by the Arm C Language Extensions (ACLE) for SVE [1].
The purpose of this attribute is to define vector-length-specific (VLS)
versions of existing vector-length-agnostic (VLA) types.
VLSTs are represented as VectorType in the AST and fixed-length vectors
in the IR everywhere except in function args/return. Implemented in this
patch is codegen support for the following:
* Implicit casting between VLA <-> VLS types.
* Coercion of VLS types in function args/return.
* Mangling of VLS types.
Casting is handled by the CK_BitCast operation, which has been extended
to support the two new vector kinds for fixed-length SVE predicate and
data vectors, where the cast is implemented through memory rather than a
bitcast which is unsupported. Implementing this as a normal bitcast
would require relaxing checks in LLVM to allow bitcasting between
scalable and fixed types. Another option was adding target-specific
intrinsics, although codegen support would need to be added for these
intrinsics. Given this, casting through memory seemed like the best
approach as it's supported today and existing optimisations may remove
unnecessary loads/stores, although there is room for improvement here.
Coercion of VLSTs in function args/return from fixed to scalable is
implemented through the AArch64 ABI in TargetInfo.
The VLA and VLS types are defined by the ACLE to map to the same
machine-level SVE vectors. VLS types are mangled in the same way as:
__SVE_VLS<typename, unsigned>
where the first argument is the underlying variable-length type and the
second argument is the SVE vector length in bits. For example:
#if __ARM_FEATURE_SVE_BITS==512
// Mangled as 9__SVE_VLSIu11__SVInt32_tLj512EE
typedef svint32_t vec __attribute__((arm_sve_vector_bits(512)));
// Mangled as 9__SVE_VLSIu10__SVBool_tLj512EE
typedef svbool_t pred __attribute__((arm_sve_vector_bits(512)));
#endif
The latest ACLE specification (00bet5) does not contain details of this
mangling scheme, it will be specified in the next revision. The
mangling scheme is otherwise defined in the appendices to the Procedure
Call Standard for the Arm Architecture, see [2] for more information.
[1] https://developer.arm.com/documentation/100987/latest
[2] https://github.com/ARM-software/abi-aa/blob/master/aapcs64/aapcs64.rst#appendix-c-mangling
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D85743
This patch changes ElementCount so that the Min and Scalable
members are now private and can only be accessed via the get
functions getKnownMinValue() and isScalable(). In addition I've
added some other member functions for more commonly used operations.
Hopefully this makes the class more useful and will reduce the
need for calling getKnownMinValue().
Differential Revision: https://reviews.llvm.org/D86065
When guessing whether a closing paren is then end of a cast expression also
skip over pointer qualifiers while looking for TT_PointerOrReference.
This prevents some address-of and dereference operators from being parsed
as a binary operator.
Before:
x = (foo *const) * v;
x = (foo *const volatile restrict __attribute__((foo)) _Nonnull _Null_unspecified _Nonnull) & v;
After:
x = (foo *const)*v;
x = (foo *const volatile restrict __attribute__((foo)) _Nonnull _Null_unspecified _Nonnull)&v;
Reviewed By: MyDeveloperDay
Differential Revision: https://reviews.llvm.org/D86716
`{@code xxxxx}` triggers a Doxygen bug. The bug may be matching the
close brace with the open brace of the namespace
declaration (`namespace clang {` or `namespace ento {`).
Differential Revision: https://reviews.llvm.org/D85105
It's not undefined behavior for an unsigned left shift to overflow (i.e. to
shift bits out), but it has been the source of bugs and exploits in certain
codebases in the past. As we do in other parts of UBSan, this patch adds a
dynamic checker which acts beyond UBSan and checks other sources of errors. The
option is enabled as part of -fsanitize=integer.
The flag is named: -fsanitize=unsigned-shift-base
This matches shift-base and shift-exponent flags.
<rdar://problem/46129047>
Differential Revision: https://reviews.llvm.org/D86000
For macOS, the code says, the XRay flag is only supported on x86_64.
Updating the test and making that check explicit.
Differential Revision: https://reviews.llvm.org/D85773
This third patch in the series removes version 5.0 string from
test cases making them check for default version. It also add test
cases for version 4.5.
Reviewed By: ABataev
Differential Revision: https://reviews.llvm.org/D85214
Parameters were in a different order in the header and in the implementation.
