VOPC as a part of VOP3B fails.

[sayan1an]

v_cmp_lt_i32 s[5:6], v0, 48 // 00000028: D1020002 00016100

The above instruction produce invalid output. Please note that the above instruction is in VOP3b format. The instruction can be emulated as follows:

V_MOV_B32 v4, 48
V_CMP_LT_I32 v0, v4 // Using VOPC format
S_MOV_B64 s[5:6], vcc

[balidani]

Thanks, I'm working on this right now.

[balidani]

As a temporary solution VOPC is now only used with a VOP3b format. With the VOP3b format we have the same (and more) functionality. We might need the non-VOP3 format later for performance reasons.

I think the bigger problem is VOP2 and VOP1, I'll open an issue for those.