Patch from David Mosberger to fix 32 host cross 64 target bug.

        * combine.c (simplify_logical, case AND): Only call
        simplify_and_const_int if the mode is no wider than HOST_WIDE_INT
	or the constant is positive.

From-SVN: r27517

gcc/ChangeLog

+Mon Jun 14 12:57:38 1999  David Mosberger  <davidm@hpl.hp.com>
+
+        * combine.c (simplify_logical, case AND): Only call
+        simplify_and_const_int if the mode is no wider than HOST_WIDE_INT
+	or the constant is positive.
+
 Mon Jun 14 11:43:41 1999  Nick Clifton  <nickc@cygnus.com>
 
 	* configure.in: Fix typo in rs6000-ibm-aix4 case.

gcc/combine.c

@@ -4902,7 +4902,12 @@ simplify_logical (x, last)
 	  && ! side_effects_p (op1))
 	x = gen_binary (AND, mode, XEXP (XEXP (op0, 0), 0), op1);
 
-      if (GET_CODE (op1) == CONST_INT)
+      /* We can call simplify_and_const_int only if we don't lose
+	 any (sign) bits when converting INTVAL (op1) to
+	 "unsigned HOST_WIDE_INT".  */
+      if (GET_CODE (op1) == CONST_INT
+	  && (GET_MODE_BITSIZE (mode) <= HOST_BITS_PER_WIDE_INT
+	      || INTVAL (op1) > 0))
 	{
 	  x = simplify_and_const_int (x, mode, op0, INTVAL (op1));