[Bug tree-optimization/33928] [4.3/4.4/4.5 Regression] 79% performance slowdown in floating-point code partially caused by r118475

2009-04-23 Thread lucier at math dot purdue dot edu
--- Comment #49 from lucier at math dot purdue dot edu 2009-04-23 15:58 --- With 4.4.0 and with mainline this code now runs in 280 ms instead of in 156 ms with 4.2.4. Since 280/156 = 1.794871794871795 I changed the subject line (the slowdown is now not completely caused by r118475).

[Bug tree-optimization/33928] [4.3/4.4/4.5 Regression] 79% performance slowdown in floating-point code partially caused by r118475

2009-04-23 Thread lucier at math dot purdue dot edu
--- Comment #50 from lucier at math dot purdue dot edu 2009-04-23 16:00 --- Created an attachment (id=17685) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=17685action=view) direct.s generated by 4.4.0 -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928

[Bug tree-optimization/33928] [4.3/4.4/4.5 Regression] 79% performance slowdown in floating-point code partially caused by r118475

2009-04-23 Thread lucier at math dot purdue dot edu
--- Comment #51 from lucier at math dot purdue dot edu 2009-04-23 16:03 --- Forgot to mention, the main loop starts at .L2947. This is on model name : Intel(R) Core(TM)2 Duo CPU E6550 @ 2.33GHz Brad -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33928