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vkd3d-shader/ir: Use iterators in struct vsir_cfg.

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And therefore on the functions that use it, namely
vsir_program_structurize() and
vsir_program_materialize_undominated_ssas_to_temps() and their callees.
This commit is contained in:
Francisco Casas
2025-09-02 02:21:25 -04:00
committed by Henri Verbeet
parent 1aa6c767ea
commit 7f4a186e6a
Notes: Henri Verbeet 2025-09-09 15:10:17 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1707
1 changed files with 44 additions and 45 deletions
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89
libs/vkd3d-shader/ir.c
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@@ -5008,8 +5008,8 @@ struct vsir_cfg
{
struct vkd3d_shader_message_context *message_context;
struct vsir_program *program;
size_t function_begin;
size_t function_end;
struct vsir_program_iterator function_begin;
struct vsir_program_iterator function_end;
struct vsir_block *blocks;
struct vsir_block *entry;
size_t block_count;
@@ -5254,10 +5254,11 @@ static void vsir_cfg_dump_structured_program(struct vsir_cfg *cfg)
}
static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program *program,
struct vkd3d_shader_message_context *message_context, struct vsir_cfg_emit_target *target,
size_t *pos)
struct vkd3d_shader_message_context *message_context,
struct vsir_cfg_emit_target *target, struct vsir_program_iterator *it)
{
struct vsir_block *current_block = NULL;
struct vkd3d_shader_instruction *ins;
enum vkd3d_result ret;
size_t i;
@@ -5266,7 +5267,7 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
cfg->program = program;
cfg->block_count = program->block_count;
cfg->target = target;
cfg->function_begin = *pos;
cfg->function_begin = *it;
vsir_block_list_init(&cfg->order);
@@ -5276,12 +5277,11 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
if (TRACE_ON())
vkd3d_string_buffer_init(&cfg->debug_buffer);
for (i = *pos; i < program->instructions.count; ++i)
for (ins = vsir_program_iterator_current(it); ins; ins = vsir_program_iterator_next(it))
{
struct vkd3d_shader_instruction *instruction = &program->instructions.elements[i];
bool finish = false;
switch (instruction->opcode)
switch (ins->opcode)
{
case VSIR_OP_PHI:
case VSIR_OP_SWITCH_MONOLITHIC:
@@ -5289,7 +5289,7 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
case VSIR_OP_LABEL:
{
unsigned int label = label_from_src_param(&instruction->src[0]);
unsigned int label = label_from_src_param(&ins->src[0]);
VKD3D_ASSERT(!current_block);
VKD3D_ASSERT(label > 0);
@@ -5298,7 +5298,8 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
VKD3D_ASSERT(current_block->label == 0);
if ((ret = vsir_block_init(current_block, label, program->block_count)) < 0)
goto fail;
current_block->begin = &program->instructions.elements[i + 1];
current_block->begin = vsir_program_iterator_next(it);
vsir_program_iterator_prev(it);
if (!cfg->entry)
cfg->entry = current_block;
break;
@@ -5307,7 +5308,7 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
case VSIR_OP_BRANCH:
case VSIR_OP_RET:
VKD3D_ASSERT(current_block);
current_block->end = instruction;
current_block->end = ins;
current_block = NULL;
break;
@@ -5326,8 +5327,7 @@ static enum vkd3d_result vsir_cfg_init(struct vsir_cfg *cfg, struct vsir_program
break;
}
*pos = i;
cfg->function_end = *pos;
cfg->function_end = *it;
for (i = 0; i < cfg->block_count; ++i)
{