Fix surrounding comments a bit.
Differential Revision: https://reviews.llvm.org/D86691
llvm::isa<>() and llvm::isa_and_not_null<>() template functions recently became
variadic. Unfortunately this causes crashes in case of isa_and_not_null<>()
and incorrect behavior in isa<>(). This patch fixes this issue.
Differential Revision: https://reviews.llvm.org/D85728
The successfulness of a dynamic cast depends only on the C++ class, not the pointer or reference. Thus if *A is a *B, then &A is a &B,
const *A is a const *B etc. This patch changes DynamicCastInfo to store
and check the cast between the unqualified pointed/referenced types.
It also removes e.g. SubstTemplateTypeParmType from both the pointer
and the pointed type.
Differential Revision: https://reviews.llvm.org/D85752
Many OpenMP Clang tests do not RUN for version 4.5 and the default
version. This second patch in the series handles test cases which
require updation in CHECK lines along with adding RUN lines for
the default version. It involves updating line number of pragmas.
Reviewed By: ABataev
Differential Revision: https://reviews.llvm.org/D85150
This patch adjusts the following ARM/AArch64 LLVM IR intrinsics:
- neon_bfmmla
- neon_bfmlalb
- neon_bfmlalt
so that they take and return bf16 and float types. Previously these
intrinsics used <8 x i8> and <4 x i8> vectors (a rudiment from
implementation lacking bf16 IR type).
The neon_vbfdot[q] intrinsics are adjusted similarly. This change
required some additional selection patterns for vbfdot itself and
also for vector shuffles (in a previous patch) because of SelectionDAG
transformations kicking in and mangling the original code.
This patch makes the generated IR cleaner (less useless bitcasts are
produced), but it does not affect the final assembly.
Reviewed By: dmgreen
Differential Revision: https://reviews.llvm.org/D86146
See RFC for background:
http://lists.llvm.org/pipermail/llvm-dev/2020-June/142744.html
Note that the runtime changes will be sent separately (hopefully this
week, need to add some tests).
This patch includes the LLVM pass to instrument memory accesses with
either inline sequences to increment the access count in the shadow
location, or alternatively to call into the runtime. It also changes
calls to memset/memcpy/memmove to the equivalent runtime version.
The pass is modeled on the address sanitizer pass.
The clang changes add the driver option to invoke the new pass, and to
link with the upcoming heap profiling runtime libraries.
Currently there is no attempt to optimize the instrumentation, e.g. to
aggregate updates to the same memory allocation. That will be
implemented as follow on work.
Differential Revision: https://reviews.llvm.org/D85948
This patch implements codegen for the 'arm_sve_vector_bits' type
attribute, defined by the Arm C Language Extensions (ACLE) for SVE [1].
The purpose of this attribute is to define vector-length-specific (VLS)
versions of existing vector-length-agnostic (VLA) types.
VLSTs are represented as VectorType in the AST and fixed-length vectors
in the IR everywhere except in function args/return. Implemented in this
patch is codegen support for the following:
* Implicit casting between VLA <-> VLS types.
* Coercion of VLS types in function args/return.
* Mangling of VLS types.
Casting is handled by the CK_BitCast operation, which has been extended
to support the two new vector kinds for fixed-length SVE predicate and
data vectors, where the cast is implemented through memory rather than a
bitcast which is unsupported. Implementing this as a normal bitcast
would require relaxing checks in LLVM to allow bitcasting between
scalable and fixed types. Another option was adding target-specific
intrinsics, although codegen support would need to be added for these
intrinsics. Given this, casting through memory seemed like the best
approach as it's supported today and existing optimisations may remove
unnecessary loads/stores, although there is room for improvement here.
Coercion of VLSTs in function args/return from fixed to scalable is
implemented through the AArch64 ABI in TargetInfo.
The VLA and VLS types are defined by the ACLE to map to the same
machine-level SVE vectors. VLS types are mangled in the same way as:
__SVE_VLS<typename, unsigned>
where the first argument is the underlying variable-length type and the
second argument is the SVE vector length in bits. For example:
#if __ARM_FEATURE_SVE_BITS==512
// Mangled as 9__SVE_VLSIu11__SVInt32_tLj512EE
typedef svint32_t vec __attribute__((arm_sve_vector_bits(512)));
// Mangled as 9__SVE_VLSIu10__SVBool_tLj512EE
typedef svbool_t pred __attribute__((arm_sve_vector_bits(512)));
#endif
The latest ACLE specification (00bet5) does not contain details of this
mangling scheme, it will be specified in the next revision. The
mangling scheme is otherwise defined in the appendices to the Procedure
Call Standard for the Arm Architecture, see [2] for more information.
