These aren't really packed instructions, so the default
op_sel_hi should be 0 since this indicates a conversion.
The operand types are scalar values that behave similar
to an f16 scalar that may be converted to f32.
Doesn't change the default printing for op_sel_hi, just
the parsing.
Is there a script to update test/MC/AMDGPU/gfx9_asm_all.s? I got tired of manually updating all of the cases in it so it fails now.
unused