628c189edb
2009-03-27 Richard Guenther <rguenther@suse.de> * gimplify.c (mark_addressable): Export. * tree-flow.h (mark_addressable): Declare. * tree-ssa-loop-manip.c (create_iv): Mark the base addressable. * tree-ssa.c (verify_phi_args): Verify that address taken variables have TREE_ADDRESSABLE set. 2009-03-27 Richard Guenther <rguenther@suse.de> * fold-const.c (build_fold_addr_expr_with_type_1): Rename back to ... (build_fold_addr_expr_with_type): ... this. Remove in_fold handling. Do not mark decls TREE_ADDRESSABLE. (build_fold_addr_expr): Adjust. (fold_addr_expr): Remove. (fold_unary): Use build_fold_addr_expr. (fold_comparison): Likewise. (split_address_to_core_and_offset): Likewise. * coverage.c (tree_coverage_counter_addr): Mark the array decl TREE_ADDRESSABLE. * gimplify.c (mark_addressable): Do not exclude RESULT_DECLs. (gimplify_modify_expr_to_memcpy): Mark source and destination addressable. * omp-low.c (create_omp_child_function): Mark the object decl TREE_ADDRESSABLE. (lower_rec_input_clauses): Mark the var we take the address of TREE_ADDRESSABLE. (lower_omp_taskreg): Mark the sender decl TREE_ADDRESSABLE. fortran/ * trans-array.c (gfc_conv_descriptor_data_addr): Use gfc_build_addr_expr instead of build_fold_addr_expr. (gfc_trans_allocate_array_storage, gfc_trans_array_constructor_value, gfc_trans_constant_array_constructor, gfc_conv_array_data, gfc_conv_expr_descriptor, gfc_conv_array_parameter): Likewise. * trans-expr.c (gfc_conv_missing_dummy, gfc_conv_variable, gfc_conv_function_val, gfc_conv_operator_assign, gfc_conv_subref_array_arg, gfc_conv_function_call, gfc_conv_expr_reference, gfc_trans_scalar_assign): Likewise. * trans-intrinsic.c (gfc_conv_intrinsic_exponent, gfc_conv_intrinsic_ctime, gfc_conv_intrinsic_fdate, gfc_conv_intrinsic_ttynam, gfc_conv_intrinsic_minmax_char, gfc_conv_intrinsic_fraction, gfc_conv_intrinsic_spacing, gfc_conv_intrinsic_rrspacing, gfc_conv_intrinsic_set_exponent, gfc_conv_intrinsic_array_transfer, gfc_conv_intrinsic_transfer, gfc_conv_intrinsic_si_kind, gfc_conv_intrinsic_trim): Likewise. * trans-io.c (gfc_trans_io_runtime_check, set_parameter_ref, gfc_convert_array_to_string, gfc_trans_open, gfc_trans_close, build_filepos, gfc_trans_inquire, gfc_trans_wait, nml_get_addr_expr, transfer_namelist_element, build_dt, gfc_trans_dt_end, transfer_array_component, transfer_expr, transfer_array_desc, gfc_trans_transfer): Likewise. * trans-stmt.c (gfc_trans_allocate, gfc_trans_deallocate): Likewise. * trans.c (gfc_build_addr_expr): Mark the base of the address TREE_ADDRESSABLE. From-SVN: r145142
1038 lines
29 KiB
C
1038 lines
29 KiB
C
/* Read and write coverage files, and associated functionality.
|
||
Copyright (C) 1990, 1991, 1992, 1993, 1994, 1996, 1997, 1998, 1999,
|
||
2000, 2001, 2003, 2004, 2005, 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.
|
||
Further mangled by Nathan Sidwell, CodeSourcery
|
||
|
||
This file is part of GCC.
|
||
|
||
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 3, or (at your option) any later
|
||
version.
|
||
|
||
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
|
||
WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
||
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||
for more details.
