[SM6.10] Add Smoke Test For VectorAccumulate (#8458)

Adds a smoke test for the VectorAccumulate operation added for the
preview followup

---------

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: V-FEXrt

tools/clang/unittests/HLSLExec/LinAlgTests.cpp

@@ -359,6 +359,9 @@ class DxilConf_SM610_LinAlg {
   // Convert
   TEST_METHOD(Convert);
 
+  // Vector Accumulate
+  TEST_METHOD(VectorAccumulateDescriptor_Thread_F16);
+
 private:
   CComPtr<ID3D12Device> D3DDevice;
   dxc::SpecificDllLoader DxcSupport;
@@ -1693,7 +1696,7 @@ static const char ConvertShader[] = R"(
 
 static void runConvert(ID3D12Device *Device, dxc::SpecificDllLoader &DxcSupport,
                        bool Verbose) {
-  std::string Args = "-HV 202x";
+  std::string Args = "-HV 202x -enable-16bit-types";
   MatrixDim NumElements = 4;
   size_t BufferSize = elementSize(ComponentType::F32) * NumElements;
 
@@ -1718,4 +1721,44 @@ void DxilConf_SM610_LinAlg::Convert() {
   runConvert(D3DDevice, DxcSupport, VerboseLogging);
 }
 
+static const char VectorAccumulateDescriptorShader[] = R"(
+  RWByteAddressBuffer Output : register(u0);
+
+  [numthreads(1, 1, 1)]
+  void main() {
+    vector<half, 4> InVec = {1.0, 2.0, 3.0, 4.0};
+    __builtin_LinAlg_VectorAccumulateToDescriptor(InVec, Output, 0, 64);
+  }
+)";
+
+static void runVectorAccumulateDescriptor(ID3D12Device *Device,
+                                          dxc::SpecificDllLoader &DxcSupport,
+                                          bool Verbose) {
+  std::string Args = "-HV 202x -enable-16bit-types";
+  MatrixDim NumElements = 4;
+  size_t BufferSize = elementSize(ComponentType::F16) * NumElements;
+
+  compileShader(DxcSupport, VectorAccumulateDescriptorShader, "cs_6_10", Args,
+                Verbose);
+
+  auto Expected = makeExpectedVec(ComponentType::F16, NumElements, 1.0);
+
+  auto Op = createComputeOp(VectorAccumulateDescriptorShader, "cs_6_10",
+                            "UAV(u0)", Args.c_str());
+  addUAVBuffer(Op.get(), "Output", BufferSize, true);
+  addRootView(Op.get(), 0, "Output");
+
+  auto Result = runShaderOp(Device, DxcSupport, std::move(Op));
+
+  MappedData OutData;
+  Result->Test->GetReadBackData("Output", &OutData);
+
+  VERIFY_IS_TRUE(verifyComponentBuffer(ComponentType::F16, OutData.data(),
+                                       Expected, NumElements, Verbose));
+}
+
+void DxilConf_SM610_LinAlg::VectorAccumulateDescriptor_Thread_F16() {
+  runVectorAccumulateDescriptor(D3DDevice, DxcSupport, VerboseLogging);
+}
+
 } // namespace LinAlg