/*
- * 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.
*
unsigned int lineno; /**< line number */
} loc_entry;
-typedef struct _block_id_walker_data_t {
- tarval **array; /**< the entity the holds the block counts */
+typedef struct block_id_walker_data_t {
+ ir_tarval **array; /**< the entity the holds the block counts */
unsigned int id; /**< current block id number */
ir_node *symconst; /**< the SymConst representing array */
pmap *fname_map; /**< set containing all found filenames */
unsigned flags; /**< profile flags */
} block_id_walker_data_t;
-typedef struct _execcount_t {
+typedef struct execcount_t {
unsigned long block;
unsigned int count;
} execcount_t;
/**
* Compare two execcount_t entries.
*/
-static int cmp_execcount(const void *a, const void *b, size_t size) {
- const execcount_t *ea = a;
- const execcount_t *eb = b;
+static int cmp_execcount(const void *a, const void *b, size_t size)
+{
+ const execcount_t *ea = (const execcount_t*)a;
+ const execcount_t *eb = (const execcount_t*)b;
(void) size;
return ea->block != eb->block;
}
/**
* Block walker, count number of blocks.
*/
-static void block_counter(ir_node * bb, void * data) {
- unsigned int *count = data;
+static void block_counter(ir_node * bb, void * data)
+{
+ unsigned *count = (unsigned*)data;
(void) bb;
*count = *count + 1;
}
/**
* Return the number of blocks the given graph.
*/
-static unsigned int count_blocks(ir_graph *irg) {
+static unsigned int count_blocks(ir_graph *irg)
+{
unsigned int count = 0;
irg_block_walk_graph(irg, block_counter, NULL, &count);
/**
* Instrument a block with code needed for profiling
*/
-static void
-instrument_block(ir_node *bb, ir_node *address, unsigned int id)
+static void instrument_block(ir_node *bb, ir_node *address, unsigned int id)
{
ir_graph *irg = get_irn_irg(bb);
ir_node *load, *store, *offset, *add, *projm, *proji, *unknown;
/**
* We can't instrument the end block as there are no real instructions there
*/
- if(bb == get_irg_end_block(irg))
+ if (bb == get_irg_end_block(irg))
return;
unknown = new_r_Unknown(irg, mode_M);
cnst = new_r_Const_long(irg, mode_Iu, get_mode_size_bytes(mode_Iu) * id);
- offset = new_r_Add(irg, bb, address, cnst, get_modeP_data());
- load = new_r_Load(irg, bb, unknown, offset, mode_Iu);
- projm = new_r_Proj(irg, bb, load, mode_M, pn_Load_M);
- proji = new_r_Proj(irg, bb, load, mode_Iu, pn_Load_res);
+ offset = new_r_Add(bb, address, cnst, get_modeP_data());
+ load = new_r_Load(bb, unknown, offset, mode_Iu, cons_none);
+ projm = new_r_Proj(load, mode_M, pn_Load_M);
+ proji = new_r_Proj(load, mode_Iu, pn_Load_res);
cnst = new_r_Const_long(irg, mode_Iu, 1);
- add = new_r_Add(irg, bb, proji, cnst, mode_Iu);
- store = new_r_Store(irg, bb, projm, offset, add);
- projm = new_r_Proj(irg, bb, store, mode_M, pn_Store_M);
+ add = new_r_Add(bb, proji, cnst, mode_Iu);
+ store = new_r_Store(bb, projm, offset, add, cons_none);
+ projm = new_r_Proj(store, mode_M, pn_Store_M);
set_irn_link(bb, projm);
set_irn_link(projm, load);
}
/**
* SSA Construction for instrumentation code memory
