+Fri Mar 27 00:49:46 1998 Jeffrey A Law (law@cygnus.com)
+
+ * regclass.c (reg_scan_mark_refs): Be more selective about
+ when we mark a register with REGNO_POINTER_FLAG.
+
Thu Mar 26 23:00:11 1998 J"orn Rennecke <amylaar@cygnus.co.uk>
reload inheritance improvement:
if (GET_CODE (SET_DEST (x)) == REG
&& REGNO (SET_DEST (x)) >= FIRST_PSEUDO_REGISTER
+ /* If the destination pseudo is set more than once, then other
+ sets might not be to a pointer value (consider access to a
+ union in two threads of control in the presense of global
+ optimizations). So only set REGNO_POINTER_FLAG on the destination
+ pseudo if this is the only set of that pseudo. */
+ && REG_N_SETS (REGNO (SET_DEST (x))) == 1
&& ! REG_USERVAR_P (SET_DEST (x))
&& ! REGNO_POINTER_FLAG (REGNO (SET_DEST (x)))
&& ((GET_CODE (SET_SRC (x)) == REG