Related: D40552, D33128
You can drop -show-encoding from this as you're not testing the encoding.
Deleted -show-encoding from test
BTW, I don't have commit access.
@arsenm please commit
There is a test failure with this. This seems to do the wrong thing when there are subtarget differences with the instruction.
Failing test test/MC/AMDGPU/vop1-gfx9-err.s
I fixed the test, but the errors are still not great. They weren't great before, so it is only tangentially related.