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nir: Support deref instructions in lower_system_values

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Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Acked-by: Dave Airlie <airlied@redhat.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Jason Ekstrand
2018-03-16 22:13:00 -07:00
parent 1285cc9616
commit 61b7bef3a3
1 changed files with 13 additions and 5 deletions
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18
src/compiler/nir/nir_lower_system_values.c
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@@ -39,10 +39,15 @@ convert_block(nir_block *block, nir_builder *b)
nir_intrinsic_instr *load_var = nir_instr_as_intrinsic(instr);
if (load_var->intrinsic != nir_intrinsic_load_var)
continue;
nir_variable *var;
if (load_var->intrinsic == nir_intrinsic_load_var) {
var = load_var->variables[0]->var;
} else if (load_var->intrinsic == nir_intrinsic_load_deref) {
var = nir_deref_instr_get_variable(nir_src_as_deref(load_var->src[0]));
} else {
continue; /* Not a load instruction */
}
nir_variable *var = load_var->variables[0]->var;
if (var->data.mode != nir_var_system_value)
continue;
@@ -203,13 +208,16 @@ nir_lower_system_values(nir_shader *shader)
{
bool progress = false;
nir_assert_lowered_derefs(shader, nir_lower_load_store_derefs);
nir_foreach_function(function, shader) {
if (function->impl)
progress = convert_impl(function->impl) || progress;
}
/* We're going to delete the variables so we need to clean up all those
* derefs we left lying around.
*/
nir_remove_dead_derefs(shader);
exec_list_make_empty(&shader->system_values);
return progress;