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2a5fda92b4
Allow callers of `Value::print()` and `Metadata::print()` to pass in a `ModuleSlotTracker`. This allows them to pay only once for calculating module-level slots (such as Metadata). This is related to PR23865, where there was a huge cost for `MachineFunction::print()`. Although I don't have a *particular* user in mind for this new code, I have hit big slowdowns before when running `opt -debug`, and I think this will be useful. Going forward, if someone hits a big slowdown with `print()` statements, they can create a `ModuleSlotTracker` and send it through. Similarly, adding support to `Value::dump()` and `Metadata::dump()` should be trivial. I added unit tests to be sure the `print()` functions actually behave the same way with and without the slot tracker. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@240867 91177308-0d34-0410-b5e6-96231b3b80d8 |
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