Clean up GCC compiler warnings.

* Test vectors should be sized for max LMUL.

Change-Id: Ib276377b56a13eb6c8923ae48c366040ef079362
diff --git a/tests/include/test_v_helpers.h b/tests/include/test_v_helpers.h
index 2ba95a0..82818f0 100644
--- a/tests/include/test_v_helpers.h
+++ b/tests/include/test_v_helpers.h
@@ -5,7 +5,7 @@
 
 namespace test_v_helpers {
 
-const uint32_t AVLS[] = {1,    4,    3,     2,     16,    8,    5,    17,
+const int32_t AVLS[] = {1,    4,    3,     2,     16,    8,    5,    17,
                          32,   36,   64,    55,    100,   321,  256,  128,
                          512,  623,  1024,  1100,  1543,  2048, 3052, 4096,
                          5555, 8192, 10241, 16384, 24325, 32768};
diff --git a/tests/vmv_test.cpp b/tests/vmv_test.cpp
index 5be1303..0cc0dd0 100644
--- a/tests/vmv_test.cpp
+++ b/tests/vmv_test.cpp
@@ -12,8 +12,9 @@
 namespace vmv_test {
 namespace {
 
-const int VLEN = 512u;
-const int MAXVL_BYTES = VLEN / sizeof(uint8_t);
+const int LMUL_MAX = 8;
+const int VLEN = 512;
+const int MAXVL_BYTES = VLEN / sizeof(uint8_t) * LMUL_MAX;
 
 using namespace test_v_helpers;
 
@@ -31,7 +32,7 @@
 }
 
 template <typename T>
-static std::tuple<int, int> vmv_test_setup(VLMUL lmul, uint32_t avl) {
+static std::tuple<int, int> vmv_test_setup(VLMUL lmul, int32_t avl) {
   // Clear all vector registers
   zero_vector_registers();
 
@@ -70,7 +71,7 @@
 
 TEST_F(VmvTest, vmv_demo) {
   for (int i = 0; i < AVL_COUNT; i++) {
-    uint32_t avl = AVLS[i];
+    int32_t avl = AVLS[i];
     int vlmax;
     int vl;
     std::tie(vlmax, vl) = vmv_test_setup<uint8_t>(VLMUL::LMUL_M1, avl);
@@ -88,16 +89,16 @@
 // TODO(henryherman): clang vle intrinsic uses vs1r.v (unsupported in renode)
 TEST_F(VmvTest, DISABLED_intrinsic_vmv_demo) {
   for (int i = 0; i < AVL_COUNT; i++) {
-    uint32_t avl = AVLS[i];
+    int32_t avl = AVLS[i];
     int vlmax;
     int vl;
     std::tie(vlmax, vl) = vmv_test_setup<uint8_t>(VLMUL::LMUL_M1, avl);
     if (avl > vlmax) {
       continue;
     }
-    vint8m1_t vec1 = vle8_v_i8m1(test_vector_1, vl);
+    vint8m1_t vec1 = vle8_v_i8m1(reinterpret_cast<int8_t *>(test_vector_1), vl);
     vint8m1_t vec2 = vmv_v_v_i8m1(vec1, vl);
-    uint8_t *ptr_vec_2 = reinterpret_cast<uint8_t *>(test_vector_2);
+    int8_t *ptr_vec_2 = reinterpret_cast<int8_t *>(test_vector_2);
     vse8_v_i8m1(ptr_vec_2, vec2, vl);
     vmv_check<uint8_t>(vlmax);
   }
@@ -106,7 +107,7 @@
 #define DEFINE_TEST_VMV_V_V_I_INTRINSIC(_SEW_, _LMUL_)                         \
   TEST_F(VmvTest, DISABLED_intrinsic_vmv_v_v_i##_SEW_##m##_LMUL_) {            \
     for (int i = 0; i < AVL_COUNT; i++) {                                      \
-      uint32_t avl = AVLS[i];                                                  \
+      int32_t avl = AVLS[i];                                                   \
       int vlmax;                                                               \
       int vl;                                                                  \
       std::tie(vlmax, vl) =                                                    \
@@ -114,11 +115,11 @@
       if (avl > vlmax) {                                                       \
         continue;                                                              \
       }                                                                        \
-      vint##_SEW_##m##_LMUL_##_t vec1 =                                        \
-          vle##_SEW_##_v_i##_SEW_##m##_LMUL_(test_vector_1, vl);               \
+      vint##_SEW_##m##_LMUL_##_t vec1 = vle##_SEW_##_v_i##_SEW_##m##_LMUL_(    \
+          reinterpret_cast<int##_SEW_##_t *>(test_vector_1), vl);              \
       vint##_SEW_##m##_LMUL_##_t vec2 = vmv_v_v_i##_SEW_##m##_LMUL_(vec1, vl); \
-      uint##_SEW_##_t *ptr_vec_2 =                                             \
-          reinterpret_cast<uint##_SEW_##_t *>(test_vector_2);                  \
+      int##_SEW_##_t *ptr_vec_2 =                                              \
+          reinterpret_cast<int##_SEW_##_t *>(test_vector_2);                   \
       vse##_SEW_##_v_i##_SEW_##m##_LMUL_(ptr_vec_2, vec2, vl);                 \
       vmv_check<uint##_SEW_##_t>(vlmax);                                       \
     }                                                                          \
@@ -142,7 +143,7 @@
 #define DEFINE_TEST_VMV_V_V_I(_SEW_, _LMUL_)                           \
   TEST_F(VmvTest, vmv_v_v_i##_SEW_##m##_LMUL_) {                       \
     for (int i = 0; i < AVL_COUNT; i++) {                              \
-      uint32_t avl = AVLS[i];                                          \
+      int32_t avl = AVLS[i];                                           \
       int vlmax;                                                       \
       int vl;                                                          \
       std::tie(vlmax, vl) =                                            \
@@ -178,7 +179,7 @@
 
