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nir: Support deref instructions in gather_info

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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
2018-03-17 21:09:14 -07:00
parent 1442969ae1
commit 59b43be105
1 changed files with 22 additions and 9 deletions
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31
src/compiler/nir/nir_gather_info.c
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@@ -219,7 +219,8 @@ try_mask_partial_io(nir_shader *shader, nir_deref_var *deref, bool is_output_rea
}
static void
gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader)
gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader,
void *dead_ctx)
{
switch (instr->intrinsic) {
case nir_intrinsic_discard:
@@ -228,21 +229,32 @@ gather_intrinsic_info(nir_intrinsic_instr *instr, nir_shader *shader)
shader->info.fs.uses_discard = true;
break;
case nir_intrinsic_interp_deref_at_centroid:
case nir_intrinsic_interp_deref_at_sample:
case nir_intrinsic_interp_deref_at_offset:
case nir_intrinsic_interp_var_at_centroid:
case nir_intrinsic_interp_var_at_sample:
case nir_intrinsic_interp_var_at_offset:
case nir_intrinsic_load_deref:
case nir_intrinsic_load_var:
case nir_intrinsic_store_deref:
case nir_intrinsic_store_var: {
nir_variable *var = instr->variables[0]->var;
nir_deref_var *deref;
if (nir_intrinsic_infos[instr->intrinsic].num_variables > 0)
deref = instr->variables[0];
else
deref = nir_deref_instr_to_deref(nir_src_as_deref(instr->src[0]), dead_ctx);
nir_variable *var = deref->var;
if (var->data.mode == nir_var_shader_in ||
var->data.mode == nir_var_shader_out) {
bool is_output_read = false;
if (var->data.mode == nir_var_shader_out &&
instr->intrinsic == nir_intrinsic_load_var)
(instr->intrinsic == nir_intrinsic_load_var ||
instr->intrinsic == nir_intrinsic_load_deref))
is_output_read = true;
if (!try_mask_partial_io(shader, instr->variables[0], is_output_read))
if (!try_mask_partial_io(shader, deref, is_output_read))
mark_whole_variable(shader, var, is_output_read);
/* We need to track which input_reads bits correspond to a
@@ -330,7 +342,7 @@ gather_alu_info(nir_alu_instr *instr, nir_shader *shader)
}
static void
gather_info_block(nir_block *block, nir_shader *shader)
gather_info_block(nir_block *block, nir_shader *shader, void *dead_ctx)
{
nir_foreach_instr(instr, block) {
switch (instr->type) {
@@ -338,7 +350,7 @@ gather_info_block(nir_block *block, nir_shader *shader)
gather_alu_info(nir_instr_as_alu(instr), shader);
break;
case nir_instr_type_intrinsic:
gather_intrinsic_info(nir_instr_as_intrinsic(instr), shader);
gather_intrinsic_info(nir_instr_as_intrinsic(instr), shader, dead_ctx);
break;
case nir_instr_type_tex:
gather_tex_info(nir_instr_as_tex(instr), shader);
@@ -397,8 +409,6 @@ glsl_type_get_image_count(const struct glsl_type *type)
void
nir_shader_gather_info(nir_shader *shader, nir_function_impl *entrypoint)
{
nir_assert_lowered_derefs(shader, nir_lower_load_store_derefs | nir_lower_interp_derefs);
shader->info.num_textures = 0;
shader->info.num_images = 0;
nir_foreach_variable(var, &shader->uniforms) {
@@ -420,7 +430,10 @@ nir_shader_gather_info(nir_shader *shader, nir_function_impl *entrypoint)
if (shader->info.stage == MESA_SHADER_FRAGMENT) {
shader->info.fs.uses_sample_qualifier = false;
}
void *dead_ctx = ralloc_context(NULL);
nir_foreach_block(block, entrypoint) {
gather_info_block(block, shader);
gather_info_block(block, shader, dead_ctx);
}
ralloc_free(dead_ctx);
}