Hi, I'm trying to figure out what optimizations have actually been performed by g++ on my matrix multiplication code, I was looking for such an flag of g++, but seems could not find one when I read g++'s man page, may I ask is there really a flag in g++ that can provide a list of optimization done on my code? I found that xlC could provide a list of optimized code resulting from only loop transformations, which is very helpful when analyzing performance. Thanks, Yue
