Timothy Arceri
dfe2f19855
st/nir: fix atomic lowering for gallium drivers
...
i965 and gallium handle the atomic buffer index differently. It was
just by luck that the single piglit test for this was passing.
For gallium we use the atomic binding so that we match the handling
in st_bind_atomics().
On radeonsi this fixes the CTS test:
KHR-GL43.shader_storage_buffer_object.advanced-write-fragment
It also fixes tressfx hair rendering in Tomb Raider.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2018-03-20 14:29:53 +11:00
Timothy Arceri
ffa4bbe466
st/nir/radeonsi: move nir_lower_uniforms_to_ubo() to the state tracker
...
This will only ever be used by gallium drivers so it probably doesn't
belong in the nir toolkit. Also we want to pass it some non NIR
things in the following patch.
To avoid regressions we wrap the lowering calls that have been moved
to st_glsl_to_nir with a quick hack so that they are only called for
radeonsi, we will replace the hack with a check for uniform packing
in a following patch.
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2018-03-20 14:17:34 +11:00
Ian Romanick
6aeaa7d363
nir: Don't compare b2f or b2i with zero
...
All of the shaders that had loops changed were in Tomb Raider. The one
shader that lost SIMD16 is one of those.
Skylake
total instructions in shared programs: 14391653 -> 14390468 (<.01%)
instructions in affected programs: 111891 -> 110706 (-1.06%)
helped: 501
HURT: 0
helped stats (abs) min: 1 max: 155 x̄: 2.37 x̃: 1
helped stats (rel) min: 0.05% max: 21.54% x̄: 1.61% x̃: 1.01%
95% mean confidence interval for instructions value: -3.23 -1.50
95% mean confidence interval for instructions %-change: -1.77% -1.45%
Instructions are helped.
total cycles in shared programs: 532793024 -> 532776598 (<.01%)
cycles in affected programs: 987682 -> 971256 (-1.66%)
helped: 348
nnHURT: 41
helped stats (abs) min: 1 max: 3074 x̄: 54.91 x̃: 18
helped stats (rel) min: 0.05% max: 32.24% x̄: 3.36% x̃: 1.68%
HURT stats (abs) min: 1 max: 422 x̄: 65.39 x̃: 24
HURT stats (rel) min: 0.09% max: 39.29% x̄: 9.50% x̃: 2.02%
95% mean confidence interval for cycles value: -64.08 -20.38
95% mean confidence interval for cycles %-change: -2.78% -1.23%
Cycles are helped.
total loops in shared programs: 4854 -> 4829 (-0.52%)
loops in affected programs: 27 -> 2 (-92.59%)
helped: 18
HURT: 0
LOST: 1
GAINED: 0
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
2018-03-19 13:52:35 -07:00
Samuel Pitoiset
af355aaa07
nir: add nir_opt_move_load_ubo() optimization pass
...
This pass moves load UBO operations just before their first use,
loosely based on nir_opt_move_comparisons.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
2018-03-16 09:50:31 +01:00
Karol Herbst
b617bfcccf
compiler: int8/uint8 support
...
OpenCL kernels also have int8/uint8.
v2: remove changes in nir_search as Jason posted a patch for that
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Signed-off-by: Karol Herbst <kherbst@redhat.com>
2018-03-14 10:08:42 -04:00
Rob Clark
4e4428482e
nir: lower_load_const_to_scalar fix for 8/16b types
...
Signed-off-by: Rob Clark <robdclark@gmail.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2018-03-13 20:17:04 -04:00
Jason Ekstrand
3d1d7e8561
nir/subgroups: Add lowering for vote_ieq/vote_feq to a ballot
...
This is based heavily on 97f10934ed
2018-03-13 13:25:15 -07:00
Ian Romanick
6878c9aabc
nir: Don't i2b a value that is already Boolean
...
A bunch of shaders have sequences like:
i2b(u2i(floatBitsToUint(intBitsToFloat(x == y ? -1 : 0))))
Other optimizations (and NIR's typeless nature) reduce this to
i2b(x == y)
which is silly.
Skylake
total instructions in shared programs: 14498698 -> 14497948 (<.01%)
instructions in affected programs: 74480 -> 73730 (-1.01%)
helped: 277
HURT: 0
helped stats (abs) min: 1 max: 32 x̄: 2.71 x̃: 2
helped stats (rel) min: 0.04% max: 13.79% x̄: 1.45% x̃: 0.68%
95% mean confidence interval for instructions value: -3.35 -2.06
95% mean confidence interval for instructions %-change: -1.74% -1.16%
Instructions are helped.
total cycles in shared programs: 532015500 -> 531999238 (<.01%)
cycles in affected programs: 5943878 -> 5927616 (-0.27%)
helped: 251
HURT: 74
helped stats (abs) min: 1 max: 13149 x̄: 127.89 x̃: 14
helped stats (rel) min: 0.01% max: 17.31% x̄: 1.55% x̃: 0.53%
HURT stats (abs) min: 1 max: 4550 x̄: 214.04 x̃: 15
HURT stats (rel) min: <.01% max: 44.43% x̄: 2.81% x̃: 0.33%
95% mean confidence interval for cycles value: -158.51 58.43
95% mean confidence interval for cycles %-change: -1.07% -0.04%
Inconclusive result (value mean confidence interval includes 0).
total loops in shared programs: 4753 -> 4735 (-0.38%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
Haswell and Broadwell had simliar results. (Broadwell shown)
total instructions in shared programs: 14791877 -> 14791127 (<.01%)
instructions in affected programs: 77326 -> 76576 (-0.97%)
helped: 278
HURT: 1
helped stats (abs) min: 1 max: 32 x̄: 2.70 x̃: 2
helped stats (rel) min: 0.04% max: 13.79% x̄: 1.42% x̃: 0.68%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.49% max: 0.49% x̄: 0.49% x̃: 0.49%
95% mean confidence interval for instructions value: -3.33 -2.05
95% mean confidence interval for instructions %-change: -1.70% -1.13%
Instructions are helped.
total cycles in shared programs: 558250067 -> 558252872 (<.01%)
cycles in affected programs: 5806328 -> 5809133 (0.05%)
helped: 235
HURT: 83
helped stats (abs) min: 1 max: 10630 x̄: 81.73 x̃: 16
helped stats (rel) min: 0.03% max: 18.58% x̄: 1.60% x̃: 0.51%
HURT stats (abs) min: 1 max: 10590 x̄: 265.19 x̃: 20
HURT stats (rel) min: <.01% max: 15.28% x̄: 1.89% x̃: 0.54%
95% mean confidence interval for cycles value: -89.87 107.51
95% mean confidence interval for cycles %-change: -1.06% -0.32%
Inconclusive result (value mean confidence interval includes 0).
total loops in shared programs: 4735 -> 4717 (-0.38%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
total fills in shared programs: 83111 -> 83110 (<.01%)
fills in affected programs: 28 -> 27 (-3.57%)
helped: 1
HURT: 0
Ivy Bridge
total instructions in shared programs: 11774173 -> 11773436 (<.01%)
instructions in affected programs: 70819 -> 70082 (-1.04%)
helped: 267
HURT: 0
helped stats (abs) min: 1 max: 48 x̄: 2.76 x̃: 2
helped stats (rel) min: 0.21% max: 19.51% x̄: 1.57% x̃: 0.63%
95% mean confidence interval for instructions value: -3.51 -2.01
95% mean confidence interval for instructions %-change: -1.94% -1.21%
Instructions are helped.
total cycles in shared programs: 257153833 -> 257148932 (<.01%)
cycles in affected programs: 585341 -> 580440 (-0.84%)
helped: 167
HURT: 100
helped stats (abs) min: 1 max: 1327 x̄: 44.89 x̃: 16
helped stats (rel) min: 0.04% max: 26.54% x̄: 2.41% x̃: 0.88%
HURT stats (abs) min: 1 max: 200 x̄: 25.95 x̃: 16
HURT stats (rel) min: 0.04% max: 9.81% x̄: 1.34% x̃: 0.65%
95% mean confidence interval for cycles value: -33.25 -3.46
95% mean confidence interval for cycles %-change: -1.47% -0.54%
Cycles are helped.
total loops in shared programs: 3416 -> 3398 (-0.53%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
LOST: 2
GAINED: 0
Sandy Bridge
total instructions in shared programs: 10499306 -> 10499094 (<.01%)
instructions in affected programs: 6051 -> 5839 (-3.50%)
helped: 43
HURT: 0
helped stats (abs) min: 1 max: 32 x̄: 4.93 x̃: 2
helped stats (rel) min: 0.39% max: 12.90% x̄: 4.29% x̃: 2.45%
95% mean confidence interval for instructions value: -7.66 -2.20
95% mean confidence interval for instructions %-change: -5.47% -3.12%
Instructions are helped.
total cycles in shared programs: 145862568 -> 145861370 (<.01%)
cycles in affected programs: 61733 -> 60535 (-1.94%)
helped: 36
HURT: 2
helped stats (abs) min: 16 max: 66 x̄: 36.61 x̃: 35
helped stats (rel) min: 0.45% max: 17.31% x̄: 4.92% x̃: 2.81%
HURT stats (abs) min: 18 max: 102 x̄: 60.00 x̃: 60
HURT stats (rel) min: 1.10% max: 1.85% x̄: 1.48% x̃: 1.48%
95% mean confidence interval for cycles value: -41.28 -21.77
95% mean confidence interval for cycles %-change: -6.16% -3.00%
Cycles are helped.
total loops in shared programs: 1803 -> 1785 (-1.00%)
loops in affected programs: 18 -> 0
helped: 18
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 100.00% max: 100.00% x̄: 100.00% x̃: 100.00%
95% mean confidence interval for loops value: -1.00 -1.00
95% mean confidence interval for loops %-change: -100.00% -100.00%
Loops are helped.
