* **ALL** when set, all branch conditional tests must pass in order for
the branch to succeed. When clear, it is the first sequentially
encountered successful test that causes the branch to succeed.
+ This is identical behaviour to how programming languages perform
+ early-exit on Boolean Logic chains.
* **VLI** VLSET is identical to Data-dependent Fail-First mode.
In VLSET mode, VL is set equal (truncated) to the first point
where, assuming Conditions are tested sequentially, the branch succeeds