P4 to Git Change 1343852 by lmoriche@lmoriche_opencl_dev on 2016/11/21 00:55:02

SWDEV-106175 - [ROCm CQE][OCL][G] clGetKernelInfoAMD() returns 0 vgprs ("OCLOfflineCompilation" failed with compute-roc-master#1542)
	- Disable ROCm offline devices
	- Add roc::Device::loaderQueryHostAdress to retrieve the host address of a give kernel code handle.
	- Extract usedSGPRs and usedVGPRs for the amd kernel code header.

Affected files ...

... //depot/stg/opencl/drivers/opencl/api/opencl/amdocl/cl_icd.cpp#26 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/rocm/rocdevice.cpp#27 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/rocm/rocdevice.hpp#9 edit
... //depot/stg/opencl/drivers/opencl/runtime/device/rocm/rockernel.cpp#17 edit


[ROCm/clr commit: 9fbdf64025]

projects/clr/rocclr/runtime/device/rocm/rockernel.cpp

@@ -754,9 +754,20 @@ bool Kernel::init_LC()
 
     workGroupInfo_.preferredSizeMultiple_ = wavefront_size;
 
-    workGroupInfo_.usedSGPRs_ = 0;
+    const void* kernelHostPtr = nullptr;
+    if (Device::loaderQueryHostAddress(
+            reinterpret_cast<const void*>(kernelCodeHandle_), &kernelHostPtr
+            ) == HSA_STATUS_SUCCESS) {
+        auto akc = reinterpret_cast<const amd_kernel_code_t*>(kernelHostPtr);
+        workGroupInfo_.usedSGPRs_ = akc->wavefront_sgpr_count;
+        workGroupInfo_.usedVGPRs_ = akc->workitem_vgpr_count;
+    }
+    else {
+        workGroupInfo_.usedSGPRs_ = 0;
+        workGroupInfo_.usedVGPRs_ = 0;
+    }
+
     workGroupInfo_.usedStackSize_ = 0;
-    workGroupInfo_.usedVGPRs_ = 0;
 
     workGroupInfo_.wavefrontPerSIMD_ =
         program_->dev().info().maxWorkItemSizes_[0] / wavefront_size;