Summary:
e.g.
auto foo() {
return no_such_thing; // Return value is a TypoExpr
}
using T = decltype(foo()); // Uh-oh, undeduced auto.
Reviewers: rsmith
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61649
llvm-svn: 360224
Summary:
- For template arguments ending with `>>>`, we should cease lookahead
and treat it as type-id firstly, so that deduction could work
properly.
Reviewers: tra, yaxunl
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61396
llvm-svn: 360214
Summary:
A COFF stub indirects the reference to a symbol through memory. A
.refptr.$sym global variable pointer is created to refer to $sym.
Typically mingw uses these for external global variable declarations,
but we can use them for weak function declarations as well.
Updates the dso_local classification to add a special case for
extern_weak symbols on COFF in both clang and LLVM.
Fixes PR37598
Reviewers: smeenai, mstorsjo
Subscribers: hiraditya, cfe-commits, llvm-commits
Tags: #clang, #llvm
Differential Revision: https://reviews.llvm.org/D61615
llvm-svn: 360207
When looking for the location context of the call site, unwrap block invocation
contexts because they are attached to the current AnalysisDeclContext
while what we need is the previous AnalysisDeclContext.
Differential Revision: https://reviews.llvm.org/D61545
llvm-svn: 360202
This trips over a few other limitations, but in the interests of incremental development I'm starting here & I'll look at the issues with -verify and filesystem checks (the fact that the behavior depends on the existence of a 'foo' directory even though it shouldn't need it), etc.
Reviewers: rsmith
Differential Revision: https://reviews.llvm.org/D61656
llvm-svn: 360195
This commit appears to be breaking stage-2 builds on GreenDragon. The
OpenMP wrappers for cmath and math.h are copied into the root of the
resource directory and cause a cyclic dependency in module 'Darwin':
Darwin -> std -> Darwin. This blows up when CMake is testing for modules
support and breaks all stage 2 module builds, including the ThinLTO bot
and all LLDB bots.
CMake Error at cmake/modules/HandleLLVMOptions.cmake:497 (message):
LLVM_ENABLE_MODULES is not supported by this compiler
llvm-svn: 360192
Kernel function names have to be preserved as in the original
source to be able to access them from the host API side.
This commit also adds restriction to kernels that prevents them
from being used in overloading, templates, etc.
Differential Revision: https://reviews.llvm.org/D60454
llvm-svn: 360152
Keep looking for decl-specifiers after an unknown identifier. Don't
issue diagnostics about an error type specifier conflicting with later
type specifiers.
llvm-svn: 360117
This matches the behavior of the old pass manager. There are some
targets that don't have target machine at all (e.g. le32, spir) which
whose tests would never run with new pass manager. Similarly, we would
need to disable tests for targets that are disabled.
Differential Revision: https://reviews.llvm.org/D58374
llvm-svn: 360100
This reverts r357452 (git commit 21eb771dcb).
This was causing strange optimization-related test failures on an internal test. Will followup with more details offline.
llvm-svn: 360086
declaration.
It should emit _only_ an implicit-function-declaration warning, not
both of them.
Differential Revision: https://reviews.llvm.org/D59711
llvm-svn: 360084
In MinGW, setjmp isn't expanded as a builtin in the compiler (like it
is for MSVC), but manually hooked up as calls to the right underlying
functions in headers. Using the actual CRT's real setjmp/longjmp
functions requires this intrinsic. (Currently this is worked around by
using MinGW specific reimplementations of setjmp/longjmp on aarch64.)
Differential Revision: https://reviews.llvm.org/D61592
llvm-svn: 360082
default(none).
If the combined directive has default(none) clause and has clauses for
inner directive that reference some variables, for which data-sharing
attributes are not specified, the error messages should be emitted for
such variables.
llvm-svn: 360073
Summary:
In this patch we propose a temporary solution to resolving math functions for the NVPTX toolchain, temporary until OpenMP variant is supported by Clang.
We intercept the inclusion of math.h and cmath headers and if we are in the OpenMP-NVPTX case, we re-use CUDA's math function resolution mechanism.
