Commit graph

2682 commits

Author SHA1 Message Date
Rhys Perry
4735c8a522 nir/loop_analyze: adjust force unrolling to only include interesting modes
Instead of force-unrolling any loop which reads an entire array, only do
it for arrays which might be faster to access with constant indices.

Significantly improves compile-time for these CTS tests, which could
previously timeout:
dEQP-VK.spirv_assembly.instruction.graphics.16bit_storage.struct_mixed_types.uniform_buffer_block_geom
dEQP-VK.spirv_assembly.instruction.graphics.16bit_storage.struct_mixed_types.uniform_geom
dEQP-VK.spirv_assembly.instruction.graphics.8bit_storage.struct_mixed_types.storage_buffer_geom
dEQP-VK.spirv_assembly.instruction.graphics.spirv_ids_abuse.lots_ids_geom

fossil-db (Navi):
Totals from 19 (0.01% of 137413) affected shaders:
SGPRs: 1728 -> 1688 (-2.31%)
VGPRs: 1176 -> 1168 (-0.68%)
CodeSize: 198496 -> 136580 (-31.19%)
MaxWaves: 154 -> 156 (+1.30%)
Instrs: 38889 -> 26029 (-33.07%)
Cycles: 446108 -> 1059924 (+137.59%); split: -0.91%, +138.51%
VMEM: 3245 -> 2926 (-9.83%)
SMEM: 850 -> 828 (-2.59%); split: +4.71%, -7.29%
VClause: 549 -> 533 (-2.91%)
SClause: 1810 -> 1522 (-15.91%)
Copies: 2209 -> 1705 (-22.82%); split: -22.95%, +0.14%
Branches: 854 -> 603 (-29.39%); split: -29.86%, +0.47%
PreSGPRs: 1512 -> 1506 (-0.40%); split: -0.53%, +0.13%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7161>
2020-10-22 12:07:45 +01:00
Caio Marcelo de Oliveira Filho
8cf0024432 nir: Use a switch in nir_lower_explicit_io_instr
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7255>
2020-10-21 12:00:09 -07:00
Erik Faye-Lund
33ccf0e9bc nir: drop unused alpha_ref_float
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7251>
2020-10-21 16:33:43 +00:00
Erik Faye-Lund
42ee423e3a nir: drop support for using load_alpha_ref_float
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7251>
2020-10-21 16:33:43 +00:00
Marek Olšák
233520035a nir: consider load_color intrinsics as both inputs and sysval in gathering
src/mesa expects this somewhere.

Acked-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6950>
2020-10-21 16:10:08 +00:00
Eric Anholt
fdbc45d1d4 nir: Only validate in passes that might have changed things.
If a pass returning boolean progress reports no change, we shouldn't need
to re-validate.  If a pass breaks the NIR but also fails to report
progress correctly, it would be up to the next pass to catch that.

This should hopefully help with test timeouts on
KHR-GL33.texture_swizzle.functional since switching softpipe to
nir-to-tgsi and enabling NIR validation in CI (27s to 20s on my system).

Suggested-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7239>
2020-10-21 05:00:17 +00:00
Jason Ekstrand
ef68f740a6 nir/lower_io: Assert non-zero power-of-two alignments
The way the ALIGN_POT macro works, an alignment of 0 may cause
ALIGN_POT(x, 0) to return 0 for any x.  Throw in an assert to guard
against this case.

