[committed] Fix fold_checking after Kenner added more tree checking

[committed] Fix fold_checking after Kenner added more tree checking

[Andrew Pinski]

Serge Belyshev reported this in IRC and I figured out what was
going wrong.  When Kenner added some more tree-checking he
had forgot to test with fold-checking also turned on to
see if he had to change anything there.  This patch
fixes the two problems which was reported so far,
I have not checked to see if there was any other problems
yet.

I committed this as obvious to get fold-checking further.

Thanks,
Andrew Pinski


ChangeLog:
	* fold-const.c (fold_checksum_tree <case 't'>): Only
	look at TREE_VALUES if the EXPR is an ENUMERAL_TYPE.
	Only look at TYPE_MIN_VALUE and TYPE_MAX_VALUE if
	EXPR is an INTEGERAL_TYPE or a scalar float type.


Patch:
Index: fold-const.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/fold-const.c,v
retrieving revision 1.394
diff -u -p -r1.394 fold-const.c
--- fold-const.c	12 Jun 2004 19:41:49 -0000	1.394
+++ fold-const.c	13 Jun 2004 22:08:22 -0000
@@ -8731,13 +8731,18 @@ fold_checksum_tree (tree expr, struct md
       fold_checksum_tree (DECL_VINDEX (expr), ctx, ht);
       break;
     case 't':
-      fold_checksum_tree (TYPE_VALUES (expr), ctx, ht);
+      if (TREE_CODE (expr) == ENUMERAL_TYPE)
+        fold_checksum_tree (TYPE_VALUES (expr), ctx, ht);
       fold_checksum_tree (TYPE_SIZE (expr), ctx, ht);
       fold_checksum_tree (TYPE_SIZE_UNIT (expr), ctx, ht);
       fold_checksum_tree (TYPE_ATTRIBUTES (expr), ctx, ht);
       fold_checksum_tree (TYPE_NAME (expr), ctx, ht);
-      fold_checksum_tree (TYPE_MIN_VALUE (expr), ctx, ht);
-      fold_checksum_tree (TYPE_MAX_VALUE (expr), ctx, ht);
+      if (INTEGRAL_TYPE_P (expr)
+          || SCALAR_FLOAT_TYPE_P (expr))
+	{
+	  fold_checksum_tree (TYPE_MIN_VALUE (expr), ctx, ht);
+	  fold_checksum_tree (TYPE_MAX_VALUE (expr), ctx, ht);
+	}
       fold_checksum_tree (TYPE_MAIN_VARIANT (expr), ctx, ht);
       fold_checksum_tree (TYPE_BINFO (expr), ctx, ht);
       fold_checksum_tree (TYPE_CONTEXT (expr), ctx, ht);