[llvm] [SandboxVec] Add pass to create Regions from metadata. Generalize SandboxVec pass pipelines. (PR #112288)

[via llvm-commits]

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@@ -50,40 +50,130 @@ class PassManager : public ParentPass {
   }
 
   using CreatePassFunc =
-      std::function<std::unique_ptr<ContainedPass>(StringRef)>;
+      std::function<std::unique_ptr<ContainedPass>(StringRef, StringRef)>;
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vporpo wrote:

Could you add a brief comment that somehow explains what each argument is, perhaps something like: `/// CreatePassFunc(PassName, PassArgs)`

https://github.com/llvm/llvm-project/pull/112288