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nir/opt_varyings: change try_move_postdominator param to nir_instr type

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We want more instructions to be movable, like
load_deref(var, index = load_input).

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32424>
This commit is contained in:
Marek Olšák
2024-11-30 21:21:50 -05:00
committed by Marge Bot
parent 8e39e8ed4d
commit c0de78f120
1 changed files with 17 additions and 16 deletions
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33
src/compiler/nir/nir_opt_varyings.c
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@@ -3294,7 +3294,7 @@ gather_used_input_loads(nir_instr *instr,
static bool
try_move_postdominator(struct linkage_info *linkage,
struct nir_use_dominance_state *postdom_state,
nir_alu_instr *postdom,
nir_instr *postdom,
nir_def *load_def,
nir_intrinsic_instr *first_load,
nir_opt_varyings_progress *progress)
@@ -3302,14 +3302,14 @@ try_move_postdominator(struct linkage_info *linkage,
#define PRINT 0
#if PRINT
printf("Trying to move post-dom: ");
nir_print_instr(&postdom->instr, stdout);
nir_print_instr(postdom, stdout);
puts("");
#endif
/* Gather the input loads used by the post-dominator using DFS. */
nir_intrinsic_instr *loads[NUM_SCALAR_SLOTS*8];
unsigned num_loads = 0;
gather_used_input_loads(&postdom->instr, loads, &num_loads);
gather_used_input_loads(postdom, loads, &num_loads);
/* Clear the flag set by gather_used_input_loads. */
for (unsigned i = 0; i < num_loads; i++)
@@ -3343,7 +3343,7 @@ try_move_postdominator(struct linkage_info *linkage,
#if PRINT
printf("Post-dom accepted: ");
nir_print_instr(&postdom->instr, stdout);
nir_print_instr(postdom, stdout);
puts("\n");
#endif
@@ -3365,7 +3365,8 @@ try_move_postdominator(struct linkage_info *linkage,
struct scalar_slot *slot = &linkage->slot[slot_index];
nir_builder *b = &linkage->consumer_builder;
b->cursor = nir_after_instr(load_def->parent_instr);
unsigned alu_interp = postdom->instr.pass_flags & FLAG_INTERP_MASK;
nir_def *postdom_def = nir_instr_def(postdom);
unsigned alu_interp = postdom->pass_flags & FLAG_INTERP_MASK;
nir_def *new_input, *new_tes_loads[3];
BITSET_WORD *mask;
@@ -3382,13 +3383,14 @@ try_move_postdominator(struct linkage_info *linkage,
if (linkage->consumer_stage == MESA_SHADER_FRAGMENT &&
alu_interp == FLAG_INTERP_CONVERGENT &&
!linkage->can_mix_convergent_flat_with_interpolated &&
((postdom->def.bit_size != 16 && postdom->def.bit_size != 32) ||
!(nir_op_infos[postdom->op].output_type & nir_type_float)))
(postdom->type != nir_instr_type_alu ||
(postdom_def->bit_size != 16 && postdom_def->bit_size != 32) ||
!(nir_op_infos[nir_instr_as_alu(postdom)->op].output_type & nir_type_float)))
return false;
/* NIR can't do 1-bit inputs. Convert them to a bigger size. */
assert(postdom->def.bit_size & (1 | 16 | 32));
unsigned new_bit_size = postdom->def.bit_size;
assert(postdom_def->bit_size & (1 | 16 | 32));
unsigned new_bit_size = postdom_def->bit_size;
if (new_bit_size == 1) {
assert(alu_interp == FLAG_INTERP_CONVERGENT ||
@@ -3578,7 +3580,7 @@ try_move_postdominator(struct linkage_info *linkage,
}
assert(i == 3);
assert(postdom->def.bit_size != 1);
assert(postdom_def->bit_size != 1);
slot->consumer.tes_interp_load =
nir_instr_as_alu(new_input->parent_instr);
@@ -3588,18 +3590,18 @@ try_move_postdominator(struct linkage_info *linkage,
nir_instr_as_intrinsic(new_input->parent_instr);
/* The input is a bigger type even if the post-dominator is boolean. */
if (postdom->def.bit_size == 1)
if (postdom_def->bit_size == 1)
new_input = nir_ine_imm(b, new_input, 0);
}
nir_def_rewrite_uses(&postdom->def, new_input);
nir_def_rewrite_uses(postdom_def, new_input);
/* Clone the post-dominator at the end of the block in the producer
* where the output stores are.
*/
b = &linkage->producer_builder;
b->cursor = nir_after_block_before_jump(block);
nir_def *producer_clone = clone_ssa(linkage, b, &postdom->def);
nir_def *producer_clone = clone_ssa(linkage, b, postdom_def);
/* Boolean post-dominators are upcast in the producer because we can't
* use 1-bit outputs.
@@ -3652,7 +3654,7 @@ try_move_postdominator(struct linkage_info *linkage,
struct list_node, head)->instr->instr;
}
if (nir_instr_dominates_use(postdom_state, &postdom->instr, load)) {
if (nir_instr_dominates_use(postdom_state, postdom, load)) {
list_inithead(&slot->consumer.loads);
/* Remove stores. (transform feedback is allowed here, just not
@@ -3912,8 +3914,7 @@ backward_inter_shader_code_motion(struct linkage_info *linkage,
/* Add the post-dominator to the list unless it's been added already. */
if (movable_postdom &&
!(movable_postdom->pass_flags & FLAG_POST_DOMINATOR_PROCESSED)) {
if (try_move_postdominator(linkage, postdom_state,
nir_instr_as_alu(movable_postdom),
if (try_move_postdominator(linkage, postdom_state, movable_postdom,
load_def, movable_loads[i].first_load,
progress)) {
/* Moving only one postdominator can change the IR enough that