From 7e3268621d12c76ba2cbb6613d3e942efaec0df8 Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Fri, 24 May 2013 17:59:01 -0700
Subject: [PATCH] Optimizing the mr case.

---
 src/xenia/cpu/x64/x64_emit_alu.cc | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/xenia/cpu/x64/x64_emit_alu.cc b/src/xenia/cpu/x64/x64_emit_alu.cc
index cd14a52cc..496c8b0ec 100644
--- a/src/xenia/cpu/x64/x64_emit_alu.cc
+++ b/src/xenia/cpu/x64/x64_emit_alu.cc
@@ -742,8 +742,12 @@ XEEMITTER(orx,          0x7C000378, X  )(X64Emitter& e, X86Compiler& c, InstrDat
   // RA <- (RS) | (RB)
 
   GpVar v(c.newGpVar());
-  c.mov(v, e.gpr_value(i.X.RT));
-  c.or_(v, e.gpr_value(i.X.RB));
+  if (i.X.RT == i.X.RB) {
+    c.mov(v, e.gpr_value(i.X.RT));
+  } else {
+    c.mov(v, e.gpr_value(i.X.RT));
+    c.or_(v, e.gpr_value(i.X.RB));
+  }
   e.update_gpr_value(i.X.RA, v);
 
   if (i.X.Rc) {