llvm-project

6129e1fe - [Utils] Hoist ValueMapper out of per-instruction remap loops in CloneFunction (#216014)

[Utils] Hoist ValueMapper out of per-instruction remap loops in CloneFunction (#216014) Remapping heap-allocates a ~500-byte Mapper per call and the clone paths call these once per instruction. Since every public ValueMapper method flushes on exit, a single instance of ValueMapper is used per loop reducing allocations from 500*N to 500 per loop. This change was developed with AI assistance. I have reviewed, tested, and understand it and take ownership of it.