Optimizer: add an optimization to remove copy_value of a borrowed value.
#78068
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…alue. It removes a `copy_value` where the source is a guaranteed value, if possible: ``` %1 = copy_value %0 // %0 = a guaranteed value // uses of %1 destroy_value %1 // borrow scope of %0 is still valid here ``` -> ``` // uses of %0 ``` This optimization is very similar to the LoadCopyToBorrow optimization. Therefore I merged both optimizations into a single file and renamed it to "CopyToBorrowOptimization".
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@swift-ci test |
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@swift-ci benchmark |
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It removes a
copy_valuewhere the source is a guaranteed value, if possible:->
This optimization is very similar to the LoadCopyToBorrow optimization.
Therefore I merged both optimizations into a single file and renamed it to "CopyToBorrowOptimization".
This is part of fixing benchmark regressions when enabling OSSA modules.
rdar://139773406