http://bugs.winehq.org/show_bug.cgi?id=22385
--- Comment #2 from Artem S. Tashkinov t.artem@mailcity.com 2010-04-17 04:22:28 --- For -march=native on Intel Core CPUs GCC 4.4.3 uses the following options:
-march=core2 -mcx16 -msahf -maes -mpclmul -mpopcnt -msse4.2 --param l1-cache-size=32 --param l1-cache-line-size=64 --param l2-cache-size=256 -mtune=core2
So in fact, this bug affects all Intel Core 2 and newer CPUs.