X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Farm%2Fbearch_arm.c;h=0047ab1e2e03261814a4faa15d2933e573726042;hb=1cfc3b8913222d4e543ba38b6cb23ae55cf37a76;hp=b87a8bbd07e86b4b6c5c145a15999f7ad3e53491;hpb=48ac0577bda9e3ddc1ade435137b12e81a929bb6;p=libfirm diff --git a/ir/be/arm/bearch_arm.c b/ir/be/arm/bearch_arm.c index b87a8bbd0..0047ab1e2 100644 --- a/ir/be/arm/bearch_arm.c +++ b/ir/be/arm/bearch_arm.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2007 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -27,8 +27,8 @@ #include "config.h" #endif -#include -#include +#include "lc_opts.h" +#include "lc_opts_enum.h" #include "pseudo_irg.h" #include "irgwalk.h" @@ -37,7 +37,9 @@ #include "ircons.h" #include "irgmod.h" #include "irgopt.h" +#include "iroptimize.h" #include "lowering.h" +#include "error.h" #include "bitset.h" #include "debug.h" @@ -61,6 +63,7 @@ #include "arm_new_nodes.h" /* arm nodes interface */ #include "gen_arm_regalloc_if.h" /* the generated interface (register type and class defenitions) */ #include "arm_transform.h" +#include "arm_optimize.h" #include "arm_emitter.h" #include "arm_map_regs.h" @@ -85,13 +88,11 @@ static set *cur_reg_set = NULL; * If the node returns a tuple (mode_T) then the proj's * will be asked for this information. */ -static const -arch_register_req_t *arm_get_irn_reg_req(const void *self, const ir_node *node, - int pos) +static const arch_register_req_t *arm_get_irn_reg_req(const ir_node *node, + int pos) { long node_pos = pos == -1 ? 0 : pos; ir_mode *mode = get_irn_mode(node); - (void) self; if (is_Block(node) || mode == mode_X) { return arch_no_register_req; @@ -130,11 +131,9 @@ arch_register_req_t *arm_get_irn_reg_req(const void *self, const ir_node *node, return arch_no_register_req; } -static void arm_set_irn_reg(const void *self, ir_node *irn, - const arch_register_t *reg) +static void arm_set_irn_reg(ir_node *irn, const arch_register_t *reg) { int pos = 0; - (void) self; if (get_irn_mode(irn) == mode_X) { return; @@ -157,12 +156,10 @@ static void arm_set_irn_reg(const void *self, ir_node *irn, } } -static const arch_register_t *arm_get_irn_reg(const void *self, - const ir_node *irn) +static const arch_register_t *arm_get_irn_reg(const ir_node *irn) { int pos = 0; const arch_register_t *reg = NULL; - (void) self; if (is_Proj(irn)) { @@ -186,9 +183,8 @@ static const arch_register_t *arm_get_irn_reg(const void *self, return reg; } -static arch_irn_class_t arm_classify(const void *self, const ir_node *irn) +static arch_irn_class_t arm_classify(const ir_node *irn) { - (void) self; irn = skip_Proj_const(irn); if (is_cfop(irn)) { @@ -201,59 +197,62 @@ static arch_irn_class_t arm_classify(const void *self, const ir_node *irn) return 0; } -static arch_irn_flags_t arm_get_flags(const void *self, const ir_node *irn) +static arch_irn_flags_t arm_get_flags(const ir_node *irn) { - (void) self; - irn = skip_Proj_const(irn); + arch_irn_flags_t flags = arch_irn_flags_none; - if (is_arm_irn(irn)) { - return get_arm_flags(irn); - } - else if (is_Unknown(irn)) { + if(is_Unknown(irn)) { return arch_irn_flags_ignore; } - return 0; + if (is_Proj(irn) && mode_is_datab(get_irn_mode(irn))) { + ir_node *pred = get_Proj_pred(irn); + if (is_arm_irn(pred)) { + flags = get_arm_out_flags(pred, get_Proj_proj(irn)); + } + irn = pred; + } + + if (is_arm_irn(irn)) { + flags |= get_arm_flags(irn); + } + + return flags; } -static ir_entity *arm_get_frame_entity(const void *self, const ir_node *irn) -{ - (void) self; +static ir_entity *arm_get_frame_entity(const ir_node *irn) { + /* we do NOT transform be_Spill or be_Reload nodes, so we never + have frame access using ARM nodes. */ (void) irn; - /* TODO: return the entity assigned to the frame */ return NULL; } -static void arm_set_frame_entity(const void *self, ir_node *irn, ir_entity *ent) -{ - (void) self; +static void arm_set_frame_entity(ir_node *irn, ir_entity *ent) { (void) irn; (void) ent; - /* TODO: set the entity assigned to the frame */ + panic("arm_set_frame_entity() called. This should not happen."); } /** * This function is called by the generic backend to correct offsets for * nodes accessing the stack. */ -static void arm_set_stack_bias(const void *self, ir_node *irn, int bias) +static void arm_set_stack_bias(ir_node *irn, int bias) { - (void) self; (void) irn; (void) bias; /* TODO: correct offset if irn accesses the stack */ } -static int arm_get_sp_bias(const void *self, const ir_node *irn) +static int arm_get_sp_bias(const ir_node *irn) { - (void) self; (void) irn; return 0; } /* fill register allocator interface */ -static const arch_irn_ops_if_t arm_irn_ops_if = { +static const arch_irn_ops_t arm_irn_ops = { arm_get_irn_reg_req, arm_set_irn_reg, arm_get_irn_reg, @@ -269,13 +268,6 @@ static const arch_irn_ops_if_t arm_irn_ops_if = { NULL, /* perform_memory_operand */ }; -arm_irn_ops_t arm_irn_ops = { - &arm_irn_ops_if, - NULL -}; - - - /************************************************** * _ _ __ * | | (_)/ _| @@ -315,10 +307,10 @@ static void arm_prepare_graph(void *self) { */ static void arm_finish_irg(void *self) { - (void) self; - /* TODO: - fix offsets for nodes accessing stack - - ... - */ + arm_code_gen_t *cg = self; + + /* do peephole optimizations and fix stack offsets */ + arm_peephole_optimization(cg); } @@ -567,6 +559,7 @@ static void *arm_cg_init(be_irg_t *birg); static const arch_code_generator_if_t arm_code_gen_if = { arm_cg_init, + NULL, /* get_pic_base */ arm_before_abi, /* before abi introduce */ arm_prepare_graph, NULL, /* spill */ @@ -582,7 +575,7 @@ static const arch_code_generator_if_t arm_code_gen_if = { */ static void *arm_cg_init(be_irg_t *birg) { static ir_type *int_tp = NULL; - arm_isa_t *isa = (arm_isa_t *)birg->main_env->arch_env->isa; + arm_isa_t *isa = (arm_isa_t *)birg->main_env->arch_env; arm_code_gen_t *cg; if (! int_tp) { @@ -607,8 +600,6 @@ static void *arm_cg_init(be_irg_t *birg) { cur_reg_set = cg->reg_set; - arm_irn_ops.cg = cg; - /* enter the current code generator */ isa->cg = cg; @@ -758,6 +749,7 @@ static arm_isa_t arm_isa_template = { &arm_gp_regs[REG_SP], /* stack pointer */ &arm_gp_regs[REG_R11], /* base pointer */ -1, /* stack direction */ + 2, /* power of two stack alignment for calls, 2^2 == 4 */ NULL, /* main environment */ 7, /* spill costs */ 5, /* reload costs */ @@ -765,17 +757,16 @@ static arm_isa_t arm_isa_template = { 0, /* use generic register names instead of SP, LR, PC */ ARM_FPU_ARCH_FPE, /* FPU architecture */ NULL, /* current code generator */ - NULL_EMITTER, /* emitter