Reapply "[VPlan] Add hidden `-vplan-print-after-all` option" (#178547) Re-commit of https://github.com/llvm/llvm-project/pull/175839 after fixing build without `LLVM_ENABLE_DUMP`. This consists of the following changes: * Merge several overloads of `VPlanTransforms::runPass` into a single function to avoid code duplication. * Add helper macro `RUN_VPLAN_PASS` to capture the transformation name and pass it to the helper above for printing. * Add new `-vplan-print-after-all` option (somewhat similar to existing `-vplan-verify-each`). * Add two empty passes `printAfterInitialConstruction`/`printFinalVPlan` so that initial/final VPlans would be supported in `-vplan-print-after-all` This follows the original future plans in https://github.com/llvm/llvm-project/pull/123640.
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