#include "irgmod.h"
#include "irgwalk.h"
#include "irprintf_t.h"
+#include "irgopt.h"
#include "be.h"
#include "beabi.h"
#include "bearch.h"
#include "benode_t.h"
+#include "belive_t.h"
#include "besched_t.h"
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#define MIN(x, y) ((x) < (y) ? (x) : (y))
typedef struct _be_abi_call_arg_t {
- unsigned is_res : 1;
- unsigned in_reg : 1;
+ unsigned is_res : 1;
+ unsigned in_reg : 1;
+ unsigned on_stack : 1;
int pos;
const arch_register_t *reg;
struct _be_abi_call_t {
be_abi_call_flags_t flags;
+ const be_abi_callbacks_t *cb;
type *between_type;
set *params;
};
int start_block_bias; /**< The stack bias at the end of the start block. */
+ void *cb; /**< ABI Callback self pointer. */
+
arch_irn_handler_t irn_handler;
arch_irn_ops_t irn_ops;
};
be_abi_call_arg_t arg;
unsigned hash;
+ memset(&arg, 0, sizeof(arg));
arg.is_res = is_res;
arg.pos = pos;
return get_or_set_call_arg(call, is_res, pos, 0);
}
-void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, ir_type *between_type)
+void be_abi_call_set_flags(be_abi_call_t *call, be_abi_call_flags_t flags, const be_abi_callbacks_t *cb)
{
- call->flags = flags;
- call->between_type = between_type;
+ call->flags = flags;
+ call->cb = cb;
}
void be_abi_call_param_stack(be_abi_call_t *call, int arg_pos)
{
be_abi_call_arg_t *arg = get_or_set_call_arg(call, 0, arg_pos, 1);
+ arg->on_stack = 1;
}
void be_abi_call_param_reg(be_abi_call_t *call, int arg_pos, const arch_register_t *reg)
arg->reg = reg;
}
+be_abi_call_flags_t be_abi_call_get_flags(const be_abi_call_t *call)
+{
+ return call->flags;
+}
+
be_abi_call_t *be_abi_call_new(void)
{
be_abi_call_t *call = malloc(sizeof(call[0]));
- call->flags.val = 0;
- call->params = new_set(cmp_call_arg, 16);
+ call->flags.val = 0;
+ call->params = new_set(cmp_call_arg, 16);
+ call->cb = NULL;
return call;
}
*/
static void lower_frame_sels_walker(ir_node *irn, void *data)
{
- const arch_register_class_t *cls;
- be_abi_irg_t *env = data;
- const arch_isa_t *isa = env->birg->main_env->arch_env->isa;
- ir_graph *irg = get_irn_irg(irn);
- ir_node *frame = get_irg_frame(irg);
ir_node *nw = NULL;
- opcode opc = get_irn_opcode(irn);
-
- if(opc == iro_Load) {
- ir_node *bl = get_nodes_block(irn);
- ir_node *sel = get_Load_ptr(irn);
- entity *ent = get_sel_ent(sel);
- cls = arch_isa_get_reg_class_for_mode(isa, get_Load_mode(irn));
- if(ent != NULL)
- nw = be_new_FrameLoad(isa->sp->reg_class, cls, irg, bl, get_Load_mem(irn), frame, ent);
- }
+ entity *ent = get_sel_ent(irn);
- else if(opc == iro_Store) {
- ir_node *bl = get_nodes_block(irn);
- ir_node *val = get_Store_value(irn);
- ir_node *sel = get_Store_ptr(irn);
- entity *ent = get_sel_ent(sel);
- cls = arch_isa_get_reg_class_for_mode(isa, get_irn_mode(val));
- if(ent != NULL)
- nw = be_new_FrameStore(isa->sp->reg_class, cls, irg, bl, get_Store_mem(irn), frame, val, ent);
- }
+ if(ent != NULL) {
+ be_abi_irg_t *env = data;
+ ir_node *bl = get_nodes_block(irn);
+ ir_graph *irg = get_irn_irg(bl);
+ ir_node *frame = get_irg_frame(irg);
