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Revert 146728 as it's causing failures on some of the external bots as well as

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internal nightly testers.  Original commit message:

By popular demand, link up types by name if they are isomorphic and one is an
autorenamed version of the other.   This makes the IR easier to read, because
we don't end up with random renamed versions of the types after LTO'ing a large
app.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@146838 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chad Rosier 2011-12-17 22:19:53 +00:00
parent 67005b311c
commit 2e6119429f
2 changed files with 0 additions and 34 deletions
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25
lib/Linker/LinkModules.cpp
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@ -543,31 +543,6 @@ void ModuleLinker::computeTypeMapping() {
TypeMap.addTypeMapping(DGV->getType(), I->getType());
}
// 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
// it had the same type, it would have been renamed to "%foo.42 = { i32 }".
// Though it isn't required for correctness, attempt to link these up to clean
// up the IR.
std::vector<StructType*> SrcStructTypes;
SrcM->findUsedStructTypes(SrcStructTypes);
for (unsigned i = 0, e = SrcStructTypes.size(); i != e; ++i) {
StructType *ST = SrcStructTypes[i];
if (!ST->hasName()) continue;
// Check to see if there is a dot in the name followed by a digit.
size_t DotPos = ST->getName().rfind('.');
if (DotPos == 0 || DotPos == StringRef::npos ||
ST->getName().back() == '.' || !isdigit(ST->getName()[DotPos+1]))
continue;
// Check to see if the destination module has a struct with the prefix name.
if (StructType *DST = DstM->getTypeByName(ST->getName().substr(0, DotPos)))
TypeMap.addTypeMapping(DST, ST);
}
// 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

9
test/Linker/link-type-names.ll
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@ -1,9 +0,0 @@
; RUN: echo "%X = type { i32 } @G2 = global %X { i32 4 }" > %t.ll
; RUN: llvm-link %s %t.ll -S | FileCheck %s
%X = type { i32 }
@G = global %X { i32 4 }
; CHECK: @G = global %X { i32 4 }
; CHECK: @G2 = global %X { i32 4 }