DOS ain't dead - GCC 4.6.x invalid code generation

GCC 4.6.x invalid code generation (Developers)

posted by Rugxulo , Usono, 26.04.2012, 09:06

> > I will make one more test with new gcc 4.6.2 and disabled assembler
> > modules. If it will work then we don't need be so afraid of new gcc.
>
> I got confirmed that FFMPEG compiled by GCC 4.6.2 works on AMD K6-II too.
> Even if binary contains a lot of CMOV but it's propably some dead code that
> is never called. So I'm happy that new gcc works for old machines.

I'm surprised and would still be leery of it (for older targets) personally, but at least it seems to "mostly" work for you, so that's good.

> BTW just see new GCC 4.7.0 is here
> http://ap1.pp.fi/djgpp/gcc/4.7.0/

That's unofficial, and this was a week or two before Juan's latest refresh of GDB and BinUtils, so I'd (blindly hope for) expect a newer version of latest GCC in a week or so, presumably as official on DJGPP mirrors. (But COFF debug info seems broken lately, oh well.)

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Complete thread:

DJGPP/GCC 4.6.2 invalid code generation when -march restrict - RayeR, 10.04.2012, 00:38 (Developers)
- GCC 4.6.x invalid code generation - Rugxulo, 10.04.2012, 02:01
  - GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 03:58
    - GCC 4.6.x invalid code generation - Rugxulo, 10.04.2012, 05:58
      - GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 13:44
        GCC 4.6.x invalid code generation - marcov, 10.04.2012, 16:19
        GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 17:44
        GCC 4.6.x invalid code generation - RayeR, 14.04.2012, 23:28
        GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - Arjay, 15.04.2012, 09:05
        GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - RayeR, 15.04.2012, 14:44
        GCC 4.6.x invalid code generation: MP [PATCH] configure cmov - RayeR, 26.04.2012, 01:50
        GCC 4.6.x invalid code generation - Rugxulo, 26.04.2012, 09:06
        GCC 4.6.x invalid code generation - RayeR, 28.04.2012, 02:14
        x264 0.124 update - RayeR, 01.05.2012, 17:57
        CMOVNTQ and multiple file access - DOS386, 16.06.2012, 12:53
        Multiple file access, FreeDOS file locking support - ecm, 16.06.2012, 14:31
        multiple file access / IUP 0.67 - Rugxulo, 16.06.2012, 17:48
        multiple file access / IUP 0.67 - DOS386, 17.06.2012, 09:33
        CMOVNTQ and multiple file access - RayeR, 19.06.2012, 20:38
        CMOVNTQ and multiple file access - RayeR, 21.06.2012, 04:32
        load SHARE - ecm, 21.06.2012, 05:06
        load SHARE - RayeR, 21.06.2012, 12:40
        load SHARE - ecm, 21.06.2012, 12:47
        load SHARE - RayeR, 21.06.2012, 19:58
        load SHARE - RayeR, 21.06.2012, 23:31
        load SHARE - ecm, 22.06.2012, 14:03
  - GCC 4.6.x invalid code generation - marcov, 10.04.2012, 16:16
    - GCC 4.6.x invalid code generation - RayeR, 10.04.2012, 17:49