From ec3e1f411c332cbc2f2bc7ab7e2175ebf918b37a Mon Sep 17 00:00:00 2001
From: Peter Oberparleiter <oberpar@linux.ibm.com>
Date: Fri, 24 May 2019 16:56:52 +0200
Subject: [PATCH 1/2] geninfo: Add intermediate text format support

This change adds support for parsing the output of gcov's intermediate
text file format as implemented by GCC versions 5 to 8.  The use of the
gcov intermediate format should increase processing speed. It also
provides branch coverage data when using the --initial command line
option.

Users can control whether geninfo uses the intermediate format via the
geninfo_intermediate configuration file option. Valid values are:

     0: Use normal text format
     1: Use intermediate format
  auto: Use intermediate format if available. This is the default.

Signed-off-by: Peter Oberparleiter <oberpar@linux.ibm.com>
---
 bin/geninfo  | 567 ++++++++++++++++++++++++++++++++++++++++++++-------
 lcovrc       |   3 +
 man/lcovrc.5 |  24 +++
 3 files changed, 521 insertions(+), 73 deletions(-)

Upstream-Status: Backport
Download URL: https://github.com/linux-test-project/lcov/commit/ebfeb3e179e450c69c3532f98cd5ea1fbf6ccba7

diff --git a/bin/geninfo b/bin/geninfo
index f41eaec..0276666 100755
--- a/bin/geninfo
+++ b/bin/geninfo
@@ -54,6 +54,8 @@ use warnings;
 use File::Basename; 
 use File::Spec::Functions qw /abs2rel catdir file_name_is_absolute splitdir
 			      splitpath catpath/;
+use File::Temp qw(tempfile tempdir);
+use File::Copy qw(copy);
 use Getopt::Long;
 use Digest::MD5 qw(md5_base64);
 use Cwd qw/abs_path/;
@@ -163,13 +165,13 @@ sub solve_relative_path($$);
 sub read_gcov_header($);
 sub read_gcov_file($);
 sub info(@);
+sub process_intermediate($$$);
 sub map_llvm_version($);
 sub version_to_str($);
 sub get_gcov_version();
 sub system_no_output($@);
 sub read_config($);
 sub apply_config($);
-sub get_exclusion_data($);
 sub apply_exclusion_data($$);
 sub process_graphfile($$);
 sub filter_fn_name($);
@@ -264,6 +266,8 @@ our $gcno_split_crc;
 our $func_coverage = 1;
 our $br_coverage = 0;
 our $rc_auto_base = 1;
+our $rc_intermediate = "auto";
+our $intermediate;
 our $excl_line = "LCOV_EXCL_LINE";
 our $excl_br_line = "LCOV_EXCL_BR_LINE";
 
@@ -331,6 +335,7 @@ if ($config || %opt_rc)
 		"geninfo_compat"		=> \$opt_compat,
 		"geninfo_adjust_src_path"	=> \$rc_adjust_src_path,
 		"geninfo_auto_base"		=> \$rc_auto_base,
+		"geninfo_intermediate"		=> \$rc_intermediate,
 		"lcov_function_coverage"	=> \$func_coverage,
 		"lcov_branch_coverage"		=> \$br_coverage,
 		"lcov_excl_line"		=> \$excl_line,
@@ -460,15 +465,38 @@ if (system_no_output(3, $gcov_tool, "--help") == -1)
 }
 
 ($gcov_version, $gcov_version_string) = get_gcov_version();
+$gcov_caps = get_gcov_capabilities();
+
+# Determine intermediate mode
+if ($rc_intermediate eq "0") {
+	$intermediate = 0;
+} elsif ($rc_intermediate eq "1") {
+	$intermediate = 1;
+} elsif (lc($rc_intermediate) eq "auto") {
+	# Use intermediate format if supported by gcov
+	$intermediate = $gcov_caps->{'intermediate-format'} ? 1 : 0;
+} else {
+	die("ERROR: invalid value for geninfo_intermediate: ".
+	    "'$rc_intermediate'\n");
+}
+
+if ($intermediate) {
+	info("Using intermediate gcov format\n");
+	if ($opt_derive_func_data) {
+		warn("WARNING: --derive-func-data is not compatible with ".
+		     "intermediate format - ignoring\n");
+		$opt_derive_func_data = 0;
+	}
+}
 
