llvm-project

fe6782da - [TargetInstrInfo] Add target hook for InstrSchedModel latency. [NFCI]

[TargetInstrInfo] Add target hook for InstrSchedModel latency. [NFCI] Allows targets to dynamically set latency values in the DAG builder. This is useful in multi-pass schedulers like in the AMDGUP backend where we may want to schedule a region multiple times with a different machine model or tweaked latencies for a specific instruction type.