From: Evan Cheng <evan.cheng@apple.com>
Date: Fri, 17 Sep 2010 21:56:26 +0000 (+0000)
Subject: Fix a potential bug that can cause miscomparison with and without debug info.
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=f437f733484169cf67f7c3e798908bbf27175580;p=oota-llvm.git

Fix a potential bug that can cause miscomparison with and without debug info.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114220 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/MachineCSE.cpp b/lib/CodeGen/MachineCSE.cpp
index 92e2299ec62..39a50d2078f 100644
--- a/lib/CodeGen/MachineCSE.cpp
+++ b/lib/CodeGen/MachineCSE.cpp
@@ -101,7 +101,7 @@ bool MachineCSE::PerformTrivialCoalescing(MachineInstr *MI,
     unsigned Reg = MO.getReg();
     if (!Reg || TargetRegisterInfo::isPhysicalRegister(Reg))
       continue;
-    if (!MRI->hasOneUse(Reg))
+    if (!MRI->hasOneNonDBGUse(Reg))
       // Only coalesce single use copies. This ensure the copy will be
       // deleted.
       continue;