pa.c (emit_move_sequence): Do not stop on SUBREG_WORD of an operand.

        * pa.c (emit_move_sequence): Do not stop on SUBREG_WORD of an
        operand.

From-SVN: r28939

gcc/ChangeLog

+Fri Aug 27 15:35:24 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* pa.c (emit_move_sequence): Do not stop on SUBREG_WORD of an
+	operand.
+
 Fri Aug 27 14:01:19 1999  Marc Espie <espie@cvs.openbsd.org>
 
 	* config/openbsd.h: Define SET_ASM_OP.

gcc/config/pa/pa.c

@@ -1136,8 +1136,12 @@ emit_move_sequence (operands, mode, scratch_reg)
 	   && GET_CODE (SUBREG_REG (operand0)) == REG
 	   && REGNO (SUBREG_REG (operand0)) >= FIRST_PSEUDO_REGISTER)
     {
-      SUBREG_REG (operand0) = reg_equiv_mem[REGNO (SUBREG_REG (operand0))];
-      operand0 = alter_subreg (operand0);
+     /* We must not alter SUBREG_WORD (operand0) since that would confuse
+	the code which tracks sets/uses for delete_output_reload.  */
+      rtx temp = gen_rtx_SUBREG (GET_MODE (operand0),
+				 reg_equiv_mem [REGNO (SUBREG_REG (operand0))],
+				 SUBREG_WORD (operand0));
+      operand0 = alter_subreg (temp);
     }
 
   if (scratch_reg
@@ -1149,8 +1153,12 @@ emit_move_sequence (operands, mode, scratch_reg)
 	   && GET_CODE (SUBREG_REG (operand1)) == REG
 	   && REGNO (SUBREG_REG (operand1)) >= FIRST_PSEUDO_REGISTER)
     {
-      SUBREG_REG (operand1) = reg_equiv_mem[REGNO (SUBREG_REG (operand1))];
-      operand1 = alter_subreg (operand1);
+     /* We must not alter SUBREG_WORD (operand0) since that would confuse
+	the code which tracks sets/uses for delete_output_reload.  */
+      rtx temp = gen_rtx_SUBREG (GET_MODE (operand1),
+				 reg_equiv_mem [REGNO (SUBREG_REG (operand1))],
+				 SUBREG_WORD (operand1));
+      operand1 = alter_subreg (temp);
     }
 
   if (scratch_reg && reload_in_progress && GET_CODE (operand0) == MEM