8346922: TestVectorReinterpret.java fails without the rvv extension on RISCV fastdebug VM

Reviewed-by: fyang, kvn

Author: zifeihan

test/hotspot/jtreg/compiler/vectorapi/reshape/TestVectorReinterpret.java

@@ -39,6 +39,7 @@
  * @modules jdk.incubator.vector
  * @modules java.base/jdk.internal.misc
  * @summary Test that vector reinterpret intrinsics work as intended.
+ * @requires os.arch != "riscv64" | vm.cpu.features ~= ".*rvv.*"
  * @library /test/lib /
  * @run main compiler.vectorapi.reshape.TestVectorReinterpret
  */