Jason Ekstrand [Fri, 12 Jul 2019 13:20:25 +0000 (08:20 -0500)]
anv: Properly compute image usage in CreateImageView
With separate stencil usage, we can't just grab the usage from the image
directly and have to consider the per-aspect usage instead.
Fixes: 1be38f9178 "anv:Use VK_EXT_separate_stencil_usage to avoid..."
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:18 +0000 (12:17 +0200)]
radv/gfx10: emit DISABLE_CONSERVATIVE_ZPASS_COUNTS
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:17 +0000 (12:17 +0200)]
radv/gfx10: init more registers in the graphics preamble
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:16 +0000 (12:17 +0200)]
radv/gfx10: set HS/GS/CS.WGP_MODE
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:15 +0000 (12:17 +0200)]
radv/gfx10: emit GE_PC_ALLOC
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:14 +0000 (12:17 +0200)]
radv/gfx10: enable vertex shaders without export parameters
GFX10 allows this.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:13 +0000 (12:17 +0200)]
radv/gfx10: launch 2 compute waves per CU before going onto the next CU
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:12 +0000 (12:17 +0200)]
radv: use ac_get_compute_resource_limits()
No behaviour change.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 10:17:11 +0000 (12:17 +0200)]
ac: import ac_get_compute_resource_limits() from RadeonSI
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Alyssa Rosenzweig [Thu, 11 Jul 2019 22:46:22 +0000 (15:46 -0700)]
panfrost: Initialize shift/extra_flags
Don't rely on them being preinitialized to zero; this can cause junk to
appear on the wire.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Alyssa Rosenzweig [Thu, 11 Jul 2019 22:34:56 +0000 (15:34 -0700)]
panfrost: Fix build warnings
A bunch of these are from asserts not being compiled in 32-bit mode
(once Erik's ASSERTABLE stuff is merged, we'll want to switch).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Samuel Pitoiset [Fri, 12 Jul 2019 11:59:08 +0000 (13:59 +0200)]
radv/gfx10: invalidate everything in L2 when shaders read data
This includes metadata as well. On GFX10, we have to invalidate
the L2 metadata cache when shaders read DCC.
Note that we still have to implement GFX10 coherency by
introducing INV_L2_METATADA but for now just flush L2.
This fixes a corruption with DCC and Talos.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 09:12:58 +0000 (11:12 +0200)]
radv/gfx10: fix wrong emission of GE_CNTL
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Fri, 12 Jul 2019 09:12:57 +0000 (11:12 +0200)]
radv: add more assertions to make sure packets are correctly emitted
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Alejandro Piñeiro [Tue, 25 Jun 2019 13:02:56 +0000 (15:02 +0200)]
v3d: use inc/dec tmu operation with image atomic sub/add of 1
This allows to remove a mov of 1/-1, as it is implicit with the
operation.
As with atomic inc/dec/add, usual shader-db set doesn't include any
GLES shader using it. So using as workaround vk-gl-cts shaders, we get
this:
total instructions in shared programs:
1217013 ->
1217006 (<.01%)
instructions in affected programs: 53 -> 46 (-13.21%)
helped: 2
HURT: 0
One of the helped shader went from 40 to 34 instructions.
Reviewed-by: Eric Anholt <eric@anholt.net>
Alejandro Piñeiro [Thu, 27 Jun 2019 12:16:15 +0000 (14:16 +0200)]
v3d: refactor some code from v3d40_vir_emit_image_load_store
And moved to new auxiliar method v3d40_image_load_store_tmu_op,
equivalent to the nir_to_nir v3d_general_tmu_op, to clean-up a little.
Reviewed-by: Eric Anholt <eric@anholt.net>
Alejandro Piñeiro [Wed, 19 Jun 2019 11:17:41 +0000 (13:17 +0200)]
v3d: use inc/dec tmu operation with atomic sub/add of 1
Among other things, this avoid the need of loading 1/-1 constants (so
one less operation).
The removed comment suggest the option of adding support on NIR for
inc/dec. Intel just uses an auxiliar method to get which hw operation
is needed, so no lowering is needed. And at the same time, being so
small, seems unreasonable to try to add a general one on NIR
itself. It is more easy to just adapt the method here (that is what
the patch does right now).
It is worth to note that we are not getting any change on shader-db
stats because all those methods are used on the usual shader-db set
with shaders needing GLSL > 4.2. In general there aren't too many GLSL
ES 3.1 tests.
As an alternative, we captured the GLES3/GLSL31/GLS32 used on
vk-gl-cts, even if that is not a real life usage of shaders. With
those we get the following:
total instructions in shared programs:
1217022 ->
1217013 (<.01%)
instructions in affected programs: 117 -> 108 (-7.69%)
helped: 6
HURT: 0
helped stats (abs) min: 1 max: 2 x̄: 1.50 x̃: 1
helped stats (rel) min: 3.57% max: 10.00% x̄: 8.09% x̃: 9.09%
95% mean confidence interval for instructions value: -2.07 -0.93
95% mean confidence interval for instructions %-change: -10.54% -5.64%
Instructions are helped.
Note that the shaders helped are really low because most of the
vk-gl-cts tests using AtomicInc/Dec/Add are mostly used on compute
shaders. Although right now there is a branch around with CS support,
the usual is doing the stats against master.
Reviewed-by: Eric Anholt <eric@anholt.net>
Alejandro Piñeiro [Tue, 2 Jul 2019 10:45:49 +0000 (12:45 +0200)]
v3d: remove redefinition of tmu operations on nir_to_vir
They are already defined, although is a slightly different format on
the generated packet headers, so it was needed to change how it is
used on nir_to_vir.
In addition to allow to remove some duplicated headers, it will allow
to define just one get_op_for_atomic_add aux method later to support
using inc/dec instead of add of 1/-1.
Reviewed-by: Eric Anholt <eric@anholt.net>
Alejandro Piñeiro [Tue, 2 Jul 2019 10:02:04 +0000 (12:02 +0200)]
v3d: tweak initial comment on pack generator script
As the files it mentions to use as reference has slightly different
names.
Reviewed-by: Eric Anholt <eric@anholt.net>
Yevhenii Kolesnikov [Wed, 10 Jul 2019 10:44:44 +0000 (13:44 +0300)]
glsl/link_varyings: Fix hash table leak
Hash tables were not destroyed at return.
v2: Use ralloc_context (Eric Anholt)
Signed-off-by: Yevhenii Kolesnikov <yevhenii.kolesnikov@globallogic.com>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Kenneth Graunke [Mon, 1 Apr 2019 22:27:01 +0000 (15:27 -0700)]
iris: Simplify devinfo access in calculate_result_on_gpu()
We have devinfo, no need for screen->devinfo.
Iago Toral Quiroga [Tue, 9 Jul 2019 10:24:43 +0000 (12:24 +0200)]
v3d: remove unused definitions
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:56:49 +0000 (09:56 +0200)]
v3d: move implementation of some intrinsics to separate helpers
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Thu, 11 Jul 2019 08:56:17 +0000 (10:56 +0200)]
v3d: emit correct lowering for logic ops with RGB10A2 render targets
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Mon, 8 Jul 2019 10:31:38 +0000 (12:31 +0200)]
v3d: emit correct lowering for logic ops with integer render targets
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:38:39 +0000 (09:38 +0200)]
v3d: add lowering for OpenGL logic operations
This implements support for OpenGL logic operations by emitting code to read
from the TLB if needed and blending the fragment output accordingly. It is
similar to VC4's blend lowering pass, but exclusive to logic operations, since
blending is otherwise supported in hardware.
The pass doesn't handle MSAA targets yet.
