#include "llvm/Analysis/ValueTracking.h"
#include "llvm/Assembly/Writer.h"
#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLibraryInfo.h"
#include "llvm/Pass.h"
#include "llvm/PassManager.h"
#include "llvm/IntrinsicInst.h"
void visitCallSite(CallSite CS);
void visitMemoryReference(Instruction &I, Value *Ptr,
uint64_t Size, unsigned Align,
- const Type *Ty, unsigned Flags);
+ Type *Ty, unsigned Flags);
void visitCallInst(CallInst &I);
void visitInvokeInst(InvokeInst &I);
AliasAnalysis *AA;
DominatorTree *DT;
TargetData *TD;
+ TargetLibraryInfo *TLI;
std::string Messages;
raw_string_ostream MessagesStr;
virtual void getAnalysisUsage(AnalysisUsage &AU) const {
AU.setPreservesAll();
AU.addRequired<AliasAnalysis>();
+ AU.addRequired<TargetLibraryInfo>();
AU.addRequired<DominatorTree>();
}
virtual void print(raw_ostream &O, const Module *M) const {}
char Lint::ID = 0;
INITIALIZE_PASS_BEGIN(Lint, "lint", "Statically lint-checks LLVM IR",
false, true)
+INITIALIZE_PASS_DEPENDENCY(TargetLibraryInfo)
INITIALIZE_PASS_DEPENDENCY(DominatorTree)
INITIALIZE_AG_DEPENDENCY(AliasAnalysis)
INITIALIZE_PASS_END(Lint, "lint", "Statically lint-checks LLVM IR",
AA = &getAnalysis<AliasAnalysis>();
DT = &getAnalysis<DominatorTree>();
TD = getAnalysisIfAvailable<TargetData>();
+ TLI = &getAnalysis<TargetLibraryInfo>();
visit(F);
dbgs() << MessagesStr.str();
Messages.clear();
"Undefined behavior: Caller and callee calling convention differ",
&I);
- const FunctionType *FT = F->getFunctionType();
+ FunctionType *FT = F->getFunctionType();
unsigned NumActualArgs = unsigned(CS.arg_end()-CS.arg_begin());
Assert1(FT->isVarArg() ?
// Check that an sret argument points to valid memory.
if (Formal->hasStructRetAttr() && Actual->getType()->isPointerTy()) {
- const Type *Ty =
+ Type *Ty =
cast<PointerType>(Formal->getType())->getElementType();
visitMemoryReference(I, Actual, AA->getTypeStoreSize(Ty),
TD ? TD->getABITypeAlignment(Ty) : 0,
// TODO: Check readnone/readonly function attributes.
void Lint::visitMemoryReference(Instruction &I,
Value *Ptr, uint64_t Size, unsigned Align,
- const Type *Ty, unsigned Flags) {
+ Type *Ty, unsigned Flags) {
// If no memory is being referenced, it doesn't matter if the pointer
// is valid.
if (Size == 0)
if (Align != 0) {
unsigned BitWidth = TD->getTypeSizeInBits(Ptr->getType());
- APInt Mask = APInt::getAllOnesValue(BitWidth),
- KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
- ComputeMaskedBits(Ptr, Mask, KnownZero, KnownOne, TD);
+ APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
+ ComputeMaskedBits(Ptr, KnownZero, KnownOne, TD);
Assert1(!(KnownOne & APInt::getLowBitsSet(BitWidth, Log2_32(Align))),
"Undefined behavior: Memory reference address is misaligned", &I);
}
if (isa<UndefValue>(V)) return true;
unsigned BitWidth = cast<IntegerType>(V->getType())->getBitWidth();
- APInt Mask = APInt::getAllOnesValue(BitWidth),
- KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
- ComputeMaskedBits(V, Mask, KnownZero, KnownOne, TD);
+ APInt KnownZero(BitWidth, 0), KnownOne(BitWidth, 0);
+ ComputeMaskedBits(V, KnownZero, KnownOne, TD);
return KnownZero.isAllOnesValue();
}
// As a last resort, try SimplifyInstruction or constant folding.
if (Instruction *Inst = dyn_cast<Instruction>(V)) {
- if (Value *W = SimplifyInstruction(Inst, TD, DT))
+ if (Value *W = SimplifyInstruction(Inst, TD, TLI, DT))
return findValueImpl(W, OffsetOk, Visited);
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(V)) {
- if (Value *W = ConstantFoldConstantExpression(CE, TD))
+ if (Value *W = ConstantFoldConstantExpression(CE, TD, TLI))
if (W != V)
return findValueImpl(W, OffsetOk, Visited);
}