* @date 7.3.2005
* @cvsid $Id$
*/
-
#ifdef HAVE_CONFIG_H
-# include "config.h"
+# include <config.h>
#endif
#include "obst.h"
#include "height.h"
#include "pdeq.h"
#include "irtools.h"
+#include "raw_bitset.h"
#include "be.h"
#include "beabi.h"
pmap *keep_map; /**< mapping blocks to keep nodes. */
pset *ignore_regs; /**< Additional registers which shall be ignored. */
+ arch_register_req_t sp_req;
+ arch_register_req_t sp_cls_req;
+
arch_irn_handler_t irn_handler;
arch_irn_ops_t irn_ops;
DEBUG_ONLY(firm_dbg_module_t *dbg;) /**< The debugging module. */
*
* @return the new ABI call object
*/
-static be_abi_call_t *be_abi_call_new(void)
+static be_abi_call_t *be_abi_call_new(const arch_register_class_t *cls_addr)
{
be_abi_call_t *call = xmalloc(sizeof(call[0]));
call->flags.val = 0;
call->params = new_set(cmp_call_arg, 16);
call->cb = NULL;
- call->cls_addr = NULL;
+ call->cls_addr = cls_addr;
call->flags.bits.try_omit_fp = be_omit_fp;
{
ir_graph *irg = env->birg->irg;
const arch_isa_t *isa = env->birg->main_env->arch_env->isa;
- be_abi_call_t *call = be_abi_call_new();
ir_type *mt = get_Call_type(irn);
ir_node *call_ptr = get_Call_ptr(irn);
int n_params = get_method_n_params(mt);
int stack_size = 0;
int stack_dir = arch_isa_stack_dir(isa);
const arch_register_t *sp = arch_isa_sp(isa);
+ be_abi_call_t *call = be_abi_call_new(sp->reg_class);
ir_mode *mach_mode = sp->reg_class->mode;
struct obstack *obst = &env->obst;
int no_alloc = call->flags.bits.frame_is_setup_on_call;
curr_mem = get_Call_mem(irn);
}
- assert(mode_is_reference(mach_mode) && "machine mode must be pointer");
for(i = 0; i < n_pos; ++i) {
int p = pos[i];
be_abi_call_arg_t *arg = get_call_arg(call, 0, p);
/* Make the expression to compute the argument's offset. */
if(curr_ofs > 0) {
- addr = new_r_Const_long(irg, bl, mode_Is, curr_ofs);
+ ir_mode *constmode = mach_mode;
+ if(mode_is_reference(mach_mode)) {
+ constmode = mode_Is;
+ }
+ addr = new_r_Const_long(irg, bl, constmode, curr_ofs);
addr = new_r_Add(irg, bl, curr_sp, addr, mach_mode);
}
}
get_Call_type(irn));
/*
- Set the register class of the call address to the same as the stack pointer's
- if it's not set by the backend in the abi callback.
+ Set the register class of the call address to
+ the backend provided class (default: stack pointer class)
*/
- be_node_set_reg_class(low_call, be_pos_Call_ptr, call->cls_addr ? call->cls_addr : sp->reg_class);
-
- /* Set input requirement for stack pointer. */
- be_node_set_reg_class(low_call, be_pos_Call_sp, arch_get_irn_reg_class(isa->main_env->arch_env, curr_sp, -1));
+ be_node_set_reg_class(low_call, be_pos_Call_ptr, call->cls_addr);
DBG((env->dbg, LEVEL_3, "\tcreated backend call %+F\n", low_call));
/* Set the register constraints of the results. */
for (i = 0; res_projs[i]; ++i) {
- ir_node *irn = res_projs[i];
- int proj = get_Proj_proj(irn);
+ int pn = get_Proj_proj(res_projs[i]);
/* Correct Proj number since it has been adjusted! (see above) */
- const be_abi_call_arg_t *arg = get_call_arg(call, 1, proj - pn_Call_max);
+ const be_abi_call_arg_t *arg = get_call_arg(call, 1, pn - pn_Call_max);
+
