From 559d4dcc1657f4e997d34de67fe08fcbbbf8d36d Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Tue, 1 Nov 2011 00:02:31 +0000
Subject: [PATCH] Update split candidate correctly when interference cache is
 full.

No test case, spotted by inspection.

llvm-svn: 143407
---
 llvm/lib/CodeGen/RegAllocGreedy.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/llvm/lib/CodeGen/RegAllocGreedy.cpp b/llvm/lib/CodeGen/RegAllocGreedy.cpp
index f54a2c85d100..71b7f4f78524 100644
--- a/llvm/lib/CodeGen/RegAllocGreedy.cpp
+++ b/llvm/lib/CodeGen/RegAllocGreedy.cpp
@@ -1118,6 +1118,8 @@ unsigned RAGreedy::tryRegionSplit(LiveInterval &VirtReg, AllocationOrder &Order,
       }
       --NumCands;
       GlobalCand[Worst] = GlobalCand[NumCands];
+      if (BestCand == NumCands)
+        BestCand = Worst;
     }
 
     if (GlobalCand.size() <= NumCands)