Minor regressions from removal of non-linear behavior from simplifier
#13379 (closed) exposed non-linear behavior simplifying certain nested function applications. Simon PJ fixed that in a1b753e8, and then made an adjustment in 29d88ee1. Gipeda revealed a couple of small regressions from this combination (I'm not sure which did what, but IIRC the second patch mostly fixed regressions in the first).
nofib/time/cryptarithm1 time increases 4.87% from 0.513s to 0.538s nofib/size/scs code size increases 5.28% from 1224890 bytes to 1289570 bytes
Note that there are a few comments on #13397 (closed) relating to these regressions.