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| author | Yuanfang Chen <yuanfang.chen@sony.com> | 2020-12-28 16:56:11 -0800 |
|---|---|---|
| committer | Yuanfang Chen <yuanfang.chen@sony.com> | 2020-12-28 17:36:36 -0800 |
| commit | 4646de5d75cfce3da4ddeffb6eb8e66e38238800 (patch) | |
| tree | d8e59b76fcdb51504a3f2ebaa7ac4ee6694d4c68 /llvm/lib/CodeGen/MachineFunction.cpp | |
| parent | f782d5ea86f6fc82b51a0de688bf292f39cc4814 (diff) | |
| download | llvm-4646de5d75cfce3da4ddeffb6eb8e66e38238800.zip llvm-4646de5d75cfce3da4ddeffb6eb8e66e38238800.tar.gz llvm-4646de5d75cfce3da4ddeffb6eb8e66e38238800.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, aeubanks
Differential Revision: https://reviews.llvm.org/D83608
Diffstat (limited to 'llvm/lib/CodeGen/MachineFunction.cpp')
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