Implement simple CopyPropagation based on SSA analysis#106908
Merged
bors merged 12 commits intorust-lang:masterfrom Jan 29, 2023
Merged
Implement simple CopyPropagation based on SSA analysis#106908bors merged 12 commits intorust-lang:masterfrom
bors merged 12 commits intorust-lang:masterfrom
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This PR extracts the "copy propagation" logic from #106285.
MIR may produce chains of assignment between locals, like
_x = move? _y.This PR attempts to remove such chains by unifying locals.
The current implementation is a bit overzealous in turning moves into copies, and in removing storage statements.