[Bug middle-end/106805] [13 Regression] Undue optimisation of floating-point comparisons

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106805

--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Note phiopt turns some control-flow into straight-line code which is then also
susceptible to code motion across the foo() calls, even if that's not what
currently happens.  So even preserving those stmts will still have them
un-ordered with respect to the inspection of the FP exception state,
that is, -frounding-math is known to be buggy.