From a5a0c7c909d9376eb2568132ac361c107a746a15 Mon Sep 17 00:00:00 2001
From: Evan Cheng <evan.cheng@apple.com>
Date: Wed, 18 Apr 2007 00:36:11 +0000
Subject: [PATCH] Increment use count of new virtuals created during PHI
 elimination.

llvm-svn: 36233
---
 llvm/lib/CodeGen/PHIElimination.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/llvm/lib/CodeGen/PHIElimination.cpp b/llvm/lib/CodeGen/PHIElimination.cpp
index 734a06fa9d21..513bfdeb256b 100644
--- a/llvm/lib/CodeGen/PHIElimination.cpp
+++ b/llvm/lib/CodeGen/PHIElimination.cpp
@@ -138,6 +138,9 @@ void PNE::LowerAtomicPHINode(MachineBasicBlock &MBB,
   if (LV) {
     MachineInstr *PHICopy = prior(AfterPHIsIt);
 
+    // Increment use count of the newly created virtual register.
+    LV->getVarInfo(IncomingReg).NumUses++;
+
     // Add information to LiveVariables to know that the incoming value is
     // killed.  Note that because the value is defined in several places (once
     // each for each incoming block), the "def" block and instruction fields
-- 
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