+
+ // If the input is a legal type, and SINT_TO_FP is not legal on this target,
+ // but UINT_TO_FP is legal on this target, try to convert.
+ if (!TLI.isOperationLegal(ISD::SINT_TO_FP, OpVT) &&
+ TLI.isOperationLegal(ISD::UINT_TO_FP, OpVT)) {
+ // If the sign bit is known to be zero, we can change this to UINT_TO_FP.
+ if (DAG.SignBitIsZero(N0))
+ return DAG.getNode(ISD::UINT_TO_FP, VT, N0);
+ }
+
+