//
//===----------------------------------------------------------------------===//
-#include "llvm/Transforms/Utils/ValueMapper.h"
-#include "llvm/BasicBlock.h"
+#include "ValueMapper.h"
+#include "llvm/Type.h"
#include "llvm/Constants.h"
-#include "llvm/GlobalValue.h"
-#include "llvm/Instruction.h"
-#include "llvm/LLVMContext.h"
-#include "llvm/MDNode.h"
+#include "llvm/Function.h"
+#include "llvm/Metadata.h"
#include "llvm/ADT/SmallVector.h"
using namespace llvm;
-Value *llvm::MapValue(const Value *V, ValueMapTy &VM, LLVMContext *Context) {
+Value *llvm::MapValue(const Value *V, ValueToValueMapTy &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.
- if (isa<GlobalValue>(V) || isa<InlineAsm>(V))
+ // Global values and non-function-local metadata do not need to be seeded into
+ // the ValueMap if they are using the identity mapping.
+ if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V) ||
+ (isa<MDNode>(V) && !cast<MDNode>(V)->isFunctionLocal()))
return VMSlot = const_cast<Value*>(V);
- if (Constant *C = const_cast<Constant*>(dyn_cast<Constant>(V))) {
- if (isa<ConstantInt>(C) || isa<ConstantFP>(C) ||
- isa<ConstantPointerNull>(C) || isa<ConstantAggregateZero>(C) ||
- isa<UndefValue>(C) || isa<MDString>(C))
- return VMSlot = C; // Primitive constants map directly
- else if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) {
- for (User::op_iterator b = CA->op_begin(), i = b, e = CA->op_end();
- i != e; ++i) {
- Value *MV = MapValue(*i, VM, Context);
- 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 (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(*i, VM, Context)));
- return VM[V] = Context->getConstantArray(CA->getType(), Values);
- }
- }
- return VM[V] = C;
+ if (const MDNode *MD = dyn_cast<MDNode>(V)) {
+ SmallVector<Value*, 4> Elts;
+ for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i)
+ Elts.push_back(MD->getOperand(i) ? MapValue(MD->getOperand(i), VM) : 0);
+ return VM[V] = MDNode::get(V->getContext(), Elts.data(), Elts.size());
+ }
- } else if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) {
- for (User::op_iterator b = CS->op_begin(), i = b, e = CS->op_end();
- i != e; ++i) {
- Value *MV = MapValue(*i, VM, Context);
- 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 (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(*i, VM, Context)));
- return VM[V] = Context->getConstantStruct(CS->getType(), Values);
- }
+ Constant *C = const_cast<Constant*>(dyn_cast<Constant>(V));
+ if (C == 0) return 0;
+
+ if (isa<ConstantInt>(C) || isa<ConstantFP>(C) ||
+ isa<ConstantPointerNull>(C) || isa<ConstantAggregateZero>(C) ||
+ isa<UndefValue>(C) || isa<MDString>(C))
+ return VMSlot = C; // Primitive constants map directly
+
+ if (ConstantArray *CA = dyn_cast<ConstantArray>(C)) {
+ 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 (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(*i, VM)));
+ return VM[V] = ConstantArray::get(CA->getType(), Values);
}
- return VM[V] = C;
-
- } else if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
- std::vector<Constant*> Ops;
- for (User::op_iterator i = CE->op_begin(), e = CE->op_end(); i != e; ++i)
- Ops.push_back(cast<Constant>(MapValue(*i, VM, Context)));
- 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, Context);
- 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 (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(*i, VM, Context)));
- return VM[V] = Context->getConstantVector(Values);
- }
+ }
+ return VM[V] = C;
+ }
+
+ if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C)) {
+ 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 (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(*i, VM)));
+ return VM[V] = ConstantStruct::get(CS->getType(), Values);
}
- return VM[V] = C;
-
- } else if (MDNode *N = dyn_cast<MDNode>(C)) {
- for (MDNode::const_elem_iterator b = N->elem_begin(), i = b,
- e = N->elem_end(); i != e; ++i) {
- if (!*i) continue;
-
- Value *MV = MapValue(*i, VM, Context);
- if (MV != *i) {
- // This MDNode must contain a reference to a global, make a new MDNode
- // and return it.
- SmallVector<Value*, 8> Values;
- Values.reserve(N->getNumElements());
- for (MDNode::const_elem_iterator j = b; j != i; ++j)
- Values.push_back(*j);
- Values.push_back(MV);
- for (++i; i != e; ++i)
- Values.push_back(MapValue(*i, VM, Context));
- return VM[V] = Context->getMDNode(Values.data(), Values.size());
- }
+ }
+ return VM[V] = C;
+ }
+
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C)) {
+ std::vector<Constant*> Ops;
+ 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);
+ }
+
+ if (ConstantVector *CV = dyn_cast<ConstantVector>(C)) {
+ for (User::op_iterator b = CV->op_begin(), i = b, e = CV->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(CV->getNumOperands());
+ 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(*i, VM)));
+ return VM[V] = ConstantVector::get(Values);
}
- return VM[V] = C;
-
- } else {
- assert(0 && "Unknown type of constant!");
}
+ return VM[V] = C;
}
-
- return 0;
+
+ BlockAddress *BA = cast<BlockAddress>(C);
+ Function *F = cast<Function>(MapValue(BA->getFunction(), VM));
+ BasicBlock *BB = cast_or_null<BasicBlock>(MapValue(BA->getBasicBlock(),VM));
+ return VM[V] = BlockAddress::get(F, BB ? BB : BA->getBasicBlock());
}
/// RemapInstruction - Convert the instruction operands from referencing the
/// current values into those specified by ValueMap.
///
-void llvm::RemapInstruction(Instruction *I, ValueMapTy &ValueMap) {
+void llvm::RemapInstruction(Instruction *I, ValueToValueMapTy &ValueMap) {
for (User::op_iterator op = I->op_begin(), E = I->op_end(); op != E; ++op) {
- Value *V = MapValue(*op, ValueMap, I->getParent()->getContext());
+ Value *V = MapValue(*op, ValueMap);
assert(V && "Referenced value not in value map!");
*op = V;
}
}
+
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