|
||
|
||
You should have received a copy of the GNU General Public License
|
||
along with GCC; see the file COPYING3. If not see
|
||
<http://www.gnu.org/licenses/>. */
|
||
|
||
|
||
#define GCOV_LINKAGE
|
||
|
||
#include "config.h"
|
||
#include "system.h"
|
||
#include "coretypes.h"
|
||
#include "tm.h"
|
||
#include "rtl.h"
|
||
#include "tree.h"
|
||
#include "flags.h"
|
||
#include "output.h"
|
||
#include "regs.h"
|
||
#include "expr.h"
|
||
#include "function.h"
|
||
#include "toplev.h"
|
||
#include "tm_p.h"
|
||
#include "ggc.h"
|
||
#include "coverage.h"
|
||
#include "langhooks.h"
|
||
#include "hashtab.h"
|
||
#include "tree-iterator.h"
|
||
#include "cgraph.h"
|
||
#include "tree-pass.h"
|
||
|
||
#include "gcov-io.c"
|
||
|
||
struct function_list
|
||
{
|
||
struct function_list *next; /* next function */
|
||
unsigned ident; /* function ident */
|
||
unsigned checksum; /* function checksum */
|
||
unsigned n_ctrs[GCOV_COUNTERS];/* number of counters. */
|
||
};
|
||
|
||
/* Counts information for a function. */
|
||
typedef struct counts_entry
|
||
{
|
||
/* We hash by */
|
||
unsigned ident;
|
||
unsigned ctr;
|
||
|
||
/* Store */
|
||
unsigned checksum;
|
||
gcov_type *counts;
|
||
struct gcov_ctr_summary summary;
|
||
|
||
/* Workspace */
|
||
struct counts_entry *chain;
|
||
|
||
} counts_entry_t;
|
||
|
||
static struct function_list *functions_head = 0;
|
||
static struct function_list **functions_tail = &functions_head;
|
||
static unsigned no_coverage = 0;
|
||
|
||
/* Cumulative counter information for whole program. */
|
||
static unsigned prg_ctr_mask; /* Mask of counter types generated. */
|
||
static unsigned prg_n_ctrs[GCOV_COUNTERS]; /* Total counters allocated. */
|
||
|
||
/* Counter information for current function. */
|
||
static unsigned fn_ctr_mask; /* Mask of counters used. */
|
||
static unsigned fn_n_ctrs[GCOV_COUNTERS]; /* Counters allocated. */
|
||
static unsigned fn_b_ctrs[GCOV_COUNTERS]; /* Allocation base. */
|
||
|
||
/* Name of the output file for coverage output file. */
|
||
static char *bbg_file_name;
|
||
static unsigned bbg_file_opened;
|
||
static int bbg_function_announced;
|
||
|
||
/* Name of the count data file. */
|
||
static char *da_file_name;
|
||
|
||
/* Hash table of count data. */
|
||
static htab_t counts_hash = NULL;
|
||
|
||
/* Trees representing the counter table arrays. */
|
||
static GTY(()) tree tree_ctr_tables[GCOV_COUNTERS];
|
||
|
||
/* The names of the counter tables. Not used if we're
|
||
generating counters at tree level. */
|
||
static GTY(()) rtx ctr_labels[GCOV_COUNTERS];
|
||
|
||
/* The names of merge functions for counters. */
|
||
static const char *const ctr_merge_functions[GCOV_COUNTERS] = GCOV_MERGE_FUNCTIONS;
|
||
static const char *const ctr_names[GCOV_COUNTERS] = GCOV_COUNTER_NAMES;
|
||
|
||
/* Forward declarations. */
|
||
static hashval_t htab_counts_entry_hash (const void *);
|
||
static int htab_counts_entry_eq (const void *, const void *);
|
||
static void htab_counts_entry_del (void *);
|
||
static void read_counts_file (void);
|
||
static unsigned compute_checksum (void);
|
||
static unsigned coverage_checksum_string (unsigned, const char *);
|
||
static tree build_fn_info_type (unsigned);
|
||
static tree build_fn_info_value (const struct function_list *, tree);
|
||
static tree build_ctr_info_type (void);
|
||
static tree build_ctr_info_value (unsigned, tree);
|
||
static tree build_gcov_info (void);
|
||
static void create_coverage (void);
|
||
|
||
/* Return the type node for gcov_type. */
|
||
|
||
tree
|
||
get_gcov_type (void)
|
||
{
|
||
return lang_hooks.types.type_for_size (GCOV_TYPE_SIZE, false);
|
||
}
|
||
|
||
/* Return the type node for gcov_unsigned_t. */
|
||
|
||
static tree
|
||
get_gcov_unsigned_t (void)
|
||
{
|
||
return lang_hooks.types.type_for_size (32, true);
|
||
}
|
||
|
||
static hashval_t
|
||
htab_counts_entry_hash (const void *of)
|
||
{
|
||
const counts_entry_t *const entry = (const counts_entry_t *) of;
|
||
|
||
return entry->ident * GCOV_COUNTERS + entry->ctr;
|
||
}
|
||
|
||
static int
|
||
htab_counts_entry_eq (const void *of1, const void *of2)
|
||
{
|
||
const counts_entry_t *const entry1 = (const counts_entry_t *) of1;
|
||
const counts_entry_t *const entry2 = (const counts_entry_t *) of2;
|
||
|
||
