[clang] [CIR] Intitial upstreaming of LibOpt pass (PR #172487)

[Bruno Cardoso Lopes via cfe-commits]

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@@ -21,7 +21,8 @@ mlir::LogicalResult runCIRToCIRPasses(mlir::ModuleOp theModule,
                                       mlir::MLIRContext &mlirContext,
                                       clang::ASTContext &astContext,
                                       bool enableVerifier,
-                                      bool enableCIRSimplify) {
+                                      bool enableCIRSimplify, bool enableLibOpt,
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bcardosolopes wrote:

Also: `libOptOptions` is threaded all the way here but never passed to `createLibOptPass()`. Either wire it through or drop it until it's needed.

https://github.com/llvm/llvm-project/pull/172487