* @file
* @brief Backend ABI implementation.
* @author Sebastian Hack, Michael Beck
- * @version $Id$
*/
#include "config.h"
#include "irgwalk.h"
#include "irprintf_t.h"
#include "irgopt.h"
-#include "irbitset.h"
#include "iropt_t.h"
+#include "irtools.h"
#include "heights.h"
#include "pdeq.h"
-#include "irtools.h"
+#include "util.h"
#include "raw_bitset.h"
#include "error.h"
#include "pset_new.h"
static ir_node *be_abi_reg_map_get(pmap *map, const arch_register_t *reg)
{
- return (ir_node*)pmap_get(map, reg);
+ return pmap_get(ir_node, map, reg);
}
static void be_abi_reg_map_set(pmap *map, const arch_register_t* reg,
pmap_insert(map, reg, node);
}
+/**
+ * Check if the given register is callee save, ie. will be saved by the callee.
+ */
+static bool arch_register_is_callee_save(
+ const arch_env_t *arch_env,
+ const arch_register_t *reg)
+{
+ if (arch_env->impl->register_saved_by)
+ return arch_env->impl->register_saved_by(reg, /*callee=*/1);
+ return false;
+}
+
+/**
+ * Check if the given register is caller save, ie. must be saved by the caller.
+ */
+static bool arch_register_is_caller_save(
+ const arch_env_t *arch_env,
+ const arch_register_t *reg)
+{
+ if (arch_env->impl->register_saved_by)
+ return arch_env->impl->register_saved_by(reg, /*callee=*/0);
+ return false;
+}
+
+
+
/*
_ ____ ___ ____ _ _ _ _
/ \ | __ )_ _| / ___|__ _| | | |__ __ _ ___| | _____
hash = is_res * 128 + pos;
- return (be_abi_call_arg_t*)set_find(call->params, &arg, sizeof(arg), hash);
+ return set_find(be_abi_call_arg_t, 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);
+ (void)set_insert(be_abi_call_arg_t, call->params, arg, sizeof(*arg), hash);
}
if (context & ABI_CONTEXT_CALLER) {
arg->callee = 0;
- set_insert(call->params, arg, sizeof(*arg), hash);
+ (void)set_insert(be_abi_call_arg_t, call->params, arg, sizeof(*arg), hash);
}
}
* @param args the stack argument layout type
* @param between the between layout type
* @param locals the method frame type
- * @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,
- ir_entity *param_map[])
+ ir_type *between, ir_type *locals)
{
frame->arg_type = args;
frame->between_type = between;
frame->initial_offset = 0;
frame->initial_bias = 0;
frame->order[1] = between;
- frame->param_map = param_map;
/* typical decreasing stack: locals have the
* lowest addresses, arguments the highest */
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;
- 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;
ir_node *res_proj = NULL;
int n_reg_params = 0;
ir_node **in;
ir_node **res_projs;
int n_reg_results = 0;
- const ir_edge_t *edge;
int *reg_param_idxs;
int *stack_param_idx;
- int i, n, destroy_all_regs;
+ int i, n;
+ int throws_exception;
size_t s;
size_t p;
dbg_info *dbgi;
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((size_t)get_Call_n_params(irn) == n_params);
stack_param_idx = ALLOCAN(int, n_params);
for (p = 0; p < n_params; ++p) {
be_abi_call_arg_t *arg = get_call_arg(call, 0, p, 0);
* Note: we also have to do this for stack_size == 0, because we may have
* to adjust stack alignment for the call.
*/
- if (!do_seq && !no_alloc) {
- curr_sp = be_new_IncSP(sp, bl, curr_sp, stack_size, 1);
- }
+ curr_sp = be_new_IncSP(sp, bl, curr_sp, stack_size, 1);
dbgi = get_irn_dbg_info(irn);
/* If there are some parameters which shall be passed on the stack. */
ir_node **in = ALLOCAN(ir_node*, n_stack_params+1);
unsigned n_in = 0;
- /*
- * Reverse list of stack parameters if call arguments are from left to right.
