[PATCH] R600/SI: implement range reduction for sin/cos

[Grigori Goronzy]

On 20.06.2014 20:02, Matt Arsenault wrote:
> I think it would be better to to this with custom lowering rather than
> the instruction patterns.

Probably, this is just my first naive attempt to make a useful
contribution. I hardly know the R600 backend and/or LLVM. I guess we
should also try to skip the range reduction if it can be determined that
inputs are restricted to the allowed range.

Can you give me any pointers? And how should this be tested?

Best regards
Grigori


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