[Bug c/92164] Wrong result using builtin rint/rintf optimization in x86_64

[steffen-schmidt at siemens dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92164

--- Comment #3 from Steffen Schmidt <steffen-schmidt at siemens dot com> ---
Thanks for the quick reply.

Just tested using -frounding-math and it seems to fix the issue. 
Sorry, I was not aware of this option, according to GCCs manual it is
experimental.

Please correct me if I'm wrong, but my expectation would be, assuming a correct
program, switching from -O0 to -O1 should not influence the runtime result.