--- /dev/null
+#source: ../x86-64-io.s
+#objdump: -dwMintel
+#name: x86-64 (ILP32) rex.W in/out (Intel disassembly)
+
+.*: +file format .*
+
+Disassembly of section .text:
+
+0+000 <_in>:
+ 0: 48 ed rex.W in eax,dx
+ 2: 66 48 ed data32 rex.W in eax,dx
+
+0+005 <_out>:
+ 5: 48 ef rex.W out dx,eax
+ 7: 66 48 ef data32 rex.W out dx,eax
+
+0+00a <_ins>:
+ a: 48 6d rex.W ins DWORD PTR es:\[rdi\],dx
+ c: 66 48 6d data32 rex.W ins DWORD PTR es:\[rdi\],dx
+
+0+00f <_outs>:
+ f: 48 6f rex.W outs dx,DWORD PTR ds:\[rsi\]
+ 11: 66 48 6f data32 rex.W outs dx,DWORD PTR ds:\[rsi\]
+#pass