Add new benchmark testing initialize performance

benchmarks.yml

@@ -202,6 +202,11 @@ object-new:
   category: micro
   single_file: true
   ractor: true
+object-new-ivars:
+  desc: instantiate a new object with ivars in a loop to test allocation and escape analysis performance
+  category: micro
+  single_file: true
+  ractor: true
 respond_to:
   desc: respond_to tests the performance of the respond_to? method.
   category: micro

benchmarks/object-new-ivars.rb

@@ -0,0 +1,25 @@
+require_relative '../harness/loader'
+
+class Point
+  attr_reader :x, :y
+  def initialize(x, y)
+    @x = x
+    @y = y
+  end
+
+  def ==(other)
+    @x == other.x && @y == other.y
+  end
+end
+
+def test
+  Point.new(1, 2) == Point.new(1, 2)
+end
+
+run_benchmark(100) do
+  i = 0
+  while i < 1_000_000
+    test
+    i += 1
+  end
+end