https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82989
--- Comment #15 from Matthijs van Duin <matthijsvanduin at gmail dot com> --- (In reply to Wilco from comment #14) > Yes on older cores it can be a bad idea to allow accidental use of Neon > instructions. The simplest workaround is to switch off Neon, just use > -mfpu=vfp. Sure, though that's not exactly ideal since it is very desirable for the Neon unit to be used for single-precision floats. (9-10 cycles for add/sub in VFP, 10-12 cycles for mul in VFP, 1 cycle for two add/sub/mul ops in Neon)
