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-rw-r--r--test/arch/x86/arch.py8
1 files changed, 8 insertions, 0 deletions
diff --git a/test/arch/x86/arch.py b/test/arch/x86/arch.py
index 5721d72a..7d6260a2 100644
--- a/test/arch/x86/arch.py
+++ b/test/arch/x86/arch.py
@@ -832,6 +832,14 @@ reg_tests = [
      "0fb000"),
     (m32, "00000000    CMPXCHG    DWORD PTR [EAX], EAX",
      "0fb100"),
+    (m16, "00000000    CMPXCHG8B  QWORD PTR [SI+0x24]",
+     "0fc74c24"),
+    (m32, "00000000    CMPXCHG8B  QWORD PTR [ESP+0x8]",
+     "0fc74c2408"),
+    (m64, "00000000    CMPXCHG8B  QWORD PTR [RSP+0x8]",
+     "0fc74c2408"),
+    (m64, "00000000    CMPXCHG16B QWORD PTR [RSP+0x8]",
+     "480fc74c2408"),
 
     (m32, "00000000    CDQ",
      "99"),