From 6a95643edb27f5555b524b1a3a18aa51b67276f5 Mon Sep 17 00:00:00 2001
From: luigoalma <luigoalma@hotmail.com>
Date: Thu, 4 Apr 2019 00:47:36 +0100
Subject: [PATCH] Very minor optimization

It only effect happens at common misaligned memory check and fixup
Does the exact same end result, just in less 2 instructions and independent of r4 and r5, using r12 instead
---
 arm9/source/common/memcpy.s | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/arm9/source/common/memcpy.s b/arm9/source/common/memcpy.s
index 4ba4409..6a067c2 100644
--- a/arm9/source/common/memcpy.s
+++ b/arm9/source/common/memcpy.s
@@ -26,17 +26,15 @@ memcpy:
 	orr     r12, r0, r1
 	ands    r12, r12, #3
 	beq     .L1
-	and     r4, r0, #3
-	and     r5, r1, #3
-	cmp     r4, r5
+	mov     r12, r0, LSL#30
+	cmp     r12, r1, LSL#30
 	bne     .L6
-	rsb     r4, r4, #4
 .L0:
 	ldrb    r3, [r1], #1
 	strb    r3, [r0], #1
 	subs    r2, r2, #1
 	popeq   {r0,r4-r9,pc}
-	subs    r4, r4, #1
+	adds    r12, r12, #0x40000000
 	bne     .L0
 .L1:
 	@ check if length higher than 32