Commit graph

173300 commits

Author SHA1 Message Date
Erik Faye-Lund
f4bd2d35cb draw: track vertices and vertex_ptr as byte-pointers
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23833>
2023-06-26 09:30:22 +00:00
Erik Faye-Lund
ed4bda8044 draw: use enum for primitive-type
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23833>
2023-06-26 09:30:22 +00:00
Erik Faye-Lund
1569507e26 draw: use uint32_t instead of uint
In these cases we actually want uint32_t, because we're doing 32-bit
things to them.

The hwinfo-bit is only being used by i915, and should probably be
moved to i915 instead. But it shoukd *also* be converted, so let's do
that now.

While we're at it, fixup the bit-setting as well.

Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23833>
2023-06-26 09:30:22 +00:00
Erik Faye-Lund
57abc7d037 draw: use enum for tgsi-semantic
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23833>
2023-06-26 09:30:22 +00:00
Erik Faye-Lund
4844809edb cso: use enum for render-conditions
Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23833>
2023-06-26 09:30:22 +00:00
Samuel Pitoiset
82e2802b7d radv/amdgpu: add a helper to get a new IB
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:10 +00:00
Samuel Pitoiset
148f42be1d radv/amdgpu: rename old_ib_buffers to ib_buffers
No need to prefix with 'old' actually because this is just an array
of IB buffers.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:10 +00:00
Samuel Pitoiset
d74de65069 radv/amdgpu: use cs_finalize() when growing a CS
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:10 +00:00
Samuel Pitoiset
437456b47c radv/amdgpu: use the array of IB buffers for the chained IB path
For executing IB on the compute queue (ie. IB2 isn't supported), we
will need to break chaining, this is a first step towards this.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:10 +00:00
Samuel Pitoiset
81e308df72 radv/amdgpu: do not set the IB size when ending a CS with RADV_DEBUG=noibs
This was only necessary for preambles/postambles, let's clarify this
by determining the IB info from the first IB in the array instead.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:10 +00:00
Samuel Pitoiset
df0c742543 radv/amdgpu: rework growing a CS with the chained IB path slightly
This should allow us to use cs_finalize().

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:09 +00:00
Samuel Pitoiset
c11a62a7b0 radv/amdgpu: use the correct IB size when growing a CS with RADV_DEBUG=noibs
The current IB size is copied when radv_amdgpu_cs_add_old_ib_buffer()
is called, which might not be the real IB size because we might still
pad the CS with NOP packets after.

Found by inspection.

Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23727>
2023-06-26 09:10:09 +00:00
Matt Coster
91143f45b8 pvr: Advance entry pointer in pvr_setup_vertex_buffers()
Fixes: dEQP-VK.robustness.robustness1_vertex_access
  .out_of_bounds_stride_0
  .out_of_bounds_stride_16_single_buffer
  .out_of_bounds_stride_30_middle_of_buffer
  .out_of_bounds_stride_8_middle_of_buffer_separate

Signed-off-by: Matt Coster <matt.coster@imgtec.com>
Reviewed-by: Karmjit Mahil <Karmjit.Mahil@imgtec.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23834>
2023-06-26 08:40:13 +00:00
Corentin Noël
bc2828a436 compiler: Allow the explicit_stride of aoa types to be zero
The explicit stride doesn't have to be defined to aoa and therefore can be
zero in some cases, like in arrays of arrays of uniform blocks.

Resolves crash with spec@arb_gl_spirv@execution@ubo@aoa-2.shader_test piglit test for virgl.

Signed-off-by: Corentin Noël <corentin.noel@collabora.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Acked-by: Gert Wollny <gert.wollny@collabora.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23648>
2023-06-26 09:19:43 +02:00
Hyunjun Ko
9f4299d6b2 anv: fix to set predicted weight tables correctly.
Fixes: 8d519eb5f ("anv: add initial video decode support for h265")
Closes: mesa/mesa#9214

Signed-off-by: Hyunjun Ko <zzoon@igalia.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23790>
2023-06-26 15:08:05 +09:00
Hyunjun Ko
b8dc7675f2 intel/genxml: changes the type for predicted weight to unsigned.
Turned out to be unsigned here after some experiments.

Signed-off-by: Hyunjun Ko <zzoon@igalia.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23790>
2023-06-26 15:08:00 +09:00
Hyunjun Ko
e2f95ad296 vulkan/video: keep delta weight and offsets of predicted weight tables in h265 slice parsing
Signed-off-by: Hyunjun Ko <zzoon@igalia.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23790>
2023-06-26 15:07:53 +09:00
Caio Oliveira
c421ecea56 vulkan: Update XML and headers to 1.3.255
Acked-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23837>
2023-06-25 15:52:55 +00:00
Caio Oliveira
73af0475cb vulkan: Add NV suffix to VK_NV_cooperative_matrix feature names
In the new Vulkan Headers, VK_KHR_cooperative_matrix gets added and the feature
names are the same.

