// Canonicalize GE/LE comparisons to use GT/LT comparisons.
if (Cond == ISD::SETGE || Cond == ISD::SETUGE) {
if (C1 == MinVal) return DAG.getConstant(1, VT); // X >= MIN --> true
- // X >= C0 --> X > (C0-1)
- APInt C = C1-1;
- if (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
- isLegalICmpImmediate(C.getSExtValue())))
+ // X >= C0 --> X > (C0 - 1)
+ APInt C = C1 - 1;
+ ISD::CondCode NewCC = (Cond == ISD::SETGE) ? ISD::SETGT : ISD::SETUGT;
+ if ((DCI.isBeforeLegalizeOps() ||
+ isCondCodeLegal(NewCC, VT.getSimpleVT())) &&
+ (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
+ isLegalICmpImmediate(C.getSExtValue())))) {
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C, N1.getValueType()),
- (Cond == ISD::SETGE) ? ISD::SETGT : ISD::SETUGT);
+ NewCC);
+ }
}
if (Cond == ISD::SETLE || Cond == ISD::SETULE) {
if (C1 == MaxVal) return DAG.getConstant(1, VT); // X <= MAX --> true
- // X <= C0 --> X < (C0+1)
- APInt C = C1+1;
- if (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
- isLegalICmpImmediate(C.getSExtValue())))
+ // X <= C0 --> X < (C0 + 1)
+ APInt C = C1 + 1;
+ ISD::CondCode NewCC = (Cond == ISD::SETLE) ? ISD::SETLT : ISD::SETULT;
+ if ((DCI.isBeforeLegalizeOps() ||
+ isCondCodeLegal(NewCC, VT.getSimpleVT())) &&
+ (!N1C->isOpaque() || (N1C->isOpaque() && C.getBitWidth() <= 64 &&
+ isLegalICmpImmediate(C.getSExtValue())))) {
return DAG.getSetCC(dl, VT, N0,
DAG.getConstant(C, N1.getValueType()),
- (Cond == ISD::SETLE) ? ISD::SETLT : ISD::SETULT);
+ NewCC);
+ }
}
if ((Cond == ISD::SETLT || Cond == ISD::SETULT) && C1 == MinVal)