Add alignment checks to OpenCL and Level Zero plug-ins.

Author: bader

sycl/plugins/level_zero/pi_level_zero.cpp

@@ -4674,6 +4674,8 @@ pi_result piextUSMHostAlloc(void **ResultPtr, pi_context Context,
   ZE_CALL(
       zeMemAllocHost(Context->ZeContext, &ZeDesc, Size, Alignment, ResultPtr));
 
+  assert(alignment == 0 ||
+         reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0);
   return PI_SUCCESS;
 }
 
@@ -4700,6 +4702,8 @@ pi_result USMDeviceAllocImpl(void **ResultPtr, pi_context Context,
   ZE_CALL(zeMemAllocDevice(Context->ZeContext, &ZeDesc, Size, Alignment,
                            Device->ZeDevice, ResultPtr));
 
+  assert(alignment == 0 ||
+         reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0);
   return PI_SUCCESS;
 }
 
@@ -4721,6 +4725,8 @@ pi_result USMSharedAllocImpl(void **ResultPtr, pi_context Context,
   ZE_CALL(zeMemAllocShared(Context->ZeContext, &ZeDevDesc, &ZeHostDesc, Size,
                            Alignment, Device->ZeDevice, ResultPtr));
 
+  assert(alignment == 0 ||
+         reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0);
   return PI_SUCCESS;
 }
 

sycl/plugins/opencl/pi_opencl.cpp

@@ -713,6 +713,9 @@ pi_result piextUSMHostAlloc(void **result_ptr, pi_context context,
 
   *result_ptr = Ptr;
 
+  assert(alignment == 0 ||
+         (RetVal == PI_SUCCESS &&
+          reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0));
   return RetVal;
 }
 
@@ -746,6 +749,9 @@ pi_result piextUSMDeviceAlloc(void **result_ptr, pi_context context,
 
   *result_ptr = Ptr;
 
+  assert(alignment == 0 ||
+         (RetVal == PI_SUCCESS &&
+          reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0));
   return RetVal;
 }
 
@@ -779,6 +785,9 @@ pi_result piextUSMSharedAlloc(void **result_ptr, pi_context context,
 
   *result_ptr = Ptr;
 
+  assert(alignment == 0 ||
+         (RetVal == PI_SUCCESS &&
+          reinterpret_cast<std::uintptr_t>(*result_ptr) % alignment == 0));
   return RetVal;
 }