http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47892
--- Comment #1 from jeremysalwen at gmail dot com 2011-02-25 10:19:58 UTC --- Note, even when switching to floating point constants: #define PIO6 0.523598776f #define SA5 2.74201854577e-06f #define SA4 -1.98410347969e-04f #define SA3 8.33333320429e-03f #define SA2 -1.66666666666e-01f and adding the option -fno-tree-pre it still won't vectorize