return ((unsigned HOST_WIDE_INT) -((object_size_type >> 1) ^ 1));
}
+/* Grow object_sizes[OBJECT_SIZE_TYPE] to num_ssa_names. */
+
+static inline void
+object_sizes_grow (int object_size_type)
+{
+ if (num_ssa_names > object_sizes[object_size_type].length ())
+ object_sizes[object_size_type].safe_grow (num_ssa_names, true);
+}
+
+/* Release object_sizes[OBJECT_SIZE_TYPE]. */
+
+static inline void
+object_sizes_release (int object_size_type)
+{
+ object_sizes[object_size_type].release ();
+}
+
+/* Return true if object_sizes[OBJECT_SIZE_TYPE][VARNO] is unknown. */
+
+static inline bool
+object_sizes_unknown_p (int object_size_type, unsigned varno)
+{
+ return (object_sizes[object_size_type][varno]
+ == unknown (object_size_type));
+}
+
+/* Return size for VARNO corresponding to OSI. */
+
+static inline unsigned HOST_WIDE_INT
+object_sizes_get (struct object_size_info *osi, unsigned varno)
+{
+ return object_sizes[osi->object_size_type][varno];
+}
+
+/* Set size for VARNO corresponding to OSI to VAL. */
+
+static inline bool
+object_sizes_set_force (struct object_size_info *osi, unsigned varno,
+ unsigned HOST_WIDE_INT val)
+{
+ object_sizes[osi->object_size_type][varno] = val;
+ return true;
+}
+
+/* Set size for VARNO corresponding to OSI to VAL if it is the new minimum or
+ maximum. */
+
+static inline bool
+object_sizes_set (struct object_size_info *osi, unsigned varno,
+ unsigned HOST_WIDE_INT val)
+{
+ int object_size_type = osi->object_size_type;
+ if ((object_size_type & OST_MINIMUM) == 0)
+ {
+ if (object_sizes[object_size_type][varno] < val)
+ return object_sizes_set_force (osi, varno, val);
+ }
+ else
+ {
+ if (object_sizes[object_size_type][varno] > val)
+ return object_sizes_set_force (osi, varno, val);
+ }
+ return false;
+}
+
/* Initialize OFFSET_LIMIT variable. */
static void
init_offset_limit (void)
collect_object_sizes_for (osi, var);
if (bitmap_bit_p (computed[object_size_type],
SSA_NAME_VERSION (var)))
- sz = object_sizes[object_size_type][SSA_NAME_VERSION (var)];
+ sz = object_sizes_get (osi, SSA_NAME_VERSION (var));
else
sz = unknown (object_size_type);
}
return false;
}
+ struct object_size_info osi;
+ osi.object_size_type = object_size_type;
if (!bitmap_bit_p (computed[object_size_type], SSA_NAME_VERSION (ptr)))
{
- struct object_size_info osi;
bitmap_iterator bi;
unsigned int i;
- if (num_ssa_names > object_sizes[object_size_type].length ())
- object_sizes[object_size_type].safe_grow (num_ssa_names, true);
+ object_sizes_grow (object_size_type);
if (dump_file)
{
fprintf (dump_file, "Computing %s %sobject size for ",
osi.visited = BITMAP_ALLOC (NULL);
osi.reexamine = BITMAP_ALLOC (NULL);
- osi.object_size_type = object_size_type;
osi.depths = NULL;
osi.stack = NULL;
osi.tos = NULL;
if (dump_file)
{
EXECUTE_IF_SET_IN_BITMAP (osi.visited, 0, i, bi)
- if (object_sizes[object_size_type][i]
- != unknown (object_size_type))
+ if (!object_sizes_unknown_p (object_size_type, i))
{
print_generic_expr (dump_file, ssa_name (i),
dump_flags);
((object_size_type & OST_MINIMUM) ? "minimum"
: "maximum"),
(object_size_type & OST_SUBOBJECT) ? "sub" : "",
- object_sizes[object_size_type][i]);
+ object_sizes_get (&osi, i));
}
}
BITMAP_FREE (osi.visited);
}
- *psize = object_sizes[object_size_type][SSA_NAME_VERSION (ptr)];
+ *psize = object_sizes_get (&osi, SSA_NAME_VERSION (ptr));
return *psize != unknown (object_size_type);
}
unsigned int varno = SSA_NAME_VERSION (ptr);
unsigned HOST_WIDE_INT bytes;
- gcc_assert (object_sizes[object_size_type][varno]
- != unknown (object_size_type));
+ gcc_assert (!object_sizes_unknown_p (object_size_type, varno));
gcc_assert (osi->pass == 0);
if (TREE_CODE (value) == WITH_SIZE_EXPR)
else
bytes = unknown (object_size_type);
- if ((object_size_type & OST_MINIMUM) == 0)
- {
- if (object_sizes[object_size_type][varno] < bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
- else
- {
- if (object_sizes[object_size_type][varno] > bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
+ object_sizes_set (osi, varno, bytes);
}
gcc_assert (is_gimple_call (call));
- gcc_assert (object_sizes[object_size_type][varno]
- != unknown (object_size_type));
+ gcc_assert (!object_sizes_unknown_p (object_size_type, varno));
gcc_assert (osi->pass == 0);
bytes = alloc_object_size (call, object_size_type);
- if ((object_size_type & OST_MINIMUM) == 0)
- {
- if (object_sizes[object_size_type][varno] < bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
- else
- {
- if (object_sizes[object_size_type][varno] > bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
+ object_sizes_set (osi, varno, bytes);
}
{
int object_size_type = osi->object_size_type;