return entry1->ident == entry2->ident && entry1->ctr == entry2->ctr;
|
||
}
|
||
|
||
static void
|
||
htab_counts_entry_del (void *of)
|
||
{
|
||
counts_entry_t *const entry = (counts_entry_t *) of;
|
||
|
||
free (entry->counts);
|
||
free (entry);
|
||
}
|
||
|
||
/* Read in the counts file, if available. */
|
||
|
||
static void
|
||
read_counts_file (void)
|
||
{
|
||
gcov_unsigned_t fn_ident = 0;
|
||
gcov_unsigned_t checksum = -1;
|
||
counts_entry_t *summaried = NULL;
|
||
unsigned seen_summary = 0;
|
||
gcov_unsigned_t tag;
|
||
int is_error = 0;
|
||
|
||
if (!gcov_open (da_file_name, 1))
|
||
return;
|
||
|
||
if (!gcov_magic (gcov_read_unsigned (), GCOV_DATA_MAGIC))
|
||
{
|
||
warning (0, "%qs is not a gcov data file", da_file_name);
|
||
gcov_close ();
|
||
return;
|
||
}
|
||
else if ((tag = gcov_read_unsigned ()) != GCOV_VERSION)
|
||
{
|
||
char v[4], e[4];
|
||
|
||
GCOV_UNSIGNED2STRING (v, tag);
|
||
GCOV_UNSIGNED2STRING (e, GCOV_VERSION);
|
||
|
||
warning (0, "%qs is version %q.*s, expected version %q.*s",
|
||
da_file_name, 4, v, 4, e);
|
||
gcov_close ();
|
||
return;
|
||
}
|
||
|
||
/* Read and discard the stamp. */
|
||
gcov_read_unsigned ();
|
||
|
||
counts_hash = htab_create (10,
|
||
htab_counts_entry_hash, htab_counts_entry_eq,
|
||
htab_counts_entry_del);
|
||
while ((tag = gcov_read_unsigned ()))
|
||
{
|
||
gcov_unsigned_t length;
|
||
gcov_position_t offset;
|
||
|
||
length = gcov_read_unsigned ();
|
||
offset = gcov_position ();
|
||
if (tag == GCOV_TAG_FUNCTION)
|
||
{
|
||
fn_ident = gcov_read_unsigned ();
|
||
checksum = gcov_read_unsigned ();
|
||
if (seen_summary)
|
||
{
|
||
/* We have already seen a summary, this means that this
|
||
new function begins a new set of program runs. We
|
||
must unlink the summaried chain. */
|
||
counts_entry_t *entry, *chain;
|
||
|
||
for (entry = summaried; entry; entry = chain)
|
||
{
|
||
chain = entry->chain;
|
||
entry->chain = NULL;
|
||
}
|
||
summaried = NULL;
|
||
seen_summary = 0;
|
||
}
|
||
}
|
||
else if (tag == GCOV_TAG_PROGRAM_SUMMARY)
|
||
{
|
||
counts_entry_t *entry;
|
||
struct gcov_summary summary;
|
||
|
||
gcov_read_summary (&summary);
|
||
seen_summary = 1;
|
||
for (entry = summaried; entry; entry = entry->chain)
|
||
{
|
||
struct gcov_ctr_summary *csum = &summary.ctrs[entry->ctr];
|
||
|
||
entry->summary.runs += csum->runs;
|
||
entry->summary.sum_all += csum->sum_all;
|
||
if (entry->summary.run_max < csum->run_max)
|
||
entry->summary.run_max = csum->run_max;
|
||
entry->summary.sum_max += csum->sum_max;
|
||
}
|
||
}
|
||
else if (GCOV_TAG_IS_COUNTER (tag) && fn_ident)
|
||
{
|
||
counts_entry_t **slot, *entry, elt;
|
||
unsigned n_counts = GCOV_TAG_COUNTER_NUM (length);
|
||
unsigned ix;
|
||
|
||
elt.ident = fn_ident;
|
||
elt.ctr = GCOV_COUNTER_FOR_TAG (tag);
|
||
|
||
slot = (counts_entry_t **) htab_find_slot
|
||
(counts_hash, &elt, INSERT);
|
||
entry = *slot;
|
||
if (!entry)
|
||
{
|
||
*slot = entry = XCNEW (counts_entry_t);
|
||
entry->ident = elt.ident;
|
||
entry->ctr = elt.ctr;
|
||
entry->checksum = checksum;
|
||
entry->summary.num = n_counts;
|
||
entry->counts = XCNEWVEC (gcov_type, n_counts);
|
||
}
|
||
else if (entry->checksum != checksum)
|
||
{
|
||
error ("coverage mismatch for function %u while reading execution counters",
|
||
fn_ident);
|
||
error ("checksum is %x instead of %x", entry->checksum, checksum);
|
||
htab_delete (counts_hash);
|
||
break;
|
||
}
|
||
else if (entry->summary.num != n_counts)
|
||
{
|
||
error ("coverage mismatch for function %u while reading execution counters",
|
||
fn_ident);
|
||
error ("number of counters is %d instead of %d", entry->summary.num, n_counts);
|
||
htab_delete (counts_hash);
|
||
break;
|
||
}
|
||
else if (elt.ctr >= GCOV_COUNTERS_SUMMABLE)
|
||
{
|
||
error ("cannot merge separate %s counters for function %u",
|
||
ctr_names[elt.ctr], fn_ident);
|
||
goto skip_merge;
|
||
}
|
||
|
||
if (elt.ctr < GCOV_COUNTERS_SUMMABLE
|
||
/* This should always be true for a just allocated entry,
|
||
and always false for an existing one. Check this way, in
|
||
case the gcov file is corrupt. */
|
||
&& (!entry->chain || summaried != entry))
|
||
{
|
||
entry->chain = summaried;
|
||
summaried = entry;
|
||
}
|
||
for (ix = 0; ix != n_counts; ix++)
|
||
entry->counts[ix] += gcov_read_counter ();
|
||
skip_merge:;
|
||
}
|
||
