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ir3: add is_war_hazard_producer helper

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Signed-off-by: Job Noorman <jnoorman@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30611>
This commit is contained in:
Job Noorman 2024-08-12 09:28:18 +02:00 • committed by Marge Bot
parent ce5c0c21c4
commit bb13f30db2
2 changed files with 10 additions and 1 deletions
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9
src/freedreno/ir3/ir3.h
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@ -2154,6 +2154,15 @@ soft_sy_delay(struct ir3_instruction *instr, struct ir3 *shader)
}
}
/* Some instructions don't immediately consume their sources so may introduce a
* WAR hazard.
*/
static inline bool
is_war_hazard_producer(struct ir3_instruction *instr)
{
return is_tex(instr) || is_mem(instr) || is_ss_producer(instr);
}
bool ir3_cleanup_rpt(struct ir3 *ir, struct ir3_shader_variant *v);
bool ir3_merge_rpt(struct ir3 *ir, struct ir3_shader_variant *v);
bool ir3_opt_predicates(struct ir3 *ir, struct ir3_shader_variant *v);

2
src/freedreno/ir3/ir3_legalize.c
View file

@ -649,7 +649,7 @@ legalize_block(struct ir3_legalize_ctx *ctx, struct ir3_block *block)
/* both tex/sfu appear to not always immediately consume
* their src register(s):
*/
if (is_tex(n) || is_mem(n) || is_ss_producer(n)) {
if (is_war_hazard_producer(n)) {
/* These WAR hazards can always be resolved with (ss). However, when
* the reader is a sy-producer, they can also be resolved using (sy)
* because once we have synced the reader's results using (sy), its