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vkd3d-shader/ir: Execute PHI SSA to TEMP materialization in a single pass.

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This commit is contained in:
Giovanni Mascellani
2025-09-19 15:36:18 +02:00
committed by Henri Verbeet
parent fc84f80c96
commit f9c71d5775
Notes: Henri Verbeet 2025-09-30 17:26:34 +02:00 
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1760
1 changed files with 9 additions and 13 deletions
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22
libs/vkd3d-shader/ir.c
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@@ -4759,17 +4759,13 @@ static enum vkd3d_result vsir_program_materialise_phi_ssas_to_temps(struct vsir_
{
struct vsir_program_iterator it = vsir_program_iterator(&program->instructions);
struct ssas_to_temps_block_info *info, *block_info = NULL;
struct vkd3d_shader_instruction_array instructions;
struct vkd3d_shader_instruction *ins, *dst_ins;
struct ssas_to_temps_alloc alloc = {0};
struct vkd3d_shader_instruction *ins;
size_t phi_count, incoming_count;
unsigned int current_label = 0;
VKD3D_ASSERT(program->cf_type == VSIR_CF_BLOCKS);
if (!shader_instruction_array_init(&instructions, 0))
return VKD3D_ERROR_OUT_OF_MEMORY;
if (!(block_info = vkd3d_calloc(program->block_count, sizeof(*block_info))))
{
ERR("Failed to allocate block info array.\n");
@@ -4822,7 +4818,7 @@ static enum vkd3d_result vsir_program_materialise_phi_ssas_to_temps(struct vsir_
if (!phi_count)
goto done;
if (!shader_instruction_array_reserve(&instructions, program->instructions.count + incoming_count - phi_count))
if (!shader_instruction_array_reserve(&program->instructions, program->instructions.count + incoming_count))
goto fail;
for (ins = vsir_program_iterator_head(&it); ins; ins = vsir_program_iterator_next(&it))
@@ -4846,11 +4842,13 @@ static enum vkd3d_result vsir_program_materialise_phi_ssas_to_temps(struct vsir_
case VSIR_OP_SWITCH_MONOLITHIC:
info = &block_info[current_label - 1];
mov_ins = vsir_program_iterator_insert_before_and_move(&it, info->incoming_count);
VKD3D_ASSERT(mov_ins);
for (j = 0; j < info->incoming_count; ++j)
{
struct phi_incoming_to_temp *incoming = &info->incomings[j];
mov_ins = shader_instruction_array_append(&instructions);
if (!vsir_instruction_init_with_params(program, mov_ins, &ins->location, VSIR_OP_MOV, 1, 0))
{
vkd3d_shader_instruction_make_nop(mov_ins);
@@ -4859,21 +4857,20 @@ static enum vkd3d_result vsir_program_materialise_phi_ssas_to_temps(struct vsir_
*mov_ins->dst = *incoming->dst;
mov_ins->src = incoming->src;
mov_ins->src_count = 1;
mov_ins = vsir_program_iterator_next(&it);
}
break;
case VSIR_OP_PHI:
continue;
vkd3d_shader_instruction_make_nop(ins);
break;
default:
break;
}
dst_ins = shader_instruction_array_append(&instructions);
*dst_ins = *ins;
}
vsir_program_replace_instructions(program, &instructions);
program->temp_count = alloc.next_temp_idx;
done:
ssas_to_temps_block_info_cleanup(block_info, program->block_count);
@@ -4882,7 +4879,6 @@ done:
return VKD3D_OK;
fail:
shader_instruction_array_destroy(&instructions);
ssas_to_temps_block_info_cleanup(block_info, program->block_count);
vkd3d_free(alloc.table);