d0p1/ack
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity

Simplify simple comparisons and use inlie constants where possible. Reduces

Browse source 
Star Trek from 39771 to 39740 bytes.
This commit is contained in:
David Given 2019-02-10 19:22:43 +01:00
parent 35d1f36ca4
commit 7d34cd7407
2 changed files with 114 additions and 56 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

168
mach/i80/ncg/table
View file

@ -135,7 +135,7 @@ INSTRUCTIONS
rst const1:ro cost(1,11).
/* rz cost(1, 8). */
sbb reg1:ro kills a:cc cost(1, 4).
/* sbi const1:ro kills a:cc cost(2, 7). */
sbi const1:ro kills a:cc cost(2, 7).
shld label:ro cost(3,16).
sphl cost(1, 5).
sta label:ro cost(3,13).
@ -1817,65 +1817,121 @@ with yields {const2,$1}
leaving bne $2
pat bra
with STACK
gen jmp {label,$1}
with STACK
gen
jmp {label,$1}
pat blt
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%2.2
sub %1.2
mov a,%2.1
sbb %1.1
jm {label,$1}
pat ble
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%1.2
sub %2.2
mov a,%1.1
sbb %2.1
jp {label,$1}
pat beq
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%2.2
cmp %1.2
jnz {label,1f}
mov a,%2.1
cmp %1.1
jz {label,$1}
1:
pat bne
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%2.2
cmp %1.2
jnz {label,$1}
mov a,%2.1
cmp %1.1
jnz {label,$1}
pat bge
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%2.2
sub %1.2
mov a,%2.1
sbb %1.1
jp {label,$1}
with const2 hl_or_de STACK
uses areg
gen
mov a, %2.2
sui {const1, %1.num & 0xff}
mov a, %2.1
sbi {const1, %1.num >> 8}
jm {label, $1}
with hl_or_de const2 STACK
uses areg
gen
mvi a, {const1, %2.num & 0xff}
sub %1.2
mvi a, {const1, %2.num >> 8}
sbb %1.1
jm {label, $1}
with hl_or_de hl_or_de STACK
uses areg
gen
mov a,%2.2
sub %1.2
mov a,%2.1
sbb %1.1
jm {label,$1}
pat bgt
with hl_or_de hl_or_de STACK
uses areg
gen mov a,%1.2
sub %2.2
mov a,%1.1
sbb %2.1
jm {label,$1}
leaving
exg 2
blt $1
pat bge
with const2 hl_or_de STACK
uses areg
gen
mov a, %2.2
sui {const1, %1.num & 0xff}
mov a, %2.1
sbi {const1, %1.num >> 8}
jp {label, $1}
with hl_or_de const2 STACK
uses areg
gen
mvi a, {const1, %2.num & 0xff}
sub %1.2
mvi a, {const1, %2.num >> 8}
sbb %1.1
jp {label, $1}
with hl_or_de hl_or_de STACK
uses areg
gen
mov a,%2.2
sub %1.2
mov a,%2.1
sbb %1.1
jp {label,$1}
pat ble
leaving
exg 2
bge $1
pat beq
with const2 hl_or_de STACK
uses areg
gen
mov a, %2.2
cpi {const1, %1.num & 0xff}
jnz {label, 1f}
mov a, %2.1
cpi {const1, %1.num >> 8}
jz {label, $1}
1:
with hl_or_de const2 STACK
leaving
exg 2
beq $1
with hl_or_de hl_or_de STACK
uses areg
gen
mov a,%2.2
cmp %1.2
jnz {label,1f}
mov a,%2.1
cmp %1.1
jz {label,$1}
1:
pat bne
with const2 hl_or_de STACK
uses areg
gen
mov a, %2.2
cpi {const1, %1.num & 0xff}
jnz {label, $1}
mov a, %2.1
cpi {const1, %1.num >> 8}
jnz {label, $1}
with hl_or_de const2 STACK
leaving
exg 2
beq $1
with hl_or_de hl_or_de STACK
uses areg
gen
mov a,%2.2
cmp %1.2
jnz {label,$1}
mov a,%2.1
cmp %1.1
jnz {label,$1}
pat zlt
with STACK

2
mach/i80/top/table
View file

@ -13,4 +13,6 @@ mvi X, Y : mov X, Z -> mov X, Z ;
xchg : inx h : xchg -> inx d ;
xchg : inx d : xchg -> inx h ;
cpi 0 -> ora a ;
%%;