static GTY(()) tree tree_pow2_profiler_fn;
static GTY(()) tree tree_one_value_profiler_fn;
static GTY(()) tree tree_indirect_call_profiler_fn;
-static GTY(()) tree tree_time_profiler_fn;
static GTY(()) tree tree_average_profiler_fn;
static GTY(()) tree tree_ior_profiler_fn;
+static GTY(()) tree tree_time_profiler_counter;
static GTY(()) tree ic_void_ptr_var;
static void
init_ic_make_global_vars (void)
{
- tree gcov_type_ptr;
+ tree gcov_type_ptr;
ptr_void = build_pointer_type (void_type_node);
/* Create the type and function decls for the interface with gcov. */
void
-gimple_init_edge_profiler (void)
+gimple_init_gcov_profiler (void)
{
tree interval_profiler_fn_type;
tree pow2_profiler_fn_type;
tree gcov_type_ptr;
tree ic_profiler_fn_type;
tree average_profiler_fn_type;
- tree time_profiler_fn_type;
const char *profiler_fn_name;
const char *fn_name;
= tree_cons (get_identifier ("leaf"), NULL,
DECL_ATTRIBUTES (tree_indirect_call_profiler_fn));
- /* void (*) (gcov_type *, gcov_type, void *) */
- time_profiler_fn_type
- = build_function_type_list (void_type_node,
- gcov_type_ptr, NULL_TREE);
- fn_name = concat ("__gcov_time_profiler", fn_suffix, NULL);
- tree_time_profiler_fn = build_fn_decl (fn_name, time_profiler_fn_type);
- free (CONST_CAST (char *, fn_name));
- TREE_NOTHROW (tree_time_profiler_fn) = 1;
- DECL_ATTRIBUTES (tree_time_profiler_fn)
- = tree_cons (get_identifier ("leaf"), NULL,
- DECL_ATTRIBUTES (tree_time_profiler_fn));
+ tree_time_profiler_counter
+ = build_decl (UNKNOWN_LOCATION, VAR_DECL,
+ get_identifier ("__gcov_time_profiler_counter"),
+ get_gcov_type ());
+ TREE_PUBLIC (tree_time_profiler_counter) = 1;
+ DECL_EXTERNAL (tree_time_profiler_counter) = 1;
+ TREE_STATIC (tree_time_profiler_counter) = 1;
+ DECL_ARTIFICIAL (tree_time_profiler_counter) = 1;
+ DECL_INITIAL (tree_time_profiler_counter) = NULL;
+
+ varpool_node::finalize_decl (tree_time_profiler_counter);
/* void (*) (gcov_type *, gcov_type) */
average_profiler_fn_type
DECL_ASSEMBLER_NAME (tree_pow2_profiler_fn);
DECL_ASSEMBLER_NAME (tree_one_value_profiler_fn);
DECL_ASSEMBLER_NAME (tree_indirect_call_profiler_fn);
- DECL_ASSEMBLER_NAME (tree_time_profiler_fn);
DECL_ASSEMBLER_NAME (tree_average_profiler_fn);
DECL_ASSEMBLER_NAME (tree_ior_profiler_fn);
}
if (c_node->only_called_directly_p ())
return;
- gimple_init_edge_profiler ();
+ gimple_init_gcov_profiler ();
/* Insert code:
counter position and GSI is the iterator we place the counter. */
void
-gimple_gen_time_profiler (unsigned tag, unsigned base,
- gimple_stmt_iterator &gsi)
+gimple_gen_time_profiler (unsigned tag, unsigned base)
{
- tree ref_ptr = tree_coverage_counter_addr (tag, base);
- gcall *call;
+ tree type = get_gcov_type ();
+ basic_block cond_bb
+ = split_edge (single_succ_edge (ENTRY_BLOCK_PTR_FOR_FN (cfun)));
+
