http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48602
--- Comment #31 from Tobias Burnus <burnus at gcc dot gnu.org> 2011-04-19 06:06:44 UTC --- (In reply to comment #30) > I can not reproduce the issue with optimization issue on my linux system > x86-64. I can produce it with -m32 on Linux. Most such issues occur due to the non-IEEE rounding (excess precision) when the 387 coprocessor is used. Consequently, the issue vanishes when using: -mfpmath=sse, -ffloat-store or -fexcess-precision=standard. With x86-64 SSE is used, which does not have this issue.
