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static - 素人がプログラミングを勉強していたブログ
Big Sky :: Re: static - 素人がプログラミングを勉強するブログ
ベンチは面倒なので dis 結果だけ。

[print(RegExp(n+1)) & dis(x) & print() for([n, x] in Iterator([
  function f(r)'i'in(r=/_/)?++r.i:r.i=0,
  (function g(s)function f()s++)(0),
  function (r)++(r=/_/).i||(r.i=0),
  function f(r)++f.i||(f.i=0),
  function f()f.i=f.i+1|0,
  function f()~(f.i=~-f.i),
  function()/_/.lastIndex++,
  ].map(function test(x){ if(x()!==0|x()!==1|x()!==2) throw x; return x })))]

/1/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  string "i"
00003:  regexp null
00006:  setarg 0
00009:  group
00010:  in
00011:  ifeq 23 (12)
00014:  getarg 0
00017:  incprop "i"
00020:  goto 30 (10)
00023:  getarg 0
00026:  zero
00027:  setprop "i"
00030:  return
00031:  stop

Source notes:
  0:    11 [  11] xdelta  
  1:    11 [   0] cond     offset 9
  3:    17 [   6] pcbase   offset 3
  5:    27 [  10] xdelta  
  6:    27 [   0] pcbase   offset 4

/2/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  nameinc "s"
00003:  return
00004:  stop

Source notes:

/3/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  regexp null
00003:  setarg 0
00006:  group
00007:  incprop "i"
00010:  or 21 (11)
00013:  getarg 0
00016:  zero
00017:  setprop "i"
00020:  group
00021:  return
00022:  stop

Source notes:
  0:     7 [   7] pcbase   offset 7
  2:    17 [  10] xdelta  
  3:    17 [   0] pcbase   offset 4

/4/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  name "f"
00003:  incprop "i"
00006:  or 17 (11)
00009:  name "f"
00012:  zero
00013:  setprop "i"
00016:  group
00017:  return
00018:  stop

Source notes:
  0:     3 [   3] pcbase   offset 3
  2:    13 [  10] xdelta  
  3:    13 [   0] pcbase   offset 4

/5/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  name "f"
00003:  name "f"
00006:  getprop "i"
00009:  one
00010:  add
00011:  zero
00012:  bitor
00013:  setprop "i"
00016:  return
00017:  stop

Source notes:
  0:     6 [   6] pcbase   offset 3
  2:    13 [   7] pcbase   offset 13

/6/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  name "f"
00003:  name "f"
00006:  getprop "i"
00009:  neg
00010:  bitnot
00011:  setprop "i"
00014:  group
00015:  bitnot
00016:  return
00017:  stop

Source notes:
  0:     6 [   6] pcbase   offset 3
  2:    11 [   5] pcbase   offset 11

/7/
flags: LAMBDA EXPR_CLOSURE INTERPRETED
main:
00000:  regexp null
00003:  propinc "lastIndex"
00006:  return
00007:  stop

Source notes:
  0:     3 [   3] pcbase   offset 3

ステップ数だけ見れば 2 > 7 > 5, 6 > 4 > 3 > 1 。
2 は 7 より一命令少ないけどスコープ登るからほとんど変わらないのかな。