* dwarf2out.c (dwarf2out_frame_debug_expr): Consult the

[pf3gnuchains/gcc-fork.git] / gcc / alias.h

diff --git a/gcc/alias.h b/gcc/alias.h
index f53beba..73811d3 100644 (file)
--- a/gcc/alias.h
+++ b/gcc/alias.h
@@ -20,16 +20,32 @@ along with GCC; see the file COPYING3.  If not see
 #ifndef GCC_ALIAS_H
 #define GCC_ALIAS_H
 
-extern HOST_WIDE_INT new_alias_set (void);
-extern HOST_WIDE_INT get_varargs_alias_set (void);
-extern HOST_WIDE_INT get_frame_alias_set (void);
-extern bool component_uses_parent_alias_set (tree);
-extern bool alias_set_subset_of (HOST_WIDE_INT, HOST_WIDE_INT);
+#include "coretypes.h"
+
+/* The type of an alias set.  Code currently assumes that variables of
+   this type can take the values 0 (the alias set which aliases
+   everything) and -1 (sometimes indicating that the alias set is
+   unknown, sometimes indicating a memory barrier) and -2 (indicating
+   that the alias set should be set to a unique value but has not been
+   set yet).  */
+typedef int alias_set_type;
+
+extern alias_set_type new_alias_set (void);
+extern alias_set_type get_alias_set (tree);
+extern alias_set_type get_varargs_alias_set (void);
+extern alias_set_type get_frame_alias_set (void);
+extern bool component_uses_parent_alias_set (const_tree);
+extern bool alias_set_subset_of (alias_set_type, alias_set_type);
+extern void record_component_aliases (tree);
+extern int alias_sets_conflict_p (alias_set_type, alias_set_type);
+extern int alias_sets_must_conflict_p (alias_set_type, alias_set_type);
+extern int objects_must_conflict_p (tree, tree);
+extern int nonoverlapping_memrefs_p (const_rtx, const_rtx);
 
 /* This alias set can be used to force a memory to conflict with all
    other memories, creating a barrier across which no memory reference
    can move.  Note that there are other legacy ways to create such
    memory barriers, including an address of SCRATCH.  */
-#define ALIAS_SET_MEMORY_BARRIER       ((HOST_WIDE_INT) -1)
+#define ALIAS_SET_MEMORY_BARRIER       ((alias_set_type) -1)
 
 #endif /* GCC_ALIAS_H */