case Intrinsic::usub_with_overflow:
case Intrinsic::sadd_with_overflow:
case Intrinsic::ssub_with_overflow:
+ case Intrinsic::smul_with_overflow:
case Intrinsic::convert_from_fp16:
case Intrinsic::convert_to_fp16:
return true;
if (ConstantInt *Op2 = dyn_cast<ConstantInt>(Operands[1])) {
switch (F->getIntrinsicID()) {
default: break;
- case Intrinsic::uadd_with_overflow: {
- Constant *Res = ConstantExpr::getAdd(Op1, Op2); // result.
+ case Intrinsic::sadd_with_overflow:
+ case Intrinsic::uadd_with_overflow:
+ case Intrinsic::ssub_with_overflow:
+ case Intrinsic::usub_with_overflow:
+ case Intrinsic::smul_with_overflow: {
+ APInt Res;
+ bool Overflow;
+ switch (F->getIntrinsicID()) {
+ default: assert(0 && "Invalid case");
+ case Intrinsic::sadd_with_overflow:
+ Res = Op1->getValue().sadd_ov(Op2->getValue(), Overflow);
+ break;
+ case Intrinsic::uadd_with_overflow:
+ Res = Op1->getValue().uadd_ov(Op2->getValue(), Overflow);
+ break;
+ case Intrinsic::ssub_with_overflow:
+ Res = Op1->getValue().ssub_ov(Op2->getValue(), Overflow);
+ break;
+ case Intrinsic::usub_with_overflow:
+ Res = Op1->getValue().usub_ov(Op2->getValue(), Overflow);
+ break;
+ case Intrinsic::smul_with_overflow:
+ Res = Op1->getValue().smul_ov(Op2->getValue(), Overflow);
+ break;
+ }
Constant *Ops[] = {
- Res, ConstantExpr::getICmp(CmpInst::ICMP_ULT, Res, Op1) // overflow.
+ ConstantInt::get(F->getContext(), Res),
+ ConstantInt::get(Type::getInt1Ty(F->getContext()), Overflow)
};
return ConstantStruct::get(F->getContext(), Ops, 2, false);
}
- case Intrinsic::usub_with_overflow: {
- Constant *Res = ConstantExpr::getSub(Op1, Op2); // result.
- Constant *Ops[] = {
- Res, ConstantExpr::getICmp(CmpInst::ICMP_UGT, Res, Op1) // overflow.
- };
- return ConstantStruct::get(F->getContext(), Ops, 2, false);
- }
- case Intrinsic::sadd_with_overflow: {
- Constant *Res = ConstantExpr::getAdd(Op1, Op2); // result.
- Constant *Overflow = ConstantExpr::getSelect(
- ConstantExpr::getICmp(CmpInst::ICMP_SGT,
- ConstantInt::get(Op1->getType(), 0), Op1),
- ConstantExpr::getICmp(CmpInst::ICMP_SGT, Res, Op2),
- ConstantExpr::getICmp(CmpInst::ICMP_SLT, Res, Op2)); // overflow.
-
- Constant *Ops[] = { Res, Overflow };
- return ConstantStruct::get(F->getContext(), Ops, 2, false);
- }
- case Intrinsic::ssub_with_overflow: {
- Constant *Res = ConstantExpr::getSub(Op1, Op2); // result.
- Constant *Overflow = ConstantExpr::getSelect(
- ConstantExpr::getICmp(CmpInst::ICMP_SGT,
- ConstantInt::get(Op2->getType(), 0), Op2),
- ConstantExpr::getICmp(CmpInst::ICMP_SLT, Res, Op1),
- ConstantExpr::getICmp(CmpInst::ICMP_SGT, Res, Op1)); // overflow.
-
- Constant *Ops[] = { Res, Overflow };
- return ConstantStruct::get(F->getContext(), Ops, 2, false);
- }
}
}