- * 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) {
- for (i = 0; i < n_stack_params >> 1; ++i) {
- int other = n_stack_params - i - 1;
- int tmp = stack_param_idx[i];
- stack_param_idx[i] = stack_param_idx[other];
- stack_param_idx[other] = tmp;
- }
- }
-
curr_mem = get_Call_mem(irn);
- if (! do_seq) {
- in[n_in++] = curr_mem;
- }
+ in[n_in++] = curr_mem;
for (i = 0; i < n_stack_params; ++i) {
int p = stack_param_idx[i];
* the stack pointer for the next must be incremented,
* and the memory value propagated.
*/
- if (do_seq) {
- curr_ofs = 0;
- addr = curr_sp = be_new_IncSP(sp, bl, curr_sp,
- param_size + arg->space_before, 0);
- add_irn_dep(curr_sp, curr_mem);
- } else {
- curr_ofs += arg->space_before;
- curr_ofs = round_up2(curr_ofs, arg->alignment);
-
- /* Make the expression to compute the argument's offset. */
- if (curr_ofs > 0) {
- ir_mode *constmode = mach_mode;
- if (mode_is_reference(mach_mode)) {
- constmode = mode_Is;
- }
- addr = new_r_Const_long(irg, constmode, curr_ofs);
- addr = new_r_Add(bl, curr_sp, addr, mach_mode);
+ curr_ofs += arg->space_before;
+ curr_ofs = round_up2(curr_ofs, arg->alignment);
+
+ /* Make the expression to compute the argument's offset. */
+ if (curr_ofs > 0) {
+ ir_mode *constmode = mach_mode;
+ if (mode_is_reference(mach_mode)) {
+ constmode = mode_Is;
}
+ addr = new_r_Const_long(irg, constmode, curr_ofs);
+ addr = new_r_Add(bl, curr_sp, addr, mach_mode);
}
/* Insert a store for primitive arguments. */
if (is_atomic_type(param_type)) {
ir_node *nomem = get_irg_no_mem(irg);
- ir_node *mem_input = do_seq ? curr_mem : nomem;
+ ir_node *mem_input = nomem;
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 {
curr_ofs += param_size;
- if (do_seq)
- curr_mem = mem;
- else
- in[n_in++] = mem;
+ in[n_in++] = mem;
}
/* We need the sync only, if we didn't build the stores sequentially. */
- if (! do_seq) {
- if (n_stack_params >= 1) {
- curr_mem = new_r_Sync(bl, n_in, in);
- } else {
- curr_mem = get_Call_mem(irn);
- }
+ if (n_stack_params >= 1) {
+ curr_mem = new_r_Sync(bl, n_in, in);
+ } else {
+ curr_mem = get_Call_mem(irn);
}
}
- /* check for the return_twice property */
- destroy_all_regs = 0;
- if (is_SymConst_addr_ent(call_ptr)) {
- ir_entity *ent = get_SymConst_entity(call_ptr);
-
- if (get_entity_additional_properties(ent) & mtp_property_returns_twice)
- destroy_all_regs = 1;
- } else {
- ir_type *call_tp = get_Call_type(irn);
-
- if (get_method_additional_properties(call_tp) & mtp_property_returns_twice)
- destroy_all_regs = 1;
- }
-
/* 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) {
* checking */
continue;
}
- if (destroy_all_regs || (reg->type & arch_register_type_caller_save)) {
+ if (arch_register_is_caller_save(arch_env, reg)) {
if (!(reg->type & arch_register_type_ignore)) {
ARR_APP1(const arch_register_t*, destroyed_regs, reg);
}
res_projs = ALLOCANZ(ir_node*, n_res);
foreach_out_edge(irn, edge) {
- const ir_edge_t *res_edge;
- ir_node *irn = get_edge_src_irn(edge);
+ ir_node *irn = get_edge_src_irn(edge);
if (!is_Proj(irn) || get_Proj_proj(irn) != pn_Call_T_result)
continue;
/* add state registers ins */
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);
- ir_node *regnode = new_r_Unknown(irg, arch_register_class_mode(cls));
+ const arch_register_class_t *cls = reg->reg_class;
+ ir_node *regnode = new_r_Unknown(irg, cls->mode);
in[n_ins++] = regnode;
}
assert(n_ins == (int) (n_reg_params + ARR_LEN(states)));
/* ins collected, build the call */
+ throws_exception = ir_throws_exception(irn);
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 + ARR_LEN(destroyed_regs),
n_ins, in, get_Call_type(irn));
}
+ ir_set_throws_exception(low_call, throws_exception);
be_Call_set_pop(low_call, call->pop);
