diff options
Diffstat (limited to 'src/gallium/drivers/vc4')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_qir_schedule.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_qir_schedule.c b/src/gallium/drivers/vc4/vc4_qir_schedule.c index ea48a858337..89e6d1d0d60 100644 --- a/src/gallium/drivers/vc4/vc4_qir_schedule.c +++ b/src/gallium/drivers/vc4/vc4_qir_schedule.c @@ -569,6 +569,28 @@ latency_between(struct schedule_node *before, struct schedule_node *after) after->inst->op == QOP_TEX_RESULT) return 100; + switch (before->inst->op) { + case QOP_RCP: + case QOP_RSQ: + case QOP_EXP2: + case QOP_LOG2: + for (int i = 0; i < qir_get_nsrc(after->inst); i++) { + if (after->inst->src[i].file == + before->inst->dst.file && + after->inst->src[i].index == + before->inst->dst.index) { + /* There are two QPU delay slots before we can + * read a math result, which could be up to 4 + * QIR instructions if they packed well. + */ + return 4; + } + } + break; + default: + break; + } + return 1; } |