1 files changed, 75 insertions, 0 deletions
diff --git a/gcc/valtrack.h b/gcc/valtrack.h
new file mode 100644
index 00000000000..9f96f210b1a
--- /dev/null
+++ b/gcc/valtrack.h
@@ -0,0 +1,75 @@
+/* Infrastructure for tracking user variable locations and values
+   throughout compilation.
+   Copyright (C) 2010, 2011, 2012  Free Software Foundation, Inc.
+   Contributed by Alexandre Oliva <aoliva@redhat.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/>.  */
+
+#ifndef GCC_VALTRACK_H
+#define GCC_VALTRACK_H
+
+#include "bitmap.h"
+#include "df.h"
+#include "rtl.h"
+#include "basic-block.h"
+
+/* Debug uses of dead regs.  */
+
+/* Node of a linked list of uses of dead REGs in debug insns.  */
+struct dead_debug_use
+{
+  df_ref use;
+  struct dead_debug_use *next;
+};
+
+/* Linked list of the above, with a bitmap of the REGs in the
+   list.  */
+struct dead_debug
+{
+  struct dead_debug_use *head;
+  bitmap used;
+  bitmap to_rescan;
+};
+
+/* This type controls the behavior of dead_debug_insert_temp WRT
+   UREGNO and INSN.  */
+enum debug_temp_where
+  {
+    /* Bind a newly-created debug temporary to a REG for UREGNO, and
+       insert the debug insn before INSN.  REG is expected to die at
+       INSN.  */
+    DEBUG_TEMP_BEFORE_WITH_REG = -1,
+    /* Bind a newly-created debug temporary to the value INSN stores
+       in REG, and insert the debug insn before INSN.  */
+    DEBUG_TEMP_BEFORE_WITH_VALUE = 0,
+    /* Bind a newly-created debug temporary to a REG for UREGNO, and
+       insert the debug insn after INSN.  REG is expected to be set at
+       INSN.  */
+    DEBUG_TEMP_AFTER_WITH_REG = 1
+  };
+
+extern void dead_debug_init (struct dead_debug *, bitmap);
+extern void dead_debug_finish (struct dead_debug *, bitmap);
+extern void dead_debug_add (struct dead_debug *, df_ref, unsigned int);
+extern int dead_debug_insert_temp (struct dead_debug *,
+				   unsigned int uregno, rtx insn,
+				   enum debug_temp_where);
+
+extern void propagate_for_debug (rtx, rtx, rtx, rtx, basic_block);
+
+
+#endif /* GCC_VALTRACK_H */