/*
- * 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.
*
* @version $Id$
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include "lowering.h"
#include "irprog_t.h"
#include "iroptimize.h"
#include "array_t.h"
#include "pmap.h"
-#include "xmalloc.h"
#include "error.h"
/** A type map for def_find_pointer_type. */
* Default implementation for finding a pointer type for a given element type.
* Simple create a new one.
*/
-static ir_type *def_find_pointer_type(ir_type *e_type, ir_mode *mode, int alignment)
+static ir_type *def_find_pointer_type(ir_type *e_type, ir_mode *mode,
+ int alignment)
{
- ir_type *res;
- pmap_entry *e;
-
/* Mode and alignment are always identical in all calls to def_find_pointer_type(), so
we simply can use a map from the element type to the pointer type. */
- e = pmap_find(type_map, e_type);
- if (e)
- res = e->value;
- else {
- res = new_type_pointer(mangle_u(get_type_ident(e_type), new_id_from_chars("Ptr", 3)), e_type, mode);
+ ir_type *res = (ir_type*)pmap_get(type_map, e_type);
+ if (res == NULL || get_type_mode(res) != mode) {
+ res = new_type_pointer(e_type);
+ set_type_mode(res, mode);
set_type_alignment_bytes(res, alignment);
pmap_insert(type_map, e_type, res);
}
*/
static ir_type *create_modified_mtd_type(const lower_params_t *lp, ir_type *mtp)
{
- ir_type *lowered, *ptr_tp;
+ ir_type *lowered, *ptr_tp, *value_type;
ir_type **params, **results, *res_tp;
+ size_t *param_map;
ir_mode *modes[MAX_REGISTER_RET_VAL];
- int n_ress, n_params, nn_ress, nn_params, i, first_variadic;
- ident *id;
+ size_t n_ress, n_params, nn_ress, nn_params, i;
add_hidden hidden_params;
int changed = 0;
- variadicity var;
+ ir_variadicity var;
if (is_lowered_type(mtp)) {
/* the type is already lowered. Not handled yet. */
}
lowered = get_associated_type(mtp);
- if (lowered)
+ if (lowered != NULL)
return lowered;
n_ress = get_method_n_ress(mtp);
n_params = get_method_n_params(mtp);
NEW_ARR_A(ir_type *, params, n_params + n_ress);
- first_variadic = get_method_first_variadic_param_index(mtp);
+ NEW_ARR_A(size_t, param_map, n_params + n_ress);
hidden_params = lp->hidden_params;
if (hidden_params == ADD_HIDDEN_SMART &&
/* this compound will be allocated on callers stack and its
address will be transmitted as a hidden parameter. */
ptr_tp = lp->find_pointer_type(res_tp, get_modeP_data(), lp->def_ptr_alignment);
- params[nn_params++] = ptr_tp;
+ params[nn_params] = ptr_tp;
+ param_map[nn_params] = n_params + i;
+ ++nn_params;
changed++;
if (lp->flags & LF_RETURN_HIDDEN)
results[nn_ress++] = ptr_tp;
}
- }
- else
+ } else {
+ /* scalar result */
results[nn_ress++] = res_tp;
+ }
}
- /* move the index of the first variadic parameter */
- first_variadic += nn_params;
-
- for (i = 0; i < n_params; ++i)
- params[nn_params++] = get_method_param_type(mtp, i);
- }
- else {
+ for (i = 0; i < n_params; ++i, ++nn_params) {
+ params[nn_params] = get_method_param_type(mtp, i);
+ param_map[nn_params] = i;
+ }
+ } else {
/* add hidden parameters last */
assert(get_method_variadicity(mtp) == variadicity_non_variadic &&
"Cannot add hidden parameters at end of variadic function");
- for (nn_params = 0; nn_params < n_params; ++nn_params)
- params[nn_params] = get_method_param_type(mtp, nn_params);
+ for (nn_params = 0; nn_params < n_params; ++nn_params) {
+ params[nn_params] = get_method_param_type(mtp, nn_params);
+ param_map[nn_params] = nn_params;
+ }
for (nn_ress = i = 0; i < n_ress; ++i) {
res_tp = get_method_res_type(mtp, i);
- if (is_compound_type(res_tp))
- params[nn_params++] = lp->find_pointer_type(res_tp, get_modeP_data(), lp->def_ptr_alignment);
- else
+ if (is_compound_type(res_tp)) {
+ params[nn_params] = lp->find_pointer_type(res_tp, get_modeP_data(), lp->def_ptr_alignment);
