1 files changed, 5 insertions, 2 deletions
diff --git a/include/llvm/Analysis/MemoryDependenceAnalysis.h b/include/llvm/Analysis/MemoryDependenceAnalysis.h
index b87f886c00..47afd1b77b 100644
--- a/include/llvm/Analysis/MemoryDependenceAnalysis.h
+++ b/include/llvm/Analysis/MemoryDependenceAnalysis.h
@@ -391,14 +391,17 @@ namespace llvm {
     /// getPointerDependencyFrom - Return the instruction on which a memory
     /// location depends.  If isLoad is true, this routine ignores may-aliases
     /// with read-only operations.  If isLoad is false, this routine ignores
-    /// may-aliases with reads from read-only locations.
+    /// may-aliases with reads from read-only locations. If possible, pass
+    /// the query instruction as well; this function may take advantage of 
+    /// the metadata annotated to the query instruction to refine the result.
     ///
     /// Note that this is an uncached query, and thus may be inefficient.
     ///
     MemDepResult getPointerDependencyFrom(const AliasAnalysis::Location &Loc,
                                           bool isLoad,
                                           BasicBlock::iterator ScanIt,
-                                          BasicBlock *BB);
+                                          BasicBlock *BB,
+                                          Instruction *QueryInst = 0);
 
 
     /// getLoadLoadClobberFullWidthSize - This is a little bit of analysis that