[llvm-commits] [llvm] r65122 - in /llvm/branches/Apple/Dib: lib/CodeGen/PreAllocSplitting.cpp test/CodeGen/X86/2009-02-20-PreAllocSplit-Crash.ll

[Bill Wendling]

Author: void
Date: Fri Feb 20 04:16:12 2009
New Revision: 65122

URL: http://llvm.org/viewvc/llvm-project?rev=65122&view=rev
Log:
Pull r65121 into Dib:



Added:
    llvm/branches/Apple/Dib/test/CodeGen/X86/2009-02-20-PreAllocSplit-Crash.ll
      - copied unchanged from r65121, llvm/trunk/test/CodeGen/X86/2009-02-20-PreAllocSplit-Crash.ll
Modified:
    llvm/branches/Apple/Dib/lib/CodeGen/PreAllocSplitting.cpp

Modified: llvm/branches/Apple/Dib/lib/CodeGen/PreAllocSplitting.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/branches/Apple/Dib/lib/CodeGen/PreAllocSplitting.cpp?rev=65122&r1=65121&r2=65122&view=diff

==============================================================================
--- llvm/branches/Apple/Dib/lib/CodeGen/PreAllocSplitting.cpp (original)
+++ llvm/branches/Apple/Dib/lib/CodeGen/PreAllocSplitting.cpp Fri Feb 20 04:16:12 2009
@@ -224,6 +224,9 @@
   if (RefsInMBB.empty() && !DefMI) {
     MachineBasicBlock::iterator MII = MBB->begin();
     MachineBasicBlock::iterator EndPt = MI;
+    
+    if (MII == EndPt) return Pt;
+    
     do {
       ++MII;
       unsigned Index = LIs->getInstructionIndex(MII);
@@ -303,6 +306,9 @@
   if (RefsInMBB.empty() && LastIdx >= EndIdx) {
     MachineBasicBlock::iterator MII = MBB->getFirstTerminator();
     MachineBasicBlock::iterator EndPt = MI;
+    
+    if (MII == EndPt) return Pt;
+    
     --MII;
     do {
       unsigned Index = LIs->getInstructionIndex(MII);