[m-rev.] diff: break up simplify_procs

Zoltan Somogyi zs at csse.unimelb.edu.au
Fri Jun 6 18:03:43 AEST 2008


compiler/simplify.m:
	Break simplify_procs into two predicates: one to loop over all
	procedures, and one to process one procedure. This is to allow
	easier debugging of simplify.m, such as my recent fix to reenable
	excess assignment optimization.

Zoltan.

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Index: compiler/simplify.m
===================================================================
RCS file: /home/mercury/mercury1/repository/mercury/compiler/simplify.m,v
retrieving revision 1.231
diff -u -b -r1.231 simplify.m
--- compiler/simplify.m	29 May 2008 07:24:12 -0000	1.231
+++ compiler/simplify.m	29 May 2008 07:26:15 -0000
@@ -311,21 +311,32 @@
         Simplifications = Simplifications0
     ),
     ErrorSpecs0 = init_error_spec_accumulator,
-    simplify_procs(Simplifications, PredId, ProcIds, !ModuleInfo, !PredInfo,
-        ErrorSpecs0, ErrorSpecs),
+    simplify_pred_procs(Simplifications, PredId, ProcIds, !ModuleInfo,
+        !PredInfo, ErrorSpecs0, ErrorSpecs),
     module_info_get_globals(!.ModuleInfo, Globals),
     SpecsList = error_spec_accumulator_to_list(ErrorSpecs),
     !:Specs = SpecsList ++ !.Specs,
     globals.lookup_bool_option(Globals, detailed_statistics, Statistics),
     maybe_report_stats(Statistics, !IO).
 
-:- pred simplify_procs(simplifications::in, pred_id::in,
+:- pred simplify_pred_procs(simplifications::in, pred_id::in,
     list(proc_id)::in, module_info::in, module_info::out,
     pred_info::in, pred_info::out,
     error_spec_accumulator::in, error_spec_accumulator::out) is det.
 
-simplify_procs(_, _, [], !ModuleInfo, !PredInfo, !ErrorSpecs).
-simplify_procs(Simplifications, PredId, [ProcId | ProcIds], !ModuleInfo,
+simplify_pred_procs(_, _, [], !ModuleInfo, !PredInfo, !ErrorSpecs).
+simplify_pred_procs(Simplifications, PredId, [ProcId | ProcIds], !ModuleInfo,
+        !PredInfo, !ErrorSpecs) :-
+    simplify_pred_proc(Simplifications, PredId, ProcId, !ModuleInfo,
+        !PredInfo, !ErrorSpecs),
+    simplify_pred_procs(Simplifications, PredId, ProcIds, !ModuleInfo,
+        !PredInfo, !ErrorSpecs).
+
+:- pred simplify_pred_proc(simplifications::in, pred_id::in, proc_id::in,
+    module_info::in, module_info::out, pred_info::in, pred_info::out,
+    error_spec_accumulator::in, error_spec_accumulator::out) is det.
+
+simplify_pred_proc(Simplifications, PredId, ProcId, !ModuleInfo,
         !PredInfo, !ErrorSpecs) :-
     pred_info_get_procedures(!.PredInfo, ProcTable0),
     map.lookup(ProcTable0, ProcId, ProcInfo0),
@@ -352,9 +363,7 @@
     ),
     map.det_update(ProcTable0, ProcId, ProcInfo, ProcTable),
     pred_info_set_procedures(ProcTable, !PredInfo),
-    accumulate_error_specs_for_proc(ProcSpecs, !ErrorSpecs),
-    simplify_procs(Simplifications, PredId, ProcIds, !ModuleInfo, !PredInfo,
-        !ErrorSpecs).
+    accumulate_error_specs_for_proc(ProcSpecs, !ErrorSpecs).
 
 simplify_proc(Simplifications, PredId, ProcId, !ModuleInfo, !ProcInfo, !IO)  :-
     write_pred_progress_message("% Simplifying ", PredId, !.ModuleInfo, !IO),
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