// Check malloc prototype.
// FIXME: workaround for PR5130, this will be obsolete when a nobuiltin
// attribute will exist.
- const FunctionType *FTy = Callee->getFunctionType();
- if (FTy->getNumParams() != 1)
- return false;
- return FTy->getParamType(0)->isIntegerTy(32) ||
- FTy->getParamType(0)->isIntegerTy(64);
+ FunctionType *FTy = Callee->getFunctionType();
+ return FTy->getReturnType() == Type::getInt8PtrTy(FTy->getContext()) &&
+ FTy->getNumParams() == 1 &&
+ (FTy->getParamType(0)->isIntegerTy(32) ||
+ FTy->getParamType(0)->isIntegerTy(64));
}
/// extractMallocCall - Returns the corresponding CallInst if the instruction
return NULL;
// The size of the malloc's result type must be known to determine array size.
- const Type *T = getMallocAllocatedType(CI);
+ Type *T = getMallocAllocatedType(CI);
if (!T || !T->isSized() || !TD)
return NULL;
unsigned ElementSize = TD->getTypeAllocSize(T);
- if (const StructType *ST = dyn_cast<StructType>(T))
+ if (StructType *ST = dyn_cast<StructType>(T))
ElementSize = TD->getStructLayout(ST)->getSizeInBytes();
// If malloc call's arg can be determined to be a multiple of ElementSize,
/// 0: PointerType is the calls' return type.
/// 1: PointerType is the bitcast's result type.
/// >1: Unique PointerType cannot be determined, return NULL.
-const PointerType *llvm::getMallocType(const CallInst *CI) {
+PointerType *llvm::getMallocType(const CallInst *CI) {
assert(isMalloc(CI) && "getMallocType and not malloc call");
- const PointerType *MallocType = NULL;
+ PointerType *MallocType = NULL;
unsigned NumOfBitCastUses = 0;
// Determine if CallInst has a bitcast use.
/// 0: PointerType is the malloc calls' return type.
/// 1: PointerType is the bitcast's result type.
/// >1: Unique PointerType cannot be determined, return NULL.
-const Type *llvm::getMallocAllocatedType(const CallInst *CI) {
- const PointerType *PT = getMallocType(CI);
+Type *llvm::getMallocAllocatedType(const CallInst *CI) {
+ PointerType *PT = getMallocType(CI);
return PT ? PT->getElementType() : NULL;
}
return computeArraySize(CI, TD, LookThroughSExt);
}
+
+//===----------------------------------------------------------------------===//
+// calloc Call Utility Functions.
+//
+
+static bool isCallocCall(const CallInst *CI) {
+ if (!CI)
+ return false;
+
+ Function *Callee = CI->getCalledFunction();
+ if (Callee == 0 || !Callee->isDeclaration())
+ return false;
+ if (Callee->getName() != "calloc")
+ return false;
+
+ // Check malloc prototype.
+ // FIXME: workaround for PR5130, this will be obsolete when a nobuiltin
+ // attribute exists.
+ FunctionType *FTy = Callee->getFunctionType();
+ return FTy->getReturnType() == Type::getInt8PtrTy(FTy->getContext()) &&
+ FTy->getNumParams() == 2 &&
+ ((FTy->getParamType(0)->isIntegerTy(32) &&
+ FTy->getParamType(1)->isIntegerTy(32)) ||
+ (FTy->getParamType(0)->isIntegerTy(64) &&
+ FTy->getParamType(1)->isIntegerTy(64)));
+}
+
+/// extractCallocCall - Returns the corresponding CallInst if the instruction
+/// is a calloc call.
+const CallInst *llvm::extractCallocCall(const Value *I) {
+ const CallInst *CI = dyn_cast<CallInst>(I);
+ return isCallocCall(CI) ? CI : 0;
+}
+
+CallInst *llvm::extractCallocCall(Value *I) {
+ CallInst *CI = dyn_cast<CallInst>(I);
+ return isCallocCall(CI) ? CI : 0;
+}
+
+
//===----------------------------------------------------------------------===//
// free Call Utility Functions.
//
// Check free prototype.
// FIXME: workaround for PR5130, this will be obsolete when a nobuiltin
// attribute will exist.
- const FunctionType *FTy = Callee->getFunctionType();
+ FunctionType *FTy = Callee->getFunctionType();
if (!FTy->getReturnType()->isVoidTy())
return 0;
if (FTy->getNumParams() != 1)