calls.c (check_sibcall_argument_overlap_1): Adjust for ARGS_GROW_DOWNWARD.

        * calls.c (check_sibcall_argument_overlap_1): Adjust for
        ARGS_GROW_DOWNWARD.
        (check_sibcall_argument_overlap): Likewise.

From-SVN: r35887

gcc/ChangeLog

@@ -26,6 +26,10 @@
         
 2000-08-22  Alexandre Oliva  <aoliva@redhat.com>
 
+	* calls.c (check_sibcall_argument_overlap_1): Adjust for
+	ARGS_GROW_DOWNWARD.
+	(check_sibcall_argument_overlap): Likewise.
+
 	* invoke.texi (SH Options): Document -m4-nofpu,
 	-m4-single-only, -m4-single, -m4, -mbigtable, -mfmovd,
 	-mhitachi, -mnomacsave, -misize, -mpadstruct, -mspace.

gcc/calls.c

@@ -1974,6 +1974,10 @@ check_sibcall_argument_overlap_1 (x)
       else
 	return 0;
 
+#ifdef ARGS_GROW_DOWNWARD
+      i = -i - GET_MODE_SIZE (GET_MODE (x));
+#endif
+
       for (k = 0; k < GET_MODE_SIZE (GET_MODE (x)); k++)
 	if (i + k < stored_args_map->n_bits
 	    && TEST_BIT (stored_args_map, i + k))
@@ -2025,7 +2029,12 @@ check_sibcall_argument_overlap (insn, arg)
 	check_sibcall_argument_overlap_1 (PATTERN (insn)))
       break;
 
+#ifdef ARGS_GROW_DOWNWARD
+  low = -arg->offset.constant - arg->size.constant;
+#else
   low = arg->offset.constant;
+#endif
+
   for (high = low + arg->size.constant; low < high; low++)
     SET_BIT (stored_args_map, low);
   return insn != NULL_RTX;