//
// The LLVM Compiler Infrastructure
//
-// This file was developed by the LLVM research group and is distributed under
-// the University of Illinois Open Source License. See LICENSE.TXT for details.
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
//
//===----------------------------------------------------------------------===//
-#include "ValueMapper.h"
+#include "llvm/Transforms/Utils/ValueMapper.h"
#include "llvm/Constants.h"
#include "llvm/GlobalValue.h"
#include "llvm/Instruction.h"
using namespace llvm;
-Value *llvm::MapValue(const Value *V, std::map<const Value*, Value*> &VM) {
+Value *llvm::MapValue(const Value *V, ValueMapTy &VM) {
Value *&VMSlot = VM[V];
if (VMSlot) return VMSlot; // Does it exist in the map yet?
+
+ // NOTE: VMSlot can be invalidated by any reference to VM, which can grow the
+ // DenseMap. This includes any recursive calls to MapValue.
// Global values do not need to be seeded into the ValueMap if they are using
// the identity mapping.
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)));
- return VMSlot = ConstantArray::get(CA->getType(), Values);
+ Values.push_back(cast<Constant>(MapValue(*i, VM)));
+ return VM[V] = ConstantArray::get(CA->getType(), Values);
}
}
- return VMSlot = C;
+ 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)));
- return VMSlot = ConstantStruct::get(CS->getType(), Values);
+ Values.push_back(cast<Constant>(MapValue(*i, VM)));
+ return VM[V] = ConstantStruct::get(CS->getType(), Values);
}
}
- return VMSlot = C;
+ return VM[V] = C;
} 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)));
- return VMSlot = CE->getWithOperands(Ops);
- } else if (ConstantPacked *CP = dyn_cast<ConstantPacked>(C)) {
- for (unsigned i = 0, e = CP->getNumOperands(); i != e; ++i) {
- Value *MV = MapValue(CP->getOperand(i), VM);
- if (MV != CP->getOperand(i)) {
- // This packed value must contain a reference to a global, make a new
- // packed constant and return it.
+ 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 (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)));
- return VMSlot = ConstantPacked::get(Values);
+ Values.push_back(cast<Constant>(MapValue(*i, VM)));
+ return VM[V] = ConstantVector::get(Values);
}
}
- return VMSlot = C;
+ return VM[V] = C;
} else {
assert(0 && "Unknown type of constant!");
/// RemapInstruction - Convert the instruction operands from referencing the
/// current values into those specified by ValueMap.
///
-void llvm::RemapInstruction(Instruction *I,
- std::map<const Value *, Value*> &ValueMap) {
- for (unsigned op = 0, E = I->getNumOperands(); op != E; ++op) {
- const Value *Op = I->getOperand(op);
- Value *V = MapValue(Op, ValueMap);
+void llvm::RemapInstruction(Instruction *I, ValueMapTy &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;
}
}
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