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[CodeGen] Check if the Decl pointer passed is null, and if so, return

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early.

This is needed in a patch I plan to commit later, in which a null Decl
pointer is passed to SetLLVMFunctionAttributesForDefinition.

Relevant discussion is in http://reviews.llvm.org/D13525.

llvm-svn: 249722
This commit is contained in:
Akira Hatanaka
2015-10-08 19:30:57 +00:00
parent 8b5e7baab2
commit 200500d6d3
1 changed files with 15 additions and 7 deletions
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22
clang/lib/CodeGen/CodeGenModule.cpp
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@@ -786,6 +786,21 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
if (!hasUnwindExceptions(LangOpts))
B.addAttribute(llvm::Attribute::NoUnwind);
if (LangOpts.getStackProtector() == LangOptions::SSPOn)
B.addAttribute(llvm::Attribute::StackProtect);
else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
B.addAttribute(llvm::Attribute::StackProtectStrong);
else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
B.addAttribute(llvm::Attribute::StackProtectReq);
if (!D) {
F->addAttributes(llvm::AttributeSet::FunctionIndex,
llvm::AttributeSet::get(
F->getContext(),
llvm::AttributeSet::FunctionIndex, B));
return;
}
if (D->hasAttr<NakedAttr>()) {
// Naked implies noinline: we should not be inlining such functions.
B.addAttribute(llvm::Attribute::Naked);
@@ -810,13 +825,6 @@ void CodeGenModule::SetLLVMFunctionAttributesForDefinition(const Decl *D,
if (D->hasAttr<MinSizeAttr>())
B.addAttribute(llvm::Attribute::MinSize);
if (LangOpts.getStackProtector() == LangOptions::SSPOn)
B.addAttribute(llvm::Attribute::StackProtect);
else if (LangOpts.getStackProtector() == LangOptions::SSPStrong)
B.addAttribute(llvm::Attribute::StackProtectStrong);
else if (LangOpts.getStackProtector() == LangOptions::SSPReq)
B.addAttribute(llvm::Attribute::StackProtectReq);
F->addAttributes(llvm::AttributeSet::FunctionIndex,
llvm::AttributeSet::get(
F->getContext(), llvm::AttributeSet::FunctionIndex, B));