Reviewed-by: Karol Herbst <kherbst@redhat.com>
Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7069>
2020-10-20 23:46:42 +02:00
Eric Anholt
d867e7c974 nir: Add an option to not lower source mods for f64/u64/i64.
TGSI can't handle them, but we want to use this pass for nir-to-tgsi.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3395>
2020-10-20 08:54:06 -07:00
Eric Anholt
c730feacc0 nir: Add a call to get a struct describing SSA liveness per instruction.
nir-to-tgsi will use this to release release temporaries for SSA storage
back to ureg's linear register allocation once they're dead.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3395>
2020-10-20 08:54:06 -07:00
Eric Anholt
a206b58157 nir: Add a block start/end ip to live instr index metadata.
I wanted it for the per-instruction live intervals metadata, and it's not
much to store in general.  Make the ip explicitly 32-bit, on suggestion by
jekstrand.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3395>
2020-10-20 08:54:06 -07:00
Eric Anholt
2f5d18403a nir: Replace nir_ssa_def->live_index with nir_instr->index.
live_index had two things going on: 0 meant the instr was an undef and
always dead, and otherwise ssa defs had increasing numbers by instruction
order.  We already have a field in the instruction for storing instruction
order, and ssa defs don't need that number to be contiguous (if you want a
compact per-ssa-def number, use ssa->index after reindexing).

We don't use ssa->index for this, because reindexing those would change
nir_print, and that would be rude to people trying to track what's
happening in optimization passes.

This openend up a hole in nir_ssa_def, so we move nir_ssa_def->index
toward the end to shrink the struct from 64 bytes to 56.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3395>
2020-10-20 08:54:01 -07:00
Eric Anholt
b6cb184e86 nir: Introduce nir_metadata_instr_index for nir_index_instr() being current.
This will be useful to remove the live_index field from nir_ssa_def.

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3395>
2020-10-20 08:53:36 -07:00
Timur Kristóf
d9cb9ff414 nir: Emit set_vertex_and_primitive_count for inactive streams.
This fixes issues in backends such as ACO which rely on always
getting this intrinsic to know the correct vertex and primitive
count.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7213>
2020-10-20 07:11:29 +00:00
Caio Marcelo de Oliveira Filho
f6d5dd825f nir: Add nir_intrinsic_terminate and nir_intrinsic_terminate_if
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7150>
2020-10-15 21:40:09 +00:00
Rhys Perry
f91b2fe384 nir/opt_load_store_vectorize: add some tests for discard/demote behaviour
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7163>
2020-10-15 18:21:44 +00:00
Rhys Perry
f8e971f511 nir/opt_load_store_vectorize: don't vectorize stores across demote
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Fixes: ce9205c03b ("nir: add a load/store vectorization pass")
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7163>
2020-10-15 18:21:44 +00:00
Alejandro Piñeiro
9b01598fe5 nir/lower_io_to_scalar: update io semantics on per-component inst
When we replace the original instruction with per-channel operations,
the new instruction should inherint the semantics of the original
instruction.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6721>
2020-10-14 22:54:58 +00:00
Daniel Schürmann
f503699e10 nir/opt_algebraic: optimize unpack_half_2x16_split_x(ushr, a, 16)
Same as extract_u16(a, 1)

Totals from 2021 (1.48% of 136546) affected shaders (RAVEN):
VGPRs: 129516 -> 129524 (+0.01%); split: -0.00%, +0.01%
CodeSize: 12485704 -> 12486600 (+0.01%); split: -0.00%, +0.01%
Instrs: 2435041 -> 2434999 (-0.00%); split: -0.00%, +0.00%
Cycles: 20952552 -> 20952624 (+0.00%); split: -0.00%, +0.00%
VMEM: 374492 -> 374212 (-0.07%); split: +0.01%, -0.08%
SMEM: 123309 -> 123291 (-0.01%); split: +0.00%, -0.02%
VClause: 64156 -> 64164 (+0.01%)
Copies: 191620 -> 191616 (-0.00%); split: -0.03%, +0.03%

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6777>
2020-10-14 15:31:38 +00:00
Rhys Perry
21422b1ff2 nir/opt_uniform_atomics: remove useless returns
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7117>
2020-10-14 09:53:34 +00:00
Iago Toral Quiroga
f4c754bcd1 nir: add a nir_get_ubo_size intrinsic
This is the same as nir_get_buffer_size but geared towards UBOs instead
of SSBOs. The new intrinsic is useful in Vulkan backends that need to
add bound checks on buffer accesses to honor the robust buffer access
feature.

