[Bug rtl-optimization/89313] [9 Regression] ICE in process_alt_operands, at lra-constraints.c:2962

[bergner at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89313

--- Comment #4 from Peter Bergner <bergner at gcc dot gnu.org> ---
Actually, the error message:

    z1.c:7:1: error: unable to generate reloads for impossible constraints:

is a new LRA test that I added as part of one of my other commits that is
catching the illegal register constraints being used, so this is a correct
error message.  That said, we probably should still catch this earlier in
expand_asm_stmt().