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 The main sparc backend driver file.
23 * @version $Id: bearch_TEMPLATE.c 26673 2009-10-01 16:43:13Z matze $
29 #include "lc_opts_enum.h"
31 #include "pseudo_irg.h"
38 #include "iroptimize.h"
47 #include "../bearch.h"
48 #include "../benode.h"
49 #include "../belower.h"
50 #include "../besched.h"
53 #include "../bemachine.h"
54 #include "../beilpsched.h"
55 #include "../bemodule.h"
57 #include "../bespillslots.h"
58 #include "../begnuas.h"
59 #include "../belistsched.h"
60 #include "../beflags.h"
62 #include "bearch_sparc_t.h"
64 #include "sparc_new_nodes.h"
65 #include "gen_sparc_regalloc_if.h"
66 #include "sparc_transform.h"
67 #include "sparc_emitter.h"
68 #include "sparc_map_regs.h"
70 DEBUG_ONLY(static firm_dbg_module_t *dbg = NULL;)
72 static arch_irn_class_t sparc_classify(const ir_node *irn)
78 static ir_entity *sparc_get_frame_entity(const ir_node *irn)
80 const sparc_attr_t *attr = get_sparc_attr_const(irn);
82 if (is_sparc_FrameAddr(irn)) {
83 const sparc_symconst_attr_t *attr = get_irn_generic_attr_const(irn);
87 if (attr->is_load_store) {
88 const sparc_load_store_attr_t *load_store_attr = get_sparc_load_store_attr_const(irn);
89 if (load_store_attr->is_frame_entity) {
90 return load_store_attr->entity;
97 static void sparc_set_frame_entity(ir_node *node, ir_entity *ent)
101 panic("sparc_set_frame_entity() called. This should not happen.");
102 /* TODO: set the ir_entity assigned to the frame */
106 * This function is called by the generic backend to correct offsets for
107 * nodes accessing the stack.
109 static void sparc_set_frame_offset(ir_node *irn, int offset)
111 if (is_sparc_FrameAddr(irn)) {
112 sparc_symconst_attr_t *attr = get_irn_generic_attr(irn);
113 attr->fp_offset += offset;
115 sparc_load_store_attr_t *attr = get_sparc_load_store_attr(irn);
116 assert(attr->base.is_load_store);
117 attr->offset += offset;
121 static int sparc_get_sp_bias(const ir_node *irn)
127 /* fill register allocator interface */
129 static const arch_irn_ops_t sparc_irn_ops = {
132 sparc_get_frame_entity,
133 sparc_set_frame_entity,
134 sparc_set_frame_offset,
136 NULL, /* get_inverse */
137 NULL, /* get_op_estimated_cost */
138 NULL, /* possible_memory_operand */
139 NULL, /* perform_memory_operand */
145 * Transforms the standard firm graph into
148 static void sparc_prepare_graph(void *self)
150 sparc_code_gen_t *cg = self;
152 /* transform FIRM into SPARC asm nodes */
153 sparc_transform_graph(cg);
156 be_dump(cg->irg, "-transformed", dump_ir_block_graph_sched);
162 * Called immediatly before emit phase.
