Some code optimizations which I may implement in the future.

The purpose is to reduce instruction count therefore increasing execution speed

and getting additional space for custom code and data.

801538A4 lui v1, $8014

801538A8 lbu v1, $3d44(v1)

801538AC nop

801538B0 sll v0, v1, $02

801538B4 addu v0, v0, v1

801538B8 sll v0, v0, $03

801538BC addu v0, s1, v0

801538C0 addiu a0, v0, $0010 ||

801538C4 addiu v1, v0, $0018 ||

801538C8 addiu v0, v0, $0020 || reduce to 3 instructions

801538CC swc2 t4, $0000(a0) || like in code below

801538D0 swc2 t5, $0000(v1) ||

801538D4 swc2 t6, $0000(v0) ||

801538D8 sll v0, s2, $02

801538DC addu v0, v0, s2

801538E0 sll t1, v0, $04

801538E4 lui at, $8013

801538E8 addu at, at, t1

801538EC lhu v0, $d8c6(at)

801538F0 nop

801538F4 beq v0, zero, L153a8c [$80153a8c]

801538F8 sll a0, v0, $02

801538FC addu a0, a0, v0

80153900 sll a0, a0, $04

80153904 lui a3, $8014

80153908 lbu a3, $3d44(a3)

8015390C lui v1, $8013

80153910 addiu v1, v1, $d880 (=-$2780)

80153914 sll v0, a3, $02

80153918 addu v0, v0, a3

8015391C sll v0, v0, $03

80153920 addu v0, v0, v1

80153924 lw v1, $0020(t2)

80153928 addu t0, a0, v0

8015392C sw v1, $0008(t0)

80153930 lw v0, $0010(t2)

80153934 nop

80153938 sw v0, $0010(t0)

8015393C lbu a1, $0000(s0)

80153940 nop

80153944 sll a1, a1, $07

80153948 addiu a1, a1, $c040 (=-$3fc0)

8015394C sh a1, $0000(s3)

80153950 lbu a0, $0001(s0)

80153954 nop

80153958 addiu a0, a0, $ff80 (=-$80)

8015395C sll a0, a0, $07

80153960 addiu v0, a0, $ffc0 (=-$40)

80153964 sh v0, $0002(s3)

80153968 lbu v1, $0001(s0)

8015396C lui v0, $8010

80153970 lbu v0, $4000(v0)

80153974 nop

80153978 mult v1, v0

8015397C lui a2, $8010

80153980 lbu v1, $0000(s0)

80153984 ori a2, a2, $4034

80153988 sll v1, v1, $02

8015398C mflo t3

80153990 sll v0, t3, $02

80153994 addu v0, v0, a2

80153998 addu v1, v1, v0

8015399C lui at, $1f80

801539A0 sw v1, $0010(at)

801539A4 lb v0, $0000(v1)

801539A8 addiu a0, a0, $0040

801539AC sh a1, $0008(s3)

801539B0 sh a0, $000a(s3)

801539B4 sll v0, v0, $04

801539B8 subu v0, zero, v0

801539BC sh v0, $0004(s3)

801539C0 lhu v0, $0002(v1)

801539C4 lui t3, $1f80

801539C8 addiu t3, t3, $0014

801539CC sll v0, v0, $18

801539D0 sra v0, v0, $14

801539D4 subu v0, zero, v0

801539D8 sh v0, $000c(s3)

801539DC lwc2 zero, $0000(t3)

801539E0 lwc2 at, $0004(t3) ||

801539E4 lwc2 v0, $0008(t3) ||

801539E8 lwc2 v1, $000c(t3) || like here for example

801539EC lwc2 a0, $0010(t3) ||

801539F0 lwc2 a1, $0014(t3) ||

801539F4 lui a1, $00ff

801539F8 lhu v0, $0002(s0)

801539FC ori a1, a1, $ffff

80153A00 srl v0, v0, $0c

80153A04 andi v0, v0, $0002

80153A08 xori v0, v0, $0002

80153A0C addu v0, a3, v0

80153A10 sll v0, v0, $03

80153A14 addu v0, v0, s5

80153A18 lui at, $8014

80153A1C addu at, at, v0

80153A20 lw a0, $2cc4(at)

80153A24 lui v1, $ff00

80153A28 lw v0, $0000(a0)

80153A2C and a1, t0, a1

80153A30 and v0, v0, v1

80153A34 or v0, v0, a1

80153A38 sw v0, $0000(a0)

80153A3C nop

80153A40 nop

80153A44 gte_func17t0,r11r12

80153A48 addiu v1, t0, $0020

80153A4C lhu v0, $0002(s0)

