[Bug 58666] New: rv670 + llvm = errors.

[Bug 58666] New: rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

          Priority: medium
            Bug ID: 58666
          Assignee: dri-devel@lists.freedesktop.org
           Summary: rv670 + llvm = errors.
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: lists@andyfurniss.entadsl.com
          Hardware: x86 (IA32)
            Status: NEW
           Version: git
         Component: Drivers/DRI/R600
           Product: Mesa

I've only just tested this AGP HD3850 card with tstellar LLVM (or any llvm) as
it's been out of the PC since Feb.

Both last week and now with updated llvm/mesa gits, running anything eg. gears
will just flood -

EE r600_asm.c:122 r600_bytecode_get_num_operands - Need instruction operand
number for 0xc.

Works OK with R600_LLVM=0

This was tested with drm-fixes kernel.

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

Andreas Boll <andreas.boll.dev@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|Drivers/DRI/R600            |Drivers/Gallium/r600

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

--- Comment #1 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
Since mesa commit -

022122ee63b8a00afc23eaa347df934a79fb1d4c

r600g: use tables with ISA info v3

I can run demos without flooding errors, but most of them don't render
anything.

The ones that do render something resemble what they should look like are all
flawed/distorted eg, "textures" is almost normal but the actual textures are
repeated rather than scaled to fit the surfaces.

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

--- Comment #2 from Tom Stellard <tstellar@gmail.com> ---
Can you run one of the demos and post the output with the environment variable
R600_DUMP_SHADERS=2

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

--- Comment #3 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
Created attachment 74051
  --> https://bugs.freedesktop.org/attachment.cgi?id=74051&action=edit
R600_DUMP_SHADERS=2 ./gears &>gears-dump

R600_DUMP_SHADERS=2 ./gears which doesn't render anything, but appears to be
running OK eg. outputting sane fps stats and quitting normally with Esc.

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

--- Comment #4 from Tom Stellard <tstellar@gmail.com> ---
Created attachment 74053
  --> https://bugs.freedesktop.org/attachment.cgi?id=74053&action=edit
Possible Fix

It looks like we were telling the backend that RV670 is an R700 GPU, when it is
really an R600.  R600 chips uses a slightly different instruction encoding. 
This patch should fix it, can you test?

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

--- Comment #5 from Andy Furniss <lists@andyfurniss.entadsl.com> ---
(In reply to comment #4)
> Created attachment 74053 [details]
> Possible Fix
> 
> It looks like we were telling the backend that RV670 is an R700 GPU, when it
> is really an R600.  R600 chips uses a slightly different instruction
> encoding.  This patch should fix it, can you test?

Yes, this fixes it - demos are all OK (well at least the same as my rv790) and
a brief run of etqw worked.

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[Bug 58666] rv670 + llvm = errors.

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https://bugs.freedesktop.org/show_bug.cgi?id=58666

Tom Stellard <tstellar@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #6 from Tom Stellard <tstellar@gmail.com> ---
Fixed by commit     257006e2a4201c11ca5f800a74ac4aaf62a7bfc1

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