*/
-static void
-fix_ssa(ir_node * bb, void * data)
+static void fix_ssa(ir_node *bb, void *data)
{
- fix_env *env = data;
+ fix_env *env = (fix_env*)data;
ir_node *mem;
int arity = get_Block_n_cfgpreds(bb);
- /* start and end block are not instrumented, skip! */
+ /* end block are not instrumented, skip! */
if (bb == env->end_block)
return;
if (bb == get_irg_start_block(get_irn_irg(bb))) {
- mem = new_NoMem();
+ mem = get_irg_initial_mem(get_irn_irg(bb));
} else if (arity == 1) {
- mem = get_irn_link(get_Block_cfgpred_block(bb, 0));
+ mem = (ir_node*)get_irn_link(get_Block_cfgpred_block(bb, 0));
} else {
int n;
ir_node **ins;
- ir_graph *irg = current_ir_graph;
NEW_ARR_A(ir_node*, ins, arity);
for (n = arity - 1; n >= 0; --n) {
- ins[n] = get_irn_link(get_Block_cfgpred_block(bb, n));
+ ins[n] = (ir_node*)get_irn_link(get_Block_cfgpred_block(bb, n));
}
- mem = new_r_Phi(irg, bb, arity, ins, mode_M);
+ mem = new_r_Phi(bb, arity, ins, mode_M);
}
- set_Load_mem(get_irn_link(get_irn_link(bb)), mem);
+ set_Load_mem((ir_node*)get_irn_link((ir_node*)get_irn_link(bb)), mem);
}
static void add_constructor(ir_entity *method)
{
ir_type *method_type = get_entity_type(method);
- ident *id = id_unique("constructor_ptrt.%u");
- ir_type *ptr_type = new_type_pointer(id, method_type, mode_P_code);
+ ir_type *ptr_type = new_type_pointer(method_type);
ir_type *constructors = get_segment_type(IR_SEGMENT_CONSTRUCTORS);
ident *ide = id_unique("constructor_ptr.%u");
ir_entity *ptr = new_entity(constructors, ide, ptr_type);
ir_graph *irg = get_const_code_irg();
ir_node *val = new_rd_SymConst_addr_ent(NULL, irg, mode_P_code,
- method, NULL);
+ method);
set_entity_compiler_generated(ptr, 1);
- set_entity_variability(ptr, variability_constant);
+ set_entity_linkage(ptr, IR_LINKAGE_CONSTANT);
set_atomic_ent_value(ptr, val);
}
* Generates a new irg which calls the initializer
*
* Pseudocode:
- * void __firmprof_initializer(void) { __init_firmprof(ent_filename, bblock_id, bblock_counts, n_blocks); }
+ * void __firmprof_initializer(void) { __init_firmprof(ent_filename, bblock_id, bblock_counts, n_blocks); }
*/
-static ir_graph *
-gen_initializer_irg(ir_entity * ent_filename, ir_entity * bblock_id, ir_entity * bblock_counts, int n_blocks)
+static ir_graph *gen_initializer_irg(ir_entity *ent_filename, ir_entity *bblock_id, ir_entity *bblock_counts, int n_blocks)
{
- ir_node *start_block;
-
ir_node *ins[4];
ident *name = new_id_from_str("__firmprof_initializer");
- ir_entity *ent = new_entity(get_glob_type(), name, new_type_method(name, 0, 0));
+ ir_entity *ent = new_entity(get_glob_type(), name, new_type_method(0, 0));
ir_node *ret, *call, *symconst;
symconst_symbol sym;
ident *init_name = new_id_from_str("__init_firmprof");
- ir_type *init_type = new_type_method(init_name, 4, 0);
+ ir_type *init_type = new_type_method(4, 0);
ir_type *uint, *uintptr, *string;
ir_entity *init_ent;
ir_graph *irg;
set_entity_ld_ident(ent, name);
- uint = new_type_primitive(new_id_from_str("__uint"), mode_Iu);
- uintptr = new_type_pointer(new_id_from_str("__uintptr"), uint, get_modeP_data());
