https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80069
--- Comment #2 from Manuel Lauss <manuel.lauss at googlemail dot com> --- Created attachment 40987 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=40987&action=edit condensed preprocessed source condensed the source a bit, narrowed it down to this: x86_64-pc-linux-gnu-gcc -O3 -fgraphite-identity -c nellymoser.i nellymoser.i: In function 'ff_nelly_get_sample_bits': nellymoser.i:40:6: internal compiler error: in outer_projection_mupa, at graphite-sese-to-poly.c:1176 void ff_nelly_get_sample_bits(const float *buf, int *bits) ^~~~~~~~~~~~~~~~~~~~~~~~ Please submit a full bug report, with preprocessed source if appropriate. -O2 -fgraphite-identity works, -O3 alone also works.