From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Tue, 1 Nov 2011 00:02:31 +0000 (+0000)
Subject: Update split candidate correctly when interference cache is full.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=7bdf0060a00f04ad03d3c6f294d8db6f4951dbc2;p=oota-llvm.git

Update split candidate correctly when interference cache is full.

No test case, spotted by inspection.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@143407 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index f54a2c85d10..71b7f4f7852 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/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)