Messages in this thread | | | Date | Wed, 13 Aug 2008 16:21:52 -0400 | From | Steven Rostedt <> | Subject | Re: Efficient x86 and x86_64 NOP microbenchmarks |
| |
Andi Kleen wrote: > On Wed, Aug 13, 2008 at 04:00:37PM -0400, Steven Rostedt wrote: > >>> Now the numbers have shown that just by not using frame pointer ( >>> -pg right now implies frame pointer) you can get more benefit >>> than what you lose from using non optimal nops. >>> >>> >> No, I can easily make a patch that does not use frame pointers but still >> > > Not without patching gcc. Try it. The patch is not very difficult and i did > it here, but it needs a patch. >
OK, I admit you are right ;-)
I got the error message:
gcc: -pg and -fomit-frame-pointer are incompatible
-- Steve
| |