[1] https://developer.arm.com/documentation/100987/latest
[2] https://github.com/ARM-software/abi-aa/blob/master/aapcs64/aapcs64.rst#appendix-c-mangling
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D85743
Motivating use case is ".cu.cc" extensions used in some bazel projects.
Alternative is to work around this with IncludeIsMainRegex in styles.
I proposed this approach because it seems like a better default.
Differential Revision: https://reviews.llvm.org/D86597
It isn't very wise to pass an assembly file to the compiler and tell it to compile as a C file and hope that the compiler recognizes it as assembly instead.
Simply don't mark the file as C and CMake will recognize the rest.
This was attempted earlier in https://reviews.llvm.org/D85706, but reverted due to architecture issues on Apple.
Subsequent digging revealed a similar change was done earlier for libunwind in https://reviews.llvm.org/rGb780df052dd2b246a760d00e00f7de9ebdab9d09.
Afterwards workarounds were added for MinGW and Apple:
* https://reviews.llvm.org/rGb780df052dd2b246a760d00e00f7de9ebdab9d09
* https://reviews.llvm.org/rGd4ded05ba851304b26a437896bc3962ef56f62cb
The workarounds in libunwind and compiler-rt are unified and comments added pointing to each other.
The workaround is updated to only be used for MinGW for CMake versions before 3.17, which fixed the issue (https://gitlab.kitware.com/cmake/cmake/-/merge_requests/4287).
Additionally fixed Clang not being passed as the assembly compiler for compiler-rt runtime build.
Example error:
[525/634] Building C object lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o
FAILED: lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o
/opt/tooling/drive/host/bin/clang --target=aarch64-linux-gnu -I/opt/tooling/drive/llvm/compiler-rt/lib/tsan/.. -isystem /opt/tooling/drive/toolchain/opt/drive/toolchain/include -x c -Wall -Wno-unused-parameter -fno-lto -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -Wno-non-virtual-dtor -fPIE -fno-rtti -Wframe-larger-than=530 -Wglobal-constructors --sysroot=. -MD -MT lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o -MF lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o.d -o lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o -c /opt/tooling/drive/llvm/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
/opt/tooling/drive/llvm/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S:29:1: error: expected identifier or '('
.section .text
^
1 error generated.
Differential Revision: https://reviews.llvm.org/D86308
This patch implements the semantics for the 'arm_sve_vector_bits' type
attribute, defined by the Arm C Language Extensions (ACLE) for SVE [1].
The purpose of this attribute is to define vector-length-specific (VLS)
versions of existing vector-length-agnostic (VLA) types.
The semantics were already implemented by D83551, although the
implementation approach has since changed to represent VLSTs as
VectorType in the AST and fixed-length vectors in the IR everywhere
except in function args/returns. This is described in the prototype
patch D85128 demonstrating the new approach.
The semantic changes added in D83551 are changed since the
AttributedType is replaced by VectorType in the AST. Minimal changes
were necessary in the previous patch as the canonical type for both VLA
and VLS was the same (i.e. sizeless), except in constructs such as
globals and structs where sizeless types are unsupported. This patch
reverts the changes that permitted VLS types that were represented as
sizeless types in such circumstances, and adds support for implicit
casting between VLA <-> VLS types as described in section 3.7.3.2 of the
ACLE.
Since the SVE builtin types for bool and uint8 are both represented as
BuiltinType::UChar in VLSTs, two new vector kinds are implemented to
distinguish predicate and data vectors.
[1] https://developer.arm.com/documentation/100987/latest
Reviewed By: aaron.ballman
Differential Revision: https://reviews.llvm.org/D85736
This patch adds type information for SVE ACLE vector types,
by describing them as vectors, with a lower bound of 0, and
an upper bound described by a DWARF expression using the
AArch64 Vector Granule register (VG), which contains the
runtime multiple of 64bit granules in an SVE vector.
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D86101
Previously a NodeRole would generally be prefixed with the `NodeKind`,
we remove this prefix, as it we redundant and made tests more noisy.
