--- /dev/null
+
+#include "irgraph_t.h"
+#include "irmode_t.h"
+#include "irnode_t.h"
+
+#include "besched_t.h"
+#include "beinsn_t.h"
+
+be_insn_t *be_scan_insn(const be_insn_env_t *env, ir_node *irn)
+{
+ const arch_env_t *arch_env = env->aenv;
+ struct obstack *obst = env->obst;
+ be_operand_t o;
+ be_insn_t *insn;
+ int i, n;
+ int pre_colored = 0;
+
+ insn = obstack_alloc(obst, sizeof(insn[0]));
+ memset(insn, 0, sizeof(insn[0]));
+
+ insn->irn = irn;
+ insn->next_insn = sched_next(irn);
+ if(get_irn_mode(irn) == mode_T) {
+ ir_node *p;
+
+ for(p = sched_next(irn); is_Proj(p); p = sched_next(p)) {
+ if(arch_irn_consider_in_reg_alloc(arch_env, env->cls, p)) {
+ arch_get_register_req(arch_env, &o.req, p, -1);
+ o.carrier = p;
+ o.irn = irn;
+ o.pos = -(get_Proj_proj(p) + 1);
+ o.partner = NULL;
+ o.has_constraints = arch_register_req_is(&o.req, limited);
+ obstack_grow(obst, &o, sizeof(o));
+ insn->n_ops++;
+ insn->out_constraints |= o.has_constraints;
+ pre_colored += arch_get_irn_register(arch_env, p) != NULL;
+ }
+ }
+
+ insn->next_insn = p;
+ }
+
+ else if(arch_irn_consider_in_reg_alloc(arch_env, env->cls, irn)) {
+ arch_get_register_req(arch_env, &o.req, irn, -1);
+ o.carrier = irn;
+ o.irn = irn;
+ o.pos = -1;
+ o.partner = NULL;
+ o.has_constraints = arch_register_req_is(&o.req, limited);
+ obstack_grow(obst, &o, sizeof(o));
+ insn->n_ops++;
+ insn->out_constraints |= o.has_constraints;
+ pre_colored += arch_get_irn_register(arch_env, irn) != NULL;
+ }
+
+ insn->pre_colored = pre_colored == insn->n_ops && insn->n_ops > 0;
+ insn->use_start = insn->n_ops;
+
+ for(i = 0, n = get_irn_arity(irn); i < n; ++i) {
+ ir_node *op = get_irn_n(irn, i);
+
+ if(arch_irn_consider_in_reg_alloc(arch_env, env->cls, op)) {
+ arch_get_register_req(arch_env, &o.req, irn, i);
+ o.carrier = op;
+ o.irn = irn;
+ o.pos = i;
+ o.partner = NULL;
+ o.has_constraints = arch_register_req_is(&o.req, limited);
+ obstack_grow(obst, &o, sizeof(o));
+ insn->n_ops++;
+ insn->in_constraints |= o.has_constraints;
+ }
+ }
+
+ insn->has_constraints = insn->in_constraints | insn->out_constraints;
+ insn->ops = obstack_finish(obst);
+
+ /* Compute the admissible registers bitsets. */
+ for(i = 0; i < insn->n_ops; ++i) {
+ be_operand_t *op = &insn->ops[i];
+
+ assert(op->req.cls == env->cls);
+ op->regs = bitset_obstack_alloc(obst, env->cls->n_regs);
+
+ if(arch_register_req_is(&op->req, limited))
+ op->req.limited(op->req.limited_env, op->regs);
+ else {
+ arch_put_non_ignore_regs(arch_env, env->cls, op->regs);
+ bitset_andnot(op->regs, env->ignore_colors);
+ }
+
+ }
+
+ return insn;
+}
--- /dev/null
+/**
+ * Instructions
+ *
+ * A data structure to treat nodes and node-proj collections uniformly.
+ */
+
+#ifndef _BEINSN_T_H
+#define _BEINSN_T_H
+
+#include "bitset.h"
+
+#include "bearch.h"
+
+typedef struct _be_operand_t be_operand_t;
+typedef struct _be_insn_t be_insn_t;
+typedef struct _be_insn_env_t be_insn_env_t;
+
+struct _be_operand_t {
+ ir_node *irn;
+ ir_node *carrier;
+ be_operand_t *partner;
+ bitset_t *regs;
+ int pos;
+ arch_register_req_t req;
+ unsigned has_constraints : 1;
+};
+
+struct _be_insn_t {
+ be_operand_t *ops;
+ int n_ops;
+ int use_start;
+ ir_node *next_insn;
+ ir_node *irn;
+ unsigned in_constraints : 1;
+ unsigned out_constraints : 1;
+ unsigned has_constraints : 1;
+ unsigned pre_colored : 1;
+};
+
+struct _be_insn_env_t {
+ struct obstack *obst;
+ const arch_env_t *aenv;
+ const arch_register_class_t *cls;
+ bitset_t *ignore_colors;
+};
+
+#define be_insn_n_defs(insn) ((insn)->use_start)
+#define be_insn_n_uses(insn) ((insn)->n_ops - (insn)->use_start)
+
+be_insn_t *be_scan_insn(const be_insn_env_t *env, ir_node *irn);
+
+#endif /* _BEINSN_T_H */