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| author | Nicholas Nethercote <n.nethercote@gmail.com> | 2024-08-08 17:18:20 +1000 |
|---|---|---|
| committer | Nicholas Nethercote <n.nethercote@gmail.com> | 2024-08-09 14:33:25 +1000 |
| commit | c4717cc9d15d30e08f03f51845c950175979bcc4 (patch) | |
| tree | b5fcace143e45b8b7e82b77fb2c8eec40751169f /compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs | |
| parent | 8640998869b28adab4b8faeaee169744804d3e68 (diff) | |
| download | rust-c4717cc9d15d30e08f03f51845c950175979bcc4.tar.gz rust-c4717cc9d15d30e08f03f51845c950175979bcc4.zip | |
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.
Diffstat (limited to 'compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs')
| -rw-r--r-- | compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs index e2d3ff558cf..89acb778d6c 100644 --- a/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs +++ b/compiler/rustc_hir_analysis/src/coherence/inherent_impls.rs @@ -172,7 +172,7 @@ impl<'tcx> InherentCollect<'tcx> { | ty::RawPtr(_, _) | ty::Ref(..) | ty::Never - | ty::FnPtr(_) + | ty::FnPtr(..) | ty::Tuple(..) => self.check_primitive_impl(id, self_ty), ty::Alias(ty::Projection | ty::Inherent | ty::Opaque, _) | ty::Param(_) => { Err(self.tcx.dcx().emit_err(errors::InherentNominal { span: item_span })) |