From 040d65920624c671e1df37b44761b1314989b26a Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Tue, 28 Jun 2011 01:18:58 +0000
Subject: Fix a bad iterator dereference that Evan uncovered.

llvm-svn: 133978
---
 llvm/lib/CodeGen/SplitKit.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'llvm/lib/CodeGen/SplitKit.cpp')

diff --git a/llvm/lib/CodeGen/SplitKit.cpp b/llvm/lib/CodeGen/SplitKit.cpp
index 18f315ab20d..55b1114b5b2 100644
--- a/llvm/lib/CodeGen/SplitKit.cpp
+++ b/llvm/lib/CodeGen/SplitKit.cpp
@@ -76,12 +76,14 @@ SlotIndex SplitAnalysis::computeLastSplitPoint(unsigned Num) {
       return LSP.first;
     // There may not be a call instruction (?) in which case we ignore LPad.
     LSP.second = LSP.first;
-    for (MachineBasicBlock::const_iterator I = FirstTerm, E = MBB->begin();
-         I != E; --I)
+    for (MachineBasicBlock::const_iterator I = MBB->end(), E = MBB->begin();
+         I != E;) {
+      --I;
       if (I->getDesc().isCall()) {
         LSP.second = LIS.getInstructionIndex(I);
         break;
       }
+    }
   }
 
   // If CurLI is live into a landing pad successor, move the last split point
-- 
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