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update cycle count for imul16

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Brooke Vibber 2023-01-04 20:37:16 -08:00
commit efd722eeb2
2 changed files with 6 additions and 6 deletions
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mandel.s
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@ -92,8 +92,8 @@ next:
positive:
.endmacro
; min 454 cycles
; max 756 cycles
; min 470 cycles
; max 780 cycles
.proc imul16
arg1 = FR0 ; 16-bit arg (clobbered)
arg2 = FR1 ; 16-bit arg (clobbered)
@ -112,10 +112,10 @@ positive:
; unrolled loop for maximum speed, at the cost
; of a larger routine
; 424 to 672 cycles
; 440 to 696 cycles
.repeat 16, bitnum
; first half: 22 to 40 cycles
; second half: 29 to 47 cycles
; bitnum < 8: 25 or 41 cycles
; bitnum >= 8: 30 or 46 cycles
bitmul16 arg1, arg2, result, bitnum
.endrepeat