last_instruction
struct instruction *insn = last_instruction(bb->insns);
br = last_instruction(source->insns);
insn = last_instruction(target->insns);
struct instruction *br = last_instruction(bb->insns);
struct instruction *insn = last_instruction(bb->insns);
struct instruction *br = last_instruction(bb->insns);
insn = last_instruction(bb->insns);
br = last_instruction(source->insns);
insn = last_instruction(bb->insns);