llvm-project

2de78815 - [NFC] Move DroppedVariableStats to its own file and redesign it to be extensible. (#115563)

[NFC] Move DroppedVariableStats to its own file and redesign it to be extensible. (#115563) Move DroppedVariableStats code to its own file and change the class to have an extensible design so that we can use it to add dropped statistics to MIR passes and the instruction selector.