fold-const.c (fold_single_bit_test): If flag_syntax_only, pretend LOAD_EXTEND_OP is not defined.

	* fold-const.c (fold_single_bit_test): If flag_syntax_only, pretend
	LOAD_EXTEND_OP is not defined.
	(fold): Likewise.  If flag_syntax_only, don't depend on BITS_PER_WORD.

From-SVN: r92150

gcc/ChangeLog

+2004-12-14  Jakub Jelinek  <jakub@redhat.com>
+
+	* fold-const.c (fold_single_bit_test): If flag_syntax_only, pretend
+	LOAD_EXTEND_OP is not defined.
+	(fold): Likewise.  If flag_syntax_only, don't depend on BITS_PER_WORD.
+
 2004-12-14  Tobias Schlueter  <tobias.schlueter@physik.uni-muenchen.de>
 
 	* tree.def, doc/c-tree.texi: Correctly document restrictions on the

gcc/fold-const.c

@@ -5876,7 +5876,8 @@ fold_single_bit_test (enum tree_code code, tree arg0, tree arg1,
 	 operations as unsigned.  If we must use the AND, we have a choice.
 	 Normally unsigned is faster, but for some machines signed is.  */
 #ifdef LOAD_EXTEND_OP
-      ops_unsigned = (LOAD_EXTEND_OP (operand_mode) == SIGN_EXTEND ? 0 : 1);
+      ops_unsigned = (LOAD_EXTEND_OP (operand_mode) == SIGN_EXTEND 
+		      && !flag_syntax_only) ? 0 : 1;
 #else
       ops_unsigned = 1;
 #endif
@@ -6404,10 +6405,11 @@ fold (tree expr)
 	      && ! VOID_TYPE_P (TREE_OPERAND (tem, 2))
 	      && (TREE_TYPE (TREE_OPERAND (TREE_OPERAND (tem, 1), 0))
 		  == TREE_TYPE (TREE_OPERAND (TREE_OPERAND (tem, 2), 0)))
-	      && ! (INTEGRAL_TYPE_P (TREE_TYPE (tem))
-		    && (INTEGRAL_TYPE_P
-			(TREE_TYPE (TREE_OPERAND (TREE_OPERAND (tem, 1), 0))))
-		    && TYPE_PRECISION (TREE_TYPE (tem)) <= BITS_PER_WORD))
+	      && (! (INTEGRAL_TYPE_P (TREE_TYPE (tem))
+		     && (INTEGRAL_TYPE_P
+			 (TREE_TYPE (TREE_OPERAND (TREE_OPERAND (tem, 1), 0))))
+		     && TYPE_PRECISION (TREE_TYPE (tem)) <= BITS_PER_WORD)
+		  || flag_syntax_only))
 	    tem = build1 (code, type,
 			  build3 (COND_EXPR,
 				  TREE_TYPE (TREE_OPERAND
@@ -6614,6 +6616,7 @@ fold (tree expr)
 	      change = (cst == 0);
 #ifdef LOAD_EXTEND_OP
 	      if (change
+		  && !flag_syntax_only
 		  && (LOAD_EXTEND_OP (TYPE_MODE (TREE_TYPE (and0)))
 		      == ZERO_EXTEND))
 		{