 # Determine gcov options
-$gcov_caps = get_gcov_capabilities();
 push(@gcov_options, "-b") if ($gcov_caps->{'branch-probabilities'} &&
 			      ($br_coverage || $func_coverage));
 push(@gcov_options, "-c") if ($gcov_caps->{'branch-counts'} &&
 			      $br_coverage);
 push(@gcov_options, "-a") if ($gcov_caps->{'all-blocks'} &&
-			      $opt_gcov_all_blocks && $br_coverage);
+			      $opt_gcov_all_blocks && $br_coverage &&
+			      !$intermediate);
 if ($gcov_caps->{'hash-filenames'})
 {
 	push(@gcov_options, "-x");
@@ -599,7 +627,7 @@ foreach my $entry (@data_directory) {
 	gen_info($entry);
 }
 
-if ($initial && $br_coverage) {
+if ($initial && $br_coverage && !$intermediate) {
 	warn("Note: --initial does not generate branch coverage ".
 	     "data\n");
 }
@@ -768,6 +796,7 @@ sub gen_info($)
 	my $prefix;
 	my $type;
 	my $ext;
+	my $tempdir;
 
 	if ($initial) {
 		$type = "graph";
@@ -798,16 +827,22 @@ sub gen_info($)
 		$prefix = "";
 	}
 
+	$tempdir = tempdir(CLEANUP => 1);
+
 	# Process all files in list
 	foreach $file (@file_list) {
 		# Process file
-		if ($initial) {
+		if ($intermediate) {
+			process_intermediate($file, $prefix, $tempdir);
+		} elsif ($initial) {
 			process_graphfile($file, $prefix);
 		} else {
 			process_dafile($file, $prefix);
 		}
 	}
 
+	unlink($tempdir);
+
 	# Report whether files were excluded.
 	if (%excluded_files) {
 		info("Excluded data for %d files due to include/exclude options\n",
@@ -1058,10 +1093,12 @@ sub process_dafile($$)
 
 	# Try to find base directory automatically if requested by user
 	if ($rc_auto_base) {
-		$base_dir = find_base_from_graph($base_dir, $instr, $graph);
+		$base_dir = find_base_from_source($base_dir,
+			[ keys(%{$instr}), keys(%{$graph}) ]);
 	}
 
-	($instr, $graph) = adjust_graph_filenames($base_dir, $instr, $graph);
+	adjust_source_filenames($instr, $base_dir);
+	adjust_source_filenames($graph, $base_dir);
 
 	# Set $object_dir to real location of object files. This may differ
 	# from $da_dir if the graph file is just a link to the "real" object
@@ -2017,6 +2054,299 @@ sub read_gcov_file($)
 }
 
