Otherwise, Clang will error out when it doesn't link:
Compiler stderr:
clang: error: argument unused during compilation: '-fuse-ld=lld' [-Werror,-Wunused-command-line-argument]
When that happens when Meson is checking for the presence of macros in
sys/sysmacros.h, that file won't be included resulting in the following
errors:
ld.lld: error: undefined symbol: makedev
ld.lld: error: undefined symbol: major
ld.lld: error: undefined symbol: minor
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Acked-by: Michel Dänzer <mdaenzer@redhat.com>
Acked-by: Eric Anholt <eric@anholt.net>
Gitlab: #4137
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8757>
Forces a trivial schedule to replicate the old behaviour (for debugging
or benchmarking). Actually the new scheduler is still used, just highly
constrained; the net result should still do what's expected.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Replicate the pattern, greedily select clauses until we run out of
instructions.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Once we've merged the clauses' constants, we need to....
1. Swap where necessary so non-pcrel constants are correctly encoded.
2. Swap where necessary so pcrel constants are in canonical positions.
3. Force M1 values for pcrel constants and final single constants.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
These work as you would expect: first handling paired constants
(swapping to a canonical form to deduplicate), then handling unpaired
constants (packing together in a canonical form). Most of the added
complexity is from pcrel handling, but we impose strict invariants on
pcrel (no more than one PC-relative constant per clause, only M1=4 mode)
without which the algorithm would be even uglier.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Based on the tuple state's constants, satisfying the pcrel invariant we
impose.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Mimicks the one previously done at pack time, but designed for schedule
time instead.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
We need to do certain rewrites during scheduling before RA runs in order
to satsify scheduler post-conditions.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
It's a hardware invariant, and useful for the scheduler (not just
packing).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Rather specialized but keeps down obnoxious indentation in scheduler
passes.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Useful for scheduling decisions as well as packing.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Passthroughs are _required_ for correct scheduling, so we have to handle
this now. The legitimacy of using passthroughs is justified by the
constraint checks and verified with asserts at pack time.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Wrapper to select the best legal instruction, pop it off the worklist,
update the clause/tuple states, and return it.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
In the future we'll want a heuristic minimizing register pressure but
for in-order this will suffice.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Using the previously defined checks for architectural scheduling
constraints, define one top-level predicate to check if an instruction
on the worklist is ready for scheduling.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
ATEST is a bit of a wrinkle in this, so let's keep it in one place.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Not visible on real shaders yet, but it will be when we schedule
out-of-order (or implement 64-bit multiplication).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
The number of register writes in a tuple must be bounded by a number
based on the number of register reads in the succeeding tuple, since
writes and reads are interleaved. This helper calculates that number of
reads, noting that not every read actually counts - if the preceding
tuple writes to a read source, that will become a temporary instead of
consuming a register slot.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
To determine the number of register reads in a tuple (which must be
bounded by 3, or 5 if you force writes), we need to count "new" sources:
those that are not already in a partially scheduled tuple.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
This comes in destructive and nondestructive flavours, to be used to
insert an instruction into a tuple and check if an instruction is
insertable respectively. It is responsible for FAU slot matching.
It's annoying this sort of logic is duplicated in 3 places
(bi_lower_fau, here, and packing) but they each work with different sets
of assumptions...
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Needed to satisfy max constant constaints. These aren't precise but
they should be a good enough approximation for now.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
In the near future we'll schedule out-of-order via a dependendency graph
and worklist. For now, emulate in-order operation.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
For the new schedule infrastructure. This supports multiple tuples per
clause, unlike the old hack lowering.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
To satisfy the numerous architectural scheduler constraints, quite a bit
of state is required per-tuple, per-clause, and per-block. These data
structures allow maintaining this state separate from the main IR
data structures, allowing for partial constructions and nondestructive
operations.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Rather than doing this at pack time like before, or adding extra
constraints to the already overcomplicated scheduler, let's just include
it like a regular FAU source.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
We already track the full liveness so this is a trivial optimization,
with an especial win for shaders reading only a subset of components of
gl_FragCoord.
More importantly, it's required for proper scheduling (in soft mode)
when vectors are used and some (but not all components) are promoted to
temporary registers.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Less critical than other metrics, but still matters for instruction
cache hit rate, and worth being aware of.
And, fine, it makes the scheduler look like a bigger win on another
axis.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
The prefetch buffer size is larger than first thought, but includes
the final clause, so subtract the size of the final clause from the
prefetch size.
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8354>
Make it more obvious what the issue is. "_FAST" is not a suffix on
Bifrost.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8894>
For G71 but should work on any Bifrost, probably overlaps some CL stuff.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8894>
These should not be in a union together.
[Note: this does not need to be backported, since the affected
instruction is not emitted under any circumstances in the stable
branches]
Fixes: dd11e5076e ("pan/bi: Add new bi_instr data structure")
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Acked-by: Boris Brezillon <boris.brezillon@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8894>
It is possible to compile pipelines in multiple threads, but when we
are dumping debug information for shaders, we want all the outputs
serialized so we can make sense of it.
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8913>
Tomeu Vizoso
Alyssa Rosenzweig
Icecream95
Iago Toral Quiroga