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optimize fileioc #723

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optimize fileioc #723

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167ef3b
conditional call optimization
ZERICO2005 Feb 4, 2026
218e992
optimized ti_DeleteVar stack load
ZERICO2005 Feb 11, 2026
ce11f13
optimize ti_Detect cmp zero testing
ZERICO2005 Mar 2, 2026
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27 changes: 9 additions & 18 deletions src/fileioc/fileioc.asm
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Original file line number Diff line number Diff line change
Expand Up @@ -462,8 +462,8 @@ ti_SetArchiveStatus:
call ti.ChkFindSym
jp c, util_ret_neg_one
call ti.ChkInRam
jr z, .save_ptrs
call util_skip_archive_header
; jr z, .save_ptrs
call nz, util_skip_archive_header
.save_ptrs:
push hl
call util_get_vat_ptr
Expand Down Expand Up @@ -783,13 +783,9 @@ ti_DeleteVar:
; sp + 6 : variable type
; return:
; hl = 0 if failure
pop hl
pop de
pop bc
push bc
push de
push hl
ld a, c
ld hl, 6
add hl, sp
ld a, (hl)
; jr ti_Delete.start ; emulated by dummifying next instruction:
db $fe ; ld a, ti.AppVarObj -> cp a, $3E \ dec d
assert ti.AppVarObj = $15
Expand Down Expand Up @@ -948,24 +944,19 @@ ti_Detect:
ld (.smc_flag), a
push ix
ld ix, 0
lea bc, ix + 0
add ix, sp
ld hl, (ix + 9)
add hl, bc
or a, a
sbc hl, bc
adc hl, bc
jr nz, .detectall ; if null, then detect everything
ld hl, .fdetectall
ld (ix + 9), hl
.detectall:
ld hl, (ix + 6)
add hl, bc
or a, a
sbc hl, bc
adc hl, bc
jr z, .fstart
ld hl, (hl)
add hl, bc
or a, a
sbc hl, bc
adc hl, bc
jr nz, .fdetect
.fstart:
ld hl, (ti.progPtr)
Expand Down
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