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[Bug target/81759] Improve data tracking for _pext_u64 and __builtin_ffsll
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 08 Aug 2017 07:22:16 +0000
- Subject: [Bug target/81759] Improve data tracking for _pext_u64 and __builtin_ffsll
- Auto-submitted: auto-generated
- References: <bug-81759-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81759
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2017-08-08
Ever confirmed|0 |1
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
extern __inline unsigned long long
__attribute__((__gnu_inline__, __always_inline__, __artificial__))
_pext_u64 (unsigned long long __X, unsigned long long __Y)
{
return __builtin_ia32_pext_di (__X, __Y);
}
so it's transparent to the optimizers and thus a target or RTL optimization
issue issue.