Make a provision to encode inline location in a variable. This will enable dwarf writer to easily distinguish between two instances of a inlined variable in one basic block.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135457 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 1 deletions

diff --git a/lib/Analysis/DebugInfo.cpp b/lib/Analysis/DebugInfo.cpp
index b42e946f2f..8fac3fb721 100644
--- a/lib/Analysis/DebugInfo.cpp
+++ b/lib/Analysis/DebugInfo.cpp
@@ -111,7 +111,9 @@ Function *DIDescriptor::getFunctionField(unsigned Elt) const {
 unsigned DIVariable::getNumAddrElements() const {
   if (getVersion() <= llvm::LLVMDebugVersion8)
     return DbgNode->getNumOperands()-6;
-  return DbgNode->getNumOperands()-7;
+  if (getVersion() == llvm::LLVMDebugVersion9)
+    return DbgNode->getNumOperands()-7;
+  return DbgNode->getNumOperands()-8;
 }
 
 
@@ -760,6 +762,19 @@ NamedMDNode *llvm::getOrInsertFnSpecificMDNode(Module &M, StringRef FuncName) {
   return M.getOrInsertNamedMetadata(Name.str());
 }
 
+/// createInlinedVariable - Create a new inlined variable based on current
+/// variable.
+/// @param DV            Current Variable.
+/// @param InlinedScope  Location at current variable is inlined.
+DIVariable llvm::createInlinedVariable(MDNode *DV, MDNode *InlinedScope,
+                                       LLVMContext &VMContext) {
+  SmallVector<Value *, 16> Elts;
+  // Insert inlined scope as 7th element.
+  for (unsigned i = 0, e = DV->getNumOperands(); i != e; ++i)
+    i == 7 ? Elts.push_back(InlinedScope) :
+             Elts.push_back(DV->getOperand(i));
+  return DIVariable(MDNode::get(VMContext, Elts));
+}
 
 //===----------------------------------------------------------------------===//
 // DebugInfoFinder implementations.