Partial revert of r243782 to restore previous behavior

gcc/
	* lra-constraints.c (simplify_operand_subreg): Remove early
	return false.

From-SVN: r245600

gcc/ChangeLog

 2017-02-20  Matthew Fortune  <matthew.fortune@imgtec.com>
 
+	* lra-constraints.c (simplify_operand_subreg): Remove early
+	return false.
+
+2017-02-20  Matthew Fortune  <matthew.fortune@imgtec.com>
+
 	PR target/78660
 	* lra-constraints.c (curr_insn_transform): Tighten condition
 	for converting SUBREG reloads from OP_OUT to OP_INOUT.

gcc/lra-constraints.c

@@ -1600,7 +1600,8 @@ simplify_operand_subreg (int nop, machine_mode reg_mode)
 	 the memory.  Typical case is when the index scale should
 	 correspond the memory.  */
       *curr_id->operand_loc[nop] = operand;
-      return false;
+      /* Do not return false here as the MEM_P (reg) will be processed
+	 later in this function.  */
     }
   else if (REG_P (reg) && REGNO (reg) < FIRST_PSEUDO_REGISTER)
     {