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[CanonicalizeBorrowScope] Look through moves.

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When encountering inside a borrow scope a non-lexical move_value or a
move_value [lexical] where the borrowed value is itself already lexical,
delete the move_value and regard its uses as uses of the moved-from
value.
This commit is contained in:
Nate Chandler
2023-01-18 17:24:30 -08:00
parent 11b76da7fa
commit 10e86d6653
5 changed files with 117 additions and 24 deletions
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include/swift/SILOptimizer/Utils/CanonicalizeOSSALifetime.h
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@@ -109,7 +109,7 @@
namespace swift {
extern llvm::Statistic NumCopiesEliminated;
extern llvm::Statistic NumCopiesAndMovesEliminated;
extern llvm::Statistic NumCopiesGenerated;
/// Insert a copy on this operand. Trace and update stats.