diff options
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index dbece90..a379e7e 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -3655,6 +3655,27 @@ handle_rhs_call (tree rhs) } } +/* For non-IPA mode, generate constraints necessary for a call + that returns a pointer and assigns it to LHS. This simply makes + the LHS point to anything. */ + +static void +handle_lhs_call (tree lhs) +{ + VEC(ce_s, heap) *lhsc = NULL; + struct constraint_expr rhsc; + unsigned int j; + struct constraint_expr *lhsp; + + rhsc.var = anything_id; + rhsc.offset = 0; + rhsc.type = ADDRESSOF; + get_constraint_for (lhs, &lhsc); + for (j = 0; VEC_iterate (ce_s, lhsc, j, lhsp); j++) + process_constraint_1 (new_constraint (*lhsp, rhsc), true); + VEC_free (ce_s, heap, lhsc); +} + /* Walk statement T setting up aliasing constraints according to the references found in T. This function is the main part of the constraint builder. AI points to auxiliary alias information used @@ -3726,7 +3747,11 @@ find_func_aliases (tree origt) if (!in_ipa_mode) { if (TREE_CODE (t) == GIMPLE_MODIFY_STMT) - handle_rhs_call (GIMPLE_STMT_OPERAND (t, 1)); + { + handle_rhs_call (GIMPLE_STMT_OPERAND (t, 1)); + if (POINTER_TYPE_P (TREE_TYPE (GIMPLE_STMT_OPERAND (t, 1)))) + handle_lhs_call (GIMPLE_STMT_OPERAND (t, 0)); + } else handle_rhs_call (t); } |