Use busywait only on X86 and ARM.
Use busywait only on X86 and ARM.

efeguney/gemmlowp,google/gemmlowp,google/gemmlowp,maciekcc/gemmlowp,google/gemmlowp,maciekcc/gemmlowp,petewarden/gemmlowp,maciekcc/gemmlowp,efeguney/gemmlowp,efeguney/gemmlowp,google/gemmlowp,petewarden/gemmlowp,petewarden/gemmlowp,petewarden/gemmlowp