Fixes the following piglit tests:
spec/!opengl 1.0/gl-1.0-logicop/*
spec/!opengl 1.1/gl-1.1-xor
spec/!opengl 1.1/gl-1.1-xor-copypixels
It also fixes text cursor rendering in Libreoffice with the GTK+2 theme, which
is rendered via glamor using the XOR logic operation.
v2: fix checks for allowed variable location and maximum render target (Eric)
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Thu, 4 Jul 2019 10:22:40 +0000 (12:22 +0200)]
v3d: acquire scoreboard lock before first tlb read
Until now we have always been emitting our scoreboard locks on the last thread
switch to improve parallelism. We did this by emitting our last thread switch
right before our tlb writes at the very end of the program, where we know that
we are outside control flow.
Unfortunately, this strategy is not valid when we have tlb color reads too, as
these will happen before this point in the program and can happen inside
control flow.
To fix this we always emit a thread switch before the first tlb load and if we
see additional thread switches after that point, we change the strategy to lock
on the first thread switch.
v2: change the solution so it is expected to work in more scenarios (Eric).
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:30:43 +0000 (09:30 +0200)]
v3d: implement tile buffer color read intrinsic
We will be emitting this intrinsic to signal TLB color loads when we implement
OpenGL logic operations, where we need to blend the fragment shader color
output with the existing color in the render target.
Per-sample TLB reads are not supported yet.
v2: fix the offset into the color_reads array (Eric).
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Tue, 9 Jul 2019 07:15:02 +0000 (09:15 +0200)]
nir: add a new v3d-specific intrinsic for tile buffer color reads
This is intended to be used, for example, with OpenGL logic operations. It
takes a render target as source and a sample index in the base index for
MSAA color reads.
v2: drop the CAN_ELIMINATE and CAN_REORDER flags (Eric).
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:19:52 +0000 (09:19 +0200)]
v3d: fix size of color_reads and sample_colors arrays
We need to scale the size of these arrays to consider up to
V3D_MAX_DRAW_BUFFERS render targets and 4 components per color.
v2: we want to store each color component separately, so scale by 4 too.
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:14:25 +0000 (09:14 +0200)]
v3d: add color formats and swizzles to the fragment shader key
We are going to need these very soon to emit correct reads from the tlb
to implement logic operations.
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:09:11 +0000 (09:09 +0200)]
v3d: add helpers to emit ldtlb and ldtlbu signals
The ldtlbu version will read an implicit uniform with the TLB read
specifier and should be used for the first read in a sequence
of TLB reads (unless the default configuration is valid, in which
case we can use ldtlb). The ldtlb version is used for any subsequent
TLB read in the sequence.
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Fri, 5 Jul 2019 08:04:32 +0000 (10:04 +0200)]
v3d: handle tlb read dependency tracking as if they were writes
Tile buffer reads are emitted as ordered sequences and cannot be reordered.
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 10:02:11 +0000 (12:02 +0200)]
v3d: instructions with the ldtlb and ldtlbu signals are tlb instructions
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Fri, 5 Jul 2019 07:47:05 +0000 (09:47 +0200)]
v3d: tlb loads cannot be removed
Loads from the tile buffer are emitted in ordered sequences so
we cannot eliminate or reorder any of them.
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:07:22 +0000 (09:07 +0200)]
v3d: the ldtlbu signal reads an implicit uniform
Reviewed-by: Eric Anholt <eric@anholt.net>
Iago Toral Quiroga [Wed, 3 Jul 2019 07:01:22 +0000 (09:01 +0200)]
v3d: handle ldtlb and ldtlbu signals during disassembly
We already have code to print these signals but the early return in the code
that checks if any signals are present present was missing the checks for them,
so it would skip printing them unless they were paired with other signals.
Reviewed-by: Eric Anholt <eric@anholt.net>
Samuel Pitoiset [Thu, 11 Jul 2019 16:03:56 +0000 (18:03 +0200)]
radv: report shader stage name when dumping LLVM IR
For debugging purposes.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 16:03:55 +0000 (18:03 +0200)]
radv: tidy up radv_get_shader_name() and add NGG stages
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 13:51:40 +0000 (15:51 +0200)]
radv/gfx10: update OVERWRITE_COMBINER_{MRT_SHARING,WATERMARK}
DCC related, mirror RadeonSI.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Dave Airlie <airlied@redhat.com
Samuel Pitoiset [Thu, 11 Jul 2019 16:32:56 +0000 (18:32 +0200)]
radv/gfx10: do not set alignment on the ngg_emit pointer
This is invalid and this fixes a crash in LLVM.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 15:02:13 +0000 (17:02 +0200)]
radv/gfx10: fix exporting clip/cull distances for GS
This fixes dEQP-VK.clipping.user_defined.clip_distance.*geom*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 15:02:12 +0000 (17:02 +0200)]
radv/gfx10: fix exporting the subpass view index for GS
This fixes dEQP-VK.multiview.*geometry*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Timothy Arceri [Mon, 1 Jul 2019 02:25:19 +0000 (12:25 +1000)]
mesa: save/restore SSO flag when using ARB_get_program_binary
Without this the restored program will fail the pipeline validation
checks when we attempt to use an SSO program.
Fixes: c20fd744fef1 ("mesa: Add Mesa ARB_get_program_binary helper functions")
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111010
Alyssa Rosenzweig [Thu, 11 Jul 2019 20:15:17 +0000 (13:15 -0700)]
pan/midgard: Correct component count clamping PSIZ
Kind of a funky corner case that does not (as far as I know) apply to
organic shaders from GLES but does pop up in generated shaders from the
fixed-function desktop pipeline.
Fixes: bb483a91663f ("panfrost: Clamp point size")
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Alyssa Rosenzweig [Thu, 11 Jul 2019 17:12:12 +0000 (10:12 -0700)]
panfrost: Remove unused display target field
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Alyssa Rosenzweig [Thu, 11 Jul 2019 19:23:48 +0000 (12:23 -0700)]
panfrost/ci: Update expectations
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Samuel Pitoiset [Thu, 11 Jul 2019 19:35:46 +0000 (21:35 +0200)]
radv: only enable the GS copy shader stage if GS is enabled
Ooops.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Eric Anholt [Thu, 11 Jul 2019 18:35:12 +0000 (11:35 -0700)]
freedreno: Add dependency on the xml build to the winsys.
The screen header includes the common xml, and otherwise we might race
to build before it's done.
Fixes: e03259974e2f ("freedreno: Generate headers from xml files")
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
Kenneth Graunke [Mon, 8 Jul 2019 00:14:15 +0000 (17:14 -0700)]
iris: Disable SIMD32 when using a 16x MSAA framebuffer.
We weren't doing this documented workaround because it's sorta painful.
Ian Romanick [Mon, 6 Aug 2018 20:05:08 +0000 (13:05 -0700)]
nir/algebraic: Recognize open-coded flrp(a, b, a)
No shader-db changes Ice Lake, Iron Lake, or GM45 as these platforms
lack a LRP instruction.
v2: Remove flrp@64 cases. Since Gen11 removes flrp@32, it seems
unlikely that we'll ever have a flrp@64. Should that occur, the cases
can be added back.
All Gen6-Gen9 platforms had similar results. (Skylake shown)
total instructions in shared programs:
15041996 ->
15041184 (<.01%)
instructions in affected programs: 71776 -> 70964 (-1.13%)
helped: 312
HURT: 0
helped stats (abs) min: 2 max: 3 x̄: 2.60 x̃: 3
helped stats (rel) min: 0.36% max: 4.55% x̄: 1.75% x̃: 1.28%
95% mean confidence interval for instructions value: -2.66 -2.55
95% mean confidence interval for instructions %-change: -1.89% -1.61%
Instructions are helped.
total cycles in shared programs:
354303333 ->
354301807 (<.01%)
cycles in affected programs: 433742 -> 432216 (-0.35%)
helped: 206
HURT: 78
helped stats (abs) min: 2 max: 244 x̄: 21.02 x̃: 8
helped stats (rel) min: 0.06% max: 19.59% x̄: 1.72% x̃: 0.82%
HURT stats (abs) min: 1 max: 220 x̄: 35.95 x̃: 10
HURT stats (rel) min: 0.07% max: 30.48% x̄: 2.53% x̃: 0.56%
95% mean confidence interval for cycles value: -10.68 -0.06
95% mean confidence interval for cycles %-change: -0.99% -0.12%
Cycles are helped.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Thu, 25 Apr 2019 06:49:30 +0000 (23:49 -0700)]
nir/algebraic: Rearrange 1-((1-a) * (1-b)) into flrp-friendly form
No shader-db changes Ice Lake, Iron Lake, or GM45 as these platforms
lack a LRP instruction.
v2: Convert the pattern directly to flrp. There were negligible
improvements on Gen4 and Gen5, and Gen11 was actually hurt. I believe
the problem is this optimization conflicts with the (1-x)*y =>
ffma(-x, y, y) optimization on Gen11.