Acked-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23837>
2023-06-25 15:52:55 +00:00
Karol Herbst
0759759658 rusticl/program: skip linking compiled binaries
Applications can do their own caching, but are in any case required to
properly "compiler" the binaries via clBuildProgram or clCompileProgram +
clLinkPrograms.

In any case, there is no point building something if we already have the
result.

Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23847>
2023-06-25 11:15:17 +02:00
Karol Herbst
18f1087a21 rusticl: bump bindgen requirement
Apparently on some ARM systems any older bindgen version crashes.

Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23840>
2023-06-24 15:37:18 +00:00
Yonggang Luo
5b29463746 nir: Add function nir_function_set_impl
This function is added for create strong relationship between
nir_function_impl and nir_function.

So that nir_function->impl->function == nir_function is always true when
(nir_function->impl != NULL && nir_function->impl != NIR_SERIALIZE_FUNC_HAS_IMPL)

And indeed this invariant is already done in functions validate_function and validate_function_impl
of nir_validate

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23820>
2023-06-24 14:48:47 +00:00
Yonggang Luo
9fa38cf142 vtn: Do not assign main_entry_point->impl twice
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23820>
2023-06-24 14:48:47 +00:00
Yonggang Luo
0d9f474381 draw: Update the comment and function name to match the type
Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23845>
2023-06-24 20:52:56 +08:00
Yonggang Luo
e7f0dd2710 draw: Replace usage of ubyte/ushort/uint with uint8_t/uint16_t/uint32_t in draw_pt_vsplit.c
This can not be done with tools, so do it manually

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23845>
2023-06-24 20:52:53 +08:00
Yonggang Luo
f35ebd221f draw: Replace usage of boolean/TRUE/FALSE with bool/true/false in draw_pt_vsplit*
These change can not be done with tools, so do it manually

Signed-off-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23845>
2023-06-24 20:52:49 +08:00
Karol Herbst
fbe9a7ca3e rusticl/mesa: create proper build-id hash for the disk cache
Without generating a proper timestamp for the disk cache, we pull old
binaries out of the disk cache, potentially being buggy or simply
outdated.

Once meson 1.2 lands we can easily pull in LLVM functions.

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21612>
2023-06-24 12:36:36 +00:00
Karol Herbst
29b932512a rusticl/meson: extract common bindgen rust args
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21612>
2023-06-24 12:36:36 +00:00
Karol Herbst
c896373889 rusticl: generate bindings for build-id stuff
Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21612>
2023-06-24 12:36:36 +00:00
Karol Herbst
d14af00432 rusticl: structurize and reorder mesa binding args
It became quite a mess, I had enough 🙃

Signed-off-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21612>
2023-06-24 12:36:36 +00:00
Eric Engestrom
337908440e v3dv: replace boolean and uint with bool and size_t
There's no reason to use the gallium `p_compiler.h` types in vulkan code.

Inspired by https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23577,
but using `size_t` for `ulist_data_size` because its two users are
`blob_read_bytes()` and `memcpy()`, both of which expect a `size_t`.

Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23795>
2023-06-24 12:21:09 +00:00
Eric Engestrom
fa8a232691 docs/coding-style: add pre-commit hook fallback for clang-format
Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23722>
2023-06-24 12:04:15 +00:00
Eric Engestrom
270d898e75 docs/coding-style: add example emacs config for clang-format
Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23722>
2023-06-24 12:04:14 +00:00
Eric Engestrom
342196f7b0 docs/coding-style: add example vim config for clang-format
Signed-off-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23722>
2023-06-24 12:04:14 +00:00
Pavel Ondračka
89873e5e5c r300: properly count maximum used register index
The problem is when we have DP2 or DP3 instruction that writes a w
channel like here:

DP3 temp[148].w, -temp[147].xyz_, temp[57].xyz_;

will get pair-converted to

src0.xyz = temp[147], src1.xyz = temp[57]
DP3, -src0.xyz, src1.xyz
DP3 temp[148].w, -src0._, src0._

where the alpha instruction is a basically just a replicate of the
result from the RGB sub intruction. However the destination register
index in the RBG slot is also 148. Now we pair-schedule and regalloc

src0.xyz = temp[13], src1.xyz = temp[3]
DP3, -src0.xyz, src1.xyz
DP3 temp[3].w, -src0._, src0._

We properly regalloc the alpha channel, but we obviously skip the rgb,
because the writemask is empty there. However when we emit the shader
later, we actually check the number of used regs based on the maximum
used register index and we don't consider the writemasks, so we would
think we use 149 temps. AFAIK the shader would be still completelly OK.
But we would think it hits the HW limits and used a dummy one instead.

