message: Un-XFail TestYMMRegister on linux
  This test was disabled in r326756 as a part of "upstreaming debugserver
  support for (zmm register set)". This looks like an error
  because both register set and remote stubs are different.
  In any case, the test passes now.
diff: @@ -21,7 +21,6 @@ class TestYMMRegister(TestBase):
  @skipIfiOSSimulator
  @skipIfTargetAndroid()
  @skipIf(archs=no_match(['i386', 'x86_64']))
  - @expectedFailureAll(oslist=["linux"], bugnumber="rdar://30523153")
  @expectedFailureAll(oslist=["windows"], bugnumber="llvm.org/pr37995")
  def test(self):
  self.build(dictionary={"CFLAGS_EXTRAS": "-march=haswell"})
  