//===----------------------------------------------------------------------===//
#include "llvm/Transforms/Utils/ValueMapper.h"
-#include "llvm/Type.h"
-#include "llvm/Constants.h"
-#include "llvm/Function.h"
-#include "llvm/Instructions.h"
-#include "llvm/Metadata.h"
-#include "llvm/ADT/SmallVector.h"
+#include "llvm/IR/Constants.h"
+#include "llvm/IR/Function.h"
+#include "llvm/IR/InlineAsm.h"
+#include "llvm/IR/Instructions.h"
+#include "llvm/IR/Metadata.h"
using namespace llvm;
-Value *llvm::MapValue(const Value *V, ValueToValueMapTy &VM,
- RemapFlags Flags) {
+// Out of line method to get vtable etc for class.
+void ValueMapTypeRemapper::anchor() {}
+void ValueMaterializer::anchor() {}
+
+Value *llvm::MapValue(const Value *V, ValueToValueMapTy &VM, RemapFlags Flags,
+ ValueMapTypeRemapper *TypeMapper,
+ ValueMaterializer *Materializer) {
ValueToValueMapTy::iterator I = VM.find(V);
// If the value already exists in the map, use it.
if (I != VM.end() && I->second) return I->second;
+ // If we have a materializer and it can materialize a value, use that.
+ if (Materializer) {
+ if (Value *NewV = Materializer->materializeValueFor(const_cast<Value*>(V)))
+ return VM[V] = NewV;
+ }
+
// Global values do not need to be seeded into the VM if they
// are using the identity mapping.
- if (isa<GlobalValue>(V) || isa<InlineAsm>(V) || isa<MDString>(V))
+ if (isa<GlobalValue>(V) || isa<MDString>(V))
+ return VM[V] = const_cast<Value*>(V);
+
+ if (const InlineAsm *IA = dyn_cast<InlineAsm>(V)) {
+ // Inline asm may need *type* remapping.
+ FunctionType *NewTy = IA->getFunctionType();
+ if (TypeMapper) {
+ NewTy = cast<FunctionType>(TypeMapper->remapType(NewTy));
+
+ if (NewTy != IA->getFunctionType())
+ V = InlineAsm::get(NewTy, IA->getAsmString(), IA->getConstraintString(),
+ IA->hasSideEffects(), IA->isAlignStack());
+ }
+
return VM[V] = const_cast<Value*>(V);
+ }
+
if (const MDNode *MD = dyn_cast<MDNode>(V)) {
// If this is a module-level metadata and we know that nothing at the module
return VM[V] = const_cast<Value*>(V);
// Create a dummy node in case we have a metadata cycle.
- MDNode *Dummy = MDNode::getTemporary(V->getContext(), ArrayRef<Value*>());
+ MDNode *Dummy = MDNode::getTemporary(V->getContext(), None);
VM[V] = Dummy;
// Check all operands to see if any need to be remapped.
for (unsigned i = 0, e = MD->getNumOperands(); i != e; ++i) {
Value *OP = MD->getOperand(i);
- if (OP == 0 || MapValue(OP, VM, Flags) == OP) continue;
+ if (!OP) continue;
+ Value *Mapped_OP = MapValue(OP, VM, Flags, TypeMapper, Materializer);
+ // Use identity map if Mapped_Op is null and we can ignore missing
+ // entries.
+ if (Mapped_OP == OP ||
+ (Mapped_OP == nullptr && (Flags & RF_IgnoreMissingEntries)))
+ continue;
// Ok, at least one operand needs remapping.
SmallVector<Value*, 4> Elts;
Elts.reserve(MD->getNumOperands());
for (i = 0; i != e; ++i) {
Value *Op = MD->getOperand(i);
- Elts.push_back(Op ? MapValue(Op, VM, Flags) : 0);
+ if (!Op)
+ Elts.push_back(nullptr);
+ else {
+ Value *Mapped_Op = MapValue(Op, VM, Flags, TypeMapper, Materializer);
+ // Use identity map if Mapped_Op is null and we can ignore missing
+ // entries.
+ if (Mapped_Op == nullptr && (Flags & RF_IgnoreMissingEntries))
+ Mapped_Op = Op;
+ Elts.push_back(Mapped_Op);
+ }
}
MDNode *NewMD = MDNode::get(V->getContext(), Elts);
Dummy->replaceAllUsesWith(NewMD);
// Okay, this either must be a constant (which may or may not be mappable) or
// is something that is not in the mapping table.
Constant *C = const_cast<Constant*>(dyn_cast<Constant>(V));
- if (C == 0)
- return 0;
+ if (!C)
+ return nullptr;
if (BlockAddress *BA = dyn_cast<BlockAddress>(C)) {
- Function *F = cast<Function>(MapValue(BA->getFunction(), VM, Flags));
+ Function *F =
+ cast<Function>(MapValue(BA->getFunction(), VM, Flags, TypeMapper, Materializer));
BasicBlock *BB = cast_or_null<BasicBlock>(MapValue(BA->getBasicBlock(), VM,
- Flags));
+ Flags, TypeMapper, Materializer));
return VM[V] = BlockAddress::get(F, BB ? BB : BA->getBasicBlock());
}
- for (unsigned i = 0, e = C->getNumOperands(); i != e; ++i) {
- Value *Op = C->getOperand(i);
- Value *Mapped = MapValue(Op, VM, Flags);
- if (Mapped == C) continue;
-
- // Okay, the operands don't all match. We've already processed some or all
- // of the operands, set them up now.
