Add support for Machine IR (MIR) triplet and entity generation in llvm-ir2vec.
This change extends llvm-ir2vec to support Machine IR (MIR) in addition to LLVM IR, enabling the generation of training data for MIR2Vec embeddings. MIR2Vec provides machine-level code embeddings that capture target-specific instruction semantics, complementing the target-independent IR2Vec embeddings.
- Extended llvm-ir2vec to support triplet and entity generation for Machine IR (MIR)
- Added `--mode=mir` option to specify MIR mode (vs LLVM IR mode)
- Implemented MIR triplet generation with Next and Arg relationships
- Added entity mapping generation for MIR vocabulary
- Updated documentation to explain MIR-specific features and usage
(Partially addresses #162200 ; Tracking issue - #141817)
10bec2cd9d
