[llvm] [lit] Optionally exclude xfail tests (PR #151191)

[Joel E. Denny via llvm-commits]

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@@ -5,6 +5,18 @@
 # RUN:   %{inputs}/xfail-cl \
 # RUN: | FileCheck --check-prefix=CHECK-FILTER %s
 
+# RUN: %{lit} --xfail 'false.txt;false2.txt;top-level-suite :: b :: test.txt' \
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jdenny-ornl wrote:

We should have an `XFAIL: foo` case where `foo` is false.

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