simplify-rtx.c (simplify_unary_operation): Only transform (not (eq X Y)) into (ne X Y) when...

	* simplify-rtx.c (simplify_unary_operation): Only transform
	(not (eq X Y)) into (ne X Y) when mode is BImode or STORE_FLAG_VALUE
	is -1.  RTL "not" is a bit-wise not, "~", not a logical not "!".

From-SVN: r71532

gcc/ChangeLog

+2003-09-18  Roger Sayle  <roger@eyesopen.com>
+
+	* simplify-rtx.c (simplify_unary_operation): Only transform
+	(not (eq X Y)) into (ne X Y) when mode is BImode or STORE_FLAG_VALUE
+	is -1.  RTL "not" is a bit-wise not, "~", not a logical not "!".
+
 2003-09-18  Zdenek Dvorak  <rakdver@atrey.karlin.mff.cuni.cz>
 
 	PR target/11674

gcc/simplify-rtx.c

@@ -808,6 +808,7 @@ simplify_unary_operation (enum rtx_code code, enum machine_mode mode,
 
 	  /* (not (eq X Y)) == (ne X Y), etc.  */
 	  if (GET_RTX_CLASS (GET_CODE (op)) == '<'
+	      && (mode == BImode || STORE_FLAG_VALUE == -1)
 	      && ((reversed = reversed_comparison_code (op, NULL_RTX))
 		  != UNKNOWN))
 	    return simplify_gen_relational (reversed, mode, VOIDmode,