- else {
- entity *ent = get_sel_ent(irn);
- if(ent != NULL) {
- ir_node *bl = get_nodes_block(irn);
- nw = be_new_FrameAddr(isa->sp->reg_class, irg, bl, frame, ent);
- }
+ nw = be_new_FrameAddr(env->isa->sp->reg_class, irg, bl, frame, ent);
}
if(nw != NULL)
for(i = 0; i < n_params; ++i) {
be_abi_call_arg_t *arg = get_call_arg(call, 0, i);
assert(arg);
- if(!arg->in_reg) {
+ if(arg->on_stack) {
stack_size += get_type_size_bytes(get_method_param_type(mt, i));
obstack_int_grow(obst, i);
n_pos++;
if(proj > curr_res_proj)
curr_res_proj = proj;
- if(arg->in_reg)
+ if(arg->in_reg) {
pset_remove_ptr(caller_save, arg->reg);
+ //pmap_insert(arg_regs, arg->reg, INT_TO_PTR(proj + 1))
+ }
}
}
}
int index = low_args[i];
be_abi_call_arg_t *arg = get_call_arg(call, 0, index);
assert(arg->reg != NULL);
- be_set_constr_single_reg(low_call, index, arg->reg);
+
+#if 0
+ if(pmap_contains(arg_regs, (void *) arg->reg)) {
+ int out_proj_num = PTR_TO_INT(be_abi_reg_map_get(arg_regs, arg->reg)) - 1;
+ be_node_set_must_be_same(low_call, out_proj_num, low_args[i]);
+ }
+
+ else
+#endif
+ be_set_constr_single_reg(low_call, index, arg->reg);
}
/* Set the register constraints of the results. */
static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp)
{
if(get_Alloc_where(alloc) == stack_alloc) {
+ ir_node *bl = get_nodes_block(alloc);
+ ir_graph *irg = get_irn_irg(bl);
+ ir_node *alloc_mem = NULL;
+ ir_node *alloc_res = NULL;
+
+ const ir_edge_t *edge;
ir_node *new_alloc;
- ir_node *bl = get_nodes_block(alloc);
- ir_graph *irg = get_irn_irg(bl);
+ env->call->flags.bits.try_omit_fp = 0;
+
+ new_alloc = be_new_AddSP(env->isa->sp, irg, bl, curr_sp, get_Alloc_size(alloc));
- new_alloc = be_new_Alloca(env->isa->sp, irg, bl, get_Alloc_mem(alloc), curr_sp, get_Alloc_size(alloc));
- exchange(alloc, new_alloc);
- curr_sp = new_r_Proj(irg, bl, new_alloc, mode_P, pn_Alloc_res);
+ foreach_out_edge(alloc, edge) {
+ ir_node *irn = get_edge_src_irn(edge);
+
+ assert(is_Proj(irn));
+ switch(get_Proj_proj(irn)) {
+ case pn_Alloc_M:
+ alloc_mem = irn;
+ break;
+ case pn_Alloc_res:
+ alloc_res = irn;
+ break;
+ default:
+ break;
+ }
+ }
+
+ assert(alloc_res != NULL);
+ exchange(alloc_res, env->isa->stack_dir < 0 ? new_alloc : curr_sp);
+
+ if(alloc_mem != NULL)
+ exchange(alloc_mem, new_r_NoMem(irg));
+
+ curr_sp = new_alloc;
}
return curr_sp;
static void link_calls_in_block_walker(ir_node *irn, void *data)
{
if(is_Call(irn)) {
- ir_node *bl = get_nodes_block(irn);
- void *save = get_irn_link(bl);
+ be_abi_irg_t *env = data;
+ ir_node *bl = get_nodes_block(irn);
+ void *save = get_irn_link(bl);
+
+ env->call->flags.bits.irg_is_leaf = 0;
set_irn_link(irn, save);
set_irn_link(bl, irn);
{
ir_graph *irg = env->birg->irg;
- irg_walk_graph(irg, firm_clear_link, link_calls_in_block_walker, NULL);
+ env->call->flags.bits.irg_is_leaf = 1;
+ irg_walk_graph(irg, firm_clear_link, link_calls_in_block_walker, env);
irg_block_walk_graph(irg, NULL, process_calls_in_block, env);
}
-#if 0
-/**
- * Walker to implement alloca-style allocations.
