Do you have any data from shader-db for this change (and the other patch)?
On 02/05/2018 06:08 AM, Samuel Pitoiset wrote:
> Similar for the 4 case.
>
> Suggested by Bas.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
> ---
> src/compiler/nir/nir_opt_algebraic.py | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/src/compiler/nir/nir_opt_algebraic.py
> b/src/compiler/nir/nir_opt_algebraic.py
> index 6dc19d9b12..b30d1df199 100644
> --- a/src/compiler/nir/nir_opt_algebraic.py
> +++ b/src/compiler/nir/nir_opt_algebraic.py
> @@ -321,6 +321,8 @@ optimizations = [
> (('~fexp2', ('fmul', ('flog2', a), b)), ('fpow', a, b),
> '!options->lower_fpow'), # 2^(lg2(a)*b) = a^b
> (('~fexp2', ('fadd', ('fmul', ('flog2', a), b), ('fmul', ('flog2', c),
> d))),
> ('~fmul', ('fpow', a, b), ('fpow', c, d)), '!options->lower_fpow'), #
> 2^(lg2(a) * b + lg2(c) + d) = a^b * c^d
> + (('~fexp2', ('fmul', ('flog2', a), 2.0)), ('fmul', a, a)),
> + (('~fexp2', ('fmul', ('flog2', a), 4.0)), ('fmul', ('fmul', a, a),
> ('fmul', a, a))),
> (('~fpow', a, 1.0), a),
> (('~fpow', a, 2.0), ('fmul', a, a)),
> (('~fpow', a, 4.0), ('fmul', ('fmul', a, a), ('fmul', a, a))),
>
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