http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56522
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Target| |x86_64-*-* --- Comment #9 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-08 15:28:29 UTC --- I don't see any substantial differences in code-generation (register allocation and some basic-block order differences appear), and I cannot reproduce a slowdown. Flags as you cited: ./xgcc -B. -o t t.c -O3 -march=corei7 -fomit-frame-pointer -funroll-loops -ffast-math -static