static void test_fun(byte[] a0, int[] b0, byte[] c0) {
    for (int i=0; i<ARRLEN; i++) {
      c0[i] = (byte)(a0[i] << (7) | a0[i] >>> (-7));
    }
  }

when I implement RotateLeftV in loongarch.ad, I found this executed by c2 vector and executed by interpreter are not equal.

It's executed on x86 would create an assert error.

#
# Internal Error (/home/wanghaomin/jdk/src/hotspot/share/opto/vectornode.cpp:347), pid=26469, tid=26485
# assert(false) failed: not supported: byte
#