Ian Romanick be7d3ba34a nir: Transform -fabs(a) < 0 to a != 0 ...

Unlike the much older -abs(a) >= 0.0 transformation, this is not
precise.  The behavior changes if a is NaN.

All Gen platforms had pretty similar results. (Skylake shown)
total instructions in shared programs: 14277216 -> 14277184 (<.01%)
instructions in affected programs: 2300 -> 2268 (-1.39%)
helped: 8
HURT: 0
helped stats (abs) min: 1 max: 8 x̄: 4.00 x̃: 3
helped stats (rel) min: 0.48% max: 15.15% x̄: 4.41% x̃: 1.01%
95% mean confidence interval for instructions value: -6.45 -1.55
95% mean confidence interval for instructions %-change: -9.96% 1.13%
Inconclusive result (%-change mean confidence interval includes 0).

total cycles in shared programs: 532577848 -> 532577990 (<.01%)
cycles in affected programs: 17486 -> 17628 (0.81%)
helped: 2
HURT: 5
helped stats (abs) min: 2 max: 6 x̄: 4.00 x̃: 4
helped stats (rel) min: 0.06% max: 1.81% x̄: 0.93% x̃: 0.93%
HURT stats (abs)   min: 6 max: 50 x̄: 30.00 x̃: 26
HURT stats (rel)   min: 0.55% max: 2.17% x̄: 1.19% x̃: 1.02%
95% mean confidence interval for cycles value: -1.06 41.63
95% mean confidence interval for cycles %-change: -0.58% 1.74%
Inconclusive result (value mean confidence interval includes 0).

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Thomas Helland <thomashelland90@gmail.com>

2018-08-04 01:12:03 -07:00

..

glsl

glsl: use util_snprintf()

2018-08-02 10:06:44 +03:00

nir

nir: Transform -fabs(a) < 0 to a != 0

2018-08-04 01:12:03 -07:00

spirv

compiler/spirv: add XFB and GeometryStreams capability check support

2018-07-31 13:33:28 +02:00

.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 a missing nir_intrinsics.h error

2018-07-21 08:50:23 +02:00

Android.nir.mk

android: fix libmesa_nir build

2017-07-21 08:47:56 +03:00

blob.c

compiler/blob: Add blob_skip_bytes

2018-07-09 23:02:33 -07:00

blob.h

compiler/blob: Add blob_skip_bytes

2018-07-09 23:02:33 -07:00

builtin_type_macros.h

glsl_types: vec8/vec16 support

2018-03-25 10:42:54 -04:00

glsl_types.cpp

glsl: use util_snprintf()

2018-08-02 10:06:44 +03:00

glsl_types.h

nir: add 16bit type information to glsl types

2018-07-23 23:16:25 +02:00

Makefile.am

autotools: Include new meson files

2018-04-20 20:26:56 -07:00

Makefile.glsl.am

glsl: fold glcpp-test-cr-lf.sh into glcpp-test.sh

2018-06-21 12:09:39 +01:00

Makefile.nir.am

nir: Fix a typo in src/compiler/Makefile.nir.am

2018-04-09 08:32:45 -06:00

Makefile.sources

nir/linker: Add the start of a pure-NIR linker for XFB

2018-07-31 13:33:37 +02:00

Makefile.spirv.am

spirv: autotools: add vtn_gather_types_c.py in distribution tarball

2018-04-10 10:37:46 +02:00

meson.build

meson: remove dummy_cpp

2018-04-24 14:08:15 -07:00

nir_types.cpp

nir/types: Add a wrapper to access gl_type

2018-07-31 13:33:37 +02:00

nir_types.h

nir/types: Add a wrapper to access gl_type

2018-07-31 13:33:37 +02:00

SConscript

spirv: Fix building with SCons

2018-03-30 14:33:03 -06:00

SConscript.glsl

mesa: Remove prog_hash_table.c

2016-09-12 10:48:35 +10:00

SConscript.nir

nir: mako all the intrinsics

2018-03-27 08:36:37 -04:00

SConscript.spirv

spirv: Fix building with SCons

2018-03-30 14:33:03 -06:00

shader_enums.c

nir/spirv: implement BuiltInWorkDim

2018-07-15 07:51:13 +02:00

shader_enums.h

nir/spirv: implement BuiltInWorkDim

2018-07-15 07:51:13 +02:00

shader_info.h

compiler/spirv: add XFB and GeometryStreams capability check support

2018-07-31 13:33:28 +02:00