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 Processor architecture specification.
23 * @author Sebastian Hack
39 #include "raw_bitset.h"
43 /* Initialize the architecture environment struct. */
44 arch_env_t *arch_env_init(const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env)
46 arch_env_t *arch_env = isa_if->init(file_handle);
47 arch_env->main_env = main_env;
52 * Put all registers in a class into a bitset.
53 * @param cls The class.
54 * @param bs The bitset.
55 * @return The number of registers in the class.
57 static int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs)
59 int i, n = cls->n_regs;
60 for (i = n - 1; i >= 0; --i)
66 * Get the isa responsible for a node.
67 * @param irn The node to get the responsible isa for.
68 * @return The irn operations given by the responsible isa.
70 static INLINE const arch_irn_ops_t *get_irn_ops(const ir_node *irn)
73 const arch_irn_ops_t *be_ops;
76 irn = get_Proj_pred(irn);
77 assert(!is_Proj(irn));
80 ops = get_irn_op(irn);
81 be_ops = get_op_ops(ops)->be_ops;
87 const arch_register_req_t *arch_get_register_req(const arch_env_t *env,
88 const ir_node *irn, int pos)
90 const arch_irn_ops_t *ops = get_irn_ops(irn);
91 (void)env; // TODO remove parameter
92 return ops->get_irn_reg_req(irn, pos);
95 void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset)
97 const arch_irn_ops_t *ops = get_irn_ops(irn);
98 (void)env; // TODO remove parameter
99 ops->set_frame_offset(irn, offset);
102 ir_entity *arch_get_frame_entity(const arch_env_t *env, const ir_node *irn)
104 const arch_irn_ops_t *ops = get_irn_ops(irn);
105 (void)env; // TODO remove parameter
106 return ops->get_frame_entity(irn);
109 void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, ir_entity *ent)
111 const arch_irn_ops_t *ops = get_irn_ops(irn);
112 (void)env; // TODO remove parameter
113 ops->set_frame_entity(irn, ent);
116 int arch_get_sp_bias(const arch_env_t *env, ir_node *irn)
118 const arch_irn_ops_t *ops = get_irn_ops(irn);
119 (void)env; // TODO remove parameter
120 return ops->get_sp_bias(irn);
123 arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack)
125 const arch_irn_ops_t *ops = get_irn_ops(irn);
126 (void)env; // TODO remove parameter
128 if(ops->get_inverse) {
129 return ops->get_inverse(irn, i, inverse, obstack);
135 int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i) {
136 const arch_irn_ops_t *ops = get_irn_ops(irn);
137 (void)env; // TODO remove parameter
139 if(ops->possible_memory_operand) {
140 return ops->possible_memory_operand(irn, i);
146 void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i) {
147 const arch_irn_ops_t *ops = get_irn_ops(irn);
148 (void)env; // TODO remove parameter
150 if(ops->perform_memory_operand) {
151 ops->perform_memory_operand(irn, spill, i);
157 int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn)
159 const arch_irn_ops_t *ops = get_irn_ops(irn);
160 (void)env; // TODO remove parameter
162 if(ops->get_op_estimated_cost) {
163 return ops->get_op_estimated_cost(irn);
169 int arch_is_possible_memory_operand(const arch_env_t *env, const ir_node *irn, int i)
171 const arch_irn_ops_t *ops = get_irn_ops(irn);
172 (void)env; // TODO remove parameter
174 if(ops->possible_memory_operand) {
175 return ops->possible_memory_operand(irn, i);
181 int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs)
183 const arch_irn_ops_t *ops = get_irn_ops(irn);
184 const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos);
185 (void)env; // TODO remove parameter
187 if(req->type == arch_register_req_type_none) {
188 bitset_clear_all(bs);
192 if(arch_register_req_is(req, limited)) {
