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Added comment to ObjCARC elaborating what is meant by the term 'Provenance' in 'Provenance Analysis'.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@173374 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman 2013-01-24 21:35:00 +00:00
parent 78e1057371
commit 7c24e61a2b
1 changed files with 6 additions and 0 deletions
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lib/Transforms/Scalar/ObjCARC.cpp
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@ -1222,6 +1222,12 @@ namespace {
/// \brief This is similar to BasicAliasAnalysis, and it uses many of the same
/// techniques, except it uses special ObjC-specific reasoning about pointer
/// relationships.
///
/// In this context ``Provenance'' is defined as the history of an object's
/// ownership. Thus ``Provenance Analysis'' is defined by using the notion of
/// an ``independent provenance source'' of a pointer to determine whether or
/// not two pointers have the same provenance source and thus could
/// potentially be related.
class ProvenanceAnalysis {
AliasAnalysis *AA;