https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66123
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> --- Or rather Index: tree-ssa-dom.c =================================================================== --- tree-ssa-dom.c (revision 223044) +++ tree-ssa-dom.c (working copy) @@ -2918,6 +2918,8 @@ propagate_rhs_into_lhs (gimple stmt, tre { basic_block bb = gimple_bb (use_stmt); edge te = find_taken_edge (bb, val); + if (te) + { edge_iterator ei; edge e; gimple_stmt_iterator gsi; @@ -2961,6 +2963,7 @@ propagate_rhs_into_lhs (gimple stmt, tre te->flags |= EDGE_FALLTHRU; if (te->probability > REG_BR_PROB_BASE) te->probability = REG_BR_PROB_BASE; + } } } } if computed goto removal should work.