From 15fed3bd3063cbd164a87c2330cff0c343ac1e9f Mon Sep 17 00:00:00 2001
From: Jakob Stoklund Olesen <stoklund@2pi.dk>
Date: Tue, 6 Jul 2010 21:13:03 +0000
Subject: One more case assuming that subregs have live ranges.

llvm-svn: 107700
---
 llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

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

diff --git a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
index c450136001c..e0b9f0c10f6 100644
--- a/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
+++ b/llvm/lib/CodeGen/SimpleRegisterCoalescing.cpp
@@ -499,8 +499,8 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(const CoalescerPair &CP,
     if (BHasSubRegs) {
       for (const unsigned *SR = tri_->getSubRegisters(IntB.reg); *SR; ++SR) {
         LiveInterval &SRLI = li_->getInterval(*SR);
-        const LiveRange *SRLR = SRLI.getLiveRangeContaining(DeadVNI->def);
-        SRLI.removeValNo(SRLR->valno);
+        if (const LiveRange *SRLR = SRLI.getLiveRangeContaining(DeadVNI->def))
+          SRLI.removeValNo(SRLR->valno);
       }
     }
     IntB.removeValNo(BDeadValNos[i]);
-- 
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