X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=ir%2Fbe%2Fbeabi.c;h=be218364deaad0e8f71f0b3e451359ea4a0abe9f;hb=13c55699fa3a9a152b99d2fedce8eb229632d72d;hp=e631e02e34e48f79744c9fa846a4af74fb04db5f;hpb=94e9283b212f0f10b460248de945576a0bb61703;p=libfirm diff --git a/ir/be/beabi.c b/ir/be/beabi.c index e631e02e3..be218364d 100644 --- a/ir/be/beabi.c +++ b/ir/be/beabi.c @@ -1,5 +1,5 @@ /* - * Copyright (C) 1995-2008 University of Karlsruhe. All right reserved. + * Copyright (C) 1995-2011 University of Karlsruhe. All right reserved. * * This file is part of libFirm. * @@ -26,7 +26,6 @@ #include "config.h" #include "obst.h" -#include "offset.h" #include "irgopt.h" @@ -40,7 +39,7 @@ #include "irgopt.h" #include "irbitset.h" #include "iropt_t.h" -#include "height.h" +#include "heights.h" #include "pdeq.h" #include "irtools.h" #include "raw_bitset.h" @@ -56,13 +55,15 @@ #include "beirg.h" #include "bessaconstr.h" #include "bemodule.h" +#include "betranshlp.h" DEBUG_ONLY(static firm_dbg_module_t *dbg;) -typedef struct _be_abi_call_arg_t { +typedef struct be_abi_call_arg_t { unsigned is_res : 1; /**< 1: the call argument is a return value. 0: it's a call parameter. */ unsigned in_reg : 1; /**< 1: this argument is transmitted in registers. */ - unsigned on_stack : 1; /**< 1: this argument is transmitted on the stack. */ + unsigned on_stack : 1; /**< 1: this argument is transmitted on the stack. */ + unsigned callee : 1; /**< 1: someone called us. 0: We call another function */ int pos; const arch_register_t *reg; @@ -73,7 +74,7 @@ typedef struct _be_abi_call_arg_t { unsigned space_after; /**< allocate space after */ } be_abi_call_arg_t; -struct _be_abi_call_t { +struct be_abi_call_t { be_abi_call_flags_t flags; /**< Flags describing the ABI behavior on calls */ int pop; /**< number of bytes the stack frame is shrinked by the callee on return. */ const be_abi_callbacks_t *cb; @@ -83,16 +84,10 @@ struct _be_abi_call_t { }; /** - * The ABI information for the current birg. + * The ABI information for the current graph. */ -struct _be_abi_irg_t { - be_irg_t *birg; /**< The back end IRG. */ - ir_graph *irg; - const arch_env_t *arch_env; - survive_dce_t *dce_survivor; - +struct be_abi_irg_t { be_abi_call_t *call; /**< The ABI call information. */ - ir_type *method_type; /**< The type of the method of the IRG. */ ir_node *init_sp; /**< The node representing the stack pointer at the start of the function. */ @@ -100,28 +95,28 @@ struct _be_abi_irg_t { ir_node *start; /**< The be_Start params node. */ pmap *regs; /**< A map of all callee-save and ignore regs to their Projs to the RegParams node. */ - int start_block_bias; /**< The stack bias at the end of the start block. */ - void *cb; /**< ABI Callback self pointer. */ - pmap *keep_map; /**< mapping blocks to keep nodes. */ - pset *ignore_regs; /**< Additional registers which shall be ignored. */ ir_node **calls; /**< flexible array containing all be_Call nodes */ - - arch_register_req_t *sp_req; - - be_stack_layout_t frame; /**< The stack frame model. */ }; -static heights_t *ir_heights; +static ir_heights_t *ir_heights; /** Flag: if set, try to omit the frame pointer in all routines. */ static int be_omit_fp = 1; -/** Flag: if set, try to omit the frame pointer in leaf routines only. */ -static int be_omit_leaf_fp = 1; +static ir_node *be_abi_reg_map_get(pmap *map, const arch_register_t *reg) +{ + return (ir_node*)pmap_get(map, reg); +} + +static void be_abi_reg_map_set(pmap *map, const arch_register_t* reg, + ir_node *node) +{ + pmap_insert(map, reg, node); +} /* _ ____ ___ ____ _ _ _ _ @@ -139,9 +134,10 @@ static int be_omit_leaf_fp = 1; */ static int cmp_call_arg(const void *a, const void *b, size_t n) { - const be_abi_call_arg_t *p = a, *q = b; + const be_abi_call_arg_t *p = (const be_abi_call_arg_t*)a; + const be_abi_call_arg_t *q = (const be_abi_call_arg_t*)b; (void) n; - return !(p->is_res == q->is_res && p->pos == q->pos); + return !(p->is_res == q->is_res && p->pos == q->pos && p->callee == q->callee); } /** @@ -150,8 +146,9 @@ static int cmp_call_arg(const void *a, const void *b, size_t n) * @param call the abi call * @param is_res true for call results, false for call arguments * @param pos position of the argument + * @param callee context type - if we are callee or caller */ -static be_abi_call_arg_t *get_call_arg(be_abi_call_t *call, int is_res, int pos) +static be_abi_call_arg_t *get_call_arg(be_abi_call_t *call, int is_res, int pos, int callee) { be_abi_call_arg_t arg; unsigned hash; @@ -159,31 +156,27 @@ static be_abi_call_arg_t *get_call_arg(be_abi_call_t *call, int is_res, int pos) memset(&arg, 0, sizeof(arg)); arg.is_res = is_res; arg.pos = pos; + arg.callee = callee; hash = is_res * 128 + pos; - return set_find(call->params, &arg, sizeof(arg), hash); + return (be_abi_call_arg_t*)set_find(call->params, &arg, sizeof(arg), hash); } /** * Set an ABI call object argument. - * - * @param call the abi call - * @param is_res true for call results, false for call arguments - * @param pos position of the argument */ -static be_abi_call_arg_t *create_call_arg(be_abi_call_t *call, int is_res, int pos) +static void remember_call_arg(be_abi_call_arg_t *arg, be_abi_call_t *call, be_abi_context_t context) { - be_abi_call_arg_t arg; - unsigned hash; - - memset(&arg, 0, sizeof(arg)); - arg.is_res = is_res; - arg.pos = pos; - - hash = is_res * 128 + pos; - - return set_insert(call->params, &arg, sizeof(arg), hash); + unsigned hash = arg->is_res * 128 + arg->pos; + if (context & ABI_CONTEXT_CALLEE) { + arg->callee = 1; + set_insert(call->params, arg, sizeof(*arg), hash); + } + if (context & ABI_CONTEXT_CALLER) { + arg->callee = 0; + set_insert(call->params, arg, sizeof(*arg), hash); + } } /* Set the flags for a call. */ @@ -207,29 +200,49 @@ void be_abi_call_set_call_address_reg_class(be_abi_call_t *call, const arch_regi } -void be_abi_call_param_stack(be_abi_call_t *call, int arg_pos, ir_mode *load_mode, unsigned alignment, unsigned space_before, unsigned space_after) +void be_abi_call_param_stack(be_abi_call_t *call, int arg_pos, + ir_mode *load_mode, unsigned alignment, + unsigned space_before, unsigned space_after, + be_abi_context_t context) { - be_abi_call_arg_t *arg = create_call_arg(call, 0, arg_pos); - arg->on_stack = 1; - arg->load_mode = load_mode; - arg->alignment = alignment; - arg->space_before = space_before; - arg->space_after = space_after; + be_abi_call_arg_t arg; + memset(&arg, 0, sizeof(arg)); assert(alignment > 0 && "Alignment must be greater than 0"); + arg.on_stack = 1; + arg.load_mode = load_mode; + arg.alignment = alignment; + arg.space_before = space_before; + arg.space_after = space_after; + arg.is_res = 0; + arg.pos = arg_pos; + + remember_call_arg(&arg, call, context); } -void be_abi_call_param_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg) +void be_abi_call_param_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg, be_abi_context_t context) { - be_abi_call_arg_t *arg = create_call_arg(call, 0, arg_pos); - arg->in_reg = 1; - arg->reg = reg; + be_abi_call_arg_t arg; + memset(&arg, 0, sizeof(arg)); + + arg.in_reg = 1; + arg.reg = reg; + arg.is_res = 0; + arg.pos = arg_pos; + + remember_call_arg(&arg, call, context); } -void be_abi_call_res_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg) +void be_abi_call_res_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg, be_abi_context_t context) { - be_abi_call_arg_t *arg = create_call_arg(call, 1, arg_pos); - arg->in_reg = 1; - arg->reg = reg; + be_abi_call_arg_t arg; + memset(&arg, 0, sizeof(arg)); + + arg.in_reg = 1; + arg.reg = reg; + arg.is_res = 1; + arg.pos = arg_pos; + + remember_call_arg(&arg, call, context); } /* Get the flags of a ABI call object. */ @@ -254,7 +267,7 @@ static be_abi_call_t *be_abi_call_new(const arch_register_class_t *cls_addr) call->cb = NULL; call->cls_addr = cls_addr; - call->flags.bits.try_omit_fp = be_omit_fp | be_omit_leaf_fp; + call->flags.bits.try_omit_fp = be_omit_fp; return call; } @@ -268,79 +281,6 @@ static void be_abi_call_free(be_abi_call_t *call) free(call); } -/* - _____ _ _ _ _ _ - | ___| __ __ _ _ __ ___ ___ | | | | __ _ _ __ __| | (_)_ __ __ _ - | |_ | '__/ _` | '_ ` _ \ / _ \ | |_| |/ _` | '_ \ / _` | | | '_ \ / _` | - | _|| | | (_| | | | | | | __/ | _ | (_| | | | | (_| | | | | | | (_| | - |_| |_| \__,_|_| |_| |_|\___| |_| |_|\__,_|_| |_|\__,_|_|_|_| |_|\__, | - |___/ - - Handling of the stack frame. It is composed of three types: - 1) The type of the arguments which are pushed on the stack. - 2) The "between type" which consists of stuff the call of the - function pushes on the stack (like the return address and - the old base pointer for ia32). - 3) The Firm frame type which consists of all local variables - and the spills. -*/ - -static int get_stack_entity_offset(be_stack_layout_t *frame, ir_entity *ent, - int