On Mon, 2007-04-23 at 19:36 +0100, Andrew Haley wrote: > > I'm using gcc 3.3.5 and as 2.15. > > > Is there a way to force such assembly code to be produced even though it > > may be unreachable ? If not should there be a way ? > > If code is unreachable, there's no way to jump to it. It's not legal > in gcc to jump into or out of an inline asm. It seems that I was looking for the 4.1.x optimization flag -freorder-blocks-and-partition that places the body of uncommon branches in a separate section and the macro __builtin_expect() that provides branch prediction hints.
