diff options
| -rw-r--r-- | src/panfrost/midgard/midgard_schedule.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/src/panfrost/midgard/midgard_schedule.c b/src/panfrost/midgard/midgard_schedule.c index 72c6ec42980..86a77149c78 100644 --- a/src/panfrost/midgard/midgard_schedule.c +++ b/src/panfrost/midgard/midgard_schedule.c @@ -817,8 +817,63 @@ struct midgard_predicate { /* True if we want to pop off the chosen instruction */ bool destructive; + + /* State for bundle constants. constants is the actual constants + * for the bundle. constant_count is the number of bytes (up to + * 16) currently in use for constants. When picking in destructive + * mode, the constants array will be updated, and the instruction + * will be adjusted to index into the constants array */ + + uint8_t *constants; + unsigned constant_count; + bool blend_constant; }; +/* For an instruction that can fit, adjust it to fit and update the constants + * array, in destructive mode. Returns whether the fitting was successful. */ + +static bool +mir_adjust_constants(midgard_instruction *ins, + struct midgard_predicate *pred, + bool destructive) +{ + /* Blend constants dominate */ + if (ins->has_blend_constant) { + if (pred->constant_count) + return false; + else if (destructive) { + pred->blend_constant = true; + pred->constant_count = 16; + return true; + } + } + + /* No constant, nothing to adjust */ + if (!ins->has_constants) + return true; + + /* TODO: Deduplicate; permit multiple constants within a bundle */ + + if (destructive && !pred->constant_count) { + if (ins->alu.reg_mode == midgard_reg_mode_16) { + /* TODO: Fix packing XXX */ + uint16_t *bundles = (uint16_t *) pred->constants; + uint32_t *constants = (uint32_t *) ins->constants; + + /* Copy them wholesale */ + for (unsigned i = 0; i < 4; ++i) + bundles[i] = constants[i]; + } else { + memcpy(pred->constants, ins->constants, 16); + } + + pred->constant_count = 16; + return true; + } + + return !pred->constant_count; +} + static midgard_instruction * mir_choose_instruction( midgard_instruction **instructions, |