...

We get

   ldd [%o0],%f8   ! load f8 for first itern
L313:
   fmuld %f6,%f8,%f2
   ldd [%o1],%f4      
   ldd [%o0+8],%f8 ! load f8 for next itern
   add %o1,8,%o1     
   faddd %f2,%f4,%f2      
   add %o0,8,%o0     
   cmp %o0,%o2
   blu L313
   std %f2,[%o1-8]

• Note that work is being done concurrently on both iteration j and on iteration j+1.
• This idea is called ``software pipelining''. It is possible to spread a loop over several iterations -- with ever more complicated run-up and run-down code.
• 33.2 seconds (7.53 MFLOPS).