[Bug target/69401] gcc 5.3.0 on microblaze: internal compiler error: in gen_reg_rtx, at emit-rtl.c:1027

[thomas.petazzoni@free-electrons.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69401

--- Comment #2 from Thomas Petazzoni <thomas.petazzoni@free-electrons.com> ---
This still happens with gcc 6.1. With gcc 6.1:

 - The file can be built with no optimization, with and without -fPIC
 - The file can be built in -O2 or -O3 without -fPIC
 - The compiler aborts when either -O2 or -O3 is used in combination with -fPIC

I will attach an updated version of the pre-processed file, which can be used
with gcc 6. The previous version of flann was causing some unrelated build
failures with gcc 6.