LOST: 4
GAINED: 0
No changes on Iron Lake of GM45.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-08 15:26:26 -08:00
Ian Romanick
54e8d2268d
nir: Narrow some dot product operations
...
On vector platforms, this helps elide some constant loads.
v2: Reorder the transformations.
No changes on Broadwell or Skylake.
Haswell
total instructions in shared programs: 13093793 -> 13060163 (-0.26%)
instructions in affected programs: 1277532 -> 1243902 (-2.63%)
helped: 13216
HURT: 95
helped stats (abs) min: 1 max: 18 x̄: 2.56 x̃: 2
helped stats (rel) min: 0.21% max: 20.00% x̄: 3.63% x̃: 2.78%
HURT stats (abs) min: 1 max: 6 x̄: 1.77 x̃: 1
HURT stats (rel) min: 0.09% max: 5.56% x̄: 1.25% x̃: 1.19%
95% mean confidence interval for instructions value: -2.57 -2.49
95% mean confidence interval for instructions %-change: -3.65% -3.54%
Instructions are helped.
total cycles in shared programs: 409580819 -> 409268463 (-0.08%)
cycles in affected programs: 71730652 -> 71418296 (-0.44%)
helped: 9898
HURT: 2352
helped stats (abs) min: 2 max: 16014 x̄: 37.08 x̃: 16
helped stats (rel) min: <.01% max: 35.55% x̄: 6.26% x̃: 4.50%
HURT stats (abs) min: 2 max: 276 x̄: 23.25 x̃: 6
HURT stats (rel) min: <.01% max: 40.00% x̄: 3.54% x̃: 1.97%
95% mean confidence interval for cycles value: -33.19 -17.80
95% mean confidence interval for cycles %-change: -4.50% -4.26%
Cycles are helped.
total fills in shared programs: 82059 -> 82052 (<.01%)
fills in affected programs: 21 -> 14 (-33.33%)
helped: 7
HURT: 0
Sandy Bridge and Ivy Bridge had similar results (Ivy Bridge shown)
total instructions in shared programs: 11811851 -> 11780605 (-0.26%)
instructions in affected programs: 1155007 -> 1123761 (-2.71%)
helped: 12304
HURT: 95
helped stats (abs) min: 1 max: 18 x̄: 2.55 x̃: 2
helped stats (rel) min: 0.21% max: 20.00% x̄: 3.69% x̃: 2.86%
HURT stats (abs) min: 1 max: 6 x̄: 1.77 x̃: 1
HURT stats (rel) min: 0.09% max: 5.56% x̄: 1.25% x̃: 1.19%
95% mean confidence interval for instructions value: -2.56 -2.48
95% mean confidence interval for instructions %-change: -3.71% -3.59%
Instructions are helped.
total cycles in shared programs: 257618409 -> 257316805 (-0.12%)
cycles in affected programs: 71999580 -> 71697976 (-0.42%)
helped: 9155
HURT: 2380
helped stats (abs) min: 2 max: 16014 x̄: 38.44 x̃: 16
helped stats (rel) min: <.01% max: 35.75% x̄: 6.39% x̃: 4.62%
HURT stats (abs) min: 2 max: 290 x̄: 21.14 x̃: 4
HURT stats (rel) min: <.01% max: 41.55% x̄: 3.14% x̃: 1.33%
95% mean confidence interval for cycles value: -34.32 -17.97
95% mean confidence interval for cycles %-change: -4.55% -4.29%
Cycles are helped.
GM45 and Iron Lake had nearly identical results (Iron Lake shown)
total instructions in shared programs: 7886750 -> 7879944 (-0.09%)
instructions in affected programs: 373781 -> 366975 (-1.82%)
helped: 3715
HURT: 47
helped stats (abs) min: 1 max: 8 x̄: 1.86 x̃: 1
helped stats (rel) min: 0.22% max: 16.67% x̄: 2.88% x̃: 2.06%
HURT stats (abs) min: 1 max: 6 x̄: 2.55 x̃: 2
HURT stats (rel) min: 1.09% max: 5.00% x̄: 1.93% x̃: 2.35%
95% mean confidence interval for instructions value: -1.85 -1.77
95% mean confidence interval for instructions %-change: -2.91% -2.73%
Instructions are helped.
total cycles in shared programs: 178114636 -> 178095452 (-0.01%)
cycles in affected programs: 7227666 -> 7208482 (-0.27%)
helped: 3349
HURT: 301
helped stats (abs) min: 2 max: 90 x̄: 6.55 x̃: 4
helped stats (rel) min: <.01% max: 14.18% x̄: 0.95% x̃: 0.63%
HURT stats (abs) min: 2 max: 42 x̄: 9.13 x̃: 10
HURT stats (rel) min: 0.01% max: 11.19% x̄: 1.22% x̃: 1.50%
95% mean confidence interval for cycles value: -5.52 -4.99
95% mean confidence interval for cycles %-change: -0.81% -0.73%
Cycles are helped.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> [v1]
2018-03-08 15:26:26 -08:00
Daniel Schürmann
68a6a3b51a
spirv: handle AMD_gcn_shader extended instructions
...
Co-authored-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Daniel Schürmann <daniel.schuermann@campus.tu-berlin.de>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-03-07 23:09:58 +01:00
Daniel Schürmann
a1a2a8dfda
nir: add AMD_gcn_shader extended instructions
...
Signed-off-by: Daniel Schürmann <daniel.schuermann@campus.tu-berlin.de>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-03-07 23:09:58 +01:00
Jason Ekstrand
789221dcfa
nir: Add a helper for getting binop identities
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
82d493a939
nir: Add subgroup arithmetic reduction intrinsics
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
493a165544
nir: Add quad operations and lowering
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
149b92ccf2
nir: Add subgroup shuffle intrinsics and lowering
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
0e893356fe
nir/lower_subgroups: Add scalarizing for vote_eq
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
44681e4795
nir: Generalize nir_intrinsic_vote_eq
...
The SPIR-V extension wants us to be able to do an AllEqual on any vector
or scalar type. This has two implications:
1) We need to be able to handle vectors so we switch the vote_eq
intrinsics to be vectorized intrinsics.
2) We need to handle floats which have different behavior with respect
to +-0, NaN, etc. than the integer variant so we need two variants.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
adc077797a
spirv: Add initial subgroup support
...
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
5162a1d884
nir: Add new SPIR-V ballot intrinsics and lowering
...
Someone can make the lowering optional later if they want something
different for their hardware.
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
752e969703
compiler: Add two new system values for subgroups
...
This will be required for SPIR-V subgroup support
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
34c60ea02b
nir: Add new SPIR-V ballot ALU intrinsics and lowering
...
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
2018-03-07 12:13:47 -08:00
Jason Ekstrand
ff9db1a4cc
nir/spirv: Add support for device groups
...
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-07 12:13:47 -08:00
Timothy Arceri
1fdb21541e
Revert "nir: bump loop unroll limit to 96."
...
This reverts commit 2d36efdb7f
2018-03-07 15:10:05 +11:00
Ian Romanick
e3ea166a2c
nir: Simplify some comparisons like a+b < a
...
All Gen7+ platforms had similar results. (Skylake shown)
total instructions in shared programs: 14514555 -> 14514547 (<.01%)
instructions in affected programs: 1972 -> 1964 (-0.41%)
helped: 8
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.39% max: 0.42% x̄: 0.41% x̃: 0.41%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -0.41% -0.40%
Instructions are helped.
total cycles in shared programs: 533141444 -> 533136780 (<.01%)
cycles in affected programs: 164728 -> 160064 (-2.83%)
helped: 181
HURT: 3
helped stats (abs) min: 2 max: 94 x̄: 26.17 x̃: 30
helped stats (rel) min: 0.12% max: 5.33% x̄: 3.42% x̃: 3.80%
HURT stats (abs) min: 4 max: 54 x̄: 24.00 x̃: 14
HURT stats (rel) min: 0.20% max: 2.39% x̄: 1.09% x̃: 0.68%
95% mean confidence interval for cycles value: -27.12 -23.58
95% mean confidence interval for cycles %-change: -3.54% -3.16%
Cycles are helped.