Skylake
total instructions in shared programs:
15046487 ->
15041996 (-0.03%)
instructions in affected programs: 194681 -> 190190 (-2.31%)
helped: 880
HURT: 20
helped stats (abs) min: 1 max: 19 x̄: 5.13 x̃: 4
helped stats (rel) min: 0.19% max: 36.36% x̄: 4.85% x̃: 3.33%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.11% max: 1.06% x̄: 0.28% x̃: 0.17%
95% mean confidence interval for instructions value: -5.25 -4.73
95% mean confidence interval for instructions %-change: -5.11% -4.36%
Instructions are helped.
total cycles in shared programs:
354340839 ->
354303333 (-0.01%)
cycles in affected programs:
1753622 ->
1716116 (-2.14%)
helped: 786
HURT: 182
helped stats (abs) min: 1 max: 1842 x̄: 56.52 x̃: 22
helped stats (rel) min: 0.03% max: 43.17% x̄: 3.90% x̃: 2.84%
HURT stats (abs) min: 1 max: 440 x̄: 37.99 x̃: 9
HURT stats (rel) min: 0.03% max: 29.37% x̄: 1.96% x̃: 0.32%
95% mean confidence interval for cycles value: -45.90 -31.59
95% mean confidence interval for cycles %-change: -3.09% -2.50%
Cycles are helped.
All Gen6-Gen8 platforms had similar results. (Broadwell shown)
total instructions in shared programs:
15055907 ->
15051466 (-0.03%)
instructions in affected programs: 196370 -> 191929 (-2.26%)
helped: 871
HURT: 26
helped stats (abs) min: 1 max: 19 x̄: 5.13 x̃: 4
helped stats (rel) min: 0.19% max: 36.36% x̄: 4.76% x̃: 3.27%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.11% max: 1.06% x̄: 0.24% x̃: 0.12%
95% mean confidence interval for instructions value: -5.21 -4.69
95% mean confidence interval for instructions %-change: -4.99% -4.24%
Instructions are helped.
total cycles in shared programs:
387729170 ->
387699745 (<.01%)
cycles in affected programs:
1816409 ->
1786984 (-1.62%)
helped: 788
HURT: 172
helped stats (abs) min: 1 max: 662 x̄: 47.29 x̃: 22
helped stats (rel) min: 0.03% max: 31.26% x̄: 3.55% x̃: 2.76%
HURT stats (abs) min: 1 max: 404 x̄: 45.59 x̃: 14
HURT stats (rel) min: 0.03% max: 22.92% x̄: 1.53% x̃: 0.43%
95% mean confidence interval for cycles value: -35.69 -25.61
95% mean confidence interval for cycles %-change: -2.88% -2.40%
Cycles are helped.
total fills in shared programs: 34712 -> 34710 (<.01%)
fills in affected programs: 7 -> 5 (-28.57%)
helped: 1
HURT: 0
LOST: 0
GAINED: 2
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Thu, 6 Jun 2019 00:23:11 +0000 (17:23 -0700)]
nir/algebraic: Reassociate fadd into fmul in DPH-like pattern
Moving the add to the other end of the sequence allows it to be fused
into an FMA.
Ice Lake
total instructions in shared programs:
17173074 ->
16933147 (-1.40%)
instructions in affected programs:
7938745 ->
7698818 (-3.02%)
helped: 35583
HURT: 90
helped stats (abs) min: 1 max: 716 x̄: 6.75 x̃: 6
helped stats (rel) min: 0.10% max: 53.04% x̄: 5.29% x̃: 3.45%
HURT stats (abs) min: 1 max: 41 x̄: 2.46 x̃: 1
HURT stats (rel) min: 0.32% max: 8.33% x̄: 1.41% x̃: 0.77%
95% mean confidence interval for instructions value: -6.80 -6.65
95% mean confidence interval for instructions %-change: -5.32% -5.22%
Instructions are helped.
total cycles in shared programs:
360881386 ->
359533568 (-0.37%)
cycles in affected programs:
189489144 ->
188141326 (-0.71%)
helped: 27250
HURT: 6707
helped stats (abs) min: 1 max: 21997 x̄: 62.15 x̃: 16
helped stats (rel) min: <.01% max: 70.69% x̄: 4.04% x̃: 2.35%
HURT stats (abs) min: 1 max: 3507 x̄: 51.56 x̃: 14
HURT stats (rel) min: <.01% max: 77.26% x̄: 2.72% x̃: 1.27%
95% mean confidence interval for cycles value: -44.70 -34.68
95% mean confidence interval for cycles %-change: -2.75% -2.65%
Cycles are helped.
total spills in shared programs: 8943 -> 8829 (-1.27%)
spills in affected programs: 625 -> 511 (-18.24%)
helped: 6
HURT: 3
total fills in shared programs: 21815 -> 21719 (-0.44%)
fills in affected programs: 1653 -> 1557 (-5.81%)
helped: 7
HURT: 10
LOST: 11
GAINED: 3
Skylake and Broadwell had similar results. (Skylake shown)
total instructions in shared programs:
15271996 ->
15040882 (-1.51%)
instructions in affected programs:
7193699 ->
6962585 (-3.21%)
helped: 33985
HURT: 30
helped stats (abs) min: 1 max: 260 x̄: 6.80 x̃: 6
helped stats (rel) min: 0.10% max: 30.00% x̄: 5.54% x̃: 3.85%
HURT stats (abs) min: 1 max: 41 x̄: 4.00 x̃: 3
HURT stats (rel) min: 0.20% max: 2.16% x̄: 1.46% x̃: 1.72%
95% mean confidence interval for instructions value: -6.87 -6.72
95% mean confidence interval for instructions %-change: -5.59% -5.48%
Instructions are helped.
total cycles in shared programs:
355520785 ->
354253799 (-0.36%)
cycles in affected programs:
185869148 ->
184602162 (-0.68%)
helped: 25824
HURT: 6287
helped stats (abs) min: 1 max: 21997 x̄: 61.66 x̃: 16
helped stats (rel) min: <.01% max: 42.05% x̄: 4.18% x̃: 2.41%
HURT stats (abs) min: 1 max: 3327 x̄: 51.76 x̃: 14
HURT stats (rel) min: <.01% max: 101.62% x̄: 2.80% x̃: 1.28%
95% mean confidence interval for cycles value: -44.70 -34.21
95% mean confidence interval for cycles %-change: -2.87% -2.76%
Cycles are helped.