+ param_map[nn_params] = n_params + i;
+ ++nn_params;
+ } else {
results[nn_ress++] = res_tp;
+ }
}
}
/* create the new type */
- id = mangle_u(new_id_from_chars("L", 1), get_type_ident(mtp));
- lowered = new_d_type_method(id, nn_params, nn_ress, get_type_dbg_info(mtp));
+ lowered = new_d_type_method(nn_params, nn_ress, get_type_dbg_info(mtp));
/* fill it */
for (i = 0; i < nn_params; ++i)
var = get_method_variadicity(mtp);
set_method_variadicity(lowered, var);
- if (var == variadicity_variadic)
- set_method_first_variadic_param_index(lowered, first_variadic);
/* associate the lowered type with the original one for easier access */
- if(changed) {
+ if (changed) {
set_method_calling_convention(lowered, get_method_calling_convention(mtp) | cc_compound_ret);
}
+
set_lowered_type(mtp, lowered);
+ value_type = get_method_value_param_type(mtp);
+ if (value_type != NULL) {
+ /* set new param positions */
+ for (i = 0; i < nn_params; ++i) {
+ ir_entity *ent = get_method_value_param_ent(lowered, i);
+ size_t pos = param_map[i];
+ ident *id;
+
+ set_entity_link(ent, INT_TO_PTR(pos));
+ if (pos >= n_params) {
+ /* formally return value, ignore for now */
+ continue;
+ }
+
+ id = get_method_param_ident(mtp, pos);
+ if (id != NULL) {
+ set_method_param_ident(lowered, i, id);
+ set_entity_ident(ent, id);
+ }
+ }
+
+ set_lowered_type(value_type, get_method_value_param_type(lowered));
+ }
+
return lowered;
}
/**
* Walker environment for fix_args_and_collect_calls().
*/
-typedef struct _wlk_env_t {
- int arg_shift; /**< The Argument index shift for parameters. */
- int first_hidden; /**< The index of the first hidden argument. */
+typedef struct wlk_env_t {
+ size_t arg_shift; /**< The Argument index shift for parameters. */
+ size_t first_hidden; /**< The index of the first hidden argument. */
struct obstack obst; /**< An obstack to allocate the data on. */
cl_entry *cl_list; /**< The call list. */
pmap *dummy_map; /**< A map for finding the dummy arguments. */
unsigned dnr; /**< The dummy index number. */
const lower_params_t *params; /**< Lowering parameters. */
+ ir_type *lowered_mtp; /**< The lowered method type of the current irg if any. */
+ ir_type *value_params; /**< The value params type if any. */
unsigned only_local_mem:1; /**< Set if only local memory access was found. */
unsigned changed:1; /**< Set if the current graph was changed. */
} wlk_env;
* @param call A Call node.
* @param env The environment.
*/
-static cl_entry *get_Call_entry(ir_node *call, wlk_env *env) {
- cl_entry *res = get_irn_link(call);
+static cl_entry *get_Call_entry(ir_node *call, wlk_env *env)
+{
+ cl_entry *res = (cl_entry*)get_irn_link(call);
if (res == NULL) {
- cl_entry *res = obstack_alloc(&env->obst, sizeof(*res));
+ cl_entry *res = OALLOC(&env->obst, cl_entry);
res->next = env->cl_list;
res->call = call;
res->copyb = NULL;
* @param adr the address
* @param pEnt points to the base entity if any
*/
-static ir_node *find_base_adr(ir_node *ptr, ir_entity **pEnt) {
+static ir_node *find_base_adr(ir_node *ptr, ir_entity **pEnt)
+{
ir_entity *ent = NULL;
assert(mode_is_reference(get_irn_mode(ptr)));
/**
* Check if a given pointer represents non-local memory.
*/
-static void check_ptr(ir_node *ptr, wlk_env *env) {
+static void check_ptr(ir_node *ptr, wlk_env *env)
+{
ir_storage_class_class_t sc;
ir_entity *ent;
/* still alias free */
ptr = find_base_adr(ptr, &ent);
- sc = classify_pointer(current_ir_graph, ptr, ent);
+ sc = get_base_sc(classify_pointer(ptr, ent));
if (sc != ir_sc_localvar && sc != ir_sc_malloced) {
/* non-local memory access */
env->only_local_mem = 0;
* If a non-alias free memory access is found, reset the alias free
* flag.