gcov_sync (offset, length);
|
||
if ((is_error = gcov_is_error ()))
|
||
{
|
||
error (is_error < 0 ? "%qs has overflowed" : "%qs is corrupted",
|
||
da_file_name);
|
||
htab_delete (counts_hash);
|
||
break;
|
||
}
|
||
}
|
||
|
||
gcov_close ();
|
||
}
|
||
|
||
/* Returns the counters for a particular tag. */
|
||
|
||
gcov_type *
|
||
get_coverage_counts (unsigned counter, unsigned expected,
|
||
const struct gcov_ctr_summary **summary)
|
||
{
|
||
counts_entry_t *entry, elt;
|
||
gcov_unsigned_t checksum = -1;
|
||
|
||
/* No hash table, no counts. */
|
||
if (!counts_hash)
|
||
{
|
||
static int warned = 0;
|
||
|
||
if (!warned++)
|
||
inform (input_location, (flag_guess_branch_prob
|
||
? "file %s not found, execution counts estimated"
|
||
: "file %s not found, execution counts assumed to be zero"),
|
||
da_file_name);
|
||
return NULL;
|
||
}
|
||
|
||
elt.ident = current_function_funcdef_no + 1;
|
||
elt.ctr = counter;
|
||
entry = (counts_entry_t *) htab_find (counts_hash, &elt);
|
||
if (!entry)
|
||
{
|
||
warning (0, "no coverage for function %qs found", IDENTIFIER_POINTER
|
||
(DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
return NULL;
|
||
}
|
||
|
||
checksum = compute_checksum ();
|
||
if (entry->checksum != checksum
|
||
|| entry->summary.num != expected)
|
||
{
|
||
static int warned = 0;
|
||
const char *id = IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME
|
||
(current_function_decl));
|
||
|
||
if (warn_coverage_mismatch)
|
||
warning (OPT_Wcoverage_mismatch, "coverage mismatch for function "
|
||
"%qs while reading counter %qs", id, ctr_names[counter]);
|
||
else
|
||
error ("coverage mismatch for function %qs while reading counter %qs",
|
||
id, ctr_names[counter]);
|
||
|
||
if (!inhibit_warnings)
|
||
{
|
||
if (entry->checksum != checksum)
|
||
inform (input_location, "checksum is %x instead of %x", entry->checksum, checksum);
|
||
else
|
||
inform (input_location, "number of counters is %d instead of %d",
|
||
entry->summary.num, expected);
|
||
}
|
||
|
||
if (warn_coverage_mismatch
|
||
&& !inhibit_warnings
|
||
&& !warned++)
|
||
{
|
||
inform (input_location, "coverage mismatch ignored due to -Wcoverage-mismatch");
|
||
inform (input_location, flag_guess_branch_prob
|
||
? "execution counts estimated"
|
||
: "execution counts assumed to be zero");
|
||
if (!flag_guess_branch_prob)
|
||
inform (input_location, "this can result in poorly optimized code");
|
||
}
|
||
|
||
return NULL;
|
||
}
|
||
|
||
if (summary)
|
||
*summary = &entry->summary;
|
||
|
||
return entry->counts;
|
||
}
|
||
|
||
/* Allocate NUM counters of type COUNTER. Returns nonzero if the
|
||
allocation succeeded. */
|
||
|
||
int
|
||
coverage_counter_alloc (unsigned counter, unsigned num)
|
||
{
|
||
if (no_coverage)
|
||
return 0;
|
||
|
||
if (!num)
|
||
return 1;
|
||
|
||
if (!tree_ctr_tables[counter])
|
||
{
|
||
/* Generate and save a copy of this so it can be shared. Leave
|
||
the index type unspecified for now; it will be set after all
|
||
functions have been compiled. */
|
||
char buf[20];
|
||
tree gcov_type_node = get_gcov_type ();
|
||
tree gcov_type_array_type
|
||
= build_array_type (gcov_type_node, NULL_TREE);
|
||
tree_ctr_tables[counter]
|
||
= build_decl (VAR_DECL, NULL_TREE, gcov_type_array_type);
|
||
TREE_STATIC (tree_ctr_tables[counter]) = 1;
|
||
ASM_GENERATE_INTERNAL_LABEL (buf, "LPBX", counter + 1);
|
||
DECL_NAME (tree_ctr_tables[counter]) = get_identifier (buf);
|
||
DECL_ALIGN (tree_ctr_tables[counter]) = TYPE_ALIGN (gcov_type_node);
|
||
|
||
if (dump_file)
|
||
fprintf (dump_file, "Using data file %s\n", da_file_name);
|
||
}
|
||
fn_b_ctrs[counter] = fn_n_ctrs[counter];
|
||
fn_n_ctrs[counter] += num;
|
||
fn_ctr_mask |= 1 << counter;
|
||
return 1;
|
||
}
|
||
|
||
/* Generate a tree to access COUNTER NO. */
|
||
|
||
tree
|
||
tree_coverage_counter_ref (unsigned counter, unsigned no)
|
||
{
|
||
tree gcov_type_node = get_gcov_type ();
|
||
|
||
gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]);
|
||
no += prg_n_ctrs[counter] + fn_b_ctrs[counter];
|
||
|
||
/* "no" here is an array index, scaled to bytes later. */
|
||
return build4 (ARRAY_REF, gcov_type_node, tree_ctr_tables[counter],
|
||
build_int_cst (NULL_TREE, no), NULL, NULL);
|
||
}
|
||
|
||
/* Generate a tree to access the address of COUNTER NO. */
