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update some timings

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Brooke Vibber 2025-09-16 21:29:40 -07:00
commit 6479cf530c
1 changed files with 7 additions and 7 deletions
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mandel.s
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@ -461,7 +461,7 @@ input_max:
sub 4, dest, arg1, arg2 sub 4, dest, arg1, arg2
.endmacro .endmacro
; 3 + 5 * bytes cycles ; 3 + 5 * (bytes - 1) cycles
.macro shl bytes, arg .macro shl bytes, arg
asl arg ; 3 cyc asl arg ; 3 cyc
.repeat bytes-1, i .repeat bytes-1, i
@ -469,17 +469,17 @@ input_max:
.endrepeat .endrepeat
.endmacro .endmacro
; 13 cycles ; 8 cycles
.macro shl16 arg .macro shl16 arg
shl 2, arg shl 2, arg
.endmacro .endmacro
; 18 cycles ; 13 cycles
.macro shl24 arg .macro shl24 arg
shl 3, arg shl 3, arg
.endmacro .endmacro
; 23 cycles ; 18 cycles
.macro shl32 arg .macro shl32 arg
shl 4, arg shl 4, arg
.endmacro .endmacro
@ -529,11 +529,11 @@ input_max:
neg 4, arg neg 4, arg
.endmacro .endmacro
; 11-27 + 23 * shift cycles ; 11-27 + 18 * shift cycles
; 103-119 cycles for shift=4 ; 65-81 cycles for shift=3
.macro shift_round_16 arg, shift .macro shift_round_16 arg, shift
.repeat shift .repeat shift
shl32 arg ; 23 cycles shl32 arg ; 18 cycles
.endrepeat .endrepeat
round16 arg ; 11-27 cycles round16 arg ; 11-27 cycles
.endmacro .endmacro