aco: disable mul(cndmask(0, 1, b), a) optimization sometimes
This optimization doesn't work for SDWA or DPP multiplications and we can't do it if denormal flushing is required because v_cndmask_b32
doesn't do that and we can't do it if we can't assume operands are finite because 0.0 * inf
is NaN
, not 0
.