------- Comment #1 from pinskia at gcc dot gnu dot org 2008-12-31 18:33 -------
The inner loop on the trunk looks like:
.L15:
movl 848(%esp,%eax,4), %edx
.L4:
movl 448(%esp,%eax,4), %ecx
xorl %ebx, %ebx
addl %ecx, %esi
adcl %ebx, %edi
xorl %ecx, %ecx
addl %edx, %esi
adcl %ecx, %edi
movl %esi, 48(%esp,%eax,4)
incl %eax
movl %edi, %esi
xorl %edi, %edi
cmpl $100, %eax
jne .L15
Which is a lot better. This was improved by the new register allocator on the
trunk. Going back to the old one on the trunk, gives what 4.3 gave.
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Keywords| |missed-optimization, ra
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33717