bias) -{ - ir_type *t = get_entity_owner(ent); - int ofs = get_entity_offset(ent); - - int index; - - /* Find the type the entity is contained in. */ - for (index = 0; index < N_FRAME_TYPES; ++index) { - if (frame->order[index] == t) - break; - /* Add the size of all the types below the one of the entity to the entity's offset */ - ofs += get_type_size_bytes(frame->order[index]); - } - - /* correct the offset by the initial position of the frame pointer */ - ofs -= frame->initial_offset; - - /* correct the offset with the current bias. */ - ofs += bias; - - return ofs; -} - -/** - * Retrieve the entity with given offset from a frame type. - */ -static ir_entity *search_ent_with_offset(ir_type *t, int offset) -{ - int i, n; - - for (i = 0, n = get_compound_n_members(t); i < n; ++i) { - ir_entity *ent = get_compound_member(t, i); - if (get_entity_offset(ent) == offset) - return ent; - } - - return NULL; -} - -static int stack_frame_compute_initial_offset(be_stack_layout_t *frame) -{ - ir_type *base = frame->stack_dir < 0 ? frame->between_type : frame->frame_type; - ir_entity *ent = search_ent_with_offset(base, 0); - - if (ent == NULL) { - frame->initial_offset - = frame->stack_dir < 0 ? get_type_size_bytes(frame->frame_type) : get_type_size_bytes(frame->between_type); - } else { - frame->initial_offset = get_stack_entity_offset(frame, ent, 0); - } - - return frame->initial_offset; -} - /** * Initializes the frame layout from parts * @@ -348,13 +288,12 @@ static int stack_frame_compute_initial_offset(be_stack_layout_t *frame) * @param args the stack argument layout type * @param between the between layout type * @param locals the method frame type - * @param stack_dir the stack direction: < 0 decreasing, > 0 increasing addresses * @param param_map an array mapping method argument positions to the stack argument type * * @return the initialized stack layout */ static be_stack_layout_t *stack_frame_init(be_stack_layout_t *frame, ir_type *args, - ir_type *between, ir_type *locals, int stack_dir, + ir_type *between, ir_type *locals, ir_entity *param_map[]) { frame->arg_type = args; @@ -362,33 +301,16 @@ static be_stack_layout_t *stack_frame_init(be_stack_layout_t *frame, ir_type *ar frame->frame_type = locals; frame->initial_offset = 0; frame->initial_bias = 0; - frame->stack_dir = stack_dir; frame->order[1] = between; frame->param_map = param_map; - if (stack_dir > 0) { - frame->order[0] = args; - frame->order[2] = locals; - } - else { - /* typical decreasing stack: locals have the - * lowest addresses, arguments the highest */ - frame->order[0] = locals; - frame->order[2] = args; - } + /* typical decreasing stack: locals have the + * lowest addresses, arguments the highest */ + frame->order[0] = locals; + frame->order[2] = args; return frame; } -/** - * Returns non-zero if the call argument at given position - * is transfered on the stack. - */ -static inline int is_on_stack(be_abi_call_t *call, int pos) -{ - be_abi_call_arg_t *arg = get_call_arg(call, 0, pos); - return arg && !arg->in_reg; -} - /* ____ _ _ / ___|__ _| | |___ @@ -410,19 +332,17 @@ static inline int is_on_stack(be_abi_call_t *call, int pos) */ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) { - ir_graph *irg = env->birg->irg; - const arch_env_t *arch_env = env->birg->main_env->arch_env; + ir_graph *irg = get_irn_irg(irn); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); ir_type *call_tp = get_Call_type(irn); ir_node *call_ptr = get_Call_ptr(irn); - int n_params = get_method_n_params(call_tp); + size_t n_params = get_method_n_params(call_tp); ir_node *curr_mem = get_Call_mem(irn); ir_node *bl = get_nodes_block(irn); int stack_size = 0; - int stack_dir = arch_env->stack_dir; const arch_register_t *sp = arch_env->sp; be_abi_call_t *call = be_abi_call_new(sp->reg_class); ir_mode *mach_mode = sp->reg_class->mode; - struct obstack *obst = be_get_birg_obst(irg); int no_alloc = call->flags.bits.frame_is_setup_on_call; int n_res = get_method_n_ress(call_tp); int do_seq = call->flags.bits.store_args_sequential && !no_alloc; @@ -432,49 +352,46 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) int n_stack_params = 0; int n_ins; - pset_new_t destroyed_regs, states; - pset_new_iterator_t iter; + const arch_register_t **states = NEW_ARR_F(const arch_register_t*, 0); + const arch_register_t **destroyed_regs = NEW_ARR_F(const arch_register_t*, 0); ir_node *low_call; ir_node **in; ir_node **res_projs; int n_reg_results = 0; - const arch_register_t *reg; const ir_edge_t *edge; int *reg_param_idxs; int *stack_param_idx; int i, n, destroy_all_regs; + size_t s; + size_t p; dbg_info *dbgi; - pset_new_init(&destroyed_regs); - pset_new_init(&states); - /* Let the isa fill out the abi description for that call node. */ arch_env_get_call_abi(arch_env, call_tp, call); /* Insert code to put the stack arguments on the stack. */ assert(get_Call_n_params(irn) == n_params); - assert(obstack_object_size(obst) == 0); stack_param_idx = ALLOCAN(int, n_params); - for (i = 0; i < n_params; ++i) { - be_abi_call_arg_t *arg = get_call_arg(call, 0, i); + for (p = 0; p < n_params; ++p) { + be_abi_call_arg_t *arg = get_call_arg(call, 0, p, 0); assert(arg); if (arg->on_stack) { - int arg_size = get_type_size_bytes(get_method_param_type(call_tp, i)); + int arg_size = get_type_size_bytes(get_method_param_type(call_tp, p)); stack_size += round_up2(arg->space_before, arg->alignment); stack_size += round_up2(arg_size, arg->alignment); stack_size += round_up2(arg->space_after, arg->alignment); - stack_param_idx[n_stack_params++] = i; + stack_param_idx[n_stack_params++] = p; } } /* Collect all arguments which are passed in registers. */ reg_param_idxs = ALLOCAN(int, n_params); - for (i = 0; i < n_params; ++i) { - be_abi_call_arg_t *arg = get_call_arg(call, 0, i); + for (p = 0; p < n_params; ++p) { + be_abi_call_arg_t *arg = get_call_arg(call, 0, p, 0); if (arg && arg->in_reg) { - reg_param_idxs[n_reg_params++] = i; + reg_param_idxs[n_reg_params++] = p; } } @@ -487,7 +404,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) * Note: we also have to do this for stack_size == 0, because we may have * to adjust stack alignment for the call. */ - if (stack_dir < 0 && !do_seq && !no_alloc) { + if (!do_seq && !no_alloc) { curr_sp = be_new_IncSP(sp, bl, curr_sp, stack_size, 1); } @@ -503,7 +420,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) * We must them reverse again if they are pushed (not stored) and the stack * direction is downwards. */ - if (call->flags.bits.left_to_right ^ (do_seq && stack_dir < 0)) { + if (call->flags.bits.left_to_right ^ do_seq) { for (i = 0; i < n_stack_params >> 1; ++i) { int other = n_stack_params - i - 1; int tmp = stack_param_idx[i]; @@ -519,7 +436,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) for (i = 0; i < n_stack_params; ++i) { int p = stack_param_idx[i]; - be_abi_call_arg_t *arg = get_call_arg(call, 0, p); + be_abi_call_arg_t *arg = get_call_arg(call, 0, p, 0); ir_node *param = get_Call_param(irn, p); ir_node *addr = curr_sp; ir_node *mem = NULL; @@ -553,9 +470,8 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) /* Insert a store for primitive arguments. */ if (is_atomic_type(param_type)) { - ir_node *store; - ir_node *mem_input = do_seq ? curr_mem : new_NoMem(); - store = new_rd_Store(dbgi, bl, mem_input, addr, param, 0); + ir_node *mem_input = do_seq ? curr_mem : new_r_NoMem(irg); + ir_node *store = new_rd_Store(dbgi, bl, mem_input, addr, param, cons_none); mem = new_r_Proj(store, mode_M, pn_Store_M); } else { /* Make a mem copy for compound arguments. */ @@ -563,7 +479,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) assert(mode_is_reference(get_irn_mode(param))); copy = new_rd_CopyB(dbgi, bl, curr_mem, addr, param, param_type); - mem = new_r_Proj(copy, mode_M, pn_CopyB_M_regular); + mem = new_r_Proj(copy, mode_M, pn_CopyB_M); } curr_ofs += param_size; @@ -598,30 +514,34 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) destroy_all_regs = 1; } - /* Put caller save into the destroyed set and state registers in the states set */ - for (i = 0, n = arch_env_get_n_reg_class(arch_env); i < n; ++i) { + /* Put caller save into the destroyed set and state registers in the states + * set */ + for (i = 0, n = arch_env->n_register_classes; i < n; ++i) { unsigned j; - const arch_register_class_t *cls = arch_env_get_reg_class(arch_env, i); + const arch_register_class_t *cls = &arch_env->register_classes[i]; for (j = 0; j < cls->n_regs; ++j) { const arch_register_t *reg = arch_register_for_index(cls, j); - if (destroy_all_regs || arch_register_type_is(reg, caller_save)) { - if (! arch_register_type_is(reg, ignore)) - pset_new_insert(&destroyed_regs, (void *) reg); + /* even if destroyed all is specified, neither SP nor FP are + * destroyed (else bad things will happen) */ + if (reg == arch_env->sp || reg == arch_env->bp) + continue; + + if (reg->type & arch_register_type_state) { + ARR_APP1(const arch_register_t*, destroyed_regs, reg); + ARR_APP1(const arch_register_t*, states, reg); + /* we're already in the destroyed set so no need for further + * checking */ + continue; } - if (arch_register_type_is(reg, state)) { - pset_new_insert(&destroyed_regs, (void*) reg); - pset_new_insert(&states, (void*) reg); + if (destroy_all_regs || (reg->type & arch_register_type_caller_save)) { + if (!