diff options
| author | Ian Romanick <[email protected]> | 2017-02-09 15:21:47 +0000 |
|---|---|---|
| committer | Ian Romanick <[email protected]> | 2019-03-01 12:42:14 -0800 |
| commit | cb3e21cd1925c9378b4acb869601bbb011d0de97 (patch) | |
| tree | 877b1c9dfdec0e962bcd52b12d83c910cf6a7810 /src/mesa/main/uniform_query.cpp | |
| parent | 8eb36c912955407f9f1d7aba968fe9513cc8e325 (diff) | |
intel/fs: Use De Morgan's laws to avoid logical-not of a logic result on Gen8+
Instead of emitting ~(a & b), emit (~a | ~b) since logical-not of
operands is free on Gen8+.
v2: Fix swizzles. Fix types for cmod propagation.
v3: Simplify logic for inverting source of inot(ixor(a, b)). Suggested
by Ken.
Skylake and Broadwell had similar results. (Skylake shown)
Skylake
total instructions in shared programs: 15185593 -> 15185583 (<.01%)
instructions in affected programs: 5673 -> 5663 (-0.18%)
helped: 12
HURT: 1
helped stats (abs) min: 1 max: 2 x̄: 1.17 x̃: 1
helped stats (rel) min: 0.30% max: 5.88% x̄: 1.50% x̃: 0.70%
HURT stats (abs) min: 4 max: 4 x̄: 4.00 x̃: 4
HURT stats (rel) min: 0.12% max: 0.12% x̄: 0.12% x̃: 0.12%
95% mean confidence interval for instructions value: -1.66 0.13
95% mean confidence interval for instructions %-change: -2.60% -0.15%
Inconclusive result (value mean confidence interval includes 0).
total cycles in shared programs: 370977726 -> 370964249 (<.01%)
cycles in affected programs: 869987 -> 856510 (-1.55%)
helped: 15
HURT: 2
helped stats (abs) min: 2 max: 6640 x̄: 902.20 x̃: 16
helped stats (rel) min: <.01% max: 4.92% x̄: 1.71% x̃: 1.53%
HURT stats (abs) min: 14 max: 42 x̄: 28.00 x̃: 28
HURT stats (rel) min: 1.08% max: 3.18% x̄: 2.13% x̃: 2.13%
95% mean confidence interval for cycles value: -1654.87 69.34
95% mean confidence interval for cycles %-change: -2.29% -0.23%
Inconclusive result (value mean confidence interval includes 0).
Reviewed-by: Kenneth Graunke <[email protected]>
Diffstat (limited to 'src/mesa/main/uniform_query.cpp')
0 files changed, 0 insertions, 0 deletions