By giving a meaning to particular control-flow patterns in this way, we avoid the need to explicitly model the legacy processor’s instruction counter =-=[12]-=-. The next pattern consists of a basic block S, labelled by ℓ, which is followed by a conditional branch ‘BRGT’ to ℓ...
Generally a programmer would develop a new program using psuedo code representing the meaning of each instruction, which makes it easier to keep track of the behaviour of an evolving program. Even if this psuedo code directly matches the machine code, it introduces a valuable new flexibility that...
The other method of assigning registers is to copy the register number from a past variable. This is useful in some situations. Sometimes the meaning a register changes and the variable name is no longer accurate. One way to handle this is to "rename" the existing variable however this can ...