Comment # 6 on bug 65310 from Ilia Mirkin

Please provide repro steps. I'm inclined to believe this is a problem in the
environment, and not a core gcc bug. But those are some trippy optimization
flags, so who knows. Be sure to specify the platform you're building for (given
the sse2 flag, x86 or x86_64... but which one... I guess x86 since x86_64
implies sse2).

If you can reproduce this by just running a single gcc command (like the one
you pasted, but figure out the actual gcc invocation), you should file a gcc
bug too.