[Bug tree-optimization/123207] [16 Regression] Miscompare of 526.blender_r with -O3 on x86_64

[sjames at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123207

--- Comment #4 from Sam James <sjames at gcc dot gnu.org> ---
(In reply to Filip Kastl from comment #3)
> (Ah right.  That's equivalent to using -O3 instead of -Ofast.)

It isn't, e.g. -fno-semantic-interposition, not that it should matter here.