re PR rtl-optimization/7967 (optimization produces wrong code (ARM))

PR optimization/7967
* arm.md (ne_zeroextractsi): Add clobber of the condition code
register.

From-SVN: r57278

gcc/ChangeLog

+2002-09-18  Richard Earnshaw  (reanrsha@arm.com)
+
+	PR optimization/7967
+	* arm.md (ne_zeroextractsi): Add clobber of the condition code
+	register.
+
 2002-09-18  Kazu Hirata  <kazu@cs.umass.edu>
 
 	* config/s390/s390.c: Follow spelling convention.

gcc/config/arm/arm.md

@@ -1838,7 +1838,8 @@
 		(match_operand:SI 1 "s_register_operand" "r")
 		(match_operand:SI 2 "const_int_operand" "n")
 		(match_operand:SI 3 "const_int_operand" "n"))
-	       (const_int 0)))]
+	       (const_int 0)))
+   (clobber (reg:CC CC_REGNUM))]
   "TARGET_ARM
    && (INTVAL (operands[3]) >= 0 && INTVAL (operands[3]) < 32
        && INTVAL (operands[2]) > 0