From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 27 Jun 2007 01:16:36 +0000 (+0000)
Subject: Fix an obvious bug. Old code only worked for the entry block.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=75611fb4e6ab253be30ac29a2b15e9bf8c1d146e;p=oota-llvm.git

Fix an obvious bug. Old code only worked for the entry block.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@37743 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp
index 34134520d65..ebab85fb480 100644
--- a/lib/CodeGen/LiveIntervalAnalysis.cpp
+++ b/lib/CodeGen/LiveIntervalAnalysis.cpp
@@ -623,10 +623,11 @@ void LiveIntervals::handleLiveInRegister(MachineBasicBlock *MBB,
   }
 
 exit:
-  // Alias of a live-in register might not be used at all.
-  if (isAlias && end == 0) {
+  // Live-in register might not be used at all.
+  if (end == MIIdx) {
     DOUT << " dead";
-    end = getDefIndex(start) + 1;
+    if (isAlias)
+      end = getDefIndex(MIIdx) + 1;
   }
 
   assert(start < end && "did not find end of interval?");