From af21e9550e36e6b8f1e7cce84fe4c75af976cd6b Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Sun, 12 Aug 2007 01:26:19 +0000
Subject: [PATCH] No need to remove dead range from soon-to-be-dead live
 interval. Its val# may be out of whack.

llvm-svn: 41024
---
 llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 6870aff81662..e71b9d4c0f81 100644
--- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -316,9 +316,9 @@ bool SimpleRegisterCoalescing::JoinCopy(MachineInstr *CopyMI,
     }
 
     if (isShorten || isDead) {
-      // Shorten the live interval.
-      LiveInterval &LiveInInt = (repSrcReg == DstInt.reg) ? DstInt : SrcInt;
-      LiveInInt.removeRange(RemoveStart, RemoveEnd);
+      // Shorten the destination live interval.
+      if (repSrcReg == DstInt.reg)
+        DstInt.removeRange(RemoveStart, RemoveEnd);
     }
   } else {
     // Coalescing failed.