/* 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;
static GTY(()) tree tree_indirect_call_profiler_fn;
+static GTY(()) tree tree_average_profiler_fn;
+static GTY(()) tree tree_ior_profiler_fn;
\f
static GTY(()) tree ic_void_ptr_var;
/* Add code:
static gcov* __gcov_indirect_call_counters; // pointer to actual counter
- static void* __gcov_indirect_call_callee; // actual callie addres
+ static void* __gcov_indirect_call_callee; // actual callee address
*/
static void
tree_init_ic_make_global_vars (void)
ptr_void = build_pointer_type (void_type_node);
ic_void_ptr_var
- = build_decl (VAR_DECL,
+ = build_decl (UNKNOWN_LOCATION, VAR_DECL,
get_identifier ("__gcov_indirect_call_callee"),
ptr_void);
TREE_STATIC (ic_void_ptr_var) = 1;
gcov_type_ptr = build_pointer_type (get_gcov_type ());
ic_gcov_type_ptr_var
- = build_decl (VAR_DECL,
+ = build_decl (UNKNOWN_LOCATION, VAR_DECL,
get_identifier ("__gcov_indirect_call_counters"),
gcov_type_ptr);
TREE_STATIC (ic_gcov_type_ptr_var) = 1;
tree one_value_profiler_fn_type;
tree gcov_type_ptr;
tree ic_profiler_fn_type;
+ tree average_profiler_fn_type;
if (!gcov_type_node)
{
tree_indirect_call_profiler_fn
= build_fn_decl ("__gcov_indirect_call_profiler",
ic_profiler_fn_type);
+ /* void (*) (gcov_type *, gcov_type) */
+ average_profiler_fn_type
+ = build_function_type_list (void_type_node,
+ gcov_type_ptr, gcov_type_node, NULL_TREE);
+ tree_average_profiler_fn
+ = build_fn_decl ("__gcov_average_profiler",
+ average_profiler_fn_type);
+ tree_ior_profiler_fn
+ = build_fn_decl ("__gcov_ior_profiler",
+ average_profiler_fn_type);
}
}
+/* New call was added, make goto call edges if neccesary. */
+
+static void
+add_abnormal_goto_call_edges (gimple_stmt_iterator gsi)
+{
+ gimple stmt = gsi_stmt (gsi);
+
+ if (!stmt_can_make_abnormal_goto (stmt))
+ return;
+ if (!gsi_end_p (gsi))
+ split_block (gimple_bb (stmt), stmt);
+ make_abnormal_goto_edges (gimple_bb (stmt), true);
+}
+
/* Output instructions as GIMPLE trees to increment the edge
execution count, and insert them on E. We rely on
- bsi_insert_on_edge to preserve the order. */
+ gsi_insert_on_edge to preserve the order. */
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);
- bsi_insert_on_edge (e, stmt1);
- bsi_insert_on_edge (e, stmt2);
- bsi_insert_on_edge (e, stmt3);
+ tree ref, one;
+ gimple 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 = gimple_build_assign (gcov_type_tmp_var, ref);
+ stmt2 = gimple_build_assign_with_ops (PLUS_EXPR, gcov_type_tmp_var,
+ gcov_type_tmp_var, one);
+ stmt3 = gimple_build_assign (unshare_expr (ref), gcov_type_tmp_var);
+ gsi_insert_on_edge (e, stmt1);
+ gsi_insert_on_edge (e, stmt2);
+ gsi_insert_on_edge (e, stmt3);
}
-/* Emits code to get VALUE to instrument at BSI, and returns the
+/* Emits code to get VALUE to instrument at GSI, and returns the
variable containing the value. */
static tree
-prepare_instrumented_value (block_stmt_iterator *bsi,
- histogram_value value)
+prepare_instrumented_value (gimple_stmt_iterator *gsi, histogram_value value)
{
tree val = value->hvalue.value;
- return force_gimple_operand_bsi (bsi, fold_convert (gcov_type_node, val),
- true, NULL_TREE);
+ if (POINTER_TYPE_P (TREE_TYPE (val)))
+ val = fold_convert (sizetype, val);
+ return force_gimple_operand_gsi (gsi, fold_convert (gcov_type_node, val),
+ true, NULL_TREE, true, GSI_SAME_STMT);
}
/* Output instructions as GIMPLE trees to increment the interval histogram
static void
tree_gen_interval_profiler (histogram_value value, unsigned tag, unsigned base)
{
- tree stmt = value->hvalue.stmt;
- block_stmt_iterator bsi = bsi_for_stmt (stmt);
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
tree ref = tree_coverage_counter_ref (tag, base), ref_ptr;
- tree args, 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);
+ gimple call;
+ tree 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,
+ ref_ptr = force_gimple_operand_gsi (&gsi,
build_addr (ref, current_function_decl),
- true, NULL_TREE);
- 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);
- bsi_insert_before (&bsi, call, BSI_SAME_STMT);
+ true, NULL_TREE, true, GSI_SAME_STMT);
+ val = prepare_instrumented_value (&gsi, value);
+ call = gimple_build_call (tree_interval_profiler_fn, 4,
+ ref_ptr, val, start, steps);
+ gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ add_abnormal_goto_call_edges (gsi);
}
/* Output instructions as GIMPLE trees to increment the power of two histogram
static void
tree_gen_pow2_profiler (histogram_value value, unsigned tag, unsigned base)
{
- 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;
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ gimple call;
+ tree val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
- 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);
- bsi_insert_before (&bsi, call, BSI_SAME_STMT);
+ ref_ptr = force_gimple_operand_gsi (&gsi, ref_ptr,
+ true, NULL_TREE, true, GSI_SAME_STMT);
+ val = prepare_instrumented_value (&gsi, value);
+ call = gimple_build_call (tree_pow2_profiler_fn, 2, ref_ptr, val);
+ gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ add_abnormal_goto_call_edges (gsi);
}
/* Output instructions as GIMPLE trees for code to find the most common value.
