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Clarify the state-of-the-art

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llvm-svn: 47944
This commit is contained in:
Anton Korobeynikov 2008-03-05 15:11:00 +00:00
parent dfa3472e4e
commit 0d90b4596b
1 changed files with 12 additions and 9 deletions
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21
lib/Linker/LinkModules.cpp
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@ -568,22 +568,25 @@ static bool LinkGlobals(Module *Dest, Module *Src,
// LinkAlias - Loop through the alias in the src module and link them into the
// dest module.
static bool LinkAlias(Module *Dest, const Module *Src, std::string *Err) {
// FIXME: Desptie of the name, this function currently does not 'link' stuff,
// but only copies aliases from one Module to another.
// Loop over all alias in the src module
for (Module::const_alias_iterator I = Src->alias_begin(),
E = Src->alias_end(); I != E; ++I) {
const GlobalAlias *GA = I;
GlobalValue *NewAliased = NULL;
const GlobalValue *Aliased = GA->getAliasedGlobal();
if (isa<GlobalVariable>(*Aliased))
NewAliased = Dest->getGlobalVariable(Aliased->getName());
else if (isa<Function>(*Aliased))
NewAliased = Dest->getFunction(Aliased->getName());
// FIXME: we should handle the bitcast alias.
assert(NewAliased && "Can't find the aliased GV.");
GlobalValue *NewAliasee = NULL;
const GlobalValue *Aliasee = GA->getAliasedGlobal();
if (isa<GlobalVariable>(Aliasee))
NewAliasee = Dest->getGlobalVariable(Aliasee->getName());
else if (isa<Function>(Aliasee))
NewAliasee = Dest->getFunction(Aliasee->getName());
// FIXME: we should handle the bitcasted aliasee.
assert(NewAliasee && "Can't find the aliased GV.");
GlobalAlias *NewGA = new GlobalAlias(GA->getType(), GA->getLinkage(),
GA->getName(), NewAliased, Dest);
GA->getName(), NewAliasee, Dest);
CopyGVAttributes(NewGA, GA);
}
return false;