added threadfence feature for hcc

1. Added feature for __threadfence and __threadfence_block
2. Added feature for using LLVM IR files directly while compilation
3. Added test for threadfence and threadfence_block

Change-Id: Ib7e5d89b4cca1a135952b317e5809cd05b56a3c9

tests/src/deviceLib/hipThreadFence.cpp

@@ -0,0 +1,69 @@
+/*
+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.
+*/
+
+#include<iostream>
+#include<hip/hip_runtime_api.h>
+#include<hip/hip_runtime.h>
+
+#define NUM 1024
+#define SIZE NUM*sizeof(float)
+
+__global__ void vAdd(hipLaunchParm lp, float *In1, float *In2, float *In3, float *In4, float *Out)
+{
+    int tid = hipThreadIdx_x + hipBlockIdx_x * hipBlockDim_x;
+    In4[tid] = In1[tid] + In2[tid];
+    __threadfence();
+    In3[tid] = In3[tid] + In4[tid];
+    __threadfence_block();
+    Out[tid] = In4[tid] + In3[tid];
+
+}
+
+int main(){
+    float *In1 = new float[1024];
+    float *In2 = new float[1024];
+    float *In3 = new float[1024];
+    float *In4 = new float[1024];
+    float *Out = new float[1024];
+
+    for(uint32_t i=0;i<1024;i++)
+    {
+        In1[i] = 1.0f;
+        In2[i] = 1.0f;
+        In3[i] = 1.0f;
+        In4[i] = 1.0f;
+    }
+
+    float *In1d, *In2d, *In3d, *In4d, *Outd;
+    hipMalloc((void**)&In1d, SIZE);
+    hipMalloc((void**)&In2d, SIZE);
+    hipMalloc((void**)&In3d, SIZE);
+    hipMalloc((void**)&In4d, SIZE);
+    hipMalloc((void**)&Outd, SIZE);
+
+    hipMemcpy(In1d, In1, SIZE, hipMemcpyHostToDevice);
+    hipMemcpy(In2d, In2, SIZE, hipMemcpyHostToDevice);
+    hipMemcpy(In3d, In3, SIZE, hipMemcpyHostToDevice);
+    hipMemcpy(In4d, In4, SIZE, hipMemcpyHostToDevice);
+
+    hipLaunchKernel(vAdd, dim3(32,1,1), dim3(32,1,1), 0, 0, In1d, In2d, In3d, In4d, Outd);
+    hipMemcpy(Out, Outd, SIZE, hipMemcpyDeviceToHost);
+    assert(Out[10] == 2*In1[10] + 2*In2[10] + In3[10]);
+
+}