Implement RFC 3943: MIR move elimination - #157943

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Amanieu wants to merge 9 commits into

rust-lang:mainfrom

Amanieu:move-elimination

Commits on Jun 23, 2026

Remove incorrect comments about Rvalue::Aggregate not being allowed
Amanieu
committed
1e72edf
Pass block to `visit_block_start` and `visit_block_end`
Amanieu
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031fcc2
Various changes to `SparseIntervalMatrix`
Amanieu
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2311478
Add precise MIR liveness analysis
Amanieu
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f54d22b
Add MIR move elimination pass
Amanieu
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edd7791
Add a MIR pass which turns copies into moves just before a return
Amanieu
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f695470
Gate move elimination behind -Z mir-move-elimination
Amanieu
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8254273
Address review feedback
Amanieu
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454a459

Commits on Jul 6, 2026

Address more review feedback
Amanieu
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d70d9f0