(reg->type & arch_register_type_ignore)) { + ARR_APP1(const arch_register_t*, destroyed_regs, reg); + } } } } - if (destroy_all_regs) { - /* even if destroyed all is specified, neither SP nor FP are destroyed (else bad things will happen) */ - pset_new_remove(&destroyed_regs, arch_env->sp); - pset_new_remove(&destroyed_regs, arch_env->bp); - } - /* search the largest result proj number */ res_projs = ALLOCANZ(ir_node*, n_res); @@ -652,9 +572,8 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) */ n_reg_results = n_res; - assert(obstack_object_size(obst) == 0); n_ins = 0; - in = ALLOCAN(ir_node*, n_reg_params + pset_new_size(&states)); + in = ALLOCAN(ir_node*, n_reg_params + ARR_LEN(states)); /* make the back end call node and set its register requirements. */ for (i = 0; i < n_reg_params; ++i) { @@ -662,28 +581,25 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) } /* add state registers ins */ - foreach_pset_new(&states, reg, iter) { + for (s = 0; s < ARR_LEN(states); ++s) { + const arch_register_t *reg = states[s]; const arch_register_class_t *cls = arch_register_get_class(reg); -#if 0 - ir_node *regnode = be_abi_reg_map_get(env->regs, reg); - ir_fprintf(stderr, "Adding %+F\n", regnode); -#endif ir_node *regnode = new_r_Unknown(irg, arch_register_class_mode(cls)); in[n_ins++] = regnode; } - assert(n_ins == (int) (n_reg_params + pset_new_size(&states))); + assert(n_ins == (int) (n_reg_params + ARR_LEN(states))); /* ins collected, build the call */ if (env->call->flags.bits.call_has_imm && is_SymConst(call_ptr)) { /* direct call */ low_call = be_new_Call(dbgi, irg, bl, curr_mem, curr_sp, curr_sp, - n_reg_results + pn_be_Call_first_res + pset_new_size(&destroyed_regs), + n_reg_results + pn_be_Call_first_res + ARR_LEN(destroyed_regs), n_ins, in, get_Call_type(irn)); be_Call_set_entity(low_call, get_SymConst_entity(call_ptr)); } else { /* indirect call */ low_call = be_new_Call(dbgi, irg, bl, curr_mem, curr_sp, call_ptr, - n_reg_results + pn_be_Call_first_res + pset_new_size(&destroyed_regs), + n_reg_results + pn_be_Call_first_res + ARR_LEN(destroyed_regs), n_ins, in, get_Call_type(irn)); } be_Call_set_pop(low_call, call->pop); @@ -701,7 +617,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) for (i = 0; i < n_res; ++i) { int pn; ir_node *proj = res_projs[i]; - be_abi_call_arg_t *arg = get_call_arg(call, 1, i); + be_abi_call_arg_t *arg = get_call_arg(call, 1, i, 0); /* returns values on stack not supported yet */ assert(arg->in_reg); @@ -724,7 +640,16 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) } if (arg->in_reg) { - pset_new_remove(&destroyed_regs, arg->reg); + /* remove register from destroyed regs */ + size_t j; + size_t n = ARR_LEN(destroyed_regs); + for (j = 0; j < n; ++j) { + if (destroyed_regs[j] == arg->reg) { + destroyed_regs[j] = destroyed_regs[n-1]; + ARR_SHRINKLEN(destroyed_regs,n-1); + break; + } + } } } @@ -732,28 +657,29 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) Set the register class of the call address to the backend provided class (default: stack pointer class) */ - be_node_set_reg_class_in(low_call, be_pos_Call_ptr, call->cls_addr); + be_node_set_reg_class_in(low_call, n_be_Call_ptr, call->cls_addr); DBG((dbg, LEVEL_3, "\tcreated backend call %+F\n", low_call)); /* Set the register classes and constraints of the Call parameters. */ for (i = 0; i < n_reg_params; ++i) { int index = reg_param_idxs[i]; - be_abi_call_arg_t *arg = get_call_arg(call, 0, index); + be_abi_call_arg_t *arg = get_call_arg(call, 0, index, 0); assert(arg->reg != NULL); - be_set_constr_single_reg_in(low_call, be_pos_Call_first_arg + i, - arg->reg, 0); + be_set_constr_single_reg_in(low_call, n_be_Call_first_arg + i, + arg->reg, arch_register_req_type_none); } /* Set the register constraints of the results. */ for (i = 0; i < n_res; ++i) { ir_node *proj = res_projs[i]; - const be_abi_call_arg_t *arg = get_call_arg(call, 1, i); + const be_abi_call_arg_t *arg = get_call_arg(call, 1, i, 0); int pn = get_Proj_proj(proj); assert(arg->in_reg); - be_set_constr_single_reg_out(low_call, pn, arg->reg, 0); + be_set_constr_single_reg_out(low_call, pn, arg->reg, + arch_register_req_type_none); arch_set_irn_register(proj, arg->reg); } exchange(irn, low_call); @@ -766,26 +692,27 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) /* Make additional projs for the caller save registers and the Keep node which keeps them alive. */ { - const arch_register_t *reg; ir_node **in, *keep; int i; + size_t d; int n = 0; int curr_res_proj = pn_be_Call_first_res + n_reg_results; - pset_new_iterator_t iter; int n_ins; - n_ins = (int)pset_new_size(&destroyed_regs) + n_reg_results + 1; + n_ins = ARR_LEN(destroyed_regs) + n_reg_results + 1; in = ALLOCAN(ir_node *, n_ins); /* also keep the stack pointer */ set_irn_link(curr_sp, (void*) sp); in[n++] = curr_sp; - foreach_pset_new(&destroyed_regs, reg, iter) { + for (d = 0; d < ARR_LEN(destroyed_regs); ++d) { + const arch_register_t *reg = destroyed_regs[d]; ir_node *proj = new_r_Proj(low_call, reg->reg_class->mode, curr_res_proj); /* memorize the register in the link field. we need afterwards to set the register class of the keep correctly. */ - be_set_constr_single_reg_out(low_call, curr_res_proj, reg, 0); + be_set_constr_single_reg_out(low_call, curr_res_proj, reg, + arch_register_req_type_none); arch_set_irn_register(proj, reg); set_irn_link(proj, (void*) reg); @@ -804,7 +731,7 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) /* create the Keep for the caller save registers */ keep = be_new_Keep(bl, n, in); for (i = 0; i < n; ++i) { - const arch_register_t *reg = get_irn_link(in[i]); + const arch_register_t *reg = (const arch_register_t*)get_irn_link(in[i]); be_node_set_reg_class_in(keep, i, reg->reg_class); } } @@ -836,8 +763,8 @@ static ir_node *adjust_call(be_abi_irg_t *env, ir_node *irn, ir_node *curr_sp) be_abi_call_free(call); - pset_new_destroy(&states); - pset_new_destroy(&destroyed_regs); + DEL_ARR_F(states); + DEL_ARR_F(destroyed_regs); return curr_sp; } @@ -856,10 +783,10 @@ static ir_node *adjust_alloc_size(unsigned stack_alignment, ir_node *size, ir_node *block, dbg_info *dbg) { if (stack_alignment > 1) { - ir_mode *mode; - tarval *tv; - ir_node *mask; - ir_graph *irg; + ir_mode *mode; + ir_tarval *tv; + ir_node *mask; + ir_graph *irg; assert(is_po2(stack_alignment)); @@ -881,29 +808,24 @@ static ir_node *adjust_alloc_size(unsigned stack_alignment, ir_node *size, */ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp) { - ir_node *block; - ir_graph *irg; - ir_node *alloc_mem; - ir_node *alloc_res; - ir_type *type; - dbg_info *dbg; + ir_node *block = get_nodes_block(alloc); + ir_graph *irg = get_Block_irg(block); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); + ir_node *alloc_mem = NULL; + ir_node *alloc_res = NULL; + ir_type *type = get_Alloc_type(alloc); + dbg_info *dbg; const ir_edge_t *edge; ir_node *new_alloc; ir_node *count; ir_node *size; - ir_node *addr; ir_node *ins[2]; unsigned stack_alignment; + /* all non-stack Alloc nodes should already be lowered before the backend */ assert(get_Alloc_where(alloc) == stack_alloc); - block = get_nodes_block(alloc); - irg = get_Block_irg(block); - alloc_mem = NULL; - alloc_res = NULL; - type = get_Alloc_type(alloc); - foreach_out_edge(alloc, edge) { ir_node *irn = get_edge_src_irn(edge); @@ -933,11 +855,11 @@ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp /* we might need to multiply the count with the element size */ if (type != firm_unknown_type && get_type_size_bytes(type) != 1) { - ir_mode *mode = get_irn_mode(count); - tarval *tv = new_tarval_from_long(get_type_size_bytes(type), - mode); - ir_node *cnst = new_rd_Const(dbg, irg, tv); - size = new_rd_Mul(dbg, block, count, cnst, mode); + ir_mode *mode = get_irn_mode(count); + ir_tarval *tv = new_tarval_from_long(get_type_size_bytes(type), + mode); + ir_node *cnst = new_rd_Const(dbg, irg, tv); + size = new_rd_Mul(dbg, block, count, cnst, mode); } else { size = count; } @@ -946,9 +868,9 @@ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp We cannot omit it. */ env->call->flags.bits.try_omit_fp = 0; - stack_alignment = 1 << env->arch_env->stack_alignment; + stack_alignment = 1 << arch_env->stack_alignment; size = adjust_alloc_size(stack_alignment, size, block, dbg); - new_alloc = be_new_AddSP(env->arch_env->sp, block, curr_sp, size); + new_alloc = be_new_AddSP(arch_env->sp, block, curr_sp, size); set_irn_dbg_info(new_alloc, dbg); if (alloc_mem != NULL) { @@ -971,7 +893,6 @@ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp /* fix projnum of alloca res */ set_Proj_proj(alloc_res, pn_be_AddSP_res); - addr = alloc_res; curr_sp = new_r_Proj(new_alloc, get_irn_mode(curr_sp), pn_be_AddSP_sp); return curr_sp; @@ -983,41 +904,38 @@ static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp */ static ir_node *adjust_free(be_abi_irg_t *env, ir_node *free, ir_node *curr_sp) { - ir_node *block; - ir_graph *irg; - ir_node *subsp, *mem, *res, *size, *sync; - ir_type *type; + ir_node *block = get_nodes_block(free); + ir_graph *irg = get_irn_irg(free); + ir_type *type = get_Free_type(free); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); + ir_mode *sp_mode = arch_env->sp->reg_class->mode; + dbg_info *dbg = get_irn_dbg_info(free); + ir_node *subsp, *mem, *res, *size, *sync; ir_node *in[2]; - ir_mode *sp_mode; unsigned stack_alignment; - dbg_info *dbg; + /* all non-stack-alloc Free nodes should already be lowered before the + * backend phase */ assert(get_Free_where(free) == stack_alloc); - block = get_nodes_block(free); - irg = get_irn_irg(block); - type = get_Free_type(free); - sp_mode = env->arch_env->sp->reg_class->mode; - dbg = get_irn_dbg_info(free); - /* we might need to multiply the size with the element size */ if (type != firm_unknown_type && get_type_size_bytes(type) != 1) { - tarval *tv = new_tarval_from_long(get_type_size_bytes(type), mode_Iu); - ir_node *cnst = new_rd_Const(dbg, irg, tv); - ir_node *mul = new_rd_Mul(dbg, block, get_Free_size(free), - cnst, mode_Iu); + ir_tarval *tv = new_tarval_from_long(get_type_size_bytes(type), mode_Iu); + ir_node *cnst = new_rd_Const(dbg, irg, tv); + ir_node *mul = new_rd_Mul(dbg, block, get_Free_size(free), + cnst, mode_Iu); size = mul; } else { size = get_Free_size(free); } - stack_alignment = 1 << env->arch_env->stack_alignment; + stack_alignment = 1 << arch_env->stack_alignment; size = adjust_alloc_size(stack_alignment, size, block, dbg); /* The stack pointer will be modified in an unknown manner. We cannot omit it. */ env->call->flags.bits.try_omit_fp = 0; - subsp = be_new_SubSP(env->arch_env->sp, block, curr_sp, size); + subsp = be_new_SubSP(arch_env->sp, block, curr_sp, size); set_irn_dbg_info(subsp, dbg); mem = new_r_Proj(subsp, mode_M, pn_be_SubSP_M); @@ -1056,6 +974,7 @@ static int cmp_call_dependency(const void *c1, const void *c2) { ir_node *n1 = *(ir_node **) c1; ir_node *n2 = *(ir_node **) c2; + unsigned h1, h2; /* Classical qsort() comparison function behavior: @@ -1070,7 +989,16 @@ static int cmp_call_dependency(const void *c1, const void *c2) return 1; /* The nodes have no depth order, but we need a total order because qsort() - * is not stable. */ + * is not stable. + * + * Additionally, we need to respect transitive dependencies. Consider a + * Call a depending on Call b and an independent Call c. + * We MUST NOT order c > a and b > c. */ + h1 = get_irn_height(ir_heights, n1); + h2 = get_irn_height(ir_heights, n2); + if (h1 < h2) return -1; + if (h1 > h2) return 1; + /* Same height, so use a random (but stable) order */ return get_irn_idx(n1) - get_irn_idx(n2); } @@ -1080,8 +1008,8 @@ static int cmp_call_dependency(const void *c1, const void *c2) */ static void link_ops_in_block_walker(ir_node *irn, void *data) { - be_abi_irg_t *env = data; - ir_opcode code = get_irn_opcode(irn); + be_abi_irg_t *env = (be_abi_irg_t*)data; + unsigned code = get_irn_opcode(irn); if (code == iro_Call || (code == iro_Alloc && get_Alloc_where(irn) == stack_alloc) || @@ -1098,7 +1026,7 @@ static void link_ops_in_block_walker(ir_node *irn, void *data) if (code == iro_Builtin && get_Builtin_kind(irn) == ir_bk_return_address) { ir_node *param = get_Builtin_param(irn, 0); - tarval *tv = get_Const_tarval(param); + ir_tarval *tv = get_Const_tarval(param); unsigned long value = get_tarval_long(tv); /* use ebp, so the climbframe algo works... */ if (value > 0) { @@ -1111,12 +1039,12 @@ static void link_ops_in_block_walker(ir_node *irn, void *data) * Block-walker: * Process all Call/Alloc/Free nodes inside a basic block. * Note that the link field of the block must contain a linked list of all - * Call nodes inside the Block. We first order this list according to data dependency - * and that connect the calls together. + * nodes inside the Block. We first order this list according to data dependency + * and that connect the nodes together. */ static void process_ops_in_block(ir_node *bl, void *data) { - be_abi_irg_t *env = data; + be_abi_irg_t *env = (be_abi_irg_t*)data; ir_node *curr_sp = env->init_sp; ir_node *irn; ir_node **nodes; @@ -1124,12 +1052,14 @@ static void process_ops_in_block(ir_node *bl, void *data) int n_nodes; n_nodes = 0; - for (irn = get_irn_link(bl); irn != NULL; irn = get_irn_link(irn)) { + for (irn = (ir_node*)get_irn_link(bl); irn != NULL; + irn = (ir_node*)get_irn_link(irn)) { ++n_nodes; } nodes = ALLOCAN(ir_node*, n_nodes); - for (irn = get_irn_link(bl), n = 0; irn; irn = get_irn_link(irn), ++n) { + for (irn = (ir_node*)get_irn_link(bl), n = 0; irn != NULL; + irn = (ir_node*)get_irn_link(irn), ++n) { nodes[n] = irn; } @@ -1163,7 +1093,6 @@ static void process_ops_in_block(ir_node *bl, void *data) break; default: panic("invalid call"); - break; } } @@ -1183,15 +1112,15 @@ static void process_ops_in_block(ir_node *bl, void *data) /** * Adjust all call nodes in the graph to the ABI conventions. */ -static void process_calls(be_abi_irg_t *env) +static void process_calls(ir_graph *irg) { - ir_graph *irg = env->birg->irg; + be_abi_irg_t *abi = be_get_irg_abi(irg); - env->call->flags.bits.irg_is_leaf = 1; - irg_walk_graph(irg, firm_clear_link, link_ops_in_block_walker, env); + abi->call->flags.bits.irg_is_leaf = 1; + irg_walk_graph(irg, firm_clear_link, link_ops_in_block_walker, abi); - ir_heights = heights_new(env->birg->irg); - irg_block_walk_graph(irg, NULL, process_ops_in_block, env); + ir_heights = heights_new(irg); + irg_block_walk_graph(irg, NULL, process_ops_in_block, abi); heights_free(ir_heights); } @@ -1208,28 +1137,29 @@ static void process_calls(be_abi_irg_t *env) * * @return the stack argument layout type */ -static ir_type *compute_arg_type(be_abi_irg_t *env, be_abi_call_t *call, +static ir_type *compute_arg_type(be_abi_irg_t *env, ir_graph *irg, + be_abi_call_t *call, ir_type *method_type, ir_type *val_param_tp, ir_entity ***param_map) { int dir = env->call->flags.bits.left_to_right ? 1 : -1; - int inc = env->birg->main_env->arch_env->stack_dir * dir; + int inc = -dir; int n = get_method_n_params(method_type); int curr = inc > 0 ? 0 : n - 1; - struct obstack *obst = be_get_birg_obst(env->irg); + struct obstack *obst = be_get_be_obst(irg); int ofs = 0; char buf[128]; ir_type *res; int i; - ident *id = get_entity_ident(get_irg_entity(env->birg->irg)); + ident *id = get_entity_ident(get_irg_entity(irg)); ir_entity **map; *param_map = map = OALLOCN(obst, ir_entity*, n); res = new_type_struct(id_mangle_u(id, new_id_from_chars("arg_type", 8))); for (i = 0; i < n; ++i, curr += inc) { ir_type *param_type = get_method_param_type(method_type, curr); - be_abi_call_arg_t *arg = get_call_arg(call, 0, curr); + be_abi_call_arg_t *arg = get_call_arg(call, 0, curr, 1); map[i] = NULL; if (arg->on_stack) { @@ -1264,108 +1194,49 @@ typedef struct { static int cmp_regs(const void *a, const void *b) { - const reg_node_map_t *p = a; - const reg_node_map_t *q = b; + const reg_node_map_t *p = (const reg_node_map_t*)a; + const reg_node_map_t *q = (const reg_node_map_t*)b; if (p->reg->reg_class == q->reg->reg_class) return p->reg->index - q->reg->index; else - return p->reg->reg_class - q->reg->reg_class; + return p->reg->reg_class < q->reg->reg_class ? -1 : +1; } static void reg_map_to_arr(reg_node_map_t *res, pmap *reg_map) { pmap_entry *ent; - int n = pmap_count(reg_map); - int i = 0; + size_t n = pmap_count(reg_map); + size_t i = 0; foreach_pmap(reg_map, ent) { - res[i].reg = ent->key; - res[i].irn = ent->value; + res[i].reg = (const arch_register_t*)ent->key; + res[i].irn = (ir_node*)ent->value; i++; } qsort(res, n, sizeof(res[0]), cmp_regs); } -/** - * Creates a barrier. - */ -static ir_node *create_barrier(ir_node *bl, ir_node **mem, pmap *regs, - int in_req) -{ - int n_regs = pmap_count(regs); - int n; - ir_node *irn; - ir_node **in; - reg_node_map_t *rm; - - in = ALLOCAN(ir_node*, n_regs+1); - rm = ALLOCAN(reg_node_map_t, n_regs); - reg_map_to_arr(rm, regs); - for (n = 0; n < n_regs; ++n) { - in[n] = rm[n].irn; - } - - if (mem) { - in[n++] = *mem; - } - - irn = be_new_Barrier(bl, n, in); - - for (n = 0; n < n_regs; ++n) { - ir_node *pred = rm[n].irn; - const arch_register_t *reg = rm[n].reg; - arch_register_type_t add_type = 0; - ir_node *proj; - const backend_info_t *info; - - /* stupid workaround for now... as