https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103237
Martin Liška <marxin at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |alan.hayward at arm dot com --- Comment #6 from Martin Liška <marxin at gcc dot gnu.org> --- (In reply to Richard Biener from comment #5) > And the following fails with GCC 9 and 7 as well (using SSE vectorization). > > int g1; > unsigned int g2 = 4294967295U; > static void __attribute__((noipa)) func_1() > { > int *l_1 = &g1; > for (int g3a = 0; g3a != 4; g3a++) > for (int l_2 = 0; l_2 <= 3; l_2++) > { > unsigned int *l_3 = &g2; > *l_1 = *l_3 ^= 1; > } > } > int main() > { > func_1(); > if (g1 != -1) > __builtin_abort (); > return 0; > } This started to fail with r7-1219-gb28ead45fe630b9e.