+2002-04-26 Alexandre Oliva <aoliva@redhat.com>
+
+ * tree.c (tree_int_cst_lt): Compare constants whose types differ
+ in unsigned-ness correctly.
+
2002-04-26 John David Anglin <dave@hiauly1.hia.nrc.ca>
* pa.h (FUNCTION_OK_FOR_SIBCALL): Don't do sibcalls when using the
if (t1 == t2)
return 0;
- if (! TREE_UNSIGNED (TREE_TYPE (t1)))
+ if (TREE_UNSIGNED (TREE_TYPE (t1)) != TREE_UNSIGNED (TREE_TYPE (t2)))
+ {
+ int t1_sgn = tree_int_cst_sgn (t1);
+ int t2_sgn = tree_int_cst_sgn (t2);
+
+ if (t1_sgn < t2_sgn)
+ return 1;
+ else if (t1_sgn > t2_sgn)
+ return 0;
+ /* Otherwise, both are non-negative, so we compare them as
+ unsigned just in case one of them would overflow a signed
+ type. */
+ }
+ else if (! TREE_UNSIGNED (TREE_TYPE (t1)))
return INT_CST_LT (t1, t2);
return INT_CST_LT_UNSIGNED (t1, t2);