fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-04 20:38:06 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 2

vc4: Eliminate unused texture instructions.

Browse source
This commit is contained in:
Eric Anholt 2014-10-09 14:42:14 +02:00
parent b73cab6826
commit 40748cf8d9
1 changed files with 21 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
src/gallium/drivers/vc4/vc4_opt_dead_code.c
View file

@ -52,6 +52,8 @@ qir_opt_dead_code(struct vc4_compile *c)
bool progress = false;
bool *used = calloc(c->num_temps, sizeof(bool));
bool sf_used = false;
/* Whether we're eliminating texture setup currently. */
bool dce_tex = false;
struct simple_node *node, *t;
for (node = c->instructions.prev, t = node->prev;
@ -61,7 +63,13 @@ qir_opt_dead_code(struct vc4_compile *c)
if (inst->dst.file == QFILE_TEMP &&
!used[inst->dst.index] &&
!qir_has_side_effects(inst)) {
(!qir_has_side_effects(inst) ||
inst->op == QOP_TEX_RESULT)) {
if (inst->op == QOP_TEX_RESULT) {
dce_tex = true;
c->num_texture_samples--;
}
dce(c, inst);
progress = true;
continue;
@ -78,6 +86,18 @@ qir_opt_dead_code(struct vc4_compile *c)
sf_used = false;
}
if (inst->op == QOP_TEX_RESULT)
dce_tex = false;
if (dce_tex && (inst->op == QOP_TEX_S ||
inst->op == QOP_TEX_T ||
inst->op == QOP_TEX_R ||
inst->op == QOP_TEX_B)) {
dce(c, inst);
progress = true;
continue;
}
for (int i = 0; i < qir_get_op_nsrc(inst->op); i++) {
if (inst->src[i].file == QFILE_TEMP)
used[inst->src[i].index] = true;