diff --git a/test/core/atomic.wast b/test/core/atomic.wast
index 9f3cd65d..ac508adb 100644
--- a/test/core/atomic.wast
+++ b/test/core/atomic.wast
@@ -322,22 +322,42 @@
 (assert_return (invoke "i32.atomic.rmw8.cmpxchg_u" (i32.const 0) (i32.const 0) (i32.const 0xcdcdcdcd)) (i32.const 0x11))
 (assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
 
+(invoke "init" (i64.const 0x1111111111111111))
+(assert_return (invoke "i32.atomic.rmw8.cmpxchg_u" (i32.const 0) (i32.const 0x11111111) (i32.const 0xcdcdcdcd)) (i32.const 0x11))
+(assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
+
 (invoke "init" (i64.const 0x1111111111111111))
 (assert_return (invoke "i32.atomic.rmw16.cmpxchg_u" (i32.const 0) (i32.const 0) (i32.const 0xcafecafe)) (i32.const 0x1111))
 (assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
 
+(invoke "init" (i64.const 0x1111111111111111))
+(assert_return (invoke "i32.atomic.rmw16.cmpxchg_u" (i32.const 0) (i32.const 0x11111111) (i32.const 0xcafecafe)) (i32.const 0x1111))
+(assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
+
 (invoke "init" (i64.const 0x1111111111111111))
 (assert_return (invoke "i64.atomic.rmw8.cmpxchg_u" (i32.const 0) (i64.const 0) (i64.const 0x4242424242424242)) (i64.const 0x11))
 (assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
 
+(invoke "init" (i64.const 0x1111111111111111))
+(assert_return (invoke "i64.atomic.rmw8.cmpxchg_u" (i32.const 0) (i64.const 0x1111111111111111) (i64.const 0x4242424242424242)) (i64.const 0x11))
+(assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
+
 (invoke "init" (i64.const 0x1111111111111111))
 (assert_return (invoke "i64.atomic.rmw16.cmpxchg_u" (i32.const 0) (i64.const 0) (i64.const 0xbeefbeefbeefbeef)) (i64.const 0x1111))
 (assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
 
+(invoke "init" (i64.const 0x1111111111111111))
+(assert_return (invoke "i64.atomic.rmw16.cmpxchg_u" (i32.const 0) (i64.const 0x1111111111111111) (i64.const 0xbeefbeefbeefbeef)) (i64.const 0x1111))
+(assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
+
 (invoke "init" (i64.const 0x1111111111111111))
 (assert_return (invoke "i64.atomic.rmw32.cmpxchg_u" (i32.const 0) (i64.const 0) (i64.const 0xcabba6e5cabba6e5)) (i64.const 0x11111111))
 (assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
 
+(invoke "init" (i64.const 0x1111111111111111))
+(assert_return (invoke "i64.atomic.rmw32.cmpxchg_u" (i32.const 0) (i64.const 0x1111111111111111) (i64.const 0xcabba6e5cabba6e5)) (i64.const 0x11111111))
+(assert_return (invoke "i64.atomic.load" (i32.const 0)) (i64.const 0x1111111111111111))
+
 ;; *.atomic.rmw*.cmpxchg (compare true)
 
 (invoke "init" (i64.const 0x1111111111111111))