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authorbors <bors@rust-lang.org>2024-08-14 00:56:53 +0000
committerbors <bors@rust-lang.org>2024-08-14 00:56:53 +0000
commite9c965df7b75ab5b1ae8f9a2680839ac1a1a3880 (patch)
tree4822d048daddf346eee47d7b2b844c98f0641906 /compiler/rustc_codegen_llvm/src
parente5b3e68abf170556b9d56c6f9028318e53c9f06b (diff)
parentbbd1c3ab73a931bf4823eec836de57e837d2161c (diff)
downloadrust-e9c965df7b75ab5b1ae8f9a2680839ac1a1a3880.tar.gz
rust-e9c965df7b75ab5b1ae8f9a2680839ac1a1a3880.zip
Auto merge of #128812 - nnethercote:shrink-TyKind-FnPtr, r=compiler-errors
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`
Diffstat (limited to 'compiler/rustc_codegen_llvm/src')
-rw-r--r--compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs2
1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
index ad638588612..87bea22d8dd 100644
--- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
+++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs
@@ -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),