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When linking two modules, we should copy the alias.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37776 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lauro Ramos Venancio 2007-06-28 19:02:54 +00:00
parent ef6ba18a4c
commit 31ed0fb804
1 changed files with 28 additions and 0 deletions
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28
lib/Linker/LinkModules.cpp
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@ -561,6 +561,31 @@ static bool LinkGlobals(Module *Dest, Module *Src,
return false;
}
// 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) {
// 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.");
GlobalAlias *NewGA = new GlobalAlias(GA->getType()->getElementType(),
GA->getLinkage(), GA->getName(),
NewAliased, Dest);
CopyGVAttributes(NewGA, GA);
}
return false;
}
// LinkGlobalInits - Update the initializers in the Dest module now that all
// globals that may be referenced are in Dest.
@ -1005,6 +1030,9 @@ Linker::LinkModules(Module *Dest, Module *Src, std::string *ErrorMsg) {
// If there were any appending global variables, link them together now.
if (LinkAppendingVars(Dest, AppendingVars, ErrorMsg)) return true;
// If there were any alias, link them now.
if (LinkAlias(Dest, Src, ErrorMsg)) return true;
// If the source library's module id is in the dependent library list of the
// destination library, remove it since that module is now linked in.
sys::Path modId;