 
+#
+# read_intermediate_text(gcov_filename, data)
+#
+# Read gcov intermediate text format in GCOV_FILENAME and add the resulting
+# data to DATA in the following format:
+#
+# data:      source_filename -> file_data
+# file_data: concatenated lines of intermediate text data
+#
+
+sub read_intermediate_text($$)
+{
+	my ($gcov_filename, $data) = @_;
+	my $fd;
+	my $filename;
+
+	open($fd, "<", $gcov_filename) or
+		die("ERROR: Could not read $gcov_filename: $!\n");
+	while (my $line = <$fd>) {
+		if ($line =~ /^file:(.*)$/) {
+			$filename = $1;
+			chomp($filename);
+		} elsif (defined($filename)) {
+			$data->{$filename} .= $line;
+		}
+	}
+	close($fd);
+}
+
+
+#
+# intermediate_text_to_info(fd, data, srcdata)
+#
+# Write DATA in info format to file descriptor FD.
+#
+# data:      filename -> file_data:
+# file_data: concatenated lines of intermediate text data
+#
+# srcdata:   filename -> [ excl, brexcl, checksums ]
+# excl:      lineno -> 1 for all lines for which to exclude all data
+# brexcl:    lineno -> 1 for all lines for which to exclude branch data
+# checksums: lineno -> source code checksum
+#
+# Note: To simplify processing, gcov data is not combined here, that is counts
+#       that appear multiple times for the same lines/branches are not added.
+#       This is done by lcov/genhtml when reading the data files.
+#
+
+sub intermediate_text_to_info($$$)
+{
+	my ($fd, $data, $srcdata) = @_;
+	my $branch_num = 0;
+	my $c;
+
+	return if (!%{$data});
+
+	print($fd "TN:$test_name\n");
+	for my $filename (keys(%{$data})) {
+		my ($excl, $brexcl, $checksums);
+
+		if (defined($srcdata->{$filename})) {
+			($excl, $brexcl, $checksums) = @{$srcdata->{$filename}};
+		}
+
+		print($fd "SF:$filename\n");
+		for my $line (split(/\n/, $data->{$filename})) {
+			if ($line =~ /^lcount:(\d+),(\d+),?/) {
+				# lcount:<line>,<count>
+				# lcount:<line>,<count>,<has_unexecuted_blocks>
+				if ($checksum && exists($checksums->{$1})) {
+					$c = ",".$checksums->{$1};
+				} else {
+					$c = "";
+				}
+				print($fd "DA:$1,$2$c\n") if (!$excl->{$1});
+
+				# Intermediate text format does not provide
+				# branch numbers, and the same branch may appear
+				# multiple times on the same line (e.g. in
+				# template instances). Synthesize a branch
+				# number based on the assumptions:
+				# a) the order of branches is fixed across
+				#    instances
+				# b) an instance starts with an lcount line
+				$branch_num = 0;
+			} elsif ($line =~ /^function:(\d+),(\d+),([^,]+)$/) {
+				next if (!$func_coverage || $excl->{$1});
+
+				# function:<line>,<count>,<name>
+				print($fd "FN:$1,$3\n");
+				print($fd "FNDA:$2,$3\n");
+			} elsif ($line =~ /^function:(\d+),\d+,(\d+),([^,]+)$/) {
+				next if (!$func_coverage || $excl->{$1});
+
+				# function:<start_line>,<end_line>,<count>,
+				#          <name>
+				print($fd "FN:$1,$3\n");
+				print($fd "FNDA:$2,$3\n");
+			} elsif ($line =~ /^branch:(\d+),(taken|nottaken|notexec)/) {
+				next if (!$br_coverage || $excl->{$1} ||
+					 $brexcl->{$1});
+
+				# branch:<line>,taken|nottaken|notexec
+				if ($2 eq "taken") {
+					$c = 1;
+				} elsif ($2 eq "nottaken") {
+					$c = 0;
+				} else {
+					$c = "-";
+				}
+				print($fd "BRDA:$1,0,$branch_num,$c\n");
+				$branch_num++;
+			}
+		}
+		print($fd "end_of_record\n");
+	}
+}
+
+
+sub get_output_fd($$)
+{
+	my ($outfile, $file) = @_;
+	my $fd;
+
+	if (!defined($outfile)) {
+		open($fd, ">", "$file.info") or
+			die("ERROR: Cannot create file $file.info: $!\n");
+	} elsif ($outfile eq "-") {
+		open($fd, ">&STDOUT") or
+			die("ERROR: Cannot duplicate stdout: $!\n");
+	} else {
+		open($fd, ">>", $outfile) or
+			die("ERROR: Cannot write to file $outfile: $!\n");
