2 * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved.
4 * This file is part of libFirm.
6 * This file may be distributed and/or modified under the terms of the
7 * GNU General Public License version 2 as published by the Free Software
8 * Foundation and appearing in the file LICENSE.GPL included in the
9 * packaging of this file.
11 * Licensees holding valid libFirm Professional Edition licenses may use
12 * this file in accordance with the libFirm Commercial License.
13 * Agreement provided with the Software.
15 * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
16 * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * @brief Representation of opcode of intermediate operation.
23 * @author Christian Schaefer, Goetz Lindenmaier, Michael Beck
33 #include "irbackedge_t.h"
36 #include "irverify_t.h"
37 #include "reassoc_t.h"
41 void be_init_op(void);
43 /** the available next opcode */
44 static unsigned next_iro = iro_MaxOpcode;
47 * Copies all attributes stored in the old node to the new node.
48 * Assumes both have the same opcode and sufficient size.
50 void default_copy_attr(ir_graph *irg, const ir_node *old_node,
53 unsigned size = firm_add_node_size;
56 assert(get_irn_op(old_node) == get_irn_op(new_node));
57 memcpy(&new_node->attr, &old_node->attr, get_op_attr_size(get_irn_op(old_node)));
60 /* copy additional node data */
61 memcpy(get_irn_data(new_node, void, size), get_irn_data(old_node, void, size), size);
66 * Copies all Call attributes stored in the old node to the new node.
68 static void call_copy_attr(ir_graph *irg, const ir_node *old_node,
71 default_copy_attr(irg, old_node, new_node);
72 remove_Call_callee_arr(new_node);
76 * Copies all Block attributes stored in the old node to the new node.
78 static void block_copy_attr(ir_graph *irg, const ir_node *old_node,
81 default_copy_attr(irg, old_node, new_node);
82 new_node->attr.block.irg.irg = irg;
83 new_node->attr.block.phis = NULL;
84 new_node->attr.block.cg_backedge = NULL;
85 new_node->attr.block.backedge = new_backedge_arr(irg->obst, get_irn_arity(new_node));
86 new_node->attr.block.block_visited = 0;
87 memset(&new_node->attr.block.dom, 0, sizeof(new_node->attr.block.dom));
88 memset(&new_node->attr.block.pdom, 0, sizeof(new_node->attr.block.pdom));
89 /* It should be safe to copy the entity here, as it has no back-link to the old block.
90 * It serves just as a label number, so copying a labeled block results in an exact copy.
91 * This is at least what we need for DCE to work. */
92 new_node->attr.block.entity = old_node->attr.block.entity;
93 new_node->attr.block.phis = NULL;
94 INIT_LIST_HEAD(&new_node->attr.block.succ_head);
98 * Copies all phi attributes stored in old node to the new node
100 static void phi_copy_attr(ir_graph *irg, const ir_node *old_node,
103 default_copy_attr(irg, old_node, new_node);
104 new_node->attr.phi.next = NULL;
105 new_node->attr.phi.u.backedge = new_backedge_arr(irg->obst, get_irn_arity(new_node));
109 * Copies all ASM attributes stored in old node to the new node
111 static void ASM_copy_attr(ir_graph *irg, const ir_node *old_node,
114 default_copy_attr(irg, old_node, new_node);
115 new_node->attr.assem.input_constraints = DUP_ARR_D(ir_asm_constraint, irg->obst, old_node->attr.assem.input_constraints);
116 new_node->attr.assem.output_constraints = DUP_ARR_D(ir_asm_constraint, irg->obst, old_node->attr.assem.output_constraints);
117 new_node->attr.assem.clobbers = DUP_ARR_D(ident*, irg->obst, old_node->attr.assem.clobbers);
121 * Sets the default copy_attr operation for an ir_ops
123 * @param code the opcode for the default operation
124 * @param ops the operations initialized
129 static ir_op_ops *firm_set_default_copy_attr(unsigned code, ir_op_ops *ops)
133 ops->copy_attr = call_copy_attr;
136 ops->copy_attr = block_copy_attr;
139 ops->copy_attr = phi_copy_attr;
142 ops->copy_attr = ASM_copy_attr;
145 /* not allowed to be NULL */
146 if (! ops->copy_attr)
147 ops->copy_attr = default_copy_attr;
152 /* Creates a new ir operation. */
153 ir_op *new_ir_op(unsigned code, const char *name, op_pin_state p,
154 unsigned flags, op_arity opar, int op_index, size_t attr_size,
155 const ir_op_ops *ops)
157 ir_op *res = XMALLOCZ(ir_op);
160 res->name = new_id_from_chars(name, strlen(name));
162 res->attr_size = attr_size;
165 res->op_index = op_index;
170 else /* no given ops, set all operations to NULL */
171 memset(&res->ops, 0, sizeof(res->ops));
173 firm_set_default_operations(code, &res->ops);
174 firm_set_default_copy_attr(code, &res->ops);
175 firm_set_default_verifier(code, &res->ops);
176 firm_set_default_reassoc(code, &res->ops);
184 void free_ir_op(ir_op *code)
186 hook_free_ir_op(code);
188 remove_irp_opcode(code);
192 void ir_op_set_fragile_indices(ir_op *op, int fragile_mem_index,
193 int pn_x_regular, int pn_x_except)
195 op->fragile_mem_index = fragile_mem_index;
196 op->pn_x_regular = pn_x_regular;
197 op->pn_x_except = pn_x_except;
200 /* Returns the string for the opcode. */
201 const char *get_op_name (const ir_op *op)
203 return get_id_str(op->name);
206 unsigned (get_op_code)(const ir_op *op)
208 return _get_op_code(op);
211 ident *(get_op_ident)(const ir_op *op)
213 return _get_op_ident(op);
216 const char *get_op_pin_state_name(op_pin_state s)
219 #define XXX(s) case s: return #s
220 XXX(op_pin_state_floats);
221 XXX(op_pin_state_pinned);
222 XXX(op_pin_state_exc_pinned);
223 XXX(op_pin_state_mem_pinned);
229 op_pin_state (get_op_pinned)(const ir_op *op)
231 return _get_op_pinned(op);
234 /* Sets op_pin_state_pinned in the opcode. Setting it to floating has no effect
235 for Phi, Block and control flow nodes. */
236 void set_op_pinned(ir_op *op, op_pin_state pinned)
238 if (op == op_Block || op == op_Phi || is_op_cfopcode(op)) return;
239 op->pin_state = pinned;
242 /* retrieve the next free opcode */
243 unsigned get_next_ir_opcode(void)
248 /* Returns the next free n IR opcode number, allows to register a bunch of user ops */
249 unsigned get_next_ir_opcodes(unsigned num)
251 unsigned base = next_iro;
256 /* Returns the generic function pointer from an ir operation. */
257 op_func (get_generic_function_ptr)(const ir_op *op)
259 return _get_generic_function_ptr(op);
262 /* Store a generic function pointer into an ir operation. */
263 void (set_generic_function_ptr)(ir_op *op, op_func func)
265 _set_generic_function_ptr(op, func);
268 /* Returns the ir_op_ops of an ir_op. */
269 const ir_op_ops *(get_op_ops)(const ir_op *op)
271 return _get_op_ops(op);
274 irop_flags get_op_flags(const ir_op *op)
276 return (irop_flags)op->flags;
279 #include "gen_irop.c.inl"