+ /* Matze: we need the information about the real mode for later
+ * transforms (signed/unsigend compares, stores...), so leave the fixup
+ * for the backend transform phase... */
+#if 0
+ /* correct mode */
+ const arch_register_class_t *cls = arch_register_get_class(arg->reg);
+ ir_mode *mode = arch_register_class_mode(cls);
+ set_irn_mode(irn, mode);
+#endif
assert(arg->in_reg);
- be_set_constr_single_reg(low_call, BE_OUT_POS(proj), arg->reg);
+ be_set_constr_single_reg(low_call, BE_OUT_POS(pn), arg->reg);
}
obstack_free(obst, in);
exchange(irn, low_call);
for (i = 0; res_projs[i]; ++i)
set_Proj_pred(res_projs[i], low_call);
+ /* set the now unnecessary projT to bad */
+ if(res_proj != NULL) {
+ be_kill_node(res_proj);
+ }
+
/* Make additional projs for the caller save registers
and the Keep node which keeps them alive. */
if (pset_count(caller_save) > 0) {
*/
static ir_node *adjust_alloc(be_abi_irg_t *env, ir_node *alloc, ir_node *curr_sp, ir_node **result_copy)
{
- 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;
+ ir_node *block;
+ ir_graph *irg;
+ ir_node *alloc_mem;
+ ir_node *alloc_res;
+ ir_type *type;
- const ir_edge_t *edge;
- ir_node *new_alloc;
- ir_node *addr;
- ir_node *copy;
- ir_node *ins[2];
+ const ir_edge_t *edge;
+ ir_node *new_alloc;
+ ir_node *size;
+ ir_node *addr;
+ ir_node *copy;
+ ir_node *ins[2];
+
+ if (get_Alloc_where(alloc) != stack_alloc) {
+ assert(0);
+ return alloc;
+ }
- foreach_out_edge(alloc, edge) {
- ir_node *irn = get_edge_src_irn(edge);
+ block = get_nodes_block(alloc);
+ irg = get_irn_irg(block);
+ alloc_mem = NULL;
+ alloc_res = NULL;
+ type = get_Alloc_type(alloc);
- 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;
- }
- }
+ foreach_out_edge(alloc, edge) {
+ ir_node *irn = get_edge_src_irn(edge);
- /* Beware: currently Alloc nodes without a result might happen,
- only escape analysis kills them and this phase runs only for object
- oriented source. We kill the Alloc here. */
- if (alloc_res == NULL && alloc_mem) {
- exchange(alloc_mem, get_Alloc_mem(alloc));
- return curr_sp;
+ 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;
}
+ }
- /* The stack pointer will be modified in an unknown manner.
- We cannot omit it. */
- env->call->flags.bits.try_omit_fp = 0;
- new_alloc = be_new_AddSP(env->isa->sp, irg, bl, curr_sp, get_Alloc_size(alloc));
+ /* Beware: currently Alloc nodes without a result might happen,
+ only escape analysis kills them and this phase runs only for object
+ oriented source. We kill the Alloc here. */
+ if (alloc_res == NULL && alloc_mem) {
+ exchange(alloc_mem, get_Alloc_mem(alloc));
+ return curr_sp;
+ }
- if(alloc_mem != NULL) {
- ir_node *addsp_mem;
- ir_node *sync;
+ /* we might need to multiply the size with the element size */
+ if(type != get_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(NULL, irg, block, mode_Iu, tv);
+ ir_node *mul = new_rd_Mul(NULL, irg, block, get_Alloc_size(alloc),
+ cnst, mode_Iu);
+ size = mul;
+ } else {
+ size = get_Alloc_size(alloc);
+ }
- addsp_mem = new_r_Proj(irg, bl, new_alloc, mode_M, pn_be_AddSP_M);
+ /* The stack pointer will be modified in an unknown manner.