Sandy Bridge
total instructions in shared programs: 10533667 -> 10533539 (<.01%)
instructions in affected programs: 10148 -> 10020 (-1.26%)
helped: 124
HURT: 0
helped stats (abs) min: 1 max: 2 x̄: 1.03 x̃: 1
helped stats (rel) min: 0.39% max: 4.35% x̄: 2.20% x̃: 2.04%
95% mean confidence interval for instructions value: -1.06 -1.00
95% mean confidence interval for instructions %-change: -2.46% -1.95%
Instructions are helped.
total cycles in shared programs: 146136887 -> 146132122 (<.01%)
cycles in affected programs: 206382 -> 201617 (-2.31%)
helped: 171
HURT: 0
helped stats (abs) min: 2 max: 40 x̄: 27.87 x̃: 30
helped stats (rel) min: 0.08% max: 5.73% x̄: 2.98% x̃: 2.67%
95% mean confidence interval for cycles value: -29.19 -26.54
95% mean confidence interval for cycles %-change: -3.20% -2.76%
Cycles are helped.
Iron Lake
total instructions in shared programs: 7886515 -> 7886507 (<.01%)
instructions in affected programs: 3016 -> 3008 (-0.27%)
helped: 8
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.25% max: 0.28% x̄: 0.27% x̃: 0.27%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -0.27% -0.26%
Instructions are helped.
total cycles in shared programs: 178100396 -> 178100388 (<.01%)
cycles in affected programs: 156128 -> 156120 (<.01%)
helped: 4
HURT: 4
helped stats (abs) min: 4 max: 4 x̄: 4.00 x̃: 4
helped stats (rel) min: 0.02% max: 0.04% x̄: 0.03% x̃: 0.03%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: <.01% max: 0.01% x̄: <.01% x̃: <.01%
95% mean confidence interval for cycles value: -3.68 1.68
95% mean confidence interval for cycles %-change: -0.03% <.01%
Inconclusive result (value mean confidence interval includes 0).
GM45
total instructions in shared programs: 4857872 -> 4857868 (<.01%)
instructions in affected programs: 1544 -> 1540 (-0.26%)
helped: 4
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.25% max: 0.27% x̄: 0.26% x̃: 0.26%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -0.28% -0.24%
Instructions are helped.
total cycles in shared programs: 122167654 -> 122167662 (<.01%)
cycles in affected programs: 96248 -> 96256 (<.01%)
helped: 0
HURT: 4
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: <.01% max: 0.01% x̄: <.01% x̃: <.01%
95% mean confidence interval for cycles value: 2.00 2.00
95% mean confidence interval for cycles %-change: <.01% 0.02%
Cycles are HURT.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-06 11:17:30 -08:00
Ian Romanick
d1ed4ffe0b
nir: Use De Morgan's Law on logic compounded comparisons
...
The replacement of the comparison operators must happen during this
step. If it does not, the next pass of nir_opt_algebraic will reapply
De Morgan's Law in the "opposite direction" before performing dead code
elimination. The resulting infinite loop will eventually get OOM
killed.
Haswell, Broadwell, and Skylake had similar results. (Broadwell shown)
total instructions in shared programs: 14808185 -> 14808036 (<.01%)
instructions in affected programs: 13758 -> 13609 (-1.08%)
helped: 39
HURT: 0
helped stats (abs) min: 1 max: 10 x̄: 3.82 x̃: 3
helped stats (rel) min: 0.44% max: 1.55% x̄: 0.98% x̃: 1.01%
95% mean confidence interval for instructions value: -4.67 -2.97
95% mean confidence interval for instructions %-change: -1.09% -0.88%
Instructions are helped.
total cycles in shared programs: 559438333 -> 559435832 (<.01%)
cycles in affected programs: 199160 -> 196659 (-1.26%)
helped: 42
HURT: 3
helped stats (abs) min: 2 max: 184 x̄: 61.50 x̃: 51
helped stats (rel) min: 0.02% max: 6.94% x̄: 1.41% x̃: 1.40%
HURT stats (abs) min: 2 max: 40 x̄: 27.33 x̃: 40
HURT stats (rel) min: 0.05% max: 0.74% x̄: 0.51% x̃: 0.74%
95% mean confidence interval for cycles value: -71.47 -39.69
95% mean confidence interval for cycles %-change: -1.64% -0.93%
Cycles are helped.
Sandy Bridge and Ivy Bridge had similar results. (Ivy Bridge shown)
total instructions in shared programs: 11811776 -> 11811553 (<.01%)
instructions in affected programs: 15201 -> 14978 (-1.47%)
helped: 39
HURT: 0
helped stats (abs) min: 1 max: 20 x̄: 5.72 x̃: 6
helped stats (rel) min: 0.44% max: 2.53% x̄: 1.30% x̃: 1.26%
95% mean confidence interval for instructions value: -7.21 -4.23
95% mean confidence interval for instructions %-change: -1.48% -1.12%
Instructions are helped.
total cycles in shared programs: 257617270 -> 257614589 (<.01%)
cycles in affected programs: 212107 -> 209426 (-1.26%)
helped: 45
HURT: 0
helped stats (abs) min: 2 max: 180 x̄: 59.58 x̃: 54
helped stats (rel) min: 0.02% max: 6.02% x̄: 1.30% x̃: 1.32%
95% mean confidence interval for cycles value: -74.02 -45.14
95% mean confidence interval for cycles %-change: -1.59% -1.01%
Cycles are helped.
Iron Lake
total instructions in shared programs: 7886648 -> 7886515 (<.01%)
instructions in affected programs: 14106 -> 13973 (-0.94%)
helped: 29
HURT: 0
helped stats (abs) min: 1 max: 10 x̄: 4.59 x̃: 4
helped stats (rel) min: 0.35% max: 1.83% x̄: 0.90% x̃: 0.81%
95% mean confidence interval for instructions value: -5.65 -3.52
95% mean confidence interval for instructions %-change: -1.03% -0.76%
Instructions are helped.
total cycles in shared programs: 178100812 -> 178100396 (<.01%)
cycles in affected programs: 67970 -> 67554 (-0.61%)
helped: 29
HURT: 0
helped stats (abs) min: 2 max: 40 x̄: 14.34 x̃: 12
helped stats (rel) min: 0.15% max: 1.69% x̄: 0.58% x̃: 0.54%
95% mean confidence interval for cycles value: -18.30 -10.39
95% mean confidence interval for cycles %-change: -0.71% -0.45%
Cycles are helped.
GM45
total instructions in shared programs: 4857939 -> 4857872 (<.01%)
instructions in affected programs: 7426 -> 7359 (-0.90%)
helped: 15
HURT: 0
helped stats (abs) min: 1 max: 10 x̄: 4.47 x̃: 4
helped stats (rel) min: 0.33% max: 1.80% x̄: 0.87% x̃: 0.77%
95% mean confidence interval for instructions value: -6.06 -2.87
95% mean confidence interval for instructions %-change: -1.06% -0.67%
Instructions are helped.
total cycles in shared programs: 122167930 -> 122167654 (<.01%)
cycles in affected programs: 43118 -> 42842 (-0.64%)
helped: 15
HURT: 0
helped stats (abs) min: 4 max: 40 x̄: 18.40 x̃: 16
helped stats (rel) min: 0.15% max: 1.69% x̄: 0.62% x̃: 0.54%
95% mean confidence interval for cycles value: -25.03 -11.77
95% mean confidence interval for cycles %-change: -0.82% -0.41%
Cycles are helped.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-06 11:17:29 -08:00
Ian Romanick
52607658ff
nir: Replace fmin(b2f(a), b) with a bcsel
...
All of the affected shaders are HDR mappers from Serious Sam 3.
All Gen7+ platforms had similar results. (Skylake shown)
total instructions in shared programs: 14516285 -> 14516273 (<.01%)
instructions in affected programs: 348 -> 336 (-3.45%)
helped: 12
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 2.08% max: 6.67% x̄: 4.31% x̃: 4.17%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -5.55% -3.06%
Instructions are helped.
total cycles in shared programs: 533163876 -> 533163808 (<.01%)
cycles in affected programs: 1144 -> 1076 (-5.94%)
helped: 4
HURT: 0
helped stats (abs) min: 16 max: 18 x̄: 17.00 x̃: 17
helped stats (rel) min: 5.80% max: 6.08% x̄: 5.94% x̃: 5.94%
95% mean confidence interval for cycles value: -18.84 -15.16
95% mean confidence interval for cycles %-change: -6.20% -5.68%
Cycles are helped.
