[Bug target/84331] New: Execution failures on Skylake server with -march=native

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84331

            Bug ID: 84331
           Summary: Execution failures on Skylake server with
                    -march=native
           Product: gcc
           Version: 8.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: target
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hjl.tools at gmail dot com
  Target Milestone: ---
            Target: x86-64

On Skylake server with -march=native, r257581 gave

FAIL: gcc.target/i386/pr80969-4a.c execution test
FAIL: gcc.target/i386/pr80969-4b.c execution test
FAIL: gcc.target/i386/pr80969-4.c execution test
FAIL: g++.dg/ext/mv16.C  -std=gnu++11 execution test
FAIL: g++.dg/ext/mv16.C  -std=gnu++14 execution test
FAIL: g++.dg/ext/mv16.C  -std=gnu++98 execution test