/* put the call into the list of all calls for later processing */
/* now handle results */
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, 0);
+ long pn = i + pn_be_Call_first_res;
/* returns values on stack not supported yet */
assert(arg->in_reg);
keep = be_new_Keep(bl, n, in);
for (i = 0; i < n; ++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);
+ be_node_set_reg_class_in(keep, i, arch_register_get_class(reg));
}
}
}
if (! mem_proj) {
- mem_proj = new_r_Proj(low_call, mode_M, pn_be_Call_M_regular);
+ mem_proj = new_r_Proj(low_call, mode_M, pn_be_Call_M);
keep_alive(mem_proj);
}
}
/* Clean up the stack frame or revert alignment fixes if we allocated it */
- if (! no_alloc) {
- curr_sp = be_new_IncSP(sp, bl, curr_sp, -stack_size, 0);
- }
+ curr_sp = be_new_IncSP(sp, bl, curr_sp, -stack_size, 0);
be_abi_call_free(call);
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;
count = get_Alloc_count(alloc);
/* we might need to multiply the count with the element size */
- if (type != firm_unknown_type && get_type_size_bytes(type) != 1) {
+ if (!is_unknown_type(type) && get_type_size_bytes(type) != 1) {
ir_mode *mode = get_irn_mode(count);
ir_tarval *tv = new_tarval_from_long(get_type_size_bytes(type),
mode);
assert(get_Free_where(free) == stack_alloc);
/* we might need to multiply the size with the element size */
- if (type != firm_unknown_type && get_type_size_bytes(type) != 1) {
+ if (!is_unknown_type(type) && get_type_size_bytes(type) != 1) {
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),
+ ir_node *mul = new_rd_Mul(dbg, block, get_Free_count(free),
cnst, mode_Iu);
size = mul;
} else {
- size = get_Free_size(free);
+ size = get_Free_count(free);
}
stack_alignment = 1 << arch_env->stack_alignment;
/**
* Walker: links all Call/Alloc/Free nodes to the Block they are contained.
- * Clears the irg_is_leaf flag if a Call is detected.
*/
static void link_ops_in_block_walker(ir_node *irn, void *data)
{
ir_node *bl = get_nodes_block(irn);
void *save = get_irn_link(bl);
- if (code == iro_Call)
- env->call->flags.bits.irg_is_leaf = 0;
-
set_irn_link(irn, save);
set_irn_link(bl, irn);
}
{
be_abi_irg_t *abi = be_get_irg_abi(irg);
- 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(irg);
* Changes a possibly allocated value param type by moving
* entities to the stack layout type.
*
- * @param env the ABI environment
* @param call the current call ABI
* @param method_type the method type
- * @param val_param_tp the value parameter type, will be destroyed
- * @param param_map an array mapping method arguments to the stack layout type
*
* @return the stack argument layout type
*/
-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)
+static ir_type *compute_arg_type(ir_graph *irg, be_abi_call_t *call,
+ ir_type *method_type)
{
- int dir = env->call->flags.bits.left_to_right ? 1 : -1;
- int inc = -dir;
- int n = get_method_n_params(method_type);
- int curr = inc > 0 ? 0 : n - 1;
struct obstack *obst = be_get_be_obst(irg);
- int ofs = 0;
+ ir_type *frame_type = get_irg_frame_type(irg);
+ size_t n_params = get_method_n_params(method_type);
+ size_t n_frame_members = get_compound_n_members(frame_type);
+ ir_entity *va_start_entity = NULL;
+ size_t f;
+ int ofs = 0;
- char buf[128];
ir_type *res;
- int i;
- ident *id = get_entity_ident(get_irg_entity(irg));
- ir_entity **map;
+ size_t i;
+ ir_entity **map = OALLOCNZ(obst, ir_entity*, n_params);
+ res = new_type_struct(new_id_from_chars("arg_type", 8));
- *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, 1);
+ /* collect existing entities for value_param_types */
+ for (f = n_frame_members; f > 0; ) {
+ ir_entity *entity = get_compound_member(frame_type, --f);
+ size_t num;
