osd-contiki/cpu/z80/z80peephole.def
matsutsuka ebe74fed56 size-optimization option and peep-hole optimizer have been introduced.
object files have been moved to binary directory
2009-12-11 14:59:31 +00:00

183 lines
2.2 KiB
Modula-2

#
# Customized peep-hole optimizer for z80/SDCC
# @author Takahide Matsutsuka <markn@markn.org>
#
# $Id: z80peephole.def,v 1.1 2009/12/11 14:59:32 matsutsuka Exp $
#
replace {
ld hl, %1
ld (hl), #0x%2
inc hl
ld (hl), #0x%3
} by {
;; (peep) 1 short store
ld hl, #0x%3%2
ld (%1), hl
}
replace {
ld hl, %1 + 0
ld (hl), %2
ld hl, %1 + 1
ld (hl), %3
} by {
;; (peep) 2 short store
ld hl, %1
ld (hl), %2
inc hl
ld (hl), %3
}
replace {
sub a, #0x01
jr Z, %1
} by {
;; (peep) 3 decrement optimization
dec a
jr z, %1
}
replace {
sub a, #0x01
jr NZ, %1
} by {
;; (peep) 4 decrement optimization
dec a
jr nz, %1
}
replace {
sub a, #0x01
jp Z, %1
} by {
;; (peep) 5 decrement optimization
dec a
jp z, %1
}
replace {
sub a, #0x01
jp NZ, %1
} by {
;; (peep) 6 decrement optimization
dec a
jp nz, %1
}
replace {
push %1
pop iy
ld a, (iy)
or a, a
} by {
;; (peep) 7 or optimization
ld a, (%1)
or a, a
}
replace {
ld iy, %1
ld a, 0 (iy)
} by {
;; (peep) 8 iy optimization
ld a, (%1)
}
replace {
ld iy, %1
ld 0 (iy), a
} by {
;; (peep) 9 iy optimization
ld (%1), a
}
replace {
push %1
pop iy
ld (iy), %2
} by {
;; (peep) 10 iy optimization
ld a, %2
ld (%1), a
}
replace {
ld iy, %1
ld %2,0 (iy)
ld iy, %1
ld %3,1 (iy)
ld iy, %1
ld %4,2 (iy)
ld iy, %1
ld %5,3 (iy)
} by {
;; (peep) 11 iy optimization
ld iy, %1
ld %2,0 (iy)
ld %3,1 (iy)
ld %4,2 (iy)
ld %5,3 (iy)
}
replace {
ld iy, %1
ld %2,0 (iy)
ld iy, %1
ld %3,1 (iy)
} by {
;; (peep) 12 iy optimization
ld iy, %1
ld %2,0 (iy)
ld %3,1 (iy)
}
replace {
ld iy, %1
ld 0 (iy), %2
ld iy, %1
ld 1 (iy), %3
ld iy, %1
ld 2 (iy), %4
ld iy, %1
ld 3 (iy), %5
} by {
;; (peep) 13 iy optimization
ld iy, %1
ld 0 (iy), %2
ld 1 (iy), %3
ld 2 (iy), %4
ld 3 (iy), %5
}
replace {
ld iy, %1
ld 0 (iy), %2
ld iy, %1
ld 1 (iy), %3
} by {
;; (peep) 14 iy optimization
ld iy, %1
ld 0 (iy), %2
ld 1 (iy), %3
}
replace {
jp %1
%2:
} by {
;; (peep) 15 short jump optimization
jr %1
%2:
} if labelInRange
replace {
ld c,%3 (ix)
ld b,%4 (ix)
push bc
pop iy
ld 0 (iy), #0x%6
ld 1 (iy), #0x%5
} by {
;; (peep) 16 store value
ld l, %3 (ix)
ld h, %4 (ix)
ld (hl), #0x%5%6
}