1999-11-22 Andrew Haley <aph@cygnus.com>

        * varasm.c (function_defined): Remove.
        (make_function_rtl): Don't set function_defined.
        (make_decl_rtl): Remove global register warning.
        * regclass.c (no_global_reg_vars): New variable.
        (globalize_reg): Warn if function has already been defined.
        (regclass_init): Set no_global_reg_vars.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@30611 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index fed8812..6cec51c 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,12 @@
+1999-11-22  Andrew Haley  <aph@cygnus.com>
+
+        * varasm.c (function_defined): Remove.
+        (make_function_rtl): Don't set function_defined.
+        (make_decl_rtl): Remove global register warning.
+        * regclass.c (no_global_reg_vars): New variable.
+        (globalize_reg): Warn if function has already been defined.
+        (regclass_init): Set no_global_reg_vars.
+
 Mon Nov 22 14:42:22 MET 1999  Jan Hubicka  <hubicka@freesoft.cz>
 
        * regclass.c (reg_pref): New structure and static variable

diff --git a/gcc/regclass.c b/gcc/regclass.c
index 544159b..cba13c4 100644 (file)
--- a/gcc/regclass.c
+++ b/gcc/regclass.c
@@ -218,6 +218,11 @@ struct reg_info_data {
 
 static struct reg_info_data *reg_info_head;
 
+/* No more global register vairiables may be declared; true once
+   regclass has been initialized. */
+
+static int no_global_reg_vars = 0;
+
 
 /* Function called only once to initialize the above data on reg usage.
    Once this is done, various switches may override.  */
@@ -625,6 +630,9 @@ void
 globalize_reg (i)
      int i;
 {
+  if (no_global_reg_vars)
+    error ("global register variable follows a function definition");
+
   if (global_regs[i])
     {
       warning ("register used for two global register variables");
@@ -758,6 +766,9 @@ regclass_init ()
   /* This prevents dump_flow_info from losing if called
      before regclass is run.  */
   reg_pref = NULL;
+
+  /* No more global register vairiables may be declared. */
+  no_global_reg_vars = 1;
 }
 \f
 /* Dump register costs.  */

diff --git a/gcc/varasm.c b/gcc/varasm.c
index d4da698..aca7a07 100644 (file)
--- a/gcc/varasm.c
+++ b/gcc/varasm.c
@@ -149,10 +149,6 @@ int size_directive_output;
 
 tree last_assemble_variable_decl;
 
-/* Nonzero if at least one function definition has been seen.  */
-
-static int function_defined;
-
 static const char *strip_reg_name      PROTO((const char *));
 static int contains_pointers_p         PROTO((tree));
 static void decode_addr_const          PROTO((tree, struct addr_const *));
@@ -579,9 +575,6 @@ make_function_rtl (decl)
        ENCODE_SECTION_INFO (decl);
 #endif
     }
-
-  /* Record at least one function has been defined.  */
-  function_defined = 1;
 }
 
 /* Given NAME, a putative register name, discard any customary prefixes.  */
@@ -729,9 +722,6 @@ make_decl_rtl (decl, asmspec, top_level)
              DECL_INITIAL (decl) = 0;
              error ("global register variable has initial value");
            }
-         if (fixed_regs[reg_number] == 0
-             && function_defined && top_level)
-           error ("global register variable follows a function definition");
          if (TREE_THIS_VOLATILE (decl))
            warning ("volatile register variables don't work as you might wish");