https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98801
--- Comment #6 from Jeff Hurchalla <jeffhurchalla at gmail dot com> --- I'd be quite satisfied with the simpler option that Peter Cordes wrote: > a non-memory conditional-select builtin that exposes the much more widely > available ALU conditional-select functionality like x86 CMOV, AArch64 CSEL, > MIPS MVN, etc. ... > The ALU-select part can be emulated with AND/OR, so that's something we can > provide on any target. A predicated reg-reg move like this is appealing to me for my needs. It seems common in ISAs and emulatable when not present. I perceive that the security use-case for cmovs could be more important than my motivation for them (my motivation: performance in critical loops containing unpredictable conditionals). I suspect the guarantees needed for security would satisfy me despite having a different motivation.