- * They are implemented using an add to the stack pointer
- * and a copy instruction.
- */
-static void implement_stack_alloc(be_abi_irg_t *env, ir_node *irn)
-{
- const arch_isa_t *isa = env->birg->main_env->arch_env->isa;
- ir_node *bl = get_nodes_block(irn);
- ir_node *res = env->init_sp;
- ir_node *size;
-
- assert(get_irn_opcode(irn) == iro_Alloc && get_Alloc_where(irn) == stack_alloc);
-
- size = get_Alloc_size(irn);
- if(isa->stack_dir > 0)
- res = be_new_Copy(isa->sp->reg_class, env->birg->irg, bl, res);
-
- res = be_new_AddSP(isa->sp, env->birg->irg, bl, res, size);
-
- if(isa->stack_dir < 0)
- res = be_new_Copy(isa->sp->reg_class, env->birg->irg, bl, res);
-
-}
-#endif
-
static void collect_return_walker(ir_node *irn, void *data)
{
if(get_irn_opcode(irn) == iro_Return) {
return frame;
}
-static void clearup_frame(be_abi_irg_t *env, ir_node *ret, struct obstack *obst)
+static void clearup_frame(be_abi_irg_t *env, ir_node *ret, pmap *reg_map, struct obstack *obst)
{
const arch_isa_t *isa = env->birg->main_env->arch_env->isa;
const arch_register_t *sp = isa->sp;
ir_node *irn = ent->value;
if(reg == sp)
- irn = stack;
+ obstack_ptr_grow(&env->obst, stack);
else if(reg == bp)
- irn = frame;
-
- obstack_ptr_grow(obst, irn);
+ obstack_ptr_grow(&env->obst, frame);
+ else if(arch_register_type_is(reg, callee_save) || arch_register_type_is(reg, ignore))
+ obstack_ptr_grow(obst, irn);
}
}
type *param_type = get_method_param_type(method_type, curr);
be_abi_call_arg_t *arg = get_call_arg(call, 0, curr);
- if(!arg->in_reg) {
+ if(arg->on_stack) {
snprintf(buf, sizeof(buf), "param_%d", i);
arg->stack_ent = new_entity(res, new_id_from_str(buf), param_type);
set_entity_offset_bytes(arg->stack_ent, ofs);
return res;
}
+static void create_register_perms(const arch_isa_t *isa, ir_graph *irg, ir_node *bl, pmap *regs)
+{
+ int i, j, n;
+ struct obstack obst;
+
+ obstack_init(&obst);
+
+ /* Create a Perm after the RegParams node to delimit it. */
+ for(i = 0, n = arch_isa_get_n_reg_class(isa); i < n; ++i) {
+ const arch_register_class_t *cls = arch_isa_get_reg_class(isa, i);
+ ir_node *perm;
+ ir_node **in;
+ int n_regs;
+
+ for(n_regs = 0, j = 0; j < cls->n_regs; ++j) {
+ const arch_register_t *reg = &cls->regs[j];
+ ir_node *irn = pmap_get(regs, (void *) reg);
+
+ if(irn && !arch_register_type_is(reg, ignore)) {
+ n_regs++;
+ obstack_ptr_grow(&obst, irn);