@@ -6824,13 +6824,13 @@ static enum vkd3d_result vsir_cfg_emit_structured_program(struct vsir_cfg *cfg)
}
static enum vkd3d_result vsir_program_structurize_function(struct vsir_program *program,
struct vkd3d_shader_message_context *message_context, struct vsir_cfg_emit_target *target,
size_t *pos)
struct vkd3d_shader_message_context *message_context,
struct vsir_cfg_emit_target *target, struct vsir_program_iterator *it)
{
enum vkd3d_result ret;
struct vsir_cfg cfg;
if ((ret = vsir_cfg_init(&cfg, program, message_context, target, pos)) < 0)
if ((ret = vsir_cfg_init(&cfg, program, message_context, target, it)) < 0)
return ret;
vsir_cfg_compute_dominators(&cfg);
@@ -6861,10 +6861,11 @@ out:
static enum vkd3d_result vsir_program_structurize(struct vsir_program *program,
struct vsir_transformation_context *ctx)
{
struct vsir_program_iterator it = vsir_program_iterator(&program->instructions);
struct vkd3d_shader_message_context *message_context = ctx->message_context;
struct vsir_cfg_emit_target target = {0};
struct vkd3d_shader_instruction *ins;
enum vkd3d_result ret;
size_t i;
VKD3D_ASSERT(program->cf_type == VSIR_CF_BLOCKS);
@@ -6874,19 +6875,17 @@ static enum vkd3d_result vsir_program_structurize(struct vsir_program *program,
if (!reserve_instructions(&target.instructions, &target.ins_capacity, program->instructions.count))
return VKD3D_ERROR_OUT_OF_MEMORY;
for (i = 0; i < program->instructions.count;)
for (ins = vsir_program_iterator_head(&it); ins;)
{
struct vkd3d_shader_instruction *ins = &program->instructions.elements[i];
switch (ins->opcode)
{
case VSIR_OP_LABEL:
VKD3D_ASSERT(program->shader_version.type != VKD3D_SHADER_TYPE_HULL);
TRACE("Structurizing a non-hull shader.\n");
if ((ret = vsir_program_structurize_function(program, message_context,
&target, &i)) < 0)
if ((ret = vsir_program_structurize_function(program, message_context, &target, &it)) < 0)
goto fail;
VKD3D_ASSERT(i == program->instructions.count);
ins = vsir_program_iterator_current(&it);
VKD3D_ASSERT(!ins);
break;
case VSIR_OP_HS_CONTROL_POINT_PHASE:
@@ -6895,17 +6894,17 @@ static enum vkd3d_result vsir_program_structurize(struct vsir_program *program,
VKD3D_ASSERT(program->shader_version.type == VKD3D_SHADER_TYPE_HULL);
TRACE("Structurizing phase %u of a hull shader.\n", ins->opcode);
target.instructions[target.ins_count++] = *ins;
++i;
if ((ret = vsir_program_structurize_function(program, message_context,
&target, &i)) < 0)
vsir_program_iterator_next(&it);
if ((ret = vsir_program_structurize_function(program, message_context, &target, &it)) < 0)
goto fail;
ins = vsir_program_iterator_current(&it);
break;
default:
if (!reserve_instructions(&target.instructions, &target.ins_capacity, target.ins_count + 1))
return VKD3D_ERROR_OUT_OF_MEMORY;
target.instructions[target.ins_count++] = *ins;
++i;
ins = vsir_program_iterator_next(&it);
break;
}
}
@@ -6950,8 +6949,10 @@ static void register_map_undominated_use(struct vkd3d_shader_register *reg, stru
static enum vkd3d_result vsir_cfg_materialize_undominated_ssas_to_temps(struct vsir_cfg *cfg)
{
struct vsir_program *program = cfg->program;
struct vkd3d_shader_instruction *ins, *end;
struct ssas_to_temps_alloc alloc = {0};
struct vsir_block **origin_blocks;
struct vsir_program_iterator it;
unsigned int j;
size_t i;
@@ -6969,7 +6970,6 @@ static enum vkd3d_result vsir_cfg_materialize_undominated_ssas_to_temps(struct v
for (i = 0; i < cfg->block_count; ++i)
{
struct vsir_block *block = &cfg->blocks[i];