unsigned int varno = SSA_NAME_VERSION (ptr);
- unsigned HOST_WIDE_INT bytes = unknown (object_size_type);
- gcc_checking_assert (object_sizes[object_size_type][varno] != bytes);
+ gcc_checking_assert (!object_sizes_unknown_p (object_size_type, varno));
gcc_checking_assert (osi->pass == 0);
- object_sizes[object_size_type][varno] = bytes;
+ object_sizes_set (osi, varno, unknown (object_size_type));
}
unsigned int varno = SSA_NAME_VERSION (dest);
unsigned HOST_WIDE_INT orig_bytes;
- if (object_sizes[object_size_type][varno] == unknown (object_size_type))
+ if (object_sizes_unknown_p (object_size_type, varno))
return false;
if (offset >= offset_limit)
{
- object_sizes[object_size_type][varno] = unknown (object_size_type);
+ object_sizes_set (osi, varno, unknown (object_size_type));
return false;
}
if (osi->pass == 0)
collect_object_sizes_for (osi, orig);
- orig_bytes = object_sizes[object_size_type][SSA_NAME_VERSION (orig)];
+ orig_bytes = object_sizes_get (osi, SSA_NAME_VERSION (orig));
if (orig_bytes != unknown (object_size_type))
orig_bytes = (offset > orig_bytes)
? HOST_WIDE_INT_0U : orig_bytes - offset;
- if ((object_size_type & OST_MINIMUM) == 0)
- {
- if (object_sizes[object_size_type][varno] < orig_bytes)
- {
- object_sizes[object_size_type][varno] = orig_bytes;
- osi->changed = true;
- }
- }
- else
- {
- if (object_sizes[object_size_type][varno] > orig_bytes)
- {
- object_sizes[object_size_type][varno] = orig_bytes;
- osi->changed = true;
- }
- }
+ osi->changed = object_sizes_set (osi, varno, orig_bytes);
+
return bitmap_bit_p (osi->reexamine, SSA_NAME_VERSION (orig));
}
else
gcc_unreachable ();
- if (object_sizes[object_size_type][varno] == unknown (object_size_type))
+ if (object_sizes_unknown_p (object_size_type, varno))
return false;
/* Handle PTR + OFFSET here. */
else
bytes = unknown (object_size_type);
- if ((object_size_type & OST_MINIMUM) == 0)
- {
- if (object_sizes[object_size_type][varno] < bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
- else
- {
- if (object_sizes[object_size_type][varno] > bytes)
- object_sizes[object_size_type][varno] = bytes;
- }
+ object_sizes_set (osi, varno, bytes);
return false;
}
gcc_assert (gimple_assign_rhs_code (stmt) == COND_EXPR);
- if (object_sizes[object_size_type][varno] == unknown (object_size_type))
+ if (object_sizes_unknown_p (object_size_type, varno))
return false;
then_ = gimple_assign_rhs2 (stmt);
else
expr_object_size (osi, var, then_);
- if (object_sizes[object_size_type][varno] == unknown (object_size_type))
+ if (object_sizes_unknown_p (object_size_type, varno))
return reexamine;
if (TREE_CODE (else_) == SSA_NAME)
{
if (bitmap_set_bit (osi->visited, varno))
{
- object_sizes[object_size_type][varno]
- = (object_size_type & OST_MINIMUM) ? -1 : 0;
+ /* Initialize to 0 for maximum size and M1U for minimum size so that
+ it gets immediately overridden. */
+ object_sizes_set_force (osi, varno,
+ unknown (object_size_type ^ OST_MINIMUM));
}
else
{
case GIMPLE_ASM:
/* Pointers defined by __asm__ statements can point anywhere. */
- object_sizes[object_size_type][varno] = unknown (object_size_type);
+ object_sizes_set (osi, varno, unknown (object_size_type));
break;
case GIMPLE_NOP:
expr_object_size (osi, var, SSA_NAME_VAR (var));
else
/* Uninitialized SSA names point nowhere. */
- object_sizes[object_size_type][varno] = unknown (object_size_type);
+ object_sizes_set (osi, varno, unknown (object_size_type));
break;
case GIMPLE_PHI:
{
tree rhs = gimple_phi_arg (stmt, i)->def;
- if (object_sizes[object_size_type][varno]
- == unknown (object_size_type))
+ if (object_sizes_unknown_p (object_size_type, varno))
break;
if (TREE_CODE (rhs) == SSA_NAME)
gcc_unreachable ();
}
- if (! reexamine
- || object_sizes[object_size_type][varno] == unknown (object_size_type))
+ if (! reexamine || object_sizes_unknown_p (object_size_type, varno))
{
bitmap_set_bit (computed[object_size_type], varno);
bitmap_clear_bit (osi->reexamine, varno);
--sp;
bitmap_clear_bit (osi->reexamine, *sp);
bitmap_set_bit (computed[osi->object_size_type], *sp);
- object_sizes[osi->object_size_type][*sp] = 0;
+ object_sizes_set_force (osi, *sp, 0);
if (*sp == varno)
break;
}
for (object_size_type = 0; object_size_type < OST_END; object_size_type++)
{
- object_sizes[object_size_type].safe_grow (num_ssa_names, true);
+ object_sizes_grow (object_size_type);
computed[object_size_type] = BITMAP_ALLOC (NULL);
}
for (object_size_type = 0; object_size_type < OST_END; object_size_type++)
{
- object_sizes[object_size_type].release ();
+ object_sizes_release (object_size_type);
BITMAP_FREE (computed[object_size_type]);
}
}