From: Chris Lattner <sabre@nondot.org>
Date: Tue, 29 Jun 2004 06:56:51 +0000 (+0000)
Subject: Do not dereference end iterators.  It hurts when you do that.
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=59850a8f8f94c59e8894edcbf8629a5d88624dc6;p=oota-llvm.git

Do not dereference end iterators.  It hurts when you do that.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@14474 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 196d6944b7e..7569875ad08 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -356,8 +356,7 @@ void LiveIntervals::handlePhysicalRegisterDef(MachineBasicBlock* mbb,
     }
 
     // a variable can only be killed by subsequent instructions
-    do {
-        ++mi;
+    for (++mi; mi != e; ++mi) {
         baseIndex += InstrSlots::NUM;
         for (KillIter ki = lv_->killed_begin(mi), ke = lv_->killed_end(mi);
              ki != ke; ++ki) {
@@ -367,7 +366,7 @@ void LiveIntervals::handlePhysicalRegisterDef(MachineBasicBlock* mbb,
                 goto exit;
             }
         }
-    } while (mi != e);
+    }
 
 exit:
     assert(start < end && "did not find end of interval?");