Allow LiveIntervalMap to be reused by resetting the current live interval.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113815 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SplitKit.h b/lib/CodeGen/SplitKit.h
index ddef746..b80443e 100644
--- a/lib/CodeGen/SplitKit.h
+++ b/lib/CodeGen/SplitKit.h
@@ -151,7 +151,7 @@
const LiveInterval &parentli_;
// The child interval's values are fully contained inside parentli_ values.
- LiveInterval &li_;
+ LiveInterval *li_;
typedef DenseMap<const VNInfo*, VNInfo*> ValueMap;
@@ -172,9 +172,14 @@
public:
LiveIntervalMap(LiveIntervals &lis,
- const LiveInterval &parentli,
- LiveInterval &li)
- : lis_(lis), parentli_(parentli), li_(li) {}
+ const LiveInterval &parentli)
+ : lis_(lis), parentli_(parentli), li_(0) {}
+
+ /// reset - clear all data structures and start a new live interval.
+ void reset(LiveInterval *);
+
+ /// getLI - return the current live interval.
+ LiveInterval *getLI() const { return li_; }
/// defValue - define a value in li_ from the parentli_ value VNI and Idx.
/// Idx does not have to be ParentVNI->def, but it must be contained within