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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2777 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner
2002-06-25 16:12:52 +00:00
parent a2204e1ff2
commit 18961504fc
43 changed files with 650 additions and 682 deletions
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102
lib/Transforms/Utils/Linker.cpp
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@ -96,20 +96,20 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
}
// Check to see if it's a constant that we are interesting in transforming...
if (Constant *CPV = dyn_cast<Constant>(In)) {
if (const Constant *CPV = dyn_cast<Constant>(In)) {
if (!isa<DerivedType>(CPV->getType()))
return CPV; // Simple constants stay identical...
return const_cast<Constant*>(CPV); // Simple constants stay identical...
Constant *Result = 0;
if (ConstantArray *CPA = dyn_cast<ConstantArray>(CPV)) {
if (const ConstantArray *CPA = dyn_cast<ConstantArray>(CPV)) {
const std::vector<Use> &Ops = CPA->getValues();
std::vector<Constant*> Operands(Ops.size());
for (unsigned i = 0; i < Ops.size(); ++i)
Operands[i] =
cast<Constant>(RemapOperand(Ops[i], LocalMap, GlobalMap));
Result = ConstantArray::get(cast<ArrayType>(CPA->getType()), Operands);
} else if (ConstantStruct *CPS = dyn_cast<ConstantStruct>(CPV)) {
} else if (const ConstantStruct *CPS = dyn_cast<ConstantStruct>(CPV)) {
const std::vector<Use> &Ops = CPS->getValues();
std::vector<Constant*> Operands(Ops.size());
for (unsigned i = 0; i < Ops.size(); ++i)
@ -117,8 +117,9 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
cast<Constant>(RemapOperand(Ops[i], LocalMap, GlobalMap));
Result = ConstantStruct::get(cast<StructType>(CPS->getType()), Operands);
} else if (isa<ConstantPointerNull>(CPV)) {
Result = CPV;
} else if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(CPV)) {
Result = const_cast<Constant*>(CPV);
} else if (const ConstantPointerRef *CPR =
dyn_cast<ConstantPointerRef>(CPV)) {
Value *V = RemapOperand(CPR->getValue(), LocalMap, GlobalMap);
Result = ConstantPointerRef::get(cast<GlobalValue>(V));
} else {
@ -126,7 +127,7 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
}
// Cache the mapping in our local map structure...
LocalMap.insert(std::make_pair(In, CPV));
LocalMap.insert(std::make_pair(In, const_cast<Constant*>(CPV)));
return Result;
}
@ -158,7 +159,7 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
// Loop over all of the globals in the src module, mapping them over as we go
//
for (Module::const_giterator I = Src->gbegin(), E = Src->gend(); I != E; ++I){
const GlobalVariable *SGV = *I;
const GlobalVariable *SGV = I;
Value *V;
// If the global variable has a name, and that name is already in use in the
@ -211,7 +212,7 @@ static bool LinkGlobalInits(Module *Dest, const Module *Src,
// Loop over all of the globals in the src module, mapping them over as we go
//
for (Module::const_giterator I = Src->gbegin(), E = Src->gend(); I != E; ++I){
const GlobalVariable *SGV = *I;
const GlobalVariable *SGV = I;
if (SGV->hasInitializer()) { // Only process initialized GV's
// Figure out what the initializer looks like in the dest module...
@ -249,41 +250,41 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
// go
//
for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
const Function *SM = *I; // SrcFunction
const Function *SF = I; // SrcFunction
Value *V;
// If the function has a name, and that name is already in use in the Dest
// module, make sure that the name is a compatible function...
//
if (SM->hasExternalLinkage() && SM->hasName() &&
(V = ST->lookup(SM->getType(), SM->getName())) &&
if (SF->hasExternalLinkage() && SF->hasName() &&
(V = ST->lookup(SF->getType(), SF->getName())) &&
cast<Function>(V)->hasExternalLinkage()) {
// The same named thing is a Function, because the only two things
// that may be in a module level symbol table are Global Vars and
// Functions, and they both have distinct, nonoverlapping, possible types.
//
Function *DM = cast<Function>(V); // DestFunction
Function *DF = cast<Function>(V); // DestFunction
// Check to make sure the function is not defined in both modules...
if (!SM->isExternal() && !DM->isExternal())
if (!SF->isExternal() && !DF->isExternal())
return Error(Err, "Function '" +
SM->getFunctionType()->getDescription() + "':\"" +
SM->getName() + "\" - Function is already defined!");
SF->getFunctionType()->getDescription() + "':\"" +
SF->getName() + "\" - Function is already defined!");
// Otherwise, just remember this mapping...
