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Add convenience functions for creating inbounds GEPs.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@78695 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2009-08-11 17:57:01 +00:00
parent 7cd0118c36
commit e2574d3215
7 changed files with 164 additions and 6 deletions
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11
include/llvm/Constants.h
View File

@ -723,7 +723,16 @@ public:
Constant* const *IdxList, unsigned NumIdx);
static Constant *getGetElementPtr(Constant *C,
Value* const *IdxList, unsigned NumIdx);
/// Create an "inbounds" getelementptr. See the documentation for the
/// "inbounds" flag in LangRef.html for details.
static Constant *getInBoundsGetElementPtr(Constant *C,
Constant* const *IdxList,
unsigned NumIdx);
static Constant *getInBoundsGetElementPtr(Constant *C,
Value* const *IdxList,
unsigned NumIdx);
static Constant *getExtractElement(Constant *Vec, Constant *Idx);
static Constant *getInsertElement(Constant *Vec, Constant *Elt,Constant *Idx);
static Constant *getShuffleVector(Constant *V1, Constant *V2, Constant *Mask);

38
include/llvm/Instructions.h
View File

@ -493,6 +493,44 @@ public:
return new(2) GetElementPtrInst(Ptr, Idx, NameStr, InsertAtEnd);
}
/// Create an "inbounds" getelementptr. See the documentation for the
/// "inbounds" flag in LangRef.html for details.
template<typename InputIterator>
static GetElementPtrInst *CreateInBounds(Value *Ptr, InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
GetElementPtrInst *GEP = Create(Ptr, IdxBegin, IdxEnd,
NameStr, InsertBefore);
cast<GEPOperator>(GEP)->setIsInBounds(true);
return GEP;
}
template<typename InputIterator>
static GetElementPtrInst *CreateInBounds(Value *Ptr,
InputIterator IdxBegin,
InputIterator IdxEnd,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
GetElementPtrInst *GEP = Create(Ptr, IdxBegin, IdxEnd,
NameStr, InsertAtEnd);
cast<GEPOperator>(GEP)->setIsInBounds(true);
return GEP;
}
static GetElementPtrInst *CreateInBounds(Value *Ptr, Value *Idx,
const Twine &NameStr = "",
Instruction *InsertBefore = 0) {
GetElementPtrInst *GEP = Create(Ptr, Idx, NameStr, InsertBefore);
cast<GEPOperator>(GEP)->setIsInBounds(true);
return GEP;
}
static GetElementPtrInst *CreateInBounds(Value *Ptr, Value *Idx,
const Twine &NameStr,
BasicBlock *InsertAtEnd) {
GetElementPtrInst *GEP = Create(Ptr, Idx, NameStr, InsertAtEnd);
cast<GEPOperator>(GEP)->setIsInBounds(true);
return GEP;
}
virtual GetElementPtrInst *clone(LLVMContext &Context) const;
/// Transparently provide more efficient getOperand methods.

9
include/llvm/Support/ConstantFolder.h
View File

@ -122,6 +122,15 @@ public:
return ConstantExpr::getGetElementPtr(C, IdxList, NumIdx);
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
unsigned NumIdx) const {
return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
unsigned NumIdx) const {
return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
}
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//

