YJIT: Implement concatarray in yjit (https://github.com/Shopify/ruby/pull/405)

* Create code generation func

* Make rb_vm_concat_array available to use in Rust

* Map opcode to code gen func

* Implement code gen for concatarray

* Add test for concatarray

* Use new asm backend

* Add comment to C func wrapper

1 files changed, 10 insertions, 0 deletions

diff --git a/bootstraptest/test_yjit.rb b/bootstraptest/test_yjit.rb
index 89d7c9a038..364ed7094b 100644
--- a/bootstraptest/test_yjit.rb
+++ b/bootstraptest/test_yjit.rb
@@ -3245,3 +3245,13 @@ assert_equal 'foo', %q{
   end
   foo { "foo" }.call
 }
+
+assert_equal '[1, 2]', %q{
+  def foo
+    x = [2]
+    [1, *x]
+  end
+
+  foo
+  foo
+}