+ set_irn_link(irn, (void *) reg);
+ }
+ }
+
+ obstack_ptr_grow(&obst, NULL);
+ in = obstack_finish(&obst);
+ if(n_regs > 0) {
+ perm = be_new_Perm(cls, irg, bl, n_regs, in);
+ for(j = 0; j < n_regs; ++j) {
+ ir_node *arg = in[j];
+ arch_register_t *reg = get_irn_link(arg);
+ pmap_insert(regs, reg, arg);
+ be_set_constr_single_reg(perm, BE_OUT_POS(j), reg);
+ }
+ }
+ obstack_free(&obst, in);
+ }
+
+ obstack_free(&obst, NULL);
+}
+
+typedef struct {
+ const arch_register_t *reg;
+ ir_node *irn;
+} reg_node_map_t;
+
+static int cmp_regs(const void *a, const void *b)
+{
+ const reg_node_map_t *p = a;
+ const reg_node_map_t *q = 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;
+}
+
+static reg_node_map_t *reg_map_to_arr(struct obstack *obst, pmap *reg_map)
+{
+ pmap_entry *ent;
+ int n = pmap_count(reg_map);
+ int i = 0;
+ reg_node_map_t *res = obstack_alloc(obst, n * sizeof(res[0]));
+
+ pmap_foreach(reg_map, ent) {
+ res[i].reg = ent->key;
+ res[i].irn = ent->value;
+ i++;
+ }
+
+ qsort(res, n, sizeof(res[0]), cmp_regs);
+ return res;
+}
+
+static void create_barrier(be_abi_irg_t *env, ir_node *bl, ir_node **mem, pmap *regs, int in_req)
+{
+ ir_graph *irg = env->birg->irg;
+ int i, n;
+ int n_regs = pmap_count(regs);
+ ir_node *irn;
+ ir_node **in;
+ reg_node_map_t *rm;
+
+ rm = reg_map_to_arr(&env->obst, regs);
+
+ for(i = 0, n = 0; i < n_regs; ++i, ++n)
+ obstack_ptr_grow(&env->obst, rm[i].irn);
+
+ if(mem) {
+ obstack_ptr_grow(&env->obst, *mem);
+ n++;
+ }
+
+ in = (ir_node **) obstack_finish(&env->obst);
+ irn = be_new_Barrier(env->birg->irg, bl, n, in);
+ obstack_free(&env->obst, in);
+
+ for(n = 0; n < n_regs; ++n) {
+ int pos = BE_OUT_POS(n);
+ ir_node *proj;
+ const arch_register_t *reg = rm[n].reg;
+
+ proj = new_r_Proj(env->birg->irg, bl, irn, get_irn_mode(rm[i].irn), n);
+ be_node_set_reg_class(irn, n, reg->reg_class);
+ if(in_req)
+ be_set_constr_single_reg(irn, n, reg);
+ be_set_constr_single_reg(irn, pos, reg);
+ be_node_set_reg_class(irn, pos, reg->reg_class);
+ arch_set_irn_register(env->birg->main_env->arch_env, proj, reg);
+ if(arch_register_type_is(reg, ignore))
+ be_node_set_flags(irn, pos, arch_irn_flags_ignore);
+
+ pmap_insert(regs, (void *) reg, proj);
+ }
+
+ if(mem) {
+ *mem = new_r_Proj(env->birg->irg, bl, irn, mode_M, n);
+ }
+
+ obstack_free(&env->obst, rm);
+}
+
/**
* Modify the irg itself and the frame type.
