| commit | e760d0619fe573113fe5a08cc101aafe9ed3a56e | [log] [tgz] |
|---|---|---|
| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | Fri Dec 12 01:24:38 2025 |
| committer | GitHub <noreply@github.com> | Fri Dec 12 01:24:38 2025 |
| tree | 35ef5693e0c679cd6d3492bb55969d60bef28eb2 | |
| parent | b2f36149d820ab8d2c74de328ced4821408eca7f [diff] |
AMDGPU/PromoteAlloca: Refactor into analysis / commit phases (#170512) This change is motivated by the overall goal of finding alternative ways to promote allocas to VGPRs. The current solution is effectively limited to allocas whose size matches a register class, and we can't keep adding more register classes. We have some downstream work in this direction, and I'm currently looking at cleaning that up to bring it upstream. This refactor paves the way to adding a third way of promoting allocas, on top of the existing alloca-to-vector and alloca-to-LDS. Much of the analysis can be shared between the different promotion techniques. Additionally, the idea behind splitting the pass into an analysis phase and a commit phase is that it ought to allow us to more easily make better "big picture" decision about which allocas to promote how in the future.
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