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https://github.com/c64scene-ar/llvm-6502.git
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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@2777 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -96,20 +96,20 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
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}
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// Check to see if it's a constant that we are interesting in transforming...
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if (Constant *CPV = dyn_cast<Constant>(In)) {
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if (const Constant *CPV = dyn_cast<Constant>(In)) {
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if (!isa<DerivedType>(CPV->getType()))
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return CPV; // Simple constants stay identical...
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return const_cast<Constant*>(CPV); // Simple constants stay identical...
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Constant *Result = 0;
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if (ConstantArray *CPA = dyn_cast<ConstantArray>(CPV)) {
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if (const ConstantArray *CPA = dyn_cast<ConstantArray>(CPV)) {
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const std::vector<Use> &Ops = CPA->getValues();
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std::vector<Constant*> Operands(Ops.size());
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for (unsigned i = 0; i < Ops.size(); ++i)
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Operands[i] =
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cast<Constant>(RemapOperand(Ops[i], LocalMap, GlobalMap));
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Result = ConstantArray::get(cast<ArrayType>(CPA->getType()), Operands);
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} else if (ConstantStruct *CPS = dyn_cast<ConstantStruct>(CPV)) {
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} else if (const ConstantStruct *CPS = dyn_cast<ConstantStruct>(CPV)) {
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const std::vector<Use> &Ops = CPS->getValues();
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std::vector<Constant*> Operands(Ops.size());
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for (unsigned i = 0; i < Ops.size(); ++i)
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@ -117,8 +117,9 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
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cast<Constant>(RemapOperand(Ops[i], LocalMap, GlobalMap));
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Result = ConstantStruct::get(cast<StructType>(CPS->getType()), Operands);
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} else if (isa<ConstantPointerNull>(CPV)) {
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Result = CPV;
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} else if (ConstantPointerRef *CPR = dyn_cast<ConstantPointerRef>(CPV)) {
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Result = const_cast<Constant*>(CPV);
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} else if (const ConstantPointerRef *CPR =
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dyn_cast<ConstantPointerRef>(CPV)) {
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Value *V = RemapOperand(CPR->getValue(), LocalMap, GlobalMap);
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Result = ConstantPointerRef::get(cast<GlobalValue>(V));
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} else {
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@ -126,7 +127,7 @@ static Value *RemapOperand(const Value *In, map<const Value*, Value*> &LocalMap,
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}
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// Cache the mapping in our local map structure...
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LocalMap.insert(std::make_pair(In, CPV));
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LocalMap.insert(std::make_pair(In, const_cast<Constant*>(CPV)));
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return Result;
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}
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@ -158,7 +159,7 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
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// Loop over all of the globals in the src module, mapping them over as we go
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//
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for (Module::const_giterator I = Src->gbegin(), E = Src->gend(); I != E; ++I){
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const GlobalVariable *SGV = *I;
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const GlobalVariable *SGV = I;
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Value *V;
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// If the global variable has a name, and that name is already in use in the
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@ -211,7 +212,7 @@ static bool LinkGlobalInits(Module *Dest, const Module *Src,
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// Loop over all of the globals in the src module, mapping them over as we go
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//
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for (Module::const_giterator I = Src->gbegin(), E = Src->gend(); I != E; ++I){
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const GlobalVariable *SGV = *I;
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const GlobalVariable *SGV = I;
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if (SGV->hasInitializer()) { // Only process initialized GV's
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// Figure out what the initializer looks like in the dest module...
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@ -249,41 +250,41 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
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// go
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//
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for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
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const Function *SM = *I; // SrcFunction
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const Function *SF = I; // SrcFunction
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Value *V;
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// If the function has a name, and that name is already in use in the Dest
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// module, make sure that the name is a compatible function...
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//
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if (SM->hasExternalLinkage() && SM->hasName() &&
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(V = ST->lookup(SM->getType(), SM->getName())) &&
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if (SF->hasExternalLinkage() && SF->hasName() &&
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(V = ST->lookup(SF->getType(), SF->getName())) &&
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cast<Function>(V)->hasExternalLinkage()) {
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// The same named thing is a Function, because the only two things
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// that may be in a module level symbol table are Global Vars and
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// Functions, and they both have distinct, nonoverlapping, possible types.
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//
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Function *DM = cast<Function>(V); // DestFunction
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Function *DF = cast<Function>(V); // DestFunction
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// Check to make sure the function is not defined in both modules...
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if (!SM->isExternal() && !DM->isExternal())
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if (!SF->isExternal() && !DF->isExternal())
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return Error(Err, "Function '" +
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SM->getFunctionType()->getDescription() + "':\"" +
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SM->getName() + "\" - Function is already defined!");
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SF->getFunctionType()->getDescription() + "':\"" +
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SF->getName() + "\" - Function is already defined!");
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// Otherwise, just remember this mapping...
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ValueMap.insert(std::make_pair(SM, DM));
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ValueMap.insert(std::make_pair(SF, DF));
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} else {
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// Function does not already exist, simply insert an external function
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// signature identical to SM into the dest module...