Sandy Bridge
total instructions in shared programs: 10533321 -> 10533309 (<.01%)
instructions in affected programs: 372 -> 360 (-3.23%)
helped: 12
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 2.00% max: 5.88% x̄: 3.91% x̃: 3.85%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -4.96% -2.86%
Instructions are helped.
total cycles in shared programs: 146136632 -> 146136428 (<.01%)
cycles in affected programs: 11668 -> 11464 (-1.75%)
helped: 12
HURT: 0
helped stats (abs) min: 16 max: 18 x̄: 17.00 x̃: 17
helped stats (rel) min: 0.99% max: 3.44% x̄: 2.20% x̃: 2.29%
95% mean confidence interval for cycles value: -17.66 -16.34
95% mean confidence interval for cycles %-change: -2.82% -1.58%
Cycles are helped.
Iron Lake
total instructions in shared programs: 7886301 -> 7886277 (<.01%)
instructions in affected programs: 576 -> 552 (-4.17%)
helped: 12
HURT: 0
helped stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
helped stats (rel) min: 2.94% max: 6.06% x̄: 4.51% x̃: 4.65%
95% mean confidence interval for instructions value: -2.00 -2.00
95% mean confidence interval for instructions %-change: -5.30% -3.72%
Instructions are helped.
total cycles in shared programs: 178113176 -> 178113176 (0.00%)
cycles in affected programs: 2116 -> 2116 (0.00%)
helped: 2
HURT: 4
helped stats (abs) min: 4 max: 4 x̄: 4.00 x̃: 4
helped stats (rel) min: 1.14% max: 1.14% x̄: 1.14% x̃: 1.14%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.50% max: 0.65% x̄: 0.58% x̃: 0.58%
95% mean confidence interval for cycles value: -3.25 3.25
95% mean confidence interval for cycles %-change: -0.93% 0.94%
Inconclusive result (value mean confidence interval includes 0).
GM45
total instructions in shared programs: 4857756 -> 4857744 (<.01%)
instructions in affected programs: 294 -> 282 (-4.08%)
helped: 6
HURT: 0
helped stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
helped stats (rel) min: 2.94% max: 5.71% x̄: 4.40% x̃: 4.55%
95% mean confidence interval for instructions value: -2.00 -2.00
95% mean confidence interval for instructions %-change: -5.71% -3.09%
Instructions are helped.
total cycles in shared programs: 122178730 -> 122178722 (<.01%)
cycles in affected programs: 700 -> 692 (-1.14%)
helped: 2
HURT: 0
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-06 11:17:29 -08:00
Ian Romanick
b974dfee11
nir: Pull b2f out of bcsel
...
All platforms had similar results. (Skylake shown)
total instructions in shared programs: 14516592 -> 14516586 (<.01%)
instructions in affected programs: 500 -> 494 (-1.20%)
helped: 2
HURT: 0
total cycles in shared programs: 533167044 -> 533166998 (<.01%)
cycles in affected programs: 6988 -> 6942 (-0.66%)
helped: 2
HURT: 0
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-06 11:17:29 -08:00
Ian Romanick
f50400cc80
nir: Replace an odd comparison involving fmin of -b2f
...
I noticed the fge version while looking at a shader for an unrelated
reason. The feq version prevents a regression in a later change that
performs strength reduction of some compares.
Broadwell and Skylake had similar results. (Skylake shown)
total instructions in shared programs: 14514808 -> 14514796 (<.01%)
instructions in affected programs: 750 -> 738 (-1.60%)
helped: 4
HURT: 0
helped stats (abs) min: 1 max: 5 x̄: 3.00 x̃: 3
helped stats (rel) min: 0.83% max: 1.96% x̄: 1.40% x̃: 1.40%
95% mean confidence interval for instructions value: -6.67 0.67
95% mean confidence interval for instructions %-change: -2.43% -0.36%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 533144939 -> 533144853 (<.01%)
cycles in affected programs: 8911 -> 8825 (-0.97%)
helped: 4
HURT: 0
helped stats (abs) min: 16 max: 32 x̄: 21.50 x̃: 19
helped stats (rel) min: 0.60% max: 1.89% x̄: 1.28% x̃: 1.31%
95% mean confidence interval for cycles value: -32.94 -10.06
95% mean confidence interval for cycles %-change: -2.30% -0.26%
Cycles are helped.
Haswell
total instructions in shared programs: 13093785 -> 13093775 (<.01%)
instructions in affected programs: 924 -> 914 (-1.08%)
helped: 4
HURT: 2
helped stats (abs) min: 1 max: 5 x̄: 3.00 x̃: 3
helped stats (rel) min: 0.82% max: 1.95% x̄: 1.39% x̃: 1.39%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 1.19% max: 1.19% x̄: 1.19% x̃: 1.19%
95% mean confidence interval for instructions value: -4.53 1.20
95% mean confidence interval for instructions %-change: -2.02% 0.97%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 409580553 -> 409580118 (<.01%)
cycles in affected programs: 10909 -> 10474 (-3.99%)
helped: 5
HURT: 1
helped stats (abs) min: 6 max: 222 x̄: 89.60 x̃: 18
helped stats (rel) min: 0.16% max: 24.72% x̄: 9.54% x̃: 1.78%
HURT stats (abs) min: 13 max: 13 x̄: 13.00 x̃: 13
HURT stats (rel) min: 0.39% max: 0.39% x̄: 0.39% x̃: 0.39%
95% mean confidence interval for cycles value: -180.68 35.68
95% mean confidence interval for cycles %-change: -19.55% 3.79%
Inconclusive result (value mean confidence interval includes 0).
Ivy Bridge
total instructions in shared programs: 11811851 -> 11811840 (<.01%)
instructions in affected programs: 1032 -> 1021 (-1.07%)
helped: 5
HURT: 1
helped stats (abs) min: 1 max: 5 x̄: 2.40 x̃: 1
helped stats (rel) min: 0.63% max: 1.95% x̄: 1.13% x̃: 0.97%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 1.19% max: 1.19% x̄: 1.19% x̃: 1.19%
95% mean confidence interval for instructions value: -4.17 0.51
95% mean confidence interval for instructions %-change: -1.86% 0.36%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 257618403 -> 257618168 (<.01%)
cycles in affected programs: 10784 -> 10549 (-2.18%)
helped: 4
HURT: 2
helped stats (abs) min: 4 max: 220 x̄: 64.50 x̃: 17
helped stats (rel) min: 0.50% max: 24.34% x̄: 7.07% x̃: 1.72%
HURT stats (abs) min: 9 max: 14 x̄: 11.50 x̃: 11
HURT stats (rel) min: 0.24% max: 0.42% x̄: 0.33% x̃: 0.33%
95% mean confidence interval for cycles value: -133.11 54.78
95% mean confidence interval for cycles %-change: -14.79% 5.59%
Inconclusive result (value mean confidence interval includes 0).
GM45, Iron Lake, and Sandy Bridge had similar results. (Sandy Bridge shown)
total instructions in shared programs: 10533871 -> 10533859 (<.01%)
instructions in affected programs: 865 -> 853 (-1.39%)
helped: 4
HURT: 0
helped stats (abs) min: 1 max: 5 x̄: 3.00 x̃: 3
helped stats (rel) min: 0.63% max: 1.83% x̄: 1.22% x̃: 1.21%
95% mean confidence interval for instructions value: -6.67 0.67
95% mean confidence interval for instructions %-change: -2.16% -0.29%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 146139904 -> 146139852 (<.01%)
cycles in affected programs: 15213 -> 15161 (-0.34%)
helped: 4
HURT: 0
helped stats (abs) min: 3 max: 18 x̄: 13.00 x̃: 15
helped stats (rel) min: 0.15% max: 0.84% x̄: 0.39% x̃: 0.29%
95% mean confidence interval for cycles value: -23.79 -2.21
95% mean confidence interval for cycles %-change: -0.88% 0.09%
Inconclusive result (%-change mean confidence interval includes 0).
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-06 11:17:29 -08:00
Ian Romanick
380136e998
nir: Mark bcsel-to-fmin (or fmax) transformations as inexact
...
These transformations are inexact because section 4.7.1 (Range and
Precision) says:
Operations and built-in functions that operate on a NaN are not
required to return a NaN as the result.
The fmin or fmax might not return NaN in cases where the original
expression would be required to return NaN.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2018-03-06 11:17:14 -08:00
Ian Romanick
4addd34b04
nir: Recognize some more open-coded fmin / fmax
...
This transformation is inexact because section 4.7.1 (Range and
Precision) says:
Operations and built-in functions that operate on a NaN are not
required to return a NaN as the result.
