1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index d6d8cf54cb0..1dc9d7460f8 100644
--- a/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/llvm/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -4440,6 +4440,12 @@ SDValue SelectionDAG::getNode(unsigned Opcode, const SDLoc &DL, EVT VT,
     if (Operand.isUndef())
       return getUNDEF(VT);
     break;
+  case ISD::SINT_TO_FP:
+  case ISD::UINT_TO_FP:
+    // [us]itofp(undef) = 0, because the result value is bounded.
+    if (Operand.isUndef())
+      return getConstantFP(0.0, DL, VT);
+    break;
   case ISD::SIGN_EXTEND:
     assert(VT.isInteger() && Operand.getValueType().isInteger() &&
            "Invalid SIGN_EXTEND!");