if (!Step) return 0;
return SE.getAddRecExpr(Start, Step, AR->getLoop());
}
+ return 0;
}
// Distribute the sdiv over add operands, if the add doesn't overflow.
}
return SE.getAddExpr(Ops);
}
+ return 0;
}
// Check for a multiply operand that we can pull RHS out of.
- if (const SCEVMulExpr *Mul = dyn_cast<SCEVMulExpr>(LHS))
+ if (const SCEVMulExpr *Mul = dyn_cast<SCEVMulExpr>(LHS)) {
if (IgnoreSignificantBits || isMulSExtable(Mul, SE)) {
SmallVector<const SCEV *, 4> Ops;
bool Found = false;
}
return Found ? SE.getMulExpr(Ops) : 0;
}
+ return 0;
+ }
// Otherwise we don't know.
return 0;
for (SmallSetVector<int64_t, 8>::const_iterator
I = Factors.begin(), E = Factors.end(); I != E; ++I) {
int64_t Factor = *I;
- Formula F = Base;
// Check that the multiplication doesn't overflow.
- if (F.AM.BaseOffs == INT64_MIN && Factor == -1)
+ if (Base.AM.BaseOffs == INT64_MIN && Factor == -1)
continue;
- F.AM.BaseOffs = (uint64_t)Base.AM.BaseOffs * Factor;
- if (F.AM.BaseOffs / Factor != Base.AM.BaseOffs)
+ int64_t NewBaseOffs = (uint64_t)Base.AM.BaseOffs * Factor;
+ if (NewBaseOffs / Factor != Base.AM.BaseOffs)
continue;
// Check that multiplying with the use offset doesn't overflow.
if (Offset / Factor != LU.MinOffset)
continue;
+ Formula F = Base;
+ F.AM.BaseOffs = NewBaseOffs;
+
// Check that this scale is legal.
if (!isLegalUse(F.AM, Offset, Offset, LU.Kind, LU.AccessTy, TLI))
continue;