not all nodes report register - * requirements. */ - info = be_get_info(skip_Proj(pred)); - if (info != NULL && info->out_infos != NULL) { - const arch_register_req_t *ireq = arch_get_register_req_out(pred); - if (ireq->type & arch_register_req_type_ignore) - add_type |= arch_register_req_type_ignore; - if (ireq->type & arch_register_req_type_produces_sp) - add_type |= arch_register_req_type_produces_sp; - } - - proj = new_r_Proj(irn, get_irn_mode(pred), n); - be_node_set_reg_class_in(irn, n, reg->reg_class); - if (in_req) - be_set_constr_single_reg_in(irn, n, reg, 0); - be_set_constr_single_reg_out(irn, n, reg, add_type); - arch_set_irn_register(proj, reg); - - pmap_insert(regs, (void *) reg, proj); - } - - if (mem) { - *mem = new_r_Proj(irn, mode_M, n); - } - - return irn; -} - /** * Creates a be_Return for a Return node. * - * @param @env the abi environment - * @param irn the Return node or NULL if there was none - * @param bl the block where the be_Retun should be placed - * @param mem the current memory - * @param n_res number of return results + * @param @env the abi environment + * @param irn the Return node or NULL if there was none + * @param bl the block where the be_Retun should be placed + * @param mem the current memory + * @param n_res number of return results */ static ir_node *create_be_return(be_abi_irg_t *env, ir_node *irn, ir_node *bl, ir_node *mem, int n_res) { be_abi_call_t *call = env->call; - const arch_env_t *arch_env = env->birg->main_env->arch_env; + ir_graph *irg = get_Block_irg(bl); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); dbg_info *dbgi; pmap *reg_map = pmap_create(); - ir_node *keep = pmap_get(env->keep_map, bl); - int in_max; + ir_node *keep = (ir_node*)pmap_get(env->keep_map, bl); + size_t in_max; ir_node *ret; int i, n; unsigned pop; @@ -1385,30 +1256,26 @@ static ir_node *create_be_return(be_abi_irg_t *env, ir_node *irn, ir_node *bl, if (keep) { stack = get_irn_n(keep, 0); kill_node(keep); - remove_End_keepalive(get_irg_end(env->birg->irg), keep); + remove_End_keepalive(get_irg_end(irg), keep); } /* Insert results for Return into the register map. */ for (i = 0; i < n_res; ++i) { ir_node *res = get_Return_res(irn, i); - be_abi_call_arg_t *arg = get_call_arg(call, 1, i); + be_abi_call_arg_t *arg = get_call_arg(call, 1, i, 1); assert(arg->in_reg && "return value must be passed in register"); pmap_insert(reg_map, (void *) arg->reg, res); } /* Add uses of the callee save registers. */ foreach_pmap(env->regs, ent) { - const arch_register_t *reg = ent->key; - if (arch_register_type_is(reg, callee_save) || arch_register_type_is(reg, ignore)) + const arch_register_t *reg = (const arch_register_t*)ent->key; + if (reg->type & (arch_register_type_callee_save | arch_register_type_ignore)) pmap_insert(reg_map, ent->key, ent->value); } be_abi_reg_map_set(reg_map, arch_env->sp, stack); - /* Make the Epilogue node and call the arch's epilogue maker. */ - create_barrier(bl, &mem, reg_map, 1); - call->cb->epilogue(env->cb, bl, &mem, reg_map); - /* Maximum size of the in array for Return nodes is return args + callee save/ignore registers + memory + stack pointer @@ -1427,7 +1294,7 @@ static ir_node *create_be_return(be_abi_irg_t *env, ir_node *irn, ir_node *bl, /* clear SP entry, since it has already been grown. */ pmap_insert(reg_map, (void *) arch_env->sp, NULL); for (i = 0; i < n_res; ++i) { - be_abi_call_arg_t *arg = get_call_arg(call, 1, i); + be_abi_call_arg_t *arg = get_call_arg(call, 1, i, 1); in[n] = be_abi_reg_map_get(reg_map, arg->reg); regs[n++] = arg->reg; @@ -1439,8 +1306,8 @@ static ir_node *create_be_return(be_abi_irg_t *env, ir_node *irn, ir_node *bl, /* grow the rest of the stuff. */ foreach_pmap(reg_map, ent) { if (ent->value) { - in[n] = ent->value; - regs[n++] = ent->key; + in[n] = (ir_node*)ent->value; + regs[n++] = (const arch_register_t*)ent->key; } } @@ -1452,14 +1319,14 @@ static ir_node *create_be_return(be_abi_irg_t *env, ir_node *irn, ir_node *bl, } /* we have to pop the shadow parameter in in case of struct returns */ pop = call->pop; - ret = be_new_Return(dbgi, env->birg->irg, bl, n_res, pop, n, in); + ret = be_new_Return(dbgi, irg, bl, n_res, pop, n, in); /* Set the register classes of the return's parameter accordingly. */ for (i = 0; i < n; ++i) { if (regs[i] == NULL) continue; - be_node_set_reg_class_in(ret, i, regs[i]->reg_class); + be_set_constr_single_reg_in(ret, i, regs[i], arch_register_req_type_none); } /* Free the space of the Epilog's in array and the register <-> proj map. */ @@ -1493,7 +1360,7 @@ typedef struct lower_frame_sels_env_t { */ static ir_entity *get_argument_entity(ir_entity *ent, lower_frame_sels_env_t *ctx) { - ir_entity *argument_ent = get_entity_link(ent); + ir_entity *argument_ent = (ir_entity*)get_entity_link(ent); if (argument_ent == NULL) { /* we have NO argument entity yet: This is bad, as we will @@ -1526,7 +1393,7 @@ static ir_entity *get_argument_entity(ir_entity *ent, lower_frame_sels_env_t *ct */ static void lower_frame_sels_walker(ir_node *irn, void *data) { - lower_frame_sels_env_t *ctx = data; + lower_frame_sels_env_t *ctx = (lower_frame_sels_env_t*)data; if (is_Sel(irn)) { ir_node *ptr = get_Sel_ptr(irn); @@ -1575,10 +1442,11 @@ static void lower_frame_sels_walker(ir_node *irn, void *data) * In the default case we move the entity to the frame type and create * a backing store into the first block. */ -static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *value_param_list) +static void fix_address_of_parameter_access(be_abi_irg_t *env, ir_graph *irg, + ent_pos_pair *value_param_list) { - be_abi_call_t *call = env->call; - ir_graph *irg = env->birg->irg; + be_abi_call_t *call = env->call; + const arch_env_t *arch_env = be_get_irg_arch_env(irg); ent_pos_pair *entry, *new_list; ir_type *frame_tp; int i, n = ARR_LEN(value_param_list); @@ -1586,7 +1454,7 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val new_list = NULL; for (i = 0; i < n; ++i) { int pos = value_param_list[i].pos; - be_abi_call_arg_t *arg = get_call_arg(call, 0, pos); + be_abi_call_arg_t *arg = get_call_arg(call, 0, pos, 1); if (arg->in_reg) { DBG((dbg, LEVEL_2, "\targ #%d need backing store\n", pos)); @@ -1597,16 +1465,11 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val if (new_list != NULL) { /* ok, change the graph */ ir_node *start_bl = get_irg_start_block(irg); - ir_node *first_bl = NULL; - ir_node *frame, *imem, *nmem, *store, *mem, *args, *args_bl; - const ir_edge_t *edge; + ir_node *first_bl = get_first_block_succ(start_bl); + ir_node *frame, *imem, *nmem, *store, *mem, *args; optimization_state_t state; unsigned offset; - foreach_block_succ(start_bl, edge) { - first_bl = get_edge_src_irn(edge); - break; - } assert(first_bl && first_bl != start_bl); /* we had already removed critical edges, so the following assertion should be always true. */ @@ -1622,12 +1485,11 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val restore_optimization_state(&state); /* reroute all edges to the new memory source */ - edges_reroute(imem, nmem, irg); + edges_reroute(imem, nmem); store = NULL; mem = imem; args = get_irg_args(irg); - args_bl = get_nodes_block(args); for (entry = new_list; entry != NULL; entry = entry->next) { int i = entry->pos; ir_type *tp = get_entity_type(entry->ent); @@ -1635,14 +1497,14 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val ir_node *addr; /* address for the backing store */ - addr = be_new_FrameAddr(env->arch_env->sp->reg_class, first_bl, frame, entry->ent); + addr = be_new_FrameAddr(arch_env->sp->reg_class, first_bl, frame, entry->ent); if (store) mem = new_r_Proj(store, mode_M, pn_Store_M); /* the backing store itself */ store = new_r_Store(first_bl, mem, addr, - new_r_Proj(args, mode, i), 0); + new_r_Proj(args, mode, i), cons_none); } /* the new memory Proj gets the last Proj from store */ set_Proj_pred(nmem, store); @@ -1658,9 +1520,10 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val for (entry = new_list; entry != NULL; entry = entry->next) { ir_entity *ent = entry->ent; - /* If the entity is still on the argument type, move it to the frame type. - This happens if the value_param type was build due to compound - params. */ + /* If the entity is still on the argument type, move it to the + * frame type. + * This happens if the value_param type was build due to compound + * params. */ if (get_entity_owner(ent) != frame_tp) { ir_type *tp = get_entity_type(ent); unsigned align = get_type_alignment_bytes(tp); @@ -1668,7 +1531,6 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val offset += align - 1; offset &= ~(align - 1); set_entity_owner(ent, frame_tp); - add_class_member(frame_tp, ent); /* must be automatic to set a fixed layout */ set_entity_offset(ent, offset); offset += get_type_size_bytes(tp); @@ -1687,25 +1549,13 @@ static void fix_address_of_parameter_access(be_abi_irg_t *env, ent_pos_pair *val */ static void fix_start_block(ir_graph *irg) { - ir_node *initial_X = get_irg_initial_exec(irg); - ir_node *start_block = get_irg_start_block(irg); - const ir_edge_t *edge; + ir_node *initial_X = get_irg_initial_exec(irg); + ir_node *start_block = get_irg_start_block(irg); + ir_node *jmp = new_r_Jmp(start_block); assert(is_Proj(initial_X)); - - foreach_out_edge(initial_X, edge) { - ir_node *block = get_edge_src_irn(edge); - - if (is_Anchor(block)) - continue; - if (block != start_block) { - ir_node *jmp = new_r_Jmp(start_block); - set_Block_cfgpred(block, get_edge_src_pos(edge), jmp); - set_irg_initial_exec(irg, jmp); - return; - } - } - panic("Initial exec has no follow block in %+F", irg); + exchange(initial_X, jmp); + set_irg_initial_exec(irg, new_r_Bad(irg)); } /** @@ -1713,7 +1563,7 @@ static void fix_start_block(ir_graph *irg) */ static void update_outer_frame_sels(ir_node *irn, void *env) { - lower_frame_sels_env_t *ctx = env; + lower_frame_sels_env_t *ctx = (lower_frame_sels_env_t*)env; ir_node *ptr; ir_entity *ent; int pos = 0; @@ -1780,18 +1630,20 @@ static void fix_outer_variable_access(be_abi_irg_t *env, /** * Modify the irg itself and the frame type. */ -static void modify_irg(be_abi_irg_t *env) +static void modify_irg(ir_graph *irg) { - be_abi_call_t *call = env->call; - const arch_env_t *arch_env= env->birg->main_env->arch_env; - const arch_register_t *sp = arch_env->sp; - ir_graph *irg = env->birg->irg; + be_abi_irg_t *env = be_get_irg_abi(irg); + be_abi_call_t *call = env->call; + const arch_env_t *arch_env = be_get_irg_arch_env(irg); + const arch_register_t *sp = arch_env->sp; + ir_type *method_type = get_entity_type(get_irg_entity(irg)); + be_irg_t *birg = be_birg_from_irg(irg); + struct obstack *obst = be_get_be_obst(irg); + be_stack_layout_t *stack_layout = be_get_irg_stack_layout(irg); ir_node *end; ir_node *old_mem; ir_node *new_mem_proj; ir_node *mem; - ir_type *method_type = get_entity_type(get_irg_entity(irg)); - struct obstack *obst = be_get_birg_obst(irg); int n_params; int i, n; @@ -1811,8 +1663,6 @@ static void modify_irg(be_abi_irg_t *env) DBG((dbg, LEVEL_1, "introducing abi on %+F\n", irg)); - /* Must fetch memory here, otherwise the start Barrier gets the wrong - * memory, which leads to loops in the DAG. */ old_mem = get_irg_initial_mem(irg); irp_reserve_resources(irp, IR_RESOURCE_ENTITY_LINK); @@ -1830,13 +1680,13 @@ static void modify_irg(be_abi_irg_t *env) } } - arg_type = compute_arg_type(env, call, method_type, tp, ¶m_map); + arg_type = compute_arg_type(env, irg, call, method_type, tp, ¶m_map); /* Convert the Sel nodes in the irg to frame addr nodes: */ ctx.value_param_list = NEW_ARR_F(ent_pos_pair, 0); ctx.frame = get_irg_frame(irg); - ctx.sp_class = env->arch_env->sp->reg_class; - ctx.link_class = env->arch_env->link_class; + ctx.sp_class = arch_env->sp->reg_class; + ctx.link_class = arch_env->link_class; ctx.frame_tp = get_irg_frame_type(irg); /* layout the stackframe now */ @@ -1878,7 +1728,7 @@ static void modify_irg(be_abi_irg_t *env) * In the default case we move the entity to the frame type and create * a backing store into the first block. */ - fix_address_of_parameter_access(env, ctx.value_param_list); + fix_address_of_parameter_access(env, irg, ctx.value_param_list); DEL_ARR_F(ctx.value_param_list); irp_free_resources(irp, IR_RESOURCE_ENTITY_LINK); @@ -1894,12 +1744,14 @@ static void modify_irg(be_abi_irg_t *env) } } - bet_type = call->cb->get_between_type(env->cb); - stack_frame_init(&env->frame, arg_type, bet_type, get_irg_frame_type(irg), arch_env->stack_dir, param_map); + stack_layout->sp_relative = call->flags.bits.try_omit_fp; + bet_type = call->cb->get_between_type(irg); + stack_frame_init(stack_layout, arg_type, bet_type, + get_irg_frame_type(irg), param_map); /* Count the register params and add them to the number of Projs for the RegParams node */ for (i = 0; i < n_params; ++i) { - be_abi_call_arg_t *arg = get_call_arg(call, 0, i); + be_abi_call_arg_t *arg = get_call_arg(call, 0, i, 1); if (arg->in_reg && args[i]) { assert(arg->reg != sp && "cannot use stack pointer as parameter register"); assert(i == get_Proj_proj(args[i])); @@ -1911,17 +1763,19 @@ static void modify_irg(be_abi_irg_t *env) } /* Collect all callee-save registers */ - for (i = 0, n = arch_env_get_n_reg_class(arch_env); i < n; ++i) { - const arch_register_class_t *cls = arch_env_get_reg_class(arch_env, i); + for (i = 0, n = arch_env->n_register_classes; i < n; ++i) { + const arch_register_class_t *cls = &arch_env->register_classes[i]; for (j = 0; j < cls->n_regs; ++j) { const arch_register_t *reg = &cls->regs[j]; - if (arch_register_type_is(reg, callee_save) || - arch_register_type_is(reg, state)) { + if (reg->type & (arch_register_type_callee_save | arch_register_type_state)) { pmap_insert(env->regs, (void *) reg, NULL); } } } + fp_reg = call->flags.bits.try_omit_fp ? arch_env->sp : arch_env->bp; + rbitset_clear(birg->allocatable_regs, fp_reg->global_index); + /* handle start block here (place a jump in the block) */ fix_start_block(irg); @@ -1929,26 +1783,29 @@ static void modify_irg(be_abi_irg_t *env) pmap_insert(env->regs, (void *) arch_env->bp, NULL); start_bl = get_irg_start_block(irg); env->start = be_new_Start(NULL, start_bl, pmap_count(env->regs) + 1); + set_irg_start(irg, env->start); /* * make proj nodes for the callee save registers. * memorize them, since Return nodes get those as inputs. * - * Note, that if a register corresponds to an argument, the regs map contains - * the old Proj from start for that argument. + * Note, that if a register corresponds to an argument, the regs map + * contains the old Proj from start for that argument. */ - rm = ALLOCAN(reg_node_map_t, pmap_count(env->regs)); reg_map_to_arr(rm, env->regs); for (i = 0, n = pmap_count(env->regs); i < n; ++i) { - arch_register_t *reg = (void *) rm[i].reg; + const arch_register_t *reg = rm[i].reg; ir_mode *mode = reg->reg_class->mode; long nr = i; - arch_register_req_type_t add_type = 0; + arch_register_req_type_t add_type = arch_register_req_type_none; ir_node *proj; if (reg == sp) - add_type |= arch_register_req_type_produces_sp | arch_register_req_type_ignore; + add_type |= arch_register_req_type_produces_sp; + if (!rbitset_is_set(birg->allocatable_regs, reg->global_index)) { + add_type |= arch_register_req_type_ignore; + } assert(nr >= 0); proj = new_r_Proj(env->start, mode, nr + 1); @@ -1966,23 +1823,11 @@ static void modify_irg(be_abi_irg_t *env) mem = new_mem_proj; set_irg_initial_mem(irg, mem); - /* Generate the Prologue */ - fp_reg = call->cb->prologue(env->cb, &mem, env->regs, &env->frame.initial_bias); - - /* do the stack allocation BEFORE the barrier, or spill code - might be added before it */ env->init_sp = be_abi_reg_map_get(env->regs, sp); - env->init_sp = be_new_IncSP(sp, start_bl, env->init_sp, BE_STACK_FRAME_SIZE_EXPAND, 0); - be_abi_reg_map_set(env->regs, sp, env->init_sp); - - create_barrier(start_bl, &mem, env->regs, 0); - - env->init_sp = be_abi_reg_map_get(env->regs, sp); - arch_set_irn_register(env->init_sp, sp); + /* set new frame_pointer */ frame_pointer = be_abi_reg_map_get(env->regs, fp_reg); set_irg_frame(irg, frame_pointer); - pset_insert_ptr(env->ignore_regs, fp_reg); /* rewire old mem users to new mem */ exchange(old_mem, mem); @@ -2004,11 +1849,11 @@ static void modify_irg(be_abi_irg_t *env) ir_mode *mode; nr = MIN(nr, n_params); - arg = get_call_arg(call, 0, nr); + arg = get_call_arg(call, 0, nr, 1); param_type = get_method_param_type(method_type, nr); if (arg->in_reg) { - repl = pmap_get(env->regs, (void *) arg->reg); + repl = (ir_node*)pmap_get(env->regs, arg->reg); } else if (arg->on_stack) { ir_node *addr = be_new_FrameAddr(sp->reg_class, start_bl, frame_pointer, arg->stack_ent); @@ -2017,7 +1862,7 @@ static void modify_irg(be_abi_irg_t *env) ir_mode *mode = get_type_mode(param_type); ir_mode *load_mode = arg->load_mode; - ir_node *load = new_r_Load(start_bl, new_NoMem(), addr, load_mode, cons_floats); + ir_node *load = new_r_Load(start_bl, new_r_NoMem(irg), addr, load_mode, cons_floats); repl = new_r_Proj(load, load_mode, pn_Load_res); if (mode != load_mode) { @@ -2066,20 +1911,21 @@ static void modify_irg(be_abi_irg_t *env) } /** Fix the state inputs of calls that still hang on unknowns */ -static void fix_call_state_inputs(be_abi_irg_t *env) +static void fix_call_state_inputs(ir_graph *irg) { - const arch_env_t *arch_env = env->arch_env; + be_abi_irg_t *env = be_get_irg_abi(irg); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); int i, n, n_states; arch_register_t **stateregs = NEW_ARR_F(arch_register_t*, 0); /* Collect caller save registers */ - n = arch_env_get_n_reg_class(arch_env); + n = arch_env->n_register_classes; for (i = 0; i < n; ++i) { unsigned j; - const arch_register_class_t *cls = arch_env_get_reg_class(arch_env, i); + const arch_register_class_t *cls = &arch_env->register_classes[i]; for (j = 0; j < cls->n_regs; ++j) { const arch_register_t *reg = arch_register_for_index(cls, j); - if (arch_register_type_is(reg, state)) { + if (reg->type & arch_register_type_state) { ARR_APP1(arch_register_t*, stateregs, (arch_register_t *)reg); } } @@ -2127,7 +1973,7 @@ static ir_entity *create_trampoline(be_main_env_t *be, ir_entity *method) */ static ir_entity *get_trampoline(be_main_env_t *env, ir_entity *method) { - ir_entity *result = pmap_get(env->ent_trampoline_map, method); + ir_entity *result = (ir_entity*)pmap_get(env->ent_trampoline_map, method); if (result == NULL) { result = create_trampoline(env, method); pmap_insert(env->ent_trampoline_map, method, result); @@ -2152,7 +1998,7 @@ static ir_entity *create_pic_symbol(be_main_env_t *be, ir_entity *entity) static ir_entity *get_pic_symbol(be_main_env_t *env, ir_entity *entity) { - ir_entity *result = pmap_get(env->ent_pic_symbol_map, entity); + ir_entity *result = (ir_entity*)pmap_get(env->ent_pic_symbol_map, entity); if (result == NULL) { result = create_pic_symbol(env, entity); pmap_insert(env->ent_pic_symbol_map, entity, result); @@ -2172,19 +2018,27 @@ static int can_address_relative(ir_entity *entity) && !