[Bug target/123655] [16 regression] glibc test stdlib/tst-makecontext FAILs for x32 with -O3 -march=znver2

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123655

--- Comment #3 from H.J. Lu <hjl.tools at gmail dot com> ---
r16-6697-g5ac3a14842e7bb works.