static inline tree
referenced_var (unsigned int uid)
{
- tree var = referenced_var_lookup (uid);
+ tree var = referenced_var_lookup (cfun, uid);
gcc_assert (var || uid == 0);
return var;
}
referenced_vars hashtable, and return that variable. */
static inline tree
-first_referenced_var (referenced_var_iterator *iter)
+first_referenced_var (struct function *fn, referenced_var_iterator *iter)
{
return (tree) first_htab_element (&iter->hti,
- gimple_referenced_vars (cfun));
+ gimple_referenced_vars (fn));
}
/* Return true if we have hit the end of the referenced variables ITER is
set_is_used (tree var)
{
var_ann_t ann = get_var_ann (var);
- ann->used = 1;
+ ann->used = true;
}
+/* Clear VAR's used flag. */
+
+static inline void
+clear_is_used (tree var)
+{
+ var_ann_t ann = var_ann (var);
+ ann->used = false;
+}
+
+/* Return true if VAR is marked as used. */
+
+static inline bool
+is_used_p (tree var)
+{
+ var_ann_t ann = var_ann (var);
+ return ann->used;
+}
/* Return true if T (assumed to be a DECL) is a global variable.
A variable is considered global if its storage is not automatic. */
return make_ssa_name_fn (cfun, var, stmt);
}
+/* Returns the base object and a constant BITS_PER_UNIT offset in *POFFSET that
+ denotes the starting address of the memory access EXP.
+ Returns NULL_TREE if the offset is not constant or any component
+ is not BITS_PER_UNIT-aligned.
+ VALUEIZE if non-NULL is used to valueize SSA names. It should return
+ its argument or a constant if the argument is known to be constant. */
+
+static inline tree
+get_addr_base_and_unit_offset_1 (tree exp, HOST_WIDE_INT *poffset,
+ tree (*valueize) (tree))
+{
+ HOST_WIDE_INT byte_offset = 0;
+
+ /* Compute cumulative byte-offset for nested component-refs and array-refs,
+ and find the ultimate containing object. */
+ while (1)
+ {
+ switch (TREE_CODE (exp))
+ {
+ case BIT_FIELD_REF:
+ return NULL_TREE;
+
+ case COMPONENT_REF:
+ {
+ tree field = TREE_OPERAND (exp, 1);
+ tree this_offset = component_ref_field_offset (exp);
+ HOST_WIDE_INT hthis_offset;
+
+ if (!this_offset
+ || TREE_CODE (this_offset) != INTEGER_CST
+ || (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ % BITS_PER_UNIT))
+ return NULL_TREE;
+
+ hthis_offset = TREE_INT_CST_LOW (this_offset);
+ hthis_offset += (TREE_INT_CST_LOW (DECL_FIELD_BIT_OFFSET (field))
+ / BITS_PER_UNIT);
+ byte_offset += hthis_offset;
+ }
+ break;
+
+ case ARRAY_REF:
+ case ARRAY_RANGE_REF:
+ {
+ tree index = TREE_OPERAND (exp, 1);
+ tree low_bound, unit_size;
+
+ if (valueize
+ && TREE_CODE (index) == SSA_NAME)
+ index = (*valueize) (index);
+
+ /* If the resulting bit-offset is constant, track it. */
+ if (TREE_CODE (index) == INTEGER_CST
+ && (low_bound = array_ref_low_bound (exp),
+ TREE_CODE (low_bound) == INTEGER_CST)
+ && (unit_size = array_ref_element_size (exp),
+ TREE_CODE (unit_size) == INTEGER_CST))
+ {
+ HOST_WIDE_INT hindex = TREE_INT_CST_LOW (index);
+
+ hindex -= TREE_INT_CST_LOW (low_bound);
+ hindex *= TREE_INT_CST_LOW (unit_size);
+ byte_offset += hindex;
+ }
+ else
+ return NULL_TREE;
+ }
+ break;
+
+ case REALPART_EXPR:
+ break;
+
+ case IMAGPART_EXPR:
+ byte_offset += TREE_INT_CST_LOW (TYPE_SIZE_UNIT (TREE_TYPE (exp)));
+ break;
+
+ case VIEW_CONVERT_EXPR:
+ break;
+
+ case MEM_REF:
+ {
+ tree base = TREE_OPERAND (exp, 0);
+ if (valueize
+ && TREE_CODE (base) == SSA_NAME)
+ base = (*valueize) (base);
+
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (base) == ADDR_EXPR)
+ {
+ if (!integer_zerop (TREE_OPERAND (exp, 1)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (base, 0);
+ }
+ goto done;
+ }
+
+ case TARGET_MEM_REF:
+ {
+ tree base = TREE_OPERAND (exp, 0);
+ if (valueize
+ && TREE_CODE (base) == SSA_NAME)
+ base = (*valueize) (base);
+
+ /* Hand back the decl for MEM[&decl, off]. */
+ if (TREE_CODE (base) == ADDR_EXPR)
+ {
+ if (TMR_INDEX (exp) || TMR_INDEX2 (exp))
+ return NULL_TREE;
+ if (!integer_zerop (TMR_OFFSET (exp)))
+ {
+ double_int off = mem_ref_offset (exp);
+ gcc_assert (off.high == -1 || off.high == 0);
+ byte_offset += double_int_to_shwi (off);
+ }
+ exp = TREE_OPERAND (base, 0);
+ }
+ goto done;
+ }
+
+ default:
+ goto done;
+ }
+
+ exp = TREE_OPERAND (exp, 0);
+ }
+done:
+
+ *poffset = byte_offset;
+ return exp;
+}
+
#endif /* _TREE_FLOW_INLINE_H */