environment */ }; /** * Initializes the backend ISA and opens the output file. */ -static void *arm_init(FILE *file_handle) { +static arch_env_t *arm_init(FILE *file_handle) { static int inited = 0; arm_isa_t *isa; - if(inited) + if (inited) return NULL; isa = xmalloc(sizeof(*isa)); @@ -784,11 +775,16 @@ static void *arm_init(FILE *file_handle) { arm_register_init(); isa->cg = NULL; - be_emit_init_env(&isa->emit, file_handle); + be_emit_init(file_handle); - arm_create_opcodes(); + arm_create_opcodes(&arm_irn_ops); arm_handle_intrinsics(); + /* needed for the debug support */ + be_gas_emit_switch_section(GAS_SECTION_TEXT); + be_emit_cstring(".Ltext0:\n"); + be_emit_write_line(); + /* we mark referenced global entities, so we can only emit those which * are actually referenced. (Note: you mustn't use the type visited flag * elsewhere in the backend) @@ -796,7 +792,7 @@ static void *arm_init(FILE *file_handle) { inc_master_type_visited(); inited = 1; - return isa; + return &isa->arch_env; } @@ -807,9 +803,9 @@ static void *arm_init(FILE *file_handle) { static void arm_done(void *self) { arm_isa_t *isa = self; - be_gas_emit_decls(&isa->emit, isa->arch_isa.main_env, 1); + be_gas_emit_decls(isa->arch_env.main_env, 1); - be_emit_destroy_env(&isa->emit); + be_emit_exit(); free(self); } @@ -820,19 +816,18 @@ static void arm_done(void *self) { * here to speed up register allocation (and makes dumps * smaller and more readable). */ -static int arm_get_n_reg_class(const void *self) { - const arm_isa_t *isa = self; - - /* ARGH! is called BEFORE transform */ +static unsigned arm_get_n_reg_class(const void *self) { + (void) self; return N_CLASSES; - return isa->cg->have_fp_insn ? 2 : 1; } /** * Return the register class with requested index. */ -static const arch_register_class_t *arm_get_reg_class(const void *self, int i) { +static const arch_register_class_t *arm_get_reg_class(const void *self, + unsigned i) { (void) self; + assert(i < N_CLASSES); return &arm_reg_classes[i]; } @@ -881,7 +876,6 @@ static ir_type *arm_get_between_type(void *self) { typedef struct { be_abi_call_flags_bits_t flags; const arch_env_t *arch_env; - const arch_isa_t *isa; ir_graph *irg; } arm_abi_env_t; @@ -892,37 +886,56 @@ static void *arm_abi_init(const be_abi_call_t *call, const arch_env_t *arch_env, env->flags = fl.bits; env->irg = irg; env->arch_env = arch_env; - env->isa = arch_env->isa; return env; } +/** + * Put all registers which are saved by the prologue/epilogue in a set. + * + * @param self The callback object. + * @param s The result set. + */ static void arm_abi_dont_save_regs(void *self, pset *s) { arm_abi_env_t *env = self; if (env->flags.try_omit_fp) - pset_insert_ptr(s, env->isa->bp); + pset_insert_ptr(s, env->arch_env->bp); } /** - * Build the ARM prolog +* Generate the routine prologue. + * + * @param self The callback object. + * @param mem A pointer to the mem node. Update this if you define new memory. + * @param reg_map A map mapping all callee_save/ignore/parameter registers to their defining nodes. + * + * @return The register which shall be used as a stack frame base. + * + * All nodes which define registers in @p reg_map must keep @p reg_map current. */ static const arch_register_t *arm_abi_prologue(void *self, ir_node **mem, pmap *reg_map) { - ir_node *keep, *store; - arm_abi_env_t *env = self; - ir_graph *irg = env->irg; - ir_node *block = get_irg_start_block(irg); - arch_register_class_t *gp = &arm_reg_classes[CLASS_arm_gp]; + arm_abi_env_t *env = self; + ir_node *keep, *store; + ir_graph *irg; + ir_node *block; + arch_register_class_t *gp; - ir_node *fp = be_abi_reg_map_get(reg_map, env->isa->bp); - ir_node *ip = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R12]); - ir_node *sp = be_abi_reg_map_get(reg_map, env->isa->sp); - ir_node *lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]); - ir_node *pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]); + ir_node *fp, *ip, *lr, *pc; + ir_node *sp = be_abi_reg_map_get(reg_map, env->arch_env->sp); if (env->flags.try_omit_fp) - return env->isa->sp; + return env->arch_env->sp; + + fp = be_abi_reg_map_get(reg_map, env->arch_env->bp); + ip = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_R12]); + lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]); + pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]); + + gp = &arm_reg_classes[CLASS_arm_gp]; + irg = env->irg; + block = get_irg_start_block(irg); ip = be_new_Copy(gp, irg, block, sp); arch_set_irn_register(env->arch_env, ip, &arm_gp_regs[REG_R12]); @@ -930,8 +943,8 @@ static const arch_register_t *arm_abi_prologue(void *self, ir_node **mem, pmap * store = new_rd_arm_StoreStackM4Inc(NULL, irg, block, sp, fp, ip, lr, pc, *mem); - sp = new_r_Proj(irg, block, store, env->isa->sp->reg_class->mode, pn_arm_StoreStackM4Inc_ptr); - arch_set_irn_register(env->arch_env, sp, env->isa->sp); + sp = new_r_Proj(irg, block, store, env->arch_env->sp->reg_class->mode, pn_arm_StoreStackM4Inc_ptr); + arch_set_irn_register(env->arch_env, sp, env->arch_env->sp); *mem = new_r_Proj(irg, block, store, mode_M, pn_arm_StoreStackM4Inc_M); keep = be_new_CopyKeep_single(gp, irg, block, ip, sp, get_irn_mode(ip)); @@ -939,17 +952,19 @@ static const arch_register_t *arm_abi_prologue(void *self, ir_node **mem, pmap * arch_set_irn_register(env->arch_env, keep, &arm_gp_regs[REG_R12]); be_set_constr_single_reg(keep, BE_OUT_POS(0), &arm_gp_regs[REG_R12] ); - fp = new_rd_arm_Sub_i(NULL, irg, block, keep, get_irn_mode(fp), - new_tarval_from_long(4, get_irn_mode(fp))); - arch_set_irn_register(env->arch_env, fp, env->isa->bp); + fp = new_rd_arm_Sub_i(NULL, irg, block, keep, get_irn_mode(fp), 4); + arch_set_irn_register(env->arch_env, fp, env->arch_env->bp); + fp = be_new_Copy(gp, irg, block, fp); // XXX Gammelfix: only be_ nodes can have the ignore flag set + arch_set_irn_register(env->arch_env, fp, env->arch_env->bp); + be_node_set_flags(fp, BE_OUT_POS(0), arch_irn_flags_ignore); - be_abi_reg_map_set(reg_map, env->isa->bp, fp); + be_abi_reg_map_set(reg_map, env->arch_env->bp, fp); be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_R12], keep); - be_abi_reg_map_set(reg_map, env->isa->sp, sp); + be_abi_reg_map_set(reg_map, env->arch_env->sp, sp); be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_LR], lr); be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_PC], pc); - return env->isa->bp; + return env->arch_env->bp; } /** @@ -957,14 +972,14 @@ static const arch_register_t *arm_abi_prologue(void *self, ir_node **mem, pmap * */ static void arm_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_map) { arm_abi_env_t *env = self; - ir_node *curr_sp = be_abi_reg_map_get(reg_map, env->isa->sp); - ir_node *curr_bp = be_abi_reg_map_get(reg_map, env->isa->bp); + ir_node *curr_sp = be_abi_reg_map_get(reg_map, env->arch_env->sp); + ir_node *curr_bp = be_abi_reg_map_get(reg_map, env->arch_env->bp); ir_node *curr_pc = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_PC]); ir_node *curr_lr = be_abi_reg_map_get(reg_map, &arm_gp_regs[REG_LR]); // TODO: Activate Omit fp in epilogue if (env->flags.try_omit_fp) { - curr_sp = be_new_IncSP(env->isa->sp, env->irg, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK); + curr_sp = be_new_IncSP(env->arch_env->sp, env->irg, bl, curr_sp, BE_STACK_FRAME_SIZE_SHRINK, 0); add_irn_dep(curr_sp, *mem); curr_lr = be_new_CopyKeep_single(&arm_reg_classes[CLASS_arm_gp], env->irg, bl, curr_lr, curr_sp, get_irn_mode(curr_lr)); @@ -979,26 +994,25 @@ static void arm_abi_epilogue(void *self, ir_node *bl, ir_node **mem, pmap *reg_m } else { ir_node *sub12_node; ir_node *load_node; - tarval *tv = new_tarval_from_long(12,mode_Iu); - sub12_node = new_rd_arm_Sub_i(NULL, env->irg, bl, curr_bp, mode_Iu, tv); + sub12_node = new_rd_arm_Sub_i(NULL, env->irg, bl, curr_bp, mode_Iu, 12); // FIXME //set_arm_req_out_all(sub12_node, sub12_req); - arch_set_irn_register(env->arch_env, sub12_node, env->isa->sp); + arch_set_irn_register(env->arch_env, sub12_node, env->arch_env->sp); load_node = new_rd_arm_LoadStackM3( NULL, env->irg, bl, sub12_node, *mem ); // FIXME //set_arm_req_out(load_node, &arm_default_req_arm_gp_r11, 0); //set_arm_req_out(load_node, &arm_default_req_arm_gp_sp, 1); //set_arm_req_out(load_node, &arm_default_req_arm_gp_pc, 2); - curr_bp = new_r_Proj(env->irg, bl, load_node, env->isa->bp->reg_class->mode, pn_arm_LoadStackM3_res0); - curr_sp = new_r_Proj(env->irg, bl, load_node, env->isa->sp->reg_class->mode, pn_arm_LoadStackM3_res1); + curr_bp = new_r_Proj(env->irg, bl, load_node, env->arch_env->bp->reg_class->mode, pn_arm_LoadStackM3_res0); + curr_sp = new_r_Proj(env->irg, bl, load_node, env->arch_env->sp->reg_class->mode, pn_arm_LoadStackM3_res1); curr_pc = new_r_Proj(env->irg, bl, load_node, mode_Iu, pn_arm_LoadStackM3_res2); *mem = new_r_Proj(env->irg, bl, load_node, mode_M, pn_arm_LoadStackM3_M); - arch_set_irn_register(env->arch_env, curr_bp, env->isa->bp); - arch_set_irn_register(env->arch_env, curr_sp, env->isa->sp); + arch_set_irn_register(env->arch_env, curr_bp, env->arch_env->bp); + arch_set_irn_register(env->arch_env, curr_sp, env->arch_env->sp); arch_set_irn_register(env->arch_env, curr_pc, &arm_gp_regs[REG_PC]); } - be_abi_reg_map_set(reg_map, env->isa->sp, curr_sp); - be_abi_reg_map_set(reg_map, env->isa->bp, curr_bp); + be_abi_reg_map_set(reg_map, env->arch_env->sp, curr_sp); + be_abi_reg_map_set(reg_map, env->arch_env->bp, curr_bp); be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_LR], curr_lr); be_abi_reg_map_set(reg_map, &arm_gp_regs[REG_PC], curr_pc); } @@ -1024,30 +1038,29 @@ void arm_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi ir_mode *mode; int i; int n = get_method_n_params(method_type); - be_abi_call_flags_t flags = { - { - 0, /* store from left to right */ - 