/// getDest - This is just like getRawDest, but it strips off any cast
/// instructions that feed it, giving the original input. The returned
/// value is guaranteed to be a pointer.
- Value *getDest() const { return StripPointerCasts(getRawDest()); }
+ Value *getDest() const { return getRawDest()->stripPointerCasts(); }
/// set* - Set the specified arguments of the instruction.
///
/// getSource - This is just like getRawSource, but it strips off any cast
/// instructions that feed it, giving the original input. The returned
/// value is guaranteed to be a pointer.
- Value *getSource() const { return StripPointerCasts(getRawSource()); }
+ Value *getSource() const { return getRawSource()->stripPointerCasts(); }
void setSource(Value *Ptr) {
/// getSource - This is just like getRawSource, but it strips off any cast
/// instructions that feed it, giving the original input. The returned
/// value is guaranteed to be a pointer.
- Value *getSource() const { return StripPointerCasts(getRawSource()); }
+ Value *getSource() const { return getRawSource()->stripPointerCasts(); }
void setSource(Value *Ptr) {
assert(getRawSource()->getType() == Ptr->getType() &&
/// getRawType - This should only be used to implement the vmcore library.
///
const Type *getRawType() const { return Ty.getRawType(); }
+
+ /// stripPointerCasts - This method strips off any unneeded pointer
+ /// casts from the specified value, returning the original uncasted value.
+ /// Note that the returned value is guaranteed to have pointer type.
+ Value *stripPointerCasts();
};
inline std::ostream &operator<<(std::ostream &OS, const Value &V) {
return isa<GlobalVariable>(Val) || isa<Function>(Val) || isa<GlobalAlias>(Val);
}
-/// StripPointerCasts - This function strips off any unneeded pointer
-/// casts from the specified value, returning the original uncasted value.
-/// Note that the returned value is guaranteed to have pointer type.
-Value *StripPointerCasts(Value *Ptr);
-
} // End llvm namespace
#endif
for (; !CouldBecomeSafePoint(IP); ++IP)
if (StoreInst *SI = dyn_cast<StoreInst>(IP))
if (AllocaInst *AI =
- dyn_cast<AllocaInst>(StripPointerCasts(SI->getOperand(1))))
+ dyn_cast<AllocaInst>(SI->getOperand(1)->stripPointerCasts()))
InitedRoots.insert(AI);
// Add root initializers.
// Initialize the GC root, but do not delete the intrinsic. The
// backend needs the intrinsic to flag the stack slot.
Roots.push_back(cast<AllocaInst>(
- StripPointerCasts(CI->getOperand(1))));
+ CI->getOperand(1)->stripPointerCasts()));
}
break;
default:
/// ExtractTypeInfo - Returns the type info, possibly bitcast, encoded in V.
static GlobalVariable *ExtractTypeInfo (Value *V) {
- V = StripPointerCasts(V);
+ V = V->stripPointerCasts();
GlobalVariable *GV = dyn_cast<GlobalVariable>(V);
assert ((GV || isa<ConstantPointerNull>(V)) &&
"TypeInfo must be a global variable or NULL");
return 0;
case Intrinsic::init_trampoline: {
- const Function *F = cast<Function>(StripPointerCasts(I.getOperand(2)));
+ const Function *F = cast<Function>(I.getOperand(2)->stripPointerCasts());
SDOperand Ops[6];
Ops[0] = getRoot();
if (Function *F = CI->getCalledFunction())
if (F->getIntrinsicID() == Intrinsic::gcroot) {
std::pair<CallInst*,AllocaInst*> Pair = std::make_pair(
- CI, cast<AllocaInst>(StripPointerCasts(CI->getOperand(1))));
+ CI, cast<AllocaInst>(CI->getOperand(1)->stripPointerCasts()));
if (IsNullValue(CI->getOperand(2)))
Roots.push_back(Pair);
else
Constant *SInit =
