[Bug target/62011] False Data Dependency in popcnt instruction

andrew.n.senkevich at gmail dot com gcc-bugzilla@gcc.gnu.org
Thu Nov 16 19:32:00 GMT 2017


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=62011

Andrew Senkevich <andrew.n.senkevich at gmail dot com> changed:

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--- Comment #17 from Andrew Senkevich <andrew.n.senkevich at gmail dot com> ---
(In reply to Travis Downs from comment #16)
> Also, this is fixed for Skylake for tzcnt and lzcnt but not popcnt.

How to confirm it? As I see it is fixed for popcnt. Could you show some
reproducer?


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