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

2
compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
View file

@ -456,7 +456,7 @@ pub fn type_di_node<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>) -> &'ll D
{
build_pointer_or_reference_di_node(cx, t, t.boxed_ty(), unique_type_id)
}
ty::FnDef(..) | ty::FnPtr(_) => build_subroutine_type_di_node(cx, unique_type_id),
ty::FnDef(..) | ty::FnPtr(..) => build_subroutine_type_di_node(cx, unique_type_id),
ty::Closure(..) => build_closure_env_di_node(cx, unique_type_id),
ty::CoroutineClosure(..) => build_closure_env_di_node(cx, unique_type_id),
ty::Coroutine(..) => enums::build_coroutine_di_node(cx, unique_type_id),