*/
-static void fix_args_and_collect_calls(ir_node *n, void *ctx) {
- wlk_env *env = ctx;
- int i;
+static void fix_args_and_collect_calls(ir_node *n, void *ctx)
+{
+ wlk_env *env = (wlk_env*)ctx;
ir_type *ctp;
ir_node *ptr;
switch (get_irn_opcode(n)) {
+ case iro_Sel:
+ if (env->lowered_mtp != NULL && env->value_params != NULL) {
+ ir_entity *ent = get_Sel_entity(n);
+
+ if (get_entity_owner(ent) == env->value_params) {
+ size_t pos = get_struct_member_index(env->value_params, ent) + env->arg_shift;
+ ir_entity *new_ent;
+
+ new_ent = get_method_value_param_ent(env->lowered_mtp, pos);
+ set_entity_ident(new_ent, get_entity_ident(ent));
+ set_Sel_entity(n, new_ent);
+ }
+ }
+ break;
case iro_Load:
case iro_Store:
if (env->only_local_mem) {
ctp = get_Call_type(n);
if (env->params->flags & LF_COMPOUND_RETURN) {
/* check for compound returns */
- for (i = get_method_n_ress(ctp) -1; i >= 0; --i) {
+ size_t i, n_res;
+ for (i = 0, n_res = get_method_n_ress(ctp); i < n_res; ++i) {
if (is_compound_type(get_method_res_type(ctp, i))) {
/*
* This is a call with a compound return. As the result
* Post walker: fixes all entities addresses for the copy-return
* optimization.
*
- * Note: We expect the length of the cr_pair array (ie number of compound
+ * Note: We expect the length of the cr_pair array (i.e. number of compound
* return values) to be 1 (C, C++) in almost all cases, so ignore the
* linear search complexity here.
*/
-static void do_copy_return_opt(ir_node *n, void *ctx) {
- cr_pair *arr = ctx;
- int i;
-
+static void do_copy_return_opt(ir_node *n, void *ctx)
+{
if (is_Sel(n)) {
ir_entity *ent = get_Sel_entity(n);
+ cr_pair *arr = (cr_pair*)ctx;
+ size_t i, l;
- for (i = ARR_LEN(arr) - 1; i >= 0; --i) {
+ for (i = 0, l = ARR_LEN(arr); i < l; ++i) {
if (ent == arr[i].ent) {
exchange(n, arr[i].arg);
break;
/* use a map the check if we already create such an entity */
e = pmap_find(env->dummy_map, tp);
if (e)
- ent = e->value;
+ ent = (ir_entity*)e->value;
else {
ir_type *ft = get_irg_frame_type(irg);
char buf[16];
}
}
return new_r_simpleSel(
- irg,
block,
get_irg_no_mem(irg),
get_irg_frame(irg),
* @param entry the call list
* @param env the environment
*/
-static void add_hidden_param(ir_graph *irg, int n_com, ir_node **ins, cl_entry *entry, wlk_env *env)
+static void add_hidden_param(ir_graph *irg, size_t n_com, ir_node **ins, cl_entry *entry, wlk_env *env)
{
ir_node *p, *n, *src, *mem, *blk;
ir_entity *ent;
ir_type *owner;
- int idx, n_args;
+ size_t n_args;
n_args = 0;
for (p = entry->copyb; p; p = n) {
- n = get_irn_link(p);
+ size_t idx;
+ n = (ir_node*)get_irn_link(p);
src = get_CopyB_src(p);
/* old scheme using value_res_ent */
/* get rid of the CopyB */
turn_into_tuple(p, pn_CopyB_max);
- set_Tuple_pred(p, pn_CopyB_M_regular, mem);
- set_Tuple_pred(p, pn_CopyB_M_except, get_irg_bad(irg));
- set_Tuple_pred(p, pn_CopyB_X_regular, new_r_Jmp(irg, blk));
+ set_Tuple_pred(p, pn_CopyB_M, mem);
+ set_Tuple_pred(p, pn_CopyB_X_regular, new_r_Jmp(blk));
set_Tuple_pred(p, pn_CopyB_X_except, get_irg_bad(irg));
++n_args;
}
/* now create dummy entities for function with ignored return value */
if (n_args < n_com) {
ir_type *ctp = get_Call_type(entry->call);
- int i, j;
+ size_t i;
+ size_t j;
if (is_lowered_type(ctp))
ctp = get_associated_type(ctp);
* @param irg the graph
* @param env the environment
*/
-static void fix_call_list(ir_graph *irg, wlk_env *env) {
+static void fix_call_list(ir_graph *irg, wlk_env *env)
+{