ValueMap.insert(std::make_pair(SM, DM));
ValueMap.insert(std::make_pair(SF, DF));
} else {
// Function does not already exist, simply insert an external function
// signature identical to SM into the dest module...
Function *DM = new Function(SM->getFunctionType(),
SM->hasInternalLinkage(),
SM->getName());
// signature identical to SF into the dest module...
Function *DF = new Function(SF->getFunctionType(),
SF->hasInternalLinkage(),
SF->getName());
// Add the function signature to the dest module...
Dest->getFunctionList().push_back(DM);
Dest->getFunctionList().push_back(DF);
// ... and remember this mapping...
ValueMap.insert(std::make_pair(SM, DM));
ValueMap.insert(std::make_pair(SF, DF));
}
}
return false;
@ -300,27 +301,22 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
map<const Value*, Value*> LocalMap; // Map for function local values
// Go through and convert function arguments over...
for (Function::ArgumentListType::const_iterator
I = Src->getArgumentList().begin(),
E = Src->getArgumentList().end(); I != E; ++I) {
const Argument *SMA = *I;
for (Function::const_aiterator I = Src->abegin(), E = Src->aend();
I != E; ++I) {
// Create the new function argument and add to the dest function...
Argument *DMA = new Argument(SMA->getType(), SMA->getName());
Dest->getArgumentList().push_back(DMA);
Argument *DFA = new Argument(I->getType(), I->getName());
Dest->getArgumentList().push_back(DFA);
// Add a mapping to our local map
LocalMap.insert(std::make_pair(SMA, DMA));
LocalMap.insert(std::make_pair(I, DFA));
}
// Loop over all of the basic blocks, copying the instructions over...
//
for (Function::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
const BasicBlock *SBB = *I;
// Create new basic block and add to mapping and the Dest function...
BasicBlock *DBB = new BasicBlock(SBB->getName(), Dest);
LocalMap.insert(std::make_pair(SBB, DBB));
BasicBlock *DBB = new BasicBlock(I->getName(), Dest);
LocalMap.insert(std::make_pair(I, DBB));
// Loop over all of the instructions in the src basic block, copying them
// over. Note that this is broken in a strict sense because the cloned
@ -328,13 +324,12 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
// the remapped values. In our case, however, we will not get caught and
// so we can delay patching the values up until later...
//
for (BasicBlock::const_iterator II = SBB->begin(), IE = SBB->end();
for (BasicBlock::const_iterator II = I->begin(), IE = I->end();
II != IE; ++II) {
const Instruction *SI = *II;
Instruction *DI = SI->clone();
DI->setName(SI->getName());
Instruction *DI = II->clone();
DI->setName(II->getName());
DBB->getInstList().push_back(DI);
LocalMap.insert(std::make_pair(SI, DI));
LocalMap.insert(std::make_pair(II, DI));
}
}
@ -343,17 +338,11 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
// the Source function as operands. Loop through all of the operands of the
// functions and patch them up to point to the local versions...
//
for (Function::iterator BI = Dest->begin(), BE = Dest->end();
BI != BE; ++BI) {
BasicBlock *BB = *BI;
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
Instruction *Inst = *I;
for (Instruction::op_iterator OI = Inst->op_begin(), OE = Inst->op_end();
for (Function::iterator BB = Dest->begin(), BE = Dest->end(); BB != BE; ++BB)
for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
for (Instruction::op_iterator OI = I->op_begin(), OE = I->op_end();
OI != OE; ++OI)
*OI = RemapOperand(*OI, LocalMap, &GlobalMap);
}
}
return false;
}
@ -370,20 +359,19 @@ static bool LinkFunctionBodies(Module *Dest, const Module *Src,
// Loop over all of the functions in the src module, mapping them over as we
// go
//
for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
const Function *SM = *I; // Source Function
if (!SM->isExternal()) { // No body if function is external
Function *DM = cast<Function>(ValueMap[SM]); // Destination function
for (Module::const_iterator SF = Src->begin(), E = Src->end(); SF != E; ++SF){
if (!SF->isExternal()) { // No body if function is external
Function *DF = cast<Function>(ValueMap[SF]); // Destination function
// DM not external SM external?
if (!DM->isExternal()) {
// DF not external SF external?
if (!DF->isExternal()) {
if (Err)
*Err = "Function '" + (SM->hasName() ? SM->getName() : string("")) +
*Err = "Function '" + (SF->hasName() ? SF->getName() : string("")) +
"' body multiply defined!";
return true;
}
if (LinkFunctionBody(DM, SM, ValueMap, Err)) return true;
if (LinkFunctionBody(DF, SF, ValueMap, Err)) return true;
}
}
return false;