--- /dev/null
+# Instructions that should be valid but currently fail for known reasons (e.g.
+# they aren't implemented yet).
+# This test is set up to XPASS if any instruction generates an encoding.
+#
+# FIXME: Test MIPS-III instead of MIPS64
+# RUN: not llvm-mc %s -triple=mips-unknown-linux -show-encoding -mcpu=mips64 | not FileCheck %s
+# CHECK-NOT: encoding
+# XFAIL: *
+
+ .set noat
+ ddiv $zero,$k0,$s3
+ ddivu $zero,$s0,$s1
+ div $zero,$t9,$t3
+ divu $zero,$t9,$t7
+ ehb
+ lwc3 $10,-32265($k0)
+ ssnop
+ tlbp
+ tlbr
+ tlbwi
+ tlbwr