Authors:
@gtbercea
@jdoerfert
Reviewers: hfinkel, caomhin, ABataev, tra
Reviewed By: hfinkel, ABataev, tra
Subscribers: mgorny, guansong, cfe-commits, jdoerfert
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61399
llvm-svn: 360063
If the `default(none)` was specified for the construct, we might miss
diagnostic for the globals without explicitly specified data-sharing
attributes. Patch fixes this problem.
llvm-svn: 360061
Summary:
Where semicolon is required in any case. Here's a list of completions
that now have a semicolon:
- namespace <name> = <target>;
- using namespace <name>;
- using <qualifier>::<name>;
- continue;
- break;
- goto <label>;
- return;
- return <expression>;
Reviewers: gribozavr
Reviewed By: gribozavr
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61589
llvm-svn: 360042
This caused Clang to start erroring on the following:
struct S {
template <typename = int> explicit S();
};
struct T : S {};
struct U : T {
U();
};
U::U() {}
$ clang -c /tmp/x.cc
/tmp/x.cc:10:4: error: call to implicitly-deleted default constructor of 'T'
U::U() {}
^
/tmp/x.cc:5:12: note: default constructor of 'T' is implicitly deleted
because base class 'S' has no default constructor
struct T : S {};
^
1 error generated.
See discussion on the cfe-commits email thread.
This also reverts the follow-ups r359966 and r359968.
> this patch adds support for the explicit bool specifier.
>
> Changes:
> - The parsing for the explicit(bool) specifier was added in ParseDecl.cpp.
> - The storage of the explicit specifier was changed. the explicit specifier was stored as a boolean value in the FunctionDeclBitfields and in the DeclSpec class. now it is stored as a PointerIntPair<Expr*, 2> with a flag and a potential expression in CXXConstructorDecl, CXXDeductionGuideDecl, CXXConversionDecl and in the DeclSpec class.
> - Following the AST change, Serialization, ASTMatchers, ASTComparator and ASTPrinter were adapted.
> - Template instantiation was adapted to instantiate the potential expressions of the explicit(bool) specifier When instantiating their associated declaration.
> - The Add*Candidate functions were adapted, they now take a Boolean indicating if the context allowing explicit constructor or conversion function and this boolean is used to remove invalid overloads that required template instantiation to be detected.
> - Test for Semantic and Serialization were added.
>
> This patch is not yet complete. I still need to check that interaction with CTAD and deduction guides is correct. and add more tests for AST operations. But I wanted first feedback.
> Perhaps this patch should be spited in smaller patches, but making each patch testable as a standalone may be tricky.
>
> Patch by Tyker
>
> Differential Revision: https://reviews.llvm.org/D60934
llvm-svn: 360024
Summary:
1. Enable infrastructure of AVX512_BF16, which is supported for BFLOAT16 in Cooper Lake;
2. Enable intrinsics for VCVTNE2PS2BF16, VCVTNEPS2BF16 and DPBF16PS instructions, which are Vector Neural Network Instructions supporting BFLOAT16 inputs and conversion instructions from IEEE single precision.
For more details about BF16 intrinsic, please refer to the latest ISE document: https://software.intel.com/en-us/download/intel-architecture-instruction-set-extensions-programming-reference
Patch by LiuTianle
Reviewers: craig.topper, smaslov, LuoYuanke, wxiao3, annita.zhang, spatel, RKSimon
Reviewed By: craig.topper
Subscribers: mgorny, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D60552
llvm-svn: 360018
where either the modification or the other access is unreachable.
This reverts r359984 (which reverted r359962). The bug in clang-tidy's
test suite exposed by the original commit was fixed in r360009.
llvm-svn: 360010
new expression.
This was voted into C++20 as a defect report resolution, so we
retroactively apply it to all prior language modes (though it can never
actually be used before C++11 mode).
llvm-svn: 360006
error: unable to create target: 'No available targets are compatible with triple "< ... any 64-bit target triple ... >"'
I didn't find any 64-bit dependencies for the test and I think removing '-m64' option should fix the problem and allow this test for any target specified by LLVM_DEFAULT_TARGET_TRIPLE.
Patch by Vlad Vereschaka.
Differential Revision: https://reviews.llvm.org/D61345
llvm-svn: 360005
https://bugs.llvm.org/show_bug.cgi?id=41741
Pretty much the same as D61246 and D61106, this time for __complex__ types. Upon
further investigation, I realized that we should regard all types
Type::isScalarType returns true for as primitive, so I merged
isMemberPointerType(), isBlockPointerType() and isAnyComplexType()` into that
instead.
I also stumbled across yet another bug,
https://bugs.llvm.org/show_bug.cgi?id=41753, but it seems to be unrelated to
this checker.
Differential Revision: https://reviews.llvm.org/D61569
llvm-svn: 359998
Summary:
currently for:
```
template<typename ... T>
void f(T... t) {
auto l = [t...]{};
}
```
`clang -ast-print file.cpp`
outputs:
```
template <typename ...T> void f(T ...t) {
auto l = [t] {
}
;
}
```
notice that there is not `...` in the capture list of the lambda. this patch fixes this issue. and add test for it.
