regclass.c (globalize_reg): Re-instate test that allows fixed registers to be…

regclass.c (globalize_reg): Re-instate test that allows fixed registers to be declared as a variable even...

	* regclass.c (globalize_reg): Re-instate test that allows
	fixed registers to be declared as a variable even after functions
	are defined.

	* testsuite/gcc.dg/991209-1.c: New test.

From-SVN: r30853

gcc/ChangeLog

+Fri Dec 10 00:53:10 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* regclass.c (globalize_reg): Re-instate test that allows
+	fixed registers to be declared as a variable even after functions
+	are defined.
+
 Fri Dec 10 00:52:13 MET 1999  Jan Hubicka  <hubicka@freesoft.cz>
 
 	* i386.md (cpu attribute): Add "athlon".

gcc/regclass.c

@@ -218,7 +218,7 @@ struct reg_info_data {
 
 static struct reg_info_data *reg_info_head;
 
-/* No more global register vairiables may be declared; true once
+/* No more global register variables may be declared; true once
    regclass has been initialized. */
 
 static int no_global_reg_vars = 0;
@@ -630,7 +630,7 @@ void
 globalize_reg (i)
      int i;
 {
-  if (no_global_reg_vars)
+  if (fixed_regs[i] == 0 && no_global_reg_vars)
     error ("global register variable follows a function definition");
 
   if (global_regs[i])
@@ -767,7 +767,7 @@ regclass_init ()
      before regclass is run.  */
   reg_pref = NULL;
 
-  /* No more global register vairiables may be declared. */
+  /* No more global register variables may be declared. */
   no_global_reg_vars = 1;
 }
 

gcc/testsuite/ChangeLog

+Fri Dec 10 00:53:10 1999  J"orn Rennecke <amylaar@cygnus.co.uk>
+
+	* gcc.dg/991209-1.c: New test.
+
 Wed Dec  8 23:44:08 1999  Nathan Sidwell <nathan@acm.org>
 
 	* gcc.c-torture/compile/991208-1.c: New test.

gcc/testsuite/gcc.dg/991209-1.c

+/* { dg-do compile { target i386-*-* } } */
+
+int foo ()
+{
+  return 1;
+}
+
+register char *stack_ptr asm ("%esp");