total spills in shared programs: 8835 -> 8818 (-0.19%)
spills in affected programs: 613 -> 596 (-2.77%)
helped: 5
HURT: 2
total fills in shared programs: 21738 -> 21744 (0.03%)
fills in affected programs: 1348 -> 1354 (0.45%)
helped: 5
HURT: 11
LOST: 0
GAINED: 12
Haswell
total instructions in shared programs:
13447102 ->
13381508 (-0.49%)
instructions in affected programs:
3770735 ->
3705141 (-1.74%)
helped: 11999
HURT: 29
helped stats (abs) min: 1 max: 409 x̄: 5.60 x̃: 3
helped stats (rel) min: 0.10% max: 20.00% x̄: 2.38% x̃: 1.87%
HURT stats (abs) min: 3 max: 750 x̄: 54.90 x̃: 3
HURT stats (rel) min: 0.12% max: 125.30% x̄: 9.96% x̃: 1.82%
95% mean confidence interval for instructions value: -5.71 -5.19
95% mean confidence interval for instructions %-change: -2.39% -2.30%
Instructions are helped.
total cycles in shared programs:
376342236 ->
375690458 (-0.17%)
cycles in affected programs:
155699021 ->
155047243 (-0.42%)
helped: 8397
HURT: 2876
helped stats (abs) min: 1 max: 20248 x̄: 109.87 x̃: 18
helped stats (rel) min: <.01% max: 40.71% x̄: 2.23% x̃: 1.49%
HURT stats (abs) min: 1 max: 15414 x̄: 94.15 x̃: 22
HURT stats (rel) min: <.01% max: 432.49% x̄: 3.15% x̃: 1.41%
95% mean confidence interval for cycles value: -67.64 -48.00
95% mean confidence interval for cycles %-change: -0.99% -0.74%
Cycles are helped.
total spills in shared programs: 23134 -> 23184 (0.22%)
spills in affected programs: 1675 -> 1725 (2.99%)
helped: 13
HURT: 11
total fills in shared programs: 34550 -> 34686 (0.39%)
fills in affected programs: 1421 -> 1557 (9.57%)
helped: 13
HURT: 11
LOST: 0
GAINED: 11
Ivy Bridge
total instructions in shared programs:
12019642 ->
11987285 (-0.27%)
instructions in affected programs:
1532236 ->
1499879 (-2.11%)
helped: 5522
HURT: 110
helped stats (abs) min: 1 max: 312 x̄: 6.22 x̃: 3
helped stats (rel) min: 0.16% max: 20.00% x̄: 2.46% x̃: 1.88%
HURT stats (abs) min: 1 max: 750 x̄: 18.07 x̃: 3
HURT stats (rel) min: 0.09% max: 125.30% x̄: 3.42% x̃: 1.15%
95% mean confidence interval for instructions value: -6.25 -5.24
95% mean confidence interval for instructions %-change: -2.43% -2.26%
Instructions are helped.
total cycles in shared programs:
180214667 ->
179761900 (-0.25%)
cycles in affected programs:
31448723 ->
30995956 (-1.44%)
helped: 7191
HURT: 2838
helped stats (abs) min: 1 max: 17680 x̄: 88.47 x̃: 17
helped stats (rel) min: <.01% max: 50.45% x̄: 2.16% x̃: 1.40%
HURT stats (abs) min: 1 max: 15540 x̄: 64.63 x̃: 24
HURT stats (rel) min: 0.02% max: 435.17% x̄: 3.10% x̃: 1.51%
95% mean confidence interval for cycles value: -53.34 -36.95
95% mean confidence interval for cycles %-change: -0.81% -0.53%
Cycles are helped.
total spills in shared programs: 3599 -> 3642 (1.19%)
spills in affected programs: 1180 -> 1223 (3.64%)
helped: 12
HURT: 2
total fills in shared programs: 4031 -> 4162 (3.25%)
fills in affected programs: 876 -> 1007 (14.95%)
helped: 12
HURT: 2
LOST: 6
GAINED: 5
Sandy Bridge
total instructions in shared programs:
10850686 ->
10822890 (-0.26%)
instructions in affected programs:
1247986 ->
1220190 (-2.23%)
helped: 4699
HURT: 102
helped stats (abs) min: 1 max: 104 x̄: 6.02 x̃: 3
helped stats (rel) min: 0.15% max: 17.65% x̄: 2.44% x̃: 1.88%
HURT stats (abs) min: 1 max: 16 x̄: 4.70 x̃: 3
HURT stats (rel) min: 0.09% max: 3.85% x̄: 1.11% x̃: 1.10%
95% mean confidence interval for instructions value: -6.10 -5.47
95% mean confidence interval for instructions %-change: -2.42% -2.30%
Instructions are helped.
total cycles in shared programs:
154044149 ->
153920095 (-0.08%)
cycles in affected programs:
26037392 ->
25913338 (-0.48%)
helped: 5974
HURT: 2521
helped stats (abs) min: 1 max: 1802 x̄: 35.42 x̃: 16
helped stats (rel) min: <.01% max: 35.80% x̄: 1.43% x̃: 0.84%
HURT stats (abs) min: 1 max: 862 x̄: 34.73 x̃: 20
HURT stats (rel) min: 0.01% max: 36.33% x̄: 1.67% x̃: 0.85%
95% mean confidence interval for cycles value: -16.31 -12.90
95% mean confidence interval for cycles %-change: -0.56% -0.45%
Cycles are helped.
total spills in shared programs: 2876 -> 2957 (2.82%)
spills in affected programs: 592 -> 673 (13.68%)
helped: 6
HURT: 35
total fills in shared programs: 3157 -> 3134 (-0.73%)
fills in affected programs: 402 -> 379 (-5.72%)
helped: 6
HURT: 0
LOST: 5
GAINED: 11
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Mon, 6 Aug 2018 20:07:59 +0000 (13:07 -0700)]
nir/algebraic: Recognize open-coded flrp(-1, 1, a) and flrp(1, -1, a)
v2: Remove flrp@64 cases. Since Gen11 removes flrp@32, it seems
unlikely that we'll ever have a flrp@64. Should that occur, the cases
can be added back.
v3: Add a couple more patterns that just move the negation around.
No shader-db changes Ice Lake, Iron Lake, or GM45 as these platforms
lack a LRP instruction.
Skylake
total instructions in shared programs:
15279687 ->
15256058 (-0.15%)
instructions in affected programs:
4344440 ->
4320811 (-0.54%)
helped: 23455
HURT: 18
helped stats (abs) min: 1 max: 21 x̄: 1.01 x̃: 1
helped stats (rel) min: 0.02% max: 13.33% x̄: 0.86% x̃: 0.65%
HURT stats (abs) min: 1 max: 2 x̄: 1.06 x̃: 1
HURT stats (rel) min: 0.13% max: 1.16% x̄: 0.43% x̃: 0.34%
95% mean confidence interval for instructions value: -1.01 -1.00
95% mean confidence interval for instructions %-change: -0.87% -0.85%
Instructions are helped.
total cycles in shared programs:
355593755 ->
355339981 (-0.07%)
cycles in affected programs:
162089552 ->
161835778 (-0.16%)
helped: 20467
HURT: 7158
helped stats (abs) min: 1 max: 2074 x̄: 29.00 x̃: 6
helped stats (rel) min: <.01% max: 35.71% x̄: 1.71% x̃: 0.58%
HURT stats (abs) min: 1 max: 4814 x̄: 47.46 x̃: 11
HURT stats (rel) min: <.01% max: 125.43% x̄: 2.88% x̃: 0.98%
95% mean confidence interval for cycles value: -10.39 -7.98
95% mean confidence interval for cycles %-change: -0.57% -0.47%
Cycles are helped.
total spills in shared programs: 8843 -> 8835 (-0.09%)
spills in affected programs: 190 -> 182 (-4.21%)
helped: 2
HURT: 0
total fills in shared programs: 21738 -> 21738 (0.00%)
fills in affected programs: 372 -> 372 (0.00%)
helped: 1
HURT: 1
LOST: 12
GAINED: 22
Broadwell
total instructions in shared programs:
15290523 ->
15266818 (-0.16%)
instructions in affected programs:
4314738 ->
4291033 (-0.55%)
helped: 23391
HURT: 11
helped stats (abs) min: 1 max: 119 x̄: 1.02 x̃: 1
helped stats (rel) min: 0.02% max: 13.33% x̄: 0.86% x̃: 0.65%
HURT stats (abs) min: 1 max: 189 x̄: 18.09 x̃: 1
HURT stats (rel) min: 0.11% max: 5.39% x̄: 0.98% x̃: 0.50%
95% mean confidence interval for instructions value: -1.04 -0.99
95% mean confidence interval for instructions %-change: -0.87% -0.85%
Instructions are helped.
