+2010-01-13 Jakub Jelinek <jakub@redhat.com>
+
+ PR debug/41371
+ * var-tracking.c (values_to_unmark): New variable.
+ (find_loc_in_1pdv): Clear VALUE_RECURSED_INTO of values in
+ values_to_unmark vector. Moved body to...
+ (find_loc_in_1pdv_1): ... this. Don't clear VALUE_RECURSED_INTO,
+ instead queue it into values_to_unmark vector.
+ (vt_find_locations): Free values_to_unmark vector.
+
2010-01-13 Wolfgang Gellerich <gellerich@de.ibm.com>
* config/s390/s390.c (override_options): Set
/* Variable tracking routines for the GNU compiler.
- Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009
+ Copyright (C) 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
This file is part of GCC.
: DECL_CHANGED (dv_as_decl (dv)));
}
-/* Return a location list node whose loc is rtx_equal to LOC, in the
+/* Vector of VALUEs that should have VALUE_RECURSED_INTO bit cleared
+ at the end of find_loc_in_1pdv. Not a static variable in find_loc_in_1pdv
+ to avoid constant allocation/freeing of it. */
+static VEC(rtx, heap) *values_to_unmark;
+
+/* Helper function for find_loc_in_1pdv.
+ Return a location list node whose loc is rtx_equal to LOC, in the
location list of a one-part variable or value VAR, or in that of
any values recursively mentioned in the location lists. */
static location_chain
-find_loc_in_1pdv (rtx loc, variable var, htab_t vars)
+find_loc_in_1pdv_1 (rtx loc, variable var, htab_t vars)
{
location_chain node;
{
location_chain where;
VALUE_RECURSED_INTO (node->loc) = true;
- if ((where = find_loc_in_1pdv (loc, var, vars)))
- {
- VALUE_RECURSED_INTO (node->loc) = false;
- return where;
- }
- VALUE_RECURSED_INTO (node->loc) = false;
+ VEC_safe_push (rtx, heap, values_to_unmark, node->loc);
+ if ((where = find_loc_in_1pdv_1 (loc, var, vars)))
+ return where;
}
}
return NULL;
}
+/* Return a location list node whose loc is rtx_equal to LOC, in the
+ location list of a one-part variable or value VAR, or in that of
+ any values recursively mentioned in the location lists. */
+
+static location_chain
+find_loc_in_1pdv (rtx loc, variable var, htab_t vars)
+{
+ location_chain ret;
+ unsigned int i;
+ rtx value;
+
+ ret = find_loc_in_1pdv_1 (loc, var, vars);
+ for (i = 0; VEC_iterate (rtx, values_to_unmark, i, value); i++)
+ VALUE_RECURSED_INTO (value) = false;
+ VEC_truncate (rtx, values_to_unmark, 0);
+ return ret;
+}
+
/* Hash table iteration argument passed to variable_merge. */
struct dfset_merge
{
FOR_EACH_BB (bb)
gcc_assert (VTI (bb)->flooded);
+ VEC_free (rtx, heap, values_to_unmark);
free (bb_order);
fibheap_delete (worklist);
fibheap_delete (pending);