From: Evan Cheng <evan.cheng@apple.com>
Date: Sun, 12 Aug 2007 01:26:19 +0000 (+0000)
Subject: No need to remove dead range from soon-to-be-dead live interval. Its val# may be... 
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=ccb36a4f1bcafdf0de8514e396a5d2acf29d3947;p=oota-llvm.git

No need to remove dead range from soon-to-be-dead live interval. Its val# may be out of whack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@41024 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/SimpleRegisterCoalescing.cpp b/lib/CodeGen/SimpleRegisterCoalescing.cpp
index 6870aff8166..e71b9d4c0f8 100644
--- a/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/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.