[Bug lto/83201] [7/8 Regression] SPEC CPU2017 505.mcf_r produces incorrect output when built with -flto and FDO

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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83201

john henning <mailboxnotfound at yahoo dot com> changed:

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--- Comment #21 from john henning <mailboxnotfound at yahoo dot com> ---
Comments from SPEC CPU Documentation Guy:

As described at 
https://www.spec.org/cpu2017/Docs/faq.html#Miscompare.07
https://www.spec.org/cpu2017/Docs/benchmarks/505.mcf_r.html#Portability
SPEC's recommendation is to use
   -fno-strict-aliasing

The patch attached to this bug is not approved by SPEC.

SPEC generally does not change benchmarks after release (no moving targets);
more detail is at the above links.

   John Henning
   SPEC CPU Subcommittee Secretary