[Bug rtl-optimization/122992] speed up loops with TEST_HARD_REG_BIT using EXECUTE_IF_SET_IN_HARD_REG_SET

[schwab--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122992

--- Comment #39 from Andreas Schwab <sch...@linux-m68k.org> ---
But the build errors are in the m68k and pdp11 targets which were never tested.