The fmin or fmax might not return NaN in cases where the original
expression would be required to return NaN.
v2: Reorder operands and mark as inexact. The latter suggested by
Jason.
shader-db results:
Haswell, Broadwell, and Skylake had similar results. (Skylake shown)
total instructions in shared programs: 14514817 -> 14514808 (<.01%)
instructions in affected programs: 229 -> 220 (-3.93%)
helped: 3
HURT: 0
helped stats (abs) min: 1 max: 4 x̄: 3.00 x̃: 4
helped stats (rel) min: 2.86% max: 4.12% x̄: 3.70% x̃: 4.12%
total cycles in shared programs: 533145211 -> 533144939 (<.01%)
cycles in affected programs: 37268 -> 36996 (-0.73%)
helped: 8
HURT: 0
helped stats (abs) min: 2 max: 134 x̄: 34.00 x̃: 2
helped stats (rel) min: 0.02% max: 14.22% x̄: 3.53% x̃: 0.05%
Sandy Bridge and Ivy Bridge had similar results. (Ivy Bridge shown)
total cycles in shared programs: 257618409 -> 257618403 (<.01%)
cycles in affected programs: 12582 -> 12576 (-0.05%)
helped: 3
HURT: 0
helped stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
helped stats (rel) min: 0.05% max: 0.05% x̄: 0.05% x̃: 0.05%
No changes on Iron Lake or GM45.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2018-03-06 11:17:14 -08:00
Ian Romanick
3a944316c4
nir: Silence unused parameter warnings in generated nir_constant_expressions code
...
Reduces my build from 2075 warnings to 2023 warnings by silencing 52
instances of things like
src/compiler/nir/nir_constant_expressions.c: In function ‘evaluate_bfi’:
src/compiler/nir/nir_constant_expressions.c:1812:61: warning: unused parameter ‘bit_size’ [-Wunused-parameter]
evaluate_bfi(MAYBE_UNUSED unsigned num_components, unsigned bit_size,
^~~~~~~~
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
2018-03-02 16:10:44 -08:00
Jose Maria Casanova Crespo
4420d8866c
nir/search: Include 8 and 16-bit support in construct_value
...
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
2018-03-01 09:16:03 -08:00
Jason Ekstrand
99ee40fb54
nir/search: Support 8 and 16-bit constants in match_value
...
Reviewed-by: Jose Maria Casanova Crespo <jmcasanova@igalia.com>
2018-03-01 09:15:01 -08:00
Alejandro Piñeiro
e72fb4e611
nir/serialize: handle var->name being NULL
...
var->name could be NULL under ARB_gl_spirv for example. And in any
case, the code is already handing var name being NULL when reading a
variable, so it is consistent to do it writing a variable too.
Reviewed-by: Timothy Arceri <tarceri@itsqueeze.com>
2018-03-01 08:23:33 +01:00
Timothy Arceri
0c1f37cc2d
nir: fix interger divide by zero crash during constant folding
...
From the GLSL 4.60 spec Section 5.9 (Expressions):
"Dividing by zero does not cause an exception but does result in
an unspecified value."
Fixes: 89285e4d47https://bugs.freedesktop.org/show_bug.cgi?id=105271
2018-02-28 15:55:39 +11:00
Timothy Arceri
a050ea60ee
nir: add lower_ldexp to nir compiler options
...
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
2018-02-28 09:23:49 +11:00
Samuel Pitoiset
63fb30c674
nir: lower fexp2(fmul(flog2(a), 2)) to fmul(a, a)
...
Similar for the 4 case.
Suggested by Bas.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-02-22 20:40:45 +01:00
Samuel Pitoiset
b18997876f
nir: add is_used_once for fmul(fexp2(a), fexp2(b)) to fexp2(fadd(a, b))
...
Otherwise the code size increases because the original fexp2()
instructions can't be deleted.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-02-22 20:40:43 +01:00
Timothy Arceri
cdeac00267
nir: remove old assert
...
This was originally intended to make sure the remap location
was not -1. However the code has changed alot since then,
the location is now never set to -1 and we also handle
components meaning this old assert has been doing comparisions
with the pointer to the array of component data.
Reviewed-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=105183
2018-02-22 09:31:00 +11:00
Marek Olšák
6b1e26e181
mesa: move STATE_LENGTH to shader_enums.h and use it everywhere
...
Reviewed-by: Brian Paul <brianp@vmware.com>
2018-02-13 01:00:45 +01:00
Marek Olšák
e149a0253c
mesa,glsl,nir: reduce gl_state_index size to 2 bytes
...
Let's use the new gl_state_index16 type everywhere and remove
the typecasts.
This helps reduce the size of gl_program_parameter.
Reviewed-by: Brian Paul <brianp@vmware.com>
2018-02-13 01:00:45 +01:00
Samuel Pitoiset
3488a3f033
radv: run nir_opt_shrink_load
...
LLVM can't shrink loads.
Polaris10:
Totals from affected shaders:
SGPRS: 62528 -> 59955 (-4.11 %)
VGPRS: 44708 -> 44616 (-0.21 %)
Spilled SGPRs: 16 -> 8 (-50.00 %)
Code Size: 1355504 -> 1355172 (-0.02 %) bytes
Max Waves: 11710 -> 11670 (-0.34 %)
Vega10:
Totals from affected shaders:
SGPRS: 51448 -> 50371 (-2.09 %)
VGPRS: 39140 -> 39048 (-0.24 %)
Spilled SGPRs: 16 -> 16 (0.00 %)
Code Size: 1307188 -> 1304296 (-0.22 %) bytes
Max Waves: 11312 -> 11292 (-0.18 %)
This reduces SGPRs spilling in MadMax, and it also reduces
number of SGPRs in DOW3 and F12017. The number of waves slightly
decreases in F1 but I don't see any performance changes after
benchmarking it. Talos and Serious Sam are not affected because
they don't use any push constants.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-02-06 23:08:44 +01:00
Samuel Pitoiset
e68562b94b
nir: add nir_opt_shrink_load pass
...
This is a very simple pass that just shrinks load_push_constant
intrinsics when some components are unused. For now, it can just
shrink vec4 to vec3, vec3 to vec2 and so on.
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Reviewed-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
2018-02-06 23:08:39 +01:00
Ian Romanick
ee63933a73
nir: Distribute binary operations with constants into bcsel
...
This was specifically designed to simplify 1+mix(0, a-1, condition) to
mix(1, a, condition) by pushing the 1+ inside.
Skylake, Broadwell, and Haswell had similar results. Skylake shown.
total instructions in shared programs: 14521753 -> 14521716 (<.01%)
instructions in affected programs: 10619 -> 10582 (-0.35%)
helped: 51
HURT: 14
helped stats (abs) min: 1 max: 12 x̄: 1.43 x̃: 1
helped stats (rel) min: 0.20% max: 3.58% x̄: 1.01% x̃: 0.95%
HURT stats (abs) min: 1 max: 11 x̄: 2.57 x̃: 1
HURT stats (rel) min: 0.22% max: 1.75% x̄: 1.20% x̃: 1.32%
95% mean confidence interval for instructions value: -1.31 0.17
95% mean confidence interval for instructions %-change: -0.80% -0.27%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 533000205 -> 533003533 (<.01%)
cycles in affected programs: 110610 -> 113938 (3.01%)
helped: 43
HURT: 28
helped stats (abs) min: 6 max: 440 x̄: 27.12 x̃: 16
helped stats (rel) min: 0.39% max: 4.84% x̄: 1.60% x̃: 1.67%
HURT stats (abs) min: 2 max: 3066 x̄: 160.50 x̃: 14
HURT stats (rel) min: 0.08% max: 77.78% x̄: 5.16% x̃: 0.62%
95% mean confidence interval for cycles value: -43.81 137.56
95% mean confidence interval for cycles %-change: -1.47% 3.60%
Inconclusive result (value mean confidence interval includes 0).
Ivy Bridge
total instructions in shared programs: 10018840 -> 10018713 (<.01%)
instructions in affected programs: 9431 -> 9304 (-1.35%)
helped: 51
HURT: 3
helped stats (abs) min: 1 max: 80 x̄: 2.76 x̃: 1
helped stats (rel) min: 0.20% max: 16.43% x̄: 1.16% x̃: 0.81%
HURT stats (abs) min: 1 max: 12 x̄: 4.67 x̃: 1
HURT stats (rel) min: 0.22% max: 1.33% x̄: 0.59% x̃: 0.22%
95% mean confidence interval for instructions value: -5.36 0.66
95% mean confidence interval for instructions %-change: -1.66% -0.46%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 87571944 -> 87572785 (<.01%)
cycles in affected programs: 117234 -> 118075 (0.72%)
helped: 42
HURT: 23
helped stats (abs) min: 2 max: 114 x̄: 51.90 x̃: 30
helped stats (rel) min: 0.11% max: 11.01% x̄: 4.45% x̃: 2.74%
HURT stats (abs) min: 1 max: 2341 x̄: 131.35 x̃: 10
HURT stats (rel) min: 0.06% max: 37.11% x̄: 2.75% x̃: 0.61%
95% mean confidence interval for cycles value: -61.05 86.93
95% mean confidence interval for cycles %-change: -3.47% -0.33%
Inconclusive result (value mean confidence interval includes 0).
