RISC-V: added vectorized soft AES

src/crypto/randomx/tests/riscv64_vector.s

@@ -0,0 +1,14 @@
+/* RISC-V - test if the vector extension and prefetch instruction are present */
+
+.text
+.option arch, rv64gcv_zicbop
+.global main
+
+main:
+	lla x5, main
+	prefetch.r (x5)
+	li x5, 4
+	vsetvli x6, x5, e64, m1, ta, ma
+	vxor.vv v0, v0, v0
+	sub x10, x5, x6
+	ret