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glsl: move common link time optimisation calls to linker code

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In the following patch we will move the users of this function to
this file too and make it static again.

Acked-by: Emma Anholt <emma@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16770>
This commit is contained in:
Timothy Arceri
2022-05-31 09:44:21 +10:00
committed by Marge Bot
parent 64dbc3f03a
commit a14e2733ce
3 changed files with 45 additions and 43 deletions
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39
src/compiler/glsl/gl_nir_linker.c
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@@ -117,6 +117,45 @@ gl_nir_opts(nir_shader *nir)
} while (progress);
}
void
gl_nir_link_opts(nir_shader *producer, nir_shader *consumer)
{
if (producer->options->lower_to_scalar) {
NIR_PASS_V(producer, nir_lower_io_to_scalar_early, nir_var_shader_out);
NIR_PASS_V(consumer, nir_lower_io_to_scalar_early, nir_var_shader_in);
}
nir_lower_io_arrays_to_elements(producer, consumer);
gl_nir_opts(producer);
gl_nir_opts(consumer);
if (nir_link_opt_varyings(producer, consumer))
gl_nir_opts(consumer);
NIR_PASS_V(producer, nir_remove_dead_variables, nir_var_shader_out, NULL);
NIR_PASS_V(consumer, nir_remove_dead_variables, nir_var_shader_in, NULL);
if (nir_remove_unused_varyings(producer, consumer)) {
NIR_PASS_V(producer, nir_lower_global_vars_to_local);
NIR_PASS_V(consumer, nir_lower_global_vars_to_local);
gl_nir_opts(producer);
gl_nir_opts(consumer);
/* Optimizations can cause varyings to become unused.
* nir_compact_varyings() depends on all dead varyings being removed so
* we need to call nir_remove_dead_variables() again here.
*/
NIR_PASS_V(producer, nir_remove_dead_variables, nir_var_shader_out,
NULL);
NIR_PASS_V(consumer, nir_remove_dead_variables, nir_var_shader_in,
NULL);
}
nir_link_varying_precision(producer, consumer);
}
static bool
can_remove_uniform(nir_variable *var, UNUSED void *data)
{