https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99685
--- Comment #5 from CVS Commits <cvs-commit at gcc dot gnu.org> --- The releases/gcc-10 branch has been updated by Pat Haugen <pthau...@gcc.gnu.org>: https://gcc.gnu.org/g:7af52b39059b4496b17337d0efc7575f17febb26 commit r10-11043-g7af52b39059b4496b17337d0efc7575f17febb26 Author: Pat Haugen <pthau...@linux.ibm.com> Date: Mon Oct 17 14:53:11 2022 -0500 Fix register count when not splitting Complex IEEE 128-bit args. For ABI_V4, we do not split complex args. This created a problem because even though an arg would be passed in two VSX regs, we were only advancing the function arg counter by one VSX register. Fixed with this patch. (backported commit 2ee68beee709e48fce85b8892ff9985acc6a91a8) gcc/ PR target/99685 * config/rs6000/rs6000-call.c (rs6000_function_arg_advance_1): Bump register count when not splitting IEEE 128-bit Complex.