message: Avoid module import in a textual header, NFC
  This unbreaks the lldb modules build (-DLLVM_ENABLE_MODULES=On).
diff: //
  //===----------------------------------------------------------------------===//
  -#include "llvm/Support/Compiler.h"
  -#include <cstddef>
  -#include <cstdint>
  -
  -// Project includes
  +// This file is meant to be textually included. Do not #include modular
  +// headers here.
  // Computes the offset of the given GPR in the user data area.
  #define GPR_OFFSET(regname) (LLVM_EXTENSION offsetof(GPR, regname))
  