Negative indices aren't allowed here.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43161 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
index c11103682506495f971e054e94b5130984ac295e..9516dff6cb80407812af98279a243a0ccaa07ec3 100644 (file)
--- a/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/LegalizeDAG.cpp
@@ -4139,7 +4139,7 @@ SDOperand SelectionDAGLegalize::ExpandEXTRACT_VECTOR_ELT(SDOperand Op) {
         MVT::getSizeInBits(TLI.getPointerTy()))
       Idx = DAG.getNode(ISD::TRUNCATE, TLI.getPointerTy(), StackPtr);
     else
-      Idx = DAG.getNode(ISD::SIGN_EXTEND, TLI.getPointerTy(), StackPtr);
+      Idx = DAG.getNode(ISD::ZERO_EXTEND, TLI.getPointerTy(), StackPtr);
 
     StackPtr = DAG.getNode(ISD::ADD, Idx.getValueType(), Idx, StackPtr);