Refactor float `Primitive`s to a separate `Float` type

1 files changed, 23 insertions, 4 deletions

diff --git a/compiler/rustc_middle/src/ty/layout.rs b/compiler/rustc_middle/src/ty/layout.rs
index f8490e5e15f..eb5dfd4e0c0 100644
--- a/compiler/rustc_middle/src/ty/layout.rs
+++ b/compiler/rustc_middle/src/ty/layout.rs
@@ -114,16 +114,35 @@ impl Integer {
     }
 }
 
-#[extension(pub trait PrimitiveExt)]
-impl Primitive {
+#[extension(pub trait FloatExt)]
+impl Float {
     #[inline]
     fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> {
         match *self {
-            Int(i, signed) => i.to_ty(tcx, signed),
             F16 => tcx.types.f16,
             F32 => tcx.types.f32,
             F64 => tcx.types.f64,
             F128 => tcx.types.f128,
+        }
+    }
+
+    fn from_float_ty(fty: ty::FloatTy) -> Self {
+        match fty {
+            ty::FloatTy::F16 => F16,
+            ty::FloatTy::F32 => F32,
+            ty::FloatTy::F64 => F64,
+            ty::FloatTy::F128 => F128,
+        }
+    }
+}
+
+#[extension(pub trait PrimitiveExt)]
+impl Primitive {
+    #[inline]
+    fn to_ty<'tcx>(&self, tcx: TyCtxt<'tcx>) -> Ty<'tcx> {
+        match *self {
+            Int(i, signed) => i.to_ty(tcx, signed),
+            Float(f) => f.to_ty(tcx),
             // FIXME(erikdesjardins): handle non-default addrspace ptr sizes
             Pointer(_) => Ty::new_mut_ptr(tcx, tcx.types.unit),
         }
@@ -140,7 +159,7 @@ impl Primitive {
                 let signed = false;
                 tcx.data_layout().ptr_sized_integer().to_ty(tcx, signed)
             }
-            F16 | F32 | F64 | F128 => bug!("floats do not have an int type"),
+            Float(_) => bug!("floats do not have an int type"),
         }
     }
 }