Dan,
> Is there a performance difference between the movl + movl and
> pushl code sequences?
Not in this example, but movl is faster in some circumstances than pushl. A
sequence of pushl has an implicit dependency chain on %esp, as it changes after
each pushl, whereas a sequence of movl cou
On Tue, Aug 23, 2005 at 11:40:16AM -0700, Dan Nicolaescu wrote:
> Is there a performance difference between the movl + movl and pushl
> code sequences?
In this case, no.
> If not maybe then gcc should generate pushl for -O2
> too because it is smaller code.
It's not quite as simple as you make o