|
||
|
||
tree
|
||
tree_coverage_counter_addr (unsigned counter, unsigned no)
|
||
{
|
||
tree gcov_type_node = get_gcov_type ();
|
||
|
||
gcc_assert (no < fn_n_ctrs[counter] - fn_b_ctrs[counter]);
|
||
no += prg_n_ctrs[counter] + fn_b_ctrs[counter];
|
||
|
||
TREE_ADDRESSABLE (tree_ctr_tables[counter]) = 1;
|
||
|
||
/* "no" here is an array index, scaled to bytes later. */
|
||
return build_fold_addr_expr (build4 (ARRAY_REF, gcov_type_node,
|
||
tree_ctr_tables[counter],
|
||
build_int_cst (NULL_TREE, no),
|
||
NULL, NULL));
|
||
}
|
||
|
||
/* Generate a checksum for a string. CHKSUM is the current
|
||
checksum. */
|
||
|
||
static unsigned
|
||
coverage_checksum_string (unsigned chksum, const char *string)
|
||
{
|
||
int i;
|
||
char *dup = NULL;
|
||
|
||
/* Look for everything that looks if it were produced by
|
||
get_file_function_name and zero out the second part
|
||
that may result from flag_random_seed. This is not critical
|
||
as the checksums are used only for sanity checking. */
|
||
for (i = 0; string[i]; i++)
|
||
{
|
||
int offset = 0;
|
||
if (!strncmp (string + i, "_GLOBAL__N_", 11))
|
||
offset = 11;
|
||
if (!strncmp (string + i, "_GLOBAL__", 9))
|
||
offset = 9;
|
||
|
||
/* C++ namespaces do have scheme:
|
||
_GLOBAL__N_<filename>_<wrongmagicnumber>_<magicnumber>functionname
|
||
since filename might contain extra underscores there seems
|
||
to be no better chance then walk all possible offsets looking
|
||
for magicnumber. */
|
||
if (offset)
|
||
{
|
||
for (i = i + offset; string[i]; i++)
|
||
if (string[i]=='_')
|
||
{
|
||
int y;
|
||
|
||
for (y = 1; y < 9; y++)
|
||
if (!(string[i + y] >= '0' && string[i + y] <= '9')
|
||
&& !(string[i + y] >= 'A' && string[i + y] <= 'F'))
|
||
break;
|
||
if (y != 9 || string[i + 9] != '_')
|
||
continue;
|
||
for (y = 10; y < 18; y++)
|
||
if (!(string[i + y] >= '0' && string[i + y] <= '9')
|
||
&& !(string[i + y] >= 'A' && string[i + y] <= 'F'))
|
||
break;
|
||
if (y != 18)
|
||
continue;
|
||
if (!dup)
|
||
string = dup = xstrdup (string);
|
||
for (y = 10; y < 18; y++)
|
||
dup[i + y] = '0';
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
|
||
chksum = crc32_string (chksum, string);
|
||
if (dup)
|
||
free (dup);
|
||
|
||
return chksum;
|
||
}
|
||
|
||
/* Compute checksum for the current function. We generate a CRC32. */
|
||
|
||
static unsigned
|
||
compute_checksum (void)
|
||
{
|
||
expanded_location xloc
|
||
= expand_location (DECL_SOURCE_LOCATION (current_function_decl));
|
||
unsigned chksum = xloc.line;
|
||
|
||
chksum = coverage_checksum_string (chksum, xloc.file);
|
||
chksum = coverage_checksum_string
|
||
(chksum, IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
|
||
return chksum;
|
||
}
|
||
|
||
/* Begin output to the graph file for the current function.
|
||
Opens the output file, if not already done. Writes the
|
||
function header, if not already done. Returns nonzero if data
|
||
should be output. */
|
||
|
||
int
|
||
coverage_begin_output (void)
|
||
{
|
||
/* We don't need to output .gcno file unless we're under -ftest-coverage
|
||
(e.g. -fprofile-arcs/generate/use don't need .gcno to work). */
|
||
if (no_coverage || !flag_test_coverage)
|
||
return 0;
|
||
|
||
if (!bbg_function_announced)
|
||
{
|
||
expanded_location xloc
|
||
= expand_location (DECL_SOURCE_LOCATION (current_function_decl));
|
||
unsigned long offset;
|
||
|
||
if (!bbg_file_opened)
|
||
{
|
||
if (!gcov_open (bbg_file_name, -1))
|
||
error ("cannot open %s", bbg_file_name);
|
||
else
|
||
{
|
||
gcov_write_unsigned (GCOV_NOTE_MAGIC);
|
||
gcov_write_unsigned (GCOV_VERSION);
|
||
gcov_write_unsigned (local_tick);
|
||
}
|
||
bbg_file_opened = 1;
|
||
}
|
||
|
||
/* Announce function */
|
||
offset = gcov_write_tag (GCOV_TAG_FUNCTION);
|
||
gcov_write_unsigned (current_function_funcdef_no + 1);
|
||
gcov_write_unsigned (compute_checksum ());
|
||
gcov_write_string (IDENTIFIER_POINTER
|
||
(DECL_ASSEMBLER_NAME (current_function_decl)));
|
||
gcov_write_string (xloc.file);
|
||
gcov_write_unsigned (xloc.line);
|
||
gcov_write_length (offset);
|
||
|
||
bbg_function_announced = 1;
|
||
}
|
||
return !gcov_is_error ();
|
||
}
|
||
|
||
/* Finish coverage data for the current function. Verify no output
|
||
error has occurred. Save function coverage counts. */
|
||
|
||
void
|
||
