https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114963
Bug ID: 114963
Summary: RISCV -msave-restore -fno-omit-frame-pointer does not
emit save/restore library calls
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: craig.topper at gmail dot com
Target Milestone: ---
It appears that combining -msave-restore and -fno-omit-frame-pointer results in
no save/restore library calls being emitted.
I also found this blog post that seems to imply it worked at some point, but
broke unwinding.
https://www.codethink.co.uk/articles/2023/riscv-stack-unwinding-bug/ I checked
a few previous versions on compiler explorer and was not able to get the
library calls.
