// Specifically, this:
// * Merges global variables between the two modules
// * Uninit + Uninit = Init, Init + Uninit = Init, Init + Init = Error if !=
-// * Merges methods between two modules
+// * Merges functions between two modules
//
//===----------------------------------------------------------------------===//
-#include "llvm/Transforms/Linker.h"
+#include "llvm/Transforms/Utils/Linker.h"
#include "llvm/Module.h"
-#include "llvm/Method.h"
-#include "llvm/BasicBlock.h"
-#include "llvm/GlobalVariable.h"
#include "llvm/SymbolTable.h"
#include "llvm/DerivedTypes.h"
#include "llvm/iOther.h"
-#include "llvm/ConstantVals.h"
-#include <iostream>
+#include "llvm/Constants.h"
using std::cerr;
using std::string;
using std::map;
return true;
}
-#include "llvm/Assembly/Writer.h" // TODO: REMOVE
-
-
// LinkTypes - Go through the symbol table of the Src module and see if any
// types are named in the src module that are not named in the Dst module.
// Make sure there are no type name conflicts.
static void PrintMap(const map<const Value*, Value*> &M) {
for (map<const Value*, Value*>::const_iterator I = M.begin(), E = M.end();
I != E; ++I) {
- cerr << " Fr: " << (void*)I->first << " " << I->first
- << " To: " << (void*)I->second << " " << I->second << "\n";
+ cerr << " Fr: " << (void*)I->first << " ";
+ I->first->dump();
+ cerr << " To: " << (void*)I->second << " ";
+ I->second->dump();
+ cerr << "\n";
}
}
}
// Check to see if it's a constant that we are interesting in transforming...
- if (Constant *CPV = dyn_cast<Constant>(In)) {
- if (!isa<DerivedType>(CPV->getType()))
- return CPV; // Simple constants stay identical...
+ if (const Constant *CPV = dyn_cast<Constant>(In)) {
+ if (!isa<DerivedType>(CPV->getType()) && !isa<ConstantExpr>(CPV))
+ 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)
+ for (unsigned i = 0, e = Ops.size(); i != e; ++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)
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 if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(CPV)) {
+ if (CE->getNumOperands() == 1) {
+ // Cast instruction
+ assert(CE->getOpcode() == Instruction::Cast);
+ Value *V = RemapOperand(CE->getOperand(0), LocalMap, GlobalMap);
+ Result = ConstantExpr::getCast(cast<Constant>(V), CE->getType());
+ } else if (CE->getNumOperands() == 2) {
+ // Binary operator...
+ Value *V1 = RemapOperand(CE->getOperand(0), LocalMap, GlobalMap);
+ Value *V2 = RemapOperand(CE->getOperand(1), LocalMap, GlobalMap);
+
+ Result = ConstantExpr::get(CE->getOpcode(), cast<Constant>(V1),
+ cast<Constant>(V2));
+ } else {
+ // GetElementPtr Expression
+ assert(CE->getOpcode() == Instruction::GetElementPtr);
+ Value *Ptr = RemapOperand(CE->getOperand(0), LocalMap, GlobalMap);
+ std::vector<Constant*> Indices;
+ Indices.reserve(CE->getNumOperands()-1);
+ for (unsigned i = 1, e = CE->getNumOperands(); i != e; ++i)
+ Indices.push_back(cast<Constant>(RemapOperand(CE->getOperand(i),
+ LocalMap, GlobalMap)));
+
+ Result = ConstantExpr::getGetElementPtr(cast<Constant>(Ptr), Indices);
+ }
+
} else {
assert(0 && "Unknown type of derived type constant value!");
}
// Cache the mapping in our local map structure...
- LocalMap.insert(std::make_pair(In, CPV));
+ LocalMap.insert(std::make_pair(In, Result));
return Result;
}
PrintMap(*GlobalMap);
}
- cerr << "Couldn't remap value: " << (void*)In << " " << In << "\n";
+ cerr << "Couldn't remap value: " << (void*)In << " " << *In << "\n";
assert(0 && "Couldn't remap value!");
return 0;
}
// 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
(V = ST->lookup(SGV->getType(), SGV->getName())) &&
cast<GlobalVariable>(V)->hasExternalLinkage()) {
// The same named thing is a global variable, because the only two things
- // that may be in a module level symbol table are Global Vars and Methods,
- // and they both have distinct, nonoverlapping, possible types.