Differential Revision: https://reviews.llvm.org/D86636
This patch implements the function prototypes vec_mulh and vec_dive in order to
utilize the vector multiply high (vmulh[s|u][w|d]) and vector divide extended
(vdive[s|u][w|d]) instructions introduced in Power10.
Differential Revision: https://reviews.llvm.org/D82609
This patch defaults to -mtune=generic unless -march is present. If -march is present we'll use the empty string unless its overridden by mtune. The back should use the target cpu if the tune-cpu isn't present.
It also adds AST serialization support to fix some tests that emit AST and parse it back. These tests diff the IR against the output from not going through AST. So if we don't serialize the tune CPU we fail the diff.
Differential Revision: https://reviews.llvm.org/D86488
This fixes a crash when declaring a destructor with a wrong name, then
writing result to pch file and loading it again. The PCH storage uses
DeclarationNameKey as key and it is the same key for both the invalid
destructor and the implicit one that was created because the other one
was invalid. When querying for the Foo::~Foo we end up getting
Foo::~Bar, which is then rejected and we end up with nullptr in
CXXRecordDecl::GetDestructor().
Fixes https://bugs.llvm.org/show_bug.cgi?id=47270
Differential Revision: https://reviews.llvm.org/D86624
The non-standard header file `<sysexits.h>` provides some return values.
`EX_IOERR` is used to as a special value to signal a broken pipe to the clang driver.
On z/OS Unix System Services, this header file does not exists. This patch
- adds a check for `<sysexits.h>`, removing the dependency on `LLVM_ON_UNIX`
- adds a new header file `llvm/Support/ExitCodes`, which either includes
`<sysexits.h>` or defines `EX_IOERR`
- updates the users of `EX_IOERR` to include the new header file
Reviewed By: hubert.reinterpretcast
Differential Revision: https://reviews.llvm.org/D83472
Quiet mode is very useful for scripting, when only the diff format output is
required, or no output if not formatting is needed.
In case of no modified files, git-clang-format will output to screen even though
the quiet mode enabled.
This patch changes this behavior, so if quiet flag passes in - no output will be
available, even if no modified files exists.
Differential Revision: https://reviews.llvm.org/D85485
Add an option to directly specify where the msvc toolchain lives for
clang-cl and avoid unwanted file and registry probes.
Differential revision: https://reviews.llvm.org/D85998
* Generate `CallExpression` syntax node for all semantic nodes inheriting from
`CallExpr` with call-expression syntax - except `CUDAKernelCallExpr`.
* Implement all the accessors
* Arguments of `CallExpression` have their own syntax node which is based on
the `List` base API
Differential Revision: https://reviews.llvm.org/D86544
Before the change the diagnostic for
module unknown.submodule {}
was "error: expected module name" which is incorrect and misleading
because both "unknown" and "submodule" are valid module names.
We already have a better error message when a parent module is a
submodule itself and is missing. Make the error for a missing top-level
module more like the one for a submodule.
rdar://problem/64424407
Reviewed By: bruno
Differential Revision: https://reviews.llvm.org/D84458
This patch adds the z/OS target and defines macros as a stepping stone
towards enabling a native build on z/OS.
Reviewed By: hubert.reinterpretcast
Differential Revision: https://reviews.llvm.org/D85324
For some reason the ctor homing case was before the template
specialization case, and could have returned false too early.
I moved the code out into a separate function to avoid this.
This reverts commit 05777ab941.
This patch adds the -Xclang option
"-fexperimental-debug-variable-locations" and same LLVM CodeGen option,
to pick which variable location tracking solution to use.
Right now all the switch does is pick which LiveDebugValues
implementation to use, the normal VarLoc one or the instruction
referencing one in rGae6f78824031. Over time, the aim is to add fragments
of support in aid of the value-tracking RFC:
http://lists.llvm.org/pipermail/llvm-dev/2020-February/139440.html
also controlled by this command line switch. That will slowly move
variable locations to be defined by an instruction calculating a value,
and a DBG_INSTR_REF instruction referring to that value. Thus, this is
going to grow into a "use the new kind of variable locations" switch,
rather than just "use the new LiveDebugValues implementation".
Differential Revision: https://reviews.llvm.org/D83048
We should see `NodeRole` information in the dump because that exposes how the
accessors will behave.
