for analysing a Vector of Condition Register Fields
and reducing it to one
single Condition Register Field.
-* **Pack/Unpack Mode**.
- Like VSX `vpack` and `vunpack` the source and destination
- elements are reordered.
Predicate-result does not make any sense because
when Rc=1 a co-result is created (a CR Field). Testing the co-result
|sz |SNZ| 0 RG | 0 | dz / | simple mode |
|sz |SNZ| 0 RG | 1 | 0 / | scalar reduce mode (mapreduce), SUBVL=1 |
|zz |SNZ| 0 RG | 1 | SVM 0 | subvector reduce mode, SUBVL>1 |
+|zz |SNZ| 0 RG | 1 | / 1 | reserved |
|zz |SNZ| 1 VLI | inv | CR-bit | Ffirst 3-bit mode |
|sz |SNZ| 1 VLI | inv | dz / | Ffirst 5-bit mode |