naveen yadav wrote: > we have observed few points, > > 1. In Some cases size of .o file increase in thumb mode. when i > dissamble it i found all instruction are 16 bit.In what cases size increases? Did you not find out by looking at gcc's output? What did you see? > 2. How much size will be reduce as compared with ARM mode.? > 3. Code reduction depends on what ? > > 4. How much performance effect with Arm and Thumb mode. See www.arm.com/pdfs/Thumb-2CoreTechnologyWhitepaper-Final4.pdf Andrew.