Sandy Bridge
total instructions in shared programs: 10542933 -> 10542844 (<.01%)
instructions in affected programs: 11487 -> 11398 (-0.77%)
helped: 52
HURT: 3
helped stats (abs) min: 1 max: 40 x̄: 1.96 x̃: 1
helped stats (rel) min: 0.08% max: 8.16% x̄: 0.90% x̃: 0.72%
HURT stats (abs) min: 1 max: 11 x̄: 4.33 x̃: 1
HURT stats (rel) min: 0.22% max: 1.22% x̄: 0.55% x̃: 0.22%
95% mean confidence interval for instructions value: -3.17 -0.07
95% mean confidence interval for instructions %-change: -1.13% -0.52%
Instructions are helped.
total cycles in shared programs: 146098397 -> 146097094 (<.01%)
cycles in affected programs: 128140 -> 126837 (-1.02%)
helped: 47
HURT: 8
helped stats (abs) min: 2 max: 333 x̄: 29.21 x̃: 18
helped stats (rel) min: 0.13% max: 5.04% x̄: 1.18% x̃: 0.95%
HURT stats (abs) min: 1 max: 16 x̄: 8.75 x̃: 9
HURT stats (rel) min: 0.08% max: 0.43% x̄: 0.30% x̃: 0.34%
95% mean confidence interval for cycles value: -37.49 -9.90
95% mean confidence interval for cycles %-change: -1.22% -0.71%
Cycles are helped.
Iron Lake
total instructions in shared programs: 7886711 -> 7886509 (<.01%)
instructions in affected programs: 10425 -> 10223 (-1.94%)
helped: 50
HURT: 2
helped stats (abs) min: 1 max: 78 x̄: 4.08 x̃: 1
helped stats (rel) min: 0.34% max: 15.38% x̄: 1.12% x̃: 0.54%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.86% max: 0.91% x̄: 0.89% x̃: 0.89%
95% mean confidence interval for instructions value: -8.05 0.28
95% mean confidence interval for instructions %-change: -1.83% -0.26%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 178115324 -> 178114612 (<.01%)
cycles in affected programs: 765726 -> 765014 (-0.09%)
helped: 39
HURT: 1
helped stats (abs) min: 2 max: 276 x̄: 18.31 x̃: 8
helped stats (rel) min: <.01% max: 8.47% x̄: 0.39% x̃: 0.04%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.03% max: 0.03% x̄: 0.03% x̃: 0.03%
95% mean confidence interval for cycles value: -32.07 -3.53
95% mean confidence interval for cycles %-change: -0.86% 0.10%
Inconclusive result (%-change mean confidence interval includes 0).
GM45
total instructions in shared programs: 4857762 -> 4857661 (<.01%)
instructions in affected programs: 5523 -> 5422 (-1.83%)
helped: 25
HURT: 1
helped stats (abs) min: 1 max: 78 x̄: 4.08 x̃: 1
helped stats (rel) min: 0.34% max: 13.61% x̄: 1.04% x̃: 0.52%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.86% max: 0.86% x̄: 0.86% x̃: 0.86%
95% mean confidence interval for instructions value: -9.99 2.22
95% mean confidence interval for instructions %-change: -2.01% 0.08%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 122179674 -> 122179194 (<.01%)
cycles in affected programs: 530162 -> 529682 (-0.09%)
helped: 22
HURT: 1
helped stats (abs) min: 2 max: 292 x̄: 21.91 x̃: 7
helped stats (rel) min: <.01% max: 8.65% x̄: 0.44% x̃: 0.04%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.03% max: 0.03% x̄: 0.03% x̃: 0.03%
95% mean confidence interval for cycles value: -46.56 4.82
95% mean confidence interval for cycles %-change: -1.20% 0.36%
Inconclusive result (value mean confidence interval includes 0).
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:15 -08:00
Ian Romanick
03fb13f646
nir: Rearrange logic op-compounded integer compares
...
Skylake and Broadwell had similar results. Skylake shown.
total instructions in shared programs: 14521769 -> 14521753 (<.01%)
instructions in affected programs: 8782 -> 8766 (-0.18%)
helped: 16
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.12% max: 0.40% x̄: 0.20% x̃: 0.18%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -0.23% -0.16%
Instructions are helped.
total cycles in shared programs: 533000376 -> 533000205 (<.01%)
cycles in affected programs: 447035 -> 446864 (-0.04%)
helped: 9
HURT: 9
helped stats (abs) min: 2 max: 40 x̄: 35.78 x̃: 40
helped stats (rel) min: 0.02% max: 0.18% x̄: 0.10% x̃: 0.09%
HURT stats (abs) min: 1 max: 52 x̄: 16.78 x̃: 10
HURT stats (rel) min: <.01% max: 1.11% x̄: 0.29% x̃: 0.12%
95% mean confidence interval for cycles value: -25.07 6.07
95% mean confidence interval for cycles %-change: -0.08% 0.27%
Inconclusive result (value mean confidence interval includes 0).
No changes on GM45, Iron Lake, Sandy Bridge, Ivy Bridge, or Haswell.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
Ian Romanick
053be9f020
nir: Rearrange and-compounded float compares
...
If both comparisons are used as sources for instructions other than the
iand, this transformation is detrimental. If the non-identical value in
both compares is constant, the fmin or fmax will be constant-folded
away, so the transformation is always a win.
It is interesting to me that on Iron Lake only 81 shaders have
instruction counts changed, but 726 shaders have cycle counts changed.
shader-db results:
Skylake
total instructions in shared programs: 14525728 -> 14521017 (-0.03%)
instructions in affected programs: 1164726 -> 1160015 (-0.40%)
helped: 1692
HURT: 5
helped stats (abs) min: 1 max: 637 x̄: 2.79 x̃: 2
helped stats (rel) min: 0.07% max: 16.36% x̄: 0.81% x̃: 0.33%
HURT stats (abs) min: 1 max: 12 x̄: 3.20 x̃: 1
HURT stats (rel) min: 0.38% max: 2.86% x̄: 2.36% x̃: 2.86%
95% mean confidence interval for instructions value: -3.52 -2.03
95% mean confidence interval for instructions %-change: -0.86% -0.74%
Instructions are helped.
total cycles in shared programs: 533115449 -> 532991404 (-0.02%)
cycles in affected programs: 119401803 -> 119277758 (-0.10%)
helped: 1145
HURT: 467
helped stats (abs) min: 1 max: 34644 x̄: 145.92 x̃: 18
helped stats (rel) min: <.01% max: 45.33% x̄: 1.58% x̃: 0.42%
HURT stats (abs) min: 1 max: 1590 x̄: 92.15 x̃: 15
HURT stats (rel) min: <.01% max: 13.48% x̄: 1.26% x̃: 0.39%
95% mean confidence interval for cycles value: -122.16 -31.74
95% mean confidence interval for cycles %-change: -0.94% -0.57%
Cycles are helped.
total spills in shared programs: 9597 -> 9534 (-0.66%)
spills in affected programs: 403 -> 340 (-15.63%)
helped: 1
HURT: 1
total fills in shared programs: 13904 -> 13790 (-0.82%)
fills in affected programs: 1627 -> 1513 (-7.01%)
helped: 2
HURT: 1
LOST: 0
GAINED: 2
Broadwell
total instructions in shared programs: 14816966 -> 14812590 (-0.03%)
instructions in affected programs: 1499885 -> 1495509 (-0.29%)
helped: 1672
HURT: 15
helped stats (abs) min: 1 max: 455 x̄: 2.70 x̃: 2
helped stats (rel) min: 0.05% max: 16.36% x̄: 0.81% x̃: 0.33%
HURT stats (abs) min: 1 max: 21 x̄: 9.20 x̃: 8
HURT stats (rel) min: 0.08% max: 2.86% x̄: 1.06% x̃: 0.53%
95% mean confidence interval for instructions value: -3.14 -2.05
95% mean confidence interval for instructions %-change: -0.85% -0.73%
Instructions are helped.
total cycles in shared programs: 559353622 -> 559345595 (<.01%)
cycles in affected programs: 139893703 -> 139885676 (<.01%)
helped: 921
HURT: 697
helped stats (abs) min: 1 max: 42424 x̄: 143.45 x̃: 18
helped stats (rel) min: <.01% max: 36.23% x̄: 2.02% x̃: 0.87%
HURT stats (abs) min: 1 max: 2370 x̄: 178.03 x̃: 38
HURT stats (rel) min: <.01% max: 17.35% x̄: 0.71% x̃: 0.14%
95% mean confidence interval for cycles value: -59.64 49.72
95% mean confidence interval for cycles %-change: -1.02% -0.66%
Inconclusive result (value mean confidence interval includes 0).
total spills in shared programs: 78902 -> 78861 (-0.05%)
spills in affected programs: 2418 -> 2377 (-1.70%)
helped: 1
HURT: 11
total fills in shared programs: 83782 -> 83678 (-0.12%)
fills in affected programs: 3515 -> 3411 (-2.96%)
helped: 2
HURT: 11
LOST: 0
GAINED: 5
Haswell and Ivy Bridge had similar results. Haswell shown.
total instructions in shared programs: 9033898 -> 9032010 (-0.02%)
instructions in affected programs: 308064 -> 306176 (-0.61%)
helped: 921
HURT: 4
helped stats (abs) min: 1 max: 20 x̄: 2.05 x̃: 1
helped stats (rel) min: 0.17% max: 17.54% x̄: 0.80% x̃: 0.35%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 3.23% max: 3.23% x̄: 3.23% x̃: 3.23%
95% mean confidence interval for instructions value: -2.21 -1.87
95% mean confidence interval for instructions %-change: -0.88% -0.68%
Instructions are helped.
total cycles in shared programs: 84628949 -> 84620520 (<.01%)
cycles in affected programs: 2164913 -> 2156484 (-0.39%)
helped: 518
HURT: 359
helped stats (abs) min: 1 max: 440 x̄: 41.52 x̃: 20
helped stats (rel) min: <.01% max: 17.17% x̄: 1.95% x̃: 1.01%
HURT stats (abs) min: 1 max: 586 x̄: 36.43 x̃: 8
HURT stats (rel) min: 0.04% max: 18.65% x̄: 1.47% x̃: 0.40%
95% mean confidence interval for cycles value: -15.17 -4.05
95% mean confidence interval for cycles %-change: -0.77% -0.32%
Cycles are helped.
