Daily bump.

[pf3gnuchains/gcc-fork.git] / gcc / c-common.c

diff --git a/gcc/c-common.c b/gcc/c-common.c
index 2f5b00a..7f42e5c 100644 (file)
--- a/gcc/c-common.c
+++ b/gcc/c-common.c
@@ -22,7 +22,6 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "config.h"
 #include "system.h"
 #include "tree.h"
-#include "tree-inline.h"
 #include "flags.h"
 #include "toplev.h"
 #include "output.h"
@@ -195,6 +194,9 @@ int flag_short_wchar;
 
 int warn_sequence_point;
 
+/* Nonzero means to warn about compile-time division by zero.  */
+int warn_div_by_zero = 1;
+
 /* The elements of `ridpointers' are identifier nodes for the reserved
    type names and storage classes.  It is indexed by a RID_... value.  */
 tree *ridpointers;
@@ -220,9 +222,9 @@ int skip_evaluation;
 /* Information about how a function name is generated.  */
 struct fname_var_t
 {
-  tree *decl;  /* pointer to the VAR_DECL.  */
-  unsigned rid;        /* RID number for the identifier.  */
-  int pretty;  /* How pretty is it? */
+  tree *const decl;    /* pointer to the VAR_DECL.  */
+  const unsigned rid;  /* RID number for the identifier.  */
+  const int pretty;    /* How pretty is it? */
 };
 
 /* The three ways of getting then name of the current function.  */
@@ -511,8 +513,8 @@ tree
 combine_strings (strings)
      tree strings;
 {
-  register tree value, t;
-  register int length = 1;
+  tree value, t;
+  int length = 1;
   int wide_length = 0;
   int wide_flag = 0;
   int wchar_bytes = TYPE_PRECISION (wchar_type_node) / BITS_PER_UNIT;
@@ -522,7 +524,7 @@ combine_strings (strings)
   if (TREE_CHAIN (strings))
     {
       /* More than one in the chain, so concatenate.  */
-      register char *p, *q;
+      char *p, *q;
 
       /* Don't include the \0 at the end of each substring,
         except for the last one.
@@ -1503,7 +1505,7 @@ void
 binary_op_error (code)
      enum tree_code code;
 {
-  register const char *opname;
+  const char *opname;
 
   switch (code)
     {
@@ -1582,7 +1584,7 @@ shorten_compare (op0_ptr, op1_ptr, restype_ptr, rescode_ptr)
      tree *restype_ptr;
      enum tree_code *rescode_ptr;
 {
-  register tree type;
+  tree type;
   tree op0 = *op0_ptr;
   tree op1 = *op1_ptr;
   int unsignedp0, unsignedp1;
@@ -1615,8 +1617,8 @@ shorten_compare (op0_ptr, op1_ptr, restype_ptr, rescode_ptr)
   if (TREE_CONSTANT (primop0)
       && ! integer_zerop (primop1) && ! real_zerop (primop1))
     {
-      register tree tem = primop0;
-      register int temi = unsignedp0;
+      tree tem = primop0;
+      int temi = unsignedp0;
       primop0 = primop1;
       primop1 = tem;
       tem = op0;
@@ -1970,7 +1972,7 @@ truthvalue_conversion (expr)
       return real_zerop (expr) ? boolean_false_node : boolean_true_node;
 
     case ADDR_EXPR:
-      /* If we are taking the address of a external decl, it might be zero
+      /* If we are taking the address of an external decl, it might be zero
         if it is weak, so we cannot optimize.  */
       if (DECL_P (TREE_OPERAND (expr, 0))
          && DECL_EXTERNAL (TREE_OPERAND (expr, 0)))
@@ -2132,28 +2134,10 @@ c_apply_type_quals_to_decl (type_quals, decl)
          || !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (TREE_TYPE (decl))))
        error ("invalid use of `restrict'");
       else if (flag_strict_aliasing)
-       {
-         /* No two restricted pointers can point at the same thing.
-            However, a restricted pointer can point at the same thing
-            as an unrestricted pointer, if that unrestricted pointer
-            is based on the restricted pointer.  So, we make the
-            alias set for the restricted pointer a subset of the
-            alias set for the type pointed to by the type of the
-            decl.  */
-
-         HOST_WIDE_INT pointed_to_alias_set
-           = get_alias_set (TREE_TYPE (TREE_TYPE (decl)));
-
-         if (pointed_to_alias_set == 0)
-           /* It's not legal to make a subset of alias set zero.  */
-           ;
-         else
-           {
-             DECL_POINTER_ALIAS_SET (decl) = new_alias_set ();
-             record_alias_subset  (pointed_to_alias_set,
-                                   DECL_POINTER_ALIAS_SET (decl));
-           }
-       }
+       /* Indicate we need to make a unique alias set for this pointer.
+          We can't do it here because it might be pointing to an
+          incomplete type.  */
+       DECL_POINTER_ALIAS_SET (decl) = -2;
     }
 }
 
@@ -2162,7 +2146,7 @@ c_apply_type_quals_to_decl (type_quals, decl)
    or a type.  Return -1 if we don't do anything special.  */
 
 HOST_WIDE_INT
-lang_get_alias_set (t)
+c_common_get_alias_set (t)
      tree t;
 {
   tree u;
@@ -2237,10 +2221,6 @@ lang_get_alias_set (t)
       if (t1 != t)
        return get_alias_set (t1);
     }
-  /* It's not yet safe to use alias sets for classes in C++ because
-     the TYPE_FIELDs list for a class doesn't mention base classes.  */
-  else if (c_language == clk_cplusplus && AGGREGATE_TYPE_P (t))
-    return 0;
 
   return -1;
 }
@@ -2837,10 +2817,10 @@ int
 self_promoting_args_p (parms)
      tree parms;
 {
-  register tree t;
+  tree t;
   for (t = parms; t; t = TREE_CHAIN (t))
     {
-      register tree type = TREE_VALUE (t);
+      tree type = TREE_VALUE (t);
 
       if (TREE_CHAIN (t) == 0 && type != void_type_node)
        return 0;
@@ -3330,7 +3310,7 @@ mark_stmt_tree (p)
 
 void
 c_mark_lang_decl (c)
-     struct c_lang_decl *c;
+     struct c_lang_decl *c ATTRIBUTE_UNUSED;
 {
 }
 
@@ -3446,7 +3426,7 @@ c_unsafe_for_reeval (exp)
 
 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 
-static char c_tree_code_type[] = {
+static const char c_tree_code_type[] = {
   'x',
 #include "c-common.def"
 };
@@ -3458,7 +3438,7 @@ static char c_tree_code_type[] = {
 
 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 
-static int c_tree_code_length[] = {
+static const int c_tree_code_length[] = {
   0,
 #include "c-common.def"
 };
@@ -3831,8 +3811,6 @@ c_common_lang_init ()
   if (flag_bounds_check < 0)
     flag_bounds_check = flag_bounded_pointers;
 
-  lang_anon_aggr_type_p = anon_aggr_type_p;
-
   /* Special format checking options don't work without -Wformat; warn if
      they are used.  */
   if (warn_format_y2k && !warn_format)