[Tarantool-patches] [PATCH v2 luajit 26/41] perf: adjust revcomp in LuaJIT-benches

[Sergey Bronnikov]

Thanks! LGTM

On 1/3/26 09:28, Sergey Kaplun wrote:
> Hi, Sergey!
> Fixed your comment.
>
> On 02.01.26, Sergey Bronnikov wrote:
>> Hi, Sergey!
>>
>> thanks for the patch! LGTM
>>
>> Sergey
>>
>> On 12/26/25 12:17, Sergey Kaplun wrote:
> <snipped>
>
>>> +  payload = function()
>>> +    local wcode = [=[
>>> +    return function(t, n)
>>> +      if n == 1 then return end
>>> +      local iubc, sub, write = iubc, string.sub, io.write
>>> +      local s = table.concat(t, "", 1, n - 1)
>>> +      for i = #s - 59, 1, -60 do
>>> +        write(]=]
>>> +    for i = 59, 3, -4 do
>>> +      wcode = wcode.."iubc[sub(s, i + "..(i - 3)..", i + "..i..")], "
>>> +    end
>>> +    wcode = wcode..[=["\n")
>>> +      end
>>> +      local r = #s % 60
>>> +      if r ~= 0 then
>>> +        for i = r, 1, -4 do write(iubc[sub(s, i - 3 < 1 and 1 or i - 3, i)]) end
>>> +        write("\n")
>>> +      end
>>> +    end
>>> +    ]=]
>> could you also apply the patch below with formatting?
>>
>> diff --git a/perf/LuaJIT-benches/revcomp.lua
>> b/perf/LuaJIT-benches/revcomp.lua
>> index 6e8a7049..9050110e 100644
>> --- a/perf/LuaJIT-benches/revcomp.lua
>> +++ b/perf/LuaJIT-benches/revcomp.lua
>> @@ -38,9 +38,9 @@bench:add({
>>          for i = #s - 59, 1, -60 do
>>            write(]=]
>>        for i = 59, 3, -4 do
>> -      wcode = wcode.."iubc[sub(s, i + "..(i - 3)..", i + "..i..")], "
>> +      wcode = wcode .. "iubc[sub(s, i + " .. (i - 3) .. ", i + " .. i
>> .. ")], "
>>        end
>> -    wcode = wcode..[=["\n")
>> +    wcode = wcode .. [=["\n")
>>          end
>>          local r = #s % 60
>>          if r ~= 0 then
>> @@ -54,7 +54,10 @@bench:add({
>>        local t, n = {}, 1
>>        for line in io.lines() do
>>          local c = sub(line, 1, 1)
>> -      if c == ">" then writerev(t, n); io.write(line, "\n"); n = 1
>> +      if c == ">" then
>> +        writerev(t, n);
>> +        io.write(line, "\n");
>> +        n = 1
>>          elseif c ~= ";" then t[n] = line; n = n + 1 end
>>        end
>>        writerev(t, n)
> Reformatted as you suggested:
>
> ===================================================================
> diff --git a/perf/LuaJIT-benches/revcomp.lua b/perf/LuaJIT-benches/revcomp.lua
> index 6e8a7049..1746334b 100644
> --- a/perf/LuaJIT-benches/revcomp.lua
> +++ b/perf/LuaJIT-benches/revcomp.lua
> @@ -18,7 +18,7 @@ iubc = setmetatable({
>     t="A", g="C", v="B", h="D", m="K", y="R", u="A",
>     N="N", S="S", W="W", n="N", s="S", w="W",
>   }, { __index = function(t, s)
> -  local r = t[sub(s, 2)]..t[sub(s, 1, 1)]; t[s] = r; return r end })
> +  local r = t[sub(s, 2)] .. t[sub(s, 1, 1)]; t[s] = r; return r end })
>   
>   local stdout = io.output()
>   
> @@ -38,9 +38,9 @@bench:add({
>         for i = #s - 59, 1, -60 do
>           write(]=]
>       for i = 59, 3, -4 do
> -      wcode = wcode.."iubc[sub(s, i + "..(i - 3)..", i + "..i..")], "
> +      wcode = wcode .. "iubc[sub(s, i + " .. (i - 3) .. ", i + " .. i .. ")], "
>       end
> -    wcode = wcode..[=["\n")
> +    wcode = wcode .. [=["\n")
>         end
>         local r = #s % 60
>         if r ~= 0 then
> @@ -54,7 +54,10 @@bench:add({
>       local t, n = {}, 1
>       for line in io.lines() do
>         local c = sub(line, 1, 1)
> -      if c == ">" then writerev(t, n); io.write(line, "\n"); n = 1
> +      if c == ">" then
> +        writerev(t, n)
> +        io.write(line, "\n")
> +        n = 1
>         elseif c ~= ";" then t[n] = line; n = n + 1 end
>       end
>       writerev(t, n)
> ===================================================================
>
>>
>>> +    local writerev = loadstring(wcode)()
>>> +
>>> +    local t, n = {}, 1
>>> +    for line in io.lines() do
>>> +      local c = sub(line, 1, 1)
>>> +      if c == ">" then writerev(t, n); io.write(line, "\n"); n = 1
>>> +      elseif c ~= ";" then t[n] = line; n = n + 1 end
>>> +    end
>>> +    writerev(t, n)
>>> +    -- Repeat operation several times.
>>> +io.stdin:seek("set", 0)
>>> +  end,
>>> +  teardown = function()
>>> +    io.output(stdout)
>>> +  end,
>>> +  -- Amount of symbols in the input file.
>>> +  items = 5e6,
>>> +})
>>>    
>>> -local t, n = {}, 1
>>> -for line in io.lines() do
>>> -  local c = sub(line, 1, 1)
>>> -  if c == ">" then writerev(t, n); io.write(line, "\n"); n = 1
>>> -  elseif c ~= ";" then t[n] = line; n = n + 1 end
>>> -end
>>> -writerev(t, n)
>>> +bench:run_and_report()
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