commit dfaf0e2c0ef01a6f6fd31f2e099ab63c5a7f7cc0
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 fb53304808071e380f3bf50e8e55a5dc0443715e
parent 860cf9693a2a09d4a316deb9b829fc9e1641c16e

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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129373 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/RegAllocBasic.cpp

diff --git a/lib/CodeGen/RegAllocBasic.cpp b/lib/CodeGen/RegAllocBasic.cpp
index af7da53..dd50498 100644
--- a/lib/CodeGen/RegAllocBasic.cpp
+++ b/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);