static void
tree_gen_one_value_profiler (histogram_value value, unsigned tag, unsigned base)
{
- 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;
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ gimple call;
+ tree val;
- ref_ptr = force_gimple_operand_bsi (&bsi,
- build_addr (ref, current_function_decl),
- true, NULL_TREE);
- 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);
- bsi_insert_before (&bsi, call, BSI_SAME_STMT);
+ ref_ptr = force_gimple_operand_gsi (&gsi, ref_ptr,
+ true, NULL_TREE, true, GSI_SAME_STMT);
+ val = prepare_instrumented_value (&gsi, value);
+ call = gimple_build_call (tree_one_value_profiler_fn, 2, ref_ptr, val);
+ gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ add_abnormal_goto_call_edges (gsi);
}
/* Output instructions as GIMPLE trees for code to find the most
common called function in indirect call.
- VALUE is the call expression whose indirect callie is profiled.
+ VALUE is the call expression whose indirect callee is profiled.
TAG is the tag of the section for counters, BASE is offset of the
counter position. */
static void
tree_gen_ic_profiler (histogram_value value, unsigned tag, unsigned base)
{
- 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 tmp1;
+ gimple stmt1, stmt2, stmt3;
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ 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_gsi (&gsi, ref_ptr,
+ true, NULL_TREE, true, GSI_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);
-
- bsi_insert_before (&bsi, stmt1, BSI_SAME_STMT);
- bsi_insert_before (&bsi, stmt2, BSI_SAME_STMT);
- bsi_insert_before (&bsi, stmt3, BSI_SAME_STMT);
+ stmt1 = gimple_build_assign (ic_gcov_type_ptr_var, ref_ptr);
+ stmt2 = gimple_build_assign (tmp1, unshare_expr (value->hvalue.value));
+ stmt3 = gimple_build_assign (ic_void_ptr_var, tmp1);
+
+ gsi_insert_before (&gsi, stmt1, GSI_SAME_STMT);
+ gsi_insert_before (&gsi, stmt2, GSI_SAME_STMT);
+ gsi_insert_before (&gsi, stmt3, GSI_SAME_STMT);
}
/* Output instructions as GIMPLE trees for code to find the most
common called function in indirect call. Insert instructions at the
- begining of every possible called function.
+ beginning of every possible called function.