164 static void sparc_finish_irg(void *self)
166 sparc_code_gen_t *cg = self;
167 ir_graph *irg = cg->irg;
169 dump_ir_block_graph_sched(irg, "-sparc-finished");
173 static ir_node *sparc_flags_remat(ir_node *node, ir_node *after)
178 if (is_Block(after)) {
181 block = get_nodes_block(after);
183 copy = exact_copy(node);
184 set_nodes_block(copy, block);
185 sched_add_after(after, copy);
189 static void sparc_before_ra(void *self)
191 sparc_code_gen_t *cg = self;
192 /* fixup flags register */
193 be_sched_fix_flags(cg->birg, &sparc_reg_classes[CLASS_sparc_flags], &sparc_flags_remat);
197 * transform reload node => load
199 static void transform_Reload(ir_node *node)
201 ir_graph *irg = get_irn_irg(node);
202 ir_node *block = get_nodes_block(node);
203 dbg_info *dbgi = get_irn_dbg_info(node);
204 ir_node *ptr = get_irg_frame(irg);
205 ir_node *mem = get_irn_n(node, be_pos_Reload_mem);
206 ir_mode *mode = get_irn_mode(node);
207 ir_entity *entity = be_get_frame_entity(node);
208 const arch_register_t *reg;
212 ir_node *sched_point = sched_prev(node);
214 load = new_bd_sparc_Load(dbgi, block, ptr, mem, mode, entity, false, 0, true);
215 sched_add_after(sched_point, load);
218 proj = new_rd_Proj(dbgi, block, load, mode, pn_sparc_Load_res);
220 reg = arch_get_irn_register(node);
221 arch_set_irn_register(proj, reg);
223 exchange(node, proj);
227 * transform spill node => store
229 static void transform_Spill(ir_node *node)
231 ir_graph *irg = get_irn_irg(node);
232 ir_node *block = get_nodes_block(node);
233 dbg_info *dbgi = get_irn_dbg_info(node);
234 ir_node *ptr = get_irg_frame(irg);
235 ir_node *mem = new_NoMem();
236 ir_node *val = get_irn_n(node, be_pos_Spill_val);
237 ir_mode *mode = get_irn_mode(val);
238 ir_entity *entity = be_get_frame_entity(node);
239 ir_node *sched_point;
242 sched_point = sched_prev(node);
243 store = new_bd_sparc_Store(dbgi, block, ptr, val, mem, mode, entity, false, 0, true);
245 sched_add_after(sched_point, store);
247 exchange(node, store);
251 * walker to transform be_Spill and be_Reload nodes
253 static void sparc_after_ra_walker(ir_node *block, void *data)
255 ir_node *node, *prev;
258 for (node = sched_last(block); !sched_is_begin(node); node = prev) {
259 prev = sched_prev(node);
261 if (be_is_Reload(node)) {
262 transform_Reload(node);
263 } else if (be_is_Spill(node)) {
264 transform_Spill(node);
270 static void sparc_after_ra(void *self)
272 sparc_code_gen_t *cg = self;
273 be_coalesce_spillslots(cg->birg);
275 irg_block_walk_graph(cg->irg, NULL, sparc_after_ra_walker, NULL);
281 * Emits the code, closes the output file and frees
282 * the code generator interface.
284 static void sparc_emit_and_done(void *self)
286 sparc_code_gen_t *cg = self;
287 ir_graph *irg = cg->irg;
289 sparc_gen_routine(cg, irg);
291 /* de-allocate code generator */
295 static void *sparc_cg_init(be_irg_t *birg);
297 static const arch_code_generator_if_t sparc_code_gen_if = {
299 NULL, /* get_pic_base hook */
300 NULL, /* before abi introduce hook */
302 NULL, /* spill hook */
303 sparc_before_ra, /* before register allocation hook */
304 sparc_after_ra, /* after register allocation hook */
310 * Initializes the code generator.
