[Bug rtl-optimization/101882] [16 Regression] combine vs. insn with earlyclobber and input and output set to a hard register

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101882

--- Comment #16 from Segher Boessenkool <segher at gcc dot gnu.org> ---
It is allowed by recog().  Most likely your pattern is incorrect, but it
is not completely impossible there is something wrong in genrecog.cc --
but that isn't combine either.