80153A50 lui t3, $1f80

80153A54 addiu t3, t3, $0034

80153A58 srl v0, v0, $0c

80153A5C andi v0, v0, $0002

80153A60 xori v0, v0, $0002

80153A64 addu a3, a3, v0

80153A68 sll a3, a3, $03

80153A6C addu a3, a3, s5

80153A70 addiu v0, t0, $0018

80153A74 lui at, $8014

80153A78 addu at, at, a3

80153A7C sw t0, $2cc4(at)

80153A80 swc2 t4, $0000(v1)

80153A84 swc2 t5, $0000(v0)

80153A88 swc2 t6, $0000(t3)

L153a8c: ; 80153A8C

80153A8C lui at, $8013

80153A90 addu at, at, t1

80153A94 lhu v0, $d8ce(at)

80153A98 nop

80153A9C beq v0, zero, L153c40 [$80153c40]

80153AA0 sll a0, v0, $02

80153AA4 addu a0, a0, v0

80153AA8 sll a0, a0, $04

80153AAC lui a3, $8014

80153AB0 lbu a3, $3d44(a3)

80153AB4 lui v1, $8013

80153AB8 addiu v1, v1, $d880 (=-$2780)

80153ABC sll v0, a3, $02

80153AC0 addu v0, v0, a3

80153AC4 sll v0, v0, $03

80153AC8 addu v0, v0, v1

80153ACC lw v1, $0018(t2)

80153AD0 addu t0, a0, v0

80153AD4 sw v1, $0008(t0)

80153AD8 lw v0, $0020(t2)

80153ADC nop

80153AE0 sw v0, $0010(t0)

80153AE4 lbu a0, $0000(s0)

80153AE8 nop

80153AEC addiu a0, a0, $ff80 (=-$80)

80153AF0 sll a0, a0, $07

80153AF4 addiu v0, a0, $ffc0 (=-$40)

80153AF8 sh v0, $0000(s3)

80153AFC lbu a1, $0001(s0)

80153B00 nop

80153B04 sll a1, a1, $07

80153B08 addiu a1, a1, $c040 (=-$3fc0)

80153B0C sh a1, $0002(s3)

80153B10 lbu v0, $0001(s0)

80153B14 lui v1, $8010

80153B18 lbu v1, $4000(v1)

80153B1C addiu v0, v0, $0001

80153B20 mult v0, v1

80153B24 lui a2, $8010

80153B28 lbu v1, $0000(s0)

80153B2C ori a2, a2, $4030

80153B30 sll v1, v1, $02

80153B34 mflo t3

80153B38 sll v0, t3, $02

80153B3C addu v0, v0, a2

80153B40 addu v1, v1, v0

80153B44 lui at, $1f80

80153B48 sw v1, $0010(at)

80153B4C lb v0, $0000(v1)

80153B50 addiu a0, a0, $0040

80153B54 sh a0, $0008(s3)

80153B58 lui at, $1f80

80153B5C sh a1, $001e(at)

80153B60 sll v0, v0, $04

80153B64 subu v0, zero, v0

80153B68 sh v0, $0004(s3)

80153B6C lw v0, $0000(v1)

80153B70 lui t3, $1f80

80153B74 addiu t3, t3, $0014

80153B78 sll v0, v0, $10

80153B7C sra v0, v0, $18

80153B80 sll v0, v0, $04

80153B84 subu v0, zero, v0

80153B88 lui at, $1f80

80153B8C sh v0, $0020(at)

80153B90 lwc2 zero, $0000(t3)

80153B94 lwc2 at, $0004(t3)

80153B98 lwc2 v0, $0008(t3)

80153B9C lwc2 v1, $000c(t3)

80153BA0 lwc2 a0, $0010(t3)

80153BA4 lwc2 a1, $0014(t3)

80153BA8 lui a1, $00ff

80153BAC lhu v0, $0002(s0)

80153BB0 ori a1, a1, $ffff

80153BB4 srl v0, v0, $0b

80153BB8 andi v0, v0, $0002

80153BBC xori v0, v0, $0002

80153BC0 addu v0, a3, v0

80153BC4 sll v0, v0, $03

80153BC8 addu v0, v0, s5

80153BCC lui at, $8014

80153BD0 addu at, at, v0

80153BD4 lw a0, $2cc4(at)

80153BD8 lui v1, $ff00

80153BDC lw v0, $0000(a0)

80153BE0 and a1, t0, a1

80153BE4 and v0, v0, v1

80153BE8 or v0, v0, a1

80153BEC sw v0, $0000(a0)

