Raw pointer support

This adds the initial support for raw pointers. Pointers rely on coercion
rules to be able to coerce the raw fat pointers from a borrow expression
into a normal raw pointer.

Fixes #124

2 files changed, 24 insertions, 3 deletions

diff --git a/gcc/rust/backend/rust-compile-context.h b/gcc/rust/backend/rust-compile-context.h
index efca267..bb4f0ab 100644
--- a/gcc/rust/backend/rust-compile-context.h
+++ b/gcc/rust/backend/rust-compile-context.h
@@ -536,10 +536,29 @@ public:
   {
     Btype *base_compiled_type
       = TyTyResolveCompile::compile (ctx, type.get_base ());
-    translated = ctx->get_backend ()->reference_type (base_compiled_type);
-    if (!type.is_mutable ())
+    if (type.is_mutable ())
       {
-	translated = ctx->get_backend ()->immutable_type (translated);
+	translated = ctx->get_backend ()->reference_type (base_compiled_type);
+      }
+    else
+      {
+	auto base = ctx->get_backend ()->immutable_type (base_compiled_type);
+	translated = ctx->get_backend ()->reference_type (base);
+      }
+  }
+
+  void visit (TyTy::PointerType &type) override
+  {
+    Btype *base_compiled_type
+      = TyTyResolveCompile::compile (ctx, type.get_base ());
+    if (type.is_mutable ())
+      {
+	translated = ctx->get_backend ()->pointer_type (base_compiled_type);
+      }
+    else
+      {
+	auto base = ctx->get_backend ()->immutable_type (base_compiled_type);
+	translated = ctx->get_backend ()->pointer_type (base);
       }
   }
 
diff --git a/gcc/rust/backend/rust-compile-tyty.h b/gcc/rust/backend/rust-compile-tyty.h
index d2890e0..2d0856d 100644
--- a/gcc/rust/backend/rust-compile-tyty.h
+++ b/gcc/rust/backend/rust-compile-tyty.h
@@ -62,6 +62,8 @@ public:
 
   void visit (TyTy::ReferenceType &) override { gcc_unreachable (); }
 
+  void visit (TyTy::PointerType &) override { gcc_unreachable (); }
+
   void visit (TyTy::ParamType &) override { gcc_unreachable (); }
 
   void visit (TyTy::FnPtr &) override { gcc_unreachable (); }