-/// getPointeeAlignment - Compute the minimum alignment of the value pointed
-/// to by the given pointer.
-static unsigned getPointeeAlignment(Value *V, const DataLayout &TD) {
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V))
- if (CE->getOpcode() == Instruction::BitCast ||
- (CE->getOpcode() == Instruction::GetElementPtr &&
- cast<GEPOperator>(CE)->hasAllZeroIndices()))
- return getPointeeAlignment(CE->getOperand(0), TD);
-
- if (GlobalVariable *GV = dyn_cast<GlobalVariable>(V))
- if (!GV->isDeclaration())
- return TD.getPreferredAlignment(GV);
-
- if (PointerType *PT = dyn_cast<PointerType>(V->getType()))
- if (PT->getElementType()->isSized())
- return TD.getABITypeAlignment(PT->getElementType());
-
- return 0;
-}
-