------- Additional Comments From dank at kegel dot com 2005-06-17 00:59 ------- We're learning more about this bug. Anthony Danalis has boiled down the testcase much further; I'll attach the reduced testcase as foo4.i.
It looks like it shows up if your /proc/cpuinfo says vendor_id : GenuineIntel cpu family : 15 model : 2 model name : Intel(R) Pentium(R) 4 CPU 2.80GHz stepping : 9 cpu MHz : 2793.051 cache size : 512 KB but not if your /proc/cpuinfo says vendor_id : GenuineIntel cpu family : 15 model : 4 model name : Intel(R) Pentium(R) 4 CPU 3.20GHz stepping : 1 cpu MHz : 3200.255 cache size : 1024 KB But here's the fun part: on the newer CPU with the bigger cache, gcc-2.95.3 was just as slow as gcc-3.4.3/gcc-4.0.0. Go figure. We'll add more details once we've got more info. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19923
