1 files changed, 7 insertions, 0 deletions
diff --git a/utils/TableGen/CodeGenRegisters.h b/utils/TableGen/CodeGenRegisters.h
index 72b6196038..bd748ca62e 100644
--- a/utils/TableGen/CodeGenRegisters.h
+++ b/utils/TableGen/CodeGenRegisters.h
@@ -40,6 +40,7 @@ namespace llvm {
 
   public:
     const unsigned EnumValue;
+    unsigned LaneMask;
 
     CodeGenSubRegIndex(Record *R, unsigned Enum);
     CodeGenSubRegIndex(StringRef N, StringRef Nspace, unsigned Enum);
@@ -83,6 +84,9 @@ namespace llvm {
     // Return the map of composites.
     const CompMap &getComposites() const { return Composed; }
 
+    // Compute LaneMask from Composed. Return LaneMask.
+    unsigned computeLaneMask();
+
   private:
     CompMap Composed;
   };
@@ -486,6 +490,9 @@ namespace llvm {
     // Populate the Composite map from sub-register relationships.
     void computeComposites();
 
+    // Compute a lane mask for each sub-register index.
+    void computeSubRegIndexLaneMasks();
+
   public:
     CodeGenRegBank(RecordKeeper&);