/* Dummy data flow analysis for GNU compiler in nonoptimizing mode.
- Copyright (C) 1987, 1991, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1994, 1995 Free Software Foundation, Inc.
This file is part of GNU CC.
if (code == SET || code == CLOBBER)
{
- if (SET_DEST (x) != 0 && GET_CODE (SET_DEST (x)) == REG)
+ if (SET_DEST (x) != 0
+ && (GET_CODE (SET_DEST (x)) == REG
+ || (GET_CODE (SET_DEST (x)) == SUBREG
+ && GET_CODE (SUBREG_REG (SET_DEST (x))) == REG
+ && (REGNO (SUBREG_REG (SET_DEST (x)))
+ >= FIRST_PSEUDO_REGISTER))))
{
/* Register is being assigned. */
- regno = REGNO (SET_DEST (x));
+ /* If setting a SUBREG, we treat the entire reg as being set. */
+ if (GET_CODE (SET_DEST (x)) == SUBREG)
+ regno = REGNO (SUBREG_REG (SET_DEST (x)));
+ else
+ regno = REGNO (SET_DEST (x));
/* For hard regs, update the where-live info. */
if (regno < FIRST_PSEUDO_REGISTER)