HI,why the VFP vector mode can not be used in cortex-a series processors?
i still do not understand the reason why became slower int cortex-a processors using VFP vector mode,can you explain it in more details ?
There isn't really any more detail that will be useful; it's deprecated, slower on ARMv7, and totally removed in ARMv8. There are at least two fast non-deprecated alternatives; write non-vector VFP code with multiple instructions or use NEON.
HTH, Pete