coverage_end_function (void)
|
||
{
|
||
unsigned i;
|
||
|
||
if (bbg_file_opened > 1 && gcov_is_error ())
|
||
{
|
||
warning (0, "error writing %qs", bbg_file_name);
|
||
bbg_file_opened = -1;
|
||
}
|
||
|
||
if (fn_ctr_mask)
|
||
{
|
||
struct function_list *item;
|
||
|
||
item = XNEW (struct function_list);
|
||
|
||
*functions_tail = item;
|
||
functions_tail = &item->next;
|
||
|
||
item->next = 0;
|
||
item->ident = current_function_funcdef_no + 1;
|
||
item->checksum = compute_checksum ();
|
||
for (i = 0; i != GCOV_COUNTERS; i++)
|
||
{
|
||
item->n_ctrs[i] = fn_n_ctrs[i];
|
||
prg_n_ctrs[i] += fn_n_ctrs[i];
|
||
fn_n_ctrs[i] = fn_b_ctrs[i] = 0;
|
||
}
|
||
prg_ctr_mask |= fn_ctr_mask;
|
||
fn_ctr_mask = 0;
|
||
}
|
||
bbg_function_announced = 0;
|
||
}
|
||
|
||
/* Creates the gcov_fn_info RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_fn_info_type (unsigned int counters)
|
||
{
|
||
tree type = lang_hooks.types.make_type (RECORD_TYPE);
|
||
tree field, fields;
|
||
tree array_type;
|
||
|
||
/* ident */
|
||
fields = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
|
||
/* checksum */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
array_type = build_int_cst (NULL_TREE, counters - 1);
|
||
array_type = build_index_type (array_type);
|
||
array_type = build_array_type (get_gcov_unsigned_t (), array_type);
|
||
|
||
/* counters */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, array_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
finish_builtin_struct (type, "__gcov_fn_info", fields, NULL_TREE);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Creates a CONSTRUCTOR for a gcov_fn_info. FUNCTION is
|
||
the function being processed and TYPE is the gcov_fn_info
|
||
RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_fn_info_value (const struct function_list *function, tree type)
|
||
{
|
||
tree value = NULL_TREE;
|
||
tree fields = TYPE_FIELDS (type);
|
||
unsigned ix;
|
||
tree array_value = NULL_TREE;
|
||
|
||
/* ident */
|
||
value = tree_cons (fields, build_int_cstu (get_gcov_unsigned_t (),
|
||
function->ident), value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
/* checksum */
|
||
value = tree_cons (fields, build_int_cstu (get_gcov_unsigned_t (),
|
||
function->checksum), value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
/* counters */
|
||
for (ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
{
|
||
tree counters = build_int_cstu (get_gcov_unsigned_t (),
|
||
function->n_ctrs[ix]);
|
||
|
||
array_value = tree_cons (NULL_TREE, counters, array_value);
|
||
}
|
||
|
||
/* FIXME: use build_constructor directly. */
|
||
array_value = build_constructor_from_list (TREE_TYPE (fields),
|
||
nreverse (array_value));
|
||
value = tree_cons (fields, array_value, value);
|
||
|
||
/* FIXME: use build_constructor directly. */
|
||
value = build_constructor_from_list (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Creates the gcov_ctr_info RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_ctr_info_type (void)
|
||
{
|
||
tree type = lang_hooks.types.make_type (RECORD_TYPE);
|
||
tree field, fields = NULL_TREE;
|
||
tree gcov_ptr_type = build_pointer_type (get_gcov_type ());
|
||
tree gcov_merge_fn_type;
|
||
|
||
/* counters */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
/* values */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, gcov_ptr_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
/* merge */
|
||
gcov_merge_fn_type =
|
||
build_function_type_list (void_type_node,
|
||
gcov_ptr_type, get_gcov_unsigned_t (),
|
||
NULL_TREE);
|
||
field = build_decl (FIELD_DECL, NULL_TREE,
|
||
build_pointer_type (gcov_merge_fn_type));
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
|
||
finish_builtin_struct (type, "__gcov_ctr_info", fields, NULL_TREE);
|
||
|
||
return type;
|
||
}
|
||
|
||
/* Creates a CONSTRUCTOR for a gcov_ctr_info. COUNTER is
|
||
the counter being processed and TYPE is the gcov_ctr_info
|
||
RECORD_TYPE. */
|
||
|
||
static tree
|
||
build_ctr_info_value (unsigned int counter, tree type)
|
||
{
|
||
tree value = NULL_TREE;
|
||
tree fields = TYPE_FIELDS (type);
|
||
tree fn;
|
||
|
||
/* counters */
|
||
value = tree_cons (fields,
|
||
build_int_cstu (get_gcov_unsigned_t (),
|
||
prg_n_ctrs[counter]),
|
||
value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
