#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallPtrSet.h"
+#include "llvm/IRBuilder.h"
+#include "llvm/InstVisitor.h"
#include "llvm/Operator.h"
#include "llvm/Support/DataTypes.h"
-#include "llvm/Support/InstVisitor.h"
-#include "llvm/Support/IRBuilder.h"
#include "llvm/Support/TargetFolder.h"
+#include "llvm/Support/ValueHandle.h"
namespace llvm {
class CallInst;
class PointerType;
-class TargetData;
+class DataLayout;
+class TargetLibraryInfo;
class Type;
class Value;
-/// \brief Tests if a value is a call to a library function that allocates or
-/// reallocates memory (either malloc, calloc, realloc, or strdup like).
-bool isAllocationFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a library function that
+/// allocates or reallocates memory (either malloc, calloc, realloc, or strdup
+/// like).
+bool isAllocationFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
-/// \brief Tests if a value is a call to a function that returns a NoAlias
-/// pointer (including malloc/calloc/strdup-like functions).
-bool isNoAliasFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a function that returns a
+/// NoAlias pointer (including malloc/calloc/realloc/strdup-like functions).
+bool isNoAliasFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
-/// \brief Tests if a value is a call to a library function that allocates
-/// uninitialized memory (such as malloc).
-bool isMallocLikeFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a library function that
+/// allocates uninitialized memory (such as malloc).
+bool isMallocLikeFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
-/// \brief Tests if a value is a call to a library function that allocates
-/// zero-filled memory (such as calloc).
-bool isCallocLikeFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a library function that
+/// allocates zero-filled memory (such as calloc).
+bool isCallocLikeFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
-/// \brief Tests if a value is a call to a library function that allocates
-/// memory (either malloc, calloc, or strdup like).
-bool isAllocLikeFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a library function that
+/// allocates memory (either malloc, calloc, or strdup like).
+bool isAllocLikeFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
-/// \brief Tests if a value is a call to a library function that reallocates
-/// memory (such as realloc).
-bool isReallocLikeFn(const Value *V, bool LookThroughBitCast = false);
+/// \brief Tests if a value is a call or invoke to a library function that
+/// reallocates memory (such as realloc).
+bool isReallocLikeFn(const Value *V, const TargetLibraryInfo *TLI,
+ bool LookThroughBitCast = false);
//===----------------------------------------------------------------------===//
/// extractMallocCall - Returns the corresponding CallInst if the instruction
/// is a malloc call. Since CallInst::CreateMalloc() only creates calls, we
/// ignore InvokeInst here.
-const CallInst *extractMallocCall(const Value *I);
-static inline CallInst *extractMallocCall(Value *I) {
- return const_cast<CallInst*>(extractMallocCall((const Value*)I));
-}
-
-/// extractMallocCallFromBitCast - Returns the corresponding CallInst if the
-/// instruction is a bitcast of the result of a malloc call.
-const CallInst *extractMallocCallFromBitCast(const Value *I);
-static inline CallInst *extractMallocCallFromBitCast(Value *I) {
- return const_cast<CallInst*>(extractMallocCallFromBitCast((const Value*)I));
+const CallInst *extractMallocCall(const Value *I, const TargetLibraryInfo *TLI);
+static inline CallInst *extractMallocCall(Value *I,
+ const TargetLibraryInfo *TLI) {
+ return const_cast<CallInst*>(extractMallocCall((const Value*)I, TLI));
}
/// isArrayMalloc - Returns the corresponding CallInst if the instruction
/// is a call to malloc whose array size can be determined and the array size
/// is not constant 1. Otherwise, return NULL.
-const CallInst *isArrayMalloc(const Value *I, const TargetData *TD);
+const CallInst *isArrayMalloc(const Value *I, const DataLayout *TD,
+ const TargetLibraryInfo *TLI);
/// getMallocType - Returns the PointerType resulting from the malloc call.
/// The PointerType depends on the number of bitcast uses of the malloc call:
/// 0: PointerType is the malloc calls' return type.
/// 1: PointerType is the bitcast's result type.
/// >1: Unique PointerType cannot be determined, return NULL.
-PointerType *getMallocType(const CallInst *CI);
+PointerType *getMallocType(const CallInst *CI, const TargetLibraryInfo *TLI);
/// getMallocAllocatedType - Returns the Type allocated by malloc call.
/// The Type depends on the number of bitcast uses of the malloc call:
/// 0: PointerType is the malloc calls' return type.
/// 1: PointerType is the bitcast's result type.
/// >1: Unique PointerType cannot be determined, return NULL.
-Type *getMallocAllocatedType(const CallInst *CI);
+Type *getMallocAllocatedType(const CallInst *CI, const TargetLibraryInfo *TLI);
/// getMallocArraySize - Returns the array size of a malloc call. If the
/// argument passed to malloc is a multiple of the size of the malloced type,
/// then return that multiple. For non-array mallocs, the multiple is
/// constant 1. Otherwise, return NULL for mallocs whose array size cannot be
/// determined.
-Value *getMallocArraySize(CallInst *CI, const TargetData *TD,
+Value *getMallocArraySize(CallInst *CI, const DataLayout *TD,
+ const TargetLibraryInfo *TLI,
bool LookThroughSExt = false);
/// extractCallocCall - Returns the corresponding CallInst if the instruction
/// is a calloc call.
