[llvm] [lit] Use functools.lru_cache instead of lit.util.memoize (PR #217757)

[Prasoon Kumar via llvm-commits]

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@@ -1438,7 +1439,7 @@ def regex_escape(s):
     return substitutions
 
 
- at lit.util.memoize  # Intentionally unbounded: see applySubstitutions
+ at functools.lru_cache(maxsize=None)  # Intentionally unbounded: see applySubstitutions
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prasoon054 wrote:

Done!

https://github.com/llvm/llvm-project/pull/217757