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[objc-arc-opts] Add comment to BBState making it clear that get{TopDown,BottomUp}PtrState will create a new PtrState object if it does not find a PtrState for Arg.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@181726 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Gottesman 2013-05-13 19:40:39 +00:00
parent 59b078fc56
commit 774a8cf2f5
1 changed files with 6 additions and 0 deletions
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6
lib/Transforms/ObjCARC/ObjCARCOpts.cpp
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@ -587,10 +587,16 @@ namespace {
/// definition.
void SetAsExit() { BottomUpPathCount = 1; }
/// Attempt to find the PtrState object describing the top down state for
/// pointer Arg. Return a new initialized PtrState describing the top down
/// state for Arg if we do not find one.
PtrState &getPtrTopDownState(const Value *Arg) {
return PerPtrTopDown[Arg];
}
/// Attempt to find the PtrState object describing the bottom up state for
/// pointer Arg. Return a new initialized PtrState describing the bottom up
/// state for Arg if we do not find one.
PtrState &getPtrBottomUpState(const Value *Arg) {
return PerPtrBottomUp[Arg];
}