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# Code Organization

Header files in include are public APIs that share across modules.
There can be internal header files within each module that sit in src.

## Modules
- common: Internal common utilities.
- runtime: Minimum runtime related codes.
- node: base infra for IR/AST nodes that is dialect independent.
- api: API function registration.
- lang: The definition of DSL related data structure.
- arithmetic: Arithmetic expression and set simplification.
- op: The detail implementations about each operation(compute, scan, placeholder).
- schedule: The operations on the schedule graph before converting to IR.
- pass: The optimization pass on the IR structure.
- codegen: The code generator.
- autotvm: The auto-tuning module.
- relay: Implementation of Relay. The second generation of NNVM, a new IR for deep learning frameworks.
- contrib: Contrib extension libraries.
