Move Derefer before Retag #96549
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Move Derefer before Retag #96549
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oli-obk
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some style nits and CI is unhappy with the |
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@bors r+ |
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📌 Commit d9ddb64 has been approved by |
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Finished benchmarking commit (6eda764): comparison url. Summary:
If you disagree with this performance assessment, please file an issue in rust-lang/rustc-perf. @rustbot label: -perf-regression Footnotes |
RalfJung
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| @@ -57,6 +57,17 @@ fn may_be_reference(ty: Ty<'_>) -> bool { | |||
| } | |||
| } | |||
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| /// Determines whether or not this LocalDecl is temp, if not it needs retagging. | |||
| fn is_not_temp<'tcx>(local_decl: &LocalDecl<'tcx>) -> bool { | |||
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is_temp would be slightly clearer I think; return false inside this function is a double negation which is somewhat confusing.
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You are right, I will change this function in the next update of derefer.
RalfJung
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| @@ -1079,6 +1079,8 @@ pub enum LocalInfo<'tcx> { | |||
| /// A temporary created during the creation of an aggregate | |||
| /// (e.g. a temporary for `foo` in `MyStruct { my_field: foo }`) | |||
| AggregateTemp, | |||
| /// A temporary created during the pass `Derefer` to avoid it's retagging | |||
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(should be "its retagging"... not a big deal though)
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…idtwco Add validation layer for Derefer _Follow up work to rust-lang#96549 rust-lang#96116 rust-lang#95857 #95649_ This adds validation for Derefer making sure it is always the first projection. r? rust-lang/mir-opt
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…twco Add validation layer for Derefer _Follow up work to rust-lang#96549 rust-lang#96116 rust-lang#95857 #95649_ This adds validation for Derefer making sure it is always the first projection. r? rust-lang/mir-opt
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Pull Derefer before ElaborateDrops _Follow up work to rust-lang#97025 rust-lang#96549 rust-lang#96116 rust-lang#95887 #95649_ This moves `Derefer` before `ElaborateDrops` and creates a new `Rvalue` called `VirtualRef` that allows us to bypass many constraints for `DerefTemp`. r? `@oli-obk`
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Pull Derefer before ElaborateDrops _Follow up work to rust-lang#97025 rust-lang#96549 rust-lang#96116 rust-lang#95887 #95649_ This moves `Derefer` before `ElaborateDrops` and creates a new `Rvalue` called `VirtualRef` that allows us to bypass many constraints for `DerefTemp`. r? ``@oli-obk``
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Pull Derefer before ElaborateDrops _Follow up work to rust-lang#97025 rust-lang#96549 rust-lang#96116 rust-lang#95887 #95649_ This moves `Derefer` before `ElaborateDrops` and creates a new `Rvalue` called `VirtualRef` that allows us to bypass many constraints for `DerefTemp`. r? `@oli-obk`
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Pull Derefer before ElaborateDrops _Follow up work to rust-lang#97025 rust-lang#96549 rust-lang#96116 rust-lang#95887 #95649_ This moves `Derefer` before `ElaborateDrops` and creates a new `Rvalue` called `VirtualRef` that allows us to bypass many constraints for `DerefTemp`. r? `@oli-obk`
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Pull Derefer before ElaborateDrops _Follow up work to rust-lang#97025 rust-lang#96549 rust-lang#96116 rust-lang#95887 #95649_ This moves `Derefer` before `ElaborateDrops` and creates a new `Rvalue` called `VirtualRef` that allows us to bypass many constraints for `DerefTemp`. r? `@oli-obk`
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Follow up work to #96116 #95857 #95649
This moves
DereferbeforeRetagand creates a newLocalInfocalledTempto avoid retagging created temp values.Zulip discussion link
r? @oli-obk