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[Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with -mprefer-vector-width=256 or 512 on Zen
- From: "jamborm at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Fri, 11 May 2018 15:42:20 +0000
- Subject: [Bug target/84201] 549.fotonik3d_r from SPEC2017 fails verification with -mprefer-vector-width=256 or 512 on Zen
- Auto-submitted: auto-generated
- References: <bug-84201-4@http.gcc.gnu.org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84201
--- Comment #1 from Martin Jambor <jamborm at gcc dot gnu.org> ---
When benchmarking GCC 8 on an older Ivy Bridge Xeon, I also got 549.fotonik3d_r
verification error just with -Ofast -g -march=native -mtune=native