diff options
Diffstat (limited to 'gcc/tree-ssa-structalias.c')
| -rw-r--r-- | gcc/tree-ssa-structalias.c | 34 |
1 files changed, 30 insertions, 4 deletions
diff --git a/gcc/tree-ssa-structalias.c b/gcc/tree-ssa-structalias.c index d894351a539..a379e7e2a8d 100644 --- a/gcc/tree-ssa-structalias.c +++ b/gcc/tree-ssa-structalias.c @@ -1647,6 +1647,7 @@ typedef struct equiv_class_label bitmap labels; hashval_t hashcode; } *equiv_class_label_t; +typedef const struct equiv_class_label *const_equiv_class_label_t; /* A hashtable for mapping a bitmap of labels->pointer equivalence classes. */ @@ -1661,7 +1662,7 @@ static htab_t location_equiv_class_table; static hashval_t equiv_class_label_hash (const void *p) { - const equiv_class_label_t ecl = (equiv_class_label_t) p; + const_equiv_class_label_t const ecl = (const_equiv_class_label_t) p; return ecl->hashcode; } @@ -1670,8 +1671,8 @@ equiv_class_label_hash (const void *p) static int equiv_class_label_eq (const void *p1, const void *p2) { - const equiv_class_label_t eql1 = (equiv_class_label_t) p1; - const equiv_class_label_t eql2 = (equiv_class_label_t) p2; + const_equiv_class_label_t const eql1 = (const_equiv_class_label_t) p1; + const_equiv_class_label_t const eql2 = (const_equiv_class_label_t) p2; return bitmap_equal_p (eql1->labels, eql2->labels); } @@ -3654,6 +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 @@ -3725,7 +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); } |