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- Subject: Re: How to clone a table in LJ2-friendly way?
- From: Alexander Gladysh <agladysh@...>
- Date: Fri, 26 Aug 2011 20:31:44 +0400
On Fri, Aug 26, 2011 at 20:12, Alexander Gladysh <agladysh@gmail.com> wrote:
> >> On Sun, Aug 21, 2011 at 05:03, Dimiter "malkia" Stanev<malkia@gmail.com>
> >> wrote:
> >>> Here is a little bit more optimized version.
> >> <...>
> For the record, here are the reproducible luamarca benchmark results:
> $ KBENCH_INTERPRETERS=luajit2 ./run_benchmark.sh bench/tclone.lua 1e6
> Results:
> luajit2
> -------------------------------------------------------------------
> name | rel | abs s / iter = us (1e-6 s) / iter
> -------------------------------------------------------------------
> tclone5 | 1.0000 | 20.19 / 1000000 = 20.190000 us
> tclone2 | 1.1620 | 23.46 / 1000000 = 23.460000 us
> lua_nucleo | 1.3150 | 26.55 / 1000000 = 26.550000 us
> The code is here:
> https://github.com/agladysh/luamarca/blob/master/bench/tclone.lua
...But LJ2 still blacklists the tclone5() trace, so both my original
questions still stand.
The reason for that is probably this:
---- TRACE 1 abort tclone.lua:108 -- NYI: FastFunc pairs
Mike, please, any input?
Thanks,
Alexander.
luamarca$ luajit2 -jv -jdump bench.lua bench/tclone.lua tclone5 1e5
...
---- TRACE 1 start tclone.lua:96
0001 TGETV 3 1 0
0002 ISF 3
0003 JMP 4 => 0007
0007 ISNEN 2 0 ; 128
0008 JMP 3 => 0012
0012 TNEW 3 0
0013 UGET 4 1 ; pairs
0014 MOV 5 0
0015 CALL 4 4 2
0000 . FUNCC ; pairs
---- TRACE 1 abort tclone.lua:108 -- NYI: FastFunc pairs
---- TRACE 1 start tclone.lua:238
0001 UGET 0 0 ; tclone5
0002 UGET 1 1 ; DATA
0003 CALL 0 2 2
0000 . FUNCF 5 ; tclone.lua:129
0001 . UGET 1 0 ; type
0002 . MOV 2 0
0003 . CALL 1 2 2
0000 . . FUNCC ; type
0004 . ISNES 1 0 ; "table"
0005 . JMP 1 => 0011
0006 . UGET 1 1 ; impl
0007 . MOV 2 0
0008 . TNEW 3 0
0009 . KSHORT 4 1
0010 . CALLT 1 4
0000 . IFUNCF 14 ; tclone.lua:96
---- TRACE 1 abort tclone.lua:96 -- blacklisted
...