193 rbitset_copy_to_bitset(req->limited, bs);
194 return bitset_popcnt(bs);
197 arch_register_class_put(req->cls, bs);
198 return req->cls->n_regs;
201 void arch_put_non_ignore_regs(const arch_register_class_t *cls, bitset_t *bs)
205 for(i = 0; i < cls->n_regs; ++i) {
206 if(!arch_register_type_is(&cls->regs[i], ignore))
211 int arch_is_register_operand(const arch_env_t *env,
212 const ir_node *irn, int pos)
214 const arch_irn_ops_t *ops = get_irn_ops(irn);
215 const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos);
216 (void)env; // TODO remove parameter
221 int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn,
222 int pos, const arch_register_t *reg)
224 const arch_register_req_t *req;
226 req = arch_get_register_req(env, irn, pos);
228 if(req->type == arch_register_req_type_none)
231 if(arch_register_req_is(req, limited)) {
232 assert(arch_register_get_class(reg) == req->cls);
233 return rbitset_is_set(req->limited, arch_register_get_index(reg));
236 return req->cls == reg->reg_class;
239 const arch_register_class_t *
240 arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos)
242 const arch_irn_ops_t *ops = get_irn_ops(irn);
243 const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos);
244 (void)env; // TODO remove parameter
246 assert(req->type != arch_register_req_type_none || req->cls == NULL);
251 extern const arch_register_t *
252 arch_get_irn_register(const arch_env_t *env, const ir_node *irn)
254 const arch_irn_ops_t *ops = get_irn_ops(irn);
255 (void)env; // TODO remove parameter
256 return ops->get_irn_reg(irn);
259 extern void arch_set_irn_register(const arch_env_t *env,
260 ir_node *irn, const arch_register_t *reg)
262 const arch_irn_ops_t *ops = get_irn_ops(irn);
263 (void)env; // TODO remove parameter
264 ops->set_irn_reg(irn, reg);
267 extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn)
269 const arch_irn_ops_t *ops = get_irn_ops(irn);
270 (void)env; // TODO remove parameter
271 return ops->classify(irn);
274 extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn)
276 const arch_irn_ops_t *ops = get_irn_ops(irn);
277 (void)env; // TODO remove parameter
278 return ops->get_flags(irn);
281 extern const char *arch_irn_flag_str(arch_irn_flags_t fl)
284 #define XXX(x) case arch_irn_flags_ ## x: return #x;
287 XXX(rematerializable);
296 extern char *arch_register_req_format(char *buf, size_t len,
297 const arch_register_req_t *req,
301 snprintf(buf, len, "class: %s", req->cls->name);
303 if(arch_register_req_is(req, limited)) {
304 unsigned n_regs = req->cls->n_regs;
307 strncat(buf, " limited:", len);
308 for(i = 0; i < n_regs; ++i) {
309 if(rbitset_is_set(req->limited, i)) {
310 const arch_register_t *reg = &req->cls->regs[i];
311 strncat(buf, " ", len);
312 strncat(buf, reg->name, len);
317 if(arch_register_req_is(req, should_be_same)) {
318 const unsigned other = req->other_same;
321 ir_snprintf(tmp, sizeof(tmp), " same to:");
322 for (i = 0; 1U << i <= other; ++i) {
323 if (other & (1U << i)) {
324 ir_snprintf(tmp, sizeof(tmp), " %+F", get_irn_n(skip_Proj_const(node), i));
325 strncat(buf, tmp, len);
330 if (arch_register_req_is(req, must_be_different)) {
331 const unsigned other = req->other_different;
334 ir_snprintf(tmp, sizeof(tmp), " different from:");
335 for (i = 0; 1U << i <= other; ++i) {
336 if (other & (1U << i)) {
337 ir_snprintf(tmp, sizeof(tmp), " %+F", get_irn_n(skip_Proj_const(node), i));
338 strncat(buf, tmp, len);
346 static const arch_register_req_t no_requirement = {
347 arch_register_req_type_none,
353 const arch_register_req_t *arch_no_register_req = &no_requirement;