BaseOffset += DL->getStructLayout(STy)->getElementOffset(Field);
}
}
+
+ unsigned AddrSpace = GEP->getPointerAddressSpace();
return TTI->isLegalAddressingMode(GEP->getType()->getElementType(), BaseGV,
- BaseOffset, HasBaseReg, Scale);
+ BaseOffset, HasBaseReg, Scale, AddrSpace);
}
// Returns whether (Base + Index * Stride) can be folded to an addressing mode.
// trivially dead.
RecursivelyDeleteTriviallyDeadInstructions(Bump);
} else {
+ // It's tempting to preserve nsw on Bump and/or Reduced. However, it's
+ // usually unsound, e.g.,
+ //
+ // X = (-2 +nsw 1) *nsw INT_MAX
+ // Y = (-2 +nsw 3) *nsw INT_MAX
+ // =>
+ // Y = X + 2 * INT_MAX
+ //
+ // Neither + and * in the resultant expression are nsw.
Reduced = Builder.CreateAdd(Basis.Ins, Bump);
}
break;