gistfile1.txt

#define TARGET(op) \
        L##op: \
        opcode = op; \
        case op:

void use(int);

void foo(int *p) {

  static void *targets[16] = {
   &&L0,
   &&L1,
   &&L2,
   &&L3,
   &&L4,
   &&L5,
   &&L6,
   &&L7,
   &&L8,
   &&L9,
   &&L10,
   &&L11,
   &&L12,
   &&L13,
   &&L14,
   &&L15
  };

  int opcode = 0;
  switch(*p++) {
    TARGET(0) { use (opcode); goto *targets[*p++]; }
    TARGET(1) { use (opcode); goto *targets[*p++]; }
    TARGET(2) { use (opcode); goto *targets[*p++]; }
    TARGET(3) { use (opcode); goto *targets[*p++]; }
    TARGET(4) { use (opcode); goto *targets[*p++]; }
    TARGET(5) { use (opcode); goto *targets[*p++]; }
    TARGET(6) { use (opcode); goto *targets[*p++]; }
    TARGET(7) { use (opcode); goto *targets[*p++]; }
    TARGET(8) { use (opcode); goto *targets[*p++]; }
    TARGET(9) { use (opcode); goto *targets[*p++]; }
    TARGET(10) { use (opcode); goto *targets[*p++]; }
    TARGET(11) { use (opcode); goto *targets[*p++]; }
    TARGET(12) { use (opcode); goto *targets[*p++]; }
    TARGET(13) { use (opcode); goto *targets[*p++]; }
    TARGET(14) { use (opcode); goto *targets[*p++]; }
    TARGET(15) { use (opcode); goto *targets[*p++]; }
  }
}