diff options
Diffstat (limited to 'gcc/tree-ssa-uninit.c')
| -rw-r--r-- | gcc/tree-ssa-uninit.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/gcc/tree-ssa-uninit.c b/gcc/tree-ssa-uninit.c index e8f3ff7..2cb22b7 100644 --- a/gcc/tree-ssa-uninit.c +++ b/gcc/tree-ssa-uninit.c @@ -151,7 +151,21 @@ compute_uninit_opnds_pos (gimple phi) if (TREE_CODE (op) == SSA_NAME && ssa_undefined_value_p (op) && !can_skip_redundant_opnd (op, phi)) - MASK_SET_BIT (uninit_opnds, i); + { + /* Ignore SSA_NAMEs on abnormal edges to setjmp + or nonlocal goto receiver. */ + if (cfun->has_nonlocal_label || cfun->calls_setjmp) + { + edge e = gimple_phi_arg_edge (phi, i); + if (e->flags & EDGE_ABNORMAL) + { + gimple last = last_stmt (e->src); + if (last && stmt_can_make_abnormal_goto (last)) + continue; + } + } + MASK_SET_BIT (uninit_opnds, i); + } } return uninit_opnds; } |