74
include/llvm/Support/IRBuilder.h
View File

@ -362,21 +362,43 @@ public:
if (Constant *PC = dyn_cast<Constant>(Ptr)) {
// Every index must be constant.
InputIterator i;
for (i = IdxBegin; i < IdxEnd; ++i) {
for (i = IdxBegin; i < IdxEnd; ++i)
if (!isa<Constant>(*i))
break;
}
if (i == IdxEnd)
return Folder.CreateGetElementPtr(PC, &IdxBegin[0], IdxEnd - IdxBegin);
}
return Insert(GetElementPtrInst::Create(Ptr, IdxBegin, IdxEnd), Name);
}
template<typename InputIterator>
Value *CreateInBoundsGEP(Value *Ptr, InputIterator IdxBegin, InputIterator IdxEnd,
const char *Name = "") {
if (Constant *PC = dyn_cast<Constant>(Ptr)) {
// Every index must be constant.
InputIterator i;
for (i = IdxBegin; i < IdxEnd; ++i)
if (!isa<Constant>(*i))
break;
if (i == IdxEnd)
return Folder.CreateInBoundsGetElementPtr(PC,
&IdxBegin[0],
IdxEnd - IdxBegin);
}
return Insert(GetElementPtrInst::CreateInBounds(Ptr, IdxBegin, IdxEnd),
Name);
}
Value *CreateGEP(Value *Ptr, Value *Idx, const char *Name = "") {
if (Constant *PC = dyn_cast<Constant>(Ptr))
if (Constant *IC = dyn_cast<Constant>(Idx))
return Folder.CreateGetElementPtr(PC, &IC, 1);
return Insert(GetElementPtrInst::Create(Ptr, Idx), Name);
}
Value *CreateInBoundsGEP(Value *Ptr, Value *Idx, const char *Name = "") {
if (Constant *PC = dyn_cast<Constant>(Ptr))
if (Constant *IC = dyn_cast<Constant>(Idx))
return Folder.CreateInBoundsGetElementPtr(PC, &IC, 1);
return Insert(GetElementPtrInst::CreateInBounds(Ptr, Idx), Name);
}
Value *CreateConstGEP1_32(Value *Ptr, unsigned Idx0, const char *Name = "") {
Value *Idx = ConstantInt::get(Type::Int32Ty, Idx0);
@ -385,6 +407,15 @@ public:
return Insert(GetElementPtrInst::Create(Ptr, &Idx, &Idx+1), Name);
}
Value *CreateConstInBoundsGEP1_32(Value *Ptr, unsigned Idx0,
const char *Name = "") {
Value *Idx = ConstantInt::get(Type::Int32Ty, Idx0);
if (Constant *PC = dyn_cast<Constant>(Ptr))
return Folder.CreateInBoundsGetElementPtr(PC, &Idx, 1);
return Insert(GetElementPtrInst::CreateInBounds(Ptr, &Idx, &Idx+1), Name);
}
Value *CreateConstGEP2_32(Value *Ptr, unsigned Idx0, unsigned Idx1,
const char *Name = "") {
Value *Idxs[] = {
@ -397,6 +428,18 @@ public:
return Insert(GetElementPtrInst::Create(Ptr, Idxs, Idxs+2), Name);
}
Value *CreateConstInBoundsGEP2_32(Value *Ptr, unsigned Idx0, unsigned Idx1,
const char *Name = "") {
Value *Idxs[] = {
ConstantInt::get(Type::Int32Ty, Idx0),
ConstantInt::get(Type::Int32Ty, Idx1)
};
if (Constant *PC = dyn_cast<Constant>(Ptr))
return Folder.CreateInBoundsGetElementPtr(PC, Idxs, 2);
return Insert(GetElementPtrInst::CreateInBounds(Ptr, Idxs, Idxs+2), Name);
}
Value *CreateConstGEP1_64(Value *Ptr, uint64_t Idx0, const char *Name = "") {
Value *Idx = ConstantInt::get(Type::Int64Ty, Idx0);
@ -405,7 +448,16 @@ public:
return Insert(GetElementPtrInst::Create(Ptr, &Idx, &Idx+1), Name);
}
Value *CreateConstGEP2_64(Value *Ptr, uint64_t Idx0, uint64_t Idx1,
Value *CreateConstInBoundsGEP1_64(Value *Ptr, uint64_t Idx0,
const char *Name = "") {
Value *Idx = ConstantInt::get(Type::Int64Ty, Idx0);
if (Constant *PC = dyn_cast<Constant>(Ptr))
return Folder.CreateInBoundsGetElementPtr(PC, &Idx, 1);
return Insert(GetElementPtrInst::CreateInBounds(Ptr, &Idx, &Idx+1), Name);
}
Value *CreateConstGEP2_64(Value *Ptr, uint64_t Idx0, uint64_t Idx1,
const char *Name = "") {
Value *Idxs[] = {
ConstantInt::get(Type::Int64Ty, Idx0),
@ -417,8 +469,20 @@ public:
return Insert(GetElementPtrInst::Create(Ptr, Idxs, Idxs+2), Name);
}
Value *CreateConstInBoundsGEP2_64(Value *Ptr, uint64_t Idx0, uint64_t Idx1,
const char *Name = "") {
Value *Idxs[] = {
ConstantInt::get(Type::Int64Ty, Idx0),
ConstantInt::get(Type::Int64Ty, Idx1)
};
if (Constant *PC = dyn_cast<Constant>(Ptr))
return Folder.CreateInBoundsGetElementPtr(PC, Idxs, 2);
return Insert(GetElementPtrInst::CreateInBounds(Ptr, Idxs, Idxs+2), Name);
}
Value *CreateStructGEP(Value *Ptr, unsigned Idx, const char *Name = "") {
return CreateConstGEP2_32(Ptr, 0, Idx, Name);
return CreateConstInBoundsGEP2_32(Ptr, 0, Idx, Name);
}
Value *CreateGlobalString(const char *Str = "", const char *Name = "") {
Constant *StrConstant = ConstantArray::get(Str, true);
@ -438,7 +502,7 @@ public:
Value *gv = CreateGlobalString(Str, Name);
Value *zero = ConstantInt::get(Type::Int32Ty, 0);
Value *Args[] = { zero, zero };
return CreateGEP(gv, Args, Args+2, Name);
return CreateInBoundsGEP(gv, Args, Args+2, Name);
}
//===--------------------------------------------------------------------===//
// Instruction creation methods: Cast/Conversion Operators