Fix this by checking for empty writemasks when marking the registers as
used.

GAINED: shaders/glmark/1-22.shader_test FS

This is also needed to prevent another lost Trine shader from
https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23089

Reviewed-by: Filip Gawin <filip.gawin@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23838>
2023-06-24 11:30:47 +00:00
Matt Turner
561cce32f1 anv: Only expose video decode bits with KHR_video_decode_queue
This fixes dEQP-VK.api.info.format_properties.g8_b8r8_2plane_420_unorm
in combination with the CTS fix from
https://gerrit.khronos.org/c/vk-gl-cts/+/12191

Fixes: 9361481780 ("anv: add video format features for the one supported video output format")
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/8263
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23776>
2023-06-24 02:54:37 +00:00
Matt Turner
727335045d anv: Pipe anv_physical_device to anv_get_image_format_features2
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23776>
2023-06-24 02:54:37 +00:00
Karol Herbst
02aaf58908 nv50/ir/nir: set numBarriers if we emit an OP_BAR
Even though the field is called `numBarriers` we set it to 1 just like
we do with TGSI. It's unknown on what's the proper behavior here is. But
without this set the GPU will complain to us loudly, so this silences at
least that.

Fixes: a2d7a4f978 ("nv50/ir: convert to scoped_barrier")
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: M Henning <drawoc@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23749>
2023-06-24 02:12:14 +00:00
Karol Herbst
69c452781b nvc0: fix printing shaders
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: M Henning <drawoc@darkrefraction.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23749>
2023-06-24 02:12:14 +00:00
Karol Herbst
45d86b419b rusticl/program: add debugging option to disable SPIR-V validation
This is useful for running applications known to pass in invalid SPIR-V.

Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23818>
2023-06-24 01:52:07 +00:00
Karol Herbst
2b2a513890 rusticl/program: add debugging for OpenCL C compilation
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23818>
2023-06-24 01:52:07 +00:00
Karol Herbst
2362fd502b docs: document CLC_DEBUG
Signed-off-by: Karol Herbst <git@karolherbst.de>
Reviewed-by: Nora Allen <blackcatgames@protonmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23818>
2023-06-24 01:52:07 +00:00
Kenneth Graunke
1b3669a1ed intel: Initialize FF_MODE2 on all Gfx12 platforms
On Alchemist, the FF_MODE2 documentation says that we must set the
FF_MODE2 timer values for GS and HS to 224.  The hardware performance
tuning guide also recommends setting the TDS timer to 4.

On Tigerlake, i915 applies workarounds to set the GS timer to 224
(failing to do so can cause HS/DS unit hangs), and the TDS timer to 4
(for performance).  It doesn't currently apply a HS timer there, and
I'm not sure if it's strictly necessary, but given that Alchemist
needed it, and the other two settings matched, let's assume that it
ought to match as well.

Unfortunately, there has been a bug in the i915 workarounds
infrastructure for non-masked context registers where writing one
field of the register zeroes out all the others.  So, I believe the
Tigerlake TDS timer value of 4 isn't being applied correctly there,
though the register is also not readable on that platform which
makes it hard to verify.  So, this may also speed up tessellation.

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9233
Reviewed-by: José Roberto de Souza <jose.souza@intel.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23839>
2023-06-24 01:20:36 +00:00
Francisco Jerez
427fee3507 intel/gfx12.5: Enable L3 partial write merging for compressible surfaces among other cases.
This enables L3 partial write merging for a number of cases that seem
to be getting accidentally disabled by the kernel, which was causing a
serious performance bottleneck on DG2 and MTL platforms.  The
"Compressible Partial Write Merge Enable", "Coherent Partial Write
Merge Enable" and "Cross-Tile Partial Write Merge Enable" bits in
L3SQCREG5 were expected to be enabled by default (and confusingly,
they even read off as enabled if you ran 'intel_reg read 0xb158' on an
idle system), but they are getting clobbered during 3D context
initialization by an i915 workaround.

Enabling L3 partial write merging of compressible surfaces in
particular seems to increase rendering fillrate by over 3x in some
cases (e.g. the
"VulkanFillRate/FillRateGPU/resolution:1[0-3]/format:*/blend:0"
fillrate-bound microbenchmarks).  Significant improvements can also be
reproduced in most real-world workloads we've tested so far,
e.g. Counter Strike GO improves by ~11%, Shadow Of the Tomb Raider
improves by ~5.5%, and AztecRuins-VK improves by ~6.5% on DG2-512 --
Thanks a lot to Caleb Callaway for these figures.  No regressions have
been observed so far.