- string = new_type_pointer(new_id_from_str("__charptr"), new_type_primitive(new_id_from_str("__char"), mode_Bs), get_modeP_data());
+ uint = new_type_primitive(mode_Iu);
+ uintptr = new_type_pointer(uint);
+ string = new_type_pointer(new_type_primitive(mode_Bs));
set_method_param_type(init_type, 0, string);
set_method_param_type(init_type, 1, uintptr);
irg = new_ir_graph(ent, 0);
empty_frame_type = get_irg_frame_type(irg);
set_type_size_bytes(empty_frame_type, 0);
+ set_type_state(empty_frame_type, layout_fixed);
bb = get_cur_block();
- start_block = get_irg_start_block(irg);
-
sym.entity_p = init_ent;
- symconst = new_r_SymConst(irg, start_block, mode_P_data, sym, symconst_addr_ent);
+ symconst = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
sym.entity_p = ent_filename;
- ins[0] = new_r_SymConst(irg, start_block, mode_P_data, sym, symconst_addr_ent);
+ ins[0] = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
sym.entity_p = bblock_id;
- ins[1] = new_r_SymConst(irg, start_block, mode_P_data, sym, symconst_addr_ent);
+ ins[1] = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
sym.entity_p = bblock_counts;
- ins[2] = new_r_SymConst(irg, start_block, mode_P_data, sym, symconst_addr_ent);
+ ins[2] = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
ins[3] = new_r_Const_long(irg, mode_Iu, n_blocks);
- call = new_r_Call(irg, bb, get_irg_initial_mem(irg), symconst, 4, ins, init_type);
- ret = new_r_Return(irg, bb, new_r_Proj(irg, bb, call, mode_M, pn_Call_M_regular), 0, NULL);
+ call = new_r_Call(bb, get_irg_initial_mem(irg), symconst, 4, ins, init_type);
+ ret = new_r_Return(bb, new_r_Proj(call, mode_M, pn_Call_M), 0, NULL);
mature_immBlock(bb);
add_immBlock_pred(get_irg_end_block(irg), ret);
if (! entry) {
static unsigned nr = 0;
- ident *id;
- char buf[128];
- ir_type *arr;
- int i, len = strlen(fname) + 1;
- tarval **tarval_string;
-
- snprintf(buf, sizeof(buf), "firm_name_arr.%d", nr);
- arr = new_type_array(new_id_from_str(buf), 1, wd->tp_char);
+ ident *id;
+ char buf[128];
+ ir_type *arr;
+ size_t i, len = strlen(fname) + 1;
+ ir_tarval **tarval_string;
+
+ snprintf(buf, sizeof(buf), "firm_name_arr.%u", nr);
+ arr = new_type_array(1, wd->tp_char);
set_array_bounds_int(arr, 0, 0, len);
- snprintf(buf, sizeof(buf), "__firm_name.%d", nr++);
+ snprintf(buf, sizeof(buf), "__firm_name.%u", nr++);
id = new_id_from_str(buf);
ent = new_entity(get_glob_type(), id, arr);
set_entity_ld_ident(ent, id);
pmap_insert(wd->fname_map, (void *)fname, ent);
/* initialize file name string constant */
- tarval_string = ALLOCAN(tarval*, len);
+ tarval_string = ALLOCAN(ir_tarval*, len);
for (i = 0; i < len; ++i) {
tarval_string[i] = new_tarval_from_long(fname[i], mode_Bs);
}
- set_entity_variability(ent, variability_constant);
+ set_entity_linkage(ent, IR_LINKAGE_CONSTANT);
set_array_entity_values(ent, tarval_string, len);
} else {
- ent = entry->value;
+ ent = (ir_entity*)entry->value;
}
wd->locs[wd->id].fname = ent;
wd->locs[wd->id].lineno = lineno;
* Walker: assigns an ID to every block.
