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authorChris Lattner <sabre@nondot.org>2005-03-26 22:54:46 +0000
committerChris Lattner <sabre@nondot.org>2005-03-26 22:54:46 +0000
commita7337dc2b935589b5a1323512507d297deafdb04 (patch)
tree3c981ef885196895a05238a104220c11b9ead63f /lib/Analysis
parent5a6a9d4f0c491d6a82316730dae51981f0f23909 (diff)
Remove more long dead code: dsa doesn't provide must alias info
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20870 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Analysis')
-rw-r--r--lib/Analysis/DataStructure/DataStructureAA.cpp32
1 files changed, 0 insertions, 32 deletions
diff --git a/lib/Analysis/DataStructure/DataStructureAA.cpp b/lib/Analysis/DataStructure/DataStructureAA.cpp
index 63f0b4253ba..69bb5a698c9 100644
--- a/lib/Analysis/DataStructure/DataStructureAA.cpp
+++ b/lib/Analysis/DataStructure/DataStructureAA.cpp
@@ -56,8 +56,6 @@ namespace {
AliasResult alias(const Value *V1, unsigned V1Size,
const Value *V2, unsigned V2Size);
- void getMustAliases(Value *P, std::vector<Value*> &RetVals);
-
ModRefResult getModRefInfo(CallSite CS, Value *P, unsigned Size);
ModRefResult getModRefInfo(CallSite CS1, CallSite CS2) {
return AliasAnalysis::getModRefInfo(CS1,CS2);
@@ -245,33 +243,3 @@ DSAA::getModRefInfo(CallSite CS, Value *P, unsigned Size) {
return Result;
}
-
-
-/// getMustAliases - If there are any pointers known that must alias this
-/// pointer, return them now. This allows alias-set based alias analyses to
-/// perform a form a value numbering (which is exposed by load-vn). If an alias
-/// analysis supports this, it should ADD any must aliased pointers to the
-/// specified vector.
-///
-void DSAA::getMustAliases(Value *P, std::vector<Value*> &RetVals) {
-#if 0 // This does not correctly handle arrays!
- // Currently the only must alias information we can provide is to say that
- // something is equal to a global value. If we already have a global value,
- // don't get worked up about it.
- if (!isa<GlobalValue>(P)) {
- DSGraph *G = getGraphForValue(P);
- if (!G) G = &TD->getGlobalsGraph();
-
- // The only must alias information we can currently determine occurs when
- // the node for P is a global node with only one entry.
- DSGraph::ScalarMapTy::const_iterator I = G->getScalarMap().find(P);
- if (I != G->getScalarMap().end()) {
- DSNode *N = I->second.getNode();
- if (N->isComplete() && isSinglePhysicalObject(N))
- RetVals.push_back(N->getGlobals()[0]);
- }
- }
-#endif
- return AliasAnalysis::getMustAliases(P, RetVals);
-}
-