[llvm-commits] CVS: llvm/lib/Analysis/DataStructure/DataStructureAA.cpp

[Chris Lattner]

Changes in directory llvm/lib/Analysis/DataStructure:

DataStructureAA.cpp updated: 1.8 -> 1.9

---
Log message:

Disable incorrect mustalias code


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Diffs of the changes:

Index: llvm/lib/Analysis/DataStructure/DataStructureAA.cpp
diff -u llvm/lib/Analysis/DataStructure/DataStructureAA.cpp:1.8 llvm/lib/Analysis/DataStructure/DataStructureAA.cpp:1.9
--- llvm/lib/Analysis/DataStructure/DataStructureAA.cpp:1.8	Tue Jul  1 23:39:13 2003
+++ llvm/lib/Analysis/DataStructure/DataStructureAA.cpp	Wed Jul  2 18:56:51 2003
@@ -107,6 +107,7 @@
         if (N1 != N2)
           return NoAlias;   // Completely different nodes.
 
+#if 0  // This does not correctly handle arrays!
         // Both point to the same node and same offset, and there is only one
         // physical memory object represented in the node, return must alias.
         //
@@ -115,6 +116,7 @@
 
         if (O1 == O2 && isSinglePhysicalObject(N1))
           return MustAlias; // Exactly the same object & offset
+#endif
 
         // See if they point to different offsets...  if so, we may be able to
         // determine that they do not alias...
@@ -146,6 +148,7 @@
 /// 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.
@@ -163,6 +166,6 @@
         RetVals.push_back(N->getGlobals()[0]);
     }
   }
-
+#endif
   return getAnalysis<AliasAnalysis>().getMustAliases(P, RetVals);
 }