+ We cannot omit it. */
+ env->call->flags.bits.try_omit_fp = 0;
+ new_alloc = be_new_AddSP(env->isa->sp, irg, block, curr_sp, size);
- // We need to sync the output mem of the AddSP with the input mem
- // edge into the alloc node
- ins[0] = get_Alloc_mem(alloc);
- ins[1] = addsp_mem;
- sync = new_r_Sync(irg, bl, 2, ins);
+ if(alloc_mem != NULL) {
+ ir_node *addsp_mem;
+ ir_node *sync;
- exchange(alloc_mem, sync);
- }
+ addsp_mem = new_r_Proj(irg, block, new_alloc, mode_M, pn_be_AddSP_M);
+
+ // We need to sync the output mem of the AddSP with the input mem
+ // edge into the alloc node
+ ins[0] = get_Alloc_mem(alloc);
+ ins[1] = addsp_mem;
+ sync = new_r_Sync(irg, block, 2, ins);
- exchange(alloc, new_alloc);
+ exchange(alloc_mem, sync);
+ }
- /* fix projnum of alloca res */
- set_Proj_proj(alloc_res, pn_be_AddSP_res);
+ exchange(alloc, new_alloc);
- addr = env->isa->stack_dir < 0 ? alloc_res : curr_sp;
+ /* fix projnum of alloca res */
+ set_Proj_proj(alloc_res, pn_be_AddSP_res);
- /* copy the address away, since it could be used after further stack pointer modifications. */
- /* Let it point curr_sp just for the moment, I'll reroute it in a second. */
- *result_copy = copy = be_new_Copy(env->isa->sp->reg_class, irg, bl, curr_sp);
+ addr = env->isa->stack_dir < 0 ? alloc_res : curr_sp;
- /* Let all users of the Alloc() result now point to the copy. */
- edges_reroute(alloc_res, copy, irg);
+ /* copy the address away, since it could be used after further stack pointer modifications. */
+ /* Let it point curr_sp just for the moment, I'll reroute it in a second. */
+ *result_copy = copy = be_new_Copy(env->isa->sp->reg_class, irg, block, curr_sp);
- /* Rewire the copy appropriately. */
- set_irn_n(copy, be_pos_Copy_op, addr);
+ /* Let all users of the Alloc() result now point to the copy. */
+ edges_reroute(alloc_res, copy, irg);
+
+ /* Rewire the copy appropriately. */
+ set_irn_n(copy, be_pos_Copy_op, addr);
+
+ curr_sp = alloc_res;
- curr_sp = alloc_res;
- }
return curr_sp;
} /* adjust_alloc */
*/
static ir_node *adjust_free(be_abi_irg_t *env, ir_node *free, ir_node *curr_sp)
{
- if (get_Free_where(free) == stack_alloc) {
- ir_node *bl = get_nodes_block(free);
- ir_graph *irg = get_irn_irg(bl);
- ir_node *addsp, *mem, *res;
-
- /* The stack pointer will be modified in an unknown manner.
- We cannot omit it. */
- env->call->flags.bits.try_omit_fp = 0;
- addsp = be_new_SubSP(env->isa->sp, irg, bl, curr_sp, get_Free_size(free));
+ ir_node *block;
+ ir_graph *irg;
+ ir_node *subsp, *mem, *res, *size, *sync;
+ ir_type *type;
+ ir_node *in[2];
- mem = new_r_Proj(irg, bl, addsp, mode_M, pn_be_SubSP_M);
- res = new_r_Proj(irg, bl, addsp, mode_P_data, pn_be_SubSP_res);
+ if (get_Free_where(free) != stack_alloc) {
+ assert(0);
+ return free;
+ }
- exchange(free, mem);
- curr_sp = res;
+ block = get_nodes_block(free);
+ irg = get_irn_irg(block);
+ type = get_Free_type(free);
+
+ /* we might need to multiply the size with the element size */
+ if(type != get_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(NULL, irg, block, mode_Iu, tv);
+ ir_node *mul = new_rd_Mul(NULL, irg, block, get_Free_size(free),
+ cnst, mode_Iu);
+ size = mul;
+ } else {
+ size = get_Free_size(free);
}
+
+ /* 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->isa->sp, irg, block, curr_sp, size);
+
+ mem = new_r_Proj(irg, block, subsp, mode_M, pn_be_SubSP_M);
+ res = new_r_Proj(irg, block, subsp, mode_P_data, pn_be_SubSP_res);
+
+ /* we need to sync the memory */
+ in[0] = get_Free_mem(free);
+ in[1] = mem;
+ sync = new_r_Sync(irg, block, 2, in);
+
+ /* and make the AddSP dependent on the former memory */
+ add_irn_dep(subsp, get_Free_mem(free));
+
+ /* kill the free */
+ exchange(free, sync);
+ curr_sp = res;
+
return curr_sp;
} /* adjust_free */
*/
static int dependent_on(ir_node *n1, ir_node *n2)
{
- ir_node *bl = get_nodes_block(n1);
-
- assert(bl == get_nodes_block(n2));
+ assert(get_nodes_block(n1) == get_nodes_block(n2));
return heights_reachable_in_block(ir_heights, n1, n2);
- //return check_dependence(n1, n2, bl);
}
static int cmp_call_dependecy(const void *c1, const void *c2)
ir_node *reg_params_bl;
ir_node **args;
ir_node *arg_tuple;
+ ir_node *value_param_base;
const ir_edge_t *edge;
ir_type *arg_type, *bet_type;