Functional changes in the dump:
* Surround Leaf tokens with `'`
* Append `Node` dumps with `NodeRole` information, except for unknown roles
* Append marks to `Node` dumps, instead of prepending
Non-functional changes:
* `::dumpTokens(llvm::raw_ostream, ArrayRef<syntax::Token>, const
SourceManager &SM)` always received as parameter a `syntax::Token *`
pointing to `Leaf::token()`. Changed the function to
`dumpLeaf(llvm::raw_ostream, syntax::Leaf *, const SourceManager&)`
* `dumpTree` acted on a Node, rename to `dumpNode`
Differential Revision: https://reviews.llvm.org/D85330
Support -march=sapphirerapids for x86.
Compare with Icelake Server, it includes 14 more new features. They are
amxtile, amxint8, amxbf16, avx512bf16, avx512vp2intersect, cldemote,
enqcmd, movdir64b, movdiri, ptwrite, serialize, shstk, tsxldtrk, waitpkg.
Reviewed By: craig.topper
Differential Revision: https://reviews.llvm.org/D86503
For some reason the ctor homing case was before the template
specialization case, and could have returned false too early.
I moved the code out into a separate function to avoid this.
Also added a run line to the template specialization test. I guess
all the -debug-info-kind=limited tests should still pass with =constructor,
but it's probably unnecessary to test for all of those.
Differential Revision: https://reviews.llvm.org/D86491
This patch adds frontend and backend options to enable and disable
the PowerPC MMA operations added in ISA 3.1. Instructions using these
options will be added in subsequent patches.
Differential Revision: https://reviews.llvm.org/D81442
OpenMP 5.0 supports nested declare target regions. So, in general,it is
allow to mark a declarationas declare target with different device_type
or link type. Patch adds support for such kind of nesting.
Differential Revision: https://reviews.llvm.org/D86239
Summary:
Whith the number of projects growing, it is important to be able to
filter them in a more convenient way than by names. It is especially
important for benchmarks, when it is not viable to analyze big
projects 20 or 50 times in a row.
Because of this reason, this commit adds a notion of sizes and a
filtering interface that puts a limit on a maximum size of the project
to analyze or benchmark.
Sizes assigned to the projects in this commit, do not directly
correspond to the number of lines or files in the project. The key
factor that is important for the developers of the analyzer is the
time it takes to analyze the project. And for this very reason,
"size" basically helps to cluster projects based on their analysis
time.
Differential Revision: https://reviews.llvm.org/D83942
The orignal patch with the missing 'REQUIRES: asserts' as there is a debug-only
flag used in the test.
Original summary:
D81347 changes the ASTFileSignature to be an array of 20 uint8_t instead of 5
uint32_t. However, it didn't update the code in ObjectFilePCHContainerOperations
that creates the dwoID in the module from the ASTFileSignature
(`Buffer->Signature` being the array subclass that is now `std::array<uint8_t,
20>` instead of `std::array<uint32_t, 5>`).
```
uint64_t Signature = [..] (uint64_t)Buffer->Signature[1] << 32 | Buffer->Signature[0]
```
This code works with the old ASTFileSignature (where two uint32_t are enough to
fill the uint64_t), but after the patch this only took two bytes from the
ASTFileSignature and only partly filled the Signature uint64_t.
This caused that the dwoID in the module ref and the dwoID in the actual module
no longer match (which in turns causes that LLDB keeps warning about the dwoID's
not matching when debugging -gmodules-compiled binaries).
This patch just unifies the logic for turning the ASTFileSignature into an
uint64_t which makes the dwoID match again (and should prevent issues like that
in the future).
Reviewed By: aprantl, dang
Differential Revision: https://reviews.llvm.org/D84013
This changes the methods in CGExprScalar to use
FixedPointBuilder to generate IR for fixed-point
conversions and operations.
Since FixedPointBuilder emits padded operations slightly
differently than the original code, some tests change.
Reviewed By: leonardchan
Differential Revision: https://reviews.llvm.org/D86282
This relands D84013 but with a test that relies on less shell features to
hopefully make the test pass on Fuchsia (where the test from the previous patch
version strangely failed with a plain "Exit code 1").
Original summary:
D81347 changes the ASTFileSignature to be an array of 20 uint8_t instead of 5 uint32_t.
