}
case TargetLowering::Custom: {
SDValue Res = TLI.LowerOperation(SDValue(Node, 0), DAG);
- if (Res.getNode())
+ if (Res && Res != SDValue(Node, 0))
ReplaceNode(SDValue(Node, 0), Res);
return;
}
}
case TargetLowering::Custom: {
SDValue Res = TLI.LowerOperation(SDValue(Node, 0), DAG);
- if (Res.getNode())
+ if (Res && Res != SDValue(Node, 0))
ReplaceNode(SDValue(Node, 0), Res);
return;
}
break;
}
case ISD::FP_TO_FP16: {
+ if (!TM.Options.UseSoftFloat && TM.Options.UnsafeFPMath) {
+ SDValue Op = Node->getOperand(0);
+ MVT SVT = Op.getSimpleValueType();
+ if ((SVT == MVT::f64 || SVT == MVT::f80) &&
+ TLI.isOperationLegalOrCustom(ISD::FP_TO_FP16, MVT::f32)) {
+ // Under fastmath, we can expand this node into a fround followed by
+ // a float-half conversion.
+ SDValue FloatVal = DAG.getNode(ISD::FP_ROUND, dl, MVT::f32, Op,
+ DAG.getIntPtrConstant(0));
+ Results.push_back(
+ DAG.getNode(ISD::FP_TO_FP16, dl, MVT::i16, FloatVal));
+ break;
+ }
+ }
+
RTLIB::Libcall LC =
RTLIB::getFPROUND(Node->getOperand(0).getValueType(), MVT::f16);
assert(LC != RTLIB::UNKNOWN_LIBCALL && "Unable to expand fp_to_fp16");