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Prevent cpu-specific/cpu-dispatch from giong on a lambda. 

It is non-sensical to use cpu-specific/cpu-dispatch multiversioning
on a lambda, so prevent it when trying to add the attribute.

llvm-svn: 341833
This commit is contained in:
Erich Keane 2018-09-10 14:31:56 +00:00
parent 5faf8a3d84
commit 659c871a1b
2 changed files with 11 additions and 0 deletions
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8
clang/lib/Sema/SemaDeclAttr.cpp
View File

@ -1842,6 +1842,14 @@ static void handleRestrictAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
static void handleCPUSpecificAttr(Sema &S, Decl *D, const ParsedAttr &AL) {
FunctionDecl *FD = cast<FunctionDecl>(D);
if (const auto *MD = dyn_cast<CXXMethodDecl>(D)) {
if (MD->getParent()->isLambda()) {
S.Diag(AL.getLoc(), diag::err_attribute_dll_lambda) << AL;
return;
}
}
if (!checkAttributeAtLeastNumArgs(S, AL, 1))
return;

3
clang/test/SemaCXX/attr-cpuspecific.cpp
View File

@ -109,3 +109,6 @@ int __attribute__((cpu_specific(sandybridge))) BadOutOfLine::foo(int) { return 1
// Ensure Cpp Spelling works.
[[clang::cpu_specific(ivybridge,atom)]] int CppSpelling(){}
// expected-error@+1 {{lambda cannot be declared 'cpu_dispatch'}}
auto x = []() __attribute__((cpu_dispatch(atom))) {};