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[Bug rtl-optimization/70873] [7 Regressio] 20% performance regression at 482.sphinx3 after r235442 with -O2 -m32 on Haswell.
- From: "ubizjak at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Tue, 03 May 2016 13:03:02 +0000
- Subject: [Bug rtl-optimization/70873] [7 Regressio] 20% performance regression at 482.sphinx3 after r235442 with -O2 -m32 on Haswell.
- Auto-submitted: auto-generated
- References: <bug-70873-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70873
--- Comment #13 from UroÅ Bizjak <ubizjak at gmail dot com> ---
(In reply to H.J. Lu from comment #12)
> I still see:
>
> vcvtss2sd (%ecx,%eax,4), %xmm5, %xmm5
>
> without vxorpd.
Maybe vxorpd gets scheduled away from the insn? What is the name of the
pattern?