*/
static void
tree_gen_ic_func_profiler (void)
{
struct cgraph_node * c_node = cgraph_node (current_function_decl);
- block_stmt_iterator bsi;
+ gimple_stmt_iterator gsi;
edge e;
basic_block bb;
edge_iterator ei;
- tree stmt1;
- tree args, tree_uid, cur_func;
+ gimple stmt1, stmt2;
+ tree tree_uid, cur_func;
- if (flag_unit_at_a_time)
- {
- if (!c_node->needed)
- return;
- }
+ if (!c_node->needed)
+ return;
tree_init_edge_profiler ();
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,
+ gsi = gsi_start_bb (bb);
+
+ cur_func = force_gimple_operand_gsi (&gsi,
build_addr (current_function_decl,
current_function_decl),
- true, NULL_TREE);
+ true, NULL_TREE,
+ true, GSI_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 = gimple_build_call (tree_indirect_call_profiler_fn, 4,
+ ic_gcov_type_ptr_var,
+ tree_uid,
+ cur_func,
+ ic_void_ptr_var);
+ gsi_insert_after (&gsi, stmt1, GSI_NEW_STMT);
+ gcc_assert (EDGE_COUNT (bb->succs) == 1);
+ bb = split_edge (EDGE_I (bb->succs, 0));
+ add_abnormal_goto_call_edges (gsi);
+
+ gsi = gsi_start_bb (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 = gimple_build_assign (ic_void_ptr_var, void0);
+ gsi_insert_after (&gsi, stmt2, GSI_NEW_STMT);
}
}
section for counters, BASE is offset of the counter position. */
static void
-tree_gen_const_delta_profiler (histogram_value value ATTRIBUTE_UNUSED,
- unsigned tag ATTRIBUTE_UNUSED,
- unsigned base ATTRIBUTE_UNUSED)
+tree_gen_const_delta_profiler (histogram_value value ATTRIBUTE_UNUSED,
+ unsigned tag ATTRIBUTE_UNUSED,
+ unsigned base ATTRIBUTE_UNUSED)
{
/* FIXME implement this. */
#ifdef ENABLE_CHECKING
gcc_unreachable ();
}
+/* Output instructions as GIMPLE trees to increment the average histogram
+ counter. VALUE is the expression whose value is profiled. TAG is the
+ tag of the section for counters, BASE is offset of the counter position. */
+
+static void
+tree_gen_average_profiler (histogram_value value, unsigned tag, unsigned base)
+{
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ gimple call;
+ tree val;
+
+ ref_ptr = force_gimple_operand_gsi (&gsi, ref_ptr,
+ true, NULL_TREE,
+ true, GSI_SAME_STMT);
+ val = prepare_instrumented_value (&gsi, value);
+ call = gimple_build_call (tree_average_profiler_fn, 2, ref_ptr, val);
+ gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ add_abnormal_goto_call_edges (gsi);
+}
+
+/* Output instructions as GIMPLE trees to increment the ior histogram
+ counter. VALUE is the expression whose value is profiled. TAG is the
+ tag of the section for counters, BASE is offset of the counter position. */
+
+static void
+tree_gen_ior_profiler (histogram_value value, unsigned tag, unsigned base)
+{
+ gimple stmt = value->hvalue.stmt;
+ gimple_stmt_iterator gsi = gsi_for_stmt (stmt);
+ tree ref_ptr = tree_coverage_counter_addr (tag, base);
+ gimple call;
+ tree val;
+
+ ref_ptr = force_gimple_operand_gsi (&gsi, ref_ptr,
+ true, NULL_TREE, true, GSI_SAME_STMT);
+ val = prepare_instrumented_value (&gsi, value);
+ call = gimple_build_call (tree_ior_profiler_fn, 2, ref_ptr, val);
+ gsi_insert_before (&gsi, call, GSI_NEW_STMT);
+ add_abnormal_goto_call_edges (gsi);
+}
+
/* Return 1 if tree-based profiling is in effect, else 0.
If it is, set up hooks for tree-based profiling.
Gate for pass_tree_profile. */
if (profile_arc_flag || flag_test_coverage || flag_branch_probabilities)
{
tree_register_profile_hooks ();
- tree_register_value_prof_hooks ();
+ gimple_register_value_prof_hooks ();
return true;
}
return false;
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 */
0, /* static_pass_number */
TV_BRANCH_PROB, /* tv_id */
PROP_gimple_leh | PROP_cfg, /* properties_required */
- PROP_gimple_leh | PROP_cfg, /* properties_provided */
+ 0, /* properties_provided */
0, /* properties_destroyed */
0, /* todo_flags_start */
- TODO_verify_stmts, /* todo_flags_finish */
- 0 /* letter */
+ TODO_verify_stmts | TODO_dump_func /* todo_flags_finish */
+ }
};
struct profile_hooks tree_profile_hooks =
{
- tree_init_edge_profiler, /* init_edge_profiler */
- tree_gen_edge_profiler, /* gen_edge_profiler */
- tree_gen_interval_profiler, /* gen_interval_profiler */
- tree_gen_pow2_profiler, /* gen_pow2_profiler */
- tree_gen_one_value_profiler, /* gen_one_value_profiler */
- tree_gen_const_delta_profiler,/* gen_const_delta_profiler */
- tree_gen_ic_profiler, /* gen_ic_profiler */
+ tree_init_edge_profiler, /* init_edge_profiler */
+ tree_gen_edge_profiler, /* gen_edge_profiler */
+ tree_gen_interval_profiler, /* gen_interval_profiler */
+ tree_gen_pow2_profiler, /* gen_pow2_profiler */
+ tree_gen_one_value_profiler, /* gen_one_value_profiler */
+ tree_gen_const_delta_profiler, /* gen_const_delta_profiler */
+ tree_gen_ic_profiler, /* gen_ic_profiler */
+ tree_gen_average_profiler, /* gen_average_profiler */
+ tree_gen_ior_profiler /* gen_ior_profiler */
};
#include "gt-tree-profile.h"
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