- map[i] = NULL;
- if (arg->on_stack) {
- if (val_param_tp != NULL) {
- /* the entity was already created, create a copy in the param type */
- ir_entity *val_ent = get_method_value_param_ent(method_type, i);
- arg->stack_ent = copy_entity_own(val_ent, res);
- set_entity_link(val_ent, arg->stack_ent);
- set_entity_link(arg->stack_ent, NULL);
- } else {
- /* create a new entity */
- snprintf(buf, sizeof(buf), "param_%d", i);
- arg->stack_ent = new_entity(res, new_id_from_str(buf), param_type);
- }
- ofs += arg->space_before;
- ofs = round_up2(ofs, arg->alignment);
- set_entity_offset(arg->stack_ent, ofs);
- ofs += arg->space_after;
- ofs += get_type_size_bytes(param_type);
- map[i] = arg->stack_ent;
+ set_entity_link(entity, NULL);
+ if (!is_parameter_entity(entity))
+ continue;
+ num = get_entity_parameter_number(entity);
+ if (num == IR_VA_START_PARAMETER_NUMBER) {
+ /* move entity to new arg_type */
+ set_entity_owner(entity, res);
+ va_start_entity = entity;
+ continue;
+ }
+ assert(num < n_params);
+ if (map[num] != NULL)
+ panic("multiple entities for parameter %u in %+F found", f, irg);
+
+ if (num != n_params && !get_call_arg(call, 0, num, 1)->on_stack) {
+ /* don't move this entity */
+ continue;
}
+
+ map[num] = entity;
+ /* move entity to new arg_type */
+ set_entity_owner(entity, res);
+ }
+
+ for (i = 0; i < n_params; ++i) {
+ be_abi_call_arg_t *arg = get_call_arg(call, 0, i, 1);
+ ir_type *param_type = get_method_param_type(method_type, i);
+ ir_entity *entity;
+
+ if (!arg->on_stack) {
+ continue;
+ }
+ entity = map[i];
+ if (entity == NULL) {
+ /* create a new entity */
+ entity = new_parameter_entity(res, i, param_type);
+ }
+ ofs += arg->space_before;
+ ofs = round_up2(ofs, arg->alignment);
+ set_entity_offset(entity, ofs);
+ ofs += arg->space_after;
+ ofs += get_type_size_bytes(param_type);
+ arg->stack_ent = entity;
+ }
+ if (va_start_entity != NULL) {
+ set_entity_offset(va_start_entity, ofs);
}
set_type_size_bytes(res, ofs);
set_type_state(res, layout_fixed);
+
return res;
}
const arch_env_t *arch_env = be_get_irg_arch_env(irg);
dbg_info *dbgi;
pmap *reg_map = pmap_create();
- ir_node *keep = (ir_node*)pmap_get(env->keep_map, bl);
+ ir_node *keep = pmap_get(ir_node, env->keep_map, bl);
size_t in_max;
ir_node *ret;
int i, n;
/* Add uses of the callee save registers. */
foreach_pmap(env->regs, ent) {
const arch_register_t *reg = (const arch_register_t*)ent->key;
- if (reg->type & (arch_register_type_callee_save | arch_register_type_ignore))
+ if ((reg->type & arch_register_type_ignore) || arch_register_is_callee_save(arch_env, reg))
pmap_insert(reg_map, ent->key, ent->value);
}
return ret;
}
-typedef struct ent_pos_pair ent_pos_pair;
-struct ent_pos_pair {
- ir_entity *ent; /**< a value param entity */
- int pos; /**< its parameter number */
- ent_pos_pair *next; /**< for linking */
-};
-
typedef struct lower_frame_sels_env_t {
- ent_pos_pair *value_param_list; /**< the list of all value param entities */
ir_node *frame; /**< the current frame */
const arch_register_class_t *sp_class; /**< register class of the stack pointer */
const arch_register_class_t *link_class; /**< register class of the link pointer */
- ir_type *value_tp; /**< the value type if any */
ir_type *frame_tp; /**< the frame type */
int static_link_pos; /**< argument number of the hidden static link */
} lower_frame_sels_env_t;
-/**
- * Return an entity from the backend for an value param entity.
- *
- * @param ent an value param type entity
- * @param ctx context
- */
-static ir_entity *get_argument_entity(ir_entity *ent, lower_frame_sels_env_t *ctx)
-{
- 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
- * need one for backing store.
- * Create one here.
