luajit

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39 discussions

by Stefan Pejic

Hi all, I submitted another small pull request that fixes IR_ADD/SUB. It allows them to work with 64-bit values. The issue can be reproduces with vload.lua test. The next thing that is a blocker for quite a lot of tests is asm_head_side_base. Is anyone working on that? If not, I will look into it. Thanks, Stefan

9 years, 1 month

Working on fstore

by Djordje Kovacevic

Hi, I submitted pull request which contains implementation of asm_tvptr function. Note that it isn't fully tested, since I had difficulties creating simple examples that would cover all parts of the function. Now, I'm going to work on asm_fstore function. Regards, Djordje

9 years, 1 month

test/tnew.lua throws error on arm32 and arm64

by Dikshit, Abhishek

Hi All I was trying one of the test cases in the "test" directory and it seems to fail while trying to dump the machine code both on arm32 and arm64. ./luajit -jdump=m ../test/tnew.lua ---- TRACE 1 start tnew.lua:1 ---- TRACE 1 mcode 316 VM handler failed: ./jit/dis_arm.lua:441: attempt to call upvalue 'concat' (a nil value) Am I doing something wrong ? or is this a known issue ? Test case:tnew.lua --------------------------- for i=1, 100 do table = {} end assert(type(table) == "table", "failed to create table") --------------------------- Abhishek Dikshit

9 years, 1 month

Finished upvalue load/store

by Stefan Pejic

Hi, I finished asm_fuseahuref and asm_uref and some more minor, which enabled uload and ustore tests. I will take a look at vload test. Stefan

9 years, 1 month

AArch64 Frame Layout

by Zhongwei Yao

Hi, all, I run into Segment Fault in: ====== x = 0 for i = 1, 100 do x = tostring(i) end y = "101" ====== And it turns out the JITed code overwrites native stack position at trace head. It can be walked around by set SPS_FIXED to 0. The JITed code is doing register spill and assuming there is "2 fixed spill slots" (defined by SPS_FIXED). But there seems no "fixed spill slots" in arm64 interpreter implementation. Is it true? Could anyone provide some info of aarch64 frame layout? Any input will help! Thanks. -- Best regards, Zhongwei

9 years, 1 month

Working on asm_tvptr

by Djordje Kovacevic

Hi everyone, I fixed asm_fload function and implemented asm_strref function (although asm_strref is not fully tested, yet). The next thing on my list is working on the asm_tvptr function. If someone is already working on that part, let me know. Djordje -- Đorđe Kovačević Software engineer Phone +381-(0)21-480-1207 djordje.lj.kovacevic(a)rt-rk.com RT-RK Institute for Computer Based Systems Narodnog Fronta 23a 21000 Novi Sad Serbia www.rt-rk.com

9 years, 1 month

Looking for a function to encode from number to immr, imms values for ANDS instruction

by Dikshit, Abhishek

Hi All The immr and imms values are decoded to get an immediate value. Is there a way to encode from immediate value to immr and imms field for ARMv8 ? Instruction [cid:image005.png@01D1E75A.8DE84F20] Routine. [cid:image006.png@01D1E75A.8DE84F20] The DecodeBitMasks routine is not very clear. Any help is appreciated. Abhishek Dikshit

9 years, 1 month

Looking forward to contribute.

by Dikshit, Abhishek

Hi All, I am looking forward to contribute in development of LuaJIT for ARM64. Please feel free to assign work to me even if it is a minor bug fix. Thanks Abhishek Dikshit

9 years, 1 month

Finished asm_ahustore

by Stefan Pejic

Hello all, I finished asm_ahustore and submitted a pull request. Apart from asm_ahustore, it contains some additional changes to the interpreter code, that caused me major problems. It enabled a few tests in the current test suite (array, hash and a few more), but it didn't solve everything for upvale tests, which fail because of asm_fuseahuref. I thought to take a look at unimplemented paths of asm_fuseahuref, if that's alright with everybody. Stefan

9 years, 1 month

LuaJIT tries to convert to floating point

by Dikshit, Abhishek

Hi All I am trying to make this small loop work on ARM64. ./luajit -jon -e 'x=0; for i=1,400000 do x=x+i end;' The code flow reaches the point Unimplemented: asm_conv When I looked into it, it seems that luajit is trying to convert from INT to FLOAT. Any ideas why it might be doing that ? Or is it a bug somewhere I need to look ? Thanks Abhishek Dikshit

9 years, 1 month

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