Add benchmarks from riscv-tests

bench/vvadd.c

@@ -0,0 +1,48 @@
+//**************************************************************************
+// Vector-vector add benchmark
+//--------------------------------------------------------------------------
+//
+// This benchmark uses adds to vectors and writes the results to a
+// third vector.
+
+int input1_vvadd[1000];
+int input2_vvadd[1000];
+int results_vvadd[1000];
+
+void vvadd_init(int nonce) {
+    int i;
+    int x = nonce;
+    int y = nonce;
+
+    for (i = 0; i < 1000; i++) {
+        x = (x * 97 + 17) % 1009;
+        y = (x * 17 + 23) % 1007;
+        input1_vvadd[i] = x;
+        input2_vvadd[i] = y;
+    }
+}
+
+void vvadd(int n, int a[1000], int b[1000], int c[1000]) {
+    int i;
+
+    for (i = 0; i < n; i++)
+        c[i] = a[i] + b[i];
+}
+
+int verify_vvadd(int n, int* test) {
+    int i;
+    int result = 0;
+
+    for (i = 0; i < n; i++) {
+        int v = test[i];
+        result += v;
+    }
+
+    return result;
+}
+
+int run_vvadd(int dummy_0, int nonce) {
+    vvadd_init(nonce);
+    vvadd(1000, input1_vvadd, input2_vvadd, results_vvadd);
+    return verify_vvadd(1000, results_vvadd);
+}