This will translate to HDC Constant Cache loads or LSC UGM loads.
On LSC, MEMORY_MODE_UNTYPED would be fine, but for HDC we need to
distinguish between the regular and constant cache data ports.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32888>
HDC doesn't support block loads/stores with sub-DWord (<4B) aligned
offsets, and shared local memory has to use the Aligned OWord Block
messages which require OWord (16B) alignment.
Make the validator detect this case and say no. Also make the lowering
code assert that the alignment is valid as a second line of defense.
LSC has no such restrictions.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32888>
Moving it to intel_shader_enums.h
The plan is to make it visible to OpenCL shaders.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Tapani Pälli <tapani.palli@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32329>
This was triggering an assertion in the fs_builder::MOV helper that
the destination stride can't be 0 when dispatch_width > 1. What we
want to do is copy the single 64-bit channel of data from the UNIFORM
file to a VGRF. We can use a SIMD1 builder for that.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31995>
We can't use register counts since 16-bit sampler loads in SIMD8 will
only write back half a GRF.
Signed-off-by: Lionel Landwerlin <llandwerlin@gmail.com>
Fixes: 0116430d39 ("intel/brw: Handle 16-bit sampler return payloads")
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Acked-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31307>
In the RT shader, if there's a executeCallableEXT() in between,
even though the called shader does nothing, the instructions before and
after the executeCallableEXT() is not properly synced.
Patch fixes:
- dEQP-VK.ray_tracing_pipeline.memguarantee.inside.rgen
- dEQP-VK.ray_tracing_pipeline.memguarantee.inside.chit
- dEQP-VK.ray_tracing_pipeline.memguarantee.inside.miss
- dEQP-VK.ray_tracing_pipeline.memguarantee.inside.call
Thank to Kevin for finding out there is a load/store issue.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31201>
We'll want to tune this setting based on other parameters.
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Backport-to: 24.2
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/31196>
These have now been replaced by the MEMORY_*_LOGICAL opcodes.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Acked-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30828>
This is more complicated. We map the MEMORY_*_LOGICAL opcodes to the
older HDC messages: typed and untyped surface read/write/atomic (whether
float or integer), DWord and Byte scattered messages, OWord block, and
both A64, BTI, and stateless messages.
- MEMORY_MODE_* is used to select stateless-scratch, typed, or untyped.
- MEMORY_FLAG_TRANSPOSE is used to select block access.
- MEMORY_BINDING_TYPE = FLAT and 64-bit address size selects A64.
- Alignment and data type size select between byte/dword scattered or
surface messages.
While we may not be able to handle the full generality of message
possibilities, we can handle everything we generate currently. The plan
here is to assert/validate that we don't generate MEMORY_*_LOGICAL ops
on HDC-based platforms which can't support those particular messages.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Acked-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30828>
This is pretty straightforward, as the new MEMORY_*_LOGICAL opcodes
are designed to match the new LSC's capabilities. The main part is
constructing the message payload.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30828>
This is a new unified set of opcodes for memory access loosely patterned
after the new LSC-style data port messages introduced on Alchemist GPUs.
Rather than creating an opcode for every type of memory access, it has
only three opcodes: load, store, and atomic. It has various sources to
indicate the rest:
- Binding type (raw pointer, pointer to surface state, or BT index)
- Address size (A64, A32, A16)
- Data size (bit size, number of components)
- Opcode (atomic opcode, or LOAD/STORE vs. LOAD_CMASK/STORE_CMASK)
- Mode (typed vs. untyped vs. shared-local vs. scratch)
- Address (and its dimensionality)
- Data (0 for loads, 1 for stores, 2 for atomics)
- Whether we want block access
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Reviewed-by: Rohan Garg <rohan.garg@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30828>
The LOAD/STORE opcodes take a vector size, while the LOAD/STORE_CMASK
opcodes take a channel mask. The two are mutually exclusive. So we
can just have the lsc_msg_desc() helper take one or the other in the
same parameter. This more closely matches the actual descriptor.
