[llvm] [lit] add --max-retries-per-test execution option (PR #141851)

[Konrad Kleine via llvm-commits]

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@@ -0,0 +1,23 @@
+# ALLOW_RETRIES: 3
+# RUN: "%python" "%s" "%counter"
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kwk wrote:

`%t` is unique to a test (see [here](https://llvm.org/docs/CommandGuide/lit.html#substitutions). I guess the `%t.counter` in the `allow-retries.py` is unique but it wouldn't be unique over all test runs when used in the `test.py`, right?

https://github.com/llvm/llvm-project/pull/141851