if (prg_n_ctrs[counter])
|
||
{
|
||
tree array_type;
|
||
|
||
array_type = build_int_cstu (get_gcov_unsigned_t (),
|
||
prg_n_ctrs[counter] - 1);
|
||
array_type = build_index_type (array_type);
|
||
array_type = build_array_type (TREE_TYPE (TREE_TYPE (fields)),
|
||
array_type);
|
||
|
||
TREE_TYPE (tree_ctr_tables[counter]) = array_type;
|
||
DECL_SIZE (tree_ctr_tables[counter]) = TYPE_SIZE (array_type);
|
||
DECL_SIZE_UNIT (tree_ctr_tables[counter]) = TYPE_SIZE_UNIT (array_type);
|
||
assemble_variable (tree_ctr_tables[counter], 0, 0, 0);
|
||
|
||
value = tree_cons (fields,
|
||
build1 (ADDR_EXPR, TREE_TYPE (fields),
|
||
tree_ctr_tables[counter]),
|
||
value);
|
||
}
|
||
else
|
||
value = tree_cons (fields, null_pointer_node, value);
|
||
fields = TREE_CHAIN (fields);
|
||
|
||
fn = build_decl (FUNCTION_DECL,
|
||
get_identifier (ctr_merge_functions[counter]),
|
||
TREE_TYPE (TREE_TYPE (fields)));
|
||
DECL_EXTERNAL (fn) = 1;
|
||
TREE_PUBLIC (fn) = 1;
|
||
DECL_ARTIFICIAL (fn) = 1;
|
||
TREE_NOTHROW (fn) = 1;
|
||
value = tree_cons (fields,
|
||
build1 (ADDR_EXPR, TREE_TYPE (fields), fn),
|
||
value);
|
||
|
||
/* FIXME: use build_constructor directly. */
|
||
value = build_constructor_from_list (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Creates the gcov_info RECORD_TYPE and initializer for it. Returns a
|
||
CONSTRUCTOR. */
|
||
|
||
static tree
|
||
build_gcov_info (void)
|
||
{
|
||
unsigned n_ctr_types, ix;
|
||
tree type, const_type;
|
||
tree fn_info_type, fn_info_value = NULL_TREE;
|
||
tree fn_info_ptr_type;
|
||
tree ctr_info_type, ctr_info_ary_type, ctr_info_value = NULL_TREE;
|
||
tree field, fields = NULL_TREE;
|
||
tree value = NULL_TREE;
|
||
tree filename_string;
|
||
int da_file_name_len;
|
||
unsigned n_fns;
|
||
const struct function_list *fn;
|
||
tree string_type;
|
||
|
||
/* Count the number of active counters. */
|
||
for (n_ctr_types = 0, ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
n_ctr_types++;
|
||
|
||
type = lang_hooks.types.make_type (RECORD_TYPE);
|
||
const_type = build_qualified_type (type, TYPE_QUAL_CONST);
|
||
|
||
/* Version ident */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, build_int_cstu (TREE_TYPE (field), GCOV_VERSION),
|
||
value);
|
||
|
||
/* next -- NULL */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, build_pointer_type (const_type));
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, null_pointer_node, value);
|
||
|
||
/* stamp */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, build_int_cstu (TREE_TYPE (field), local_tick),
|
||
value);
|
||
|
||
/* Filename */
|
||
string_type = build_pointer_type (build_qualified_type (char_type_node,
|
||
TYPE_QUAL_CONST));
|
||
field = build_decl (FIELD_DECL, NULL_TREE, string_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
da_file_name_len = strlen (da_file_name);
|
||
filename_string = build_string (da_file_name_len + 1, da_file_name);
|
||
TREE_TYPE (filename_string) = build_array_type
|
||
(char_type_node, build_index_type
|
||
(build_int_cst (NULL_TREE, da_file_name_len)));
|
||
value = tree_cons (field, build1 (ADDR_EXPR, string_type, filename_string),
|
||
value);
|
||
|
||
/* Build the fn_info type and initializer. */
|
||
fn_info_type = build_fn_info_type (n_ctr_types);
|
||
fn_info_ptr_type = build_pointer_type (build_qualified_type
|
||
(fn_info_type, TYPE_QUAL_CONST));
|
||
for (fn = functions_head, n_fns = 0; fn; fn = fn->next, n_fns++)
|
||
fn_info_value = tree_cons (NULL_TREE,
|
||
build_fn_info_value (fn, fn_info_type),
|
||
fn_info_value);
|
||
if (n_fns)
|
||
{
|
||
tree array_type;
|
||
|
||
array_type = build_index_type (build_int_cst (NULL_TREE, n_fns - 1));
|
||
array_type = build_array_type (fn_info_type, array_type);
|
||
|
||
/* FIXME: use build_constructor directly. */
|
||
fn_info_value = build_constructor_from_list (array_type,
|
||
nreverse (fn_info_value));
|
||
fn_info_value = build1 (ADDR_EXPR, fn_info_ptr_type, fn_info_value);
|
||
}
|
||
else
|
||
fn_info_value = null_pointer_node;
|
||
|
||
/* number of functions */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field,
|
||
build_int_cstu (get_gcov_unsigned_t (), n_fns),
|
||
value);
|
||
|
||
/* fn_info table */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, fn_info_ptr_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, fn_info_value, value);
