Add verified LLVM cleanup passes with retention and replay regressions - #9
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Closing; superseded by upstream Rust-GPU#408. |
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Adds verified merged-module GlobalDCE by default and opt-in scalar, inlining, and per-module cleanup settings. Includes retention negative controls, guarded-select fixtures, host IR checks, and standalone replay comparisons. Existing experimental API names are preserved.
Native stack: #3 → #7 → #8 → #9 → #10. Base: #8.
Validation: six Python tests at this layer and both guarded-select host tests pass. Default-DCE export CI passed before restacking; updated CI is pending. Opt-in pipelines still need fresh LLVM 21 replay validation; historical LLVM 19 results are not a substitute.