-const CallInst *extractCallocCall(const Value *I);
-static inline CallInst *extractCallocCall(Value *I) {
- return const_cast<CallInst*>(extractCallocCall((const Value*)I));
+const CallInst *extractCallocCall(const Value *I, const TargetLibraryInfo *TLI);
+static inline CallInst *extractCallocCall(Value *I,
+ const TargetLibraryInfo *TLI) {
+ return const_cast<CallInst*>(extractCallocCall((const Value*)I, TLI));
}
//
/// isFreeCall - Returns non-null if the value is a call to the builtin free()
-const CallInst *isFreeCall(const Value *I);
+const CallInst *isFreeCall(const Value *I, const TargetLibraryInfo *TLI);
-static inline CallInst *isFreeCall(Value *I) {
- return const_cast<CallInst*>(isFreeCall((const Value*)I));
+static inline CallInst *isFreeCall(Value *I, const TargetLibraryInfo *TLI) {
+ return const_cast<CallInst*>(isFreeCall((const Value*)I, TLI));
}
/// object size in Size if successful, and false otherwise.
/// If RoundToAlign is true, then Size is rounded up to the aligment of allocas,
/// byval arguments, and global variables.
-bool getObjectSize(const Value *Ptr, uint64_t &Size, const TargetData *TD,
- bool RoundToAlign = false);
+bool getObjectSize(const Value *Ptr, uint64_t &Size, const DataLayout *TD,
+ const TargetLibraryInfo *TLI, bool RoundToAlign = false);
class ObjectSizeOffsetVisitor
: public InstVisitor<ObjectSizeOffsetVisitor, SizeOffsetType> {
- const TargetData *TD;
+ const DataLayout *TD;
+ const TargetLibraryInfo *TLI;
bool RoundToAlign;
unsigned IntTyBits;
APInt Zero;
+ SmallPtrSet<Instruction *, 8> SeenInsts;
APInt align(APInt Size, uint64_t Align);
}
public:
- ObjectSizeOffsetVisitor(const TargetData *TD, LLVMContext &Context,
- bool RoundToAlign = false);
+ ObjectSizeOffsetVisitor(const DataLayout *TD, const TargetLibraryInfo *TLI,
+ LLVMContext &Context, bool RoundToAlign = false);
SizeOffsetType compute(Value *V);
SizeOffsetType visitArgument(Argument &A);
SizeOffsetType visitCallSite(CallSite CS);
SizeOffsetType visitConstantPointerNull(ConstantPointerNull&);
+ SizeOffsetType visitExtractElementInst(ExtractElementInst &I);
SizeOffsetType visitExtractValueInst(ExtractValueInst &I);
SizeOffsetType visitGEPOperator(GEPOperator &GEP);
SizeOffsetType visitGlobalVariable(GlobalVariable &GV);
};
typedef std::pair<Value*, Value*> SizeOffsetEvalType;
-typedef IRBuilder<true, TargetFolder> BuilderTy;
-typedef DenseMap<const Value*, SizeOffsetEvalType> CacheMapTy;
-typedef SmallPtrSet<const Value*, 8> PtrSetTy;
/// \brief Evaluate the size and offset of an object ponted by a Value*.
class ObjectSizeOffsetEvaluator
: public InstVisitor<ObjectSizeOffsetEvaluator, SizeOffsetEvalType> {
- const TargetData *TD;
+ typedef IRBuilder<true, TargetFolder> BuilderTy;
+ typedef std::pair<WeakVH, WeakVH> WeakEvalType;
+ typedef DenseMap<const Value*, WeakEvalType> CacheMapTy;
+ typedef SmallPtrSet<const Value*, 8> PtrSetTy;
+
+ const DataLayout *TD;
+ const TargetLibraryInfo *TLI;
LLVMContext &Context;
BuilderTy Builder;
- ObjectSizeOffsetVisitor Visitor;
IntegerType *IntTy;
Value *Zero;
CacheMapTy CacheMap;
SizeOffsetEvalType compute_(Value *V);
public:
- ObjectSizeOffsetEvaluator(const TargetData *TD, LLVMContext &Context);
+ ObjectSizeOffsetEvaluator(const DataLayout *TD, const TargetLibraryInfo *TLI,
+ LLVMContext &Context);
SizeOffsetEvalType compute(Value *V);
- bool knownSize(SizeOffsetEvalType &SizeOffset) {
+ bool knownSize(SizeOffsetEvalType SizeOffset) {
return SizeOffset.first;
}
- bool knownOffset(SizeOffsetEvalType &SizeOffset) {
+ bool knownOffset(SizeOffsetEvalType SizeOffset) {
return SizeOffset.second;
}
- bool anyKnown(SizeOffsetEvalType &SizeOffset) {
+ bool anyKnown(SizeOffsetEvalType SizeOffset) {
return knownSize(SizeOffset) || knownOffset(SizeOffset);
}
- bool bothKnown(SizeOffsetEvalType &SizeOffset) {
+ bool bothKnown(SizeOffsetEvalType SizeOffset) {
return knownSize(SizeOffset) && knownOffset(SizeOffset);
}
SizeOffsetEvalType visitAllocaInst(AllocaInst &I);
SizeOffsetEvalType visitCallSite(CallSite CS);
+ SizeOffsetEvalType visitExtractElementInst(ExtractElementInst &I);
+ SizeOffsetEvalType visitExtractValueInst(ExtractValueInst &I);
SizeOffsetEvalType visitGEPOperator(GEPOperator &GEP);
SizeOffsetEvalType visitIntToPtrInst(IntToPtrInst&);
SizeOffsetEvalType visitLoadInst(LoadInst &I);
projects / oota-llvm.git / blobdiff