total cycles in shared programs:
388911660 ->
388830827 (-0.02%)
cycles in affected programs:
172903324 ->
172822491 (-0.05%)
helped: 15601
HURT: 13269
helped stats (abs) min: 1 max: 1986 x̄: 29.18 x̃: 6
helped stats (rel) min: <.01% max: 36.60% x̄: 1.74% x̃: 0.55%
HURT stats (abs) min: 1 max: 14904 x̄: 28.21 x̃: 6
HURT stats (rel) min: <.01% max: 102.58% x̄: 1.77% x̃: 0.60%
95% mean confidence interval for cycles value: -4.20 -1.40
95% mean confidence interval for cycles %-change: -0.17% -0.08%
Cycles are helped.
total spills in shared programs: 23110 -> 23069 (-0.18%)
spills in affected programs: 656 -> 615 (-6.25%)
helped: 3
HURT: 1
total fills in shared programs: 34399 -> 34398 (<.01%)
fills in affected programs: 905 -> 904 (-0.11%)
helped: 3
HURT: 1
LOST: 6
GAINED: 23
Haswell
total instructions in shared programs:
13465303 ->
13441142 (-0.18%)
instructions in affected programs:
3726999 ->
3702838 (-0.65%)
helped: 22139
HURT: 347
helped stats (abs) min: 1 max: 43 x̄: 1.11 x̃: 1
helped stats (rel) min: 0.03% max: 10.00% x̄: 1.01% x̃: 0.75%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.35% max: 11.11% x̄: 1.48% x̃: 1.12%
95% mean confidence interval for instructions value: -1.08 -1.07
95% mean confidence interval for instructions %-change: -0.99% -0.96%
Instructions are helped.
total cycles in shared programs:
376271308 ->
376273090 (<.01%)
cycles in affected programs:
167496811 ->
167498593 (<.01%)
helped: 13206
HURT: 13281
helped stats (abs) min: 1 max: 3864 x̄: 35.39 x̃: 8
helped stats (rel) min: <.01% max: 53.10% x̄: 2.31% x̃: 0.80%
HURT stats (abs) min: 1 max: 3828 x̄: 35.32 x̃: 8
HURT stats (rel) min: <.01% max: 117.85% x̄: 2.88% x̃: 0.61%
95% mean confidence interval for cycles value: -1.33 1.47
95% mean confidence interval for cycles %-change: 0.22% 0.36%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 23158 -> 23134 (-0.10%)
spills in affected programs: 24 -> 0
helped: 3
HURT: 0
total fills in shared programs: 34580 -> 34550 (-0.09%)
fills in affected programs: 30 -> 0
helped: 3
HURT: 0
LOST: 23
GAINED: 13
Ivy Bridge
total instructions in shared programs:
12034154 ->
12014301 (-0.16%)
instructions in affected programs:
3636209 ->
3616356 (-0.55%)
helped: 18771
HURT: 459
helped stats (abs) min: 1 max: 43 x̄: 1.08 x̃: 1
helped stats (rel) min: 0.03% max: 10.00% x̄: 0.91% x̃: 0.68%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.34% max: 8.33% x̄: 1.43% x̃: 1.11%
95% mean confidence interval for instructions value: -1.04 -1.02
95% mean confidence interval for instructions %-change: -0.86% -0.84%
Instructions are helped.
total cycles in shared programs:
180186960 ->
180175147 (<.01%)
cycles in affected programs:
44652745 ->
44640932 (-0.03%)
helped: 12979
HURT: 11033
helped stats (abs) min: 1 max: 5836 x̄: 32.88 x̃: 6
helped stats (rel) min: <.01% max: 53.10% x̄: 2.19% x̃: 0.74%
HURT stats (abs) min: 1 max: 4811 x̄: 37.61 x̃: 9
HURT stats (rel) min: <.01% max: 115.18% x̄: 2.99% x̃: 0.69%
95% mean confidence interval for cycles value: -2.29 1.31
95% mean confidence interval for cycles %-change: 0.11% 0.26%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 3623 -> 3599 (-0.66%)
spills in affected programs: 24 -> 0
helped: 3
HURT: 0
total fills in shared programs: 4061 -> 4031 (-0.74%)
fills in affected programs: 30 -> 0
helped: 3
HURT: 0
LOST: 17
GAINED: 18
Sandy Bridge
total instructions in shared programs:
10853968 ->
10834932 (-0.18%)
instructions in affected programs:
3769957 ->
3750921 (-0.50%)
helped: 17944
HURT: 204
helped stats (abs) min: 1 max: 3 x̄: 1.07 x̃: 1
helped stats (rel) min: 0.02% max: 10.00% x̄: 0.83% x̃: 0.60%
HURT stats (abs) min: 1 max: 2 x̄: 1.01 x̃: 1
HURT stats (rel) min: 0.31% max: 9.09% x̄: 1.83% x̃: 0.93%
95% mean confidence interval for instructions value: -1.05 -1.04
95% mean confidence interval for instructions %-change: -0.81% -0.78%
Instructions are helped.
total cycles in shared programs:
153894864 ->
153885988 (<.01%)
cycles in affected programs:
50643925 ->
50635049 (-0.02%)
helped: 9361
HURT: 10534
helped stats (abs) min: 1 max: 1966 x̄: 19.42 x̃: 4
helped stats (rel) min: <.01% max: 34.97% x̄: 0.90% x̃: 0.22%
HURT stats (abs) min: 1 max: 1371 x̄: 16.42 x̃: 5
HURT stats (rel) min: <.01% max: 55.10% x̄: 0.81% x̃: 0.27%
95% mean confidence interval for cycles value: -1.27 0.38
95% mean confidence interval for cycles %-change: -0.03% 0.04%
Inconclusive result (value mean confidence interval includes 0).
LOST: 6
GAINED: 24
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Mon, 3 Jun 2019 22:22:15 +0000 (15:22 -0700)]
nir: intel/vec4: Add flag to disable some algebraic optimizations
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>
Ian Romanick [Tue, 11 Jun 2019 19:06:52 +0000 (12:06 -0700)]
intel/vec4: Try to emit immediate sources for MOV
Per the comment in vec4_visitor::nir_emit_load_const, further
improvement is possible in this area. That case would be more
complicated as I think we'd want to check that all users of the
nir_load_const_instr result intended to use the value as float.
No shader-db changes on any Gen8+ platform as these platforms do not use
the vec4 backend.
v2: Massive rebase on
eeebeb211f1 ("intel/vec4: Try emitting non-scalar
immediates"). This commit is about twice as helpful since
b04beaf41d2
("intel/vec4: Try both sources as candidates for being immediates").
Haswell and Ivy Bridge had similar results. (Haswell shown)
total instructions in shared programs:
13478598 ->
13474068 (-0.03%)
instructions in affected programs: 589452 -> 584922 (-0.77%)
helped: 2773
HURT: 0
helped stats (abs) min: 1 max: 7 x̄: 1.63 x̃: 1
helped stats (rel) min: 0.16% max: 5.66% x̄: 0.96% x̃: 0.83%
95% mean confidence interval for instructions value: -1.67 -1.60
95% mean confidence interval for instructions %-change: -0.98% -0.94%
Instructions are helped.
total cycles in shared programs:
376386916 ->
376369392 (<.01%)
cycles in affected programs:
16871628 ->
16854104 (-0.10%)
helped: 2293
HURT: 523
helped stats (abs) min: 2 max: 812 x̄: 13.80 x̃: 2
helped stats (rel) min: <.01% max: 10.18% x̄: 1.02% x̃: 0.36%
HURT stats (abs) min: 2 max: 316 x̄: 26.99 x̃: 14
HURT stats (rel) min: <.01% max: 19.34% x̄: 2.15% x̃: 1.43%
95% mean confidence interval for cycles value: -7.87 -4.58
95% mean confidence interval for cycles %-change: -0.52% -0.34%
Cycles are helped.
