Add Char ty to SMIR

Author: spastorino

compiler/rustc_smir/src/rustc_smir/mod.rs

@@ -71,7 +71,7 @@ impl<'tcx> Tables<'tcx> {
     fn rustc_ty_to_ty(&mut self, ty: Ty<'tcx>) -> TyKind {
         match ty.kind() {
             ty::Bool => TyKind::RigidTy(RigidTy::Bool),
-            ty::Char => todo!(),
+            ty::Char => TyKind::RigidTy(RigidTy::Char),
             ty::Int(_) => todo!(),
             ty::Uint(_) => todo!(),
             ty::Float(_) => todo!(),

compiler/rustc_smir/src/stable_mir/ty.rs

@@ -17,5 +17,6 @@ pub enum TyKind {
 #[derive(Clone, Debug)]
 pub enum RigidTy {
     Bool,
+    Char,
     Tuple(Vec<Ty>),
 }

tests/ui-fulldeps/stable-mir/crate-info.rs

@@ -67,7 +67,7 @@ fn test_stable_mir(tcx: TyCtxt<'_>) {
 
     let types = get_item(tcx, &items, (DefKind::Fn, "types")).unwrap();
     let body = types.body();
-    assert_eq!(body.locals.len(), 2);
+    assert_eq!(body.locals.len(), 3);
     assert_matches!(
         body.locals[0].kind(),
         stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Bool)
@@ -76,6 +76,10 @@ fn test_stable_mir(tcx: TyCtxt<'_>) {
         body.locals[1].kind(),
         stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Bool)
     );
+    assert_matches!(
+        body.locals[2].kind(),
+        stable_mir::ty::TyKind::RigidTy(stable_mir::ty::RigidTy::Char)
+    );
 
     let drop = get_item(tcx, &items, (DefKind::Fn, "drop")).unwrap();
     let body = drop.body();
@@ -167,7 +171,7 @@ fn generate_input(path: &str) -> std::io::Result<()> {
         x_64.wrapping_add(y_64)
     }}
 
-    pub fn types(b: bool) -> bool {{
+    pub fn types(b: bool, _: char) -> bool {{
         b
     }}