+ // that may be in a module level symbol table are Global Vars and
+ // Functions, and they both have distinct, nonoverlapping, possible types.
//
GlobalVariable *DGV = cast<GlobalVariable>(V);
// 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...
return false;
}
-// LinkMethodProtos - Link the methods together between the two modules, without
-// doing method bodies... this just adds external method prototypes to the Dest
-// method...
+// LinkFunctionProtos - Link the functions together between the two modules,
+// without doing function bodies... this just adds external function prototypes
+// to the Dest function...
//
-static bool LinkMethodProtos(Module *Dest, const Module *Src,
- map<const Value*, Value*> &ValueMap,
- string *Err = 0) {
+static bool LinkFunctionProtos(Module *Dest, const Module *Src,
+ map<const Value*, Value*> &ValueMap,
+ string *Err = 0) {
// We will need a module level symbol table if the src module has a module
// level symbol table...
SymbolTable *ST = Src->getSymbolTable() ? Dest->getSymbolTableSure() : 0;
- // Loop over all of the methods in the src module, mapping them over as we go
+ // 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 Method *SM = *I; // SrcMethod
+ const Function *SF = I; // SrcFunction
Value *V;
- // If the method has a name, and that name is already in use in the
- // Dest module, make sure that the name is a compatible method...
+ // 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())) &&
- cast<Method>(V)->hasExternalLinkage()) {
- // The same named thing is a Method, because the only two things
- // that may be in a module level symbol table are Global Vars and Methods,
- // and they both have distinct, nonoverlapping, possible types.
+ 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.
//
- Method *DM = cast<Method>(V); // DestMethod
+ Function *DF = cast<Function>(V); // DestFunction
- // Check to make sure the method is not defined in both modules...
- if (!SM->isExternal() && !DM->isExternal())
- return Error(Err, "Method '" +
- SM->getMethodType()->getDescription() + "':\"" +
- SM->getName() + "\" - Method is already defined!");
+ // Check to make sure the function is not defined in both modules...
+ if (!SF->isExternal() && !DF->isExternal())
+ return Error(Err, "Function '" +
+ 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 {
- // Method does not already exist, simply insert an external method
- // signature identical to SM into the dest module...
- Method *DM = new Method(SM->getMethodType(), SM->hasInternalLinkage(),
- SM->getName());
+ // Function does not already exist, simply insert an external function
+ // signature identical to SF into the dest module...
+ Function *DF = new Function(SF->getFunctionType(),
+ SF->hasInternalLinkage(),
+ SF->getName());
- // Add the method signature to the dest module...
- Dest->getMethodList().push_back(DM);
+ // Add the function signature to the dest module...
+ 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;
}
-// LinkMethodBody - Copy the source method over into the dest method and fix up
-// references to values. At this point we know that Dest is an external method,
-// and that Src is not.
+// LinkFunctionBody - Copy the source function over into the dest function and
+// fix up references to values. At this point we know that Dest is an external
+// function, and that Src is not.
//
-static bool LinkMethodBody(Method *Dest, const Method *Src,
- const map<const Value*, Value*> &GlobalMap,
- string *Err = 0) {
+static bool LinkFunctionBody(Function *Dest, const Function *Src,
+ const map<const Value*, Value*> &GlobalMap,
+ string *Err = 0) {
assert(Src && Dest && Dest->isExternal() && !Src->isExternal());
- map<const Value*, Value*> LocalMap; // Map for method local values
+ map<const Value*, Value*> LocalMap; // Map for function local values
- // Go through and convert method arguments over...
- for (Method::ArgumentListType::const_iterator
- I = Src->getArgumentList().begin(),
- E = Src->getArgumentList().end(); I != E; ++I) {
- const MethodArgument *SMA = *I;
-
- // Create the new method argument and add to the dest method...