*/
static void modify_irg(be_abi_irg_t *env)
{
firm_dbg_module_t *dbg = env->dbg;
- be_abi_call_t *call = be_abi_call_new();
+ be_abi_call_t *call = env->call;
const arch_isa_t *isa = env->birg->main_env->arch_env->isa;
const arch_register_t *sp = arch_isa_sp(isa);
ir_graph *irg = env->birg->irg;
ir_node *end = get_irg_end_block(irg);
ir_node *arg_tuple = get_irg_args(irg);
ir_node *no_mem = get_irg_no_mem(irg);
+ ir_node *mem = get_irg_initial_mem(irg);
type *method_type = get_entity_type(get_irg_entity(irg));
+ pset *dont_save = pset_new_ptr(8);
+ pmap *reg_proj_map = pmap_create();
int n_params = get_method_n_params(method_type);
int max_arg = 0;
- int reg_params_nr = 0;
int arg_offset = 0;
int i, j, n;
+ reg_node_map_t *rm;
+ const arch_register_t *fp_reg;
ir_node *frame_pointer;
ir_node *reg_params_bl;
- ir_node **args, **args_repl;
+ ir_node **args;
const ir_edge_t *edge;
- ir_type *arg_type;
+ ir_type *arg_type, *bet_type;
pmap_entry *ent;
+ bitset_t *used_proj_nr;
DBG((dbg, LEVEL_1, "introducing abi on %+F\n", irg));
int nr = get_Proj_proj(irn);
max_arg = MAX(max_arg, nr);
}
- max_arg += 1;
- args = obstack_alloc(&env->obst, max_arg * sizeof(args[0]));
- args_repl = obstack_alloc(&env->obst, max_arg * sizeof(args[0]));
+ max_arg = MAX(max_arg + 1, n_params);
+ args = obstack_alloc(&env->obst, max_arg * sizeof(args[0]));
memset(args, 0, max_arg * sizeof(args[0]));
- memset(args_repl, 0, max_arg * sizeof(args[0]));
+ used_proj_nr = bitset_alloca(1024);
/* Fill the argument vector */
foreach_out_edge(arg_tuple, edge) {
DBG((dbg, LEVEL_2, "\treading arg: %d -> %+F\n", nr, irn));
}
- /* Get the ABI constraints from the ISA */
- arch_isa_get_call_abi(isa, method_type, call);
-
- arg_type = compute_arg_type(env, call, method_type);
- stack_frame_init(env->frame, arg_type, call->between_type, get_irg_frame_type(irg), isa->stack_dir);
+ arg_type = compute_arg_type(env, call, method_type);
+ bet_type = call->cb->get_between_type(env->cb);
+ stack_frame_init(env->frame, arg_type, bet_type, get_irg_frame_type(irg), isa->stack_dir);
/* 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);
- if(arg->in_reg) {
+ if(arg->in_reg && args[i]) {
assert(arg->reg != sp && "cannot use stack pointer as parameter register");
- pmap_insert(env->regs, (void *) arg->reg, NULL);
+ assert(i == get_Proj_proj(args[i]));
+
+ /* For now, associate the register with the old Proj from Start representing that argument. */
+ pmap_insert(env->regs, (void *) arg->reg, args[i]);
+ bitset_set(used_proj_nr, i);
DBG((dbg, LEVEL_2, "\targ #%d -> reg %s\n", i, arg->reg->name));
}
}
const arch_register_class_t *cls = arch_isa_get_reg_class(isa, 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))
+ if(arch_register_type_is(reg, callee_save) || arch_register_type_is(reg, ignore))
pmap_insert(env->regs, (void *) reg, NULL);
}
}
pmap_insert(env->regs, (void *) sp, NULL);
pmap_insert(env->regs, (void *) isa->bp, NULL);
- reg_params_nr = 0;
reg_params_bl = get_irg_start_block(irg);
env->reg_params = be_new_RegParams(irg, reg_params_bl, pmap_count(env->regs));
/*
* 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.