|
||
|
||
/* counter_mask */
|
||
field = build_decl (FIELD_DECL, NULL_TREE, get_gcov_unsigned_t ());
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field,
|
||
build_int_cstu (get_gcov_unsigned_t (), prg_ctr_mask),
|
||
value);
|
||
|
||
/* counters */
|
||
ctr_info_type = build_ctr_info_type ();
|
||
ctr_info_ary_type = build_index_type (build_int_cst (NULL_TREE,
|
||
n_ctr_types));
|
||
ctr_info_ary_type = build_array_type (ctr_info_type, ctr_info_ary_type);
|
||
for (ix = 0; ix != GCOV_COUNTERS; ix++)
|
||
if (prg_ctr_mask & (1 << ix))
|
||
ctr_info_value = tree_cons (NULL_TREE,
|
||
build_ctr_info_value (ix, ctr_info_type),
|
||
ctr_info_value);
|
||
/* FIXME: use build_constructor directly. */
|
||
ctr_info_value = build_constructor_from_list (ctr_info_ary_type,
|
||
nreverse (ctr_info_value));
|
||
|
||
field = build_decl (FIELD_DECL, NULL_TREE, ctr_info_ary_type);
|
||
TREE_CHAIN (field) = fields;
|
||
fields = field;
|
||
value = tree_cons (field, ctr_info_value, value);
|
||
|
||
finish_builtin_struct (type, "__gcov_info", fields, NULL_TREE);
|
||
|
||
/* FIXME: use build_constructor directly. */
|
||
value = build_constructor_from_list (type, nreverse (value));
|
||
|
||
return value;
|
||
}
|
||
|
||
/* Write out the structure which libgcov uses to locate all the
|
||
counters. The structures used here must match those defined in
|
||
gcov-io.h. Write out the constructor to call __gcov_init. */
|
||
|
||
static void
|
||
create_coverage (void)
|
||
{
|
||
tree gcov_info, gcov_init, body, t;
|
||
char name_buf[32];
|
||
|
||
no_coverage = 1; /* Disable any further coverage. */
|
||
|
||
if (!prg_ctr_mask)
|
||
return;
|
||
|
||
t = build_gcov_info ();
|
||
|
||
gcov_info = build_decl (VAR_DECL, NULL_TREE, TREE_TYPE (t));
|
||
TREE_STATIC (gcov_info) = 1;
|
||
ASM_GENERATE_INTERNAL_LABEL (name_buf, "LPBX", 0);
|
||
DECL_NAME (gcov_info) = get_identifier (name_buf);
|
||
DECL_INITIAL (gcov_info) = t;
|
||
|
||
/* Build structure. */
|
||
assemble_variable (gcov_info, 0, 0, 0);
|
||
|
||
/* Build a decl for __gcov_init. */
|
||
t = build_pointer_type (TREE_TYPE (gcov_info));
|
||
t = build_function_type_list (void_type_node, t, NULL);
|
||
t = build_decl (FUNCTION_DECL, get_identifier ("__gcov_init"), t);
|
||
TREE_PUBLIC (t) = 1;
|
||
DECL_EXTERNAL (t) = 1;
|
||
gcov_init = t;
|
||
|
||
/* Generate a call to __gcov_init(&gcov_info). */
|
||
body = NULL;
|
||
t = build_fold_addr_expr (gcov_info);
|
||
t = build_call_expr (gcov_init, 1, t);
|
||
append_to_statement_list (t, &body);
|
||
|
||
/* Generate a constructor to run it. */
|
||
cgraph_build_static_cdtor ('I', body, DEFAULT_INIT_PRIORITY);
|
||
}
|
||
|
||
/* Perform file-level initialization. Read in data file, generate name
|
||
of graph file. */
|
||
|
||
void
|
||
coverage_init (const char *filename)
|
||
{
|
||
int len = strlen (filename);
|
||
/* + 1 for extra '/', in case prefix doesn't end with /. */
|
||
int prefix_len;
|
||
|
||
if (profile_data_prefix == 0 && filename[0] != '/')
|
||
profile_data_prefix = getpwd ();
|
||
|
||
prefix_len = (profile_data_prefix) ? strlen (profile_data_prefix) + 1 : 0;
|
||
|
||
/* Name of da file. */
|
||
da_file_name = XNEWVEC (char, len + strlen (GCOV_DATA_SUFFIX)
|
||
+ prefix_len + 1);
|
||
|
||
if (profile_data_prefix)
|
||
{
|
||
strcpy (da_file_name, profile_data_prefix);
|
||
da_file_name[prefix_len - 1] = '/';
|
||
da_file_name[prefix_len] = 0;
|
||
}
|
||
else
|
||
da_file_name[0] = 0;
|
||
strcat (da_file_name, filename);
|
||
strcat (da_file_name, GCOV_DATA_SUFFIX);
|
||
|
||
/* Name of bbg file. */
|
||
bbg_file_name = XNEWVEC (char, len + strlen (GCOV_NOTE_SUFFIX) + 1);
|
||
strcpy (bbg_file_name, filename);
|
||
strcat (bbg_file_name, GCOV_NOTE_SUFFIX);
|
||
|
||
if (flag_profile_use)
|
||
read_counts_file ();
|
||
}
|
||
|
||
/* Performs file-level cleanup. Close graph file, generate coverage
|
||
variables and constructor. */
|
||
|
||
void
|
||
coverage_finish (void)
|
||
{
|
||
create_coverage ();
|
||
if (bbg_file_opened)
|
||
{
|
||
int error = gcov_close ();
|
||
|
||
if (error)
|
||
unlink (bbg_file_name);
|
||
if (!local_tick)
|
||
/* Only remove the da file, if we cannot stamp it. If we can
|
||
stamp it, libgcov will DTRT. */
|
||
unlink (da_file_name);
|
||
}
|
||
}
|
||
|
||
#include "gt-coverage.h"
|