[clang] [llvm] [HIP] Fix ubsan function checks applied to kernel functions (PR #188872)

[Matt Arsenault via cfe-commits]

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@@ -323,6 +323,7 @@ constexpr bool isCallableCC(CallingConv::ID CC) {
   case CallingConv::AMDGPU_PS:
   case CallingConv::AMDGPU_VS:
   case CallingConv::SPIR_KERNEL:
+  case CallingConv::PTX_Kernel:
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arsenm wrote:

This is a separate change (which should also get a new verifier test). I'm also surprised this is broken because ptx_kernel was specifically introduced not that long ago to disallow calls 

https://github.com/llvm/llvm-project/pull/188872