*/
- for(ent = pmap_first(env->regs); ent; ent = pmap_next(env->regs)) {
- arch_register_t *reg = ent->key;
- int pos = -(reg_params_nr + 1);
- ent->value = new_r_Proj(irg, reg_params_bl, env->reg_params, reg->reg_class->mode, reg_params_nr);
+
+ rm = reg_map_to_arr(&env->obst, env->regs);
+ for(i = 0, n = pmap_count(env->regs); i < n; ++i) {
+ arch_register_t *reg = (void *) rm[i].reg;
+ ir_node *arg_proj = rm[i].irn;
+ ir_node *proj;
+ ir_mode *mode = arg_proj ? get_irn_mode(arg_proj) : reg->reg_class->mode;
+ long nr = i;
+ int pos = BE_OUT_POS((int) nr);
+
+ assert(nr >= 0);
+ bitset_set(used_proj_nr, nr);
+ proj = new_r_Proj(irg, reg_params_bl, env->reg_params, mode, nr);
+ pmap_insert(env->regs, (void *) reg, proj);
be_set_constr_single_reg(env->reg_params, pos, reg);
- arch_set_irn_register(env->birg->main_env->arch_env, ent->value, reg);
+ arch_set_irn_register(env->birg->main_env->arch_env, proj, reg);
/*
* If the register is an ignore register,
if(arch_register_type_is(reg, ignore))
be_node_set_flags(env->reg_params, pos, arch_irn_flags_ignore);
- reg_params_nr++;
-
- DBG((dbg, LEVEL_2, "\tregister save proj #%d -> reg %s\n", reg_params_nr - 1, reg->name));
+ DBG((dbg, LEVEL_2, "\tregister save proj #%d -> reg %s\n", nr, reg->name));
}
+ obstack_free(&env->obst, rm);
+
+ /* Generate the Prologue */
+ fp_reg = call->cb->prologue(env->cb, &mem, env->regs);
+ create_barrier(env, bl, &mem, env->regs, 0);
- /* Insert the code to set up the stack frame */
- frame_pointer = setup_frame(env);
+ env->init_sp = be_abi_reg_map_get(env->regs, sp);
+ env->init_sp = be_new_IncSP(sp, irg, bl, env->init_sp, no_mem, BE_STACK_FRAME_SIZE, be_stack_dir_along);
+ arch_set_irn_register(env->birg->main_env->arch_env, env->init_sp, sp);
+ be_abi_reg_map_set(env->regs, sp, env->init_sp);
+ frame_pointer = be_abi_reg_map_get(env->regs, sp);
+ set_irg_frame(irg, frame_pointer);
/* Now, introduce stack param nodes for all parameters passed on the stack */
for(i = 0; i < max_arg; ++i) {
ir_node *arg_proj = args[i];
+ ir_node *repl = NULL;
+
if(arg_proj != NULL) {
be_abi_call_arg_t *arg;
ir_type *param_type;
param_type = get_method_param_type(method_type, nr);
if(arg->in_reg) {
- args_repl[i] = new_r_Proj(irg, reg_params_bl, env->reg_params, get_irn_mode(arg_proj), reg_params_nr);
- be_set_constr_single_reg(env->reg_params, -(reg_params_nr + 1), arg->reg);
- reg_params_nr++;
+ repl = pmap_get(env->regs, (void *) arg->reg);
}
- /* when the (stack) parameter is primitive, we insert a StackParam
- node representing the load of that parameter */
- else {
-
+ else if(arg->on_stack) {
/* For atomic parameters which are actually used, we create a StackParam node. */
if(is_atomic_type(param_type) && get_irn_n_edges(args[i]) > 0) {
ir_mode *mode = get_type_mode(param_type);
const arch_register_class_t *cls = arch_isa_get_reg_class_for_mode(isa, mode);
- args_repl[i] = be_new_StackParam(cls, isa->bp->reg_class, irg, reg_params_bl, mode, frame_pointer, arg->stack_ent);
+ repl = be_new_StackParam(cls, isa->bp->reg_class, irg, reg_params_bl, mode, frame_pointer, arg->stack_ent);
}
/* The stack parameter is not primitive (it is a struct or array),
we thus will create a node representing the parameter's address
