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mesa/src/compiler
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Ian Romanick 3250e04d25 nir/algebraic: Add some max/min optimizations with 3 variables 
Specifically, ARB assembly shaders with code like

    SLT    r0, r0, c[0].xxxx;
    ...
    KIL    r0.xyzx;

can result in this pattern.  The other cases (e.g., 'KIL r0.xxxx' and
'KIL r0.xyxx') are handled by existing patterns.

Reviewed-by: Matt Turner <mattst88@gmail.com>

All Intel platforms had similar results. (Tiger Lake shown)
total instructions in shared programs: 21050098 -> 21050065 (<.01%)
instructions in affected programs: 2062 -> 2029 (-1.60%)
helped: 31
HURT: 1
helped stats (abs) min: 1 max: 3 x̄: 1.10 x̃: 1
helped stats (rel) min: 1.14% max: 4.35% x̄: 1.89% x̃: 1.69%
HURT stats (abs)   min: 1 max: 1 x̄: 1.00 x̃: 1
HURT stats (rel)   min: 0.65% max: 0.65% x̄: 0.65% x̃: 0.65%
95% mean confidence interval for instructions value: -1.23 -0.84
95% mean confidence interval for instructions %-change: -2.12% -1.50%
Instructions are helped.

total cycles in shared programs: 855105466 -> 855105055 (<.01%)
cycles in affected programs: 50136 -> 49725 (-0.82%)
helped: 33
HURT: 0
helped stats (abs) min: 3 max: 22 x̄: 12.45 x̃: 12
helped stats (rel) min: 0.13% max: 1.57% x̄: 0.86% x̃: 0.92%
95% mean confidence interval for cycles value: -13.78 -11.13
95% mean confidence interval for cycles %-change: -0.97% -0.76%
Cycles are helped.

No fossil-db changes on any Intel platform.

Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/9122>
2021-02-19 17:31:27 -08:00
..
glsl glsl: Silence a warning at -Og 2021-02-18 20:59:43 +00:00
nir nir/algebraic: Add some max/min optimizations with 3 variables 2021-02-19 17:31:27 -08:00
spirv spirv: Delete the impl for prototype-only functions 2021-02-16 20:50:51 +00:00
Android.glsl.gen.mk android: util: Move xxd.py to util 2020-10-11 23:22:34 +02:00
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: spirv: fix '::' typo in gen rules 2020-12-08 22:44:23 +01:00
Android.nir.mk android: fix libmesa_nir build 2017-07-21 08:47:56 +03:00
builtin_type_macros.h compiler/types: Add 64-bit image types 2020-11-09 17:17:39 +00:00
glsl_types.cpp glsl: Initialize glsl_type member name. 2020-12-16 19:31:25 -08:00
glsl_types.h glsl: Fix typos in comments. 2020-12-16 02:19:56 +00:00
Makefile.sources compiler/nir: add texcoord replace lowering pass 2021-01-25 17:32:33 +00:00
meson.build spirv: add some tests for volatile/available/visible 2020-09-01 17:15:22 +00:00
nir_types.cpp nir: Add a size_align helper function for aligning elements to 16 bytes. 2020-11-16 13:54:22 -08:00
nir_types.h nir: Add a size_align helper function for aligning elements to 16 bytes. 2020-11-16 13:54:22 -08:00
SConscript spirv: Fix building with SCons 2018-03-30 14:33:03 -06:00
SConscript.glsl util: Move xxd.py to util 2020-10-07 21:52:04 +00:00
SConscript.nir nir: use a single canonical list of intrinsic indices 2020-11-26 17:50:38 +00:00
SConscript.spirv scons: fix SPIR-V -> NIR build 2020-10-13 16:53:10 +01:00
shader_enums.c compiler: Drop now unused gl_varying_slot_name() 2021-02-13 00:44:53 +00:00
shader_enums.h compiler: Drop now unused gl_varying_slot_name() 2021-02-13 00:44:53 +00:00
shader_info.h compiler, nir: Add and set barrier metadata 2021-02-12 01:37:05 +00:00