return true;
}
+static bool isPositive(Value *V, LazyValueInfo *LVI, Instruction *CxtI) {
+ Constant *Zero = ConstantInt::get(V->getType(), 0);
+ auto Result = LVI->getPredicateAt(ICmpInst::ICMP_SGE, V, Zero, CxtI);
+ return Result == LazyValueInfo::True;
+}
+
static bool hasPositiveOperands(BinaryOperator *SDI, LazyValueInfo *LVI) {
- Constant *Zero = ConstantInt::get(SDI->getType(), 0);
- for (Value *O : SDI->operands()) {
- auto Result = LVI->getPredicateAt(ICmpInst::ICMP_SGE, O, Zero, SDI);
- if (Result != LazyValueInfo::True)
- return false;
- }
- return true;
+ return all_of(SDI->operands(),
+ [&](Value *Op) { return isPositive(Op, LVI, SDI); });
}
/// Try to shrink a udiv/urem's width down to the smallest power of two that's
if (SDI->getType()->isVectorTy())
return false;
- Constant *Zero = ConstantInt::get(SDI->getType(), 0);
- if (LVI->getPredicateAt(ICmpInst::ICMP_SGE, SDI->getOperand(0), Zero, SDI) !=
- LazyValueInfo::True)
+ if (!isPositive(SDI->getOperand(0), LVI, SDI))
return false;
++NumAShrs;
Value *Base = SDI->getOperand(0);
- Constant *Zero = ConstantInt::get(Base->getType(), 0);
- if (LVI->getPredicateAt(ICmpInst::ICMP_SGE, Base, Zero, SDI) !=
- LazyValueInfo::True)
+ if (!isPositive(Base, LVI, SDI))
return false;
++NumSExt;