https://gcc.gnu.org/g:8f4b6a6dadd92a06849b78af5630a2ca5dd70212
commit 8f4b6a6dadd92a06849b78af5630a2ca5dd70212
Author: Ondřej Machota <ondrejmach...@gmail.com>
Date: Sun May 5 21:19:18 2024 +0200
rlt-ssa: dce init and done functions
Diff:
---
gcc/dce.cc | 42 +++++++++++++++++++++++++++++++++++-------
1 file changed, 35 insertions(+), 7 deletions(-)
diff --git a/gcc/dce.cc b/gcc/dce.cc
index 9ded9256c3b..591a750e456 100644
--- a/gcc/dce.cc
+++ b/gcc/dce.cc
@@ -17,6 +17,8 @@ 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/>. */
+#define INCLUDE_ALGORITHM
+#define INCLUDE_FUNCTIONAL
#include "config.h"
#include "system.h"
#include "coretypes.h"
@@ -25,6 +27,7 @@ along with GCC; see the file COPYING3. If not see
#include "tree.h"
#include "predict.h"
#include "df.h"
+#include "rtl-ssa.h"
#include "memmodel.h"
#include "tm_p.h"
#include "emit-rtl.h" /* FIXME: Can go away once crtl is moved to rtl.h. */
@@ -1292,7 +1295,37 @@ public:
}; // class pass_fast_rtl_dce
-} // anon namespace
+} // namespace
+
+static void
+rtl_ssa_dce_init ()
+{
+ calculate_dominance_info (CDI_DOMINATORS);
+ crtl->ssa = new rtl_ssa::function_info (cfun);
+}
+
+static void
+rtl_ssa_dce_done ()
+{
+ free_dominance_info (CDI_DOMINATORS);
+ if (crtl->ssa->perform_pending_updates ())
+ cleanup_cfg (0);
+
+ delete crtl->ssa;
+ crtl->ssa = nullptr;
+
+ if (dump_file)
+ fprintf (dump_file, "\nFinished running rtl_ssa_dce\n\n");
+}
+
+static unsigned int
+rtl_ssa_dce ()
+{
+ rtl_ssa_dce_init ();
+
+ rtl_ssa_dce_done ();
+ return 0;
+}
rtl_opt_pass *
make_pass_fast_rtl_dce (gcc::context *ctxt)
@@ -1324,12 +1357,7 @@ public:
/* opt_pass methods: */
bool gate (function *) final override { return flag_dce; }
- unsigned int execute (function *) final override
- {
- if (dump_file)
- fprintf (dump_file, "pass_rtl_ssa_dce called\n");
- return 0;
- }
+ unsigned int execute (function *) final override { return rtl_ssa_dce (); }
}; // class pass_fast_rtl_dce
