LLVM #3 — Control Flow

LLVM has added control flow to Kaleidoscope, allowing for if/then/else statements. This is achieved through basic blocks and a Phi node. Basic blocks ensure that the optimiser can reason about the code flow, while the Phi node handles the merging of values from different branches. This is necessary for proper control-flow and optimisation. Engineers should understand the importance of basic blocks and the Phi node in control flow.