X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeinsn.c;h=947b8821e85fcb70f156219d83db056dce48658a;hb=63e8a062a48c91aa36429576c648624f88dcfe35;hp=5efcb69a2746173a961860781dfb6e4fb616ffe8;hpb=0fbcef83aa6060534172bb13e71cdadb04428806;p=libfirm diff --git a/ir/be/beinsn.c b/ir/be/beinsn.c index 5efcb69a2..947b8821e 100644 --- a/ir/be/beinsn.c +++ b/ir/be/beinsn.c @@ -21,7 +21,6 @@ * @file * @brief A data structure to treat nodes and node-proj collections uniformly. * @author Sebastian Hack - * @version $Id$ */ #include "config.h" @@ -30,68 +29,24 @@ #include "irnode_t.h" #include "iredges.h" -#include "besched_t.h" +#include "bechordal_t.h" +#include "besched.h" #include "beinsn_t.h" -#include "beirg_t.h" #include "beabi.h" #include "raw_bitset.h" -/** - * Add machine operands to the instruction uses. - * - * @param env the insn construction environment - * @param insn the be_insn that is build - * @param mach_op the machine operand for which uses are added - */ -static void add_machine_operands(const be_insn_env_t *env, be_insn_t *insn, ir_node *mach_op) { - struct obstack *obst = env->obst; - int i, n; - - for (i = 0, n = get_irn_arity(mach_op); i < n; ++i) { - ir_node *op = get_irn_n(mach_op, i); - - if (is_irn_machine_operand(op)) { - add_machine_operands(env, insn, op); - } else if (arch_irn_consider_in_reg_alloc(env->cls, op)) { - be_operand_t o; - - /* found a register use, create an operand */ - o.req = arch_get_register_req(mach_op, i); - o.carrier = op; - o.irn = insn->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; - } - } -} - -/** - * Create a be_insn_t for an IR node. - * - * @param env the insn construction environment - * @param irn the irn for which the be_insn should be build - * - * @return the be_insn for the IR node - */ -be_insn_t *be_scan_insn(const be_insn_env_t *env, ir_node *irn) +be_insn_t *be_scan_insn(be_chordal_env_t *const env, ir_node *const irn) { - struct obstack *obst = env->obst; + struct obstack *const 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])); + be_insn_t *insn = OALLOCZ(obst, be_insn_t); + + bool has_constraints = false; - insn->irn = irn; - insn->next_insn = sched_next(irn); + insn->irn = irn; if (get_irn_mode(irn) == mode_T) { - const ir_edge_t *edge; ir_node *p; /* This instruction might create more than one def. These are handled @@ -105,98 +60,61 @@ be_insn_t *be_scan_insn(const be_insn_env_t *env, ir_node *irn) if (arch_irn_consider_in_reg_alloc(env->cls, p)) { /* found a def: create a new operand */ - o.req = arch_get_register_req(p, -1); + arch_register_req_t const *const req = arch_get_irn_register_req(p); + if (arch_register_req_is(req, limited)) { + o.regs = req->limited; + has_constraints = true; + } else { + o.regs = env->allocatable_regs->data; + has_constraints |= req->width > 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(p) != NULL; } } } else if (arch_irn_consider_in_reg_alloc(env->cls, irn)) { /* only one def, create one operand */ - o.req = arch_get_register_req(irn, -1); + arch_register_req_t const *const req = arch_get_irn_register_req(irn); + if (arch_register_req_is(req, limited)) { + o.regs = req->limited; + has_constraints = true; + } else { + o.regs = env->allocatable_regs->data; + has_constraints |= req->width > 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(irn) != NULL; } - if (pre_colored > 0) { - assert(pre_colored == insn->n_ops && "partly pre-colored nodes not supported"); - insn->pre_colored = 1; - } - insn->use_start = insn->n_ops; + insn->use_start = insn->n_ops; /* now collect the uses for this node */ for (i = 0, n = get_irn_arity(irn); i < n; ++i) { ir_node *op = get_irn_n(irn, i); - if (is_irn_machine_operand(op)) { - add_machine_operands(env, insn, op); - } else if (arch_irn_consider_in_reg_alloc(env->cls, op)) { + if (arch_irn_consider_in_reg_alloc(env->cls, op)) { /* found a register use, create an operand */ - o.req = arch_get_register_req(irn, i); + arch_register_req_t const *const req = arch_get_irn_register_req_in(irn, i); + if (arch_register_req_is(req, limited)) { + o.regs = req->limited; + has_constraints = true; + } else { + o.regs = env->allocatable_regs->data; + } 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]; - const arch_register_req_t *req = op->req; - const arch_register_class_t *cls = req->cls; - arch_register_req_type_t type = req->type; - - /* If there is no special requirement, we allow current class here */ - if (cls == NULL && req->type == arch_register_req_type_none) { - cls = env->cls; - type = arch_register_req_type_normal; - } - - assert(cls == env->cls); - - op->regs = bitset_obstack_alloc(obst, env->cls->n_regs); - - if (type & arch_register_req_type_limited) { - rbitset_copy_to_bitset(req->limited, op->regs); - } else { - arch_put_non_ignore_regs(env->cls, op->regs); - if (env->ignore_colors) - bitset_andnot(op->regs, env->ignore_colors); - } - } + if (!has_constraints) + return NULL; + insn->ops = (be_operand_t*)obstack_finish(obst); return insn; } - -be_insn_env_t *be_insn_env_init(be_insn_env_t *ie, const be_irg_t *birg, - const arch_register_class_t *cls, - struct obstack *obst) -{ - ie->cls = cls; - ie->obst = obst; - ie->ignore_colors = bitset_obstack_alloc(obst, cls->n_regs); - be_abi_put_ignore_regs(birg->abi, cls, ie->ignore_colors); - - return ie; -}