Fix for aliasing problem reported by Michael Matz.

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

diff --git a/gcc/cselib.h b/gcc/cselib.h
index 8cb2e6b..7af7794 100644 (file)
--- a/gcc/cselib.h
+++ b/gcc/cselib.h
@@ -1,6 +1,6 @@
 /* Common subexpression elimination for GNU compiler.
    Copyright (C) 1987, 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-   1999 Free Software Foundation, Inc.
+   1999, 2003 Free Software Foundation, Inc.
 
 This file is part of GCC.
 
@@ -38,6 +38,8 @@ typedef struct cselib_val_struct GTY(())
   /* If this value is used as an address, points to a list of values that
      use it as an address in a MEM.  */
   struct elt_list *addr_list;
+
+  struct cselib_val_struct *next_containing_mem;
 } cselib_val;
 
 /* A list of rtl expressions that hold the same value.  */
@@ -49,6 +51,8 @@ struct elt_loc_list GTY(())
   rtx loc;
   /* The insn that made the equivalence.  */
   rtx setting_insn;
+  /* True when setting insn is inside libcall.  */
+  bool in_libcall;
 };
 
 /* A list of cselib_val structures.  */
@@ -58,11 +62,12 @@ struct elt_list GTY(())
   cselib_val *elt;
 };
 
-extern cselib_val *cselib_lookup       PARAMS ((rtx, enum machine_mode, int));
-extern void cselib_update_varray_sizes PARAMS ((void));
-extern void cselib_init                        PARAMS ((void));
-extern void cselib_finish              PARAMS ((void));
-extern void cselib_process_insn                PARAMS ((rtx));
-extern int rtx_equal_for_cselib_p      PARAMS ((rtx, rtx));
-extern int references_value_p          PARAMS ((rtx, int));
-extern rtx cselib_subst_to_values      PARAMS ((rtx));
+extern cselib_val *cselib_lookup (rtx, enum machine_mode, int);
+extern void cselib_update_varray_sizes (void);
+extern void cselib_init (void);
+extern void cselib_finish (void);
+extern void cselib_process_insn (rtx);
+extern enum machine_mode cselib_reg_set_mode (rtx);
+extern int rtx_equal_for_cselib_p (rtx, rtx);
+extern int references_value_p (rtx, int);
+extern rtx cselib_subst_to_values (rtx);