[llvm] [VPlan] Add simple driver option to run some individual transforms. (PR #178522)

[Ramkumar Ramachandra via llvm-commits]

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@@ -577,6 +577,10 @@ FUNCTION_PASS_WITH_PARAMS(
     "cfguard", "CFGuardPass",
     [](CFGuardPass::Mechanism M) { return CFGuardPass(M); },
     parseCFGuardPassOptions, "check;dispatch")
+FUNCTION_PASS_WITH_PARAMS(
+    "vplan-test", "VPlanTestPass",
+    [](StringRef Pipeline) { return VPlanTestPass(Pipeline); },
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artagnon wrote:

```suggestion
    VPlanTestPass,
```

doesn't work?

https://github.com/llvm/llvm-project/pull/178522