Sandy Bridge
total instructions in shared programs:
10860328 ->
10857675 (-0.02%)
instructions in affected programs: 335907 -> 333254 (-0.79%)
helped: 1639
HURT: 0
helped stats (abs) min: 1 max: 5 x̄: 1.62 x̃: 1
helped stats (rel) min: 0.10% max: 5.26% x̄: 0.86% x̃: 0.70%
95% mean confidence interval for instructions value: -1.67 -1.57
95% mean confidence interval for instructions %-change: -0.89% -0.84%
Instructions are helped.
total cycles in shared programs:
153942720 ->
153934120 (<.01%)
cycles in affected programs:
5604818 ->
5596218 (-0.15%)
helped: 1494
HURT: 97
helped stats (abs) min: 2 max: 256 x̄: 7.84 x̃: 2
helped stats (rel) min: 0.01% max: 6.62% x̄: 0.35% x̃: 0.18%
HURT stats (abs) min: 2 max: 160 x̄: 32.02 x̃: 20
HURT stats (rel) min: 0.02% max: 3.37% x̄: 0.88% x̃: 0.56%
95% mean confidence interval for cycles value: -6.45 -4.36
95% mean confidence interval for cycles %-change: -0.32% -0.23%
Cycles are helped.
Iron Lake and GM45 had similar results. (Iron Lake shown)
total instructions in shared programs:
8139378 ->
8137267 (-0.03%)
instructions in affected programs: 265616 -> 263505 (-0.79%)
helped: 1148
HURT: 0
helped stats (abs) min: 1 max: 5 x̄: 1.84 x̃: 1
helped stats (rel) min: 0.22% max: 4.76% x̄: 0.87% x̃: 0.62%
95% mean confidence interval for instructions value: -1.90 -1.78
95% mean confidence interval for instructions %-change: -0.90% -0.83%
Instructions are helped.
total cycles in shared programs:
188541756 ->
188537540 (<.01%)
cycles in affected programs:
9807004 ->
9802788 (-0.04%)
helped: 1143
HURT: 4
helped stats (abs) min: 2 max: 10 x̄: 3.70 x̃: 2
helped stats (rel) min: <.01% max: 3.01% x̄: 0.13% x̃: 0.06%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.18% max: 0.18% x̄: 0.18% x̃: 0.18%
95% mean confidence interval for cycles value: -3.80 -3.55
95% mean confidence interval for cycles %-change: -0.14% -0.12%
Cycles are helped.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Tue, 11 Jun 2019 18:08:49 +0000 (11:08 -0700)]
intel/vec4: Try to emit a VF source in try_immediate_source
This commit is also a pre-requisite for the next commit.
No shader-db changes on any Gen8+ platform as these platforms do not use
the vec4 backend.
v2: Massive rebase on
eeebeb211f1 ("intel/vec4: Try emitting non-scalar
immediates"). This change is a lot less helpful since that commit
landed (previously helped 1934 shaders on HSW) because, apparently, a
lot of the cases helped by that commit were things like vector loads of
{ 1.0, 1.0, 1.0 } that were also helped by this commit.
Haswell
total instructions in shared programs:
13480095 ->
13478598 (-0.01%)
instructions in affected programs: 229534 -> 228037 (-0.65%)
helped: 1006
HURT: 0
helped stats (abs) min: 1 max: 7 x̄: 1.49 x̃: 1
helped stats (rel) min: 0.04% max: 3.45% x̄: 1.11% x̃: 1.09%
95% mean confidence interval for instructions value: -1.54 -1.43
95% mean confidence interval for instructions %-change: -1.15% -1.07%
Instructions are helped.
total cycles in shared programs:
376385734 ->
376386916 (<.01%)
cycles in affected programs:
14101380 ->
14102562 (<.01%)
helped: 941
HURT: 56
helped stats (abs) min: 2 max: 322 x̄: 5.62 x̃: 2
helped stats (rel) min: <.01% max: 7.74% x̄: 0.51% x̃: 0.42%
HURT stats (abs) min: 2 max: 618 x̄: 115.50 x̃: 32
HURT stats (rel) min: 0.03% max: 4.62% x̄: 0.83% x̃: 0.44%
95% mean confidence interval for cycles value: -2.06 4.43
95% mean confidence interval for cycles %-change: -0.47% -0.39%
Inconclusive result (value mean confidence interval includes 0).
Ivy Bridge
total instructions in shared programs:
12048004 ->
12046589 (-0.01%)
instructions in affected programs: 217072 -> 215657 (-0.65%)
helped: 934
HURT: 0
helped stats (abs) min: 1 max: 7 x̄: 1.51 x̃: 1
helped stats (rel) min: 0.04% max: 3.45% x̄: 1.14% x̃: 1.11%
95% mean confidence interval for instructions value: -1.57 -1.46
95% mean confidence interval for instructions %-change: -1.18% -1.10%
Instructions are helped.
total cycles in shared programs:
180285854 ->
180287608 (<.01%)
cycles in affected programs:
14103824 ->
14105578 (0.01%)
helped: 871
HURT: 53
helped stats (abs) min: 2 max: 322 x̄: 5.51 x̃: 2
helped stats (rel) min: <.01% max: 7.67% x̄: 0.50% x̃: 0.42%
HURT stats (abs) min: 2 max: 618 x̄: 123.66 x̃: 32
HURT stats (rel) min: 0.03% max: 4.47% x̄: 0.92% x̃: 0.46%
95% mean confidence interval for cycles value: -1.60 5.39
95% mean confidence interval for cycles %-change: -0.46% -0.37%
Inconclusive result (value mean confidence interval includes 0).
Sandy Bridge
total instructions in shared programs:
10861227 ->
10860328 (<.01%)
instructions in affected programs: 92969 -> 92070 (-0.97%)
helped: 624
HURT: 0
helped stats (abs) min: 1 max: 7 x̄: 1.44 x̃: 1
helped stats (rel) min: 0.11% max: 3.45% x̄: 1.05% x̃: 0.95%
95% mean confidence interval for instructions value: -1.52 -1.36
95% mean confidence interval for instructions %-change: -1.09% -1.01%
Instructions are helped.
total cycles in shared programs:
153944316 ->
153942720 (<.01%)
cycles in affected programs:
1640956 ->
1639360 (-0.10%)
helped: 601
HURT: 15
helped stats (abs) min: 2 max: 120 x̄: 3.56 x̃: 2
helped stats (rel) min: 0.02% max: 6.33% x̄: 0.18% x̃: 0.08%
HURT stats (abs) min: 2 max: 72 x̄: 36.13 x̃: 36
HURT stats (rel) min: 0.05% max: 3.84% x̄: 1.95% x̃: 2.00%
95% mean confidence interval for cycles value: -3.44 -1.74
95% mean confidence interval for cycles %-change: -0.18% -0.09%
Cycles are helped.
