[Bug target/89399] [7/8/9 Regression] ICE: RTL check: expected code 'set', 'clobber' or 'clobber_high', have 'parallel' in combine_reaching_defs, at ree.c:783

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89399

--- Comment #4 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
At least from the comments, get_sub_rtx is like single_set, except that it
doesn't allow insns with two sets where one of them is dead.  If we initially
checked with single_set and then use get_sub_rtx, it might fail.

I think this issue has been introduced in r206418.