[Bug target/86673] [8/9 regression] inline asm sometimes ignores 'register asm("reg")' declarations

[sch...@linux-m68k.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86673

--- Comment #4 from Andreas Schwab <sch...@linux-m68k.org> ---
Why are you using empty constraints when a register is required?