[llvm] [lit] Support wildcard in --xfail-not option (PR #151191)

[Joel E. Denny via llvm-commits]

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@@ -2175,6 +2175,8 @@ def parseIntegratedTestScript(test, additional_parsers=[], require_script=True):
     assert parsed["DEFINE:"] == script
     assert parsed["REDEFINE:"] == script
     test.xfails += parsed["XFAIL:"] or []
+    if test.xfails and test.skip_xfail:
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jdenny-ornl wrote:

What happens for `XFAIL: foo` where `foo` is not true for the current platform, so the test is expected to pass?  Doesn't this still skip it?  I think `test.isExpectedToFail` is needed.

https://github.com/llvm/llvm-project/pull/151191