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i965/vec4: teach CSE about exec_size, group and doubles

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v2: adapt to changes in offset()

Reviewed-by: Matt Turner <mattst88@gmail.com>
This commit is contained in:
Iago Toral Quiroga 2016-06-16 13:49:55 +02:00 • committed by Samuel Iglesias Gonsálvez
parent ca63a3ce51
commit 8f39b3668a
1 changed files with 20 additions and 7 deletions
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27
src/mesa/drivers/dri/i965/brw_vec4_cse.cpp
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@ -130,6 +130,8 @@ instructions_match(vec4_instruction *a, vec4_instruction *b)
a->dst.writemask == b->dst.writemask &&
a->force_writemask_all == b->force_writemask_all &&
a->size_written == b->size_written &&
a->exec_size == b->exec_size &&
a->group == b->group &&
operands_match(a, b);
}
@ -181,10 +183,16 @@ vec4_visitor::opt_cse_local(bblock_t *block)
regs_written(entry->generator)),
NULL), inst->dst.type);
for (unsigned i = 0; i < regs_written(entry->generator); ++i) {
const unsigned width = entry->generator->exec_size;
unsigned component_size = width * type_sz(entry->tmp.type);
unsigned num_copy_movs =
DIV_ROUND_UP(entry->generator->size_written, component_size);
for (unsigned i = 0; i < num_copy_movs; ++i) {
vec4_instruction *copy =
MOV(byte_offset(entry->generator->dst, i * REG_SIZE),
byte_offset(entry->tmp, i * REG_SIZE));
MOV(offset(entry->generator->dst, width, i),
offset(entry->tmp, width, i));
copy->exec_size = width;
copy->group = entry->generator->group;
copy->force_writemask_all =
entry->generator->force_writemask_all;
entry->generator->insert_after(block, copy);
@ -196,11 +204,16 @@ vec4_visitor::opt_cse_local(bblock_t *block)
/* dest <- temp */
if (!inst->dst.is_null()) {
assert(inst->dst.type == entry->tmp.type);
for (unsigned i = 0; i < regs_written(inst); ++i) {
const unsigned width = inst->exec_size;
unsigned component_size = width * type_sz(inst->dst.type);
unsigned num_copy_movs =
DIV_ROUND_UP(inst->size_written, component_size);
for (unsigned i = 0; i < num_copy_movs; ++i) {
vec4_instruction *copy =
MOV(byte_offset(inst->dst, i * REG_SIZE),
byte_offset(entry->tmp, i * REG_SIZE));
MOV(offset(inst->dst, width, i),
offset(entry->tmp, width, i));
copy->exec_size = inst->exec_size;
copy->group = inst->group;
copy->force_writemask_all = inst->force_writemask_all;
inst->insert_before(block, copy);
}