EVT InVT = In.getValueType();
EVT ResVT = Op.getValueType();
- SDValue Shift32 = DAG.getConstant(32, MVT::i64);
if (InVT == MVT::i32 && ResVT == MVT::f32) {
- SDValue In64 = DAG.getNode(ISD::ANY_EXTEND, DL, MVT::i64, In);
- SDValue Shift = DAG.getNode(ISD::SHL, DL, MVT::i64, In64, Shift32);
- SDValue Out64 = DAG.getNode(ISD::BITCAST, DL, MVT::f64, Shift);
+ SDValue In64;
+ if (Subtarget.hasHighWord()) {
+ SDNode *U64 = DAG.getMachineNode(TargetOpcode::IMPLICIT_DEF, DL,
+ MVT::i64);
+ In64 = DAG.getTargetInsertSubreg(SystemZ::subreg_h32, DL,
+ MVT::i64, SDValue(U64, 0), In);
+ } else {
+ In64 = DAG.getNode(ISD::ANY_EXTEND, DL, MVT::i64, In);
+ In64 = DAG.getNode(ISD::SHL, DL, MVT::i64, In64,
+ DAG.getConstant(32, MVT::i64));
+ }
+ SDValue Out64 = DAG.getNode(ISD::BITCAST, DL, MVT::f64, In64);
return DAG.getTargetExtractSubreg(SystemZ::subreg_h32,
DL, MVT::f32, Out64);
}
SDValue In64 = DAG.getTargetInsertSubreg(SystemZ::subreg_h32, DL,
MVT::f64, SDValue(U64, 0), In);
SDValue Out64 = DAG.getNode(ISD::BITCAST, DL, MVT::i64, In64);
- SDValue Shift = DAG.getNode(ISD::SRL, DL, MVT::i64, Out64, Shift32);
- SDValue Out = DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, Shift);
- return Out;
+ if (Subtarget.hasHighWord())
+ return DAG.getTargetExtractSubreg(SystemZ::subreg_h32, DL,
+ MVT::i32, Out64);
+ SDValue Shift = DAG.getNode(ISD::SRL, DL, MVT::i64, Out64,
+ DAG.getConstant(32, MVT::i64));
+ return DAG.getNode(ISD::TRUNCATE, DL, MVT::i32, Shift);
}
llvm_unreachable("Unexpected bitcast combination");
}