avr.md: Call CC_STATUS_INIT in all peepnoles which can change CC0.

	* config/avr/avr.md: Call CC_STATUS_INIT in all peepnoles
        which can change CC0.

From-SVN: r56253

gcc/ChangeLog

+2002-08-13  Denis Chertykov  <denisc@overta.ru>
+
+	* config/avr/avr.md: Call CC_STATUS_INIT in all peepnoles
+        which can change CC0.
+
 Tue Aug 13 14:49:20 2002  J"orn Rennecke <joern.rennecke@superh.com>
 
 	* gcse.c (adjust_libcall_notes): New function.

gcc/config/avr/avr.md

 ;; -*- Mode: Scheme -*-
 ;;   Machine description for GNU compiler,
 ;;   for ATMEL AVR micro controllers.
-;;   Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+;;   Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
 ;;   Contributed by Denis Chertykov (denisc@overta.ru)
 
 ;; This file is part of GNU CC.
@@ -2403,6 +2403,7 @@
     && test_hard_reg_class (LD_REGS, operands[1]))"
   "*
 {
+  CC_STATUS_INIT;
   if (test_hard_reg_class (ADDW_REGS, operands[0]))
     output_asm_insn (AS2 (sbiw,%0,1) CR_TAB
 		     AS2 (sbc,%C0,__zero_reg__) CR_TAB
@@ -2441,6 +2442,7 @@
     && test_hard_reg_class (LD_REGS, operands[1]))"
   "*
 {
+  CC_STATUS_INIT;
   if (test_hard_reg_class (ADDW_REGS, operands[0]))
     output_asm_insn (AS2 (sbiw,%0,1), operands);
   else
@@ -2472,6 +2474,9 @@
   "test_hard_reg_class (LD_REGS, operands[0])"
   "*
 {
+  CC_STATUS_INIT;
+  cc_status.value1 = operands[0];
+  cc_status.flags |= CC_OVERFLOW_UNUSABLE;
   output_asm_insn (AS2 (subi,%A0,1), operands);
   switch (avr_jump_mode (operands[1],insn))
   {