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authorAndreas Rumpf <rumpf_a@web.de>2023-10-11 17:44:14 +0200
committerGitHub <noreply@github.com>2023-10-11 17:44:14 +0200
commit816589b6674e3af281766f1279420758dcacedc4 (patch)
tree3e4f825e29e2068466a35edc69cc27967b743687 /lib/std/files.nim
parentecaccafa6c18e0b92cd5f75d3363d61c0866dec9 (diff)
downloadNim-816589b6674e3af281766f1279420758dcacedc4.tar.gz
NIR: Nim intermediate representation (#22777)
Theoretical Benefits / Plans: 

- Typed assembler-like language.
- Allows for a CPS transformation.
- Can replace the existing C backend by a new C backend.
- Can replace the VM.
- Can do more effective "not nil" checking and static array bounds
checking.
- Can be used instead of the DFA.
- Easily translatable to LLVM.
- Reasonably easy to produce native code from.
- Tiny memory consumption. No pointers, no cry.

**In very early stages of development.**

Todo:
- [x] Map Nim types to IR types.
- [ ] Map Nim AST to IR instructions:
  - [x] Map bitsets to bitops.
  - [ ] Implement string cases.
  - [ ] Implement range and index checks.
  - [x] Implement `default(T)` builtin.
  - [x] Implement multi string concat.
- [ ] Write some analysis passes.
- [ ] Write a backend.
- [x] Integrate into the compilation pipeline.
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