diff options
Diffstat (limited to 'gcc/ipa-modref.cc')
| -rw-r--r-- | gcc/ipa-modref.cc | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/gcc/ipa-modref.cc b/gcc/ipa-modref.cc index acfd7d80ff8..556816ab429 100644 --- a/gcc/ipa-modref.cc +++ b/gcc/ipa-modref.cc @@ -5281,6 +5281,29 @@ ipa_merge_modref_summary_after_inlining (cgraph_edge *edge) if (!ignore_stores) to_info_lto->stores->collapse (); } + /* Merge side effects and non-determinism. + PURE/CONST flags makes functions deterministic and if there is + no LOOPING_CONST_OR_PURE they also have no side effects. */ + if (!(flags & (ECF_CONST | ECF_NOVOPS | ECF_PURE)) + || (flags & ECF_LOOPING_CONST_OR_PURE)) + { + if (to_info) + { + if (!callee_info || callee_info->side_effects) + to_info->side_effects = true; + if ((!callee_info || callee_info->nondeterministic) + && !ignore_nondeterminism_p (edge->caller->decl, flags)) + to_info->nondeterministic = true; + } + if (to_info_lto) + { + if (!callee_info_lto || callee_info_lto->side_effects) + to_info_lto->side_effects = true; + if ((!callee_info_lto || callee_info_lto->nondeterministic) + && !ignore_nondeterminism_p (edge->caller->decl, flags)) + to_info_lto->nondeterministic = true; + } + } if (callee_info || callee_info_lto) { auto_vec <modref_parm_map, 32> parm_map; |