[Bug tree-optimization/59644] [4.9 Regression] r206243 miscompiles Linux kernel

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59644

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Weird, I thought the kernel is compiled even with -mno-sse, so there shouldn't
be AVX used and thus no need for realignment anywhere.  What arch is that? 
i?86 or x86_64?  Can you bisect which *.o file matters for this, and attach the
preprocessed source plus command line options?  Perhaps start with comparison
of *.o files between r206242 and r206243?  I'd be really surprised if it on the
kernel made a difference on many source files.