[Bug rtl-optimization/65693] [4.8/4.9/5 Regression] ICE in assign_by_spills, at lra-assigns.c:1419

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65693

--- Comment #11 from Segher Boessenkool <segher at gcc dot gnu.org> ---
I see GCC not trying to throw away the useless arm of the parallel,
just as comment 7 mentions.  I wonder why that is, investigating.

This isn't the root cause; it is just exposing a problem in the RA :-(