i386-protos.h (ix86_reg_parm_stack_space): New.

2008-06-03  Kai Tietz  <kai.tietz@onevision.com>

	* config/i386/i386-protos.h (ix86_reg_parm_stack_space): New.
	* config/i386/i386.h (ix86_reg_parm_stack_space): Removed
	prototype.
	* config/i386/i386.c (ix86_reg_parm_stack_space): Changed
	return type to int.
	(ix86_call_abi_override): Remove check for call_used_regs.

From-SVN: r136319

gcc/ChangeLog

+2008-06-03  Kai Tietz  <kai.tietz@onevision.com>
+
+	* config/i386/i386-protos.h (ix86_reg_parm_stack_space): New.
+	* config/i386/i386.h (ix86_reg_parm_stack_space): Removed
+	prototype.
+	* config/i386/i386.c (ix86_reg_parm_stack_space): Changed
+	return type to int.
+	(ix86_call_abi_override): Remove check for call_used_regs.
+
 2008-06-03  Richard Guenther  <rguenther@suse.de>
 
 	* tree-ssa-structalias.c (find_func_aliases): Add constraints

gcc/config/i386/i386-protos.h

@@ -141,6 +141,7 @@ extern int ix86_cfun_abi (void);
 extern int ix86_function_abi (const_tree);
 extern int ix86_function_type_abi (const_tree);
 extern void ix86_call_abi_override (const_tree);
+extern int ix86_reg_parm_stack_space (const_tree);
 
 extern void ix86_split_fp_branch (enum rtx_code code, rtx, rtx,
 				  rtx, rtx, rtx, rtx);

gcc/config/i386/i386.c

@@ -3542,7 +3542,7 @@ ix86_must_pass_in_stack (enum machine_mode mode, const_tree type)
 /* It returns the size, in bytes, of the area reserved for arguments passed
    in registers for the function represented by fndecl dependent to the used
    abi format.  */
-unsigned int
+int
 ix86_reg_parm_stack_space (const_tree fndecl)
 {
   int call_abi = 0;
@@ -3611,7 +3611,7 @@ ix86_call_abi_override (const_tree fndecl)
     cfun->machine->call_abi = DEFAULT_ABI;
   else
     cfun->machine->call_abi = ix86_function_type_abi (TREE_TYPE (fndecl));
-  if (TARGET_64BIT && cfun->machine->call_abi == MS_ABI && call_used_regs)
+  if (TARGET_64BIT && cfun->machine->call_abi == MS_ABI)
     {
       if (call_used_regs[4 /*RSI*/] != 0 || call_used_regs[5 /*RDI*/] != 0)
         {
@@ -3620,7 +3620,7 @@ ix86_call_abi_override (const_tree fndecl)
           init_regs ();
         }
     }
-  else if (TARGET_64BIT && call_used_regs)
+  else if (TARGET_64BIT)
     {
       if (call_used_regs[4 /*RSI*/] != 1 || call_used_regs[5 /*RDI*/] != 1)
         {

gcc/config/i386/i386.h

@@ -1641,8 +1641,6 @@ enum reg_class
 
 #define OUTGOING_REG_PARM_STACK_SPACE(FNTYPE) (ix86_function_type_abi (FNTYPE) == MS_ABI ? 1 : 0)
 
-extern unsigned int ix86_reg_parm_stack_space (const_tree);
-
 /* Value is the number of bytes of arguments automatically
    popped when returning from a subroutine call.
    FUNDECL is the declaration node of the function (as a tree),