https://gcc.gnu.org/bugzilla/show_bug.cgi?id=77359
--- Comment #15 from David Edelsohn <dje at gcc dot gnu.org> --- The AIX Subroutine Linkage Convention states: "The address value in the stack pointer must be quadword-aligned. (The address value must be a multiple of 16.)" - Stack Layout, Note 2. https://www.ibm.com/support/knowledgecenter/en/ssw_aix_53/com.ibm.aix.aixassem/doc/alangref/linkage_convent.htm http://www.ibm.com/support/knowledgecenter/ssw_aix_72/com.ibm.aix.alangref/idalangref_stack_layout.htm I believe that requires the change that I proposed to STACK_DYNAMIC_OFFSET in comment #10. I will push that patch. I'm not sure how this should be addressed for the SVR4 ELF ABI when Altivec is not enabled.
