https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64532
baoshan <pangbw at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |pangbw at gmail dot com --- Comment #1 from baoshan <pangbw at gmail dot com> --- One observation is that without "-mfloat-abi=hard -mfpu=neon", I will get this: ./xgcc y.i -B. -O2 y.i: In function ‘s32_to_f32_imm1’: y.i:4:3: error: inconsistent operand constraints in an ‘asm’ __asm__ ("vcvt.f32.s32 %0, %1, #1" : "=w"(y) : "0"(x));