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Fix isDiscardableIfUnused to include available_externally linkage.

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AvailableExternally functions are discardable.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@247044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evgeniy Stepanov 2015-09-08 18:25:20 +00:00
parent 20a294ea5b
commit 242f547927
1 changed files with 2 additions and 1 deletions
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include/llvm/IR/GlobalValue.h
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@ -236,7 +236,8 @@ public:
/// Whether the definition of this global may be discarded if it is not used
/// in its compilation unit.
static bool isDiscardableIfUnused(LinkageTypes Linkage) {
return isLinkOnceLinkage(Linkage) || isLocalLinkage(Linkage);
return isLinkOnceLinkage(Linkage) || isLocalLinkage(Linkage) ||
isAvailableExternallyLinkage(Linkage);
}
/// Whether the definition of this global may be replaced by something