Revert "Revert adoption of CUDA indexing in general - this can only work with later versions of the compiler, just like module based dispatch, and thus must be guarded against usage in earlier (e.g. 1.6) versions."

This reverts commit d2fd1f5

tests/src/runtimeApi/memory/p2p_copy_coherency.cpp

@@ -63,8 +63,8 @@ int enablePeers(int dev0, int dev1)
 __global__ void
 memsetIntKernel(int * ptr, const int val, size_t numElements)
 {
-    int gid = (blockIdx.x * blockDim.x + threadIdx.x);
-    int stride = blockDim.x * gridDim.x ;
+    int gid = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
+    int stride = hipBlockDim_x * hipGridDim_x ;
     for (size_t i= gid; i< numElements; i+=stride){
        ptr[i] = val;
     }
@@ -73,8 +73,8 @@ memsetIntKernel(int * ptr, const int val, size_t numElements)
 __global__ void
 memcpyIntKernel(const int * src, int* dst, size_t numElements)
 {
-    int gid = (blockIdx.x * blockDim.x + threadIdx.x);
-    int stride = blockDim.x * gridDim.x ;
+    int gid = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
+    int stride = hipBlockDim_x * hipGridDim_x ;
     for (size_t i= gid; i< numElements; i+=stride){
        dst[i] = src[i];
     }