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swift-mirror/SwiftCompilerSources/Sources/Optimizer
Erik Eckstein cea7da8d26 RedundantLoadElimination: correctly handle end_borrow instructions
Scope-ending instructions, like `end_borrow` are only irrelevant for RLE if the preceding load is not changed.
If it is changed from `load [copy]` -> `load [take]` the memory effects of those scope-ending instructions prevent that the `load [take]` will illegally mutate memory which is protected from mutation by the scope.

Fixes a memory verifier crash
rdar://139824805
2024-11-14 18:25:11 +01:00
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