prev_insn_same_sec
struct instruction *prev = prev_insn_same_sec(file, insn);
for (insn = prev_insn_same_sec(file, insn); \
insn = prev_insn_same_sec(file, insn))
prev_insn = prev_insn_same_sec(file, insn);
for (prev = prev_insn_same_sec(file, insn);
prev = prev_insn_same_sec(file, prev)) {
prev_insn = prev_insn_same_sec(file, insn);