diff options
author | Ian Romanick <[email protected]> | 2018-02-13 17:44:00 -0800 |
---|---|---|
committer | Ian Romanick <[email protected]> | 2019-08-05 20:14:13 -0700 |
commit | d24edb4b8cd6d787f7b7881e038a1e5bf9a0eab8 (patch) | |
tree | abb1b7f4ef10a0d74bd2f874dd7a8b31008da011 /src | |
parent | 7c64cbf49db1573cd611ee82db3d6c8654d308a7 (diff) |
nir/algebraic: Simplify some comparisons like a+constant < constant
v2: Remove unsafe integer versions of the optimizations. This change
had no effect on shader-db results. Suggested by Caio.
All Gen6+ platforms had similar results. (Ice Lake shown)
total instructions in shared programs: 16333713 -> 16332631 (<.01%)
instructions in affected programs: 258112 -> 257030 (-0.42%)
helped: 1275
HURT: 407
helped stats (abs) min: 1 max: 7 x̄: 1.17 x̃: 1
helped stats (rel) min: 0.20% max: 8.33% x̄: 1.33% x̃: 0.86%
HURT stats (abs) min: 1 max: 2 x̄: 1.00 x̃: 1
HURT stats (rel) min: 0.11% max: 2.94% x̄: 0.98% x̃: 0.98%
95% mean confidence interval for instructions value: -0.70 -0.59
95% mean confidence interval for instructions %-change: -0.84% -0.70%
Instructions are helped.
total cycles in shared programs: 367596791 -> 367601268 (<.01%)
cycles in affected programs: 3420062 -> 3424539 (0.13%)
helped: 1553
HURT: 783
helped stats (abs) min: 1 max: 742 x̄: 24.36 x̃: 6
helped stats (rel) min: 0.05% max: 21.12% x̄: 1.47% x̃: 0.65%
HURT stats (abs) min: 1 max: 557 x̄: 54.04 x̃: 14
HURT stats (rel) min: 0.01% max: 33.66% x̄: 3.36% x̃: 1.43%
95% mean confidence interval for cycles value: -1.60 5.43
95% mean confidence interval for cycles %-change: -0.03% 0.33%
Inconclusive result (value mean confidence interval includes 0).
LOST: 0
GAINED: 2
Iron Lake
total instructions in shared programs: 8137992 -> 8137874 (<.01%)
instructions in affected programs: 17501 -> 17383 (-0.67%)
helped: 104
HURT: 2
helped stats (abs) min: 1 max: 2 x̄: 1.17 x̃: 1
helped stats (rel) min: 0.25% max: 2.63% x̄: 0.87% x̃: 0.72%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.45% max: 0.45% x̄: 0.45% x̃: 0.45%
95% mean confidence interval for instructions value: -1.22 -1.00
95% mean confidence interval for instructions %-change: -0.94% -0.76%
Instructions are helped.
total cycles in shared programs: 188540038 -> 188539650 (<.01%)
cycles in affected programs: 704574 -> 704186 (-0.06%)
helped: 125
HURT: 84
helped stats (abs) min: 2 max: 96 x̄: 6.45 x̃: 4
helped stats (rel) min: <.01% max: 3.47% x̄: 0.42% x̃: 0.25%
HURT stats (abs) min: 2 max: 58 x̄: 4.98 x̃: 4
HURT stats (rel) min: 0.01% max: 2.75% x̄: 0.36% x̃: 0.33%
95% mean confidence interval for cycles value: -3.20 -0.52
95% mean confidence interval for cycles %-change: -0.19% -0.03%
Cycles are helped.
GM45
total instructions in shared programs: 5008889 -> 5008830 (<.01%)
instructions in affected programs: 8824 -> 8765 (-0.67%)
helped: 52
HURT: 1
helped stats (abs) min: 1 max: 2 x̄: 1.17 x̃: 1
helped stats (rel) min: 0.25% max: 2.38% x̄: 0.86% x̃: 0.72%
HURT stats (abs) min: 2 max: 2 x̄: 2.00 x̃: 2
HURT stats (rel) min: 0.45% max: 0.45% x̄: 0.45% x̃: 0.45%
95% mean confidence interval for instructions value: -1.27 -0.95
95% mean confidence interval for instructions %-change: -0.96% -0.71%
Instructions are helped.
total cycles in shared programs: 128969426 -> 128969128 (<.01%)
cycles in affected programs: 399798 -> 399500 (-0.07%)
helped: 74
HURT: 30
helped stats (abs) min: 2 max: 22 x̄: 6.76 x̃: 6
helped stats (rel) min: <.01% max: 1.83% x̄: 0.46% x̃: 0.29%
HURT stats (abs) min: 2 max: 58 x̄: 6.73 x̃: 6
HURT stats (rel) min: 0.06% max: 2.75% x̄: 0.42% x̃: 0.21%
95% mean confidence interval for cycles value: -4.60 -1.14
95% mean confidence interval for cycles %-change: -0.32% -0.08%
Cycles are helped.
Reviewed-by: Caio Marcelo de Oliveira Filho <[email protected]>
Diffstat (limited to 'src')
-rw-r--r-- | src/compiler/nir/nir_opt_algebraic.py | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/compiler/nir/nir_opt_algebraic.py b/src/compiler/nir/nir_opt_algebraic.py index b26adc750f9..29ef4eb13bf 100644 --- a/src/compiler/nir/nir_opt_algebraic.py +++ b/src/compiler/nir/nir_opt_algebraic.py @@ -326,6 +326,14 @@ optimizations = [ (('~fge', ('fadd', a, b), a), ('fge', b, 0.0)), (('~feq', ('fadd', a, b), a), ('feq', b, 0.0)), (('~fne', ('fadd', a, b), a), ('fne', b, 0.0)), + (('~flt', ('fadd(is_used_once)', a, '#b'), '#c'), ('flt', a, ('fadd', c, ('fneg', b)))), + (('~flt', ('fneg(is_used_once)', ('fadd(is_used_once)', a, '#b')), '#c'), ('flt', ('fneg', ('fadd', c, b)), a)), + (('~fge', ('fadd(is_used_once)', a, '#b'), '#c'), ('fge', a, ('fadd', c, ('fneg', b)))), + (('~fge', ('fneg(is_used_once)', ('fadd(is_used_once)', a, '#b')), '#c'), ('fge', ('fneg', ('fadd', c, b)), a)), + (('~feq', ('fadd(is_used_once)', a, '#b'), '#c'), ('feq', a, ('fadd', c, ('fneg', b)))), + (('~feq', ('fneg(is_used_once)', ('fadd(is_used_once)', a, '#b')), '#c'), ('feq', ('fneg', ('fadd', c, b)), a)), + (('~fne', ('fadd(is_used_once)', a, '#b'), '#c'), ('fne', a, ('fadd', c, ('fneg', b)))), + (('~fne', ('fneg(is_used_once)', ('fadd(is_used_once)', a, '#b')), '#c'), ('fne', ('fneg', ('fadd', c, b)), a)), # Cannot remove the addition from ilt or ige due to overflow. (('ieq', ('iadd', a, b), a), ('ieq', b, 0)), |