https://gcc.gnu.org/bugzilla/show_bug.cgi?id=33675
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
As said, we try to honor volatile automatic variables as such and they get a
stack slot assigned for this reason. Without the volatile but with
-frounding-math -O2 we get
fldl 20(%esp)
movl 16(%esp), %eax
fchs
fstps 4(%esp)
flds 4(%esp)
fchs
fstps (%eax)
which is what you expect. Fixed (or wontfix with the volatile).