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Function *DM = new Function(SM->getFunctionType(),
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SM->hasInternalLinkage(),
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SM->getName());
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// signature identical to SF into the dest module...
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Function *DF = new Function(SF->getFunctionType(),
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SF->hasInternalLinkage(),
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SF->getName());
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// Add the function signature to the dest module...
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Dest->getFunctionList().push_back(DM);
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Dest->getFunctionList().push_back(DF);
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// ... and remember this mapping...
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ValueMap.insert(std::make_pair(SM, DM));
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ValueMap.insert(std::make_pair(SF, DF));
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}
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}
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return false;
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@ -300,27 +301,22 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
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map<const Value*, Value*> LocalMap; // Map for function local values
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// Go through and convert function arguments over...
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for (Function::ArgumentListType::const_iterator
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I = Src->getArgumentList().begin(),
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E = Src->getArgumentList().end(); I != E; ++I) {
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const Argument *SMA = *I;
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for (Function::const_aiterator I = Src->abegin(), E = Src->aend();
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I != E; ++I) {
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// Create the new function argument and add to the dest function...
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Argument *DMA = new Argument(SMA->getType(), SMA->getName());
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Dest->getArgumentList().push_back(DMA);
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Argument *DFA = new Argument(I->getType(), I->getName());
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Dest->getArgumentList().push_back(DFA);
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// Add a mapping to our local map
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LocalMap.insert(std::make_pair(SMA, DMA));
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LocalMap.insert(std::make_pair(I, DFA));
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}
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// Loop over all of the basic blocks, copying the instructions over...
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//
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for (Function::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
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const BasicBlock *SBB = *I;
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// Create new basic block and add to mapping and the Dest function...
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BasicBlock *DBB = new BasicBlock(SBB->getName(), Dest);
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LocalMap.insert(std::make_pair(SBB, DBB));
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BasicBlock *DBB = new BasicBlock(I->getName(), Dest);
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LocalMap.insert(std::make_pair(I, DBB));
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// Loop over all of the instructions in the src basic block, copying them
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// over. Note that this is broken in a strict sense because the cloned
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@ -328,13 +324,12 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
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// the remapped values. In our case, however, we will not get caught and
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// so we can delay patching the values up until later...
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//
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for (BasicBlock::const_iterator II = SBB->begin(), IE = SBB->end();
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for (BasicBlock::const_iterator II = I->begin(), IE = I->end();
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II != IE; ++II) {
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const Instruction *SI = *II;
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Instruction *DI = SI->clone();
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DI->setName(SI->getName());
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Instruction *DI = II->clone();
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DI->setName(II->getName());
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DBB->getInstList().push_back(DI);
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LocalMap.insert(std::make_pair(SI, DI));
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LocalMap.insert(std::make_pair(II, DI));
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}
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}
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@ -343,17 +338,11 @@ static bool LinkFunctionBody(Function *Dest, const Function *Src,
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// the Source function as operands. Loop through all of the operands of the
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// functions and patch them up to point to the local versions...
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//
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for (Function::iterator BI = Dest->begin(), BE = Dest->end();
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BI != BE; ++BI) {
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BasicBlock *BB = *BI;
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for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I) {
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Instruction *Inst = *I;
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for (Instruction::op_iterator OI = Inst->op_begin(), OE = Inst->op_end();
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for (Function::iterator BB = Dest->begin(), BE = Dest->end(); BB != BE; ++BB)
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for (BasicBlock::iterator I = BB->begin(), E = BB->end(); I != E; ++I)
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for (Instruction::op_iterator OI = I->op_begin(), OE = I->op_end();
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OI != OE; ++OI)
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*OI = RemapOperand(*OI, LocalMap, &GlobalMap);
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}
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}
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return false;
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}
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@ -370,20 +359,19 @@ static bool LinkFunctionBodies(Module *Dest, const Module *Src,
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// Loop over all of the functions in the src module, mapping them over as we
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// go
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//
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for (Module::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
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const Function *SM = *I; // Source Function
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if (!SM->isExternal()) { // No body if function is external
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Function *DM = cast<Function>(ValueMap[SM]); // Destination function
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for (Module::const_iterator SF = Src->begin(), E = Src->end(); SF != E; ++SF){
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if (!SF->isExternal()) { // No body if function is external
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Function *DF = cast<Function>(ValueMap[SF]); // Destination function
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// DM not external SM external?
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if (!DM->isExternal()) {
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// DF not external SF external?
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if (!DF->isExternal()) {
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if (Err)
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*Err = "Function '" + (SM->hasName() ? SM->getName() : string("")) +
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*Err = "Function '" + (SF->hasName() ? SF->getName() : string("")) +
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"' body multiply defined!";
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return true;
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}
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if (LinkFunctionBody(DM, SM, ValueMap, Err)) return true;
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if (LinkFunctionBody(DF, SF, ValueMap, Err)) return true;
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}
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}
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return false;
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