AgentSkillsCN

sounio-codegen-backends

参与 Sounio 代码生成与后端开发（Cranelift、LLVM、GPU、原生 ELF 后端）；在编辑 `compiler/src/codegen/`、`compiler/src/backend/` 或与后端紧密相关的运行时胶水代码时，可灵活运用此技能。

SKILL.md
--- frontmatter
name: sounio-codegen-backends
description: "Work on Sounio code generation and backends (Cranelift, LLVM, GPU, native ELF backend); use when editing `compiler/src/codegen/`, `compiler/src/backend/`, or backend-adjacent runtime glue."

Sounio Codegen + Backends

Overview

Implement and debug lowering/codegen without breaking IR invariants or backend feature-flag boundaries.

Workflow

1) Pick the backend path and feature flags

  • •Cranelift: compiler/src/codegen/cranelift.rs (feature: jit)
  • •MIR→Cranelift: compiler/src/codegen/mir_cranelift.rs
  • •LLVM: compiler/src/codegen/llvm/ (feature: llvm)
  • •GPU: compiler/src/codegen/gpu/ (feature: gpu)
  • •Native backend (ELF/linker): compiler/src/backend/native/

2) Keep IR invariants explicit

  • •If you change HLIR/MIR shape, validate passes and analyses that assume SSA form.
  • •Be conservative around effectful ops when doing backend optimizations.

3) Add targeted tests

  • •Prefer Rust tests close to the backend (compiler/src/**/tests and compiler/tests/).
  • •GPU tests typically require --features gpu (see .claude/commands/sounio-gpu.md).

References

  • •Codegen map: references/codegen-navigation.md
  • •Feature flags: references/feature-flags.md
  • •Claude command references: .claude/commands/sounio-gpu.md, .claude/commands/sounio-build.md