Refactor directed test infrastructue.

- Add hierarchy.  Tests now live in directories, each with its own
  CMakeFiles.txt.  Reduces merge conflicts.
- Change make_hip_executable -> build_hip_executable.
- Refresh docs.
- Enable some tests that were previously built but not run.

Change-Id: I8c5de3c954400bf233904282b8b42861a2b7c536

tests/src/kernel/hipGridLaunch.cpp

@@ -0,0 +1,94 @@
+/*
+Copyright (c) 2015-2016 Advanced Micro Devices, Inc. All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+// Test the Grid_Launch syntax.
+
+#undef DISABLE_GRID_LAUNCH /* Tell hip_*.h to compile in GL mode */
+#include "hip_runtime.h"
+#include "test_common.h"
+
+
+
+// __device__ maps to __attribute__((hc))
+__device__ int foo(int i) 
+{
+    return i+1;
+}
+
+//---
+//Syntax we would like to support with GRID_LAUNCH enabled:
+template <typename T>
+__global__ void
+vectorADD2( hipLaunchParm lp,
+            T *A_d,
+            T *B_d,
+            T *C_d,
+            size_t N)
+{
+    size_t offset = (hipBlockIdx_x * hipBlockDim_x + hipThreadIdx_x);
+    size_t stride = hipBlockDim_x * hipGridDim_x ;
+
+    for (size_t i=offset; i<N; i+=stride) {
+        C_d[i] = A_d[i] + B_d[i] ;
+    }
+}
+
+int test_gl2(size_t N) {
+
+    size_t Nbytes = N*sizeof(int);
+
+    int *A_d, *B_d, *C_d;
+    int *A_h, *B_h, *C_h;
+
+    HipTest::initArrays (&A_d, &B_d, &C_d, &A_h, &B_h, &C_h, N);
+
+
+
+    unsigned blocks = HipTest::setNumBlocks(blocksPerCU, threadsPerBlock, N);
+
+
+    // Full vadd in one large chunk, to get things started:
+    HIPCHECK ( hipMemcpy(A_d, A_h, Nbytes, hipMemcpyHostToDevice));
+    HIPCHECK ( hipMemcpy(B_d, B_h, Nbytes, hipMemcpyHostToDevice));
+
+    hipLaunchKernel(vectorADD2, dim3(blocks), dim3(threadsPerBlock), 0, 0, A_d, B_d, C_d, N);
+
+    HIPCHECK ( hipMemcpy(C_h, C_d, Nbytes, hipMemcpyDeviceToHost));
+
+    HIPCHECK (hipDeviceSynchronize());
+
+    HipTest::checkVectorADD(A_h, B_h, C_h, N);
+
+    return 0;
+
+}
+
+
+int main(int argc, char *argv[])
+{
+    HipTest::parseStandardArguments(argc, argv, true);
+
+    test_gl2(N);
+
+
+    passed();
+}
+