struct vkd3d_shader_instruction *ins;
if (block->label == 0)
continue;
@@ -6987,7 +6987,6 @@ static enum vkd3d_result vsir_cfg_materialize_undominated_ssas_to_temps(struct v
for (i = 0; i < cfg->block_count; ++i)
{
struct vsir_block *block = &cfg->blocks[i];
struct vkd3d_shader_instruction *ins;
if (block->label == 0)
continue;
@@ -7004,10 +7003,10 @@ static enum vkd3d_result vsir_cfg_materialize_undominated_ssas_to_temps(struct v
TRACE("Emitting temps for %u values with undominated usage.\n", alloc.next_temp_idx - program->temp_count);
for (i = cfg->function_begin; i < cfg->function_end; ++i)
it = cfg->function_begin;
end = vsir_program_iterator_current(&cfg->function_end);
for (ins = vsir_program_iterator_current(&it); ins != end; ins = vsir_program_iterator_next(&it))
{
struct vkd3d_shader_instruction *ins = &program->instructions.elements[i];
for (j = 0; j < ins->dst_count; ++j)
materialize_ssas_to_temps_process_reg(program, &alloc, &ins->dst[j].reg);
@@ -7023,14 +7022,13 @@ done:
return VKD3D_OK;
}
static enum vkd3d_result vsir_program_materialize_undominated_ssas_to_temps_in_function(
struct vsir_program *program, struct vkd3d_shader_message_context *message_context,
size_t *pos)
static enum vkd3d_result vsir_program_materialize_undominated_ssas_to_temps_in_function(struct vsir_program *program,
struct vkd3d_shader_message_context *message_context, struct vsir_program_iterator *it)
{
enum vkd3d_result ret;
struct vsir_cfg cfg;
if ((ret = vsir_cfg_init(&cfg, program, message_context, NULL, pos)) < 0)
if ((ret = vsir_cfg_init(&cfg, program, message_context, NULL, it)) < 0)
return ret;
vsir_cfg_compute_dominators(&cfg);
@@ -7045,25 +7043,25 @@ static enum vkd3d_result vsir_program_materialize_undominated_ssas_to_temps_in_f
static enum vkd3d_result vsir_program_materialize_undominated_ssas_to_temps(struct vsir_program *program,
struct vsir_transformation_context *ctx)
{
struct vsir_program_iterator it = vsir_program_iterator(&program->instructions);
struct vkd3d_shader_message_context *message_context = ctx->message_context;
struct vkd3d_shader_instruction *ins;
enum vkd3d_result ret;
size_t i;
VKD3D_ASSERT(program->cf_type == VSIR_CF_BLOCKS);
for (i = 0; i < program->instructions.count;)
for (ins = vsir_program_iterator_head(&it); ins;)
{
struct vkd3d_shader_instruction *ins = &program->instructions.elements[i];
switch (ins->opcode)
{
case VSIR_OP_LABEL:
VKD3D_ASSERT(program->shader_version.type != VKD3D_SHADER_TYPE_HULL);
TRACE("Materializing undominated SSAs in a non-hull shader.\n");
if ((ret = vsir_program_materialize_undominated_ssas_to_temps_in_function(
program, message_context, &i)) < 0)
program, message_context, &it)) < 0)
return ret;
VKD3D_ASSERT(i == program->instructions.count);
ins = vsir_program_iterator_current(&it);
VKD3D_ASSERT(!ins);
break;
case VSIR_OP_HS_CONTROL_POINT_PHASE:
@@ -7071,14 +7069,15 @@ static enum vkd3d_result vsir_program_materialize_undominated_ssas_to_temps(stru
case VSIR_OP_HS_JOIN_PHASE:
VKD3D_ASSERT(program->shader_version.type == VKD3D_SHADER_TYPE_HULL);
TRACE("Materializing undominated SSAs in phase %u of a hull shader.\n", ins->opcode);
++i;
vsir_program_iterator_next(&it);
if ((ret = vsir_program_materialize_undominated_ssas_to_temps_in_function(
program, message_context, &i)) < 0)
program, message_context, &it)) < 0)
return ret;
ins = vsir_program_iterator_current(&it);
break;
default:
++i;
ins = vsir_program_iterator_next(&it);
break;
}
}