[SYCL] Fix vec<T, 3> the underlying type.

Signed-off-by: Alexey Voronov <alexey.voronov@intel.com>

Author: alexeyvoronov-intel

sycl/include/CL/sycl/detail/boolean.hpp

@@ -43,18 +43,17 @@ template <> struct Assigner<0> {
   }
 };
 
-template <int N> struct alignas(VectorAlignment<bool, N>::value) Boolean {
+template <int N> struct Boolean {
   static_assert(((N == 2) || (N == 3) || (N == 4) || (N == 8) || (N == 16)),
                 "Invalid size");
 
   using element_type = bool;
 
 #ifdef __SYCL_DEVICE_ONLY__
-  using DataType =
-      element_type __attribute__((ext_vector_type(VectorLength<N>::value)));
+  using DataType = element_type __attribute__((ext_vector_type(N)));
   using vector_t = DataType;
 #else
-  using DataType = element_type[VectorLength<N>::value];
+  using DataType = element_type[N];
 #endif
 
   Boolean() : value{false} {}
@@ -100,10 +99,10 @@ template <int N> struct alignas(VectorAlignment<bool, N>::value) Boolean {
 
 private:
   template <int Num> friend struct Assigner;
-  DataType value;
+  alignas(VectorAlignment<bool, N>::value) DataType value;
 };
 
-template <> struct alignas(1) Boolean<1> {
+template <> struct Boolean<1> {
 
   using element_type = bool;
 
@@ -136,7 +135,7 @@ template <> struct alignas(1) Boolean<1> {
   }
 
 private:
-  DataType value;
+  alignas(1) DataType value;
 };
 
 } // namespace detail

sycl/include/CL/sycl/types.hpp

@@ -317,13 +317,32 @@ template <typename T, int N> struct VectorAlignment {
 
 } // namespace detail
 
+#if defined(_WIN32) && (_MSC_VER)
+// MSVC Compiler doesn't allow using of function arguments with alignment
+// requirements. MSVC Compiler Error C2719: 'parameter': formal parameter with
+// __declspec(align('#')) won't be aligned. The align __declspec modifier
+// is not permitted on function parameters. Function parameter alignment
+// is controlled by the calling convention used.
+// For more information, see Calling Conventions
+// (https://docs.microsoft.com/en-us/cpp/cpp/calling-conventions).
+// For information on calling conventions for x64 processors, see
+// Calling Convention
+// (https://docs.microsoft.com/en-us/cpp/build/x64-calling-convention).
+#pragma message ("Alignment of class vec is not in accordance with SYCL \
+specification requirements, a limitation of the MSVC compiler(Error C2719).\
+Applied default alignment.")
+#define SYCL_ALIGNAS(x)
+#else
+#define SYCL_ALIGNAS(N) alignas(N)
+#endif
+
 template <typename Type, int NumElements> class vec {
   using DataT = Type;
 
   // This represent type of underlying value. There should be only one field
   // in the class, so vec<float, 16> should be equal to float16 in memory.
-  using DataType = typename detail::BaseCLTypeConverter<
-      DataT, detail::VectorLength<NumElements>::value>::DataType;
+  using DataType =
+      typename detail::BaseCLTypeConverter<DataT, NumElements>::DataType;
 
   template <bool B, class T, class F>
   using conditional_t = typename std::conditional<B, T, F>::type;
@@ -1023,7 +1042,12 @@ template <typename Type, int NumElements> class vec {
   }
 
   // fields
-  DataType m_Data;
+  // Used "SYCL_ALIGNAS" instead "alignas" to handle MSVC compiler.
+  // For MSVC compiler max alignment is 64, e.g. vec<double, 16> required
+  // alignment of 128 and MSVC compiler cann't align a parameter with requested
+  // alignment of 128.
+  SYCL_ALIGNAS((detail::VectorAlignment<DataT, NumElements>::value))
+      DataType m_Data;
 
   // friends
   template <typename T1, typename T2, typename T3, template <typename> class T4,
@@ -1801,15 +1825,14 @@ using cl_schar16 = cl_char16;
 // As a result half values will be converted to the integer and passed as a
 // kernel argument which is expected to be floating point number.
 #ifndef __SYCL_DEVICE_ONLY__
-template <int NumElements>
-struct alignas(
-    cl::sycl::detail::VectorAlignment<half, NumElements>::value) half_vec {
-  std::array<half, cl::sycl::detail::VectorLength<NumElements>::value> s;
+template <int NumElements> struct half_vec {
+  alignas(cl::sycl::detail::VectorAlignment<half, NumElements>::value)
+      std::array<half, NumElements> s;
 };
 
 using __half_t = half;
 using __half2_vec_t = half_vec<2>;
-using __half3_vec_t = half_vec<4>;
+using __half3_vec_t = half_vec<3>;
 using __half4_vec_t = half_vec<4>;
 using __half8_vec_t = half_vec<8>;
 using __half16_vec_t = half_vec<16>;
@@ -2062,3 +2085,5 @@ DECLARE_SYCL_FLOAT_VEC(double)
 
 } // namespace sycl
 } // namespace cl
+
+#undef SYCL_ALIGNAS

sycl/test/basic_tests/swizzle_op.cpp

@@ -256,4 +256,46 @@ int main() {
     assert(results[2] == 257);
     assert(results[3] == 258);
   }
+
+  {
+    int FF[8] = {1, 1, 1, 0, 1, 1, 1, 0};
+    {
+      buffer<cl::sycl::int3, 1> b((cl::sycl::int3 *)FF, range<1>(2));
+      queue myQueue;
+      myQueue.submit([&](handler &cgh) {
+        auto B = b.get_access<access::mode::read_write>(cgh);
+        cgh.parallel_for<class test_10>(
+            cl::sycl::range<1>{2},
+            [=](cl::sycl::id<1> ID) { B[ID] = cl::sycl::int3{ID[0]} / B[ID]; });
+      });
+    }
+    assert(FF[0] == 0);
+    assert(FF[1] == 0);
+    assert(FF[2] == 0);
+    assert(FF[4] == 1);
+    assert(FF[5] == 1);
+    assert(FF[6] == 1);
+  }
+  {
+    cl::sycl::int3 result = {0, 0, 0};
+    {
+      buffer<cl::sycl::int3, 1> b(&result, range<1>(1));
+      queue myQueue;
+      myQueue.submit([&](handler &cgh) {
+        auto B = b.get_access<access::mode::write>(cgh);
+        cgh.single_task<class test_11>([=]() {
+          cl::sycl::int3 testVec1 = {2, 2, 2};
+          cl::sycl::int3 testVec2 = {1, 1, 1};
+          B[0] = testVec1 / testVec2;
+        });
+      });
+    }
+    const int r1 = result.x();
+    const int r2 = result.y();
+    const int r3 = result.z();
+    assert(r1 == 2);
+    assert(r2 == 2);
+    assert(r3 == 2);
+  }
+  return 0;
 }