LiveInterval: Add a 'covers' operation to LiveRange.

[oota-llvm.git] / include / llvm / CodeGen / LiveInterval.h

diff --git a/include/llvm/CodeGen/LiveInterval.h b/include/llvm/CodeGen/LiveInterval.h
index 9b1b65a7ae2435bf634b9e4cbc07bd2c894ccb13..a936ac64255370328d6a43e830ef7c2dae57ecf8 100644 (file)
--- a/include/llvm/CodeGen/LiveInterval.h
+++ b/include/llvm/CodeGen/LiveInterval.h
@@ -405,6 +405,12 @@ namespace llvm {
     /// scanning the Other range starting at I.
     bool overlapsFrom(const LiveRange &Other, const_iterator I) const;
 
+    /// Returns true if all segments of the @p Other live range are completely
+    /// covered by this live range.
+    /// Adjacent live ranges do not affect the covering:the liverange
+    /// [1,5](5,10] covers (3,7].
+    bool covers(const LiveRange &Other) const;
+
     /// Add the specified Segment to this range, merging segments as
     /// appropriate.  This returns an iterator to the inserted segment (which
     /// may have grown since it was inserted).