http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59371
Richard Biener <rguenth at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |missed-optimization Target Milestone|--- |4.8.3 Summary|Performance regression in |[4.8/4.9 Regression] |GCC 4.8 and later versions. |Performance regression in | |GCC 4.8 and later versions. --- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> --- The IVOPTs dump looks different on x86_64, it looks like 4.7 was able to do a better job here. Can you provide a runnable testcase so we can see if x86_64 regressed in speed as well?