Avoid splitting an interval multiple times; avoid splitting re-materializable val# (for now).

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@58068 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 9 insertions, 0 deletions

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index d6c8a6561e..31a34a5b35 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -948,6 +948,15 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li,
   return true;
 }
 
+/// isReMaterializable - Returns true if the definition MI of the specified
+/// val# of the specified interval is re-materializable.
+bool LiveIntervals::isReMaterializable(const LiveInterval &li,
+                                       const VNInfo *ValNo, MachineInstr *MI) {
+  SmallVector<LiveInterval*, 4> Dummy1;
+  bool Dummy2;
+  return isReMaterializable(li, ValNo, MI, Dummy1, Dummy2);
+}
+
 /// isReMaterializable - Returns true if every definition of MI of every
 /// val# of the specified interval is re-materializable.
 bool LiveIntervals::isReMaterializable(const LiveInterval &li,