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The code that cleans up multiple, isomorphic types has a subtle error that

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manifests itself when building LLVM with LTO.
<rdar://problem/10913281>

llvm-svn: 151576
This commit is contained in:
Bill Wendling 2012-02-27 22:34:19 +00:00
parent 2a44e34fec
commit 0f3c5db06e
1 changed files with 7 additions and 3 deletions
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10
lib/Linker/LinkModules.cpp
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@ -580,7 +580,11 @@ void ModuleLinker::computeTypeMapping() {
if (GlobalValue *DGV = getLinkedToGlobal(I))
TypeMap.addTypeMapping(DGV->getType(), I->getType());
}
#if 0
// FIXME: This doesn't play well with LTO. We cannot compile LLVM with this
// enabled. <rdar://problem/10913281>.
// Incorporate types by name, scanning all the types in the source module.
// At this point, the destination module may have a type "%foo = { i32 }" for
// example. When the source module got loaded into the same LLVMContext, if
@ -610,8 +614,8 @@ void ModuleLinker::computeTypeMapping() {
if (!SrcStructTypesSet.count(DST))
TypeMap.addTypeMapping(DST, ST);
}
#endif
// Don't bother incorporating aliases, they aren't generally typed well.
// Now that we have discovered all of the type equivalences, get a body for