i386.c (ix86_decompose_address): Handle subregs of AND zero extended address correctly.

	* config/i386/i386.c (ix86_decompose_address): Handle subregs of
	AND zero extended address correctly.

From-SVN: r185343

gcc/ChangeLog

 2012-03-13  Uros Bizjak  <ubizjak@gmail.com>
 
+	* config/i386/i386.c (ix86_decompose_address): Handle subregs of
+	AND zero extended address correctly.
+
+2012-03-13  Uros Bizjak  <ubizjak@gmail.com>
+
 	* config/i386/predicates.md (tls_symbolic_operand): Declare as
 	special predicate.
 	(tls_modbase_operand): Ditto.

gcc/config/i386/i386.c

@@ -11435,10 +11435,14 @@ ix86_decompose_address (rtx addr, struct ix86_address *out)
 	{
 	  addr = XEXP (addr, 0);
 
-	  /* Strip subreg.  */
-	  if (GET_CODE (addr) == SUBREG
-	      && GET_MODE (SUBREG_REG (addr)) == SImode)
+	  /* Adjust SUBREGs.  */
+	  if (GET_MODE (addr) == DImode)
+	    addr = gen_rtx_SUBREG (SImode, addr, 0);
+	  else if (GET_CODE (addr) == SUBREG
+		   && GET_MODE (SUBREG_REG (addr)) == SImode)
 	    addr = SUBREG_REG (addr);
+	  else
+	    return 0;
 	}
     }