///
static Constant *getSizeOf(const Type *Ty);
+ /// getPtrPtrFromArrayPtr constant expr - given a pointer to a constant array,
+ /// return a pointer to a pointer of the array element type.
+ static Constant *getPtrPtrFromArrayPtr(Constant *C);
+
/// ConstantExpr::get - Return a binary or shift operator constant expression,
/// folding if possible.
///
static Constant *getGetElementPtr(Constant *C,
Value* const *IdxList, unsigned NumIdx);
+ // FIXME: Remove these.
+ static Constant *getGetElementPtr(Constant *C,
+ const std::vector<Constant*> &IdxList) {
+ return getGetElementPtr(C, &IdxList[0], IdxList.size());
+ }
+ static Constant *getGetElementPtr(Constant *C,
+ const std::vector<Value*> &IdxList) {
+ return getGetElementPtr(C, &IdxList[0], IdxList.size());
+ }
+
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);
#include "llvm/Support/Debug.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/MathExtras.h"
-#include "llvm/ADT/SmallVector.h"
#include <algorithm>
#include <map>
using namespace llvm;
Op2 = (OpNo == 2) ? Op : getOperand(2);
return ConstantExpr::getShuffleVector(Op0, Op1, Op2);
case Instruction::GetElementPtr: {
- SmallVector<Constant*, 8> Ops;
- Ops.resize(getNumOperands());
+ std::vector<Constant*> Ops;
for (unsigned i = 1, e = getNumOperands(); i != e; ++i)
- Ops[i] = getOperand(i);
+ Ops.push_back(getOperand(i));
if (OpNo == 0)
- return ConstantExpr::getGetElementPtr(Op, &Ops[0], Ops.size());
+ return ConstantExpr::getGetElementPtr(Op, Ops);
Ops[OpNo-1] = Op;
- return ConstantExpr::getGetElementPtr(getOperand(0), &Ops[0], Ops.size());
+ return ConstantExpr::getGetElementPtr(getOperand(0), Ops);
}
default:
assert(getNumOperands() == 2 && "Must be binary operator?");
return ConstantExpr::getExtractElement(Ops[0], Ops[1]);
case Instruction::ShuffleVector:
return ConstantExpr::getShuffleVector(Ops[0], Ops[1], Ops[2]);
- case Instruction::GetElementPtr:
- return ConstantExpr::getGetElementPtr(Ops[0], &Ops[1], Ops.size()-1);
+ case Instruction::GetElementPtr: {
+ std::vector<Constant*> ActualOps(Ops.begin()+1, Ops.end());
+ return ConstantExpr::getGetElementPtr(Ops[0], ActualOps);
+ }
case Instruction::ICmp:
case Instruction::FCmp:
return ConstantExpr::getCompare(getPredicate(), Ops[0], Ops[1]);
Constant *ConstantExpr::getSizeOf(const Type *Ty) {
// sizeof is implemented as: (ulong) gep (Ty*)null, 1
- Constant *GEPIdx = ConstantInt::get(Type::Int32Ty, 1);
- Constant *GEP =
- getGetElementPtr(getNullValue(PointerType::get(Ty)), &GEPIdx, 1);
- return getCast(Instruction::PtrToInt, GEP, Type::Int64Ty);
+ return getCast(Instruction::PtrToInt, getGetElementPtr(getNullValue(
+ PointerType::get(Ty)), std::vector<Constant*>(1,
+ ConstantInt::get(Type::Int32Ty, 1))), Type::Int64Ty);
+}
+
+Constant *ConstantExpr::getPtrPtrFromArrayPtr(Constant *C) {
+ // pointer from array is implemented as: getelementptr arr ptr, 0, 0
+ static std::vector<Constant*> Indices(2, ConstantInt::get(Type::Int32Ty, 0));
+
+ return ConstantExpr::getGetElementPtr(C, Indices);
}
Constant *ConstantExpr::getTy(const Type *ReqTy, unsigned Opcode,
Constant *Replacement = 0;
if (getOpcode() == Instruction::GetElementPtr) {
- SmallVector<Constant*, 8> Indices;
+ std::vector<Constant*> Indices;
Constant *Pointer = getOperand(0);
Indices.reserve(getNumOperands()-1);
if (Pointer == From) Pointer = To;
if (Val == From) Val = To;
Indices.push_back(Val);
}
- Replacement = ConstantExpr::getGetElementPtr(Pointer,
- &Indices[0], Indices.size());
+ Replacement = ConstantExpr::getGetElementPtr(Pointer, Indices);
} else if (isCast()) {
assert(getOperand(0) == From && "Cast only has one use!");
Replacement = ConstantExpr::getCast(getOpcode(), To, getType());