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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18242 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-11-25 09:29:44 +00:00
parent df561f4ab3
commit 719012d625
1 changed files with 2 additions and 25 deletions
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27
lib/Linker/LinkModules.cpp
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@ -30,12 +30,12 @@ using namespace llvm;
// Error - Simple wrapper function to conditionally assign to E and return true.
// This just makes error return conditions a little bit simpler...
//
static inline bool Error(std::string *E, const std::string &Message) {
if (E) *E = Message;
return true;
}
// ToStr - Simple wrapper function to convert a type to a string.
static std::string ToStr(const Type *Ty, const Module *M) {
std::ostringstream OS;
WriteTypeSymbolic(OS, Ty, M);
@ -91,7 +91,6 @@ static const StructType *getST(const PATypeHolder &TH) {
// RecursiveResolveTypes - This is just like ResolveTypes, except that it
// recurses down into derived types, merging the used types if the parent types
// are compatible.
//
static bool RecursiveResolveTypesI(const PATypeHolder &DestTy,
const PATypeHolder &SrcTy,
SymbolTable *DestST, const std::string &Name,
@ -145,7 +144,6 @@ static bool RecursiveResolveTypesI(const PATypeHolder &DestTy,
// so, we are in a recursive branch. Cut off the search now. We cannot use
// an associative container for this search, because the type pointers (keys
// in the container) change whenever types get resolved...
//
for (unsigned i = 0, e = Pointers.size(); i != e; ++i)
if (Pointers[i].first == DestTy)
return Pointers[i].second != SrcTy;
@ -175,7 +173,6 @@ static bool RecursiveResolveTypes(const PATypeHolder &DestTy,
// 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 bool LinkTypes(Module *Dest, const Module *Src, std::string *Err) {
SymbolTable *DestST = &Dest->getSymbolTable();
const SymbolTable *SrcST = &Src->getSymbolTable();
@ -278,7 +275,6 @@ static void PrintMap(const std::map<const Value*, Value*> &M) {
// RemapOperand - Use ValueMap to convert references from one module to another.
// This is somewhat sophisticated in that it can automatically handle constant
// references correctly as well...
//
static Value *RemapOperand(const Value *In,
std::map<const Value*, Value*> &ValueMap) {
std::map<const Value*,Value*>::const_iterator I = ValueMap.find(In);
@ -381,7 +377,6 @@ static void ForceRenaming(GlobalValue *GV, const std::string &Name) {
// LinkGlobals - Loop through the global variables in the src module and merge
// them into the dest module.
//
static bool LinkGlobals(Module *Dest, const Module *Src,
std::map<const Value*, Value*> &ValueMap,
std::multimap<std::string, GlobalVariable *> &AppendingVars,
@ -392,7 +387,6 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
SymbolTable *ST = (SymbolTable*)&Dest->getSymbolTable();
// 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;
GlobalVariable *DGV = 0;
@ -418,7 +412,6 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
// No linking to be performed, simply create an identical version of the
// symbol over in the dest module... the initializer will be filled in
// later by LinkGlobalInits...
//
GlobalVariable *NewDGV =
new GlobalVariable(SGV->getType()->getElementType(),
SGV->isConstant(), SGV->getLinkage(), /*init*/0,
@ -534,13 +527,11 @@ static bool LinkGlobals(Module *Dest, const Module *Src,
// LinkGlobalInits - Update the initializers in the Dest module now that all
// globals that may be referenced are in Dest.
//
static bool LinkGlobalInits(Module *Dest, const Module *Src,
std::map<const Value*, Value*> &ValueMap,
std::string *Err) {
// 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;
@ -588,7 +579,6 @@ static bool LinkFunctionProtos(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 *SF = I; // SrcFunction
Function *DF = 0;
@ -659,7 +649,6 @@ static bool LinkFunctionProtos(Module *Dest, const Module *Src,
// 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 LinkFunctionBody(Function *Dest, Function *Src,
std::map<const Value*, Value*> &GlobalMap,
std::string *Err) {
@ -701,14 +690,12 @@ static bool LinkFunctionBody(Function *Dest, Function *Src,
// 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 LinkFunctionBodies(Module *Dest, Module *Src,
std::map<const Value*, Value*> &ValueMap,
std::string *Err) {
// Loop over all of the functions in the src module, mapping them over as we
// go
//
for (Module::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
@ -726,7 +713,6 @@ static bool LinkFunctionBodies(Module *Dest, Module *Src,
// LinkAppendingVars - If there were any appending global variables, link them
// together now. Return true on error.
//
static bool LinkAppendingVars(Module *M,
std::multimap<std::string, GlobalVariable *> &AppendingVars,
std::string *ErrorMsg) {
@ -736,7 +722,6 @@ static bool LinkAppendingVars(Module *M,
// same name, forming a new appending global variable with both of the
// initializers merged together, then rewrite references to the old variables
// and delete them.
//
std::vector<Constant*> Inits;
while (AppendingVars.size() > 1) {
// Get the first two elements in the map...
@ -833,7 +818,7 @@ bool llvm::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
Dest->getPointerSize() != Src->getPointerSize())
std::cerr << "WARNING: Linking two modules of different pointer size!\n";
// Update the destination module's dependent libraries list with the libraries
// Update the destination module's dependent libraries list with the libraries
// from the source module. There's no opportunity for duplicates here as the
// Module ensures that duplicate insertions are discarded.
Module::lib_iterator SI = Src->lib_begin();
@ -846,18 +831,15 @@ bool llvm::LinkModules(Module *Dest, Module *Src, std::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.
// Make sure there are no type name conflicts.
//
if (LinkTypes(Dest, Src, ErrorMsg)) return true;
// ValueMap - Mapping of values from what they used to be in Src, to what they
// are now in Dest.
//
std::map<const Value*, Value*> ValueMap;
// AppendingVars - Keep track of global variables in the destination module
// with appending linkage. After the module is linked together, they are
// appended and the module is rewritten.
//
std::multimap<std::string, GlobalVariable *> AppendingVars;
// GlobalsByName - The LLVM SymbolTable class fights our best efforts at
@ -883,7 +865,6 @@ bool llvm::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
// Insert all of the globals in src into the Dest module... without linking
// initializers (which could refer to functions not yet mapped over).
//
if (LinkGlobals(Dest, Src, ValueMap, AppendingVars, GlobalsByName, ErrorMsg))
return true;
@ -892,23 +873,19 @@ bool llvm::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
// 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, GlobalsByName, 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 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 (LinkFunctionBodies(Dest, Src, ValueMap, ErrorMsg)) return true;
// If there were any appending global variables, link them together now.
//
if (LinkAppendingVars(Dest, AppendingVars, ErrorMsg)) return true;
// If the source library's module id is in the dependent library list of the