on the stack. */
else {
- args_repl[i] = be_new_FrameAddr(sp->reg_class, irg, reg_params_bl, frame_pointer, arg->stack_ent);
+ repl = be_new_FrameAddr(sp->reg_class, irg, reg_params_bl, frame_pointer, arg->stack_ent);
}
}
- }
- }
- /* reroute the edges from the original argument projs to the RegParam ones. */
- for(i = 0; i < max_arg; ++i) {
- if(args[i] != NULL) {
- assert(args_repl[i] != NULL);
- edges_reroute(args[i], args_repl[i], irg);
+ assert(repl != NULL);
+ edges_reroute(args[i], repl, irg);
}
}
ir_node *irn = get_irn_n(end, i);
if(get_irn_opcode(irn) == iro_Return) {
- ir_node *bl = get_nodes_block(irn);
- int n_res = get_Return_n_ress(irn);
- pmap *reg_map = pmap_create_ex(n_res);
+ ir_node *bl = get_nodes_block(irn);
+ int n_res = get_Return_n_ress(irn);
+ pmap *reg_map = pmap_create();
+ ir_node *mem = get_Return_mem(irn);
+ int in_max;
ir_node *ret;
int i, n;
ir_node **in;
+ const arch_register_t **regs;
+
+ pmap_insert(reg_map, (void *) sp, pmap_get(env->regs, (void *) sp));
- /* collect all arguments of the return */
- obstack_ptr_grow(&env->obst, get_Return_mem(irn));
+ /* 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);
-
assert(arg->in_reg && "return value must be passed in register");
- pmap_insert(reg_map, res, (void *) arg->reg);
- obstack_ptr_grow(&env->obst, res);
+ pmap_insert(reg_map, (void *) arg->reg, res);
+ }
+
+ /* Add uses of the callee save registers. */
+ pmap_foreach(env->regs, ent) {
+ const arch_register_t *reg = ent->key;
+ if(arch_register_type_is(reg, callee_save) || arch_register_type_is(reg, ignore))
+ pmap_insert(reg_map, ent->key, ent->value);
+ }
+
+ /* Make the Epilogue node and call the arch's epilogue maker. */
+ create_barrier(env, 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
+ */
+ in_max = pmap_count(reg_map) + get_Return_n_ress(irn) + 2;
+
+ in = obstack_alloc(&env->obst, in_max * sizeof(in[0]));
+ regs = obstack_alloc(&env->obst, in_max * sizeof(regs[0]));
+
+ in[0] = mem;
+ in[1] = be_abi_reg_map_get(reg_map, sp);
+ regs[0] = NULL;
+ regs[1] = sp;
+ n = 2;
+
+ /* clear SP entry, since it has already been grown. */
+ pmap_insert(reg_map, (void *) sp, NULL);
+ 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);
+
+ in[n] = be_abi_reg_map_get(reg_map, arg->reg);
+ regs[n++] = arg->reg;
+
+ /* Clear the map entry to mark the register as processed. */
+ be_abi_reg_map_set(reg_map, arg->reg, NULL);
}
- /* generate the clean up code and add additional parameters to the return. */
- clearup_frame(env, irn, &env->obst);
+ /* grow the rest of the stuff. */
+ pmap_foreach(reg_map, ent) {
+ if(ent->value) {
+ in[n] = ent->value;
+ regs[n++] = ent->key;
+ }
+ }
/* The in array for the new back end return is now ready. */
- n = obstack_object_size(&env->obst) / sizeof(in[0]);
- in = obstack_finish(&env->obst);
ret = be_new_Return(irg, bl, n, in);
- /* Set the constraints for some arguments of the return. */
- for(i = 0; i < n; i++) {
- const arch_register_t *reg = pmap_get(reg_map, in[i]);
- if(reg != NULL)
- be_set_constr_single_reg(ret, i, reg);
- }
- exchange(irn, ret);
+ /* Set the register classes of the return's parameter accordingly. */
+ for(i = 0; i < n; ++i)
+ if(regs[i])
+ be_node_set_reg_class(ret, i, regs[i]->reg_class);