+ basic_block update_bb = split_edge (single_succ_edge (cond_bb));
+
+ edge true_edge = single_succ_edge (cond_bb);
+ true_edge->flags = EDGE_TRUE_VALUE;
+ true_edge->probability = PROB_VERY_UNLIKELY;
+ edge e
+ = make_edge (cond_bb, single_succ_edge (update_bb)->dest, EDGE_FALSE_VALUE);
+ e->probability = REG_BR_PROB_BASE - true_edge->probability;
+
+ gimple_stmt_iterator gsi = gsi_start_bb (cond_bb);
+ tree original_ref = tree_coverage_counter_ref (tag, base);
+ tree ref = force_gimple_operand_gsi (&gsi, original_ref, true, NULL_TREE,
+ true, GSI_SAME_STMT);
+ tree one = build_int_cst (type, 1);
- ref_ptr = force_gimple_operand_gsi (&gsi, ref_ptr,
- true, NULL_TREE, true, GSI_SAME_STMT);
- call = gimple_build_call (tree_time_profiler_fn, 1, ref_ptr);
- gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ /* Emit: if (counters[0] != 0). */
+ gcond *cond = gimple_build_cond (EQ_EXPR, ref, build_int_cst (type, 0),
+ NULL, NULL);
+ gsi_insert_before (&gsi, cond, GSI_NEW_STMT);
+
+ gsi = gsi_start_bb (update_bb);
+
+ /* Emit: counters[0] = ++__gcov_time_profiler_counter. */
+ if (flag_profile_update == PROFILE_UPDATE_ATOMIC)
+ {
+ tree ptr = make_temp_ssa_name (type, NULL, "time_profiler_counter_ptr");
+ tree addr = build1 (ADDR_EXPR, build_pointer_type (type),
+ tree_time_profiler_counter);
+ gassign *assign = gimple_build_assign (ptr, NOP_EXPR, addr);
+ gsi_insert_before (&gsi, assign, GSI_NEW_STMT);
+ tree f = builtin_decl_explicit (LONG_LONG_TYPE_SIZE > 32
+ ? BUILT_IN_ATOMIC_ADD_FETCH_8:
+ BUILT_IN_ATOMIC_ADD_FETCH_4);
+ gcall *stmt = gimple_build_call (f, 3, ptr, one,
+ build_int_cst (integer_type_node,
+ MEMMODEL_RELAXED));
+ tree result_type = TREE_TYPE (TREE_TYPE (f));
+ tree tmp = make_temp_ssa_name (result_type, NULL, "time_profile");
+ gimple_set_lhs (stmt, tmp);
+ gsi_insert_after (&gsi, stmt, GSI_NEW_STMT);
+ tmp = make_temp_ssa_name (type, NULL, "time_profile");
+ assign = gimple_build_assign (tmp, NOP_EXPR,
+ gimple_call_lhs (stmt));
+ gsi_insert_after (&gsi, assign, GSI_NEW_STMT);
+ assign = gimple_build_assign (original_ref, tmp);
+ gsi_insert_after (&gsi, assign, GSI_NEW_STMT);
+ }
+ else
+ {
+ tree tmp = make_temp_ssa_name (type, NULL, "time_profile");
+ gassign *assign = gimple_build_assign (tmp, tree_time_profiler_counter);
+ gsi_insert_before (&gsi, assign, GSI_NEW_STMT);
+
+ tmp = make_temp_ssa_name (type, NULL, "time_profile");
+ assign = gimple_build_assign (tmp, PLUS_EXPR, gimple_assign_lhs (assign),
+ one);
+ gsi_insert_after (&gsi, assign, GSI_NEW_STMT);
+ assign = gimple_build_assign (original_ref, tmp);
+ gsi_insert_after (&gsi, assign, GSI_NEW_STMT);
+ assign = gimple_build_assign (tree_time_profiler_counter, tmp);
+ gsi_insert_after (&gsi, assign, GSI_NEW_STMT);
+ }
}
/* Output instructions as GIMPLE trees to increment the average histogram
projects / gcc.git / commitdiff