From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Fri, 19 Aug 2011 22:04:19 +0000 (+0000)
Subject: Add IntervalMap::const_iterator::atBegin().
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=cafe614035c8db70eb5da96dba00696db381674f;p=oota-llvm.git

Add IntervalMap::const_iterator::atBegin().

It returns true when operator--() can be called.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@138107 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/ADT/IntervalMap.h b/include/llvm/ADT/IntervalMap.h
index f28ebf3b9a5..1230e8f5fb4 100644
--- a/include/llvm/ADT/IntervalMap.h
+++ b/include/llvm/ADT/IntervalMap.h
@@ -1335,6 +1335,9 @@ public:
   /// valid - Return true if the current position is valid, false for end().
   bool valid() const { return path.valid(); }
 
+  /// atBegin - Return true if the current position is the first map entry.
+  bool atBegin() const { return path.atBegin(); }
+
   /// start - Return the beginning of the current interval.
   const KeyT &start() const { return unsafeStart(); }