Iron Lake and GM45 had similar results. (Iron Lake shown)
total instructions in shared programs:
8139924 ->
8139378 (<.01%)
instructions in affected programs: 69776 -> 69230 (-0.78%)
helped: 322
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 1.70 x̃: 1
helped stats (rel) min: 0.27% max: 3.23% x̄: 0.79% x̃: 0.54%
95% mean confidence interval for instructions value: -1.88 -1.51
95% mean confidence interval for instructions %-change: -0.85% -0.72%
Instructions are helped.
total cycles in shared programs:
188542864 ->
188541756 (<.01%)
cycles in affected programs:
3031532 ->
3030424 (-0.04%)
helped: 320
HURT: 0
helped stats (abs) min: 2 max: 20 x̄: 3.46 x̃: 2
helped stats (rel) min: <.01% max: 0.69% x̄: 0.06% x̃: 0.06%
95% mean confidence interval for cycles value: -3.85 -3.07
95% mean confidence interval for cycles %-change: -0.06% -0.05%
Cycles are helped.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Thu, 6 Jun 2019 18:21:15 +0000 (11:21 -0700)]
intel/vec4: Try to emit a single load for multiple 3-src instruction operands
If a 3-source instruction uses immediate values 1.0 and -1.0, just load
1.0 into a register. Use the negation source modifier to get -1.0.
This has trivial impact now, but it prevents a few thousand regressions
on vec4 platforms with "nir/algebraic: Recognize open-coded flrp(-1, 1,
a) and flrp(1, -1, a)"
All Gen6 and Gen7 platforms had similar results. (Haswell shown)
total instructions in shared programs:
13487412 ->
13487406 (<.01%)
instructions in affected programs: 541 -> 535 (-1.11%)
helped: 6
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.36% max: 2.08% x̄: 1.65% x̃: 1.80%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -2.33% -0.97%
Instructions are helped.
total cycles in shared programs:
376402564 ->
376402500 (<.01%)
cycles in affected programs: 10348 -> 10284 (-0.62%)
helped: 10
HURT: 1
helped stats (abs) min: 2 max: 26 x̄: 7.00 x̃: 2
helped stats (rel) min: 0.13% max: 2.05% x̄: 0.89% x̃: 0.79%
HURT stats (abs) min: 6 max: 6 x̄: 6.00 x̃: 6
HURT stats (rel) min: 0.29% max: 0.29% x̄: 0.29% x̃: 0.29%
95% mean confidence interval for cycles value: -11.72 0.08
95% mean confidence interval for cycles %-change: -1.20% -0.36%
Inconclusive result (value mean confidence interval includes 0).
No shader-db changes on any other Intel platform.
Reviewed-by: Matt Turner <mattst88@gmail.com>
Ian Romanick [Thu, 6 Jun 2019 18:12:14 +0000 (11:12 -0700)]
intel/vec4: Refactor operand fixing for ffma and flrp
Reviewed-by: Matt Turner <mattst88@gmail.com>
Alyssa Rosenzweig [Thu, 11 Jul 2019 14:02:26 +0000 (07:02 -0700)]
panfrost: Wire up GLES2-class polygon offset
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Alyssa Rosenzweig [Thu, 11 Jul 2019 14:01:56 +0000 (07:01 -0700)]
pan/decode: Depth units/factor are identical to GL
I'm not sure why I thoughtt here was an off-by-one, other than maybe bad
data collection.
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Christian Gmeiner [Fri, 5 Jul 2019 06:07:36 +0000 (08:07 +0200)]
etnaviv: remove dead translate_ts_sampler_format(..) declaration
Fixes: 66411521ea9 ("etnaviv: combine translate_ts_sampler_format/translate_msaa_format")
Signed-off-by: Christian Gmeiner <christian.gmeiner@gmail.com>
Reviewed-by: Jonathan Marek <jonathan@marek.ca>
Caio Marcelo de Oliveira Filho [Wed, 10 Jul 2019 19:02:23 +0000 (12:02 -0700)]
intel/fs: Add support for SLM fence in Gen11
Gen11 SLM is not on L3 anymore, so now the hardware has two separate
fences. Add a way to control which fence types to use.
At this time, we don't have enough information in NIR to control the
visibility of the memory being fenced, so for now be conservative and
assume that fences will need a stall. With more information later
we'll be able to reduce those.
Fixes Vulkan CTS tests in ICL:
dEQP-VK.memory_model.message_passing.core11.u32.coherent.fence_fence.atomicwrite.device.payload_nonlocal.workgroup.guard_local.buffer.comp
dEQP-VK.memory_model.message_passing.core11.u32.coherent.fence_fence.atomicwrite.device.payload_local.buffer.guard_nonlocal.workgroup.comp
dEQP-VK.memory_model.message_passing.core11.u32.coherent.fence_fence.atomicwrite.device.payload_local.image.guard_nonlocal.workgroup.comp
dEQP-VK.memory_model.message_passing.core11.u32.coherent.fence_fence.atomicwrite.workgroup.payload_local.buffer.guard_nonlocal.workgroup.comp
dEQP-VK.memory_model.message_passing.core11.u32.coherent.fence_fence.atomicwrite.workgroup.payload_local.image.guard_nonlocal.workgroup.comp
The whole set of supported tests in dEQP-VK.memory_model.* group
should be passing in ICL now.
v2: Pass BTI around instead of having an enum. (Jason)
Emit two SHADER_OPCODE_MEMORY_FENCE instead of one that gets
transformed into two. (Jason)
List tests fixed. (Lionel)
v3: For clarity, split the decision of which fences to emit from the
emission code. (Jason)
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Acked-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Tomeu Vizoso [Thu, 11 Jul 2019 14:34:01 +0000 (16:34 +0200)]
Revert "panfrost/midgard: Use _safe iterator"
This reverts commit
812ce2ce9e5655613eae740926176509897122fa.
We massively regress with the reverted patch. So in the meantime, take
it out.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Alyssa Rosenzweig [Wed, 10 Jul 2019 21:50:48 +0000 (14:50 -0700)]
panfrost: Don't lie about Z/S formats
Only Z24S8 is properly supported right now, so let's be careful. Fixes a
number of issues relating to improper Z/S handling. The most obvious is
depth buffers with incorrect strides, which manifests in truly bizarre
ways and can happen commonly with FBOs.
Fixes WebGL (Aquarium runs, etc).
Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Samuel Pitoiset [Thu, 11 Jul 2019 06:44:20 +0000 (08:44 +0200)]
radv/gfx10: enable geometry shaders
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Bas Nieuwenhuizen [Thu, 11 Jul 2019 06:44:19 +0000 (08:44 +0200)]
radv/gfx10: Fix NGG GS output mask handlings for LDS indexing.
In emit_vertex we optimize storage if the output mask does not
have all bits set. Do the same in the epilogue so the indices
actually match up.
Fixes dEQP-VK.geometry.input.basic_primitive.points because it
outputs PSIZE with an output mask of 1, which cause the generic
attribute for the color to be loaded from the wrong indices.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Bas Nieuwenhuizen [Thu, 11 Jul 2019 06:44:18 +0000 (08:44 +0200)]
radv/gfx10: Simplify output mask handling for NGG GS.
We only ever get in this function for a NGG GS proper.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Bas Nieuwenhuizen [Thu, 11 Jul 2019 06:44:17 +0000 (08:44 +0200)]
radv/gfx10: Do GS prologue outside of gs_threads if.
Mirror radeonsi.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Samuel Pitoiset [Thu, 11 Jul 2019 06:44:16 +0000 (08:44 +0200)]
radv/gfx10: implement support for GS as NGG
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Bas Nieuwenhuizen [Thu, 11 Jul 2019 06:44:15 +0000 (08:44 +0200)]
radv/gfx10: Use correct ES shader for es_vgpr_comp_cnt for GS.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Bas Nieuwenhuizen [Thu, 11 Jul 2019 06:44:14 +0000 (08:44 +0200)]
radv/gfx10: Do not allocate a gs_copy_shader on gfx10.
Will use ngg for any gs anyway.
