[gcc(refs/users/pheeck/heads/sccp)] sccp.cc created, pass added to passes.def

[Filip Kastl <pheeck@gcc.gnu.org>]

https://gcc.gnu.org/g:3d96be861227aa9ff4c1fa036eba9f98a2848dd7

commit 3d96be861227aa9ff4c1fa036eba9f98a2848dd7
Author: Filip Kastl <filip.kastl@gmail.com>
Date:   Fri Jun 10 13:34:51 2022 +0200

    sccp.cc created, pass added to passes.def

Diff:
---
 gcc/passes.def  |  1 +
 gcc/sccp.cc     | 90 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 gcc/tree-pass.h |  1 +
 3 files changed, 92 insertions(+)

diff --git a/gcc/passes.def b/gcc/passes.def
index 462e9afad61..5e102669a8d 100644
--- a/gcc/passes.def
+++ b/gcc/passes.def
@@ -77,6 +77,7 @@ along with GCC; see the file COPYING3.  If not see
       PUSH_INSERT_PASSES_WITHIN (pass_all_early_optimizations)
 	  NEXT_PASS (pass_remove_cgraph_callee_edges);
 	  NEXT_PASS (pass_early_object_sizes);
+      NEXT_PASS (pass_sccp); /* TODO Kam pass umistit */
 	  /* Don't record nonzero bits before IPA to avoid
 	     using too much memory.  */
 	  NEXT_PASS (pass_ccp, false /* nonzero_p */);
diff --git a/gcc/sccp.cc b/gcc/sccp.cc
new file mode 100644
index 00000000000..3985e5c2dab
--- /dev/null
+++ b/gcc/sccp.cc
@@ -0,0 +1,90 @@
+/* TODO Popis passu
+   Strongly connected copy propagation pass
+   Copyright (C) 2022 Free Software Foundation, Inc.
+   Contributed by Filip Kastl <filip.kastl@gmail.com>
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 3, or (at your option) any later
+version.
+
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3.  If not see
+<http://www.gnu.org/licenses/>.  */
+
+// TODO Procistit includes
+
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "backend.h"
+#include "target.h"
+#include "tree.h"
+#include "tree-pass.h"
+#include "memmodel.h"
+#include "tm_p.h"
+
+/* TODO Popisek passu  */
+
+namespace {
+
+const pass_data pass_data_adjust_alignment =
+{
+  GIMPLE_PASS, /* type */
+  "sccp", /* name */
+  OPTGROUP_NONE, /* optinfo_flags */
+  TV_NONE, /* tv_id */
+  ( PROP_cfg | PROP_ssa ), /* properties_required */
+  0, /* properties_provided */
+  0, /* properties_destroyed */
+  0, /* todo_flags_start */
+  TODO_update_ssa | TODO_cleanup_cfg, /* todo_flags_finish */
+};
+
+class pass_sccp : public gimple_opt_pass
+{
+public:
+  pass_sccp (gcc::context *ctxt)
+    : gimple_opt_pass (pass_data_sccp, ctxt)
+  {}
+
+  /* opt_pass methods: */
+  virtual bool gate (function *) { return true; } // TODO Rozhodovat, jestli pass pustit
+  virtual unsigned int execute (function *);
+}; // class pass_sccp
+
+unsigned
+pass_sccp::execute (function *)
+{
+  basic_block bb;
+
+  FOR_EACH_BB_FN (bb, cfun)
+    {
+      gphi_iterator i;
+
+      for (i = gsi_start_phis (bb); !gsi_end_p (i); gsi_next (&i))
+	{
+	  gphi *phi = i.phi ();
+
+	  debug_gimple_stmt (phi); // debug phi na obrazovku
+	  // dump_gimple_stmt ... do souboru
+	}
+    }
+
+  return 0; // TODO Co tu mam vracet?
+}
+
+} // anon namespace
+
+gimple_opt_pass *
+make_pass_sccp (gcc::context *ctxt)
+{
+  return new pass_sccp (ctxt);
+}
diff --git a/gcc/tree-pass.h b/gcc/tree-pass.h
index 8480d41384b..9ce33ef7344 100644
--- a/gcc/tree-pass.h
+++ b/gcc/tree-pass.h
@@ -399,6 +399,7 @@ extern gimple_opt_pass *make_pass_iv_optimize (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_tree_loop_done (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_ch (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_ch_vect (gcc::context *ctxt);
+extern gimple_opt_pass *make_pass_sccp (gcc::context *ctxt); // TODO Kam
 extern gimple_opt_pass *make_pass_ccp (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_split_paths (gcc::context *ctxt);
 extern gimple_opt_pass *make_pass_build_ssa (gcc::context *ctxt);