================
@@ -350,7 +351,15 @@ Address 
CGNVCUDARuntime::prepareKernelArgsLLVMOffload(CodeGenFunction &CGF,
       KernelLaunchParamsTy, CharUnits::fromQuantity(16),
       "kernel_launch_params");
 
-  auto KernelArgsSize = CGM.getDataLayout().getTypeAllocSize(KernelArgsTy);
+  // Avoid accounting the tail padding for the kernel arguments.
+  auto KernelArgsSize = llvm::TypeSize::getZero();
----------------
kevinsala wrote:

Probably the title of the PR should be more generic. I don't think this issue 
is only affecting LLVM offloading. It could potentially affect any kernel in 
OpenMP offloading with parameters that have different alignments.

https://github.com/llvm/llvm-project/pull/156229
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