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
32 #include "irbackedge_t.h"
35 #include "irverify_t.h"
36 #include "reassoc_t.h"
40 void be_init_op(void);
42 /** the available next opcode */
43 static unsigned next_iro = iro_MaxOpcode;
46 * Copies all attributes stored in the old node to the new node.
47 * Assumes both have the same opcode and sufficient size.
49 void default_copy_attr(ir_graph *irg, const ir_node *old_node,
52 unsigned size = firm_add_node_size;
55 assert(get_irn_op(old_node) == get_irn_op(new_node));
56 memcpy(&new_node->attr, &old_node->attr, get_op_attr_size(get_irn_op(old_node)));
59 /* copy additional node data */
60 memcpy(get_irn_data(new_node, void, size), get_irn_data(old_node, void, size), size);
65 * Copies all Call attributes stored in the old node to the new node.
67 static void call_copy_attr(ir_graph *irg, const ir_node *old_node,
70 default_copy_attr(irg, old_node, new_node);
71 remove_Call_callee_arr(new_node);
75 * Copies all Block attributes stored in the old node to the new node.
77 static void block_copy_attr(ir_graph *irg, const ir_node *old_node,
80 default_copy_attr(irg, old_node, new_node);
81 new_node->attr.block.irg.irg = irg;
82 new_node->attr.block.phis = NULL;
83 new_node->attr.block.cg_backedge = NULL;
84 new_node->attr.block.backedge = new_backedge_arr(irg->obst, get_irn_arity(new_node));
85 new_node->attr.block.block_visited = 0;
86 memset(&new_node->attr.block.dom, 0, sizeof(new_node->attr.block.dom));
87 memset(&new_node->attr.block.pdom, 0, sizeof(new_node->attr.block.pdom));
88 /* It should be safe to copy the entity here, as it has no back-link to the old block.
89 * It serves just as a label number, so copying a labeled block results in an exact copy.
90 * This is at least what we need for DCE to work. */
91 new_node->attr.block.entity = old_node->attr.block.entity;
92 new_node->attr.block.phis = NULL;
93 INIT_LIST_HEAD(&new_node->attr.block.succ_head);
97 * Copies all phi attributes stored in old node to the new node
99 static void phi_copy_attr(ir_graph *irg, const ir_node *old_node,
102 default_copy_attr(irg, old_node, new_node);
103 new_node->attr.phi.next = NULL;
104 new_node->attr.phi.u.backedge = new_backedge_arr(irg->obst, get_irn_arity(new_node));
108 * Copies all ASM attributes stored in old node to the new node
110 static void ASM_copy_attr(ir_graph *irg, const ir_node *old_node,
113 default_copy_attr(irg, old_node, new_node);
114 new_node->attr.assem.input_constraints = DUP_ARR_D(ir_asm_constraint, irg->obst, old_node->attr.assem.input_constraints);
115 new_node->attr.assem.output_constraints = DUP_ARR_D(ir_asm_constraint, irg->obst, old_node->attr.assem.output_constraints);
116 new_node->attr.assem.clobbers = DUP_ARR_D(ident*, irg->obst, old_node->attr.assem.clobbers);
119 static void switch_copy_attr(ir_graph *irg, const ir_node *old_node,
122 const ir_switch_table *table = get_Switch_table(old_node);
123 new_node->attr.switcha.table = ir_switch_table_duplicate(irg, table);
124 new_node->attr.switcha.n_outs = old_node->attr.switcha.n_outs;
128 * Sets the default copy_attr operation for an ir_ops
130 * @param code the opcode for the default operation
131 * @param ops the operations initialized
136 static ir_op_ops *firm_set_default_copy_attr(unsigned code, ir_op_ops *ops)
139 case iro_Call: ops->copy_attr = call_copy_attr; break;
140 case iro_Block: ops->copy_attr = block_copy_attr; break;
141 case iro_Phi: ops->copy_attr = phi_copy_attr; break;
142 case iro_ASM: ops->copy_attr = ASM_copy_attr; break;
143 case iro_Switch: ops->copy_attr = switch_copy_attr; break;
145 if (ops->copy_attr == NULL)
146 ops->copy_attr = default_copy_attr;
151 /* Creates a new ir operation. */
152 ir_op *new_ir_op(unsigned code, const char *name, op_pin_state p,
153 unsigned flags, op_arity opar, int op_index, size_t attr_size,
154 const ir_op_ops *ops)
156 ir_op *res = XMALLOCZ(ir_op);
159 res->name = new_id_from_chars(name, strlen(name));
161 res->attr_size = attr_size;
164 res->op_index = op_index;
169 else /* no given ops, set all operations to NULL */
170 memset(&res->ops, 0, sizeof(res->ops));
172 firm_set_default_operations(code, &res->ops);
173 firm_set_default_copy_attr(code, &res->ops);
174 firm_set_default_verifier(code, &res->ops);
175 firm_set_default_reassoc(code, &res->ops);
183 void free_ir_op(ir_op *code)
185 hook_free_ir_op(code);
187 remove_irp_opcode(code);
191 void ir_op_set_fragile_indices(ir_op *op, int fragile_mem_index,
192 int pn_x_regular, int pn_x_except)
194 op->fragile_mem_index = fragile_mem_index;
195 op->pn_x_regular = pn_x_regular;
196 op->pn_x_except = pn_x_except;
199 /* Returns the string for the opcode. */
200 const char *get_op_name (const ir_op *op)
202 return get_id_str(op->name);
205 unsigned (get_op_code)(const ir_op *op)
207 return get_op_code_(op);
210 ident *(get_op_ident)(const ir_op *op)
212 return get_op_ident_(op);
215 const char *get_op_pin_state_name(op_pin_state s)
218 #define XXX(s) case s: return #s
219 XXX(op_pin_state_floats);
220 XXX(op_pin_state_pinned);
221 XXX(op_pin_state_exc_pinned);
222 XXX(op_pin_state_mem_pinned);
228 op_pin_state (get_op_pinned)(const ir_op *op)
230 return get_op_pinned_(op);
233 /* Sets op_pin_state_pinned in the opcode. Setting it to floating has no effect
234 for Phi, Block and control flow nodes. */
235 void set_op_pinned(ir_op *op, op_pin_state pinned)
237 if (op == op_Block || op == op_Phi || is_op_cfopcode(op)) return;
238 op->pin_state = pinned;
241 /* retrieve the next free opcode */
242 unsigned get_next_ir_opcode(void)
247 /* Returns the next free n IR opcode number, allows to register a bunch of user ops */
248 unsigned get_next_ir_opcodes(unsigned num)
250 unsigned base = next_iro;
255 /* Returns the generic function pointer from an ir operation. */
256 op_func (get_generic_function_ptr)(const ir_op *op)
258 return get_generic_function_ptr_(op);
261 /* Store a generic function pointer into an ir operation. */
262 void (set_generic_function_ptr)(ir_op *op, op_func func)
264 set_generic_function_ptr_(op, func);
267 /* Returns the ir_op_ops of an ir_op. */
268 const ir_op_ops *(get_op_ops)(const ir_op *op)
270 return get_op_ops_(op);
273 irop_flags get_op_flags(const ir_op *op)
275 return (irop_flags)op->flags;
278 #include "gen_irop.c.inl"