https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70896
--- Comment #6 from PeteVine <tulipawn at gmail dot com> --- Building with -mfpu=neon has duly helped. The fpu configure option is probably not relevant here (simply setting the default for emitted code) but rather the CFLAGS used for compiling these intrinsics. (-mfpu=vfpv4)
