Add a pre-dispatch SjLj EH hook on the unwind edge for targets to do any

setup they require. Use this for ARM/Darwin to rematerialize the base
pointer from the frame pointer when required. rdar://8564268

llvm-svn: 116879

1 files changed, 6 insertions, 2 deletions

diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 04c424f6729..e2b1bb4b751 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -4319,8 +4319,12 @@ SelectionDAGBuilder::visitIntrinsicCall(const CallInst &I, unsigned Intrinsic) {
   }
   case Intrinsic::eh_sjlj_longjmp: {
     DAG.setRoot(DAG.getNode(ISD::EH_SJLJ_LONGJMP, dl, MVT::Other,
-                            getRoot(),
-                            getValue(I.getArgOperand(0))));
+                            getRoot(), getValue(I.getArgOperand(0))));
+    return 0;
+  }
+  case Intrinsic::eh_sjlj_dispatch_setup: {
+    DAG.setRoot(DAG.getNode(ISD::EH_SJLJ_DISPATCHSETUP, dl, MVT::Other,
+                            getRoot(), getValue(I.getArgOperand(0))));
     return 0;
   }