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
diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index aa61283..d841e3c 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -461,17 +461,9 @@
}
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) {