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mesa/src/compiler
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Ian Romanick bf0d60aa11 nir: Simplify i2b with negated or abs operand 
This enables removing ssa_201 and ssa_202 in sequences like:

                 vec1 ssa_200 = flt ssa_199, ssa_194
                 vec1 ssa_201 = b2i ssa_200
                 vec1 ssa_202 = i2b -ssa_201

shader-db results:

Sandy Bridge
total instructions in shared programs: 8462257 -> 8462180 (-0.00%)
instructions in affected programs: 3846 -> 3769 (-2.00%)
helped: 35
HURT: 0

total cycles in shared programs: 117542934 -> 117542462 (-0.00%)
cycles in affected programs: 20072 -> 19600 (-2.35%)
helped: 20
HURT: 1

Ivy Bridge
total instructions in shared programs: 7775252 -> 7775137 (-0.00%)
instructions in affected programs: 3645 -> 3530 (-3.16%)
helped: 35
HURT: 0

total cycles in shared programs: 65760522 -> 65760068 (-0.00%)
cycles in affected programs: 21082 -> 20628 (-2.15%)
helped: 25
HURT: 2

Haswell
total instructions in shared programs: 7108666 -> 7108589 (-0.00%)
instructions in affected programs: 3253 -> 3176 (-2.37%)
helped: 35
HURT: 0

total cycles in shared programs: 64675726 -> 64675272 (-0.00%)
cycles in affected programs: 21034 -> 20580 (-2.16%)
helped: 26
HURT: 1

Broadwell / Skylake
total instructions in shared programs: 8980912 -> 8980835 (-0.00%)
instructions in affected programs: 3223 -> 3146 (-2.39%)
helped: 35
HURT: 0

total cycles in shared programs: 70077926 -> 70077904 (-0.00%)
cycles in affected programs: 21886 -> 21864 (-0.10%)
helped: 21
HURT: 6

G45 and Ironlake showed no change.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Suggested-by: Jason Ekstrand <jason.ekstrand@intel.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
2016-03-22 14:43:28 -07:00
..
glsl glsl: disable varying packing when its not safe 2016-03-18 10:26:34 +11:00
nir nir: Simplify i2b with negated or abs operand 2016-03-22 14:43:28 -07:00
.gitignore compiler: fix .gitignore for glsl_compiler 2016-02-03 13:32:46 -05:00
Android.gen.mk Android: fix build break from nir/glsl move to compiler/ 2016-02-29 10:51:44 +00:00
Android.mk nir: move to compiler/ 2016-01-26 16:08:30 +00:00
builtin_type_macros.h glsl/types: Add a bare "sampler" type 2016-02-13 17:22:36 -08:00
glsl_types.cpp glsl: add offset to glsl interface type 2016-03-05 19:38:34 +11:00
glsl_types.h glsl: add offset to glsl interface type 2016-03-05 19:38:34 +11:00
Makefile.am glsl: Ensure glsl/ exists before making the lexer/parser. 2016-02-04 09:31:17 -08:00
Makefile.sources nir: Add a pass for lower indirect variable dereferences 2016-03-08 10:41:54 -08:00
nir_types.cpp nir/types: Add more type constructor functions 2016-02-13 17:22:36 -08:00
nir_types.h nir/types: add a function to get the bitsize of a base type 2016-03-17 11:16:33 +01:00
SConscript glsl: move to compiler/ 2016-01-26 16:08:33 +00:00
shader_enums.c nir: move shader_enums.[ch] to compiler 2016-01-26 16:08:20 +00:00
shader_enums.h glsl: keep track of ssbo variable being accessed, add access params 2016-01-29 21:05:08 -05:00