80153BF0 nop

80153BF4 nop

80153BF8 gte_func17t0,r11r12

80153BFC addiu v1, t0, $0018

80153C00 lhu v0, $0002(s0)

80153C04 lui t3, $1f80

80153C08 addiu t3, t3, $0034

80153C0C srl v0, v0, $0b

80153C10 andi v0, v0, $0002

80153C14 xori v0, v0, $0002

80153C18 addu a3, a3, v0

80153C1C sll a3, a3, $03

80153C20 addu a3, a3, s5

80153C24 addiu v0, t0, $0020

80153C28 lui at, $8014

80153C2C addu at, at, a3

80153C30 sw t0, $2cc4(at)

80153C34 swc2 t4, $0000(v1)

80153C38 swc2 t5, $0000(v0)

80153C3C swc2 t6, $0000(t3)

L153c40: ; 80153C40

80153C40 lui v1, $1f80

80153C44 lw v1, $000c(v1)

80153C48 addiu fp, fp, $0001

80153C4C addiu v0, zero, $001c

80153C50 sll v1, v1, $01

80153C54 subu v0, v0, v1

80153C58 slt v0, fp, v0

80153C5C bne v0, zero, L1532d4 [$801532d4]

80153C60 addiu v0, zero, $001b

---------------------------------------------------------------

remove all marked lui insructions except first

80153580 lui t1, $8014

80153584 lbu t1, $3d44(t1)

80153588 lui v0, $1f80 ||

8015358C lw v0, $0034(v0)

80153590 sll a1, t1, $02

80153594 addu a1, a1, t1

80153598 sll a1, a1, $03

8015359C addu t0, a1, s1

801535A0 sw v0, $0008(t0)

801535A4 lui a0, $1f80 ||

801535A8 lhu a0, $0014(a0)

801535AC lui v1, $1f80 ||

801535B0 lhu v1, $0016(v1)

801535B4 lui a3, $1f80 ||

801535B8 lw a3, $0010(a3)

801535BC addiu a2, a0, $0080

801535C0 lui at, $1f80 ||

801535C4 sh a2, $001c(at)

801535C8 lui at, $1f80 ||

801535CC sh v1, $001e(at)

801535D0 lw v0, $0000(a3)

801535D4 addiu v1, v1, $0080

801535D8 lui at, $1f80 ||

801535DC sh a0, $0024(at)

801535E0 lui at, $1f80 ||

801535E4 sh v1, $0026(at)

801535E8 sll v0, v0, $10

801535EC sra v0, v0, $18

801535F0 sll v0, v0, $04

801535F4 subu v0, zero, v0

801535F8 lui at, $1f80 ||

801535FC sh v0, $0020(at)

80153600 lb v0, $0002(a3)

80153604 lui at, $1f80 ||

80153608 sh a2, $002c(at)

8015360C lui at, $1f80 ||

80153610 sh v1, $002e(at)

80153614 sll v0, v0, $04

80153618 subu v0, zero, v0

8015361C lui at, $1f80 ||

80153620 sh v0, $0028(at)

80153624 lb v0, $0003(a3)

80153628 lui t3, $1f80 ||

8015362C addiu t3, t3, $001c

80153630 sll v0, v0, $04

80153634 subu v0, zero, v0

80153638 lui at, $1f80 ||

8015363C sh v0, $0030(at)

80153640 lwc2 zero, $0000(t3)

80153644 lwc2 at, $0004(t3)

80153648 lwc2 v0, $0008(t3)

8015364C lwc2 v1, $000c(t3)

80153650 lwc2 a0, $0010(t3)

80153654 lwc2 a1, $0014(t3)

80153658 sll v0, s2, $02

8015365C addu v0, v0, s2

80153660 sll v0, v0, $04

80153664 lui v1, $8013

80153668 addiu v1, v1, $d880 (=-$2780)

8015366C addu a1, a1, v1

80153670 addu t2, v0, a1

80153674 nop

80153678 nop

8015367C gte_func17t0,r11r12

80153680 lhu v1, $0002(s0)

80153684 nop

80153688 andi v0, v1, $8000

8015368C beq v0, zero, L153750 [$80153750]

80153690 andi v0, v1, $4000

80153694 beq v0, zero, L153704 [$80153704]

80153698 sll v0, t1, $03

8015369C beq s6, zero, L1536b0 [$801536b0]

801536A0 addu v1, v0, zero

801536A4 lw t3, $0040(sp)

801536A8 nop

801536AC addu v1, v0, t3