calls.c (expand_call): Do not sibcall if outgoing_reg_parm_stack_space does not match.

	* calls.c (expand_call): Do not sibcall if
	outgoing_reg_parm_stack_space does not match.

Co-Authored-By: Kai Tietz <kai.tietz@onevision.com>

From-SVN: r142792

gcc/ChangeLog

+2008-12-12  Jan Hubicka  <jh@suse.cz>
+	    Kai Tietz <kai.tietz@onevision.com>
+
+	* calls.c (expand_call): Do not sibcall if
+	outgoing_reg_parm_stack_space does not match.
+
 2008-12-12  Anatoly Sokolov  <aesok@post.ru>
 
 	* config/avr/avr.c (avr_mcu_t): Add attiny87, attiny327, at90pwm81,

gcc/calls.c

@@ -2298,6 +2298,10 @@ expand_call (tree exp, rtx target, int ignore)
 	 It does not seem worth the effort since few optimizable
 	 sibling calls will return a structure.  */
       || structure_value_addr != NULL_RTX
+      /* If outgoing reg parm stack space changes, we can not do sibcall.  */
+      || (OUTGOING_REG_PARM_STACK_SPACE (funtype)
+	  != OUTGOING_REG_PARM_STACK_SPACE (TREE_TYPE (current_function_decl)))
+      || (reg_parm_stack_space != REG_PARM_STACK_SPACE (fndecl))
       /* Check whether the target is able to optimize the call
 	 into a sibcall.  */
       || !targetm.function_ok_for_sibcall (fndecl, exp)