However, it didn't update the code in ObjectFilePCHContainerOperations that creates
the dwoID in the module from the ASTFileSignature (`Buffer->Signature` being the
array subclass that is now `std::array<uint8_t, 20>` instead of `std::array<uint32_t, 5>`).
```
uint64_t Signature = [..] (uint64_t)Buffer->Signature[1] << 32 | Buffer->Signature[0]
```
This code works with the old ASTFileSignature (where two uint32_t are enough to
fill the uint64_t), but after the patch this only took two bytes from the ASTFileSignature
and only partly filled the Signature uint64_t.
This caused that the dwoID in the module ref and the dwoID in the actual module no
longer match (which in turns causes that LLDB keeps warning about the dwoID's not
matching when debugging -gmodules-compiled binaries).
This patch just unifies the logic for turning the ASTFileSignature into an uint64_t which
makes the dwoID match again (and should prevent issues like that in the future).
Reviewed By: aprantl, dang
Differential Revision: https://reviews.llvm.org/D84013
If not overridden, AddClangSystemIncludeArgs's implementation is empty, so by
default, no system include args are added to the Clang driver. This means that
invoking Clang without the frontend must include a manual -I/usr/include flag,
which is inconsistent behavior. Therefore, override and implement this method
to match. Some boilerplate is also borrowed for handling of the other driver
flags.
While we are here, also override and enable HasNativeLLVMSupport.
Patch by: 3405691582 (dana koch)
Differential Revision: https://reviews.llvm.org/D86412
As suggested by @rsmith on PR47267, by replacing the builtin_memcpy bitcast pattern with builtin_bit_cast we can use _castf32_u32, _castu32_f32, _castf64_u64 and _castu64_f64 inside constant expresssions (constexpr). Although __builtin_bit_cast was added for c++20 it works on all clang c/c++ modes.
Differential Revision: https://reviews.llvm.org/D86398
gcc errors on this, but I'm nervous that since -mtune has been
ignored by clang for so long that there may be code bases out
there that pass 32-bit cpus to clang.
This enables us to use the __builtin_rotateleft / __builtin_rotateright 8/16/32/64 intrinsics inside constexpr code.
Differential Revision: https://reviews.llvm.org/D86342
This commit teaches ASTDeclReader::attachPreviousDecl to successfully merge
two Decl's when one contains an inheritable attribute like the
MSInheritanceAttr. Usually, attributes that are needed to be present along the
redeclaration chain are attached during ASTReading from
ASTDeclReader::attachPreviousDecl, but no such thing is done for inheritable
attributes. Currently, only the logic for merging MSInheritanceAttr is
provided.
Currently ConstantExpr::getWithOperands does not handle FNeg and
subsequently treats FNeg as binary operator, leading to an assertion
failure or segmentation fault if built without assertions.
Originally I reproduced this with llvm-dis on a bitcode file, which I
unfortunately cannot share and also cannot really reduce.
But PR45426 describes the same issue and has a reproducer with Clang, so
I'll go with that.
Reviewed By: aprantl
Differential Revision: https://reviews.llvm.org/D86274
D81347 changes the ASTFileSignature to be an array of 20 uint8_t instead of 5
uint32_t. However, it didn't update the code in ObjectFilePCHContainerOperations
that creates the dwoID in the module from the ASTFileSignature
(`Buffer->Signature` being the array subclass that is now `std::array<uint8_t,
20>` instead of `std::array<uint32_t, 5>`).
```
uint64_t Signature = [..] (uint64_t)Buffer->Signature[1] << 32 | Buffer->Signature[0]
```
This code works with the old ASTFileSignature (where two uint32_t are enough to
fill the uint64_t), but after the patch this only took two bytes from the
ASTFileSignature and only partly filled the Signature uint64_t.
This caused that the dwoID in the module ref and the dwoID in the actual module
no longer match (which in turns causes that LLDB keeps warning about the dwoID's
not matching when debugging -gmodules-compiled binaries).
This patch just unifies the logic for turning the ASTFileSignature into an
uint64_t which makes the dwoID match again (and should prevent issues like that
in the future).
Reviewed By: aprantl, dang
Differential Revision: https://reviews.llvm.org/D84013
Commit dbcfbffc adds ppc.readflm and ppc.setflm intrinsics to read or
write FPSCR register. This patch adds them to Clang.