* Builds the string table
*/
-static void
-block_id_walker(ir_node * bb, void * data)
+static void block_id_walker(ir_node *bb, void *data)
{
- block_id_walker_data_t *wd = data;
+ block_id_walker_data_t *wd = (block_id_walker_data_t*)data;
wd->array[wd->id] = new_tarval_from_long(get_irn_node_nr(bb), mode_Iu);
instrument_block(bb, wd->symconst, wd->id);
++wd->id;
}
-#define IDENT(x) new_id_from_chars(x, sizeof(x) - 1)
+#define IDENT(x) new_id_from_chars(x, sizeof(x) - 1)
-ir_graph *
-ir_profile_instrument(const char *filename, unsigned flags)
+ir_graph *ir_profile_instrument(const char *filename, unsigned flags)
{
int n, i;
int n_blocks = 0;
- ir_entity *bblock_id;
- ir_entity *bblock_counts;
- ir_entity *ent_filename;
- ir_entity *ent_locations = NULL;
- ir_entity *loc_lineno = NULL;
- ir_entity *loc_name = NULL;
- ir_entity *ent;
- ir_type *array_type;
- ir_type *uint_type;
- ir_type *string_type;
- ir_type *character_type;
- ir_type *loc_type = NULL;
- ir_type *charptr_type;
- ir_type *gtp;
- ir_node *start_block;
- tarval **tarval_array;
- tarval **tarval_string;
- tarval *tv;
+ ir_entity *bblock_id;
+ ir_entity *bblock_counts;
+ ir_entity *ent_filename;
+ ir_entity *ent_locations = NULL;
+ ir_entity *loc_lineno = NULL;
+ ir_entity *loc_name = NULL;
+ ir_entity *ent;
+ ir_type *array_type;
+ ir_type *uint_type;
+ ir_type *string_type;
+ ir_type *character_type;
+ ir_type *loc_type = NULL;
+ ir_type *charptr_type;
+ ir_type *gtp;
+ ir_tarval **tarval_array;
+ ir_tarval **tarval_string;
+ ir_tarval *tv;
int filename_len = strlen(filename)+1;
ident *cur_ident;
unsigned align_l, align_n, size;
- ir_graph *rem;
block_id_walker_data_t wd;
symconst_symbol sym;
/* create all the necessary types and entities. Note that the
types must have a fixed layout, because we already running in the
backend */
- uint_type = new_type_primitive(IDENT("__uint"), mode_Iu);
+ uint_type = new_type_primitive(mode_Iu);
set_type_alignment_bytes(uint_type, get_type_size_bytes(uint_type));
- array_type = new_type_array(IDENT("__block_info_array"), 1, uint_type);
+ array_type = new_type_array(1, uint_type);
set_array_bounds_int(array_type, 0, 0, n_blocks);
set_type_size_bytes(array_type, n_blocks * get_mode_size_bytes(mode_Iu));
set_type_alignment_bytes(array_type, get_mode_size_bytes(mode_Iu));
set_type_state(array_type, layout_fixed);
- character_type = new_type_primitive(IDENT("__char"), mode_Bs);
- string_type = new_type_array(IDENT("__filename"), 1, character_type);
+ character_type = new_type_primitive(mode_Bs);
+ string_type = new_type_array(1, character_type);
set_array_bounds_int(string_type, 0, 0, filename_len);
set_type_size_bytes(string_type, filename_len);
set_type_alignment_bytes(string_type, 1);
cur_ident = IDENT("__FIRMPROF__BLOCK_IDS");
bblock_id = new_entity(gtp, cur_ident, array_type);
set_entity_ld_ident(bblock_id, cur_ident);
- set_entity_variability(bblock_id, variability_initialized);
cur_ident = IDENT("__FIRMPROF__BLOCK_COUNTS");
bblock_counts = new_entity(gtp, cur_ident, array_type);
set_entity_ld_ident(bblock_counts, cur_ident);
- set_entity_variability(bblock_counts, variability_initialized);
cur_ident = IDENT("__FIRMPROF__FILE_NAME");
ent_filename = new_entity(gtp, cur_ident, string_type);
size = get_type_size_bytes(uint_type);
set_entity_offset(loc_lineno, 0);
- charptr_type = new_type_pointer(IDENT("__charptr"), character_type, mode_P_data);
+ charptr_type = new_type_pointer(character_type);
align_n = get_type_size_bytes(charptr_type);
set_type_alignment_bytes(charptr_type, align_n);
loc_name = new_entity(loc_type, IDENT("name"), charptr_type);
