Here's a review to optimize several byte swapping macros in sys/byteorder.h http://dan.drydog.com/reviews/6729208-bswap3/
I optimized the macros by calling the htons()/htonl()/htonll() builtin function, or with a simple unaligned assignment (x86), or (for BSWAP* on Sparc) writing a faster C macro. Here's a pretty spreadsheet chart that shows the optimization (from calling the macros in a loop) http://dan.drydog.com/reviews/6729208-bswap3-opt-chart.png On the chart, OLD = current source, NEW=this webrev. I measured on AMD64, EM64T, and sun4u boxen; times in milliseconds. Please comment by COB Wed. Sept. 3. -- This message posted from opensolaris.org
