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  • Ian Romanick's avatar
    nir/flrp: Reassociate add in flrp(±1, b, c) lowering path · ed5f0245
    Ian Romanick authored
    
    
    With this reassociation, this lowering path is still beneficial.
    
    Ice Lake
    total instructions in shared programs: 17220191 -> 17207181 (-0.08%)
    instructions in affected programs: 999871 -> 986861 (-1.30%)
    helped: 3703
    HURT: 17
    helped stats (abs) min: 1 max: 686 x̄: 3.52 x̃: 3
    helped stats (rel) min: 0.09% max: 51.97% x̄: 2.21% x̃: 1.35%
    HURT stats (abs)   min: 1 max: 9 x̄: 1.47 x̃: 1
    HURT stats (rel)   min: 0.08% max: 4.55% x̄: 0.78% x̃: 0.55%
    95% mean confidence interval for instructions value: -4.01 -2.99
    95% mean confidence interval for instructions %-change: -2.29% -2.11%
    Instructions are helped.
    
    total cycles in shared programs: 360871298 -> 360755040 (-0.03%)
    cycles in affected programs: 9931334 -> 9815076 (-1.17%)
    helped: 2388
    HURT: 1569
    helped stats (abs) min: 1 max: 10228 x̄: 93.54 x̃: 18
    helped stats (rel) min: <.01% max: 74.11% x̄: 3.36% x̃: 1.07%
    HURT stats (abs)   min: 1 max: 1917 x̄: 68.27 x̃: 22
    HURT stats (rel)   min: <.01% max: 44.90% x̄: 3.44% x̃: 1.72%
    95% mean confidence interval for cycles value: -39.48 -19.28
    95% mean confidence interval for cycles %-change: -0.86% -0.46%
    Cycles are helped.
    
    total spills in shared programs: 12355 -> 12159 (-1.59%)
    spills in affected programs: 295 -> 99 (-66.44%)
    helped: 2
    HURT: 1
    
    total fills in shared programs: 25398 -> 25207 (-0.75%)
    fills in affected programs: 288 -> 97 (-66.32%)
    helped: 2
    HURT: 1
    
    LOST:   3
    GAINED: 44
    
    Iron Lake
    total instructions in shared programs: 8169225 -> 8159729 (-0.12%)
    instructions in affected programs: 1025712 -> 1016216 (-0.93%)
    helped: 3352
    HURT: 0
    helped stats (abs) min: 1 max: 6 x̄: 2.83 x̃: 3
    helped stats (rel) min: 0.15% max: 12.00% x̄: 1.51% x̃: 1.05%
    95% mean confidence interval for instructions value: -2.86 -2.80
    95% mean confidence interval for instructions %-change: -1.56% -1.46%
    Instructions are helped.
    
    total cycles in shared programs: 188656796 -> 188612280 (-0.02%)
    cycles in affected programs: 18633584 -> 18589068 (-0.24%)
    helped: 3085
    HURT: 14
    helped stats (abs) min: 2 max: 72 x̄: 14.45 x̃: 12
    helped stats (rel) min: 0.02% max: 5.73% x̄: 0.73% x̃: 0.31%
    HURT stats (abs)   min: 2 max: 4 x̄: 3.71 x̃: 4
    HURT stats (rel)   min: <.01% max: <.01% x̄: <.01% x̃: <.01%
    95% mean confidence interval for cycles value: -14.55 -14.18
    95% mean confidence interval for cycles %-change: -0.76% -0.69%
    Cycles are helped.
    
    GM45
    total instructions in shared programs: 5026905 -> 5021856 (-0.10%)
    instructions in affected programs: 584169 -> 579120 (-0.86%)
    helped: 1776
    HURT: 0
    helped stats (abs) min: 1 max: 6 x̄: 2.84 x̃: 3
    helped stats (rel) min: 0.15% max: 11.11% x̄: 1.43% x̃: 0.98%
    95% mean confidence interval for instructions value: -2.88 -2.80
    95% mean confidence interval for instructions %-change: -1.50% -1.37%
    Instructions are helped.
    
    total cycles in shared programs: 129047376 -> 129018918 (-0.02%)
    cycles in affected programs: 12941924 -> 12913466 (-0.22%)
    helped: 1722
    HURT: 14
    helped stats (abs) min: 4 max: 72 x̄: 16.56 x̃: 18
    helped stats (rel) min: 0.02% max: 5.73% x̄: 0.72% x̃: 0.30%
    HURT stats (abs)   min: 2 max: 4 x̄: 3.71 x̃: 4
    HURT stats (rel)   min: <.01% max: <.01% x̄: <.01% x̃: <.01%
    95% mean confidence interval for cycles value: -16.65 -16.13
    95% mean confidence interval for cycles %-change: -0.76% -0.66%
    Cycles are helped.
    
    Reviewed-by: default avatarMatt Turner <mattst88@gmail.com>
    Reviewed-by: default avatarSamuel Pitoiset <samuel.pitoiset@gmail.com>
    ed5f0245