[Bug target/101053] Incorrect code at -O1 on arm64

[gilles.gouaillardet at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101053

--- Comment #7 from Gilles Gouaillardet <gilles.gouaillardet at gmail dot com> ---
Note you have to 'make clean' before re-running 'make ...' with different
options.
Otherwise, pretty much nothing gets rebuilt.