There are two ways to map a variable to its lexical scope. Lexical scope information is embedded in MDNode describing the variable. It is also available as a part of DebugLoc attached with DBG_VALUE instruction. DebugLoc attached with an instruction is less reliable in optimized code so use information embedded in the MDNode.

llvm-svn: 135629

1 files changed, 6 insertions, 0 deletions

diff --git a/llvm/lib/Analysis/DebugInfo.cpp b/llvm/lib/Analysis/DebugInfo.cpp
index 4dcf04ef216..dd85a4fcc80 100644
--- a/llvm/lib/Analysis/DebugInfo.cpp
+++ b/llvm/lib/Analysis/DebugInfo.cpp
@@ -116,6 +116,12 @@ unsigned DIVariable::getNumAddrElements() const {
   return DbgNode->getNumOperands()-8;
 }
 
+/// getInlinedAt - If this variable is inlined then return inline location.
+MDNode *DIVariable::getInlinedAt() {
+  if (getVersion() <= llvm::LLVMDebugVersion9)
+    return NULL;
+  return dyn_cast_or_null<MDNode>(DbgNode->getOperand(7));
+}
 
 //===----------------------------------------------------------------------===//
 // Predicates