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Add an AliasSetTracker::copyValue method

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llvm-svn: 16343
This commit is contained in:
Chris Lattner 2004-09-14 19:15:12 +00:00
parent b185f42ca3
commit 20b39fdfb9
1 changed files with 19 additions and 9 deletions
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28
include/llvm/Analysis/AliasSetTracker.h
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@ -221,7 +221,8 @@ private:
void removeFromTracker(AliasSetTracker &AST);
void addPointer(AliasSetTracker &AST, HashNodePair &Entry, unsigned Size);
void addPointer(AliasSetTracker &AST, HashNodePair &Entry, unsigned Size,
bool KnownMustAlias = false);
void addCallSite(CallSite CS, AliasAnalysis &AA);
void setVolatile() { Volatile = true; }
@ -286,15 +287,8 @@ public:
bool remove(Instruction *I);
void remove(AliasSet &AS);
/// deleteValue method - This method is used to remove a pointer value from
/// the AliasSetTracker entirely. It should be used when an instruction is
/// deleted from the program to update the AST. If you don't use this, you
/// would have dangling pointers to deleted instructions.
///
void deleteValue(Value *PtrVal);
/// getAliasSets - Return the alias sets that are active.
///
const ilist<AliasSet> &getAliasSets() const { return AliasSets; }
/// getAliasSetForPointer - Return the alias set that the specified pointer
@ -313,6 +307,22 @@ public:
/// this tracker.
AliasAnalysis &getAliasAnalysis() const { return AA; }
/// deleteValue method - This method is used to remove a pointer value from
/// the AliasSetTracker entirely. It should be used when an instruction is
/// deleted from the program to update the AST. If you don't use this, you
/// would have dangling pointers to deleted instructions.
///
void deleteValue(Value *PtrVal);
/// copyValue - This method should be used whenever a preexisting value in the
/// program is copied or cloned, introducing a new value. Note that it is ok
/// for clients that use this method to introduce the same value multiple
/// times: if the tracker already knows about a value, it will ignore the
/// request.
///
void copyValue(Value *From, Value *To);
typedef ilist<AliasSet>::iterator iterator;
typedef ilist<AliasSet>::const_iterator const_iterator;