From 9e479b4391d034a80d10f15d02606bd4437564a1 Mon Sep 17 00:00:00 2001
From: "Unknown W. Brackets" <checkins@unknownbrackets.org>
Date: Wed, 20 Feb 2013 21:04:05 -0800
Subject: [PATCH] Optimize addi/addiu to just LEA when possible.

---
 Core/MIPS/x86/CompALU.cpp | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/Core/MIPS/x86/CompALU.cpp b/Core/MIPS/x86/CompALU.cpp
index a3e8c955a2..5935af9be7 100644
--- a/Core/MIPS/x86/CompALU.cpp
+++ b/Core/MIPS/x86/CompALU.cpp
@@ -78,11 +78,14 @@ namespace MIPSComp
 
 				gpr.Lock(rt, rs);
 				gpr.BindToRegister(rt, rt == rs, true);
-				if (rt != rs)
+				if (rt == rs || gpr.R(rs).IsSimpleReg())
+					LEA(32, gpr.RX(rt), MDisp(gpr.RX(rs), simm));
+				else
+				{
 					MOV(32, gpr.R(rt), gpr.R(rs));
-				if (simm != 0)
-					ADD(32, gpr.R(rt), Imm32((u32)(s32)simm));
-				// TODO: Can also do LEA if both operands happen to be in registers.
+					if (simm != 0)
+						ADD(32, gpr.R(rt), Imm32((u32)(s32)simm));
+				}
 				gpr.UnlockAll();
 			}
 			break;