set_type_size_bytes(loc_type, size);
set_type_state(loc_type, layout_fixed);
- loc_type = new_type_array(IDENT("__locarray"), 1, loc_type);
+ loc_type = new_type_array(1, loc_type);
set_array_bounds_int(string_type, 0, 0, n_blocks);
- cur_ident = IDENT("__FIRMPROF__LOCATIONS");
- ent_locations = new_entity(gtp, cur_ident, loc_type);
+ cur_ident = IDENT("__FIRMPROF__LOCATIONS");
+ ent_locations = new_entity(gtp, cur_ident, loc_type);
set_entity_ld_ident(ent_locations, cur_ident);
}
/* initialize count array */
- NEW_ARR_A(tarval *, tarval_array, n_blocks);
- tv = get_tarval_null(mode_Iu);
+ NEW_ARR_A(ir_tarval *, tarval_array, n_blocks);
+ tv = get_mode_null(mode_Iu);
for (i = 0; i < n_blocks; ++i) {
tarval_array[i] = tv;
}
set_array_entity_values(bblock_counts, tarval_array, n_blocks);
/* initialize function name string constant */
- tarval_string = ALLOCAN(tarval*, filename_len);
+ tarval_string = ALLOCAN(ir_tarval*, filename_len);
for (i = 0; i < filename_len; ++i) {
tarval_string[i] = new_tarval_from_long(filename[i], mode_Bs);
}
- set_entity_variability(ent_filename, variability_constant);
+ set_entity_linkage(ent_filename, IR_LINKAGE_CONSTANT);
set_array_entity_values(ent_filename, tarval_string, filename_len);
/* initialize block id array and instrument blocks */
}
for (n = get_irp_n_irgs() - 1; n >= 0; --n) {
- ir_graph *irg = get_irp_irg(n);
- int i;
- ir_node *endbb = get_irg_end_block(irg);
- fix_env env;
-
- set_current_ir_graph(irg);
+ ir_graph *irg = get_irp_irg(i);
+ ir_node *endbb = get_irg_end_block(irg);
+ int i;
+ fix_env env;
/* generate a symbolic constant pointing to the count array */
sym.entity_p = bblock_counts;
- wd.symconst = new_r_SymConst(irg, get_irg_start_block(irg), mode_P_data, sym, symconst_addr_ent);
+ wd.symconst = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
irg_block_walk_graph(irg, block_id_walker, NULL, &wd);
- start_block = get_irg_start_block(irg);
- env.end_block = get_irg_end_block(irg);
+ env.end_block = get_irg_end_block(irg);
irg_block_walk_graph(irg, fix_ssa, NULL, &env);
for (i = get_Block_n_cfgpreds(endbb) - 1; i >= 0; --i) {
ir_node *node = skip_Proj(get_Block_cfgpred(endbb, i));
switch (get_irn_opcode(node)) {
case iro_Return:
- ins[0] = get_irn_link(bb);
+ ins[0] = (ir_node*)get_irn_link(bb);
ins[1] = get_Return_mem(node);
- sync = new_r_Sync(irg, bb, 2, ins);
+ sync = new_r_Sync(bb, 2, ins);
set_Return_mem(node, sync);
break;
case iro_Raise:
- ins[0] = get_irn_link(bb);
+ ins[0] = (ir_node*)get_irn_link(bb);
ins[1] = get_Raise_mem(node);
- sync = new_r_Sync(irg, bb, 2, ins);
+ sync = new_r_Sync(bb, 2, ins);
set_Raise_mem(node, sync);
break;
default:
set_array_entity_values(bblock_id, tarval_array, n_blocks);
if (flags & profile_with_locations) {
+ ir_graph *irg = get_const_code_irg();
/* build the initializer for the locations */
- rem = current_ir_graph;
- current_ir_graph = get_const_code_irg();
ent = get_array_element_entity(loc_type);
- set_entity_variability(ent_locations, variability_constant);
+ set_entity_linkage(ent_locations, IR_LINKAGE_CONSTANT);
for (i = 0; i < n_blocks; ++i) {
compound_graph_path *path;
- tarval *tv;
+ ir_tarval *tv;
ir_node *n;
/* lineno */
set_compound_graph_path_node(path, 0, ent);
set_compound_graph_path_node(path, 1, loc_lineno);
tv = new_tarval_from_long(wd.locs[i].lineno, mode_Iu);
- add_compound_ent_value_w_path(ent_locations, new_Const(mode_Iu, tv), path);
+ add_compound_ent_value_w_path(ent_locations, new_r_Const(irg, tv), path);
/* name */
path = new_compound_graph_path(loc_type, 2);
set_compound_graph_path_node(path, 1, loc_name);
if (wd.locs[i].fname) {
sym.entity_p = wd.locs[i].fname;
