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Reworked second use of addHL

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43 cycles saved, and no more addHL in critical loops. No bytes saved or used.
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Clanmaster21 2019-10-17 08:47:09 +01:00 committed by GitHub
parent f8ebe17eba
commit 9364ffed6d
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1 changed files with 9 additions and 3 deletions
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12
apps/zasm/symbol.asm
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@ -192,9 +192,15 @@ _symFind:
jr z, .end ; match! Z already set, IY and HL placed.
.skip:
; ok, next!
ld a, (iy) ; name len again
call addHL ; advance HL by A chars
inc iy \ inc iy \ inc iy
push de
ld de, 0x0003
add iy, de
; offset is signed, but '-' isn't supported by zasm
ld e, (iy+0xFD) ; offset is also compulsory, so no extra bytes used
add hl, de ; advance HL by (iy) characters
pop de
djnz .loop
; end of the chain, nothing found
.nothing: