getresult type is the type of indexed aggregate element

llvm-svn: 47392
diff --git a/llvm/lib/VMCore/Instructions.cpp b/llvm/lib/VMCore/Instructions.cpp
index d700902..c1e5833 100644
--- a/llvm/lib/VMCore/Instructions.cpp
+++ b/llvm/lib/VMCore/Instructions.cpp
@@ -2708,7 +2708,7 @@
 GetResultInst::GetResultInst(Value *Aggregate, unsigned Index,
                              const std::string &Name,
                              Instruction *InsertBef)
-  : Instruction(Aggr->getType(),
+  : Instruction(cast<StructType>(Aggregate->getType())->getElementType(Index),
                 GetResult, &Aggr, 1, InsertBef) {
   assert(isValidOperands(Aggregate, Index) && "Invalid GetResultInst operands!");
   Aggr.init(Aggregate, this);