Reviewed By: steven.zhang
Differential Revision: https://reviews.llvm.org/D85874
explicit keyword is declared outside of class is invalid, invalid explicit declaration is handled inside DiagnoseFunctionSpecifiers() function. To avoid compiler crash in case of invalid explicit declaration, remove assertion.
Reviewed By: rsmith
Differential Revision: https://reviews.llvm.org/D83929
HeaderSearch was marking requested HeaderFileInfo as Resolved only based on
the presence of ExternalSource. As the result, using any module was enough
to set ExternalSource and headers unknown to this module would have
HeaderFileInfo with empty fields, including `isImport = 0`, `NumIncludes = 0`.
Such HeaderFileInfo was preserved without changes regardless of how the
header was used in other modules and caused incorrect result in
`HeaderSearch::ShouldEnterIncludeFile`.
Fix by marking HeaderFileInfo as Resolved only if ExternalSource knows
about this header.
rdar://problem/62126911
Reviewed By: bruno
Differential Revision: https://reviews.llvm.org/D80263
No functionality change intended: there doesn't seem to be any way to
cause Clang to print such a value, but they can show up when dumping
APValues from a debugger.
This is a first step patch to enable constexpr support and testing to a large number of x86 intrinsics.
All I've done here is provide a DEFAULT_FN_ATTRS_CONSTEXPR variant to our existing DEFAULT_FN_ATTRS tag approach that adds constexpr on c++ builds. The clang cuda headers do something similar.
I've started with POPCNT mainly as its tiny and are wrappers to generic __builtin_* intrinsics which already act as constexpr.
Differential Revision: https://reviews.llvm.org/D86229
This reverts commit d58fd4e521. This broke
compiler-rt compilation on macOS:
codesign --sign - /Users/buildslave/jenkins/workspace/lldb-cmake/lldb-build/lib/clang/12.0.99/lib/darwin/libclang_rt.tsan_ios_dynamic.dylib
ld: warning: ignoring file projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan_ios_dynamic.dir/rtl/tsan_rtl_amd64.S.o, building for iOS-arm64 but attempting to link with file built for iOS Simulator-x86_64
ld: warning: ignoring file projects/compiler-rt/lib/tsan/CMakeFiles/clang_rt.tsan_ios_dynamic.dir/rtl/tsan_rtl_aarch64.S.o, building for iOS-arm64 but attempting to link with file built for iOS Simulator-x86_64
Undefined symbols for architecture arm64:
"_wrap__setjmp", referenced from:
substitution__setjmp in tsan_interceptors_posix.cpp.o
"_wrap_setjmp", referenced from:
substitution_setjmp in tsan_interceptors_posix.cpp.o
"_wrap_sigsetjmp", referenced from:
substitution_sigsetjmp in tsan_interceptors_posix.cpp.o
ld: symbol(s) not found for architecture arm64
This addresses a FIXME in ASTReader.
Modules were already re-exported for Preprocessor, but not for Sema.
The result was that, with -fmodules-local-submodule-visibility, all AST
nodes belonging to a module that was loaded in a premable where not
accesible from the main part of the file and a diagnostic recommending
importing those modules would be generated.
Differential Revision: https://reviews.llvm.org/D86069
When preamble contains #undef, indexing code finds the matching #define
and uses that during indexing. However, it would only look for local
definitions. If the macro was defined in a module, MacroInfo
would be nullptr and clangd would crash.
This change makes clangd ignore any #undef without a matching #define
inside the same TU.
The indexing of macros happens for preamble only, so then #undef must be
in the preamble, which is why we need two .h files in a test.
Note that clangd is currently not ready for module support, but this
brings us one step closer.
This was previously attempted in
4061d9e42c, but had to be reverted due to
broken test. This version fixes that test-only bug by setting a custom module
cache path to avoid re-use of modules across test invocations.
Differential Revision: https://reviews.llvm.org/D85923
The tests were not written with update_cc_test_checks
in mind, which make them difficult to update. Fix this.
Also, some of the consteval tests were outright broken,
since the CHECK lines were wrong.
Other than this, the semantics of the tests are preserved.
This patch moves FixedPointSemantics and APFixedPoint
from Clang to LLVM ADT.
This will make it easier to use the fixed-point
classes in LLVM for constructing an IR builder for
fixed-point and for reusing the APFixedPoint class
for constant evaluation purposes.
