Task/Mesh stages are CS-like stages, and include many
builtins (e.g. workgroup ID/index) and intrinsics (e.g. workgroup
memory primitives) originally present only in CS.
This commit add two new stages (task and mesh) that 'inherit' from CS
by embedding a brw_cs_prog_data in their own prog_data structure, so
that CS functionality can be easily reused. They also currently use
the same helpers to select the SIMD variant to use -- that was
recently added for CS.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13661>
INTEL_DEBUG is defined (since 4015e1876a) as:
#define INTEL_DEBUG __builtin_expect(intel_debug, 0)
which unfortunately chops off upper 32 bits from intel_debug
on platforms where sizeof(long) != sizeof(uint64_t) because
__builtin_expect is defined only for the long type.
Fix this by changing the definition of INTEL_DEBUG to be function-like
macro with "flags" argument. New definition returns 0 or 1 when
any of the flags match.
Most of the changes in this commit were generated using:
for c in `git grep INTEL_DEBUG | grep "&" | grep -v i915 | awk -F: '{print $1}' | sort | uniq`; do
perl -pi -e "s/INTEL_DEBUG & ([A-Z0-9a-z_]+)/INTEL_DBG(\1)/" $c
perl -pi -e "s/INTEL_DEBUG & (\([A-Z0-9_ |]+\))/INTEL_DBG\1/" $c
done
but it didn't handle all cases and required minor cleanups (like removal
of round brackets which were not needed anymore).
Signed-off-by: Marcin Ślusarz <marcin.slusarz@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13334>
v2: Very significant rebase on changes to previous commits.
Specifically, brw_fs_nir.cpp changes were pretty much rewritten from
scratch after changing the NIR opcode names and types.
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12142>
A lot of CTS tests write a u8vec4 or an i8vec4 to an SSBO. This results
in a lot of shifts and MOVs. When that pattern can be recognized, the
individual 8-bit components can be packed much more efficiently.
v2: Rebase on b4369de27f ("nir/lower_packing: use
shader_instructions_pass")
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9025>
This is where it should be rather than having to pass it into the
optimisation pass every time.
It also allows us to call the loop analysis pass without having to
duplicate these options which we will do later in this series.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/12064>
This commit adds a delta to be added to the relocated value as well as
the possibility of multiple types of relocations.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8637>
Some nir lowerings might need to know if txs is supported by
the backend.
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8898>
The Intel bindless thread dispatch model is very simple. When a compute
shader is to be used for bindless dispatch, it can request a set of
stack IDs. These are allocated per-dual-subslice by the hardware and
recycled automatically when the stack ID is returned. Passed to the
bindless dispatch are a global argument address, a stack ID, and an
address of the BINDLESS_SHADER_RECORD to invoke. When the bindless
shader is dispatched, it is passed its stack ID as well as the global
and local argument pointers. The local argument pointer is the address
of the BINDLESS_SHADER_RECORD plus some offset which is specified as
part of the BINDLESS_SHADER_RECORD.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7356>
Intel hardware supports 8-bit arithmetic but it's tricky and annoying:
- Byte operations don't actually execute with a byte type. The
execution type for byte operations is actually word. (I don't know
if this has implications for the HW implementation. Probably?)
- Destinations are required to be strided out to at least the
execution type size. This means that B-type operations always have
a stride of at least 2. This means wreaks havoc on the back-end in
multiple ways.
- Thanks to the strided destination, we don't actually save register
space by storing things in bytes. We could, in theory, interleave
two byte values into a single 2B-strided register but that's both a
pain for RA and would lead to piles of false dependencies pre-Gen12
and on Gen12+, we'd need some significant improvements to the SWSB
pass.
- Also thanks to the strided destination, all byte writes are treated
as partial writes by the back-end and we don't know how to copy-prop
them.
- On Gen11, they added a new hardware restriction that byte types
aren't allowed in the 2nd and 3rd sources of instructions. This
means that we have to emit B->W conversions all over to resolve
things. If we emit said conversions in NIR, instead, there's a
chance NIR can get rid of some of them for us.
