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authorRob Clark <[email protected]>2017-11-07 15:12:03 -0500
committerRob Clark <[email protected]>2017-11-12 12:28:59 -0500
commit819a613ae33410584e13e78e78af82c71716f67d (patch)
tree2b7551998072e345de1fdb61a446f7b394dab142 /src/loader
parent15ea8d128ae1b52d419ab5af586c01769276ec9c (diff)
freedreno/ir3: moar better scheduler
Add a new pass that inserts additional dependencies, rather than simply relying on SSA srcs added in the nir->ir3 frontend. This makes it easier to deal with barriers, but the additional false deps also lets us deal properly with ensuring a write depends on all previous reads. Since conversion to barrier instructions is lossy (ie. just knowing the instruction doesn't tell us enough about what other instructions the barrier applies to), use barrier_class/barrier_conflict fields in the ir3_instruction to retain this information. This could probably be relaxed somewhat by considering *which* array/ buffer/image variable is being referenced. Ie. a write to buffer A can overtake a read from buffer B, if B is not coherent. (right?) Signed-off-by: Rob Clark <[email protected]>
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