diff --git a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
index 2e09d379c48..d078bdcd5f0 100644
--- a/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
+++ b/lib/Target/PowerPC/PPCISelDAGToDAG.cpp
@@ -844,14 +844,6 @@ SDOperand PPCDAGToDAGISel::Select(SDOperand Op) {
   case ISD::CALL:               return SelectCALL(Op);
   case ISD::TAILCALL:           return SelectCALL(Op);
 
-  case ISD::UNDEF:
-    if (N->getValueType(0) == MVT::i32)
-      CurDAG->SelectNodeTo(N, PPC::IMPLICIT_DEF_GPR, MVT::i32);
-    else if (N->getValueType(0) == MVT::f32)
-      CurDAG->SelectNodeTo(N, PPC::IMPLICIT_DEF_F4, MVT::f32);
-    else 
-      CurDAG->SelectNodeTo(N, PPC::IMPLICIT_DEF_F8, MVT::f64);
-    return SDOperand(N, 0);
   case ISD::FrameIndex: {
     int FI = cast<FrameIndexSDNode>(N)->getIndex();
     if (N->hasOneUse()) {
diff --git a/lib/Target/PowerPC/PPCInstrInfo.td b/lib/Target/PowerPC/PPCInstrInfo.td
index ad16835f914..e858440f35d 100644
--- a/lib/Target/PowerPC/PPCInstrInfo.td
+++ b/lib/Target/PowerPC/PPCInstrInfo.td
@@ -153,9 +153,12 @@ let isLoad = 1 in {
 def ADJCALLSTACKDOWN : Pseudo<(ops u16imm:$amt), "; ADJCALLSTACKDOWN", []>;
 def ADJCALLSTACKUP : Pseudo<(ops u16imm:$amt), "; ADJCALLSTACKUP", []>;
 }
-def IMPLICIT_DEF_GPR : Pseudo<(ops GPRC:$rD), "; $rD = IMPLICIT_DEF_GPRC", []>;
-def IMPLICIT_DEF_F8  : Pseudo<(ops F8RC:$rD), "; %rD = IMPLICIT_DEF_F8", []>;
-def IMPLICIT_DEF_F4  : Pseudo<(ops F4RC:$rD), "; %rD = IMPLICIT_DEF_F4", []>;
+def IMPLICIT_DEF_GPR : Pseudo<(ops GPRC:$rD), "; $rD = IMPLICIT_DEF_GPRC",
+                              [(set GPRC:$rD, (undef))]>;
+def IMPLICIT_DEF_F8  : Pseudo<(ops F8RC:$rD), "; %rD = IMPLICIT_DEF_F8",
+                              [(set F8RC:$rD, (undef))]>;
+def IMPLICIT_DEF_F4  : Pseudo<(ops F4RC:$rD), "; %rD = IMPLICIT_DEF_F4",
+                              [(set F4RC:$rD, (undef))]>;
 
 // SELECT_CC_* - Used to implement the SELECT_CC DAG operation.  Expanded by the
 // scheduler into a branch sequence.