lower_frame_sels_env_t ctx;
ctx.value_param_list = NULL;
irg_walk_graph(irg, lower_frame_sels_walker, NULL, &ctx);
+ /* value_param_base anchor is not needed anymore now */
+ value_param_base = get_irg_value_param_base(irg);
+ be_kill_node(value_param_base);
+ set_irg_value_param_base(irg, new_r_Bad(irg));
+
env->frame = obstack_alloc(&env->obst, sizeof(env->frame[0]));
env->regs = pmap_create();
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) || arch_register_type_is(reg, ignore))
+ if(arch_register_type_is(reg, callee_save))
pmap_insert(env->regs, (void *) reg, NULL);
}
}
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_mode *mode = arg_proj ? get_irn_mode(arg_proj) : reg->reg_class->mode;
+ ir_mode *mode = reg->reg_class->mode;
long nr = i;
int pos = BE_OUT_POS((int) nr);
int flags = 0;
/* 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_abi_reg_map_get(env->regs, sp);
env->init_sp = be_new_IncSP(sp, irg, bl, env->init_sp, BE_STACK_FRAME_SIZE_EXPAND);
be_abi_reg_map_set(env->regs, sp, env->init_sp);
env->start_barrier = barrier = create_barrier(env, bl, &mem, env->regs, 0);
- env->init_sp = be_abi_reg_map_get(env->regs, sp);
+ env->init_sp = be_abi_reg_map_get(env->regs, sp);
arch_set_irn_register(env->birg->main_env->arch_env, env->init_sp, sp);
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);
+ set_irg_initial_mem(irg, mem);
+
/* Now, introduce stack param nodes for all parameters passed on the stack */
for(i = 0; i < n_params; ++i) {
ir_node *arg_proj = args[i];
}
assert(repl != NULL);
- edges_reroute(args[i], repl, irg);
+ exchange(args[i], repl);
}
}
+ /* the arg proj is not needed anymore now */
+ assert(get_irn_n_edges(arg_tuple) == 0);
+ be_kill_node(arg_tuple);
+ set_irg_args(irg, new_rd_Bad(irg));
+
/* All Return nodes hang on the End node, so look for them there. */
for (i = 0, n = get_Block_n_cfgpreds(end); i < n; ++i) {
ir_node *irn = get_Block_cfgpred(end, i);
pmap_entry *ent;
ir_node *dummy;
optimization_state_t state;
+ unsigned *limited_bitset;
be_omit_fp = birg->main_env->options->omit_fp;
env->isa = birg->main_env->arch_env->isa;
env->method_type = get_entity_type(get_irg_entity(irg));
- env->call = be_abi_call_new();
+ env->call = be_abi_call_new(env->isa->sp->reg_class);
arch_isa_get_call_abi(env->isa, env->method_type, env->call);
env->ignore_regs = pset_new_ptr_default();
env->dce_survivor = new_survive_dce();
env->birg = birg;
env->stack_phis = pset_new_ptr(16);
+
+ env->sp_req.type = arch_register_req_type_limited;
+ env->sp_req.cls = arch_register_get_class(env->isa->sp);
+ limited_bitset = rbitset_obstack_alloc(&env->obst, env->sp_req.cls->n_regs);
+ rbitset_set(limited_bitset, arch_register_get_index(env->isa->sp));
+ env->sp_req.limited = limited_bitset;
+
+ env->sp_cls_req.type = arch_register_req_type_normal;
+ env->sp_cls_req.cls = arch_register_get_class(env->isa->sp);
+
/* Beware: later we replace this node by the real one, ensure it is not CSE'd
to another Unknown or the stack pointer gets used */
save_optimization_state(&state);
pmap_destroy(env->keep_map);
/* reroute the stack origin of the calls to the true stack origin. */
- edges_reroute(dummy, env->init_sp, irg);
- edges_reroute(old_frame, get_irg_frame(irg), irg);
+ 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);
- pmap_foreach(env->regs, ent)
+ 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);
return res;
}
-static void be_abi_limited(void *data, bitset_t *bs)
-{
- be_abi_irg_t *abi = data;
- bitset_clear_all(bs);
- bitset_set(bs, abi->isa->sp->index);
-}
-
-static const arch_register_req_t *abi_get_irn_reg_req(const void *self, arch_register_req_t *req, const ir_node *irn, int pos)
+static
+const arch_register_req_t *abi_get_irn_reg_req(const void *self,
+ const ir_node *irn, int pos)
{
- be_abi_irg_t *abi = get_abi_from_ops(self);
- const arch_register_t *reg = abi->isa->sp;
-
- memset(req, 0, sizeof(req[0]));
+ be_abi_irg_t *abi = get_abi_from_ops(self);
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 &abi->sp_req;
+ } else if(pos >= 0 && pos < get_irn_arity(irn)) {
+ return &abi->sp_cls_req;
}
- return req;
+ return arch_no_register_req;
}
static void abi_set_irn_reg(const void *self, ir_node *irn, const arch_register_t *reg)
projects / libfirm / blobdiff