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DebugInfo: Rewrite llvm::getDISubprogram(), NFC 

Simplify implementation of `llvm::getDISubprogram()`.  I might go
through and see how difficult it is to update the users, since this
function doesn't really seem necessary anymore.

llvm-svn: 233662
This commit is contained in:
Duncan P. N. Exon Smith 2015-03-31 02:06:28 +00:00
parent 3b960c9da0
commit dd77af870f
1 changed files with 3 additions and 11 deletions
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14
llvm/lib/IR/DebugInfo.cpp
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@ -461,17 +461,9 @@ DIVariable llvm::cleanseInlinedVariable(MDNode *DV, LLVMContext &VMContext) {
}
DISubprogram llvm::getDISubprogram(const MDNode *Scope) {
DIDescriptor D(Scope);
if (D.isSubprogram())
return DISubprogram(Scope);
if (D.isLexicalBlockFile())
return getDISubprogram(DILexicalBlockFile(Scope).getContext());
if (D.isLexicalBlock())
return getDISubprogram(DILexicalBlock(Scope).getContext());
return DISubprogram();
if (auto *LocalScope = dyn_cast_or_null<MDLocalScope>(Scope))
return LocalScope->getSubprogram();
return nullptr;
}
DISubprogram llvm::getDISubprogram(const Function *F) {