diff options
| author | Ian Romanick <[email protected]> | 2019-03-05 14:54:35 -0800 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2019-05-14 11:38:23 -0700 |
| commit | a7f0c57673d2c56c46c4383a7008f525102cd33b (patch) | |
| tree | 7b1347d1c1df743c1316cc7aadd54d3e9bd157a7 /src/compiler/nir/nir_opt_if.c | |
| parent | 281f20e26d840939133209e9f1fc91270b55574e (diff) | |
nir/algebraic: Eliminate useless fsat() on operand of comparison w/value in (0, 1)
v2: Fix copy-and-paste bug in a cmp b vs b cmp a cases.
All Gen7+ platforms had similar results. (Ice Lake shown)
total instructions in shared programs: 17224337 -> 17224269 (<.01%)
instructions in affected programs: 13578 -> 13510 (-0.50%)
helped: 68
HURT: 0
helped stats (abs) min: 1 max: 1 x̄: 1.00 x̃: 1
helped stats (rel) min: 0.31% max: 3.12% x̄: 0.84% x̃: 0.42%
95% mean confidence interval for instructions value: -1.00 -1.00
95% mean confidence interval for instructions %-change: -1.05% -0.63%
Instructions are helped.
total cycles in shared programs: 360826090 -> 360825137 (<.01%)
cycles in affected programs: 94867 -> 93914 (-1.00%)
helped: 58
HURT: 1
helped stats (abs) min: 2 max: 28 x̄: 17.74 x̃: 18
helped stats (rel) min: 0.08% max: 3.17% x̄: 1.39% x̃: 1.22%
HURT stats (abs) min: 76 max: 76 x̄: 76.00 x̃: 76
HURT stats (rel) min: 2.86% max: 2.86% x̄: 2.86% x̃: 2.86%
95% mean confidence interval for cycles value: -19.53 -12.78
95% mean confidence interval for cycles %-change: -1.56% -1.08%
Cycles are helped.
No changes on any other Intel platform.
Reviewed-by: Matt Turner <[email protected]>
Reviewed-by: Thomas Helland <[email protected]>
Diffstat (limited to 'src/compiler/nir/nir_opt_if.c')
0 files changed, 0 insertions, 0 deletions