From 9fa127416a24312ce2f356c3317f6ff2520977b5 Mon Sep 17 00:00:00 2001
From: Takashi Kokubun <takashikkbn@gmail.com>
Date: Fri, 3 Mar 2023 21:50:49 -0800
Subject: Implement protected

---
 lib/ruby_vm/mjit/assembler.rb | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib/ruby_vm/mjit/assembler.rb')

diff --git a/lib/ruby_vm/mjit/assembler.rb b/lib/ruby_vm/mjit/assembler.rb
index 9e28f6cef3..20cad72a39 100644
--- a/lib/ruby_vm/mjit/assembler.rb
+++ b/lib/ruby_vm/mjit/assembler.rb
@@ -828,6 +828,15 @@ module RubyVM::MJIT
           opcode: 0x85,
           mod_rm: ModRM[mod: Mod11, reg: right_reg, rm: left_reg],
         )
+      # TEST r/m64, r64 (Mod 11: reg)
+      in [Symbol => left_reg, Symbol => right_reg] if r64?(left_reg) && r64?(right_reg)
+        # REX.W + 85 /r
+        # MR: Operand 1: ModRM:r/m (r), Operand 2: ModRM:reg (r)
+        insn(
+          prefix: REX_W,
+          opcode: 0x85,
+          mod_rm: ModRM[mod: Mod11, reg: right_reg, rm: left_reg],
+        )
       else
         raise NotImplementedError, "test: not-implemented operands: #{left.inspect}, #{right.inspect}"
       end
-- 
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