https://bugs.freedesktop.org/show_bug.cgi?id=99349
--- Comment #3 from Gert Wollny <gw.foss...@gmail.com> ---
I've had the same error output when I was playing with the Unreal Editor with
an HD6850 (BARTS) using the latest mesa-git.
In order to track it down I added some debugging to mesa and could get the
following trace that leads to the error:
r600/r600_asm.c:615
check_and_set_bank_swizzle - Couldn't find a working swizzle
drivers/r600/r600_shader.c:3975
tgsi_op2_s - Error in tgsi_op2_s, i = 3, r600_bytecode_add_alu returned -1
r600/r600_shader.c:3332
r600_shader_from_tgsi - Failed to build shader at ctx.inst_info->process,
chip class: 6, opcode: 7 result: -1
Since I added output for every "return -1" in r600/r600_asm.c I also get a lots
of other messages, but I guess that these are normal.
Debugging the code I also found that check_and_set_bank_swizzle exiting with
"Couldn't find a working swizzle" is not necessarily an error, which means that
I'm now a bit lost, because I'm not sure about how continue debugging this
problem.
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