In preparation for a Panfrost-based non-Gallium driver (maybe
Vulkan...?), hoist everything except for the Gallium driver into a
shared src/panfrost. Practically, that means the compilers, the headers,
and pandecode.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Share a single mask field in midgard_instruction with a unified format,
rather than using separate masks for each instruction tag with
hardware-specific formats. Eliminates quite a bit of duplicated code and
will enable vec8/vec16 masks as well (which don't map as cleanly to the
hardware as we might like).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
The main motivation for this change is API ergonomics: most operations
on dynarrays are really on elements, not on bytes, so it's weird to have
grow and resize as the odd operations out.
The secondary motivation is memory safety. Users of the old byte-oriented
functions would often multiply a number of elements with the element size,
which could overflow, and checking for overflow is tedious.
With this change, we only need to implement the overflow checks once.
The checks are cheap: since eltsize is a compile-time constant and the
functions should be inlined, they only add a single comparison and an
unlikely branch.
v2:
- ensure operations are no-op when allocation fails
- in util_dynarray_clone, call resize_bytes with a compile-time constant element size
v3:
- fix iris, lima, panfrost
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This follows the txb implementation, but requires an adjustment to how
the cont/last flags are set.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
First, this moves the scheduler and emitter out of midgard_compile.c
into their own dedicated files.
More interestingly, this slims down midgard_bundle to be essentially an
array of _pointers_ to midgard_instructions (plus some bundling
metadata), rather than the instructions and packing themselves. The
difference is critical, as it means that (within reason, i.e. as long as
it doesn't affect the schedule) midgard_instrucitons can now be modified
_after_ scheduling while having changes updated in the final binary.
On a more philosophical level, this removes an IR. Previously, the IR
before scheduling (MIR) was separate from the IR after scheduling
(post-schedule MIR), requiring a separate set of utilities to traverse,
using different idioms. There was no good reason for this, and it
restricts our flexibility with the RA. So unify all the things!
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Ryan Houdek <Sonicadvance1@gmail.com>
Alyssa Rosenzweig
Nicolai Hähnle
Alyssa Rosenzweig