const lower_params_t *lp = env->params;
cl_entry *p;
ir_node *call, **new_in;
ir_type *ctp, *lowered_mtp;
add_hidden hidden_params;
- int i, n_params, n_com, pos;
+ size_t i, n_res, n_params, n_com, pos;
new_in = NEW_ARR_F(ir_node *, 0);
for (p = env->cl_list; p; p = p->next) {
n_params = get_Call_n_params(call);
n_com = 0;
- for (i = get_method_n_ress(ctp) - 1; i >= 0; --i) {
+ for (i = 0, n_res = get_method_n_ress(ctp); i < n_res; ++i) {
if (is_compound_type(get_method_res_type(ctp, i)))
++n_com;
}
*/
static void transform_irg(const lower_params_t *lp, ir_graph *irg)
{
- ir_graph * rem = current_ir_graph;
+ ir_graph *rem = current_ir_graph;
ir_entity *ent = get_irg_entity(irg);
ir_type *mtp, *lowered_mtp, *tp, *ft;
- int i, j, k, n_ress = 0, n_ret_com = 0, n_cr_opt;
+ size_t i, j, k, n_ress = 0, n_ret_com = 0;
+ size_t n_cr_opt;
ir_node **new_in, *ret, *endbl, *bl, *mem, *copy;
cr_pair *cr_opt;
wlk_env env;
} else {
/* we must only search for calls */
env.arg_shift = 0;
+ lowered_mtp = NULL;
}
obstack_init(&env.obst);
env.cl_list = NULL;
env.dummy_map = pmap_create_ex(8);
env.dnr = 0;
env.params = lp;
+ env.lowered_mtp = lowered_mtp;
+ env.value_params = get_method_value_param_type(mtp);
env.only_local_mem = 1;
env.changed = 0;
}
if (n_ret_com) {
+ int idx;
+
/*
* Now fix the Return node of the current graph.
*/
/* STEP 1: find the return. This is simple, we have normalized the graph. */
endbl = get_irg_end_block(irg);
ret = NULL;
- for (i = get_Block_n_cfgpreds(endbl) - 1; i >= 0; --i) {
- ir_node *pred = get_Block_cfgpred(endbl, i);
+ for (idx = get_Block_n_cfgpreds(endbl) - 1; idx >= 0; --idx) {
+ ir_node *pred = get_Block_cfgpred(endbl, idx);
if (is_Return(pred)) {
ret = pred;
if (is_compound_type(tp)) {
ir_node *arg = get_irg_args(irg);
- arg = new_r_Proj(irg, get_nodes_block(arg), arg, mode_P_data, env.first_hidden + k);
+ arg = new_r_Proj(arg, mode_P_data, env.first_hidden + k);
++k;
if (is_Unknown(pred)) {
++n_cr_opt;
} else { /* copy-return optimization is impossible, do the copy. */
copy = new_r_CopyB(
- irg, bl,
+ bl,
mem,
arg,
pred,
tp
);
- mem = new_r_Proj(irg, bl, copy, mode_M, pn_CopyB_M_regular);
+ mem = new_r_Proj(copy, mode_M, pn_CopyB_M);
}
}
if (lp->flags & LF_RETURN_HIDDEN) {
set_irn_in(ret, j, new_in);
if (n_cr_opt > 0) {
+ size_t i, n;
+
irg_walk_graph(irg, NULL, do_copy_return_opt, cr_opt);
- for (i = ARR_LEN(cr_opt) - 1; i >= 0; --i) {
- remove_class_member(ft, cr_opt[i].ent);
+ for (i = 0, n = ARR_LEN(cr_opt); i < n; ++i) {
+ free_entity(cr_opt[i].ent);
}
}
} /* if (n_ret_com) */
* @param lp lowering parameters
* @param tp The type.
*/
-static int must_be_lowered(const lower_params_t *lp, ir_type *tp) {
- int i, n_ress;
+static int must_be_lowered(const lower_params_t *lp, ir_type *tp)
+{
+ size_t i, n_ress;
ir_type *res_tp;
if (is_Method_type(tp)) {
*/
static void lower_method_types(type_or_ent tore, void *env)
{
- const lower_params_t *lp = env;
+ const lower_params_t *lp = (const lower_params_t*)env;
ir_type *tp;
/* fix method entities */
*/
void lower_calls_with_compounds(const lower_params_t *params)
{
- int i;
+ size_t i, n;
ir_graph *irg;
lower_params_t param = *params;
type_map = NULL;
/* first step: Transform all graphs */
- for (i = get_irp_n_irgs() - 1; i >= 0; --i) {
+ for (i = 0, n = get_irp_n_irgs(); i < n; ++i) {
irg = get_irp_irg(i);
- if (irg == get_const_code_irg())
- continue;
-
transform_irg(¶m, irg);
}
if (type_map)
pmap_destroy(type_map);
}
+
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