/* Calculate branch probabilities, and basic block execution counts.
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
+ Free Software Foundation, Inc.
Contributed by James E. Wilson, UC Berkeley/Cygnus Support;
based on some ideas from Dain Samples of UC Berkeley.
Further mangling by Bob Manson, Cygnus Support.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-along with GCC; see the file COPYING. If not, write to the Free
-Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Generate basic block profile instrumentation and auxiliary files.
Tree-based version. See profile.c for overview. */
#include "cgraph.h"
static GTY(()) tree gcov_type_node;
+static GTY(()) tree gcov_type_tmp_var;
static GTY(()) tree tree_interval_profiler_fn;
static GTY(()) tree tree_pow2_profiler_fn;
static GTY(()) tree tree_one_value_profiler_fn;
/* Add code:
static gcov* __gcov_indirect_call_counters; // pointer to actual counter
- static void* __gcov_indirect_call_callee; // actual callee addres
+ static void* __gcov_indirect_call_callee; // actual callee address
*/
static void
tree_init_ic_make_global_vars (void)
static void
tree_gen_edge_profiler (int edgeno, edge e)
{
- tree tmp1 = create_tmp_var (gcov_type_node, "PROF");
- tree tmp2 = create_tmp_var (gcov_type_node, "PROF");
- tree ref = tree_coverage_counter_ref (GCOV_COUNTER_ARCS, edgeno);
- tree stmt1 = build2 (GIMPLE_MODIFY_STMT, gcov_type_node, tmp1, ref);
- tree stmt2 = build2 (GIMPLE_MODIFY_STMT, gcov_type_node, tmp2,
- build2 (PLUS_EXPR, gcov_type_node,
- tmp1, integer_one_node));
- tree stmt3 = build2 (GIMPLE_MODIFY_STMT, gcov_type_node, ref, tmp2);
+ tree ref, one, stmt1, stmt2, stmt3;
+
+ /* We share one temporary variable declaration per function. This
+ gets re-set in tree_profiling. */
+ if (gcov_type_tmp_var == NULL_TREE)
+ gcov_type_tmp_var = create_tmp_var (gcov_type_node, "PROF_edge_counter");
+ ref = tree_coverage_counter_ref (GCOV_COUNTER_ARCS, edgeno);
+ one = build_int_cst (gcov_type_node, 1);
+ stmt1 = build_gimple_modify_stmt (gcov_type_tmp_var, ref);
+ stmt2 = build_gimple_modify_stmt (gcov_type_tmp_var,
+ build2 (PLUS_EXPR, gcov_type_node,
+ gcov_type_tmp_var, one));
+ stmt3 = build_gimple_modify_stmt (unshare_expr (ref), gcov_type_tmp_var);
bsi_insert_on_edge (e, stmt1);
bsi_insert_on_edge (e, stmt2);
bsi_insert_on_edge (e, stmt3);
{
tree val = value->hvalue.value;
return force_gimple_operand_bsi (bsi, fold_convert (gcov_type_node, val),
- true, NULL_TREE);
+ true, NULL_TREE, true, BSI_SAME_STMT);
}
/* Output instructions as GIMPLE trees to increment the interval histogram
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, call, val;
+ tree call, val;
tree start = build_int_cst_type (integer_type_node, value->hdata.intvl.int_start);
tree steps = build_int_cst_type (unsigned_type_node, value->hdata.intvl.steps);
ref_ptr = force_gimple_operand_bsi (&bsi,
build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ true, NULL_TREE, true, BSI_SAME_STMT);
val = prepare_instrumented_value (&bsi, value);
- args = tree_cons (NULL_TREE, ref_ptr,
- tree_cons (NULL_TREE, val,
- tree_cons (NULL_TREE, start,
- tree_cons (NULL_TREE, steps,
- NULL_TREE))));
- call = build_function_call_expr (tree_interval_profiler_fn, args);
+ call = build_call_expr (tree_interval_profiler_fn, 4,
+ ref_ptr, val, start, steps);
bsi_insert_before (&bsi, call, BSI_SAME_STMT);
}
{
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
- tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, call, val;
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ tree call, val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ ref_ptr = force_gimple_operand_bsi (&bsi, ref_ptr,
+ true, NULL_TREE, true, BSI_SAME_STMT);
val = prepare_instrumented_value (&bsi, value);
- args = tree_cons (NULL_TREE, ref_ptr,
- tree_cons (NULL_TREE, val,
- NULL_TREE));
- call = build_function_call_expr (tree_pow2_profiler_fn, args);
+ call = build_call_expr (tree_pow2_profiler_fn, 2, ref_ptr, val);
bsi_insert_before (&bsi, call, BSI_SAME_STMT);
}
{
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
- tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, call, val;
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ tree call, val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ ref_ptr = force_gimple_operand_bsi (&bsi, ref_ptr,
+ true, NULL_TREE, true, BSI_SAME_STMT);
val = prepare_instrumented_value (&bsi, value);
- args = tree_cons (NULL_TREE, ref_ptr,
- tree_cons (NULL_TREE, val,
- NULL_TREE));
- call = build_function_call_expr (tree_one_value_profiler_fn, args);
+ call = build_call_expr (tree_one_value_profiler_fn, 2, ref_ptr, val);
bsi_insert_before (&bsi, call, BSI_SAME_STMT);
}
tree tmp1, stmt1, stmt2, stmt3;
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
- tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ ref_ptr = force_gimple_operand_bsi (&bsi, ref_ptr,
+ true, NULL_TREE, true, BSI_SAME_STMT);
/* Insert code:
*/
tmp1 = create_tmp_var (ptr_void, "PROF");
- stmt1 = build2 (GIMPLE_MODIFY_STMT,
- build_pointer_type (get_gcov_type ()),
- ic_gcov_type_ptr_var, ref_ptr);
- stmt2 = build2 (GIMPLE_MODIFY_STMT, ptr_void, tmp1,
- unshare_expr (value->hvalue.value));
- stmt3 = build2 (GIMPLE_MODIFY_STMT, ptr_void,
- ic_void_ptr_var, tmp1);
+ stmt1 = build_gimple_modify_stmt (ic_gcov_type_ptr_var, ref_ptr);
+ stmt2 = build_gimple_modify_stmt (tmp1, unshare_expr (value->hvalue.value));
+ stmt3 = build_gimple_modify_stmt (ic_void_ptr_var, tmp1);
bsi_insert_before (&bsi, stmt1, BSI_SAME_STMT);
bsi_insert_before (&bsi, stmt2, BSI_SAME_STMT);
edge e;
basic_block bb;
edge_iterator ei;
- tree stmt1;
- tree args, tree_uid, cur_func;
+ tree stmt1, stmt2;
+ tree tree_uid, cur_func;
if (flag_unit_at_a_time)
{
FOR_EACH_EDGE (e, ei, ENTRY_BLOCK_PTR->succs)
{
+ tree void0;
+
bb = split_edge (e);
bsi = bsi_start (bb);
+
cur_func = force_gimple_operand_bsi (&bsi,
build_addr (current_function_decl,
current_function_decl),
- true, NULL_TREE);
+ true, NULL_TREE,
+ true, BSI_SAME_STMT);
tree_uid = build_int_cst (gcov_type_node, c_node->pid);
- args = tree_cons (NULL_TREE, ic_gcov_type_ptr_var,
- tree_cons (NULL_TREE, tree_uid,
- tree_cons (NULL_TREE, cur_func,
- tree_cons (NULL_TREE,
- ic_void_ptr_var,
- NULL_TREE))));
- stmt1 = build_function_call_expr (tree_indirect_call_profiler_fn, args);
- bsi_insert_after (&bsi, stmt1, BSI_SAME_STMT);
+ stmt1 = build_call_expr (tree_indirect_call_profiler_fn, 4,
+ ic_gcov_type_ptr_var,
+ tree_uid,
+ cur_func,
+ ic_void_ptr_var);
+ bsi_insert_after (&bsi, stmt1, BSI_NEW_STMT);
+
+ gcc_assert (EDGE_COUNT (bb->succs) == 1);
+ bb = split_edge (EDGE_I (bb->succs, 0));
+ bsi = bsi_start (bb);
+ /* Set __gcov_indirect_call_callee to 0,
+ so that calls from other modules won't get misattributed
+ to the last caller of the current callee. */
+ void0 = build_int_cst (build_pointer_type (void_type_node), 0);
+ stmt2 = build_gimple_modify_stmt (ic_void_ptr_var, void0);
+ bsi_insert_after (&bsi, stmt2, BSI_NEW_STMT);
}
}
{
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
- tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, call, val;
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ tree call, val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ ref_ptr = force_gimple_operand_bsi (&bsi, ref_ptr,
+ true, NULL_TREE,
+ true, BSI_SAME_STMT);
val = prepare_instrumented_value (&bsi, value);
- args = tree_cons (NULL_TREE, ref_ptr, tree_cons (NULL_TREE, val, NULL_TREE));
- call = build_function_call_expr (tree_average_profiler_fn, args);
+ call = build_call_expr (tree_average_profiler_fn, 2, ref_ptr, val);
bsi_insert_before (&bsi, call, BSI_SAME_STMT);
}
{
tree stmt = value->hvalue.stmt;
block_stmt_iterator bsi = bsi_for_stmt (stmt);
- tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, call, val;
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ tree call, val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
+ ref_ptr = force_gimple_operand_bsi (&bsi, ref_ptr,
+ true, NULL_TREE, true, BSI_SAME_STMT);
val = prepare_instrumented_value (&bsi, value);
- args = tree_cons (NULL_TREE, ref_ptr, tree_cons (NULL_TREE, val, NULL_TREE));
- call = build_function_call_expr (tree_ior_profiler_fn, args);
+ call = build_call_expr (tree_ior_profiler_fn, 2, ref_ptr, val);
bsi_insert_before (&bsi, call, BSI_SAME_STMT);
}
tree_profiling (void)
{
/* Don't profile functions produced at destruction time, particularly
- the gcov datastructure initializer. */
- if (cgraph_state == CGRAPH_STATE_FINISHED)
+ the gcov datastructure initializer. Don't profile if it has been
+ already instrumented either (when OpenMP expansion creates
+ child function from already instrumented body). */
+ if (cgraph_state == CGRAPH_STATE_FINISHED
+ || cfun->after_tree_profile)
return 0;
+
+ /* Re-set global shared temporary variable for edge-counters. */
+ gcov_type_tmp_var = NULL_TREE;
+
branch_prob ();
if (! flag_branch_probabilities
easy to adjust it, if and when there is some. */
free_dominance_info (CDI_DOMINATORS);
free_dominance_info (CDI_POST_DOMINATORS);
+ cfun->after_tree_profile = 1;
return 0;
}
-struct tree_opt_pass pass_tree_profile =
+struct gimple_opt_pass pass_tree_profile =
{
+ {
+ GIMPLE_PASS,
"tree_profile", /* name */
do_tree_profiling, /* gate */
tree_profiling, /* execute */
PROP_gimple_leh | PROP_cfg, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_verify_stmts | TODO_dump_func, /* todo_flags_finish */
- 0 /* letter */
+ TODO_verify_stmts | TODO_dump_func /* todo_flags_finish */
+ }
};
struct profile_hooks tree_profile_hooks =
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