https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70729
--- Comment #36 from Yuri Rumyantsev <ysrumyan at gmail dot com> --- #c33 testcase was not tested since I have some doubts about it. Note that original problem was #pragma omp simd for (int i=0; i<S_n; i++) { float w1 = C2[S_n + i] * w; v1.v_i[i] += (int)w1; C1[S_n + i] += w1; } and we must hoist S_n out of loop to vectorize it. 2016-07-04 19:40 GMT+03:00 jakub at gcc dot gnu.org <gcc-bugzi...@gcc.gnu.org>: > https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70729 > > --- Comment #35 from Jakub Jelinek <jakub at gcc dot gnu.org> --- > Doesn't it still miscompile the #c33 testcase? > Say with __attribute__((noinline, noclone)) on baz and > int v[2048]; > > int > main () > { > v[1023] = 5; > baz (v, v + 1023, v + 1024, v + 1023); > int i; > for (i = 0; i < 1024; i++) > if (v[i] != 5 * 6 || v[1024 + i] != (i == 1023 ? 5 * 6 : 5) * 9) > __builtin_abort (); > return 0; > } > (untested)? > > -- > You are receiving this mail because: > You reported the bug.