Hi,

On Thu, Aug 20, 2015 at 09:31:07AM +0200, Dominik 'Rathann' Mierzejewski wrote:

/builddir/build/BUILD/gromacs-5.1/src/gromacs/simd/impl_ibm_vsx/impl_ibm_vsx.h:452:80: error: 'asm' operand has impossible constraints
     __asm__ ("xvcvsxwdp %0,%1" : "=ww" (x) : "ww" ((__vector signed int) (ix)));
                                                                                ^

Please file a bug report; see  http://gcc.gnu.org/bugs/  .
Thanks!

(Btw, you forgot the most important piece of information -- the GCC
version).

Segher