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Samuel Pitoiset [Thu, 11 Jul 2019 06:44:13 +0000 (08:44 +0200)]
radv/gfx10: fix VGT_SHADER_STAGES_EN for GS as NGG
The driver shouldn't set the copy shader bit.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 06:44:12 +0000 (08:44 +0200)]
radv/gfx10: fix number of GS invocations for NGG
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Tomeu Vizoso [Thu, 11 Jul 2019 10:18:58 +0000 (12:18 +0200)]
panfrost/midgard: Use _safe iterator
Fixes this assertion:
../mesa/src/panfrost/midgard/midgard_schedule.c:507:schedule_block: Assertion `ins == __next && "use _safe iterator"' failed.
Trace/breakpoint trap
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Tomeu Vizoso [Thu, 11 Jul 2019 10:12:16 +0000 (12:12 +0200)]
panfrost: Place the height value in the height field
In the mali_single_framebuffer descriptor.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
Reviewed-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
v2: Remove unwanted chunks
Samuel Pitoiset [Thu, 11 Jul 2019 12:24:37 +0000 (14:24 +0200)]
radv/gfx10: fix maximum number of mip levels for 3D images
The dimensions also have to be adjusted if the number of supported
mip levels is changed.
This fixes dEQP-VK.api.info.image_format_properties.3d.*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Thu, 11 Jul 2019 09:54:24 +0000 (11:54 +0200)]
radv/gfx10: disable TC-compat HTILE for multisampled D32_SFLOAT format
For some reasons D32_SFLOAT is also affected on GFX10, it works
fine with previous generations.
This fixes some dEQP-VK.renderpass2.depth_stencil_resolve.*.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Kenneth Graunke [Sun, 7 Jul 2019 23:48:10 +0000 (16:48 -0700)]
iris: Fix key->input_vertices for 8_PATCH TCS mode.
We were failing to flag the program dirty when it changed. Also, we
were unnecessarily setting key->input_vertices for SINGLE_PATCH mode,
which would reduce program cache hits. Only set it if needed.
Kenneth Graunke [Sun, 7 Jul 2019 23:32:09 +0000 (16:32 -0700)]
iris: Only set key->flat_shade if COL0/COL1 are written.
This was just laziness on my part, we already added similar checks in
the VS key handling. Just need to do it here too. Should improve cache
hits.
Kenneth Graunke [Sun, 7 Jul 2019 23:58:14 +0000 (16:58 -0700)]
iris: Drop comment about var->data.binding not being set.
I refactored the sampler lowering passes a long time ago to ensure
that gl_nir_lower_samplers_as_deref is run and var->data.binding is set.
Kenneth Graunke [Sun, 7 Jul 2019 23:53:17 +0000 (16:53 -0700)]
iris: Drop comments about missing NOS
These stages don't need NOS. If they do, we can add it - the
infrastructure is there if we need it someday.
Kenneth Graunke [Sun, 7 Jul 2019 23:29:24 +0000 (16:29 -0700)]
iris: Drop a TODO comment
This is literally implemented two lines above.
Neil Roberts [Wed, 10 Jul 2019 11:04:01 +0000 (13:04 +0200)]
glsl/builtin types: Set the precision on the depth range params
The members of gl_DepthRangeParameters are declared to be highp in
GLSL ES specs.
Reviewed-by: Eric Anholt <eric@anholt.net>
Neil Roberts [Wed, 10 Jul 2019 11:01:38 +0000 (13:01 +0200)]
glsl: Add a constructor for glsl_struct_field to specify the precision
Adds a third constructor to glsl_struct_field which has an extra
parameter to specify the precision.
Reviewed-by: Eric Anholt <eric@anholt.net>
Neil Roberts [Wed, 10 Jul 2019 10:56:22 +0000 (12:56 +0200)]
glsl: Add a macro for the default values for glsl_struct_field
There are two constructors for glsl_struct_field with different
parameters. Instead of repeating them for both constructors, this
patch adds a convenience macro. This will make it easier to add a
third constructor in a later patch.
Reviewed-by: Eric Anholt <eric@anholt.net>
Neil Roberts [Fri, 5 Jul 2019 18:54:32 +0000 (20:54 +0200)]
glsl/builtin_variables: Add a precision to the builtins
All of the builtin variables mentioned in the GLSL ES spec and the
extensions include a precision declaration which is different
depending on what the variable is used for. This patch makes it set
the corresponding precision when creating the variable. This will make
a difference once we start using the precision information for
optimisation. Previously all of the builtin variables ended up with a
precision of NONE.
v2: Made gl_PointSize and gl_FragCoord highp since GLSL ES 3.00. Fixed
gl_MaxViewPorts to always be highp. (Eric Anholt)
Reviewed-by: Eric Anholt <eric@anholt.net>
Kenneth Graunke [Tue, 9 Jul 2019 07:32:42 +0000 (00:32 -0700)]
compiler: Save a single copy of the softfp64 shader in the context.
We were recompiling the softfp64 library of functions from GLSL to NIR
every time we compiled a shader that used fp64. Worse, we were ralloc
stealing it to the GL context. This meant that we'd accumulate lots of
copies for the lifetime of the context, which was a big space leak.
Instead, we can simply stash a single copy in the GL context, and use
it for subsequent compiles. Having a single copy should be fine from
a memory context point of view: nir_inline_function_impl already clones
the necessary nir_function_impl's as it inlines.
KHR-GL45.enhanced_layouts.ssb_member_align_non_power_of_2 was previously
OOM'ing a system with 16GB of RAM when using softfp64. Now it finishes
much more quickly and uses only ~200MB of RAM.
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
Timothy Arceri [Wed, 10 Jul 2019 04:11:23 +0000 (14:11 +1000)]
radv: fix memory leak when restoring from cache
Fixes: 726a31df705b ("radv: Add the concept of radv shader binaries.")
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Kristian H. Kristensen [Tue, 11 Jun 2019 18:27:36 +0000 (11:27 -0700)]
freedreno: Generate headers from xml files
Reviewed-by: Eric Engestrom <eric@engestrom.ch>
Acked-by: Rob Clark <robdclark@gmail.com>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:58 +0000 (15:18 +0200)]
radv: switch to the new VS exports path
It will help for GS as NGG on GFX10.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:57 +0000 (15:18 +0200)]
radv: set the slot_index correctly for VARYING_SLOT_CLIP_DIST1
For selecting a different SQ_EXP_POS target.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:56 +0000 (15:18 +0200)]
radv: add a new function for exporting VS outputs
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:55 +0000 (15:18 +0200)]
radv: implement new path for exporting generic varyings
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:54 +0000 (15:18 +0200)]
radv: use the generic export path for clip/cull distances
When they are exported to the next stage.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Samuel Pitoiset [Wed, 10 Jul 2019 13:18:53 +0000 (15:18 +0200)]
radv: remove an extra memcpy when exporting clip/cull distances
Cleanup.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Jason Ekstrand [Thu, 21 Feb 2019 23:20:39 +0000 (17:20 -0600)]
intel/compiler: Add a "base class" for program keys
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>
Jason Ekstrand [Sat, 23 Feb 2019 17:53:43 +0000 (11:53 -0600)]
i965/program_cache: Cast the key to char * before adding key_size
We're about to change the type of key to be brw_base_prog_key and that
will mean blindly adding the key size without a cast will lead to the
wrong calculation. It's safer to cast to char * first anyway.
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Jason Ekstrand [Sun, 23 Jun 2019 14:26:59 +0000 (09:26 -0500)]
anv: Make the workaround BO a whole page
I'm not 100% sure how this ever worked because gem_create usually shoots
you if the BO size isn't page-aligned.
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Jason Ekstrand [Sat, 22 Jun 2019 15:57:39 +0000 (10:57 -0500)]
anv: Set Stateless Data Port Access MOCS
This is the MOCS setting used for the A64 stateless messages which we
sometimes use for SSBO operations.
Fixes: 48ed2a7bb009 "anv: Implement VK_EXT_buffer_device_address"
Fixes: 79fb0d27f3ab "anv: Implement SSBOs bindings with GPU addr..."
Reviewed-by: Chad Versace <chadversary@chromium.org>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>