312 static void *sparc_cg_init(be_irg_t *birg)
314 static ir_type *int_tp = NULL;
315 sparc_isa_t *isa = (sparc_isa_t *)birg->main_env->arch_env;
316 sparc_code_gen_t *cg;
319 /* create an integer type with machine size */
320 int_tp = new_type_primitive(mode_Is);
323 cg = XMALLOC(sparc_code_gen_t);
324 cg->impl = &sparc_code_gen_if;
326 //cg->reg_set = new_set(arm_cmp_irn_reg_assoc, 1024);
329 //cg->int_tp = int_tp;
330 //cg->have_fp_insn = 0;
331 //cg->unknown_gp = NULL;
332 //cg->unknown_fpa = NULL;
333 cg->dump = (birg->main_env->options->dump_flags & DUMP_BE) ? 1 : 0;
335 FIRM_DBG_REGISTER(cg->mod, "firm.be.sparc.cg");
337 /* enter the current code generator */
340 return (arch_code_generator_t *)cg;
345 const arch_isa_if_t sparc_isa_if;
346 static sparc_isa_t sparc_isa_template = {
348 &sparc_isa_if, /* isa interface implementation */
349 &sparc_gp_regs[REG_SP], /* stack pointer register */
350 &sparc_gp_regs[REG_FP], /* base pointer register */
351 &sparc_reg_classes[CLASS_sparc_gp], /* link pointer register class */
352 -1, /* stack direction */
353 1, /* power of two stack alignment for calls, 2^2 == 4 */
354 NULL, /* main environment */
355 7, /* costs for a spill instruction */
356 5, /* costs for a reload instruction */
358 NULL /* current code generator */
362 * Initializes the backend ISA
364 static arch_env_t *sparc_init(FILE *outfile)
366 static int run_once = 0;
373 isa = XMALLOC(sparc_isa_t);
374 memcpy(isa, &sparc_isa_template, sizeof(*isa));
376 be_emit_init(outfile);
378 sparc_register_init();
379 sparc_create_opcodes(&sparc_irn_ops);
381 return &isa->arch_env;
387 * Closes the output file and frees the ISA structure.
389 static void sparc_done(void *self)
391 sparc_isa_t *isa = self;
393 /* emit now all global declarations */
394 be_gas_emit_decls(isa->arch_env.main_env, 0);
401 static unsigned sparc_get_n_reg_class(void)
406 static const arch_register_class_t *sparc_get_reg_class(unsigned i)
408 assert(i < N_CLASSES);
409 return &sparc_reg_classes[i];
415 * Get the register class which shall be used to store a value of a given mode.
416 * @param self The this pointer.
417 * @param mode The mode in question.
418 * @return A register class which can hold values of the given mode.
420 const arch_register_class_t *sparc_get_reg_class_for_mode(const ir_mode *mode)
422 if (mode_is_float(mode))
423 return &sparc_reg_classes[CLASS_sparc_fp];
425 return &sparc_reg_classes[CLASS_sparc_gp];
431 be_abi_call_flags_bits_t flags;
432 const arch_env_t *arch_env;
436 static void *sparc_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, ir_graph *irg)
438 sparc_abi_env_t *env = XMALLOC(sparc_abi_env_t);
439 be_abi_call_flags_t fl = be_abi_call_get_flags(call);
440 env->flags = fl.bits;
442 env->arch_env = arch_env;
447 * Get the between type for that call.
448 * @param self The callback object.
449 * @return The between type of for that call.
451 static ir_type *sparc_get_between_type(void *self)
453 static ir_type *between_type = NULL;
456 if (between_type == NULL) {
457 between_type = new_type_class(new_id_from_str("sparc_between_type"));
458 set_type_size_bytes(between_type, 0);
465 * Build the prolog, return the BASE POINTER register
467 static const arch_register_t *sparc_abi_prologue(void *self, ir_node **mem,
468 pmap *reg_map, int *stack_bias)
470 sparc_abi_env_t *env = self;
475 if(env->flags.try_omit_fp)
476 return env->arch_env->sp;
478 //panic("framepointer not implemented yet");
479 return env->arch_env->bp;
482 /* Build the epilog */
483 static void sparc_abi_epilogue(void *self, ir_node *bl, ir_node **mem,
492 static const be_abi_callbacks_t sparc_abi_callbacks = {
495 sparc_get_between_type,
501 * Get the ABI restrictions for procedure calls.
502 * @param self The this pointer.
503 * @param method_type The type of the method (procedure) in question.