Patch by Tyker
Reviewers: rsmith
Reviewed By: rsmith
Subscribers: cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D61556
llvm-svn: 359980
* __VA_OPT__ is expanded if the *expanded* __VA_ARGS__ is non-empty,
not if the original argument contained no tokens.
* Placemarkers at the start and end of __VA_OPT__ are retained just
long enough to paste them with adjacent ## operators. We never paste
"across" a discarded placemarker.
llvm-svn: 359964
When a FunctionProtoType is in the original type in a DecayedType, the decayed
type is a PointerType which points back the original FunctionProtoType. The
visitor for ODRHashing will attempt to process both Type's, doing double work.
By chaining together multiple DecayedType's and FunctionProtoType's, this would
result in 2^N Type's visited only N DecayedType's and N FunctionProtoType's
exsit. Another bug where VisitDecayedType and VisitAdjustedType did
redundant work doubled the work at each level, giving 4^N Type's visited. This
patch removed the double work and detects when a FunctionProtoType decays to
itself to only check the Type once. This lowers the exponential runtime to
linear runtime. Fixes https://bugs.llvm.org/show_bug.cgi?id=41625
llvm-svn: 359960
state when it's encountered while evaluating a constexpr function.
We attempt to follow GCC trunk's behavior here, but it is somewhat
inscrutible, so our behavior is only approximately the same for now.
Specifically, we only permit modification of objects whose lifetime
began within the operand of the __builtin_constant_p. GCC appears to
have effectively the same restriction, but also some unknown restriction
based on where and how the local state of the constexpr function is
mentioned within the operand (see added testcases).
llvm-svn: 359958
When user specifies non-existent directory to -fcrash-diagnostics-dir,
create it rather than failing with an error as would be the case before.
Differential Revision: https://reviews.llvm.org/D61542
llvm-svn: 359954
this patch adds support for the explicit bool specifier.
Changes:
- The parsing for the explicit(bool) specifier was added in ParseDecl.cpp.
- The storage of the explicit specifier was changed. the explicit specifier was stored as a boolean value in the FunctionDeclBitfields and in the DeclSpec class. now it is stored as a PointerIntPair<Expr*, 2> with a flag and a potential expression in CXXConstructorDecl, CXXDeductionGuideDecl, CXXConversionDecl and in the DeclSpec class.
- Following the AST change, Serialization, ASTMatchers, ASTComparator and ASTPrinter were adapted.
- Template instantiation was adapted to instantiate the potential expressions of the explicit(bool) specifier When instantiating their associated declaration.
- The Add*Candidate functions were adapted, they now take a Boolean indicating if the context allowing explicit constructor or conversion function and this boolean is used to remove invalid overloads that required template instantiation to be detected.
- Test for Semantic and Serialization were added.
This patch is not yet complete. I still need to check that interaction with CTAD and deduction guides is correct. and add more tests for AST operations. But I wanted first feedback.
Perhaps this patch should be spited in smaller patches, but making each patch testable as a standalone may be tricky.
Patch by Tyker
Differential Revision: https://reviews.llvm.org/D60934
llvm-svn: 359949
Summary:
By default, `parseCommandLineOptions()` will accept either a
`-` or `--` prefix for long options -- options with names longer than
a single character.
While this change does not affect behavior, it will be helpful with a
subsequent change that requires long options use the `--` prefix.
Reviewers: rnk, thopre
Reviewed By: thopre
Subscribers: thopre, cfe-commits, hiraditya, llvm-commits
Tags: #llvm, #clang
Differential Revision: https://reviews.llvm.org/D61269
llvm-svn: 359909
The warning isn't very useful when the function is an ObjC method.
rdar://problem/41561853
Differential Revision: https://reviews.llvm.org/D61147
llvm-svn: 359864
Because diagnostics and their notes are not connected at the API level,
if the error message for an overload is emitted, then the overload
candidates are completed - if a diagnostic is emitted during that work,
the notes related to overload candidates would be attached to the latter
diagnostic, not the original error. Sort of worse, if the latter
diagnostic was disabled, the notes are disabled.
Reviewers: rsmith
Differential Revision: https://reviews.llvm.org/D61357
llvm-svn: 359854
__builtin_constant_p.
If the operand of __builtin_constant_p is not constant and has
side-effects, then code controlled by a branch on it is unreachable and
we should not emit runtime behavior warnings in such code.
llvm-svn: 359844
If an address_space attribute is defined in a macro, print the macro instead
when diagnosing a warning or error for incompatible pointers with different
address_spaces.
We allow this for all attributes (not just address_space), and for multiple
attributes declared in the same macro.
Differential Revision: https://reviews.llvm.org/D51329
llvm-svn: 359826
Sam McCall