[clang][SYCL] Fix field/base builtins for PCH support

[Fznamznon]

We have added several builtins for device copyability checking a while back. These are implemented via new AST nodes, so they require implementation of ASTReaderStmt's and ASTWriterStmt's methods. The implementation was in place but it was untested so we never saw that it is missing writing/reading of the builtin expression's type which resulted in crashes during PCH reading.

[Fznamznon]

Failed tests on PVC

Failed Tests (8):
  SYCL :: Adapters/level_zero/event-leak.cpp
  SYCL :: Adapters/level_zero/imm_cmdlist.cpp
  SYCL :: Adapters/level_zero/interop-thread.cpp
  SYCL :: Adapters/level_zero/interop.cpp
  SYCL :: Adapters/level_zero/interop_memcpy.cpp
  SYCL :: Adapters/level_zero/track_indirect_access_memory.cpp
  SYCL :: DeviceImageBackendContent/L0_interop_test.cpp
  SYCL :: Regression/barrier_waitlist_with_interop_event.cpp

are unrelated. The change can only break something for all devices and I'm pretty sure we don't have PCH related tests anywhere.

[aelovikov-intel]

I'm pretty sure we don't have PCH related tests anywhere

Can you please update

llvm/sycl/test-e2e/PerformanceTests/KernelCompiler/auto-pch.cpp

Lines 97 to 105 in 0f39e01

	run({});
	run({"sycl/half_type.hpp"});
	run({"sycl/ext/oneapi/bfloat16.hpp"});
	run({"sycl/marray.hpp"});
	run({"sycl/vector.hpp"});
	run({"sycl/multi_ptr.hpp"});
	run({"sycl/builtins.hpp"});
	run({"sycl/ext/oneapi/matrix/matrix.hpp"});
	}

to include

run({"sycl/sycl.hpp"}); 

at the very end.

[aelovikov-intel]

Can you please update

I forgot to mention that this test requires a label to run in pre-commit CI. I've added it and closed/re-opened the PR to re-trigger pre-commit CI.

[github-actions]

@intel/llvm-gatekeepers please consider merging