ALLOC WORSE                                      llf    llf -flate-float-leave-LNE
            boyer2              3901736           -7.0%           +0.0%
            puzzle            165864064          -19.1%           -2.9%

  TIME BETTER
    fannkuch-redux                 6.55          +11.7%           -0.1%
         --  382807736 ENT_LNE_ctr      <-- likely part of the improvement
             fasta                 1.11           +1.2%           +0.0%
              life                 0.43           +3.8%           -0.8%
               scs                 0.99           -0.3%           -4.7%
     spectral-norm                 3.25           +2.8%           +0.0%
              wang                 0.22           +0.0%           -3.0%

Also causes slowdowns, but I don't immediately see why

   TIME WORSE
      binary-trees                 1.67           +1.4%           +5.0%
            hidden                 0.77           -3.9%           +0.4%
           integer                 2.78           -4.7%           -0.7%
         typecheck                 0.36           -5.6%           +2.8%

I looked at typecheck's ticky and CorePrep changes and didn't see
anything indicative. Ugh.