1 files changed, 13 insertions, 0 deletions
diff --git a/test/ruby/test_zjit.rb b/test/ruby/test_zjit.rb
index ff43827c5a..5336c6cc47 100644
--- a/test/ruby/test_zjit.rb
+++ b/test/ruby/test_zjit.rb
@@ -479,6 +479,19 @@ class TestZJIT < Test::Unit::TestCase
     }, call_threshold: 5, num_profiles: 3
   end
 
+  # tool/ruby_vm/views/*.erb relies on the zjit instructions a) being contiguous and
+  # b) being reliably ordered after all the other instructions.
+  def test_instruction_order
+    insn_names = RubyVM::INSTRUCTION_NAMES
+    zjit, others = insn_names.map.with_index.partition { |name, _| name.start_with?('zjit_') }
+    zjit_indexes = zjit.map(&:last)
+    other_indexes = others.map(&:last)
+    zjit_indexes.product(other_indexes).each do |zjit_index, other_index|
+      assert zjit_index > other_index, "'#{insn_names[zjit_index]}' at #{zjit_index} "\
+        "must be defined after '#{insn_names[other_index]}' at #{other_index}"
+    end
+  end
+
   private
 
   # Assert that every method call in `test_script` can be compiled by ZJIT