[clang] [CIR] Recognize strlen in the IdiomRecognizer pass (PR #210400)

[Erich Keane via cfe-commits]

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@@ -103,7 +151,10 @@ struct IdiomRecognizerPass
 
 void IdiomRecognizerPass::recognizeStandardLibraryCall(
     CallOp call, mlir::SymbolTableCollection &symbolTables) {
-  StdRecognizer<StdFindOp>::raise(call, getContext(), symbolTables);
+  if (StdRecognizer<StdFindOp>::raise(call, getContext(), symbolTables))
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erichkeane wrote:

So I suspect we are going to have a lot of these.  I suspect we actually want our `StdRecognizer` to take a LIST of ops and use a fold to do the recognition.

https://github.com/llvm/llvm-project/pull/210400