AtomicAdd_Coherent_withunsafeflag.cc

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 */
/*
AtomicAdd on FineGrainMemory
1. The following test scenario verifies
atomicAdd on fineGrain memory with -munsafe-fp-atomics flag
This testcase works only on gfx90a, gfx940, gfx941, gfx942.
*/

#include<hip_test_checkers.hh>
#include<hip_test_common.hh>
#include<hip_test_features.hh>

#define INC_VAL 10
#define INITIAL_VAL 5
template<typename T>
static __global__ void AtomicCheck(T* Ad, T* result) {
  T inc_val = 10;
  *result = atomicAdd(Ad, inc_val);
}


/*atomicAdd API for the fine grained memory variable
  with -m-unsafe-atomics flag
Input: Ad{5}, INC_VAL{10}
Output: atomicAdd API would return 0 and the 0/P is 5
        Generate the assembly file and check whether
        global_atomic_cmpswap instruction is generated
        or not */

TEMPLATE_TEST_CASE("Unit_AtomicAdd_CoherentwithUnsafeflag", "",
                   float, double) {
  hipDeviceProp_t prop;
  int device;
  HIP_CHECK(hipGetDevice(&device));
  HIP_CHECK(hipGetDeviceProperties(&prop, device));
  std::string gfxName(prop.gcnArchName);
  if (CheckIfFeatSupported(CTFeatures::CT_FEATURE_FINEGRAIN_HWSUPPORT, gfxName)) {
    if (prop.canMapHostMemory != 1) {
      SUCCEED("Does not support HostPinned Memory");
    } else {
      TestType *A_h{nullptr}, *result{nullptr};
      TestType *A_d{nullptr}, *result_d{nullptr};
      HIP_CHECK(hipHostMalloc(reinterpret_cast<void**>(&A_h), sizeof(TestType),
                              hipHostMallocCoherent));
      A_h[0] = INITIAL_VAL;
      HIP_CHECK(hipHostMalloc(reinterpret_cast<void**>(&result),
                              sizeof(TestType),
                              hipHostMallocCoherent));
      result[0] = INITIAL_VAL;
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&A_d),
                                        A_h, 0));
      HIP_CHECK(hipHostGetDevicePointer(reinterpret_cast<void**>(&result_d),
                                        result, 0));
      hipLaunchKernelGGL(AtomicCheck<TestType>, dim3(1), dim3(1),
                         0, 0, A_d,
                         result_d);
      HIP_CHECK(hipGetLastError()); 
      HIP_CHECK(hipDeviceSynchronize());
        bool testResult;

      if ((std::is_same<TestType, float>::value)) {
        testResult = HipTest::assemblyFile_Verification<TestType>(
                     "AtomicAdd_Coherent_withunsafeflag-hip-amdgcn(.*)\\.s",
                     "global_atomic_add_f32");
        REQUIRE(testResult == true);
      } else {
        testResult = HipTest::assemblyFile_Verification<TestType>(
                     "AtomicAdd_Coherent_withunsafeflag-hip-amdgcn(.*)\\.s",
                     "global_atomic_add_f64");
        REQUIRE(testResult == true);
      }

      REQUIRE(A_h[0] == INITIAL_VAL);
      REQUIRE(result[0] == 0);
      HIP_CHECK(hipHostFree(A_h));
      HIP_CHECK(hipHostFree(result));
    }
  } else {
    SUCCEED("Memory model feature is only supported for gfx90a, gfx940, gfx941, gfx942, Hence"
             "skipping the testcase for this GPU " << device);
  }
}