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nir: add callback to nir_remove_dead_variables()

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This allows us to do API specific checks before removing variable
without filling nir_remove_dead_variables() with API specific code.

In the following patches we will use this to support the removal
of dead uniforms in GLSL.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4797>
This commit is contained in:
Timothy Arceri
2020-05-28 10:59:28 +10:00
committed by Marge Bot
parent bc79442f3f
commit 04dbf709ed
23 changed files with 78 additions and 51 deletions
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src/broadcom/compiler/vir.c
+2 -2
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@@ -808,7 +808,7 @@ v3d_nir_lower_vs_early(struct v3d_compile *c)
&c->s->outputs, used_outputs, NULL); /* demotes to globals */
NIR_PASS_V(c->s, nir_lower_global_vars_to_local);
v3d_optimize_nir(c->s);
NIR_PASS_V(c->s, nir_remove_dead_variables, nir_var_shader_in);
NIR_PASS_V(c->s, nir_remove_dead_variables, nir_var_shader_in, NULL);
/* This must go before nir_lower_io */
if (c->vs_key->per_vertex_point_size)
@@ -839,7 +839,7 @@ v3d_nir_lower_gs_early(struct v3d_compile *c)
&c->s->outputs, used_outputs, NULL); /* demotes to globals */
NIR_PASS_V(c->s, nir_lower_global_vars_to_local);
v3d_optimize_nir(c->s);
NIR_PASS_V(c->s, nir_remove_dead_variables, nir_var_shader_in);
NIR_PASS_V(c->s, nir_remove_dead_variables, nir_var_shader_in, NULL);
/* This must go before nir_lower_io */
if (c->gs_key->per_vertex_point_size)