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Remove a comment about an alternative approach that wouldn't

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actually work, at least as described. LLVM Metadata is not
intended to suppress LLVM IR rules, as it can be stripped at
any time.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150821 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman 2012-02-17 18:33:38 +00:00
parent 7842a741eb
commit ebad58dc58
1 changed files with 1 additions and 4 deletions
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5
lib/Analysis/BasicAliasAnalysis.cpp
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@ -977,10 +977,7 @@ BasicAliasAnalysis::aliasGEP(const GEPOperator *GEP1, uint64_t V1Size,
//
// TODO: Returning PartialAlias instead of MayAlias is a mild hack; the
// practical effect of this is protecting TBAA in the case of dynamic
// indices into arrays of unions. An alternative way to solve this would
// be to have clang emit extra metadata for unions and/or union accesses.
// A union-specific solution wouldn't handle the problem for malloc'd
// memory however.
// indices into arrays of unions or malloc'd memory.
return PartialAlias;
}