- */
- ir_type *frame_tp = ctx->frame_tp;
- unsigned offset = get_type_size_bytes(frame_tp);
- ir_type *tp = get_entity_type(ent);
- unsigned align = get_type_alignment_bytes(tp);
-
- offset += align - 1;
- offset &= ~(align - 1);
-
- argument_ent = copy_entity_own(ent, frame_tp);
-
- /* must be automatic to set a fixed layout */
- set_entity_offset(argument_ent, offset);
- offset += get_type_size_bytes(tp);
-
- set_type_size_bytes(frame_tp, offset);
- set_entity_link(ent, argument_ent);
- }
- return argument_ent;
-}
/**
* Walker: Replaces Sels of frame type and
* value param type entities by FrameAddress.
ir_entity *ent = get_Sel_entity(irn);
ir_node *bl = get_nodes_block(irn);
ir_node *nw;
- int pos = 0;
- int is_value_param = 0;
-
- if (get_entity_owner(ent) == ctx->value_tp) {
- is_value_param = 1;
-
- /* replace by its copy from the argument type */
- pos = get_struct_member_index(ctx->value_tp, ent);
- ent = get_argument_entity(ent, ctx);
- }
nw = be_new_FrameAddr(ctx->sp_class, bl, ctx->frame, ent);
exchange(irn, nw);
-
- /* check, if it's a param Sel and if have not seen this entity before */
- if (is_value_param && get_entity_link(ent) == NULL) {
- ent_pos_pair pair;
-
- pair.ent = ent;
- pair.pos = pos;
- pair.next = NULL;
- ARR_APP1(ent_pos_pair, ctx->value_param_list, pair);
- /* just a mark */
- set_entity_link(ent, ctx->value_param_list);
- }
}
}
}
-/**
- * Check if a value parameter is transmitted as a register.
- * This might happen if the address of an parameter is taken which is
- * transmitted in registers.
- *
- * Note that on some architectures this case must be handled specially
- * because the place of the backing store is determined by their ABI.
- *
- * 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, ir_graph *irg,
- ent_pos_pair *value_param_list)
-{
- 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);
-
- 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, 1);
-
- if (arg->in_reg) {
- DBG((dbg, LEVEL_2, "\targ #%d need backing store\n", pos));
- value_param_list[i].next = new_list;
- new_list = &value_param_list[i];
- }
- }
- if (new_list != NULL) {
- /* ok, change the graph */
- ir_node *start_bl = get_irg_start_block(irg);
- ir_node *first_bl = get_first_block_succ(start_bl);
- ir_node *frame, *imem, *nmem, *store, *mem, *args;
- optimization_state_t state;
- unsigned offset;
-
- assert(first_bl && first_bl != start_bl);
- /* we had already removed critical edges, so the following
- assertion should be always true. */
- assert(get_Block_n_cfgpreds(first_bl) == 1);
-
- /* now create backing stores */
- frame = get_irg_frame(irg);
- imem = get_irg_initial_mem(irg);
-
- save_optimization_state(&state);
- set_optimize(0);
- nmem = new_r_Proj(get_irg_start(irg), mode_M, pn_Start_M);
- restore_optimization_state(&state);
-
- /* reroute all edges to the new memory source */
- edges_reroute(imem, nmem);
-
- store = NULL;
- mem = imem;
- args = get_irg_args(irg);
- for (entry = new_list; entry != NULL; entry = entry->next) {
- int i = entry->pos;
- ir_type *tp = get_entity_type(entry->ent);
- ir_mode *mode = get_type_mode(tp);
- ir_node *addr;
-
- /* address for the backing store */
- 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), cons_none);
- }
- /* the new memory Proj gets the last Proj from store */
- set_Proj_pred(nmem, store);
- set_Proj_proj(nmem, pn_Store_M);
- set_nodes_block(nmem, get_nodes_block(store));
-
- /* move all entities to the frame type */
- frame_tp = get_irg_frame_type(irg);
- offset = get_type_size_bytes(frame_tp);
-
- /* we will add new entities: set the layout to undefined */
- assert(get_type_state(frame_tp) == layout_fixed);
- set_type_state(frame_tp, layout_undefined);
- 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 (get_entity_owner(ent) != frame_tp) {
- ir_type *tp = get_entity_type(ent);
- unsigned align = get_type_alignment_bytes(tp);
-
- offset += align - 1;
- offset &= ~(align - 1);
- set_entity_owner(ent, frame_tp);
- /* must be automatic to set a fixed layout */
- set_entity_offset(ent, offset);
- offset += get_type_size_bytes(tp);
- }
- }
- set_type_size_bytes(frame_tp, offset);
- /* fix the layout again */
- set_type_state(frame_tp, layout_fixed);
- }
-}
-
/**
* The start block has no jump, instead it has an initial exec Proj.
