diff --git a/lib/Target/R600/AMDILISelDAGToDAG.cpp b/lib/Target/R600/AMDILISelDAGToDAG.cpp
index 93432a2c97a..9a5e9e6147a 100644
--- a/lib/Target/R600/AMDILISelDAGToDAG.cpp
+++ b/lib/Target/R600/AMDILISelDAGToDAG.cpp
@@ -766,7 +766,8 @@ void AMDGPUDAGToDAGISel::PostprocessISelDAG() {
         continue;
       }
 
-      if (!Val.getNode()->isMachineOpcode()) {
+      if (!Val.getNode()->isMachineOpcode() ||
+          Val.getNode()->getMachineOpcode() == AMDGPU::IMPLICIT_DEF) {
         continue;
       }