bjoernager/rust
bjoernager/rust
1
Fork 0
Code Issues Pull requests Activity

Auto merge of #128812 - nnethercote:shrink-TyKind-FnPtr, r=compiler-errors

Browse source 
Shrink `TyKind::FnPtr`.

By splitting the `FnSig` within `TyKind::FnPtr` into `FnSigTys` and `FnHeader`, which can be packed more efficiently. This reduces the size of the hot `TyKind` type from 32 bytes to 24 bytes on 64-bit platforms. This reduces peak memory usage by a few percent on some benchmarks. It also reduces cache misses and page faults similarly, though this doesn't translate to clear cycles or wall-time improvements on CI.

r? `@compiler-errors`
This commit is contained in:
bors 2024-08-14 00:56:53 +00:00
commit e9c965df7b
89 changed files with 315 additions and 231 deletions
Download patch file Download diff file Expand all files Collapse all files

4
compiler/rustc_mir_dataflow/src/move_paths/builder.rs
View file

@ -158,7 +158,7 @@ impl<'b, 'a, 'tcx, F: Fn(Ty<'tcx>) -> bool> Gatherer<'b, 'a, 'tcx, F> {
| ty::Pat(_, _)
| ty::Slice(_)
| ty::FnDef(_, _)
| ty::FnPtr(_)
| ty::FnPtr(..)
| ty::Dynamic(_, _, _)
| ty::Closure(..)
| ty::CoroutineClosure(..)
@ -201,7 +201,7 @@ impl<'b, 'a, 'tcx, F: Fn(Ty<'tcx>) -> bool> Gatherer<'b, 'a, 'tcx, F> {
| ty::RawPtr(_, _)
| ty::Ref(_, _, _)
| ty::FnDef(_, _)
| ty::FnPtr(_)
| ty::FnPtr(..)
| ty::Dynamic(_, _, _)
| ty::CoroutineWitness(..)
| ty::Never