 TEST_F(VmvTest, vmv_v_x_demo) {
   for (int i = 0; i < AVL_COUNT; i++) {
-    uint32_t avl = AVLS[i];
+    int32_t avl = AVLS[i];
     int vlmax;
     int vl;
     std::tie(vlmax, vl) = vmv_test_setup<uint8_t>(VLMUL::LMUL_M1, avl);
@@ -200,7 +201,7 @@
 #define DEFINE_TEST_VMV_V_X_I(_SEW_, _LMUL_, TEST_VAL)                 \
   TEST_F(VmvTest, vmv_v_x_e##_SEW_##m##_LMUL_) {                       \
     for (int i = 0; i < AVL_COUNT; i++) {                              \
-      uint32_t avl = AVLS[i];                                          \
+      int32_t avl = AVLS[i];                                           \
       int vlmax;                                                       \
       int vl;                                                          \
       std::tie(vlmax, vl) =                                            \
@@ -239,7 +240,7 @@
 
 TEST_F(VmvTest, vmv_v_i_demo) {
   for (int i = 0; i < AVL_COUNT; i++) {
-    uint32_t avl = AVLS[i];
+    int32_t avl = AVLS[i];
     int vlmax;
     int vl;
     std::tie(vlmax, vl) = vmv_test_setup<uint8_t>(VLMUL::LMUL_M1, avl);
@@ -261,7 +262,7 @@
 #define DEFINE_TEST_VMV_V_I_I(_SEW_, _LMUL_, TEST_VAL)                 \
   TEST_F(VmvTest, vmv_v_i_e##_SEW_##m##_LMUL_) {                       \
     for (int i = 0; i < AVL_COUNT; i++) {                              \
-      uint32_t avl = AVLS[i];                                          \
+      int32_t avl = AVLS[i];                                           \
       int vlmax;                                                       \
       int vl;                                                          \
       std::tie(vlmax, vl) =                                            \