Hi ali, -march is arch (mips/arm) -mtune(specifc to core like 34kc etc) thanks On Tue, Feb 8, 2011 at 2:13 PM, ali hagigat <hagigatali@xxxxxxxxx> wrote: > Why two separate options have been considered for gcc, -mtune and > -march? I wonder if anybody can give an example application of using > these options while they are different. > By -mtune the code is optimized for one specific processor, what does > this optimization mean? gcc changes the assembly instructions > specified by -march and will turn them into the processor specified by > -mtune? > So why do we need -mtune? We can compile by -march from the beginning. >
