From 417df0129146e299e9fd273becab824887c384e9 Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Wed, 23 Feb 2011 00:29:55 +0000
Subject: [PATCH] Fix a bug in determining if there is only a single
 interfering register.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126277 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/CodeGen/RegAllocGreedy.cpp | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 0146a276216..59d4fc6180e 100644
--- a/lib/CodeGen/RegAllocGreedy.cpp
+++ b/lib/CodeGen/RegAllocGreedy.cpp
@@ -240,8 +240,7 @@ LiveInterval *RAGreedy::getSingleInterference(LiveInterval &VirtReg,
     if (Q.checkInterference()) {
       if (Interference)
         return 0;
-      Q.collectInterferingVRegs(1);
-      if (!Q.seenAllInterferences())
+      if (Q.collectInterferingVRegs(2) > 1)
         return 0;
       Interference = Q.interferingVRegs().front();
     }
-- 
2.34.1