cast<Constant>(RemapOperand(SGV->getInitializer(), ValueMap));
- GlobalVariable *DGV = cast<GlobalVariable>(StripPointerCasts(ValueMap[SGV]));
+ GlobalVariable *DGV =
+ cast<GlobalVariable>(ValueMap[SGV]->stripPointerCasts());
if (DGV->hasInitializer()) {
if (SGV->hasExternalLinkage()) {
if (DGV->getInitializer() != SInit)
IntrinsicInst *Tramp =
cast<IntrinsicInst>(cast<BitCastInst>(Callee)->getOperand(0));
- Function *NestF = cast<Function>(StripPointerCasts(Tramp->getOperand(2)));
+ Function *NestF = cast<Function>(Tramp->getOperand(2)->stripPointerCasts());
const PointerType *NestFPTy = cast<PointerType>(NestF->getType());
const FunctionType *NestFTy = cast<FunctionType>(NestFPTy->getElementType());
uncheckedReplaceAllUsesWith(New);
}
+Value *Value::stripPointerCasts() {
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(this)) {
+ if (CE->getOpcode() == Instruction::BitCast) {
+ if (isa<PointerType>(CE->getOperand(0)->getType()))
+ return CE->getOperand(0)->stripPointerCasts();
+ } else if (CE->getOpcode() == Instruction::GetElementPtr) {
+ for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
+ if (!CE->getOperand(i)->isNullValue())
+ return this;
+ return CE->getOperand(0)->stripPointerCasts();
+ }
+ return this;
+ }
+
+ if (BitCastInst *CI = dyn_cast<BitCastInst>(this)) {
+ if (isa<PointerType>(CI->getOperand(0)->getType()))
+ return CI->getOperand(0)->stripPointerCasts();
+ } else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(this)) {
+ if (GEP->hasAllZeroIndices())
+ return GEP->getOperand(0)->stripPointerCasts();
+ }
+ return this;
+}
+
//===----------------------------------------------------------------------===//
// User Class
//===----------------------------------------------------------------------===//
setOperand(i, To); // Fix it now...
}
}
-
-//===----------------------------------------------------------------------===//
-// Utility functions
-//===----------------------------------------------------------------------===//
-
-Value *llvm::StripPointerCasts(Value *Ptr) {
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(Ptr)) {
- if (CE->getOpcode() == Instruction::BitCast) {
- if (isa<PointerType>(CE->getOperand(0)->getType()))
- return StripPointerCasts(CE->getOperand(0));
- } else if (CE->getOpcode() == Instruction::GetElementPtr) {
- for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
- if (!CE->getOperand(i)->isNullValue())
- return Ptr;
- return StripPointerCasts(CE->getOperand(0));
- }
- return Ptr;
- }
-
- if (BitCastInst *CI = dyn_cast<BitCastInst>(Ptr)) {
- if (isa<PointerType>(CI->getOperand(0)->getType()))
- return StripPointerCasts(CI->getOperand(0));
- } else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(Ptr)) {
- if (GEP->hasAllZeroIndices())
- return StripPointerCasts(GEP->getOperand(0));
- }
- return Ptr;
-}
"Intrinsic parameter #1 is not i8**.", &CI);
Assert1(CI.getOperand(2)->getType() == PtrTy,
"Intrinsic parameter #2 is not i8*.", &CI);
- Assert1(isa<AllocaInst>(StripPointerCasts(CI.getOperand(1))),
+ Assert1(isa<AllocaInst>(CI.getOperand(1)->stripPointerCasts()),
"llvm.gcroot parameter #1 must be an alloca.", &CI);
Assert1(isa<Constant>(CI.getOperand(2)),
"llvm.gcroot parameter #2 must be a constant.", &CI);
&CI);
} break;
case Intrinsic::init_trampoline:
- Assert1(isa<Function>(StripPointerCasts(CI.getOperand(2))),
+ Assert1(isa<Function>(CI.getOperand(2)->stripPointerCasts()),
"llvm.init_trampoline parameter #2 must resolve to a function.",
&CI);
break;