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author | Chris Lattner <sabre@nondot.org> | 2003-02-26 19:28:57 +0000 |
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committer | Chris Lattner <sabre@nondot.org> | 2003-02-26 19:28:57 +0000 |
commit | 2d0a4a4eb88ddc379755f701208dfe4bd1c15055 (patch) | |
tree | eff2a76c77fd0366eb3cad0f3c92fd076df7a79d /lib/Analysis/AliasSetTracker.cpp | |
parent | f98d8d861166a089f69267f8e3a8c261819e809e (diff) | |
download | llvm-2d0a4a4eb88ddc379755f701208dfe4bd1c15055.tar.gz llvm-2d0a4a4eb88ddc379755f701208dfe4bd1c15055.tar.bz2 llvm-2d0a4a4eb88ddc379755f701208dfe4bd1c15055.tar.xz |
Convert to work with new AliasAnalysis interface by conservatively assuming all pointers are arbitrarily large accesses
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5636 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis/AliasSetTracker.cpp')
-rw-r--r-- | lib/Analysis/AliasSetTracker.cpp | 14 |
1 files changed, 8 insertions, 6 deletions
diff --git a/lib/Analysis/AliasSetTracker.cpp b/lib/Analysis/AliasSetTracker.cpp index db704b654a..acb200481a 100644 --- a/lib/Analysis/AliasSetTracker.cpp +++ b/lib/Analysis/AliasSetTracker.cpp @@ -13,6 +13,8 @@ #include "llvm/Assembly/Writer.h" #include "llvm/Support/InstIterator.h" +// FIXME: This should keep sizes associated with pointers! + /// mergeSetIn - Merge the specified alias set into this alias set... /// void AliasSet::mergeSetIn(AliasSet &AS) { @@ -59,7 +61,7 @@ void AliasSet::addPointer(AliasSetTracker &AST, HashNodePair &Entry){ if (isMustAlias()) // Check to see if we have to downgrade to _may_ alias if (Value *V = getSomePointer()) - if (AA.alias(V, Entry.first) == AliasAnalysis::MayAlias) + if (AA.alias(V, ~0, Entry.first, ~0) == AliasAnalysis::MayAlias) AliasTy = MayAlias; Entry.second.setAliasSet(this); @@ -89,13 +91,13 @@ bool AliasSet::aliasesPointer(const Value *Ptr, AliasAnalysis &AA) const { // SOME value in the set... Value *SomePtr = getSomePointer(); assert(SomePtr && "Empty must-alias set??"); - return AA.alias(SomePtr, Ptr); + return AA.alias(SomePtr, ~0, Ptr, ~0); } // If this is a may-alias set, we have to check all of the pointers in the set // to be sure it doesn't alias the set... for (iterator I = begin(), E = end(); I != E; ++I) - if (AA.alias(Ptr, *I)) + if (AA.alias(Ptr, ~0, *I, ~0)) return true; // Check the call sites list and invoke list... @@ -119,7 +121,7 @@ bool AliasSet::aliasesCallSite(CallSite CS, AliasAnalysis &AA) const { AliasSet *AliasSetTracker::findAliasSetForPointer(const Value *Ptr) { AliasSet *FoundSet = 0; for (iterator I = begin(), E = end(); I != E; ++I) - if (I->aliasesPointer(Ptr, AA)) { + if (!I->Forward && I->aliasesPointer(Ptr, AA)) { if (FoundSet == 0) { // If this is the first alias set ptr can go into... FoundSet = I; // Remember it. } else { // Otherwise, we must merge the sets... @@ -133,10 +135,10 @@ AliasSet *AliasSetTracker::findAliasSetForPointer(const Value *Ptr) { AliasSet *AliasSetTracker::findAliasSetForCallSite(CallSite CS) { AliasSet *FoundSet = 0; for (iterator I = begin(), E = end(); I != E; ++I) - if (I->aliasesCallSite(CS, AA)) { + if (!I->Forward && I->aliasesCallSite(CS, AA)) { if (FoundSet == 0) { // If this is the first alias set ptr can go into... FoundSet = I; // Remember it. - } else { // Otherwise, we must merge the sets... + } else if (!I->Forward) { // Otherwise, we must merge the sets... FoundSet->mergeSetIn(*I); // Merge in contents... } } |