/* * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * * This file may be distributed and/or modified under the terms of the * GNU General Public License version 2 as published by the Free Software * Foundation and appearing in the file LICENSE.GPL included in the * packaging of this file. * * Licensees holding valid libFirm Professional Edition licenses may use * this file in accordance with the libFirm Commercial License. * Agreement provided with the Software. * * This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE * WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE. */ /** * @file * @brief Processor architecture specification. * @author Sebastian Hack * @version $Id$ */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include "bearch_t.h" #include "benode_t.h" #include "ircons_t.h" #include "irnode_t.h" #include "xmalloc.h" #include "bitset.h" #include "pset.h" #include "raw_bitset.h" #include "irprintf.h" /* Initialize the architecture environment struct. */ arch_env_t *arch_env_init(const arch_isa_if_t *isa_if, FILE *file_handle, be_main_env_t *main_env) { arch_env_t *arch_env = isa_if->init(file_handle); arch_env->main_env = main_env; return arch_env; } int arch_register_class_put(const arch_register_class_t *cls, bitset_t *bs) { if(bs) { int i, n; for(i = 0, n = cls->n_regs; i < n; ++i) bitset_set(bs, i); } return cls->n_regs; } /** * Get the isa responsible for a node. * @param env The arch environment with the isa stack. * @param irn The node to get the responsible isa for. * @return The irn operations given by the responsible isa. */ static INLINE const arch_irn_ops_t * get_irn_ops(const arch_env_t *env, const ir_node *irn) { const ir_op *ops; const arch_irn_ops_t *be_ops; (void) env; if (is_Proj(irn)) { irn = get_Proj_pred(irn); assert(!is_Proj(irn)); } ops = get_irn_op(irn); be_ops = get_op_ops(ops)->be_ops; assert(be_ops); return be_ops; } const arch_irn_ops_t *arch_get_irn_ops(const arch_env_t *env, const ir_node *irn) { return get_irn_ops(env, irn); } const arch_register_req_t *arch_get_register_req(const arch_env_t *env, const ir_node *irn, int pos) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->get_irn_reg_req(irn, pos); } void arch_set_frame_offset(const arch_env_t *env, ir_node *irn, int offset) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); ops->set_frame_offset(irn, offset); } ir_entity *arch_get_frame_entity(const arch_env_t *env, const ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->get_frame_entity(irn); } void arch_set_frame_entity(const arch_env_t *env, ir_node *irn, ir_entity *ent) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); ops->set_frame_entity(irn, ent); } int arch_get_sp_bias(const arch_env_t *env, ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->get_sp_bias(irn); } arch_inverse_t *arch_get_inverse(const arch_env_t *env, const ir_node *irn, int i, arch_inverse_t *inverse, struct obstack *obstack) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); if(ops->get_inverse) { return ops->get_inverse(irn, i, inverse, obstack); } else { return NULL; } } int arch_possible_memory_operand(const arch_env_t *env, const ir_node *irn, unsigned int i) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); if(ops->possible_memory_operand) { return ops->possible_memory_operand(irn, i); } else { return 0; } } void arch_perform_memory_operand(const arch_env_t *env, ir_node *irn, ir_node *spill, unsigned int i) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); if(ops->perform_memory_operand) { ops->perform_memory_operand(irn, spill, i); } else { return; } } int arch_get_op_estimated_cost(const arch_env_t *env, const ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); if(ops->get_op_estimated_cost) { return ops->get_op_estimated_cost(irn); } else { return 1; } } int arch_is_possible_memory_operand(const arch_env_t *env, const ir_node *irn, int i) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); if(ops->possible_memory_operand) { return ops->possible_memory_operand(irn, i); } else { return 0; } } int arch_get_allocatable_regs(const arch_env_t *env, const ir_node *irn, int pos, bitset_t *bs) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos); if(req->type == arch_register_req_type_none) { bitset_clear_all(bs); return 0; } if(arch_register_req_is(req, limited)) { rbitset_copy_to_bitset(req->limited, bs); return bitset_popcnt(bs); } arch_register_class_put(req->cls, bs); return req->cls->n_regs; } void arch_put_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls, bitset_t *bs) { unsigned i; (void) env; for(i = 0; i < cls->n_regs; ++i) { if(!arch_register_type_is(&cls->regs[i], ignore)) bitset_set(bs, i); } } int arch_count_non_ignore_regs(const arch_env_t *env, const arch_register_class_t *cls) { unsigned i; int result = 0; (void) env; for(i = 0; i < cls->n_regs; ++i) { if(!arch_register_type_is(&cls->regs[i], ignore)) result++; } return result; } int arch_is_register_operand(const arch_env_t *env, const ir_node *irn, int pos) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos); return req != NULL; } int arch_reg_is_allocatable(const arch_env_t *env, const ir_node *irn, int pos, const arch_register_t *reg) { const arch_register_req_t *req; req = arch_get_register_req(env, irn, pos); if(req->type == arch_register_req_type_none) return 0; if(arch_register_req_is(req, limited)) { assert(arch_register_get_class(reg) == req->cls); return rbitset_is_set(req->limited, arch_register_get_index(reg)); } return req->cls == reg->reg_class; } const arch_register_class_t * arch_get_irn_reg_class(const arch_env_t *env, const ir_node *irn, int pos) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); const arch_register_req_t *req = ops->get_irn_reg_req(irn, pos); assert(req->type != arch_register_req_type_none || req->cls == NULL); return req->cls; } extern const arch_register_t * arch_get_irn_register(const arch_env_t *env, const ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->get_irn_reg(irn); } extern void arch_set_irn_register(const arch_env_t *env, ir_node *irn, const arch_register_t *reg) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); ops->set_irn_reg(irn, reg); } extern arch_irn_class_t arch_irn_classify(const arch_env_t *env, const ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->classify(irn); } extern arch_irn_flags_t arch_irn_get_flags(const arch_env_t *env, const ir_node *irn) { const arch_irn_ops_t *ops = get_irn_ops(env, irn); return ops->get_flags(irn); } extern const char *arch_irn_flag_str(arch_irn_flags_t fl) { switch(fl) { #define XXX(x) case arch_irn_flags_ ## x: return #x; XXX(dont_spill); XXX(ignore); XXX(rematerializable); XXX(modify_sp); XXX(modify_flags); XXX(none); #undef XXX } return "n/a"; } extern char *arch_register_req_format(char *buf, size_t len, const arch_register_req_t *req, const ir_node *node) { char tmp[128]; snprintf(buf, len, "class: %s", req->cls->name); if(arch_register_req_is(req, limited)) { unsigned n_regs = req->cls->n_regs; unsigned i; strncat(buf, " limited:", len); for(i = 0; i < n_regs; ++i) { if(rbitset_is_set(req->limited, i)) { const arch_register_t *reg = &req->cls->regs[i]; strncat(buf, " ", len); strncat(buf, reg->name, len); } } } if(arch_register_req_is(req, should_be_same)) { const unsigned other = req->other_same; int i; ir_snprintf(tmp, sizeof(tmp), " same to:"); for (i = 0; 1U << i <= other; ++i) { if (other & (1U << i)) { ir_snprintf(tmp, sizeof(tmp), " %+F", get_irn_n(skip_Proj_const(node), i)); strncat(buf, tmp, len); } } } if(arch_register_req_is(req, should_be_different)) { const unsigned other = req->other_different; int i; ir_snprintf(tmp, sizeof(tmp), " different from:"); for (i = 0; 1U << i <= other; ++i) { if (other & (1U << i)) { ir_snprintf(tmp, sizeof(tmp), " %+F", get_irn_n(skip_Proj_const(node), i)); strncat(buf, tmp, len); } } } return buf; } static const arch_register_req_t no_requirement = { arch_register_req_type_none, NULL, NULL, 0, 0 }; const arch_register_req_t *arch_no_register_req = &no_requirement;