We couldn't do this until the previous commit, since we were previously
relying on the lsc_msg_desc() function to calculate a cmask out of the
number of vector components. But now we don't need it to do that.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30632>
The LOAD/STORE opcodes take a vector size (number of components), while
the LOAD/STORE_CMASK opcodes take a channel mask. For some reason, we
were passing a number of channels to lsc_msg_desc(), then using it to
construct a channel mask with all channels enabled, and always using the
CMASK message variants.
Considering we don't actually want to mask off any channels, we should
probably just use the regular LOAD/STORE opcodes, as they're more
flexible anyway.
One exception is that typed messages on Xe2 apparently only support
LOAD_CMASK/STORE_CMASK and not regular LOAD/STORE. So we keep using
those there. (Thanks to Sagar Ghuge for catching this!)
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30632>
The long names were originally meant to map to the HW encoding but
nowadays the actual encoding values depend on gfx version, whether
instruction is 3src, etc.
Suggested by Ken.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30704>
We were currently emitting logical atomic instructions with a packed
destination region for sub-dword LSC atomics, along the lines of:
> untyped_atomic_logical(32) dst<1>:HF, ...
However, these instructions use an LSC data size D16U32, which means
that the 16b data on the return payload is expanded to 32b by the LSC
shared function, so we were lying to the compiler about the location
of the individual channels on the return payload, its execution
masking, etc. This is why the hacks that manually set the
'inst->size_written' of the instruction were required.
In some cases this worked, but any non-trivial manipulation of the
instruction destination by lowering or optimization passes could have
led to corruption, as has been reproduced in deqp-vk during
lower_simd_width() for shaders that use 16-bit atomics in SIMD32
dispatch mode.
Note that LSC sub-dword reads aren't affected by this because they use
raw UD destinations and specify the actual bit size of the operation
datatype as the immediate SURFACE_LOGICAL_SRC_IMM_ARG, which doesn't
work for atomic operations since that immediate specifies the atomic
opcode.
Instead, have the logical operation implement the behavior of 16-bit
destinations correctly instead of silently replacing the 16-bit region
with an inconsistent 32-bit region -- This is done by emitting the MOV
instructions used to pack the data from the UD temporary into the
packed destination from the lower_logical_sends() pass instead of from
the NIR translation pass.
Fixes: 43169dbbe5 ("intel/compiler: Support 16 bit float ops")
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30683>
Bspec 64643: Structure_TraceRayPayload::Trace Ray Control
Bit field moved from 9-8 to 10-8 on Xe2.
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30600>
The generator code for emitting legacy scratch headers was implicitly
using g0 as a source. But the IR wasn't indicating any usage of g0,
which means the liveness isn't properly tracked at the IR level.
It works because we reserve g0 as permanently live for the whole
program. In order to stop doing that, we need to record it properly.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30319>
API requires samplers to return 32-bit even though hardware can handle
16-bit floating point, so we detect that case and make more efficient
use of memory BW. This is helping improve performance of encode and
decode tokens during LLM by at least 5% across multiple platforms.
Thank you Kenneth Graunke for suggesting and guiding me throughout
this implementation.
Signed-off-by: Sushma Venkatesh Reddy <sushma.venkatesh.reddy@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30447>
Doxygen documentation says
> If the file name is omitted (i.e. the line after \file is left
> blank) then the documentation block that contains the \file command will
> belong to the file it is located in.
so we can omit the filename itself when using the annotation.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30168>
Looks like some of the tests uses the bias which does not fit into half
float parameter, so it's better to use float param for sample_b.
If we have cube arrays, we anyway combine BIAS and array index properly
so we don't have to worry about the first parameter.
