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| author | Léo Gourdin <leo.gourdin@univ-grenoble-alpes.fr> | 2021-05-24 10:07:52 +0200 |
|---|---|---|
| committer | Léo Gourdin <leo.gourdin@univ-grenoble-alpes.fr> | 2021-05-24 10:07:52 +0200 |
| commit | 0efe7783c50d72858352fda93d30e0f52792d658 (patch) | |
| tree | cba55c0122b0260000d85278c6b1a46b6d30b202 /backend | |
| parent | 30e41117b57ab20beb1876e38c26dbddc5a58dfb (diff) | |
| download | compcert-kvx-0efe7783c50d72858352fda93d30e0f52792d658.tar.gz compcert-kvx-0efe7783c50d72858352fda93d30e0f52792d658.zip | |
Moving common tools, adding liveness input/output information to BTL generation oracle
Diffstat (limited to 'backend')
| -rw-r--r-- | backend/Duplicateaux.ml | 2 | ||||
| -rw-r--r-- | backend/LICMaux.ml | 2 | ||||
| -rw-r--r-- | backend/RTLcommonaux.ml (renamed from backend/AuxTools.ml) | 37 |
3 files changed, 39 insertions, 2 deletions
diff --git a/backend/Duplicateaux.ml b/backend/Duplicateaux.ml index e8e60a4f..8ca6c6ab 100644 --- a/backend/Duplicateaux.ml +++ b/backend/Duplicateaux.ml @@ -23,7 +23,7 @@ open RTL open Maps open Camlcoq open DebugPrint -open AuxTools +open RTLcommonaux let stats_oc = ref None diff --git a/backend/LICMaux.ml b/backend/LICMaux.ml index df609505..82e4629f 100644 --- a/backend/LICMaux.ml +++ b/backend/LICMaux.ml @@ -17,7 +17,7 @@ open Kildall;; open HashedSet;; open Inject;; open DebugPrint;; -open AuxTools;; +open RTLcommonaux;; type reg = P.t;; diff --git a/backend/AuxTools.ml b/backend/RTLcommonaux.ml index 1e334524..2334dfee 100644 --- a/backend/AuxTools.ml +++ b/backend/RTLcommonaux.ml @@ -1,6 +1,9 @@ open RTL open Maps open Camlcoq +open Registers +open Kildall +open Lattice let p2i r = P.to_int r @@ -50,3 +53,37 @@ let get_join_points code entry = | [pc] -> traverse pc | pc :: l -> traverse pc; traverse_succs l in traverse entry; !reached_twice + +let transfer f pc after = let open Liveness in + match PTree.get pc f.fn_code with + | Some i -> + (match i with + | Inop _ -> after + | Iop (_, args, res, _) -> + reg_list_live args (Regset.remove res after) + | Iload (_, _, _, args, dst, _) -> + reg_list_live args (Regset.remove dst after) + | Istore (_, _, args, src, _) -> + reg_list_live args (Regset.add src after) + | Icall (_, ros, args, res, _) -> + reg_list_live args (reg_sum_live ros (Regset.remove res after)) + | Itailcall (_, ros, args) -> + reg_list_live args (reg_sum_live ros Regset.empty) + | Ibuiltin (_, args, res, _) -> + reg_list_live (AST.params_of_builtin_args args) + (reg_list_dead (AST.params_of_builtin_res res) after) + | Icond (_, args, _, _, _) -> + reg_list_live args after + | Ijumptable (arg, _) -> + Regset.add arg after + | Ireturn optarg -> + reg_option_live optarg Regset.empty) + | None -> Regset.empty + +module RegsetLat = LFSet(Regset) + +module DS = Backward_Dataflow_Solver(RegsetLat)(NodeSetBackward) + +let analyze f = + let liveouts = get_some @@ DS.fixpoint f.fn_code successors_instr (transfer f) in + PTree.map (fun n _ -> let lo = PMap.get n liveouts in transfer f n lo) f.fn_code |