Hello All, I applied the recent patches to the 7/23 snapshot, and am still seeing some 387 to sse moves. In particular, in SpecFP's 177.mesa (matrix.c), I'm seeing fld1's feeding moves to sse registers.
Compiled via: gcc -O3 -march=k8 -mfpmath=sse matrix.c Thanks. Tony -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dale Johannesen Sent: Monday, August 01, 2005 1:53 PM To: [EMAIL PROTECTED] Cc: [EMAIL PROTECTED]; gcc@gcc.gnu.org Subject: Re: rfa (x86): 387<=>sse moves 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.
