[Bug 224669] [exp-run] Against projects/clang600-import branch

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=224669

--- Comment #59 from Jan Beich <jbeich at FreeBSD.org> ---
Dimitry, assuming cluster machines support AVX2 how useful an -exp run with the
following in make.conf would be in terms of uncovering Clang crashes? Would
C++98 workaround get in the way if applied for better coverage?

  CPUTYPE ?= native
  # XXX bug 112997: Haswell-like
  MACHINE_CPU += avx2 avx sse42 sse41 ssse3 sse3 popcnt fma3
  .if ${MACHINE_CPUARCH} == i386
  MACHINE_CPU += sse2 sse i686 mmx i586 i486
  .endif

Reading bug 223300 and bug 225488 I get the impression quite a few of our users
tweak CPUTYPE.

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