return nullptr;
}
+ Constant *CastedTo = nullptr;
+
if (isa<ZExtInst>(CI) && CmpI->isUnsigned())
- return ConstantExpr::getTrunc(C, CI->getSrcTy());
+ CastedTo = ConstantExpr::getTrunc(C, CI->getSrcTy());
+
+ if (isa<SExtInst>(CI) && CmpI->isSigned())
+ CastedTo = ConstantExpr::getTrunc(C, CI->getSrcTy(), true);
if (isa<TruncInst>(CI))
- return ConstantExpr::getIntegerCast(C, CI->getSrcTy(), CmpI->isSigned());
+ CastedTo = ConstantExpr::getIntegerCast(C, CI->getSrcTy(), CmpI->isSigned());
if (isa<FPTruncInst>(CI))
- return ConstantExpr::getFPExtend(C, CI->getSrcTy(), true);
+ CastedTo = ConstantExpr::getFPExtend(C, CI->getSrcTy(), true);
if (isa<FPExtInst>(CI))
- return ConstantExpr::getFPTrunc(C, CI->getSrcTy(), true);
-
- // Sophisticated constants can have values which we cannot easily reason
- // about. Skip them for the fp<->int case.
- if (isa<ConstantExpr>(C))
- return nullptr;
-
- Constant *CastedTo = nullptr;
-
- // This is only valid if the truncated value can be sign-extended
- // back to the original value.
- if (isa<SExtInst>(CI) && CmpI->isSigned())
- CastedTo = ConstantExpr::getTrunc(C, CI->getSrcTy(), true);
+ CastedTo = ConstantExpr::getFPTrunc(C, CI->getSrcTy(), true);
if (isa<FPToUIInst>(CI))
CastedTo = ConstantExpr::getUIToFP(C, CI->getSrcTy(), true);