0, /* store arguments sequential */ - 1, /* try to omit the frame pointer */ - 1, /* the function can use any register as frame pointer */ - 1, /* a call can take the callee's address as an immediate */ - 0, /* IRG is a leaf function */ - 0 /* Set to one, if there is already enough room on the stack for call args. */ - } - }; + be_abi_call_flags_t call_flags = be_abi_call_get_flags(abi); (void) self; + /* set abi flags for calls */ + call_flags.bits.left_to_right = 0; + call_flags.bits.store_args_sequential = 0; + /* call_flags.bits.try_omit_fp don't change this we can handle both */ + call_flags.bits.fp_free = 0; + call_flags.bits.call_has_imm = 1; /* IA32 calls can have immediate address */ + /* set stack parameter passing style */ - be_abi_call_set_flags(abi, flags, &arm_abi_callbacks); + be_abi_call_set_flags(abi, call_flags, &arm_abi_callbacks); for (i = 0; i < n; i++) { /* reg = get reg for param i; */ /* be_abi_call_param_reg(abi, i, reg); */ - if (i < 4) - + if (i < 4) { be_abi_call_param_reg(abi, i, arm_get_RegParam_reg(i)); - else - be_abi_call_param_stack(abi, i, 4, 0, 0); + } else { + tp = get_method_param_type(method_type, i); + mode = get_type_mode(tp); + be_abi_call_param_stack(abi, i, mode, 4, 0, 0); + } } /* set return registers */ @@ -1081,21 +1094,6 @@ void arm_get_call_abi(const void *self, ir_type *method_type, be_abi_call_t *abi } } -static const void *arm_get_irn_ops(const arch_irn_handler_t *self, const ir_node *irn) { - (void) self; - (void) irn; - return &arm_irn_ops; -} - -const arch_irn_handler_t arm_irn_handler = { - arm_get_irn_ops -}; - -const arch_irn_handler_t *arm_get_irn_handler(const void *self) { - (void) self; - return &arm_irn_handler; -} - int arm_to_appear_in_schedule(void *block_env, const ir_node *irn) { (void) block_env; if(!is_arm_irn(irn)) @@ -1119,10 +1117,11 @@ list_sched_selector_t arm_sched_selector; */ static const list_sched_selector_t *arm_get_list_sched_selector(const void *self, list_sched_selector_t *selector) { (void) self; - (void) selector; - arm_sched_selector = reg_pressure_selector; + memcpy(&arm_sched_selector, selector, sizeof(arm_sched_selector)); + /* arm_sched_selector.exectime = arm_sched_exectime; */ arm_sched_selector.to_appear_in_schedule = arm_to_appear_in_schedule; return &arm_sched_selector; + } static const ilp_sched_selector_t *arm_get_ilp_sched_selector(const void *self) { @@ -1225,11 +1224,13 @@ static const backend_params *arm_get_libfirm_params(void) { static backend_params p = { 1, /* need dword lowering */ 0, /* don't support inline assembler yet */ + 0, /* no immediate floating point mode. */ NULL, /* no additional opcodes */ NULL, /* will be set later */ NULL, /* but yet no creator function */ NULL, /* context for create_intrinsic_fkt */ NULL, /* will be set below */ + NULL /* no immediate fp mode */ }; p.dep_param = &ad; @@ -1265,7 +1266,6 @@ const arch_isa_if_t arm_isa_if = { arm_get_reg_class, arm_get_reg_class_for_mode, arm_get_call_abi, - arm_get_irn_handler, arm_get_code_generator_if, arm_get_list_sched_selector, arm_get_ilp_sched_selector, @@ -1286,6 +1286,7 @@ void be_init_arch_arm(void) be_register_isa_if("arm", &arm_isa_if); arm_init_transform(); + arm_init_emitter(); } BE_REGISTER_MODULE_CONSTRUCTOR(be_init_arch_arm);