This fixes: GTF-GL46.gtf21.GL3Tests.texture_lod_bias.texture_lod_bias_clamp_m_g_M
Signed-off-by: Sagar Ghuge <sagar.ghuge@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29533>
The r0.5 thread payload register contains Surface State Offset bits
[27:6] as bits [31:10], so we need to shift the register right by 4 in
order to get the surface state offset expected in ExBSO mode, which is
the only extended descriptor encoding supported by the UGM shared
function for SS addressing on Xe2+.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29543>
According to PRMs:
"All parameters are of type IEEE_Float, except those in the The ld*,
resinfo, and the offu, offv of the gather4_po[_c] instruction message
types, which are of type signed integer."
Currently, we load parameters with the correct types, but use them as send
sources with the default float type, which may confuse passes downstream.
Fix this by actually storing the retyped sources.
Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/11118
Signed-off-by: Sviatoslav Peleshko <sviatoslav.peleshko@globallogic.com>
Reviewed-by: Sagar Ghuge <sagar.ghuge@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29581>
In 2c65d90bc8 I forgot to add the new SHADER_OPCODE_READ_MASK_REG
opcode to the list of barrier instruction in the scheduler. Let's just
use a single opcode for all ARF registers that need special
scoreboarding and put the register as source (nicer for the debug
output).
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Fixes: 2c65d90bc8 ("intel/brw: ensure find_live_channel don't access arch register without sync")
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29446>
Gfx11-12 can support SLM block loads via OWord Block Load messages
(notably, the aligned version, not the unaligned version).
A while back we deleted the SHADER_OPCODE_OWORD_BLOCK_READ opcode.
Rather than bring it back, we continue using UNALIGNED_OWORD_BLOCK_READ
for SLM block access (like we do for SSBOs) but switch it over to the
aligned variant when lowering logical sends. We do ensure the alignment
is at least 16B, however. This is ugly, but it's probably not worth
bringing back a whole extra opcode for a legacy HDC block load quirk.
References: BSpec 47652 and 1689
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9960
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/29429>
Both of these helpers do the same thing. We now have brw_type_size_bits
and brw_type_size_bytes and can use whichever makes sense in that place.
Reviewed-by: Caio Oliveira <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28847>
We already have a logical opcode and lower to what is basically a send
instruction. We just weren't using SHADER_OPCODE_SEND, instead having
extra redundant infrastructure for no real gain.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28705>
Rework:
* Francisco Jerez: Rebase on 07b9bfacc7 ("intel/compiler: Move
logical-send lowering to a separate file")
* Jordan: Move SHADER_OPCODE_DWORD_SCATTERED_*_LOGICAL from previous
patch, as it seems to make more sense here.
* Jordan: Change `devinfo->has_lsc` ?: to if/else as suggested by idr
Signed-off-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28484>
Reworks:
* Francisco: Rebase on 07b9bfacc7 ("intel/compiler: Move
logical-send lowering to a separate file")
* Jordan: Rebase on 952a523abb ("intel: switch over to unified
atomics")
Signed-off-by: Rohan Garg <rohan.garg@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28484>
We cannot rely on the immediate message descriptor having accurate
values for mlen and rlen at the IR level, since they are updated at
codegen time via 'inst->mlen' and 'inst->size_written', which could
end up with values inconsistent with the message descriptor if
e.g. the split sends optimization had an effect. Instead, define
helpers that do the computation without relying on the message
descriptor, and use the pre-existing
brw_message_desc_mlen()/brw_message_desc_rlen() helpers (fully
equivalent to the lsc helpers deleted here) during disassembly.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/28484>
src/intel/compiler/brw_lower_logical_sends.cpp: In member function ‘bool fs_visitor::lower_logical_sends()’:
src/intel/compiler/brw_lower_logical_sends.cpp:3170:10: warning: this statement may fall through [-Wimplicit-fallthrough=]
3170 | if (devinfo->has_lsc) {
| ^~
src/intel/compiler/brw_lower_logical_sends.cpp:3174:7: note: here
3174 | case SHADER_OPCODE_DWORD_SCATTERED_READ_LOGICAL:
| ^~~~
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27552>
