Do you have shader-db results? Did you try having only one is_used_once?
On 02/05/2018 07:07 AM, Samuel Pitoiset wrote:
> Otherwise the code size increases because the original fexp2()
> instructions can't be deleted.
>
> Signed-off-by: Samuel Pitoiset <samuel.pitoi...@gmail.com>
> ---
> src/compiler/nir/nir_opt_algebraic.py | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/src/compiler/nir/nir_opt_algebraic.py
> b/src/compiler/nir/nir_opt_algebraic.py
> index b30d1df199..d40d59b5cd 100644
> --- a/src/compiler/nir/nir_opt_algebraic.py
> +++ b/src/compiler/nir/nir_opt_algebraic.py
> @@ -336,7 +336,7 @@ optimizations = [
> (('~flog2', ('frcp', a)), ('fneg', ('flog2', a))),
> (('~flog2', ('frsq', a)), ('fmul', -0.5, ('flog2', a))),
> (('~flog2', ('fpow', a, b)), ('fmul', b, ('flog2', a))),
> - (('~fmul', ('fexp2', a), ('fexp2', b)), ('fexp2', ('fadd', a, b))),
> + (('~fmul', ('fexp2(is_used_once)', a), ('fexp2(is_used_once)', b)),
> ('fexp2', ('fadd', a, b))),
> # Division and reciprocal
> (('~fdiv', 1.0, a), ('frcp', a)),
> (('fdiv', a, b), ('fmul', a, ('frcp', b)), 'options->lower_fdiv'),
>
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