[Bug rtl-optimization/82454] Possible future performance regression in x86 for 64-bit constant expansions
rguenth at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Oct 9 11:54:00 GMT 2017
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82454
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-10-09
Ever confirmed|0 |1
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
__INT64_TYPE__ f1 (__INT64_TYPE__ i)
{
return (((__INT64_TYPE__)1) << 63) >> i;
}
is already an existing missed optimization.
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