(get_entity_linkage(entity) & IR_LINKAGE_MERGE); } +static ir_node *get_pic_base(ir_graph *irg) +{ + const arch_env_t *arch_env = be_get_irg_arch_env(irg); + if (arch_env->impl->get_pic_base == NULL) + return NULL; + return arch_env->impl->get_pic_base(irg); +} + /** patches SymConsts to work in position independent code */ static void fix_pic_symconsts(ir_node *node, void *data) { - ir_graph *irg; - ir_node *pic_base; - ir_node *add; - ir_node *block; - ir_mode *mode; - ir_node *load; - ir_node *load_res; - be_abi_irg_t *env = data; - int arity, i; - be_main_env_t *be = env->birg->main_env; + ir_graph *irg = get_irn_irg(node); + be_main_env_t *be = be_get_irg_main_env(irg); + ir_node *pic_base; + ir_node *add; + ir_node *block; + ir_mode *mode; + ir_node *load; + ir_node *load_res; + int arity, i; + (void) data; arity = get_irn_arity(node); for (i = 0; i < arity; ++i) { @@ -2199,7 +2053,6 @@ static void fix_pic_symconsts(ir_node *node, void *data) entity = get_SymConst_entity(pred); block = get_nodes_block(pred); - irg = get_irn_irg(pred); /* calls can jump to relative addresses, so we can directly jump to the (relatively) known call address or the trampoline */ @@ -2213,14 +2066,14 @@ static void fix_pic_symconsts(ir_node *node, void *data) dbgi = get_irn_dbg_info(pred); trampoline = get_trampoline(be, entity); trampoline_const = new_rd_SymConst_addr_ent(dbgi, irg, mode_P_code, - trampoline, NULL); + trampoline); set_irn_n(node, i, trampoline_const); continue; } /* everything else is accessed relative to EIP */ mode = get_irn_mode(pred); - pic_base = arch_code_generator_get_pic_base(env->birg->cg); + pic_base = get_pic_base(irg); /* all ok now for locally constructed stuff */ if (can_address_relative(entity)) { @@ -2236,84 +2089,71 @@ static void fix_pic_symconsts(ir_node *node, void *data) dbgi = get_irn_dbg_info(pred); pic_symbol = get_pic_symbol(be, entity); pic_symconst = new_rd_SymConst_addr_ent(dbgi, irg, mode_P_code, - pic_symbol, NULL); + pic_symbol); add = new_r_Add(block, pic_base, pic_symconst, mode); mark_irn_visited(add); /* we need an extra indirection for global data outside our current module. The loads are always safe and can therefore float and need no memory input */ - load = new_r_Load(block, new_NoMem(), add, mode, cons_floats); + load = new_r_Load(block, new_r_NoMem(irg), add, mode, cons_floats); load_res = new_r_Proj(load, mode, pn_Load_res); set_irn_n(node, i, load_res); } } -be_abi_irg_t *be_abi_introduce(be_irg_t *birg) +void be_abi_introduce(ir_graph *irg) { - be_abi_irg_t *env = XMALLOC(be_abi_irg_t); - ir_node *old_frame = get_irg_frame(birg->irg); - ir_graph *irg = birg->irg; - struct obstack *obst = be_get_birg_obst(irg); - - pmap_entry *ent; - ir_node *dummy; - unsigned *limited_bitset; - arch_register_req_t *sp_req; - - be_omit_fp = birg->main_env->options->omit_fp; - be_omit_leaf_fp = birg->main_env->options->omit_leaf_fp; + be_abi_irg_t *env = XMALLOCZ(be_abi_irg_t); + ir_node *old_frame = get_irg_frame(irg); + be_options_t *options = be_get_irg_options(irg); + const arch_env_t *arch_env = be_get_irg_arch_env(irg); + ir_entity *entity = get_irg_entity(irg); + ir_type *method_type = get_entity_type(entity); + be_irg_t *birg = be_birg_from_irg(irg); + struct obstack *obst = &birg->obst; + ir_node *dummy = new_r_Dummy(irg, + arch_env->sp->reg_class->mode); + unsigned r; + + /* determine allocatable registers */ + assert(birg->allocatable_regs == NULL); + birg->allocatable_regs = rbitset_obstack_alloc(obst, arch_env->n_registers); + for (r = 0; r < arch_env->n_registers; ++r) { + const arch_register_t *reg = &arch_env->registers[r]; + if ( !(reg->type & arch_register_type_ignore)) { + rbitset_set(birg->allocatable_regs, r); + } + } - obstack_init(obst); + /* break here if backend provides a custom API. + * Note: we shouldn't have to setup any be_abi_irg_t* stuff at all, + * but need more cleanup to make this work + */ + be_set_irg_abi(irg, env); - env->arch_env = birg->main_env->arch_env; - env->method_type = get_entity_type(get_irg_entity(irg)); - env->call = be_abi_call_new(env->arch_env->sp->reg_class); - arch_env_get_call_abi(env->arch_env, env->method_type, env->call); + be_omit_fp = options->omit_fp; - env->ignore_regs = pset_new_ptr_default(); env->keep_map = pmap_create(); - env->dce_survivor = new_survive_dce(); - env->birg = birg; - env->irg = irg; - - sp_req = OALLOCZ(obst, arch_register_req_t); - env->sp_req = sp_req; - - sp_req->type = arch_register_req_type_limited - | arch_register_req_type_produces_sp; - sp_req->cls = arch_register_get_class(env->arch_env->sp); - - limited_bitset = rbitset_obstack_alloc(obst, sp_req->cls->n_regs); - rbitset_set(limited_bitset, arch_register_get_index(env->arch_env->sp)); - sp_req->limited = limited_bitset; - if (env->arch_env->sp->type & arch_register_type_ignore) { - sp_req->type |= arch_register_req_type_ignore; - } - - env->init_sp = dummy = new_r_Dummy(irg, env->arch_env->sp->reg_class->mode); + env->call = be_abi_call_new(arch_env->sp->reg_class); + arch_env_get_call_abi(arch_env, method_type, env->call); - env->calls = NEW_ARR_F(ir_node*, 0); + env->init_sp = dummy; + env->calls = NEW_ARR_F(ir_node*, 0); - if (birg->main_env->options->pic) { + if (options->pic) { irg_walk_graph(irg, fix_pic_symconsts, NULL, env); } /* Lower all call nodes in the IRG. */ - process_calls(env); - - /* - Beware: init backend abi call object after processing calls, - otherwise some information might be not yet available. - */ - env->cb = env->call->cb->init(env->call, birg->main_env->arch_env, irg); + process_calls(irg); /* Process the IRG */ - modify_irg(env); + modify_irg(irg); /* fix call inputs for state registers */ - fix_call_state_inputs(env); + fix_call_state_inputs(irg); /* We don't need the keep map anymore. */ pmap_destroy(env->keep_map); @@ -2327,347 +2167,64 @@ be_abi_irg_t *be_abi_introduce(be_irg_t *birg) exchange(dummy, env->init_sp); exchange(old_frame, get_irg_frame(irg)); - /* Make some important node pointers survive the dead node elimination. */ - survive_dce_register_irn(env->dce_survivor, &env->init_sp); - foreach_pmap(env->regs, ent) { - survive_dce_register_irn(env->dce_survivor, (ir_node **) &ent->value); - } - - env->call->cb->done(env->cb); - env->cb = NULL; - return env; -} - -void be_abi_free(be_abi_irg_t *env) -{ - be_abi_call_free(env->call); - free_survive_dce(env->dce_survivor); - del_pset(env->ignore_regs); pmap_destroy(env->regs); - free(env); -} - -void be_abi_put_ignore_regs(be_abi_irg_t *abi, const arch_register_class_t *cls, bitset_t *bs) -{ - arch_register_t *reg; - - for (reg = pset_first(abi->ignore_regs); reg; reg = pset_next(abi->ignore_regs)) - if (reg->reg_class == cls) - bitset_set(bs, reg->index); -} - -void be_abi_set_non_ignore_regs(be_abi_irg_t *abi, const arch_register_class_t *cls, unsigned *raw_bitset) -{ - unsigned i; - arch_register_t *reg; - - for (i = 0; i < cls->n_regs; ++i) { - if (arch_register_type_is(&cls->regs[i], ignore)) - continue; - - rbitset_set(raw_bitset, i); - } - - for (reg = pset_first(abi->ignore_regs); reg != NULL; - reg = pset_next(abi->ignore_regs)) { - if (reg->reg_class != cls) - continue; - - rbitset_clear(raw_bitset, reg->index); - } -} - -/* Returns the stack layout from a abi environment. */ -const be_stack_layout_t *be_abi_get_stack_layout(const be_abi_irg_t *abi) -{ - return &abi->frame; -} - -/* - - _____ _ ____ _ _ - | ___(_)_ __ / ___|| |_ __ _ ___| | __ - | |_ | \ \/ / \___ \| __/ _` |/ __| |/ / - | _| | |> < ___) | || (_| | (__| < - |_| |_/_/\_\ |____/ \__\__,_|\___|_|\_\ - -*/ - -typedef ir_node **node_array; - -typedef struct fix_stack_walker_env_t { - node_array sp_nodes; -} fix_stack_walker_env_t; - -/** - * Walker. Collect all stack modifying nodes. - */ -static void collect_stack_nodes_walker(ir_node *node, void *data) -{ - ir_node *insn = node; - fix_stack_walker_env_t *env = data; - const arch_register_req_t *req; - - if (is_Proj(node)) { - insn = get_Proj_pred(node); - } - - if (arch_irn_get_n_outs(insn) == 0) - return; - - req = arch_get_register_req_out(node); - if (! (req->type & arch_register_req_type_produces_sp)) - return; - - ARR_APP1(ir_node*, env->sp_nodes, node); + env->regs = NULL; } -void be_abi_fix_stack_nodes(be_abi_irg_t *env) +void be_abi_free(ir_graph *irg) { - be_ssa_construction_env_t senv; - int i, len; - ir_node **phis; - be_irg_t *birg = env->birg; - be_lv_t *lv = be_get_birg_liveness(birg); - fix_stack_walker_env_t walker_env; - - walker_env.sp_nodes = NEW_ARR_F(ir_node*, 0); - - irg_walk_graph(birg->irg, collect_stack_nodes_walker, NULL, &walker_env); - - /* nothing to be done if we didn't find any node, in fact we mustn't - * continue, as for endless loops incsp might have had no users and is bad - * now. - */ - len = ARR_LEN(walker_env.sp_nodes); - if (len == 0) { - DEL_ARR_F(walker_env.sp_nodes); - return; - } + be_abi_irg_t *env = be_get_irg_abi(irg); - be_ssa_construction_init(&senv, birg); - be_ssa_construction_add_copies(&senv, walker_env.sp_nodes, - ARR_LEN(walker_env.sp_nodes)); - be_ssa_construction_fix_users_array(&senv, walker_env.sp_nodes, - ARR_LEN(walker_env.sp_nodes)); - - if (lv != NULL) { - len = ARR_LEN(walker_env.sp_nodes); - for (i = 0; i < len; ++i) { - be_liveness_update(lv, walker_env.sp_nodes[i]); - } - be_ssa_construction_update_liveness_phis(&senv, lv); - } - - phis = be_ssa_construction_get_new_phis(&senv); - - /* set register requirements for stack phis */ - len = ARR_LEN(phis); - for (i = 0; i < len; ++i) { - ir_node *phi = phis[i]; - be_set_phi_reg_req(phi, env->sp_req); - arch_set_irn_register(phi, env->arch_env->sp); - } - be_ssa_construction_destroy(&senv); + if (env->call != NULL) + be_abi_call_free(env->call); + free(env); + assert(env->regs == NULL); - DEL_ARR_F(walker_env.sp_nodes); + be_set_irg_abi(irg, NULL); } -/** - * Fix all stack accessing operations in the block bl. - * - * @param env the abi environment - * @param bl the block to process - * @param real_bias the bias value - * - * @return the bias at the end of this block - */ -static int process_stack_bias(be_abi_irg_t *env, ir_node *bl, int real_bias) +void be_put_allocatable_regs(const ir_graph *irg, + const arch_register_class_t *cls, bitset_t *bs) { - int omit_fp = env->call->flags.bits.try_omit_fp; - ir_node *irn; - int wanted_bias = real_bias; - - sched_foreach(bl, irn) { - int ofs; - - /* - Check, if the node relates to an entity on the stack frame. - If so, set the true offset (including the bias) for that - node. - */ - ir_entity *ent = arch_get_frame_entity(irn); - if (ent != NULL) { - int bias = omit_fp ? real_bias : 0; - int offset = get_stack_entity_offset(&env->frame, ent, bias); - arch_set_frame_offset(irn, offset); - DBG((dbg, LEVEL_2, "%F has offset %d (including bias %d)\n", - ent, offset, bias)); - } + be_irg_t *birg = be_birg_from_irg(irg); + unsigned *allocatable_regs = birg->allocatable_regs; + unsigned i; - /* - * If the node modifies the stack pointer by a constant offset, - * record that in the bias. - */ - ofs = arch_get_sp_bias(irn); - - if (be_is_IncSP(irn)) { - /* fill in real stack frame size */ - if (ofs == BE_STACK_FRAME_SIZE_EXPAND) { - ir_type *frame_type = get_irg_frame_type(env->birg->irg); - ofs = (int) get_type_size_bytes(frame_type); - be_set_IncSP_offset(irn, ofs); - } else if (ofs == BE_STACK_FRAME_SIZE_SHRINK) { - ir_type *frame_type = get_irg_frame_type(env->birg->irg); - ofs = - (int)get_type_size_bytes(frame_type); - be_set_IncSP_offset(irn, ofs); - } else { - if (be_get_IncSP_align(irn)) { - /* patch IncSP to produce an aligned stack pointer */ - ir_type *between_type = env->frame.between_type; - int between_size = get_type_size_bytes(between_type); - int alignment = 1 << env->arch_env->stack_alignment; - int delta = (real_bias + ofs + between_size) & (alignment - 1); - assert(ofs >= 0); - if (delta > 0) { - be_set_IncSP_offset(irn, ofs + alignment - delta); - real_bias += alignment - delta; - } - } else { - /* adjust so real_bias corresponds with wanted_bias */ - int delta = wanted_bias - real_bias; - assert(delta <= 0); - if (delta != 0) { - be_set_IncSP_offset(irn, ofs + delta); - real_bias += delta; - } - } - } - } - - real_bias += ofs; - wanted_bias += ofs; + assert(bitset_size(bs) == cls->n_regs); + bitset_clear_all(bs); + for (i = 0; i < cls->n_regs; ++i) { + const arch_register_t *reg = &cls->regs[i]; + if (rbitset_is_set(allocatable_regs, reg->global_index)) + bitset_set(bs, i); } - - assert(real_bias == wanted_bias); - return real_bias; } -/** - * A helper struct for the bias walker. - */ -struct bias_walk { - be_abi_irg_t *env; /**< The ABI irg environment. */ - int start_block_bias; /**< The bias at the end of the start block. */ - int between_size; - ir_node *start_block; /**< The start block of the current graph. */ -}; - -/** - * Block-Walker: fix all stack offsets for all blocks - * except the start block - */ -static void stack_bias_walker(ir_node *bl, void *data) +unsigned be_get_n_allocatable_regs(const ir_graph *irg, + const arch_register_class_t *cls) { - struct bias_walk *bw = data; - if (bl != bw->start_block) { - process_stack_bias(bw->env, bl, bw->start_block_bias); - } + bitset_t *bs = bitset_alloca(cls->n_regs); + be_put_allocatable_regs(irg, cls, bs); + return bitset_popcount(bs); } -/** - * Walker: finally lower all Sels of outer frame or parameter - * entities. - */ -static void lower_outer_frame_sels(ir_node *sel, void *ctx) +void be_set_allocatable_regs(const ir_graph *irg, + const arch_register_class_t *cls, + unsigned *raw_bitset) { - be_abi_irg_t *env = ctx; - ir_node *ptr; - ir_entity *ent; - ir_type *owner; - - if (! is_Sel(sel)) - return; - - ent = get_Sel_entity(sel); - owner = get_entity_owner(ent); - ptr = get_Sel_ptr(sel); + be_irg_t *birg = be_birg_from_irg(irg); + unsigned *allocatable_regs = birg->allocatable_regs; + unsigned i; - if (owner == env->frame.frame_type || owner == env->frame.arg_type) { - /* found access to outer frame or arguments */ - int offset = get_stack_entity_offset(&env->frame, ent, 0); - - if (offset != 0) { - ir_node *bl = get_nodes_block(sel); - dbg_info *dbgi = get_irn_dbg_info(sel); - ir_mode *mode = get_irn_mode(sel); - ir_mode *mode_UInt = get_reference_mode_unsigned_eq(mode); - ir_node *cnst = new_r_Const_long(current_ir_graph, mode_UInt, offset); - - ptr = new_rd_Add(dbgi, bl, ptr, cnst, mode); - } - exchange(sel, ptr); - } -} - -void be_abi_fix_stack_bias(be_abi_irg_t *env) -{ - ir_graph *irg = env->birg->irg; - ir_type *frame_tp; - int i; - struct bias_walk bw; - - stack_frame_compute_initial_offset(&env->frame); - // stack_layout_dump(stdout, frame); - - /* Determine the stack bias at the end of the start block. */ - bw.start_block_bias = process_stack_bias(env, get_irg_start_block(irg), env->frame.initial_bias); - bw.between_size = get_type_size_bytes(env->frame.between_type); - - /* fix the bias is all other blocks */ - bw.env = env; - bw.start_block = get_irg_start_block(irg); - irg_block_walk_graph(irg, stack_bias_walker, NULL, &bw); - - /* fix now inner functions: these still have Sel node to outer - frame and parameter entities */ - frame_tp = get_irg_frame_type(irg); - for (i = get_class_n_members(frame_tp) - 1; i >= 0; --i) { - ir_entity *ent = get_class_member(frame_tp, i); - ir_graph *irg = get_entity_irg(ent); - - if (irg != NULL) { - irg_walk_graph(irg, NULL, lower_outer_frame_sels, env); - } + rbitset_clear_all(raw_bitset, cls->n_regs); + for (i = 0; i < cls->n_regs; ++i) { + const arch_register_t *reg = &cls->regs[i]; + if (rbitset_is_set(allocatable_regs, reg->global_index)) + rbitset_set(raw_bitset, i); } } -ir_node *be_abi_get_callee_save_irn(be_abi_irg_t *abi, const arch_register_t *reg) -{ - assert(arch_register_type_is(reg, callee_save)); - assert(pmap_contains(abi->regs, (void *) reg)); - return pmap_get(abi->regs, (void *) reg); -} - -ir_node *be_abi_get_ignore_irn(be_abi_irg_t *abi, const arch_register_t *reg) -{ - assert(arch_register_type_is(reg, ignore)); - assert(pmap_contains(abi->regs, (void *) reg)); - return pmap_get(abi->regs, (void *) reg); -} - -/** - * Returns non-zero if the ABI has omitted the frame pointer in - * the current graph. - */ -int be_abi_omit_fp(const be_abi_irg_t *abi) -{ - return abi->call->flags.bits.try_omit_fp; -} - +BE_REGISTER_MODULE_CONSTRUCTOR(be_init_abi); void be_init_abi(void) { FIRM_DBG_REGISTER(dbg, "firm.be.abi"); } - -BE_REGISTER_MODULE_CONSTRUCTOR(be_init_abi);