From 581ab9edecf6bcb85446ba860aac55470772d68d Mon Sep 17 00:00:00 2001
From: Ryan Houdek <Sonicadvance1@gmail.com>
Date: Sat, 29 Nov 2014 04:21:13 +0000
Subject: [PATCH] [ARM32] cntlzwx optimization if source is immediate

---
 Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp b/Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
index f4157941fa..262c145006 100644
--- a/Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
+++ b/Source/Core/Core/PowerPC/JitArm32/JitArm_Integer.cpp
@@ -723,6 +723,14 @@ void JitArm::cntlzwx(UGeckoInstruction inst)
 	JITDISABLE(bJITIntegerOff);
 	u32 a = inst.RA, s = inst.RS;
 
+	if (gpr.IsImm(s))
+	{
+		gpr.SetImmediate(a, __builtin_clz(gpr.GetImm(s)));
+		if (inst.Rc)
+			ComputeRC(gpr.GetImm(a), 0);
+		return;
+	}
+
 	gpr.BindToRegister(a, a == s);
 	ARMReg RA = gpr.R(a);
 	ARMReg RS = gpr.R(s);