https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78397
--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> --- The __aeabi_read_tp call is to a special helper function and not really considered to be a 'public interface'; the EABI only requires conformance to the stack alignment constraints at public interfaces. As such, I think that really this is a bug in the clang helper libraries and that they shouldn't be making such an assumption. The proposed patch is undesirable as it would extra stack activity in genuine leaf functions as well as in this case and that makes the code less efficient.