+
+ /* Free the space of the Epilog's in array and the register <-> proj map. */
obstack_free(&env->obst, in);
+ exchange(irn, ret);
pmap_destroy(reg_map);
}
}
obstack_free(&env->obst, args);
- be_abi_call_free(call);
}
/**
be_abi_irg_t *be_abi_introduce(be_irg_t *birg)
{
- pmap_entry *ent;
- be_abi_irg_t *env = malloc(sizeof(env[0]));
+ be_abi_irg_t *env = xmalloc(sizeof(env[0]));
+ ir_node *old_frame = get_irg_frame(birg->irg);
+ ir_graph *irg = birg->irg;
+ pmap_entry *ent;
ir_node *dummy;
env->isa = birg->main_env->arch_env->isa;
- env->method_type = get_entity_type(get_irg_entity(birg->irg));
+ env->method_type = get_entity_type(get_irg_entity(irg));
env->call = be_abi_call_new();
arch_isa_get_call_abi(env->isa, env->method_type, env->call);
env->birg = birg;
env->dbg = firm_dbg_register("firm.be.abi");
env->stack_phis = pset_new_ptr(16);
- env->init_sp = dummy = new_r_Unknown(birg->irg, env->isa->sp->reg_class->mode);
+ env->init_sp = dummy = new_r_Unknown(irg, env->isa->sp->reg_class->mode);
+
+ env->cb = env->call->cb->init(env->call, env->isa, irg);
obstack_init(&env->obst);
modify_irg(env);
/* reroute the stack origin of the calls to the true stack origin. */
- exchange(dummy, env->init_sp);
+ edges_reroute(dummy, env->init_sp, irg);
+ edges_reroute(old_frame, get_irg_frame(irg), irg);
/* Make some important node pointers survive the dead node elimination. */
survive_dce_register_irn(env->dce_survivor, &env->init_sp);
-
pmap_foreach(env->regs, ent)
survive_dce_register_irn(env->dce_survivor, (ir_node **) &ent->value);
arch_env_push_irn_handler(env->birg->main_env->arch_env, &env->irn_handler);
+ env->call->cb->done(env->cb);
+ be_liveness(irg);
return env;
}
{
pset *s = data;
- if((is_Proj(irn) && be_is_Alloca(get_Proj_pred(irn)) && get_Proj_proj(irn) == pn_Alloc_res)
- || be_is_IncSP(irn)
- || be_is_SetSP(irn))
+ if(be_is_AddSP(irn) || be_is_IncSP(irn) || be_is_SetSP(irn))
pset_insert_ptr(s, irn);
}
be_ssa_constr_set_phis(df, stack_nodes, env->stack_phis);
del_pset(stack_nodes);
+ /* Liveness could have changed due to Phi nodes. */
+ be_liveness(env->birg->irg);
+
/* free these dominance frontiers */
be_free_dominance_frontiers(df);
}
static const void *abi_get_irn_ops(const arch_irn_handler_t *handler, const ir_node *irn)
{
const be_abi_irg_t *abi = get_abi_from_handler(handler);
- return is_Phi(irn) && pset_find_ptr(abi->stack_phis, (void *) irn) != NULL ? &abi->irn_ops : NULL;
+ const void *res = NULL;
+
+ if(is_Phi(irn) && pset_find_ptr(abi->stack_phis, (void *) irn))
+ res = &abi->irn_ops;
+
+ return res;
}
static void be_abi_limited(void *data, bitset_t *bs)
be_abi_irg_t *abi = get_abi_from_ops(self);
const arch_register_t *reg = abi->isa->sp;
- req->cls = reg->reg_class;
- req->type = arch_register_req_type_limited;
- req->limited = be_abi_limited;
- req->limited_env = abi;
+ memset(req, 0, sizeof(req[0]));
+
+ if(pos == BE_OUT_POS(0)) {
+ req->cls = reg->reg_class;
+ req->type = arch_register_req_type_limited;
+ req->limited = be_abi_limited;
+ req->limited_env = abi;
+ }
+
+ else if(pos >= 0 && pos < get_irn_arity(irn)) {
+ req->cls = reg->reg_class;
+ req->type = arch_register_req_type_normal;
+ }
+
return req;
}
projects / libfirm / blobdiff