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
2020-10-13 21:21:33 +00:00
Iago Toral Quiroga
6004ad9df1 nir/lower_io: add an option to lower interpolateAt functions
The option use_interpolated_input_intrinsics will lower these as well
as regular input loads. This is inconvenient for V3D, where we can
produce optimal code for regular input loads based on the input
variable layout qualifiers, so this change adds an option to only
lower instances of interpolateAt().

Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
2020-10-13 21:21:33 +00:00
Alejandro Piñeiro
10b79bf901 nir: include texture query lod as one of the ops that requires a sampler
In practice we found that we need this for v3d (specifically for cube
map arrays, as they don't support the default value for wrap_i, so a
sampler object is needed to override that value).

It is worth to note that the main reason behind this auxiliar method
was to identify those cases that we didn't have a sampler object
available for Vulkan. So far, we found that we have a sampler object
coming from nir always for that operation.

Fixes cube map array tests like the following:
dEQP-VK.glsl.texture_functions.query.texturequerylod.usamplercubearray_fragment

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6766>
2020-10-13 21:21:31 +00:00
Rhys Perry
a7114f3f46 nir/opt_uniform_atomics: don't optimize atomics twice
Applications sometimes already do this optimization themselves.

fossil-db (Navi):
Totals from 51 (0.04% of 135946) affected shaders:
CodeSize: 507484 -> 501860 (-1.11%)
Instrs: 99635 -> 98471 (-1.17%)
Cycles: 2421944 -> 2414780 (-0.30%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:21 +00:00
Rhys Perry
bc43650522 nir/opt_uniform_atomics: optimize image atomics
fossil-db (Navi):
Totals from 65 (0.05% of 135946) affected shaders:
SGPRs: 3792 -> 3784 (-0.21%)
VGPRs: 2784 -> 2716 (-2.44%)
CodeSize: 707492 -> 713080 (+0.79%)
MaxWaves: 873 -> 887 (+1.60%)
Instrs: 133376 -> 134524 (+0.86%)
Cycles: 3004772 -> 3011440 (+0.22%)

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:21 +00:00
Rhys Perry
f83bc5beb8 nir: add pass to optimize uniform atomics
This optimizes atomics with a uniform offset so that only one atomic
operation is done in the subgroup.

For shaders which do a very large amount of atomics, this can
significantly improve performance.

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:21 +00:00
Rhys Perry
37b6b0967c nir: allow divergence information to be updated when inserting instruction
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:21 +00:00
Rhys Perry
e1120f274f nir: move divergence analysis options to nir_shader_compiler_options
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:21 +00:00
Rhys Perry
1a912a550f nir: add last_invocation intrinsic
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:20 +00:00
Rhys Perry
8850a63161 radv/aco,nir/lower_subgroups: don't lower elect
ACO can implement this better.

fossil-db (Navi):
Totals from 33 (0.02% of 135946) affected shaders:
SGPRs: 1736 -> 1744 (+0.46%)
VGPRs: 1680 -> 1656 (-1.43%)
CodeSize: 246160 -> 245916 (-0.10%); split: -0.14%, +0.04%
MaxWaves: 449 -> 461 (+2.67%)
Instrs: 48301 -> 48266 (-0.07%); split: -0.12%, +0.05%
Cycles: 469740 -> 469240 (-0.11%); split: -0.18%, +0.08%

Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6558>
2020-10-13 12:47:20 +00:00
Mike Blumenkrantz
c31ababae3 nir: update ubo locations in nir_lower_uniforms_to_ubo
locations are important for these because they provide info about how
many block indices each ubo takes up

UBO arrays have nonzero values here. all non-array UBOs have either 0
for the base or nonzero for an io lowered block at an offset,
but only arrays need to be changed here because they're the only ones
with absolute values, whereas all the others are relative.

Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6272>
2020-10-13 12:31:40 +00:00
Rhys Perry
18f9fc919e spirv: add and use a generator id enum
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Cc: mesa-stable
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7062>
2020-10-12 11:07:38 +00:00
Jason Ekstrand
181d5f59b8 nir: Allow more deref modes in phis
In particular, OpenCL needs to allow shader_temp and function_temp
through because they're 100% real pointers.

Fixes piglit CL calls.cl

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7092>
2020-10-11 21:50:23 +00:00
Jose Maria Casanova Crespo
e7127b3468 nir/algebraic: optimize iand/ior of (n)eq zero when umax/umin not available
Before 8e1b75b330 ("nir/algebraic: optimize iand/ior of (n)eq zero") this
optimization didn't need the use of umax/umin. VC4 HW supports only signed
integer max/min operations.

lower_umin and lower_umax are added to allow enabling previous optimizations
behaviour for this cases.

Fixes: 8e1b75b330 ("nir/algebraic: optimize iand/ior of (n)eq zero")
Reviewed-by: Alejandro Piñeiro <apinheiro@igalia.com>
Reviewed-by: Daniel Schürmann <daniel@schuermann.dev>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7083>
2020-10-10 13:16:37 +02:00
Rhys Perry
5f2671bcc5 nir: return progress from nir_lower_io_to_scalar_early
Signed-off-by: Rhys Perry <pendingchaos02@gmail.com>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6891>
2020-10-09 15:47:59 +00:00
Timur Kristóf
f11f4a2a4d nir: Add ability to count primitives per stream.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6964>
2020-10-09 15:26:14 +02:00
Timur Kristóf
aac5adc3c2 nir: Count vertices per stream.
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6964>
2020-10-09 15:26:14 +02:00
Timur Kristóf
70b94adddb nir: Add ability to overwrite incomplete GS primitives.
After each end_primitive and at the end of the shader before emitting
set_vertex_and_primitive_count, we check if the primitive that is being
emitted has enough vertices or not, and we adjust the vertex and
primitive counters accordingly.

As a result, if the backend uses this option, the backend compiler
will not have to worry about discarding the unneeded vertices
and primitives.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6964>
2020-10-09 15:26:14 +02:00
Timur Kristóf
c977c369d3 nir: Add ability to count emitted GS vertices per primitive.
Add an option to nir_lower_gs_intrinsics so that it can also track
the number of emitted vertices per primitive, not just the total
vertex count.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6964>
2020-10-09 15:26:14 +02:00
Timur Kristóf
2be99012e9 nir: Add ability to count emitted GS primitives.
Add an option to nir_lower_gs_intrinsics which tells it to track
the number of emitted primitives, not just vertices. Additionally,
also make it per-stream.

Also rename the set_vertex_count intrinsic to
set_vertex_and_primitive_count.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6964>
2020-10-09 15:26:14 +02:00
Jason Ekstrand
06a5edf247 nir/opt_deref: Fix the vector bitcast optimization
It assumes the parent is a vector or scalar so we need to fail if it
isn't.

Fixes: 9190f82d57 "nir/opt_deref: Add an optimization for bitcasts"
Reviewed-by: Karol Herbst <kherbst@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7064>
2020-10-08 12:22:45 -05:00
Kristian H. Kristensen
826a10255f st/mesa: Add NV12 lowering to PIPE_FORMAT_R8_G8B8_420_UNORM
Some GPUs can sample biplanar formats like NV12 natively, returning
the YUV values. Add a lowering type that uses that for sampling and
relies on existing colorspace conversions.

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6693>
2020-10-08 09:37:14 +00:00
Jason Ekstrand
2fa7c79045 spirv: Move nir_lower_libclc to src/compiler/spirv
This puts it in a shared place where everyone can get at it.

Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7034>
2020-10-07 21:52:04 +00:00
Jason Ekstrand
ef453f5439 spirv: Add a shared libclc loader
Reviewed-by: Jesse Natalie <jenatali@microsoft.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7034>
2020-10-07 21:52:04 +00:00
Tony Wasserka
0ef2f1d4a0 nir: Fix unaligned pointer access
This was observed with the intel vulkan driver when running
dEQP-VK.spirv_assembly.instruction.compute.float32.comparison_1.modfstruct
with ubsan enabled.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6728>
2020-10-07 19:50:01 +00:00
Tony Wasserka
6a9dc75cc2 nir: Fix undefined behavior due to signed integer multiplication overflows
Notably this happened when applying constant folding on the intermediate
computations generated from nir_lower_idiv.

Reviewed-by: Rhys Perry <pendingchaos02@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6728>
2020-10-07 19:50:01 +00:00
Marek Olšák
3f1b35a2f0 nir: add new helper passes that lower uniforms to literals
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6955>
2020-10-07 17:30:12 +00:00
Marek Olšák
1e7d82c881 nir/algebraic: always lower idiv to shifts if bitops are allowed
why would you want anything else

The only platform significantly affected by this is Intel where `lower_idiv`
is not set today but neither is `lower_bitops`.  There it seems to still be
a boon over-all.

Shader-db results on Ice Lake:

    total instructions in shared programs: 19719051 -> 19735766 (0.08%)
    instructions in affected programs: 106992 -> 123707 (15.62%)
    helped: 0
    HURT: 445
    HURT stats (abs)   min: 3 max: 295 x̄: 37.56 x̃: 44
    HURT stats (rel)   min: 0.16% max: 33.33% x̄: 19.60% x̃: 19.38%
    95% mean confidence interval for instructions value: 33.60 41.53
    95% mean confidence interval for instructions %-change: 18.97% 20.23%
    Instructions are HURT.

    total loops in shared programs: 5973 -> 5973 (0.00%)
    loops in affected programs: 0 -> 0
    helped: 0
    HURT: 0

    total cycles in shared programs: 489405810 -> 486917482 (-0.51%)
    cycles in affected programs: 4759097 -> 2270769 (-52.29%)
    helped: 406
    HURT: 34
    helped stats (abs) min: 2 max: 64661 x̄: 6291.95 x̃: 3126
    helped stats (rel) min: 0.02% max: 79.42% x̄: 43.32% x̃: 55.83%
    HURT stats (abs)   min: 2 max: 29376 x̄: 1947.12 x̃: 30
    HURT stats (rel)   min: 0.04% max: 23.82% x̄: 4.66% x̃: 1.33%
    95% mean confidence interval for cycles value: -6753.06 -4557.52
    95% mean confidence interval for cycles %-change: -42.60% -36.63%
    Cycles are helped.

    total spills in shared programs: 12481 -> 12482 (<.01%)
    spills in affected programs: 47 -> 48 (2.13%)
    helped: 0
    HURT: 1

    total fills in shared programs: 12816 -> 12819 (0.02%)
    fills in affected programs: 71 -> 74 (4.23%)
    helped: 0
    HURT: 1

    total sends in shared programs: 1010124 -> 1010124 (0.00%)
    sends in affected programs: 0 -> 0
    helped: 0
    HURT: 0

    LOST:   1
    GAINED: 0

Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6963>
2020-10-07 10:50:53 -04:00
Samuel Pitoiset
4c54f05915 nir/constant_folding: init nir_const_value to zero
To avoid NIR validation failures.

Fixes: 9df1ff3678 ("nir/constant_folding: Use the builder")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7035>
2020-10-06 20:27:39 +00:00
Jason Ekstrand
60825a542d nir/constant_folding: Fold load_deref of nir_var_mem_constant
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6974>
2020-10-06 15:42:03 +00:00
Jason Ekstrand
481b7538ab nir: Validate constant initializers
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6974>
2020-10-06 15:42:03 +00:00