commit 8250d7385a16e8d586f608b3040eb6738bbf8e55
author Evan Cheng <evan.cheng@apple.com> Tue Mar 06 02:00:52 2012 +0000
committer Evan Cheng <evan.cheng@apple.com> Tue Mar 06 02:00:52 2012 +0000
tree 7cb5904d88a6b745f65ce273a66296155177a435
parent afd3d56b9dc791d37120922318293a021bd35598

Avoid finalizeBundles infinite looping.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152089 91177308-0d34-0410-b5e6-96231b3b80d8

lib/CodeGen/MachineInstrBundle.cpp

diff --git a/lib/CodeGen/MachineInstrBundle.cpp b/lib/CodeGen/MachineInstrBundle.cpp
index d1f2df9..73489a7 100644
--- a/lib/CodeGen/MachineInstrBundle.cpp
+++ b/lib/CodeGen/MachineInstrBundle.cpp
@@ -229,6 +229,8 @@
            "First instr cannot be inside bundle before finalization!");
 
     MachineBasicBlock::instr_iterator MIE = MBB.instr_end();
+    if (MII == MIE)
+      continue;
     for (++MII; MII != MIE; ) {
       if (!MII->isInsideBundle())
         ++MII;