[llvm] [JumpThreading] Add a hook to override options (PR #111826)

[Matt Arsenault via llvm-commits]

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@@ -304,10 +300,9 @@ bool JumpThreadingPass::runImpl(Function &F_, FunctionAnalysisManager *FAM_,
   // size.
   if (BBDuplicateThreshold.getNumOccurrences())
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arsenm wrote:

How about just do it now? It's not that much work. It's better for testing 

https://github.com/llvm/llvm-project/pull/111826