diff options
Diffstat (limited to 'compiler/FunsAnalysis.ml')
| -rw-r--r-- | compiler/FunsAnalysis.ml | 28 |
1 files changed, 17 insertions, 11 deletions
diff --git a/compiler/FunsAnalysis.ml b/compiler/FunsAnalysis.ml index 3ba5d35d..9eac3e6f 100644 --- a/compiler/FunsAnalysis.ml +++ b/compiler/FunsAnalysis.ml @@ -57,16 +57,16 @@ let analyze_module (m : crate) (funs_map : fun_decl FunDeclId.Map.t) let stateful = ref false in let can_diverge = ref false in let is_rec = ref false in - let is_builtin_non_fallible_group = ref false in + let group_has_builtin_info = ref false in (* We have some specialized knowledge of some library functions; we don't have any more custom treatment than this, and these functions can be modeled suitably in Primitives.fst, rather than special-casing for them all the way. *) - let is_builtin_non_fallible (f : fun_decl) : bool = + let get_builtin_info (f : fun_decl) : ExtractBuiltin.effect_info option = let open ExtractBuiltin in let name = name_to_simple_name f.name in - SimpleNameSet.mem name builtin_non_fallible_funs_set + SimpleNameMap.find_opt name builtin_fun_effects_map in (* JP: Why not use a reduce visitor here with a tuple of the values to be @@ -119,16 +119,21 @@ let analyze_module (m : crate) (funs_map : fun_decl FunDeclId.Map.t) in (* Sanity check: global bodies don't contain stateful calls *) assert ((not f.is_global_decl_body) || not !stateful); - let is_builtin_non_fallible = is_builtin_non_fallible f in - is_builtin_non_fallible_group := - !is_builtin_non_fallible_group || is_builtin_non_fallible; + let builtin_info = get_builtin_info f in + let has_builtin_info = builtin_info <> None in + group_has_builtin_info := !group_has_builtin_info || has_builtin_info; match f.body with | None -> - obj#may_fail (not is_builtin_non_fallible); + let info_can_fail, info_stateful = + match builtin_info with + | None -> (true, false) + | Some { can_fail; stateful } -> (can_fail, stateful) + in + obj#may_fail info_can_fail; stateful := (not f.is_global_decl_body) && use_state - && not is_builtin_non_fallible + && not (has_builtin_info && not info_stateful) | Some body -> obj#visit_statement () body.body in List.iter visit_fun d; @@ -136,7 +141,7 @@ let analyze_module (m : crate) (funs_map : fun_decl FunDeclId.Map.t) * groups containing globals contain exactly one declaration *) let is_global_decl_body = List.exists (fun f -> f.is_global_decl_body) d in assert ((not is_global_decl_body) || List.length d = 1); - assert ((not !is_builtin_non_fallible_group) || List.length d = 1); + assert ((not !group_has_builtin_info) || List.length d = 1); (* We ignore on purpose functions that cannot fail and consider they *can* * fail: the result of the analysis is not used yet to adjust the translation * so that the functions which syntactically can't fail don't use an error monad. @@ -144,8 +149,9 @@ let analyze_module (m : crate) (funs_map : fun_decl FunDeclId.Map.t) * builtin functions which are marked as non-fallible. * *) can_fail := - ((not is_global_decl_body) && not !is_builtin_non_fallible_group) - || !can_fail; + if is_global_decl_body then !can_fail + else if !group_has_builtin_info then !can_fail + else true; { can_fail = !can_fail; stateful = !stateful; |