From 546017322f2b21573cad3412e52f1d0a49af714a Mon Sep 17 00:00:00 2001
From: Krzysztof Parzyszek <kparzysz@codeaurora.org>
Date: Mon, 18 Jun 2018 17:16:39 +0000
Subject: Shrink interval after moving copy in removePartialRedundancy

llvm-svn: 334963
---
 llvm/lib/CodeGen/RegisterCoalescer.cpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'llvm/lib/CodeGen')

diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp
index 20e38f2895d..50938819d0a 100644
--- a/llvm/lib/CodeGen/RegisterCoalescer.cpp
+++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp
@@ -1050,6 +1050,8 @@ bool RegisterCoalescer::removePartialRedundancy(const CoalescerPair &CP,
     BValNo->markUnused();
     LIS->extendToIndices(SR, EndPoints);
   }
+  // If any dead defs were extended, truncate them.
+  shrinkToUses(&IntB);
 
   // Finally, update the live-range of IntA.
   shrinkToUses(&IntA);
-- 
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