Mark Mitchell wrote:
Vladimir N. Makarov wrote:
Here is the comparison of 4.1 branch and 4.2 branch. In brief, 4.2
has 0.47% better performance in SPECInt2000 and 2.2% better
performance in SPECFP2000.
Thanks!
I assume that is with the aliasing safety patches turned on, i.e.,
current state of the 4.2 branch? Are you able to try reverting the
aliasing patches to see how much of an impact they have on Itanium? It
would be interesting to know how that compares with the 4% on IA32.
Yes, that is the current state of 4.1 and 4.2 branches (as of
yesterday). I don't think we will see a change with the reverted
alaising patches for itanium because conservative aliasing most probably
will be compensated by itanium hardware (itanium speculation insn
support was added for 4.2).