[Bug target/90193] [8/9 Regression] asm goto with TLS "m" input operand generates incorrect assembler in O1 and O2

[segher at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90193

--- Comment #7 from Segher Boessenkool <segher at gcc dot gnu.org> ---
The same splitter is what causes the bb of the asm to be marked as
always falling through, which is why that non-fallthrough label is
eventually deleted.