* The backend wants to handle all blocks the same way, so we replace
assert(is_Proj(initial_X));
exchange(initial_X, jmp);
set_irg_initial_exec(irg, new_r_Bad(irg, mode_X));
-}
-
-/**
- * Update the entity of Sels to the outer value parameters.
- */
-static void update_outer_frame_sels(ir_node *irn, void *env)
-{
- lower_frame_sels_env_t *ctx = (lower_frame_sels_env_t*)env;
- ir_node *ptr;
- ir_entity *ent;
- int pos = 0;
-
- if (! is_Sel(irn))
- return;
- ptr = get_Sel_ptr(irn);
- if (! is_arg_Proj(ptr))
- return;
- if (get_Proj_proj(ptr) != ctx->static_link_pos)
- return;
- ent = get_Sel_entity(irn);
-
- if (get_entity_owner(ent) == ctx->value_tp) {
- /* replace by its copy from the argument type */
- pos = get_struct_member_index(ctx->value_tp, ent);
- ent = get_argument_entity(ent, ctx);
- set_Sel_entity(irn, ent);
-
- /* check, if we have not seen this entity before */
- if (get_entity_link(ent) == NULL) {
- ent_pos_pair pair;
-
- pair.ent = ent;
- pair.pos = pos;
- pair.next = NULL;
- ARR_APP1(ent_pos_pair, ctx->value_param_list, pair);
- /* just a mark */
- set_entity_link(ent, ctx->value_param_list);
- }
- }
-}
-
-/**
- * Fix access to outer local variables.
- */
-static void fix_outer_variable_access(be_abi_irg_t *env,
- lower_frame_sels_env_t *ctx)
-{
- int i;
- ir_graph *irg;
- (void) env;
-
- for (i = get_class_n_members(ctx->frame_tp) - 1; i >= 0; --i) {
- ir_entity *ent = get_class_member(ctx->frame_tp, i);
-
- if (! is_method_entity(ent))
- continue;
- irg = get_entity_irg(ent);
- if (irg == NULL)
- continue;
-
- /*
- * FIXME: find the number of the static link parameter
- * for now we assume 0 here
- */
- ctx->static_link_pos = 0;
+ /* merge start block with successor if possible */
+ {
+ foreach_out_edge(jmp, edge) {
+ ir_node *succ = get_edge_src_irn(edge);
+ if (!is_Block(succ))
+ continue;
- irg_walk_graph(irg, NULL, update_outer_frame_sels, ctx);
+ if (get_irn_arity(succ) == 1) {
+ exchange(succ, start_block);
+ }
+ break;
+ }
}
}
ir_node *start_bl;
ir_node **args;
ir_node *arg_tuple;
- const ir_edge_t *edge;
- ir_type *arg_type, *bet_type, *tp;
+ ir_type *arg_type, *bet_type;
lower_frame_sels_env_t ctx;
- ir_entity **param_map;
DBG((dbg, LEVEL_1, "introducing abi on %+F\n", irg));
old_mem = get_irg_initial_mem(irg);
- irp_reserve_resources(irp, IR_RESOURCE_ENTITY_LINK);
-
- /* set the links of all frame entities to NULL, we use it
- to detect if an entity is already linked in the value_param_list */
- tp = get_method_value_param_type(method_type);
- ctx.value_tp = tp;
- if (tp != NULL) {
- /* clear the links of the clone type, let the
- original entities point to its clones */
- for (i = get_struct_n_members(tp) - 1; i >= 0; --i) {
- ir_entity *mem = get_struct_member(tp, i);
- set_entity_link(mem, NULL);
- }
- }
+ irp_reserve_resources(irp, IRP_RESOURCE_ENTITY_LINK);
- arg_type = compute_arg_type(env, irg, call, method_type, tp, ¶m_map);
+ arg_type = compute_arg_type(irg, call, method_type);
/* 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 = arch_env->sp->reg_class;
ctx.link_class = arch_env->link_class;
default_layout_compound_type(ctx.frame_tp);
}
- /* we will possible add new entities to the frame: set the layout to undefined */
- assert(get_type_state(ctx.frame_tp) == layout_fixed);
- set_type_state(ctx.frame_tp, layout_undefined);
-
- irg_walk_graph(irg, lower_frame_sels_walker, NULL, &ctx);
-
- /* fix the frame type layout again */
- set_type_state(ctx.frame_tp, layout_fixed);
/* align stackframe to 4 byte */
frame_size = get_type_size_bytes(ctx.frame_tp);
if (frame_size % 4 != 0) {
n_params = get_method_n_params(method_type);
args = OALLOCNZ(obst, ir_node*, n_params);
- /*
- * for inner function we must now fix access to outer frame entities.
