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Teach the internalize pass to also internalize
global aliases. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61754 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -26,6 +26,7 @@
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#include <set>
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using namespace llvm;
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STATISTIC(NumAliases , "Number of aliases internalized");
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STATISTIC(NumFunctions, "Number of functions internalized");
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STATISTIC(NumGlobals , "Number of global vars internalized");
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@ -158,6 +159,17 @@ bool InternalizePass::runOnModule(Module &M) {
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DOUT << "Internalized gvar " << I->getName() << "\n";
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}
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// Mark all aliases that are not in the api as internal as well.
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for (Module::alias_iterator I = M.alias_begin(), E = M.alias_end();
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I != E; ++I)
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if (!I->isDeclaration() && !I->hasInternalLinkage() &&
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!ExternalNames.count(I->getName())) {
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I->setLinkage(GlobalValue::InternalLinkage);
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Changed = true;
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++NumAliases;
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DOUT << "Internalized alias " << I->getName() << "\n";
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}
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return Changed;
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}
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10
test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll
Normal file
10
test/Transforms/Internalize/2009-01-05-InternalizeAliases.ll
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@ -0,0 +1,10 @@
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; RUN: llvm-as < %s | opt -internalize | llvm-dis | grep internal | count 3
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@A = global i32 0
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@B = alias i32* @A
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@C = alias i32* @B
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define i32 @main() {
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%tmp = load i32* @C
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ret i32 %tmp
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}
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