- n = new_SymConst(mode_P_data, sym, symconst_addr_ent);
+ n = new_r_SymConst(irg, mode_P_data, sym, symconst_addr_ent);
} else {
- n = new_Const(mode_P_data, get_mode_null(mode_P_data));
+ n = new_r_Const(irg, get_mode_null(mode_P_data));
}
add_compound_ent_value_w_path(ent_locations, n, path);
}
return gen_initializer_irg(ent_filename, bblock_id, bblock_counts, n_blocks);
}
-static void
-profile_node_info(void *ctx, FILE *f, const ir_node *irn)
+static void profile_node_info(void *ctx, FILE *f, const ir_node *irn)
{
(void) ctx;
- if(is_Block(irn)) {
+ if (is_Block(irn)) {
fprintf(f, "profiled execution count: %u\n", ir_profile_get_block_execcount(irn));
}
}
-static void
-register_vcg_hook(void)
+static void register_vcg_hook(void)
{
memset(&hook, 0, sizeof(hook));
hook.hook._hook_node_info = profile_node_info;
register_hook(hook_node_info, &hook);
}
-static void
-unregister_vcg_hook(void)
+static void unregister_vcg_hook(void)
{
unregister_hook(hook_node_info, &hook);
}
* Reads the corresponding profile info file if it exists and returns a
* profile info struct
*/
-void
-ir_profile_read(const char *filename)
+void ir_profile_read(const char *filename)
{
FILE *f;
char buf[8];
size_t ret;
f = fopen(filename, "r");
- if(f == NULL) {
+ if (f == NULL) {
return;
}
printf("found profile data '%s'.\n", filename);
/* check magic */
ret = fread(buf, 8, 1, f);
- if(ret == 0 || strncmp(buf, "firmprof", 8) != 0) {
+ if (ret == 0 || strncmp(buf, "firmprof", 8) != 0) {
return;
}
- if(profile) ir_profile_free();
+ if (profile) ir_profile_free();
profile = new_set(cmp_execcount, 16);
- do {
+ for (;;) {
execcount_t query;
ret = fread(&query, sizeof(unsigned int), 2, f);
- if(ret != 2) break;
+ if (ret != 2) break;
set_insert(profile, &query, sizeof(query), query.block);
- } while(1);
+ }
fclose(f);
register_vcg_hook();
/**
* Frees the profile info
*/
-void
-ir_profile_free(void)
+void ir_profile_free(void)
{
- if(profile) {
+ if (profile) {
unregister_vcg_hook();
del_set(profile);
}
/**
* Tells whether profile module has acquired data
*/
-int
-ir_profile_has_data(void)
+int ir_profile_has_data(void)
{
return (profile != NULL);
}
{
execcount_t *ec, query;
- if(!profile)
+ if (!profile)
return 1;
query.block = get_irn_node_nr(block);
- ec = set_find(profile, &query, sizeof(query), get_irn_node_nr(block));
+ ec = (execcount_t*)set_find(profile, &query, sizeof(query), get_irn_node_nr(block));
- if(ec != NULL) {
+ if (ec != NULL) {
return ec->count;
} else {
ir_fprintf(stderr, "Warning: Profile contains no data for %+F\n",
}
}
-typedef struct _intialize_execfreq_env_t {
+typedef struct intialize_execfreq_env_t {
ir_graph *irg;
ir_exec_freq *execfreqs;
double freq_factor;
// minimal execution frequency (an execfreq of 0 confuses algos)
static const double MIN_EXECFREQ = 0.00001;
-static void initialize_execfreq(ir_node *block, void *data) {
- initialize_execfreq_env_t *env = data;
+static void initialize_execfreq(ir_node *block, void *data)
+{
+ initialize_execfreq_env_t *env = (initialize_execfreq_env_t*)data;
double freq;
- if(block == get_irg_start_block(env->irg)
+ if (block == get_irg_start_block(env->irg)
|| block == get_irg_end_block(env->irg)) {
freq = 1.0;
} else {
freq = ir_profile_get_block_execcount(block);
freq *= env->freq_factor;
- if(freq < MIN_EXECFREQ)
+ if (freq < MIN_EXECFREQ)
freq = MIN_EXECFREQ;
}
start_block = get_irg_start_block(irg);
count = ir_profile_get_block_execcount(start_block);
- if(count == 0) {
+ if (count == 0) {
// the function was never executed, so fallback to estimated freqs
free_execfreq(env.execfreqs);
projects / libfirm / blobdiff