Use Pmode on x86_64 this parameter

2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/i386.c (x86_this_parameter): Replace DImode with
	Pmode.

From-SVN: r185196

gcc/ChangeLog

 2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>
 
+	* config/i386/i386.c (x86_this_parameter): Replace DImode with
+	Pmode.
+
+2012-03-11  H.J. Lu  <hongjiu.lu@intel.com>
+
 	* config/i386/i386.md (lwp_slwpcb): Check Pmode instead of
 	TARGET_64BIT.
 

gcc/config/i386/i386.c

@@ -31971,7 +31971,7 @@ x86_this_parameter (tree function)
         parm_regs = x86_64_ms_abi_int_parameter_registers;
       else
         parm_regs = x86_64_int_parameter_registers;
-      return gen_rtx_REG (DImode, parm_regs[aggr]);
+      return gen_rtx_REG (Pmode, parm_regs[aggr]);
     }
 
   nregs = ix86_function_regparm (type, function);