diff --git a/llvm/lib/CodeGen/TargetLoweringBase.cpp b/llvm/lib/CodeGen/TargetLoweringBase.cpp
index aeb321f..b9cdbea 100644
--- a/llvm/lib/CodeGen/TargetLoweringBase.cpp
+++ b/llvm/lib/CodeGen/TargetLoweringBase.cpp
@@ -666,6 +666,7 @@
 
   // These library functions default to expand.
   for (MVT VT : {MVT::f32, MVT::f64, MVT::f128}) {
+    setOperationAction(ISD::FCBRT,      VT, Expand);
     setOperationAction(ISD::FLOG ,      VT, Expand);
     setOperationAction(ISD::FLOG2,      VT, Expand);
     setOperationAction(ISD::FLOG10,     VT, Expand);