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nir: move divergence analysis options to nir_shader_compiler_options

Browse source 
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
This commit is contained in:
Rhys Perry 2020-09-02 11:45:46 +01:00 • committed by Marge Bot
parent bb5c0ba0d2
commit e1120f274f
4 changed files with 24 additions and 19 deletions
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2
src/amd/compiler/aco_instruction_selection_setup.cpp
View file

@ -766,7 +766,7 @@ void init_context(isel_context *ctx, nir_shader *shader)
unsigned lane_mask_size = ctx->program->lane_mask.size();
ctx->shader = shader;
nir_divergence_analysis(shader, nir_divergence_view_index_uniform);
nir_divergence_analysis(shader);
fill_desc_set_info(ctx, impl);

1
src/amd/vulkan/radv_shader.c
View file

@ -90,6 +90,7 @@ static const struct nir_shader_compiler_options nir_options = {
nir_lower_dsqrt |
nir_lower_drsq |
nir_lower_ddiv,
.divergence_analysis_options = nir_divergence_view_index_uniform,
};
bool

3
src/compiler/nir/nir.h
View file

@ -3377,6 +3377,7 @@ typedef struct nir_shader_compiler_options {
nir_lower_int64_options lower_int64_options;
nir_lower_doubles_options lower_doubles_options;
nir_divergence_options divergence_analysis_options;
} nir_shader_compiler_options;
typedef struct nir_shader {
@ -4799,7 +4800,7 @@ bool nir_repair_ssa(nir_shader *shader);
void nir_convert_loop_to_lcssa(nir_loop *loop);
bool nir_convert_to_lcssa(nir_shader *shader, bool skip_invariants, bool skip_bool_invariants);
void nir_divergence_analysis(nir_shader *shader, nir_divergence_options options);
void nir_divergence_analysis(nir_shader *shader);
/* If phi_webs_only is true, only convert SSA values involved in phi nodes to
* registers. If false, convert all values (even those not involved in a phi

37
src/compiler/nir/nir_divergence_analysis.c
View file

@ -37,8 +37,8 @@
*/
struct divergence_state {
const nir_divergence_options options;
const gl_shader_stage stage;
nir_shader *shader;
/** current control flow state */
/* True if some loop-active invocations might take a different control-flow path.
@ -78,7 +78,7 @@ visit_alu(nir_alu_instr *instr)
}
static bool
visit_intrinsic(nir_intrinsic_instr *instr, struct divergence_state *state)
visit_intrinsic(nir_shader *shader, nir_intrinsic_instr *instr)
{
if (!nir_intrinsic_infos[instr->intrinsic].has_dest)
return false;
@ -86,8 +86,8 @@ visit_intrinsic(nir_intrinsic_instr *instr, struct divergence_state *state)
if (instr->dest.ssa.divergent)
return false;
nir_divergence_options options = state->options;
gl_shader_stage stage = state->stage;
nir_divergence_options options = shader->options->divergence_analysis_options;
gl_shader_stage stage = shader->info.stage;
bool is_divergent = false;
switch (instr->intrinsic) {
/* Intrinsics which are always uniform */
@ -524,24 +524,27 @@ nir_variable_mode_is_uniform(nir_variable_mode mode) {
}
static bool
nir_variable_is_uniform(nir_variable *var, struct divergence_state *state)
nir_variable_is_uniform(nir_shader *shader, nir_variable *var)
{
if (nir_variable_mode_is_uniform(var->data.mode))
return true;
if (state->stage == MESA_SHADER_FRAGMENT &&
(state->options & nir_divergence_single_prim_per_subgroup) &&
nir_divergence_options options = shader->options->divergence_analysis_options;
gl_shader_stage stage = shader->info.stage;
if (stage == MESA_SHADER_FRAGMENT &&
(options & nir_divergence_single_prim_per_subgroup) &&
var->data.mode == nir_var_shader_in &&
var->data.interpolation == INTERP_MODE_FLAT)
return true;
if (state->stage == MESA_SHADER_TESS_CTRL &&
(state->options & nir_divergence_single_patch_per_tcs_subgroup) &&
if (stage == MESA_SHADER_TESS_CTRL &&
(options & nir_divergence_single_patch_per_tcs_subgroup) &&
var->data.mode == nir_var_shader_out && var->data.patch)
return true;
if (state->stage == MESA_SHADER_TESS_EVAL &&
(state->options & nir_divergence_single_patch_per_tes_subgroup) &&
if (stage == MESA_SHADER_TESS_EVAL &&
(options & nir_divergence_single_patch_per_tes_subgroup) &&
var->data.mode == nir_var_shader_in && var->data.patch)
return true;
@ -549,7 +552,7 @@ nir_variable_is_uniform(nir_variable *var, struct divergence_state *state)
}
static bool
visit_deref(nir_deref_instr *deref, struct divergence_state *state)
visit_deref(nir_shader *shader, nir_deref_instr *deref)
{
if (deref->dest.ssa.divergent)
return false;
@ -557,7 +560,7 @@ visit_deref(nir_deref_instr *deref, struct divergence_state *state)
bool is_divergent = false;
switch (deref->deref_type) {
case nir_deref_type_var:
is_divergent = !nir_variable_is_uniform(deref->var, state);
is_divergent = !nir_variable_is_uniform(shader, deref->var);
break;
case nir_deref_type_array:
case nir_deref_type_ptr_as_array:
@ -629,7 +632,7 @@ visit_block(nir_block *block, struct divergence_state *state)
has_changed |= visit_alu(nir_instr_as_alu(instr));
break;
case nir_instr_type_intrinsic:
has_changed |= visit_intrinsic(nir_instr_as_intrinsic(instr), state);
has_changed |= visit_intrinsic(state->shader, nir_instr_as_intrinsic(instr));
break;
case nir_instr_type_tex:
has_changed |= visit_tex(nir_instr_as_tex(instr));
@ -641,7 +644,7 @@ visit_block(nir_block *block, struct divergence_state *state)
has_changed |= visit_ssa_undef(nir_instr_as_ssa_undef(instr));
break;
case nir_instr_type_deref:
has_changed |= visit_deref(nir_instr_as_deref(instr), state);
has_changed |= visit_deref(state->shader, nir_instr_as_deref(instr));
break;
case nir_instr_type_jump:
has_changed |= visit_jump(nir_instr_as_jump(instr), state);
@ -886,11 +889,11 @@ visit_cf_list(struct exec_list *list, struct divergence_state *state)
}
void
nir_divergence_analysis(nir_shader *shader, nir_divergence_options options)
nir_divergence_analysis(nir_shader *shader)
{
struct divergence_state state = {
.options = options,
.stage = shader->info.stage,
.shader = shader,
.divergent_loop_cf = false,
.divergent_loop_continue = false,
.divergent_loop_break = false,