- std::vector<Constant*> Ops;
- Ops.reserve(C->getNumOperands());
- for (unsigned j = 0; j != i; ++j)
- Ops.push_back(cast<Constant>(C->getOperand(i)));
+ // Otherwise, we have some other constant to remap. Start by checking to see
+ // if all operands have an identity remapping.
+ unsigned OpNo = 0, NumOperands = C->getNumOperands();
+ Value *Mapped = nullptr;
+ for (; OpNo != NumOperands; ++OpNo) {
+ Value *Op = C->getOperand(OpNo);
+ Mapped = MapValue(Op, VM, Flags, TypeMapper, Materializer);
+ if (Mapped != C) break;
+ }
+
+ // See if the type mapper wants to remap the type as well.
+ Type *NewTy = C->getType();
+ if (TypeMapper)
+ NewTy = TypeMapper->remapType(NewTy);
+
+ // If the result type and all operands match up, then just insert an identity
+ // mapping.
+ if (OpNo == NumOperands && NewTy == C->getType())
+ return VM[V] = C;
+
+ // Okay, we need to create a new constant. We've already processed some or
+ // all of the operands, set them all up now.
+ SmallVector<Constant*, 8> Ops;
+ Ops.reserve(NumOperands);
+ for (unsigned j = 0; j != OpNo; ++j)
+ Ops.push_back(cast<Constant>(C->getOperand(j)));
+
+ // If one of the operands mismatch, push it and the other mapped operands.
+ if (OpNo != NumOperands) {
Ops.push_back(cast<Constant>(Mapped));
-
+
// Map the rest of the operands that aren't processed yet.
- for (++i; i != e; ++i)
- Ops.push_back(cast<Constant>(MapValue(C->getOperand(i), VM, Flags)));
-
- if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
- return VM[V] = CE->getWithOperands(Ops);
- if (ConstantArray *CA = dyn_cast<ConstantArray>(C))
- return VM[V] = ConstantArray::get(CA->getType(), Ops);
- if (ConstantStruct *CS = dyn_cast<ConstantStruct>(C))
- return VM[V] = ConstantStruct::get(CS->getType(), Ops);
- assert(isa<ConstantVector>(C) && "Unknown mapped constant type");
- return VM[V] = ConstantVector::get(Ops);
+ for (++OpNo; OpNo != NumOperands; ++OpNo)
+ Ops.push_back(MapValue(cast<Constant>(C->getOperand(OpNo)), VM,
+ Flags, TypeMapper, Materializer));
}
-
- // If we reach here, all of the operands of the constant match.
- return VM[V] = C;
+
+ if (ConstantExpr *CE = dyn_cast<ConstantExpr>(C))
+ return VM[V] = CE->getWithOperands(Ops, NewTy);
+ if (isa<ConstantArray>(C))
+ return VM[V] = ConstantArray::get(cast<ArrayType>(NewTy), Ops);
+ if (isa<ConstantStruct>(C))
+ return VM[V] = ConstantStruct::get(cast<StructType>(NewTy), Ops);
+ if (isa<ConstantVector>(C))
+ return VM[V] = ConstantVector::get(Ops);
+ // If this is a no-operand constant, it must be because the type was remapped.
+ if (isa<UndefValue>(C))
+ return VM[V] = UndefValue::get(NewTy);
+ if (isa<ConstantAggregateZero>(C))
+ return VM[V] = ConstantAggregateZero::get(NewTy);
+ assert(isa<ConstantPointerNull>(C));
+ return VM[V] = ConstantPointerNull::get(cast<PointerType>(NewTy));
}
/// RemapInstruction - Convert the instruction operands from referencing the
/// current values into those specified by VMap.
///
void llvm::RemapInstruction(Instruction *I, ValueToValueMapTy &VMap,
- RemapFlags Flags) {
+ RemapFlags Flags, ValueMapTypeRemapper *TypeMapper,
+ ValueMaterializer *Materializer){
// Remap operands.
for (User::op_iterator op = I->op_begin(), E = I->op_end(); op != E; ++op) {
- Value *V = MapValue(*op, VMap, Flags);
+ Value *V = MapValue(*op, VMap, Flags, TypeMapper, Materializer);
// If we aren't ignoring missing entries, assert that something happened.
- if (V != 0)
+ if (V)
*op = V;
else
assert((Flags & RF_IgnoreMissingEntries) &&
for (unsigned i = 0, e = PN->getNumIncomingValues(); i != e; ++i) {
Value *V = MapValue(PN->getIncomingBlock(i), VMap, Flags);
// If we aren't ignoring missing entries, assert that something happened.
- if (V != 0)
+ if (V)
PN->setIncomingBlock(i, cast<BasicBlock>(V));
else
assert((Flags & RF_IgnoreMissingEntries) &&
I->getAllMetadata(MDs);
for (SmallVectorImpl<std::pair<unsigned, MDNode *> >::iterator
MI = MDs.begin(), ME = MDs.end(); MI != ME; ++MI) {
- Value *Old = MI->second;
- Value *New = MapValue(Old, VMap, Flags);
+ MDNode *Old = MI->second;
+ MDNode *New = MapValue(Old, VMap, Flags, TypeMapper, Materializer);
if (New != Old)
- I->setMetadata(MI->first, cast<MDNode>(New));
+ I->setMetadata(MI->first, New);
}
+
+ // If the instruction's type is being remapped, do so now.
+ if (TypeMapper)
+ I->mutateType(TypeMapper->remapType(I->getType()));
}
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