------- Comment #1 from pinskia at gcc dot gnu dot org 2006-11-30 18:38 -------
Here is the loop that is generated:
.L4:
flds (%ebx,%edx,4)
leal 1(%edx), %eax
fmul %st(1), %st
fdivs (%ecx,%edx,4)
fsqrt
fstps (%esi,%edx,4)
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 2(%edx), %eax
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 3(%edx), %eax
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 4(%edx), %eax
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 5(%edx), %eax
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 6(%edx), %eax
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
leal 7(%edx), %eax
addl $8, %edx
cmpl %edi, %edx
flds (%ebx,%eax,4)
fmul %st(1), %st
fdivs (%ecx,%eax,4)
fsqrt
fstps (%esi,%eax,4)
jne .L4
There are some issues with leal's that should not be there but I think what ICC
does is only calculates CS[1] instead of all of CS[i].
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=30032
