From 48fcced3bc51fcb6fa1ba8637199989bbcbcfe7e Mon Sep 17 00:00:00 2001
From: LegendOfDragoon <the_f1u@yahoo.com>
Date: Mon, 7 Sep 2015 12:18:28 -0700
Subject: [PATCH] Optimize ADDIU in RSP Recompiler

The second part happens in Hydro Thunder LLE audio.
---
 Source/RSP/Recompiler Ops.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Source/RSP/Recompiler Ops.c b/Source/RSP/Recompiler Ops.c
index b46b1a3e4..5b17818da 100644
--- a/Source/RSP/Recompiler Ops.c	
+++ b/Source/RSP/Recompiler Ops.c	
@@ -472,12 +472,16 @@ void Compile_ADDIU ( void ) {
 	if (RSPOpC.rt == 0) return;
 
 	if (RSPOpC.rt == RSPOpC.rs) {
-		AddConstToVariable(Immediate, &RSP_GPR[RSPOpC.rt].UW, GPR_Name(RSPOpC.rt));
+		if(Immediate != 0) {
+			AddConstToVariable(Immediate, &RSP_GPR[RSPOpC.rt].UW, GPR_Name(RSPOpC.rt));
+		}
 	} else if (RSPOpC.rs == 0) {
 		MoveConstToVariable(Immediate, &RSP_GPR[RSPOpC.rt].UW, GPR_Name(RSPOpC.rt));
 	} else {
 		MoveVariableToX86reg(&RSP_GPR[RSPOpC.rs].UW, GPR_Name(RSPOpC.rs), x86_EAX);
-		AddConstToX86Reg(x86_EAX, Immediate);
+		if(Immediate != 0) {
+			AddConstToX86Reg(x86_EAX, Immediate);
+		}
 		MoveX86regToVariable(x86_EAX, &RSP_GPR[RSPOpC.rt].UW, GPR_Name(RSPOpC.rt));
 	}
 }