Improve descriptions of combiner-alias-analysis and combiner-global-alias-analysis

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200087 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
index 3fa2a32e868e09ac09c9380b1557aa56c9a4b9b3..72628ef05c639bb5f12ac9a419eb3fc0f75672e9 100644 (file)
--- a/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
+++ b/lib/CodeGen/SelectionDAG/DAGCombiner.cpp
@@ -50,11 +50,11 @@ STATISTIC(SlicedLoads, "Number of load sliced");
 namespace {
   static cl::opt<bool>
     CombinerAA("combiner-alias-analysis", cl::Hidden,
-               cl::desc("Turn on alias analysis during testing"));
+               cl::desc("Enable DAG combiner alias-analysis heuristics"));
 
   static cl::opt<bool>
     CombinerGlobalAA("combiner-global-alias-analysis", cl::Hidden,
-               cl::desc("Include global information in alias analysis"));
+               cl::desc("Enable DAG combiner's use of IR alias analysis"));
 
   /// Hidden option to stress test load slicing, i.e., when this option
   /// is enabled, load slicing bypasses most of its profitability guards.