Re: gcc compile-time performance

[Richard Henderson <rth at redhat dot com>]

On Mon, May 20, 2002 at 02:34:12PM +0100, Richard Earnshaw wrote:
> Here's some more relatively low hanging fruit to pick.  bitmap_find_bit is 
> probably the most-called function in the compiler (ok, it is inlined, but 
> it is still effectively called).  This cuts the execution time of the 
> function by about 45% (according to gprof).  It simply notes that if head->
> current is the element we want, we don't have to go and do a lot of 
> grunging to reposition the current element to itself!

This is entirely correct.  Are you going to check it in?


r~