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

diff --git a/lib/CodeGen/RegAllocGreedy.cpp b/lib/CodeGen/RegAllocGreedy.cpp
index 0146a276216cd8b5f57eb5a3511f08d74ffc9d49..59d4fc6180eb3edafd9dc3e2ee550232bb65fa0e 100644 (file)
--- 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();
     }