- */
- fix_outer_variable_access(env, &ctx);
+ be_add_parameter_entity_stores(irg);
- /* Check if a value parameter is transmitted as a register.
- * This might happen if the address of an parameter is taken which is
- * transmitted in registers.
- *
- * Note that on some architectures this case must be handled specially
- * because the place of the backing store is determined by their ABI.
- *
- * 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, irg, ctx.value_param_list);
+ irg_walk_graph(irg, lower_frame_sels_walker, NULL, &ctx);
- DEL_ARR_F(ctx.value_param_list);
- irp_free_resources(irp, IR_RESOURCE_ENTITY_LINK);
+ irp_free_resources(irp, IRP_RESOURCE_ENTITY_LINK);
/* Fill the argument vector */
arg_tuple = get_irg_args(irg);
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);
+ get_irg_frame_type(irg));
/* Count the register params and add them to the number of Projs for the RegParams node */
for (i = 0; i < n_params; ++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 (reg->type & (arch_register_type_callee_save | arch_register_type_state)) {
+ if ((reg->type & arch_register_type_state) || arch_register_is_callee_save(arch_env, reg)) {
pmap_insert(env->regs, (void *) reg, NULL);
}
}
/* create a new initial memory proj */
assert(is_Proj(old_mem));
- arch_set_out_register_req(env->start, 0, arch_no_register_req);
+ arch_set_irn_register_req_out(env->start, 0, arch_no_register_req);
new_mem_proj = new_r_Proj(env->start, mode_M, 0);
mem = new_mem_proj;
set_irg_initial_mem(irg, mem);
param_type = get_method_param_type(method_type, nr);
if (arg->in_reg) {
- repl = (ir_node*)pmap_get(env->regs, arg->reg);
+ repl = pmap_get(ir_node, 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);
*/
static ir_entity *get_trampoline(be_main_env_t *env, ir_entity *method)
{
- ir_entity *result = (ir_entity*)pmap_get(env->ent_trampoline_map, method);
+ ir_entity *result = pmap_get(ir_entity, env->ent_trampoline_map, method);
if (result == NULL) {
result = create_trampoline(env, method);
pmap_insert(env->ent_trampoline_map, method, result);
static ir_entity *get_pic_symbol(be_main_env_t *env, ir_entity *entity)
{
- ir_entity *result = (ir_entity*)pmap_get(env->ent_pic_symbol_map, entity);
+ ir_entity *result = pmap_get(ir_entity, env->ent_pic_symbol_map, entity);
if (result == NULL) {
result = create_pic_symbol(env, entity);
pmap_insert(env->ent_pic_symbol_map, entity, result);
*/
static int can_address_relative(ir_entity *entity)
{
- return get_entity_visibility(entity) != ir_visibility_external
- && !(get_entity_linkage(entity) & IR_LINKAGE_MERGE);
+ return entity_has_definition(entity) && !(get_entity_linkage(entity) & IR_LINKAGE_MERGE);
}
static ir_node *get_pic_base(ir_graph *irg)
{
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_set_irg_abi(irg, env);
- be_omit_fp = options->omit_fp;
+ be_omit_fp = be_options.omit_fp;
env->keep_map = pmap_create();
env->call = be_abi_call_new(arch_env->sp->reg_class);
env->init_sp = dummy;
env->calls = NEW_ARR_F(ir_node*, 0);
- edges_assure(irg);
+ assure_edges(irg);
- if (options->pic) {
+ if (be_options.pic) {
irg_walk_graph(irg, fix_pic_symconsts, NULL, env);
}
projects / libfirm / blobdiff