[SYCL] Fix memory deallocation size, fix 2 CTS test fails on Windows

Signed-off-by: Vyacheslav N Klochkov <vyacheslav.n.klochkov@intel.com>

Author: v-klochkov

sycl/include/CL/sycl/detail/sycl_mem_obj_t.hpp

@@ -101,6 +101,11 @@ template <typename AllocatorT> class SYCLMemObjT : public SYCLMemObjI {
   }
 
   size_t get_size() const { return MSizeInBytes; }
+  size_t get_count() const {
+    auto constexpr AllocatorValueSize =
+        sizeof(allocator_value_type_t<AllocatorT>);
+    return (get_size() + AllocatorValueSize - 1) / AllocatorValueSize;
+  }
 
   template <typename propertyT> bool has_property() const {
     return MProps.has_property<propertyT>();
@@ -112,16 +117,11 @@ template <typename AllocatorT> class SYCLMemObjT : public SYCLMemObjI {
 
   AllocatorT get_allocator() const { return MAllocator; }
 
-  void *allocateHostMem() override {
-    size_t AllocatorValueSize = sizeof(allocator_value_type_t<AllocatorT>);
-    size_t AllocationSize = get_size() / AllocatorValueSize;
-    AllocationSize += (get_size() % AllocatorValueSize) ? 1 : 0;
-    return MAllocator.allocate(AllocationSize);
-  }
+  void *allocateHostMem() override { return MAllocator.allocate(get_count()); }
 
   void releaseHostMem(void *Ptr) override {
     if (Ptr)
-      MAllocator.deallocate(allocator_pointer_t<AllocatorT>(Ptr), get_size());
+      MAllocator.deallocate(allocator_pointer_t<AllocatorT>(Ptr), get_count());
   }
 
   void releaseMem(ContextImplPtr Context, void *MemAllocation) override {

sycl/test/basic_tests/buffer/buffer.cpp

@@ -643,6 +643,13 @@ int main() {
     b.set_final_data(voidPtr);
   }
 
+  {
+    std::allocator<float8> buf_alloc;
+    cl::sycl::shared_ptr_class<float8> data(new float8[8]);
+    cl::sycl::buffer<float8, 1, std::allocator<float8>>
+        b(data, cl::sycl::range<1>(8), buf_alloc);
+  }
+
   // TODO tests with mutex property
   return failed;
 }