https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66657
--- Comment #3 from Kenneth Almquist <kalmquist1 at hotmail dot com> --- (In reply to Andrew Pinski from comment #2) > What are you trying to do with the assembly after the fact? In this particular case, I wanted to look at it for two reasons: 1) To determine which functions were being inlined. 2) To identify errant calls to printf and puts. When compiled to run in background mode, my program should send all messages to the log rather than stdout/stderr, so calls to printf/puts that the compiler doesn't discard as unreachable represent program bugs. Gcc has had the -S option for essentially forever, and I've probably used it more times and for more reasons than I can remember at this point.