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| author | Yuanfang Chen <yuanfang.chen@sony.com> | 2020-09-11 15:56:27 -0700 |
|---|---|---|
| committer | Yuanfang Chen <yuanfang.chen@sony.com> | 2020-09-11 16:41:17 -0700 |
| commit | 31ecf8d29d81d196374a562c6d2bd2c25a62861e (patch) | |
| tree | ea17aff0aa4c0e943bce29d06ca3ecb72a889397 /clang/lib/Frontend/CompilerInvocation.cpp | |
| parent | 12292c8b27aca8d173a3a2825f2e8aeb383cc695 (diff) | |
| download | llvm-31ecf8d29d81d196374a562c6d2bd2c25a62861e.zip llvm-31ecf8d29d81d196374a562c6d2bd2c25a62861e.tar.gz llvm-31ecf8d29d81d196374a562c6d2bd2c25a62861e.tar.bz2 | |
[NewPM][CodeGen] Introduce CodeGenPassBuilder to help build codegen pipeline
Following up on D67687.
Please refer to the RFC here http://lists.llvm.org/pipermail/llvm-dev/2020-July/143309.html
`CodeGenPassBuilder` is the NPM counterpart of `TargetPassConfig` with below differences.
- Debugging features (MIR print/verify, disable pass, start/stop-before/after, etc.) living in `TargetPassConfig` are moved to use PassInstrument as much as possible. (Implementation also lives in `TargetPassConfig.cpp`)
- `TargetPassConfig` is a polymorphic base (virtual inheritance) to build the target-dependent pipeline whereas `CodeGenPassBuilder` is the CRTP base/helper to implement the target-dependent pipeline. The motivation is flexibility for targets to customize the pipeline, inlining opportunity, and fits the overall NPM value semantics design.
- `TargetPassConfig` is a legacy immutable pass to declare hooks for targets to customize some target-independent codegen layer behavior. This is partially ported to TargetMachine::options. The rest, such as `createMachineScheduler/createPostMachineScheduler`, are left out for now. They should be implemented in LLVMTargetMachine in the future.
Reviewed By: arsenm
Differential Revision: https://reviews.llvm.org/D83608
Diffstat (limited to 'clang/lib/Frontend/CompilerInvocation.cpp')
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