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vkd3d-shader/ir: Materialise SSAs to temps before lowering switch instructions.

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Conor McCarthy 2024-04-03 12:20:09 +10:00 committed by Alexandre Julliard
parent cfcd57209b
commit 7d5e3713f9
Notes: Alexandre Julliard 2024-04-09 15:44:53 -05:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/749
1 changed files with 3 additions and 93 deletions
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96
libs/vkd3d-shader/ir.c
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@ -2578,97 +2578,6 @@ static enum vkd3d_result lower_switch_to_if_ladder(struct vsir_program *program)
}
}
/* Second subpass: creating new blocks might have broken
* references in PHI instructions, so we use the block map to fix
* them. */
current_label = 0;
for (i = 0; i < ins_count; ++i)
{
struct vkd3d_shader_instruction *ins = &instructions[i];
struct vkd3d_shader_src_param *new_src;
unsigned int j, l, new_src_count = 0;
switch (ins->handler_idx)
{
case VKD3DSIH_LABEL:
current_label = label_from_src_param(&ins->src[0]);
continue;
case VKD3DSIH_PHI:
break;
default:
continue;
}
/* First count how many source parameters we need. */
for (j = 0; j < ins->src_count; j += 2)
{
unsigned int source_label = label_from_src_param(&ins->src[j + 1]);
size_t k, match_count = 0;
for (k = 0; k < map_count; ++k)
{
struct lower_switch_to_if_ladder_block_mapping *mapping = &block_map[k];
if (mapping->switch_label == source_label && mapping->target_label == current_label)
match_count += 1;
}
new_src_count += (match_count != 0) ? 2 * match_count : 2;
}
assert(new_src_count >= ins->src_count);
/* Allocate more source parameters if needed. */
if (new_src_count == ins->src_count)
{
new_src = ins->src;
}
else
{
if (!(new_src = vsir_program_get_src_params(program, new_src_count)))
{
ERR("Failed to allocate %u source parameters.\n", new_src_count);
goto fail;
}
}
/* Then do the copy. */
for (j = 0, l = 0; j < ins->src_count; j += 2)
{
unsigned int source_label = label_from_src_param(&ins->src[j + 1]);
size_t k, match_count = 0;
for (k = 0; k < map_count; ++k)
{
struct lower_switch_to_if_ladder_block_mapping *mapping = &block_map[k];
if (mapping->switch_label == source_label && mapping->target_label == current_label)
{
match_count += 1;
new_src[l] = ins->src[j];
new_src[l + 1] = ins->src[j + 1];
new_src[l + 1].reg.idx[0].offset = mapping->if_label;
l += 2;
}
}
if (match_count == 0)
{
new_src[l] = ins->src[j];
new_src[l + 1] = ins->src[j + 1];
l += 2;
}
}
assert(l == new_src_count);
ins->src_count = new_src_count;
ins->src = new_src;
}
vkd3d_free(program->instructions.elements);
vkd3d_free(block_map);
program->instructions.elements = instructions;
@ -2827,6 +2736,7 @@ static enum vkd3d_result vsir_program_materialise_phi_ssas_to_temps(struct vsir_
break;
case VKD3DSIH_BRANCH:
case VKD3DSIH_SWITCH_MONOLITHIC:
info = &block_info[current_label - 1];
for (j = 0; j < info->incoming_count; ++j)
@ -5506,10 +5416,10 @@ enum vkd3d_result vsir_program_normalise(struct vsir_program *program, uint64_t
{
struct vsir_cfg cfg;
if ((result = lower_switch_to_if_ladder(program)) < 0)
if ((result = vsir_program_materialise_phi_ssas_to_temps(program)) < 0)
return result;
if ((result = vsir_program_materialise_phi_ssas_to_temps(program)) < 0)
if ((result = lower_switch_to_if_ladder(program)) < 0)
return result;
if ((result = vsir_cfg_init(&cfg, program, message_context)) < 0)