We can get rid of a lot of this pain by just asking NIR to get rid of
8-bit arithmetic for us. It may lead to a few more conversions in some
cases but having back-end copy-prop actually work is probably a bigger
bonus. There is still a bit we have to handle in the back-end. In
particular, basic MOVs and conversions because 8-bit load/store ops
still require 8-bit types.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7482>
This reverts commit 939ddf3f67.
Intel has a separate pass for fusing FFMAs selectively. We split
these flags in commit 1b72c31e1f and
the reasoning still stands. The patch being reverted was just a
cleanup, so there should be no issue with reverting it.
Acked-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6849>
Since everything flows through NIR and we're doing all of our indirect
deref lowering there now, there's no reason to keep making those
decisions in brw_compiler and stuffing them in the GLSL compiler
structs.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5909>
With discrete GPUs, it's going to be possible to have GPUs from two
different hardware generations in the machine at the same time. Global
singletons like this aren't going to fly. Have a struct containing the
pointers which gets initialized once per shader disassemble instead.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6244>
That's more future proof than setting each bit manually. Looks like we
already miss nir_lower_ufind_msb64 because of that.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Acked-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5588>
SPIRV OpControlBarrier can have both a memory and a control barrier
which some hardware can handle with a single instruction. Let's
turn the scoped_memory_barrier into a scoped barrier which can embed
both barrier types. Note that control-only or memory-only barriers can
be supported through this new intrinsic by passing NIR_SCOPE_NONE to the
unused barrier type.
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Suggested-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4900>
v2: Use new lower_hadd64 and lower_usub_sat64 flags.
v3: Enable SPIR-V capability.
v4: Move lowering options to COMMON_SCALAR_OPTIONS. Suggested by Caio.
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/767>
See the previous commit for the explanation of the Fixes tag.
Hurts 21 shaders in shader-db. All of the hurt shaders are in Unreal
Engine 4 tech demos.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Fixes: 7afa26d4e3 ("nir: Add lowering for nir_op_bitfield_reverse.")
Now that the 64-bit lowering passes do a complete lowering in one go, we
don't need to loop anymore. We do, however, have to ensure that int64
lowering happens after double lowering because double lowering can
produce int64 ops.
Reviewed-by: Eric Anholt <eric@anholt.net>
We need this when doing full software 64-bit emulation.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110309
Fixes: cbad201c2b "nir/algebraic: Add missing 64-bit extract_[iu]8..."
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
A couple patches later in this series use the flag to avoid a few
thousand shader-db regresions on all vec4 platforms.
I'm not particularly enamored with the name of this flag. However, I
suspect the Intel vec4 backend is the only backend that will benefit
from it. Specifically, the cases where this helps are all cases where
we want to prevent nir_opt_algebraic from rearranging instructions to
create 3-source instructions, such as ffma and flrp, with additional
immediate value or uniform sources.
The earlier commit "intel/vec4: Try to emit a single load for multiple
3-src instruction operands" solves most of the problems caused by
additional immediate values, but the restrictions on register strides
that cause problems for uniforms and shader inputs persist.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Right now, all keys have two things in common: a program string ID and a
sampler_prog_key_data. I'd like to add another thing or two and need a
place to put it. This commit adds a new brw_base_prog_key struct which
contains those two common bits.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
We originally had a single lower_fmod option. In commit 2ab2d2e5, Sam
split 32 and 64-bit lowering into separate flags, with the rationale
that some drivers might want different options there. This left 16-bit
unhandled, so Iago added a lower_fmod16 option in commit ca31df6f.
Now that lower_fmod64 is gone (in favor of nir_lower_doubles and
nir_lower_dmod), we re-combine lower_fmod16 and lower_fmod32 into a
single lower_fmod flag again. I'm not aware of any hardware which
need lowering for one bitsize and not the other.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
