commit 68e84581c5155b238b455bea62314d92650e3787
author Jakob Stoklund Olesen <stoklund@2pi.dk> Tue Apr 12 18:11:28 2011 +0000
committer Jakob Stoklund Olesen <stoklund@2pi.dk> Tue Apr 12 18:11:28 2011 +0000
tree 9a8f68349970d4e6a209eb59d29753d2311be95d
parent 4547a9e658d5df7ab54b7508dc77063e41346250

Fix a bug in RegAllocBase::addMBBLiveIns() where a basic block could accidentally be skipped.

llvm-svn: 129373

llvm/lib/CodeGen/RegAllocBasic.cpp

diff --git a/llvm/lib/CodeGen/RegAllocBasic.cpp b/llvm/lib/CodeGen/RegAllocBasic.cpp
index af7da53..dd50498 100644
--- a/llvm/lib/CodeGen/RegAllocBasic.cpp
+++ b/llvm/lib/CodeGen/RegAllocBasic.cpp
@@ -429,7 +429,7 @@
         if (!MBB->isLiveIn(PhysReg))
           MBB->addLiveIn(PhysReg);
       } else if (SI.start() > Stop)
-        MBB = Indexes->getMBBFromIndex(SI.start());
+        MBB = Indexes->getMBBFromIndex(SI.start().getPrevIndex());
       if (++MBB == MFE)
         break;
       tie(Start, Stop) = Indexes->getMBBRange(MBB);