fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-02-25 18:00:52 +01:00
Code Issues Projects Releases Packages Wiki Activity Actions 4
mesa/src/compiler
History
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
..
glsl nir: Generalize nir_intrinsic_vote_eq 2018-03-07 12:13:47 -08:00
nir nir: Don't i2b a value that is already Boolean 2018-03-08 15:26:26 -08:00
spirv spirv: handle AMD_gcn_shader extended instructions 2018-03-07 23:09:58 +01:00
.gitignore nir/spirv: Remove a duplicate spirv2nir from .gitignore 2016-10-04 07:43:15 -07:00
Android.glsl.gen.mk Android: clean-up trailing '\' in make variables 2017-03-22 17:52:06 +00:00
Android.glsl.mk android: glsl: build shader cache sources 2017-02-20 16:30:37 +00:00
Android.mk Android: glsl: add rules to generate ir_expression*.h header files 2016-09-06 15:58:55 +01:00
Android.nir.gen.mk Android: fix missing generation of vtn_gather_types.c 2017-12-13 16:20:15 -06:00
Android.nir.mk android: fix libmesa_nir build 2017-07-21 08:47:56 +03:00
blob.c blob: Don't set overrun if reading 0 bytes at end of data 2017-10-31 23:36:54 -07:00
blob.h blob: Use intptr_t instead of ssize_t 2017-10-13 15:02:34 -07:00
builtin_type_macros.h glsl: Add 16-bit types 2017-12-06 08:57:18 +01:00
glsl_types.cpp glsl: Fix memory leak with known glsl_type instances 2018-03-07 14:33:34 +02:00
glsl_types.h glsl: Fix memory leak with known glsl_type instances 2018-03-07 14:33:34 +02:00
Makefile.am automake: small cleanup after the meson.build inclusion 2018-01-25 17:06:29 +00:00
Makefile.glsl.am glsl: automake: export abs_builddir for the tests 2017-03-28 15:31:22 +01:00
Makefile.nir.am spirv: Makefile.nir.am: include vtn_gather_types_c.py script in tarball dist 2017-12-20 17:44:35 +01:00
Makefile.sources spirv: fix autotools builds 2018-03-08 10:45:56 +11:00
meson.build meson: Add build option for tools 2018-02-08 11:24:42 -08:00
nir_types.cpp nir: Add a helper to get the uvec4 type. 2018-01-03 14:25:23 -08:00
nir_types.h nir: add image and sampler type to glsl_get_bit_size() 2018-01-23 09:44:37 +11:00
SConscript glsl: Generate ir_expression_operation.h from Python 2016-08-30 16:28:00 -07:00
SConscript.glsl mesa: Remove prog_hash_table.c 2016-09-12 10:48:35 +10:00
SConscript.nir glsl: Generate ir_expression_operation.h from Python 2016-08-30 16:28:00 -07:00
shader_enums.c compiler: Add two new system values for subgroups 2018-03-07 12:13:47 -08:00
shader_enums.h compiler: Add two new system values for subgroups 2018-03-07 12:13:47 -08:00
shader_info.h spirv: handle AMD_gcn_shader extended instructions 2018-03-07 23:09:58 +01:00