aparna@xxxxxxxxxxxxxx writes: > pls can any one tell me, why this "for" loop is used > > "for (insn = PREV_INSN (insn); insn && !INSN_P (insn);insn = PREV_INSN > (insn));" > > > IN > function: live_in() > file Name: ra-build.c It's walking the insn chain backward to find the next real insn. ra-build.c was removed back in 2005, before the gcc 4.0 release, by the way. Ian
