Create a mapping between the landing pad basic block and the call site index for later use.

llvm-svn: 141125

2 files changed, 5 insertions, 0 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index daefaf0fa05..6eb862a0525 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5250,6 +5250,8 @@ void SelectionDAGBuilder::LowerCallTo(ImmutableCallSite CS, SDValue Callee,
     unsigned CallSiteIndex = MMI.getCurrentCallSite();
     if (CallSiteIndex) {
       MMI.setCallSiteBeginLabel(BeginLabel, CallSiteIndex);
+      LPadToCallSiteMap[LandingPad] = CallSiteIndex;
+
       // Now that the call site is handled, stop tracking it.
       MMI.setCurrentCallSite(0);
     }
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
index 9039f4defa8..521e4d39384 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.h
@@ -320,6 +320,9 @@ public:
   /// GFI - Garbage collection metadata for the function.
   GCFunctionInfo *GFI;
 
+  /// LPadToBeginLabelMap - Map a landing pad to the begin label.
+  DenseMap<MachineBasicBlock*, unsigned> LPadToCallSiteMap;
+
   /// HasTailCall - This is set to true if a call in the current
   /// block has been translated as a tail call. In this case,
   /// no subsequent DAG nodes should be created.