LOST: 0
GAINED: 4
Sandy Bridge
total instructions in shared programs: 10544860 -> 10542933 (-0.02%)
instructions in affected programs: 360019 -> 358092 (-0.54%)
helped: 931
HURT: 4
helped stats (abs) min: 1 max: 20 x̄: 2.07 x̃: 1
helped stats (rel) min: 0.11% max: 15.52% x̄: 0.68% x̃: 0.30%
HURT stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel) min: 3.33% max: 3.33% x̄: 3.33% x̃: 3.33%
95% mean confidence interval for instructions value: -2.23 -1.89
95% mean confidence interval for instructions %-change: -0.76% -0.58%
Instructions are helped.
total cycles in shared programs: 146106820 -> 146098397 (<.01%)
cycles in affected programs: 3435047 -> 3426624 (-0.25%)
helped: 572
HURT: 329
helped stats (abs) min: 1 max: 1289 x̄: 32.52 x̃: 15
helped stats (rel) min: <.01% max: 26.29% x̄: 0.97% x̃: 0.33%
HURT stats (abs) min: 1 max: 1714 x̄: 30.93 x̃: 6
HURT stats (rel) min: 0.02% max: 41.31% x̄: 1.13% x̃: 0.19%
95% mean confidence interval for cycles value: -16.85 -1.85
95% mean confidence interval for cycles %-change: -0.39% -0.01%
Cycles are helped.
LOST: 1
GAINED: 0
Iron Lake
total instructions in shared programs: 7886925 -> 7886711 (<.01%)
instructions in affected programs: 25763 -> 25549 (-0.83%)
helped: 75
HURT: 6
helped stats (abs) min: 1 max: 13 x̄: 3.33 x̃: 1
helped stats (rel) min: 0.35% max: 17.57% x̄: 1.96% x̃: 0.53%
HURT stats (abs) min: 1 max: 16 x̄: 6.00 x̃: 1
HURT stats (rel) min: 2.86% max: 4.79% x̄: 3.49% x̃: 2.86%
95% mean confidence interval for instructions value: -3.69 -1.60
95% mean confidence interval for instructions %-change: -2.54% -0.57%
Instructions are helped.
total cycles in shared programs: 178116888 -> 178115324 (<.01%)
cycles in affected programs: 5858790 -> 5857226 (-0.03%)
helped: 484
HURT: 242
helped stats (abs) min: 2 max: 76 x̄: 5.27 x̃: 6
helped stats (rel) min: 0.01% max: 10.70% x̄: 0.18% x̃: 0.06%
HURT stats (abs) min: 2 max: 76 x̄: 4.07 x̃: 2
HURT stats (rel) min: 0.01% max: 3.99% x̄: 0.19% x̃: 0.03%
95% mean confidence interval for cycles value: -2.76 -1.55
95% mean confidence interval for cycles %-change: -0.12% 0.01%
Inconclusive result (%-change mean confidence interval includes 0).
GM45
total instructions in shared programs: 4857870 -> 4857762 (<.01%)
instructions in affected programs: 13994 -> 13886 (-0.77%)
helped: 39
HURT: 5
helped stats (abs) min: 1 max: 13 x̄: 3.28 x̃: 2
helped stats (rel) min: 0.33% max: 17.11% x̄: 1.86% x̃: 0.48%
HURT stats (abs) min: 1 max: 16 x̄: 4.00 x̃: 1
HURT stats (rel) min: 2.86% max: 4.71% x̄: 3.23% x̃: 2.86%
95% mean confidence interval for instructions value: -3.86 -1.05
95% mean confidence interval for instructions %-change: -2.61% 0.04%
Inconclusive result (%-change mean confidence interval includes 0).
total cycles in shared programs: 122180744 -> 122179674 (<.01%)
cycles in affected programs: 3686646 -> 3685576 (-0.03%)
helped: 273
HURT: 141
helped stats (abs) min: 2 max: 76 x̄: 5.81 x̃: 6
helped stats (rel) min: 0.01% max: 10.70% x̄: 0.18% x̃: 0.06%
HURT stats (abs) min: 2 max: 76 x̄: 3.66 x̃: 2
HURT stats (rel) min: 0.01% max: 3.99% x̄: 0.16% x̃: 0.02%
95% mean confidence interval for cycles value: -3.42 -1.75
95% mean confidence interval for cycles %-change: -0.15% 0.03%
Inconclusive result (%-change mean confidence interval includes 0).
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
Ian Romanick
821e7a4d32
nir: Separate a weird compare with zero to two compares with zero
...
min(a+b, c+d) >= 0 becomes (a+b >= 0 && c+d >= 0).
No shader-db changes, but it does prevent 6 to 12 instruction
regressions in the next patch on all measured Intel platforms.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
Ian Romanick
68420d8322
nir: Simplify min and max of b2f
...
v2: Rebase on almost 2 years. Require that one of the arguments to fmin
or fmax be used only once. This prevents some regressions.
shader-db results:
Skylake and Broadwell had similar results. Skylake shown.
total instructions in shared programs: 14526021 -> 14525913 (<.01%)
instructions in affected programs: 4613 -> 4505 (-2.34%)
helped: 31
HURT: 0
helped stats (abs) min: 1 max: 4 x̄: 3.48 x̃: 4
helped stats (rel) min: 0.62% max: 6.67% x̄: 3.31% x̃: 2.42%
total cycles in shared programs: 533118710 -> 533118403 (<.01%)
cycles in affected programs: 34334 -> 34027 (-0.89%)
helped: 24
HURT: 0
helped stats (abs) min: 4 max: 24 x̄: 12.79 x̃: 14
helped stats (rel) min: 0.25% max: 2.40% x̄: 1.08% x̃: 1.03%
No changes on GM45, Iron Lake, Sandy Bridge, Ivy Bridge, or Haswell.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
Ian Romanick
d8d18516b0
nir: Undo possible damage caused by rearranging or-compounded float compares
...
shader-db results:
Skylake and Broadwell had similar results (Skylake shown)
total instructions in shared programs: 14525898 -> 14525836 (<.01%)
instructions in affected programs: 1964 -> 1902 (-3.16%)
helped: 14
HURT: 0
helped stats (abs) min: 1 max: 25 x̄: 4.43 x̃: 1
helped stats (rel) min: 0.68% max: 9.77% x̄: 2.10% x̃: 0.86%
95% mean confidence interval for instructions value: -9.46 0.60
95% mean confidence interval for instructions %-change: -3.97% -0.24%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 533119892 -> 533115756 (<.01%)
cycles in affected programs: 96061 -> 91925 (-4.31%)
helped: 13
HURT: 1
helped stats (abs) min: 60 max: 596 x̄: 318.77 x̃: 300
helped stats (rel) min: 1.15% max: 5.49% x̄: 4.27% x̃: 4.42%
HURT stats (abs) min: 8 max: 8 x̄: 8.00 x̃: 8
HURT stats (rel) min: 0.46% max: 0.46% x̄: 0.46% x̃: 0.46%
95% mean confidence interval for cycles value: -379.43 -211.43
95% mean confidence interval for cycles %-change: -4.84% -3.01%
Cycles are helped.
Haswell, Ivy Bridge and Sandy Bridge had similar results (Haswell shown).
total instructions in shared programs: 9033948 -> 9033898 (<.01%)
instructions in affected programs: 535 -> 485 (-9.35%)
helped: 2
HURT: 0
total cycles in shared programs: 84631402 -> 84628949 (<.01%)
cycles in affected programs: 63197 -> 60744 (-3.88%)
helped: 13
HURT: 2
helped stats (abs) min: 1 max: 594 x̄: 189.62 x̃: 140
helped stats (rel) min: 0.07% max: 5.04% x̄: 3.79% x̃: 4.01%
HURT stats (abs) min: 4 max: 8 x̄: 6.00 x̃: 6
HURT stats (rel) min: 0.17% max: 0.45% x̄: 0.31% x̃: 0.31%
95% mean confidence interval for cycles value: -253.40 -73.67
95% mean confidence interval for cycles %-change: -4.24% -2.25%
Cycles are helped.
