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

[fche at redhat dot com via Gcc-bugs]

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

--- Comment #38 from Frank Ch. Eigler <fche at redhat dot com> ---
(Not sure what you mean: the tools found both x86-64 test-time and arm64
bootstrap-time problems.)