Disable the main feature of 130180, the elimination of loads that are

[oota-llvm.git] / lib / Analysis / MemoryDependenceAnalysis.cpp

diff --git a/lib/Analysis/MemoryDependenceAnalysis.cpp b/lib/Analysis/MemoryDependenceAnalysis.cpp
index a412425770f7de4ba82fa42209e5373f506d1c72..5f640c01d25210e0b954e1df969878582ebb90b9 100644 (file)
--- a/lib/Analysis/MemoryDependenceAnalysis.cpp
+++ b/lib/Analysis/MemoryDependenceAnalysis.cpp
@@ -374,10 +374,16 @@ getPointerDependencyFrom(const AliasAnalysis::Location &MemLoc, bool isLoad,
         if (R == AliasAnalysis::MustAlias)
           return MemDepResult::getDef(Inst);
 
+#if 0 // FIXME: Temporarily disabled. GVN is cleverly rewriting loads
+      // in terms of clobbering loads, but since it does this by looking
+      // at the clobbering load directly, it doesn't know about any
+      // phi translation that may have happened along the way.
+
         // If we have a partial alias, then return this as a clobber for the
         // client to handle.
         if (R == AliasAnalysis::PartialAlias)
           return MemDepResult::getClobber(Inst);
+#endif
         
         // Random may-alias loads don't depend on each other without a
         // dependence.