9
include/llvm/Support/NoFolder.h
View File

@ -126,6 +126,15 @@ public:
return GetElementPtrInst::Create(C, IdxList, IdxList+NumIdx);
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
unsigned NumIdx) const {
return ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx);
}
Value *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
unsigned NumIdx) const {
return GetElementPtrInst::CreateInBounds(C, IdxList, IdxList+NumIdx);
}
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//

9
include/llvm/Support/TargetFolder.h
View File

@ -138,6 +138,15 @@ public:
return Fold(ConstantExpr::getGetElementPtr(C, IdxList, NumIdx));
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Constant* const *IdxList,
unsigned NumIdx) const {
return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx));
}
Constant *CreateInBoundsGetElementPtr(Constant *C, Value* const *IdxList,
unsigned NumIdx) const {
return Fold(ConstantExpr::getInBoundsGetElementPtr(C, IdxList, NumIdx));
}
//===--------------------------------------------------------------------===//
// Cast/Conversion Operators
//===--------------------------------------------------------------------===//

20
lib/VMCore/Constants.cpp
View File

@ -1363,6 +1363,7 @@ Constant* ConstantExpr::getSizeOf(const Type* Ty) {
Constant* ConstantExpr::getAlignOf(const Type* Ty) {
// alignof is implemented as: (i64) gep ({i8,Ty}*)null, 0, 1
// Note that a non-inbounds gep is used, as null isn't within any object.
const Type *AligningTy = StructType::get(Ty->getContext(),
Type::Int8Ty, Ty, NULL);
Constant *NullPtr = Constant::getNullValue(AligningTy->getPointerTo());
@ -1438,11 +1439,30 @@ Constant *ConstantExpr::getGetElementPtr(Constant *C, Value* const *Idxs,
return getGetElementPtrTy(PointerType::get(Ty, As), C, Idxs, NumIdx);
}
Constant *ConstantExpr::getInBoundsGetElementPtr(Constant *C,
Value* const *Idxs,
unsigned NumIdx) {
// Get the result type of the getelementptr!
const Type *Ty =
GetElementPtrInst::getIndexedType(C->getType(), Idxs, Idxs+NumIdx);
assert(Ty && "GEP indices invalid!");
unsigned As = cast<PointerType>(C->getType())->getAddressSpace();
Constant *Result = getGetElementPtrTy(PointerType::get(Ty, As), C,
Idxs, NumIdx);
cast<GEPOperator>(Result)->setIsInBounds(true);
return Result;
}
Constant *ConstantExpr::getGetElementPtr(Constant *C, Constant* const *Idxs,
unsigned NumIdx) {
return getGetElementPtr(C, (Value* const *)Idxs, NumIdx);
}
Constant *ConstantExpr::getInBoundsGetElementPtr(Constant *C,
Constant* const *Idxs,
unsigned NumIdx) {
return getInBoundsGetElementPtr(C, (Value* const *)Idxs, NumIdx);
}
Constant *
ConstantExpr::getICmp(unsigned short pred, Constant* LHS, Constant* RHS) {