rustc_target: move LayoutOf to ty::layout.

Author: eddyb

src/common.rs

@@ -257,8 +257,7 @@ pub(crate) struct FunctionCx<'m, 'clif, 'tcx: 'm> {
 }
 
 impl<'tcx> LayoutOf<'tcx> for FunctionCx<'_, '_, 'tcx> {
-    type Ty = Ty<'tcx>;
-    type TyAndLayout = TyAndLayout<'tcx>;
+    type LayoutOfResult = TyAndLayout<'tcx>;
 
     fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
         RevealAllLayoutCx(self.tcx).layout_of(ty)
@@ -365,8 +364,7 @@ impl<'tcx> FunctionCx<'_, '_, 'tcx> {
 pub(crate) struct RevealAllLayoutCx<'tcx>(pub(crate) TyCtxt<'tcx>);
 
 impl<'tcx> LayoutOf<'tcx> for RevealAllLayoutCx<'tcx> {
-    type Ty = Ty<'tcx>;
-    type TyAndLayout = TyAndLayout<'tcx>;
+    type LayoutOfResult = TyAndLayout<'tcx>;
 
     fn layout_of(&self, ty: Ty<'tcx>) -> TyAndLayout<'tcx> {
         assert!(!ty.still_further_specializable());

src/lib.rs

@@ -79,12 +79,12 @@ mod prelude {
     pub(crate) use rustc_hir::def_id::{DefId, LOCAL_CRATE};
     pub(crate) use rustc_middle::bug;
     pub(crate) use rustc_middle::mir::{self, *};
-    pub(crate) use rustc_middle::ty::layout::{self, TyAndLayout};
+    pub(crate) use rustc_middle::ty::layout::{self, LayoutOf, TyAndLayout};
     pub(crate) use rustc_middle::ty::{
         self, FloatTy, Instance, InstanceDef, IntTy, ParamEnv, Ty, TyCtxt, TypeAndMut,
         TypeFoldable, UintTy,
     };
-    pub(crate) use rustc_target::abi::{Abi, LayoutOf, Scalar, Size, VariantIdx};
+    pub(crate) use rustc_target::abi::{Abi, Scalar, Size, VariantIdx};
 
     pub(crate) use rustc_data_structures::fx::FxHashMap;