- MethodArgument *DMA = new MethodArgument(SMA->getType(), SMA->getName());
- Dest->getArgumentList().push_back(DMA);
+ // Go through and convert function arguments over...
+ 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 *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 (Method::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 method...
- BasicBlock *DBB = new BasicBlock(SBB->getName(), Dest);
- LocalMap.insert(std::make_pair(SBB, DBB));
+ for (Function::const_iterator I = Src->begin(), E = Src->end(); I != E; ++I) {
+ // Create new basic block and add to mapping and the Dest function...
+ 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
// 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));
}
}
- // At this point, all of the instructions and values of the method are now
- // copied over. The only problem is that they are still referencing values
- // in the Source method as operands. Loop through all of the operands of the
- // methods and patch them up to point to the local versions...
+ // At this point, all of the instructions and values of the function are now
+ // copied over. The only problem is that they are still referencing values in
+ // 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 (Method::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;
}
-// LinkMethodBodies - Link in the method bodies that are defined in the source
-// module into the DestModule. This consists basically of copying the method
-// over and fixing up references to values.
+// LinkFunctionBodies - Link in the function bodies that are defined in the
+// source module into the DestModule. This consists basically of copying the
+// function over and fixing up references to values.
//
-static bool LinkMethodBodies(Module *Dest, const Module *Src,
- map<const Value*, Value*> &ValueMap,
- string *Err = 0) {
+static bool LinkFunctionBodies(Module *Dest, const Module *Src,
+ map<const Value*, Value*> &ValueMap,
+ string *Err = 0) {
- // Loop over all of the methods in the src module, mapping them over as we go
+ // 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 Method *SM = *I; // Source Method
- if (!SM->isExternal()) { // No body if method is external
- Method *DM = cast<Method>(ValueMap[SM]); // Destination method
+ 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 = "Method '" + (SM->hasName() ? SM->getName() : string("")) +
+ *Err = "Function '" + (SF->hasName() ? SF->getName() : string("")) +
"' body multiply defined!";
return true;
}
- if (LinkMethodBody(DM, SM, ValueMap, Err)) return true;
+ if (LinkFunctionBody(DF, SF, ValueMap, Err)) return true;
}
}
return false;
// the problem. Upon failure, the Dest module could be in a modified state, and
// shouldn't be relied on to be consistent.
//
-bool LinkModules(Module *Dest, const Module *Src, string *ErrorMsg = 0) {
+bool LinkModules(Module *Dest, const Module *Src, string *ErrorMsg) {
// LinkTypes - Go through the symbol table of the Src module and see if any
// types are named in the src module that are not named in the Dst module.
// initializers
if (LinkGlobals(Dest, Src, ValueMap, ErrorMsg)) return true;
+ // Link the functions together between the two modules, without doing function
+ // bodies... this just adds external function prototypes to the Dest
+ // function... We do this so that when we begin processing function bodies,
+ // all of the global values that may be referenced are available in our
+ // ValueMap.
+ //
+ if (LinkFunctionProtos(Dest, Src, ValueMap, ErrorMsg)) return true;
+
// Update the initializers in the Dest module now that all globals that may
// be referenced are in Dest.
//
if (LinkGlobalInits(Dest, Src, ValueMap, ErrorMsg)) return true;
- // Link the methods together between the two modules, without doing method
- // bodies... this just adds external method prototypes to the Dest method...
- // We do this so that when we begin processing method bodies, all of the
- // global values that may be referenced are available in our ValueMap.
- //
- if (LinkMethodProtos(Dest, Src, ValueMap, ErrorMsg)) return true;
-
- // Link in the method bodies that are defined in the source module into the
- // DestModule. This consists basically of copying the method over and fixing
- // up references to values.
+ // Link in the function bodies that are defined in the source module into the
+ // DestModule. This consists basically of copying the function over and
+ // fixing up references to values.
//
- if (LinkMethodBodies(Dest, Src, ValueMap, ErrorMsg)) return true;
+ if (LinkFunctionBodies(Dest, Src, ValueMap, ErrorMsg)) return true;
return false;
}
projects / oota-llvm.git / blobdiff