RFC: http://lists.llvm.org/pipermail/llvm-dev/2020-August/144025.html
Reviewed By: leonardchan, rjmccall
Differential Revision: https://reviews.llvm.org/D85312
In D79719, LayoutField was refactored to fetch the size of field
types in bits and then convert to chars, rather than fetching
them in chars directly. This is not ideal, since it makes the
calculations char size dependent, and breaks for sizes that
are not a multiple of the char size.
This patch changes it to use getTypeInfoInChars instead of
getTypeInfo.
Reviewed By: efriedma
Differential Revision: https://reviews.llvm.org/D85191
It isn't very wise to pass an assembly file to the compiler and tell it to compile as a C file and hope that the compiler recognizes it as assembly instead.
Instead enable the ASM language and mark the files as being ASM.
[525/634] Building C object lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o
FAILED: lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o
/opt/tooling/drive/host/bin/clang --target=aarch64-linux-gnu -I/opt/tooling/drive/llvm/compiler-rt/lib/tsan/.. -isystem /opt/tooling/drive/toolchain/opt/drive/toolchain/include -x c -Wall -Wno-unused-parameter -fno-lto -fPIC -fno-builtin -fno-exceptions -fomit-frame-pointer -funwind-tables -fno-stack-protector -fno-sanitize=safe-stack -fvisibility=hidden -fno-lto -O3 -gline-tables-only -Wno-gnu -Wno-variadic-macros -Wno-c99-extensions -Wno-non-virtual-dtor -fPIE -fno-rtti -Wframe-larger-than=530 -Wglobal-constructors --sysroot=. -MD -MT lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o -MF lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o.d -o lib/tsan/CMakeFiles/clang_rt.tsan-aarch64.dir/rtl/tsan_rtl_aarch64.S.o -c /opt/tooling/drive/llvm/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S
/opt/tooling/drive/llvm/compiler-rt/lib/tsan/rtl/tsan_rtl_aarch64.S:29:1: error: expected identifier or '('
.section .text
^
1 error generated.
Fixed Clang not being passed as the assembly compiler for compiler-rt runtime build.
Patch By: tambre
Differential Revision: https://reviews.llvm.org/D85706
This adds parsing and codegen support for tune in target attribute.
I've implemented this so that arch in the target attribute implicitly disables tune from the command line. I'm not sure what gcc does here. But since -march implies -mtune. I assume 'arch' in the target attribute implies tune in the target attribute.
Differential Revision: https://reviews.llvm.org/D86187
for array bounds, not "integer constant" rules.
For an array bound of class type, this causes us to perform an implicit
conversion to size_t, instead of looking for a unique conversion to
integral or unscoped enumeration type. This affects which cases are
valid when a class has multiple implicit conversion functions to
different types.
Some code bases out there pass -mtune=generic to clang. This would have
been ignored prior to D85384. Now it results in an error
because "generic" isn't recognized by isValidCPUName.
And if we let it go through to the backend as a tune
setting it would get the tune flags closer to i386 rather
than a modern CPU.
I plan to change what tune=generic does in the backend in
a future patch. And allow this in the frontend.
But this should be a quick fix for the error some users
are seeing.
If the function is not marked exlicitly as declare target and it calls
function(s), marked as declare target device_type(host), these host-only
functions should not be dignosed as used in device mode, if the caller
function is not used in device mode too.
Differential Revision: https://reviews.llvm.org/D86164
[Clang] Fix BZ47169, loader_uninitialized on incomplete types
Reported by @erichkeane. Fix proposed by @erichkeane works, tests included.
Bug introduced in D74361. Crash was on querying a CXXRecordDecl for
hasTrivialDefaultConstructor on an incomplete type. Fixed by calling
RequireCompleteType in the right place.
Reviewed By: erichkeane
Differential Revision: https://reviews.llvm.org/D85990
If a folder's name, where the test fortran.f95 is running, has cc1 the test
fails because of CHECK-ASM-NOT: cc1.
The solution used in this patch is to add quotation mark around cc1 and cc1as
because the driver returns these flags with quotation marks ("")
Reviewed By: DavidTruby, echristo
Differential Revision: https://reviews.llvm.org/D86132
This function returns a struct `BuiltinVectorTypeInfo` that contains
the builtin vector's element type, element count and number of vectors
(used for vector tuples).
Reviewed By: c-rhodes
Differential Revision: https://reviews.llvm.org/D86100
Richard Smith