X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=include%2Fllvm%2FCodeGen%2FSlotIndexes.h;h=984796af8644e6a77c93b526bc85d7718fe59c7b;hb=2c46deb1d07f4588ee70059cdd4c7145f81bc8e8;hp=1c7bdb2e586cc8e684f82d47bdfcb2c4b44bd217;hpb=c0c9205811a6957ab04ebe4a0fc84f3563b0c9da;p=oota-llvm.git

diff --git a/include/llvm/CodeGen/SlotIndexes.h b/include/llvm/CodeGen/SlotIndexes.h
index 1c7bdb2e586..984796af864 100644
--- a/include/llvm/CodeGen/SlotIndexes.h
+++ b/include/llvm/CodeGen/SlotIndexes.h
@@ -218,6 +218,13 @@ namespace llvm {
       return other.getIndex() - getIndex();
     }
 
+    /// Return the scaled distance from this index to the given one, where all
+    /// slots on the same instruction have zero distance.
+    int getInstrDistance(SlotIndex other) const {
+      return (other.listEntry()->getIndex() - listEntry()->getIndex())
+        / Slot_Count;
+    }
+
     /// isBlock - Returns true if this is a block boundary slot.
     bool isBlock() const { return getSlot() == Slot_Block; }