tests/vadd_vx_test.cpp

#include <limits.h>
#include <riscv_vector.h>
#include <softrvv.h>
#include <springbok.h>
#include <stdio.h>
#include <stdlib.h>

#include <bit>
#include <tuple>

#include "pw_unit_test/framework.h"
#include "test_v_helpers.h"

namespace vadd_vx_test {
namespace {

using namespace test_v_helpers;

uint8_t test_vector_1[MAXVL_BYTES];
uint8_t reference_vector_1[MAXVL_BYTES];

class VaddVxTest : public ::testing::Test {
 protected:
  void SetUp() override { zero_vector_registers(); }
  void TearDown() override { zero_vector_registers(); }
};

// Below is a non-macro version of the test for more convenient debugging.
// Remove the "DISABLED_" prefix to enable this test for debugging.
TEST_F(VaddVxTest, DISABLED_vadd_vx_demo) {
  for (int i = 0; i < AVL_COUNT; i++) {
    int32_t avl = AVLS[i];
    int vlmax;
    int vl;
    std::tie(vlmax, vl) = vector_test_setup<int8_t>(
        VLMUL::LMUL_M1, avl, test_vector_1, reference_vector_1);
    if (avl > vlmax) {
      continue;
    }
    int8_t *ptr_vec_1 = reinterpret_cast<int8_t *>(test_vector_1);
    int8_t *ptr_ref_vec_1 = reinterpret_cast<int8_t *>(reference_vector_1);
    int8_t test_val = 8;
    __asm__ volatile("vadd.vx v8, v8, %[RS1]" ::[RS1] "r"(test_val));
    softrvv::vadd_vx<int8_t>(ptr_ref_vec_1, ptr_ref_vec_1, &test_val, avl);
    __asm__ volatile("vse8.v v8, (%0)" : : "r"(ptr_vec_1));
    assert_vec_elem_eq<int8_t>(vlmax, test_vector_1, reference_vector_1);
  }
}

#define DEFINE_TEST_VADD_VX(_SEW_, _LMUL_, TEST_VAL)                      \
  TEST_F(VaddVxTest, vadd_vx##_SEW_##m##_LMUL_) {                         \
    for (int i = 0; i < AVL_COUNT; i++) {                                 \
      int32_t avl = AVLS[i];                                              \
      int vlmax;                                                          \
      int vl;                                                             \
      std::tie(vlmax, vl) = vector_test_setup<int##_SEW_##_t>(            \
          VLMUL::LMUL_M##_LMUL_, avl, test_vector_1, reference_vector_1); \
      if (avl > vlmax) {                                                  \
        continue;                                                         \
      }                                                                   \
      int##_SEW_##_t *ptr_vec_1 =                                         \
          reinterpret_cast<int##_SEW_##_t *>(test_vector_1);              \
      int##_SEW_##_t *ptr_ref_vec_1 =                                     \
          reinterpret_cast<int##_SEW_##_t *>(reference_vector_1);         \
      const int##_SEW_##_t test_val = TEST_VAL;                           \
      __asm__ volatile("vadd.vx v8, v8, %[RS1]" ::[RS1] "r"(test_val));   \
      softrvv::vadd_vx<int##_SEW_##_t>(ptr_ref_vec_1, ptr_ref_vec_1,      \
                                       &test_val, avl);                   \
      __asm__ volatile("vse" #_SEW_ ".v v8, (%0)" : : "r"(ptr_vec_1));    \
      assert_vec_elem_eq<int##_SEW_##_t>(vlmax, test_vector_1,            \
                                         reference_vector_1);             \
    }                                                                     \
  }

// TODO(gkielian): modify macro to permit more than one test per sew/lmul pair
DEFINE_TEST_VADD_VX(8, 1, INT8_MIN)
DEFINE_TEST_VADD_VX(8, 2, INT8_MAX)
DEFINE_TEST_VADD_VX(8, 4, -1)
DEFINE_TEST_VADD_VX(8, 8, 2)

DEFINE_TEST_VADD_VX(16, 1, INT16_MIN)
DEFINE_TEST_VADD_VX(16, 2, INT16_MAX)
DEFINE_TEST_VADD_VX(16, 4, -1)
DEFINE_TEST_VADD_VX(16, 8, 2)

DEFINE_TEST_VADD_VX(32, 1, INT32_MIN)
DEFINE_TEST_VADD_VX(32, 2, INT32_MAX)
DEFINE_TEST_VADD_VX(32, 4, -1)
DEFINE_TEST_VADD_VX(32, 8, 2)

}  // namespace
}  // namespace vadd_vx_test