YJIT: Add a specialized codegen function for `Class#superclass`. (#10613)

Add a specialized codegen function for `Class#superclass`.

Co-authored-by: Maxime Chevalier-Boisvert <maxime.chevalierboisvert@shopify.com>
Co-authored-by: Takashi Kokubun (k0kubun) <takashikkbn@gmail.com>
Co-authored-by: Randy Stauner <randy.stauner@shopify.com>
Co-authored-by: Alan Wu <XrXr@users.noreply.github.com>

1 files changed, 16 insertions, 0 deletions

diff --git a/bootstraptest/test_yjit.rb b/bootstraptest/test_yjit.rb
index 2e190a5b9c..216594f6cc 100644
--- a/bootstraptest/test_yjit.rb
+++ b/bootstraptest/test_yjit.rb
@@ -4816,3 +4816,19 @@ assert_equal "abc", %q{
   change_bytes(str, to_int_1, to_int_99)
   str
 }
+
+assert_equal '["raised", "Module", "Object"]', %q{
+  def foo(obj)
+    obj.superclass.name
+  end
+
+  ret = []
+
+  begin
+    foo(Class.allocate)
+  rescue TypeError
+    ret << 'raised'
+  end
+
+  ret += [foo(Class), foo(Class.new)]
+}