[AARCH64, NEON] Any regression testcase for AARCH64 NEON intrinsics in GCC testsuite?

[Yangfei (Felix)]

Hi,

  I am trying to improve the AARCH64 NEON intrinsics. It seems that we don't 
enough testcases for this part in GCC testsuite.
  How do you guys test your patch on this part? Any suggestions? Thanks.