Re: rfa (x86): 387<=>sse moves

[Dale Johannesen]

On Jul 31, 2005, at 9:51 AM, Uros Bizjak wrote:
Hello!

With -march=pentium4 -mfpmath=sse -O2, we get an extra move for code 
like

   double d = atof(foo);
   int i = d;


       call    atof
       fstpl   -8(%ebp)
       movsd   -8(%ebp), %xmm0
       cvttsd2si       %xmm0, %eax


(This is Linux, Darwin is similar.) I think the difficulty is that for

This problem is similar to the problem, described in PR target/19398. 
There is another testcase and a small analysis in the PR that might 
help with this problem.

Thanks, that does seem relevant.  The patches so far don't fix this 
case;
I've commented the PR explaining why.