diff options
| -rw-r--r-- | Optimizing-assembly-code.md | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/Optimizing-assembly-code.md b/Optimizing-assembly-code.md index e2afc6f..8739c9b 100644 --- a/Optimizing-assembly-code.md +++ b/Optimizing-assembly-code.md @@ -228,11 +228,24 @@ But do: rrca ``` -Or if you really want to optimize for size over speed, then do: +Or if you really want to optimize for size over speed, then don't do: + +```asm + ; 10 bytes, 59 cycles + ld bc, 8 ; lb bc, 0, 8 +.loop + rra + rl b + dec c + jr nz, .loop + ld a, b +``` + +But do: ```asm ; 8 bytes, 50 cycles - ld b, $01 ; loop finishes once this 1 shifts to carry + ld b, 1 .loop rra rl b |