No changes on GM45 or Iron Lake.
v2: Add a couple more tautological compares. Suggested by Elie.
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
Ian Romanick
3941cba0f7
nir: Be more conservative about rearranging or-compounded compares
...
If both comparisons are used as sources for instructions other than the
ior, this transformation is detrimental. If the non-identical value in
both compares is constant, the fmin or fmax will be constant-folded
away, so the transformation is always a win.
shader-db results:
Skylake
total instructions in shared programs: 14526147 -> 14525898 (<.01%)
instructions in affected programs: 70239 -> 69990 (-0.35%)
helped: 102
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 2.44 x̃: 1
helped stats (rel) min: 0.07% max: 2.30% x̄: 0.38% x̃: 0.20%
95% mean confidence interval for instructions value: -2.86 -2.02
95% mean confidence interval for instructions %-change: -0.46% -0.31%
Instructions are helped.
total cycles in shared programs: 533120531 -> 533119892 (<.01%)
cycles in affected programs: 994875 -> 994236 (-0.06%)
helped: 76
HURT: 26
helped stats (abs) min: 1 max: 324 x̄: 27.09 x̃: 13
helped stats (rel) min: <.01% max: 4.21% x̄: 0.45% x̃: 0.18%
HURT stats (abs) min: 1 max: 167 x̄: 54.62 x̃: 26
HURT stats (rel) min: <.01% max: 4.36% x̄: 1.01% x̃: 0.39%
95% mean confidence interval for cycles value: -19.44 6.91
95% mean confidence interval for cycles %-change: -0.30% 0.15%
Inconclusive result (value mean confidence interval includes 0).
Broadwell
total instructions in shared programs: 14816005 -> 14815787 (<.01%)
instructions in affected programs: 64658 -> 64440 (-0.34%)
helped: 97
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 2.25 x̃: 1
helped stats (rel) min: 0.07% max: 2.30% x̄: 0.38% x̃: 0.20%
95% mean confidence interval for instructions value: -2.62 -1.87
95% mean confidence interval for instructions %-change: -0.45% -0.30%
Instructions are helped.
total cycles in shared programs: 559340386 -> 559339907 (<.01%)
cycles in affected programs: 1090491 -> 1090012 (-0.04%)
helped: 66
HURT: 28
helped stats (abs) min: 2 max: 198 x̄: 23.83 x̃: 16
helped stats (rel) min: 0.01% max: 4.21% x̄: 0.47% x̃: 0.27%
HURT stats (abs) min: 2 max: 226 x̄: 39.07 x̃: 11
HURT stats (rel) min: <.01% max: 4.61% x̄: 0.64% x̃: 0.20%
95% mean confidence interval for cycles value: -15.94 5.75
95% mean confidence interval for cycles %-change: -0.35% 0.07%
Inconclusive result (value mean confidence interval includes 0).
LOST: 0
GAINED: 1
Haswell
total instructions in shared programs: 9034106 -> 9033948 (<.01%)
instructions in affected programs: 24096 -> 23938 (-0.66%)
helped: 38
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 4.16 x̃: 4
helped stats (rel) min: 0.42% max: 2.29% x̄: 0.71% x̃: 0.64%
95% mean confidence interval for instructions value: -4.71 -3.60
95% mean confidence interval for instructions %-change: -0.84% -0.58%
Instructions are helped.
total cycles in shared programs: 84631628 -> 84631402 (<.01%)
cycles in affected programs: 148674 -> 148448 (-0.15%)
helped: 14
HURT: 14
helped stats (abs) min: 1 max: 114 x̄: 22.14 x̃: 12
helped stats (rel) min: 0.02% max: 2.98% x̄: 0.66% x̃: 0.21%
HURT stats (abs) min: 1 max: 10 x̄: 6.00 x̃: 5
HURT stats (rel) min: 0.01% max: 0.20% x̄: 0.12% x̃: 0.11%
95% mean confidence interval for cycles value: -19.42 3.28
95% mean confidence interval for cycles %-change: -0.59% 0.05%
Inconclusive result (value mean confidence interval includes 0).
Ivy Bridge
total instructions in shared programs: 10015456 -> 10015293 (<.01%)
instructions in affected programs: 27701 -> 27538 (-0.59%)
helped: 38
HURT: 0
helped stats (abs) min: 1 max: 9 x̄: 4.29 x̃: 4
helped stats (rel) min: 0.33% max: 2.79% x̄: 0.66% x̃: 0.52%
95% mean confidence interval for instructions value: -4.87 -3.71
95% mean confidence interval for instructions %-change: -0.82% -0.51%
Instructions are helped.
total cycles in shared programs: 87524771 -> 87524569 (<.01%)
cycles in affected programs: 112324 -> 112122 (-0.18%)
helped: 6
HURT: 12
helped stats (abs) min: 2 max: 111 x̄: 44.67 x̃: 20
helped stats (rel) min: 0.02% max: 2.94% x̄: 1.45% x̃: 1.26%
HURT stats (abs) min: 1 max: 16 x̄: 5.50 x̃: 5
HURT stats (rel) min: <.01% max: 0.16% x̄: 0.08% x̃: 0.08%
95% mean confidence interval for cycles value: -29.14 6.69
95% mean confidence interval for cycles %-change: -0.93% 0.08%
Inconclusive result (value mean confidence interval includes 0).
LOST: 0
GAINED: 2
Sandy Bridge
total instructions in shared programs: 10545655 -> 10545465 (<.01%)
instructions in affected programs: 37198 -> 37008 (-0.51%)
helped: 42
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 4.52 x̃: 4
helped stats (rel) min: 0.31% max: 2.15% x̄: 0.58% x̃: 0.49%
95% mean confidence interval for instructions value: -5.14 -3.91
95% mean confidence interval for instructions %-change: -0.68% -0.47%
Instructions are helped.
total cycles in shared programs: 146113059 -> 146112427 (<.01%)
cycles in affected programs: 423514 -> 422882 (-0.15%)
helped: 32
HURT: 10
helped stats (abs) min: 4 max: 162 x̄: 24.34 x̃: 12
helped stats (rel) min: 0.06% max: 2.74% x̄: 0.37% x̃: 0.11%
HURT stats (abs) min: 12 max: 19 x̄: 14.70 x̃: 14
HURT stats (rel) min: 0.10% max: 0.18% x̄: 0.16% x̃: 0.14%
95% mean confidence interval for cycles value: -26.03 -4.07
95% mean confidence interval for cycles %-change: -0.43% -0.05%
Cycles are helped.
Iron Lake
total instructions in shared programs: 7886959 -> 7886925 (<.01%)
instructions in affected programs: 1340 -> 1306 (-2.54%)
helped: 4
HURT: 0
helped stats (abs) min: 2 max: 15 x̄: 8.50 x̃: 8
helped stats (rel) min: 0.63% max: 4.30% x̄: 2.45% x̃: 2.43%
95% mean confidence interval for instructions value: -20.44 3.44
95% mean confidence interval for instructions %-change: -5.78% 0.89%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 178116996 -> 178116888 (<.01%)
cycles in affected programs: 6262 -> 6154 (-1.72%)
helped: 2
HURT: 2
helped stats (abs) min: 44 max: 78 x̄: 61.00 x̃: 61
helped stats (rel) min: 3.31% max: 3.94% x̄: 3.62% x̃: 3.62%
HURT stats (abs) min: 6 max: 8 x̄: 7.00 x̃: 7
HURT stats (rel) min: 0.34% max: 0.68% x̄: 0.51% x̃: 0.51%
95% mean confidence interval for cycles value: -93.27 39.27
95% mean confidence interval for cycles %-change: -5.38% 2.27%
Inconclusive result (value mean confidence interval includes 0).
GM45
total instructions in shared programs: 4857887 -> 4857870 (<.01%)
instructions in affected programs: 674 -> 657 (-2.52%)
helped: 2
HURT: 0
total cycles in shared programs: 122180816 -> 122180744 (<.01%)
cycles in affected programs: 3764 -> 3692 (-1.91%)
helped: 1
HURT: 1
helped stats (abs) min: 78 max: 78 x̄: 78.00 x̃: 78
helped stats (rel) min: 3.94% max: 3.94% x̄: 3.94% x̃: 3.94%
HURT stats (abs) min: 6 max: 6 x̄: 6.00 x̃: 6
HURT stats (rel) min: 0.34% max: 0.34% x̄: 0.34% x̃: 0.34%
Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com>
Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
2018-01-30 15:40:14 -08:00
