* stdlib/optimize.tl (basic-blocks peephole-block): When we match a branching instruction, including jend, we know that's the end of the basic block. So there is no need to splice the (rest insns) into the output; let's get rid of that. On the other hand, there is also no need to have a specific pattern match for the end of the list such as ((jmp @label)). This costs extra cycles to validate. Let's consistently match these basic-block terminating instructions using prefix patterns like ((jmp @label) . @nil)).