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rewrite operand loops to use iterators

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51789 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Gabor Greif 2008-05-30 21:24:22 +00:00
parent 856e106d20
commit ba2c487424
1 changed files with 26 additions and 24 deletions
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50
lib/Transforms/Utils/ValueMapper.cpp
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@ -36,38 +36,40 @@ Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
isa<UndefValue>(C))
return VMSlot = C; // Primitive constants map directly
else if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) {
for (unsigned i = 0, e = CA->getNumOperands(); i != e; ++i) {
Value *MV = MapValue(CA->getOperand(i), VM);
if (MV != CA->getOperand(i)) {
for (User::op_iterator b = CA->op_begin(), i = b, e = CA->op_end();
i != e; ++i) {
Value *MV = MapValue(*i, VM);
if (MV != *i) {
// This array must contain a reference to a global, make a new array
// and return it.
//
std::vector<Constant*> Values;
Values.reserve(CA->getNumOperands());
for (unsigned j = 0; j != i; ++j)
Values.push_back(CA->getOperand(j));
for (User::op_iterator j = b; j != i; ++j)
Values.push_back(cast<Constant>(*j));
Values.push_back(cast<Constant>(MV));
for (++i; i != e; ++i)
Values.push_back(cast<Constant>(MapValue(CA->getOperand(i), VM)));
Values.push_back(cast<Constant>(MapValue(*i, VM)));
return VM[V] = ConstantArray::get(CA->getType(), Values);
}
}
return VM[V] = C;
} else if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) {
for (unsigned i = 0, e = CS->getNumOperands(); i != e; ++i) {
Value *MV = MapValue(CS->getOperand(i), VM);
if (MV != CS->getOperand(i)) {
for (User::op_iterator b = CS->op_begin(), i = b, e = CS->op_end();
i != e; ++i) {
Value *MV = MapValue(*i, VM);
if (MV != *i) {
// This struct must contain a reference to a global, make a new struct
// and return it.
//
std::vector<Constant*> Values;
Values.reserve(CS->getNumOperands());
for (unsigned j = 0; j != i; ++j)
Values.push_back(CS->getOperand(j));
for (User::op_iterator j = b; j != i; ++j)
Values.push_back(cast<Constant>(*j));
Values.push_back(cast<Constant>(MV));
for (++i; i != e; ++i)
Values.push_back(cast<Constant>(MapValue(CS->getOperand(i), VM)));
Values.push_back(cast<Constant>(MapValue(*i, VM)));
return VM[V] = ConstantStruct::get(CS->getType(), Values);
}
}
@ -75,23 +77,24 @@ Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
} else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
std::vector<Constant*> Ops;
for (unsigned i = 0, e = CE->getNumOperands(); i != e; ++i)
Ops.push_back(cast<Constant>(MapValue(CE->getOperand(i), VM)));
for (User::op_iterator i = CE->op_begin(), e = CE->op_end(); i != e; ++i)
Ops.push_back(cast<Constant>(MapValue(*i, VM)));
return VM[V] = CE->getWithOperands(Ops);
} else if (ConstantVector *CP = dyn_cast<ConstantVector>(C)) {
for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i) {
Value *MV = MapValue(CP->getOperand(i), VM);
if (MV != CP->getOperand(i)) {
for (User::op_iterator b = CP->op_begin(), i = b, e = CP->op_end();
i != e; ++i) {
Value *MV = MapValue(*i, VM);
if (MV != *i) {
// This vector value must contain a reference to a global, make a new
// vector constant and return it.
//
std::vector<Constant*> Values;
Values.reserve(CP->getNumOperands());
for (unsigned j = 0; j != i; ++j)
Values.push_back(CP->getOperand(j));
for (User::op_iterator j = b; j != i; ++j)
Values.push_back(cast<Constant>(*j));
Values.push_back(cast<Constant>(MV));
for (++i; i != e; ++i)
Values.push_back(cast<Constant>(MapValue(CP->getOperand(i), VM)));
Values.push_back(cast<Constant>(MapValue(*i, VM)));
return VM[V] = ConstantVector::get(Values);
}
}
@ -109,10 +112,9 @@ Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
/// current values into those specified by ValueMap.
///
void llvm::RemapInstruction(Instruction *I, ValueMapTy &ValueMap) {
for (unsigned op = 0, E = I->getNumOperands(); op != E; ++op) {
const Value *Op = I->getOperand(op);
Value *V = MapValue(Op, ValueMap);
for (User::op_iterator op = I->op_begin(), E = I->op_end(); op != E; ++op) {
Value *V = MapValue(*op, ValueMap);
assert(V && "Referenced value not in value map!");
I->setOperand(op, V);
*op = V;
}
}