Even though this patch might strike as surprisingly simple for such a
large payoff, it's the result of Felix DeGrood and I trying to
root-cause the rendering performance gap of DG2 on Linux vs Windows on
and off during the last year, and some of the OA statistics captured
by Felix early this month were greatly helpful for me to connect the
last few dots, so Felix deserves a big chunk of the credit for this
work.

Cc: mesa-stable
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23783>
2023-06-23 21:24:27 +00:00
David Heidelberg
d7ec6f1724 ci/fastboot: use gzipped Image to avoid compressing on the runner
Faster download, one less step. Win-win.

Signed-off-by: David Heidelberg <david.heidelberg@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23816>
2023-06-23 20:47:53 +00:00
Thong Thai
7d3c29dc60 frontends/va: fix some coverity scan reported issues
Added some checks for NULL pointer dereferencing and loop bounds.
v2: Use ARRAY_SIZE instead of magic numbers (@jenatali)

Signed-off-by: Thong Thai <thong.thai@amd.com>
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23598>
2023-06-23 20:31:21 +00:00
Caio Oliveira
dc93f205c1 meson: Explicitly add "check : false" to a couple instances of run_command
In both cases there's code right after the execution to check the result and
give a proper message.

This gets rid of meson warning

```
WARNING: You should add the boolean check kwarg to the run_command call.
         It currently defaults to false,
         but it will default to true in future releases of meson.
         See also: https://github.com/mesonbuild/meson/issues/9300
```

Reviewed-by: Eric Engestrom <eric@igalia.com>
Reviewed-by: Yonggang Luo <luoyonggang@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23821>
2023-06-23 18:57:31 +00:00
Rhys Perry
d3e5e04a75 amd/drm-shim: use fixed-width types
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Eric Engestrom <eric@igalia.com>
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9221
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23725>
2023-06-23 18:35:52 +00:00
Alyssa Rosenzweig
766535c867 agx: Implement vector live range splitting
The SSA killer feature is that, under an "optimal" allocator, the number of
registers used (register demand) is *equal* to the number of registers required
(register pressure, the maximum number of variables simultaneously live at any
point in the program). I put "optimal" in scare quotes, because we don't need to
use the exact minimum number of registers as long as we don't sacrifice thread
count or introduce spilling, and using a few extra registers when possible can
help coalesce moves. Details-shmetails.

The problem is that, prior to this commit, our register allocator was not
well-behaved in certain circumstances, and would require an arbitrarily large
number of registers. In particular, since different variables have different
sizes and require contiguous allocation, in large programs the register file may
become fragmented, causing the RA to use arbitrarily many registers despite
having lots of registers free.

The solution is vector live range splitting. First, we calculate the register
pressure (the minimum number of registers that it is theoretically possible to
allocate successfully), and round up to the maximum number of registers we will
actually use (to give some wiggle room to coalesce moves). Then, we will treat
this maximum as a *bound*, requiring that we don't use more registers than
chosen. In the event that register file fragmentation prevents us from finding a
contiguous sequence of registers to allocate a variable, rather than giving up
or using registers we don't have, we shuffle the register file around
(defragmenting it) to make room for the new variable. That lets us use a
few moves to avoid sacrificing thread count or introducing spilling, which is
usually a great choice.

Android GLES3.1 shader-db results are as expected: some noise / small
regressions for instruction count, but a bunch of shaders with improved thread
count. The massive increase in register demand may seem weird, but this is the
RA doing exactly what it's supposed to: using more registers if and only if they
would not hurt thread count. Notice that no programs whatsoever are hurt for
thread count, which is the salient part.

   total instructions in shared programs: 1781473 -> 1781574 (<.01%)
   instructions in affected programs: 276268 -> 276369 (0.04%)
   helped: 1074
   HURT: 463
   Inconclusive result (value mean confidence interval includes 0).

   total bytes in shared programs: 12196640 -> 12201670 (0.04%)
   bytes in affected programs: 1987322 -> 1992352 (0.25%)
   helped: 1060
   HURT: 513
   Bytes are HURT.

   total halfregs in shared programs: 488755 -> 529651 (8.37%)
   halfregs in affected programs: 295651 -> 336547 (13.83%)
   helped: 358
   HURT: 9737
   Halfregs are HURT.

   total threads in shared programs: 18875008 -> 18885440 (0.06%)
   threads in affected programs: 64576 -> 75008 (16.15%)
   helped: 82
   HURT: 0
   Threads are helped.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23832>
2023-06-23 17:37:41 +00:00
Alyssa Rosenzweig
72e6b683f3 agx/lower_parallel_copy: Lower 64-bit copies
To 32-bit. This way we don't get into bad situations where we need to eg swap
unaligned 64-bit values or something funny like that.

Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23832>
2023-06-23 17:37:41 +00:00