504 * @param abi The abi object to be modified
506 void sparc_get_call_abi(const void *self, ir_type *method_type,
511 int i, n = get_method_n_params(method_type);
512 be_abi_call_flags_t call_flags;
515 /* set abi flags for calls */
516 call_flags.bits.left_to_right = 0;
517 call_flags.bits.store_args_sequential = 1;
518 call_flags.bits.try_omit_fp = 1;
519 call_flags.bits.fp_free = 0;
520 call_flags.bits.call_has_imm = 1;
522 /* set stack parameter passing style */
523 be_abi_call_set_flags(abi, call_flags, &sparc_abi_callbacks);
525 for (i = 0; i < n; i++) {
526 /* reg = get reg for param i; */
527 /* be_abi_call_param_reg(abi, i, reg); */
529 /* pass args 0-5 via registers, remaining via stack */
531 be_abi_call_param_reg(abi, i, sparc_get_RegParam_reg(i));
533 tp = get_method_param_type(method_type, i);
534 mode = get_type_mode(tp);
535 be_abi_call_param_stack(abi, i, mode, 4, 0, 0);
539 /* TODO: set correct return register */
540 /* default: return value is in O0 resp. F0 */
541 if (get_method_n_ress(method_type) > 0) {
542 tp = get_method_res_type(method_type, 0);
543 mode = get_type_mode(tp);
545 be_abi_call_res_reg(abi, 0,
546 mode_is_float(mode) ? &sparc_fp_regs[REG_F0] : &sparc_gp_regs[REG_O0]);
550 int sparc_to_appear_in_schedule(void *block_env, const ir_node *irn)
554 if(!is_sparc_irn(irn))
561 * Initializes the code generator interface.
563 static const arch_code_generator_if_t *sparc_get_code_generator_if(
567 return &sparc_code_gen_if;
570 list_sched_selector_t sparc_sched_selector;
573 * Returns the reg_pressure scheduler with to_appear_in_schedule() overloaded
575 static const list_sched_selector_t *sparc_get_list_sched_selector(
576 const void *self, list_sched_selector_t *selector)
581 sparc_sched_selector = trivial_selector;
582 sparc_sched_selector.to_appear_in_schedule = sparc_to_appear_in_schedule;
583 return &sparc_sched_selector;
586 static const ilp_sched_selector_t *sparc_get_ilp_sched_selector(
594 * Returns the necessary byte alignment for storing a register of given class.
596 static int sparc_get_reg_class_alignment(const arch_register_class_t *cls)
598 ir_mode *mode = arch_register_class_mode(cls);
599 return get_mode_size_bytes(mode);
603 * Returns the libFirm configuration parameter for this backend.
605 static const backend_params *sparc_get_backend_params(void) {
606 static backend_params p = {
607 0, /* no dword lowering */
608 0, /* no inline assembly */
609 NULL, /* will be set later */
610 NULL, /* no creator function */
611 NULL, /* context for create_intrinsic_fkt */
612 NULL, /* parameter for if conversion */
613 NULL, /* float arithmetic mode */
614 0, /* no trampoline support: size 0 */
615 0, /* no trampoline support: align 0 */
616 NULL, /* no trampoline support: no trampoline builder */
617 4 /* alignment of stack parameter: typically 4 (32bit) or 8 (64bit) */
622 static const be_execution_unit_t ***sparc_get_allowed_execution_units(
631 static const be_machine_t *sparc_get_machine(const void *self)
639 static ir_graph **sparc_get_backend_irg_list(const void *self,
647 static asm_constraint_flags_t sparc_parse_asm_constraint(const char **c)
650 return ASM_CONSTRAINT_FLAG_INVALID;
653 static int sparc_is_valid_clobber(const char *clobber)
659 const arch_isa_if_t sparc_isa_if = {
662 NULL, /* handle intrinsics */
663 sparc_get_n_reg_class,
665 sparc_get_reg_class_for_mode,
667 sparc_get_code_generator_if,
668 sparc_get_list_sched_selector,
669 sparc_get_ilp_sched_selector,
670 sparc_get_reg_class_alignment,
671 sparc_get_backend_params,
672 sparc_get_allowed_execution_units,
674 sparc_get_backend_irg_list,
675 NULL, /* mark remat */
676 sparc_parse_asm_constraint,
677 sparc_is_valid_clobber
680 void be_init_arch_sparc(void)
682 be_register_isa_if("sparc", &sparc_isa_if);
683 FIRM_DBG_REGISTER(dbg, "firm.be.sparc.cg");
684 sparc_init_transform();
685 sparc_init_emitter();
687 BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_sparc);