cpu_has_nan_2008
#ifndef cpu_has_nan_2008
if (!cpu_has_nan_2008) {
mips_use_nan_2008 = !!cpu_has_nan_2008;
mips_use_nan_legacy = !cpu_has_nan_2008;
mips_use_nan_2008 = !!cpu_has_nan_2008;
if (cpu_has_nan_2008)