Thumb2 code size improvements

Hi, We are looking for some possible improvements and optimizations on thumb2 code size. Currently, I am running some benchmarks with compilation flag "-Os -march=armv7-a -mthumb", and hope to find some thing interesting that we can improve. Beside that, do you have some ideas on this topic? or do you have some observations on thumb2 code that we may probably improve the size?

Any thoughts on this are appreciated.

Yao