+	}
+
+	return $fd;
+}
+
+
+#
+# print_gcov_warnings(stderr_file, is_graph, map)
+#
+# Print GCOV warnings in file STDERR_FILE to STDERR. If IS_GRAPH is non-zero,
+# suppress warnings about missing as these are expected. Replace keys found
+# in MAP with their values.
+#
+
+sub print_gcov_warnings($$$)
+{
+	my ($stderr_file, $is_graph, $map) = @_;
+	my $fd;
+
+	if (!open($fd, "<", $stderr_file)) {
+		warn("WARNING: Could not open GCOV stderr file ".
+		     "$stderr_file: $!\n");
+		return;
+	}
+	while (my $line = <$fd>) {
+		next if ($is_graph && $line =~ /cannot open data file/);
+
+		for my $key (keys(%{$map})) {
+			$line =~ s/\Q$key\E/$map->{$key}/g;
+		}
+
+		print(STDERR $line);
+	}
+	close($fd);
+}
+
+
+#
+# process_intermediate(file, dir, tempdir)
+#
+# Create output for a single file (either a data file or a graph file) using
+# gcov's intermediate option.
+#
+
+sub process_intermediate($$$)
+{
+	my ($file, $dir, $tempdir) = @_;
+	my ($fdir, $fbase, $fext);
+	my $data_file;
+	my $errmsg;
+	my %data;
+	my $fd;
+	my $base;
+	my $srcdata;
+	my $is_graph = 0;
+	my ($out, $err, $rc);
+
+	info("Processing %s\n", abs2rel($file, $dir));
+
+	$file = solve_relative_path($cwd, $file);
+	($fdir, $fbase, $fext) = split_filename($file);
+
+	$is_graph = 1 if (".$fext" eq $graph_file_extension);
+
+	if ($is_graph) {
+		# Process graph file - copy to temp directory to prevent
+		# accidental processing of associated data file
+		$data_file = "$tempdir/$fbase$graph_file_extension";
+		if (!copy($file, $data_file)) {
+			$errmsg = "ERROR: Could not copy file $file";
+			goto err;
+		}
+	} else {
+		# Process data file in place
+		$data_file = $file;
+	}
+
+	# Change directory
+	if (!chdir($tempdir)) {
+		$errmsg = "Could not change to directory $tempdir: $!";
+		goto err;
+	}
+
+	# Run gcov on data file
+	($out, $err, $rc) = system_no_output(1 + 2 + 4, $gcov_tool,
+					     $data_file, @gcov_options, "-i");
+	defined($out) && unlink($out);
+	if (defined($err)) {
+		print_gcov_warnings($err, $is_graph, {
+			$data_file => $file,
+		});
+		unlink($err);
+	}
+	if ($rc) {
+		$errmsg = "GCOV failed for $file";
+		goto err;
+	}
+
+	if ($is_graph) {
+		# Remove graph file copy
+		unlink($data_file);
+	}
+
+	# Parse resulting file(s)
+	for my $gcov_filename (glob("*.gcov")) {
+		read_intermediate_text($gcov_filename, \%data);
+		unlink($gcov_filename);
+	}
+
+	if (!%data) {
+		warn("WARNING: GCOV did not produce any data for $file\n");
+		return;
+	}
+
+	# Determine base directory
+	if (defined($base_directory)) {
+		$base = $base_directory;
+	} else {
+		$base = $fdir;
+
+		if (is_compat($COMPAT_MODE_LIBTOOL)) {
+			# Avoid files from .libs dirs
+			$base =~ s/\.libs$//;
+		}
+
+		# Try to find base directory automatically if requested by user
+		if ($rc_auto_base) {
+			$base = find_base_from_source($base, [ keys(%data) ]);
+		}
+	}
+
+	# Apply base file name to relative source files
+	adjust_source_filenames(\%data, $base);
+
+	# Remove excluded source files
+	filter_source_files(\%data);
+
+	# Get data on exclusion markers and checksums if requested
+	if (!$no_markers || $checksum) {
+		$srcdata = get_all_source_data(keys(%data));
+	}
+
+	# Generate output
+	$fd = get_output_fd($output_filename, $file);
+	intermediate_text_to_info($fd, \%data, $srcdata);
+	close($fd);
+
+	chdir($cwd);
+
+	return;
+
+err:
+	if ($ignore[$ERROR_GCOV]) {
+		warn("WARNING: $errmsg!\n");
+	} else {
+		die("ERROR: $errmsg!\n")
+	}
+}
+
+
 # Map LLVM versions to the version of GCC gcov which they emulate.
 
 sub map_llvm_version($)
@@ -2151,8 +2481,12 @@ sub int_handler()
 #
 #   MODE & 1: suppress STDOUT
 #   MODE & 2: suppress STDERR
+#   MODE & 4: redirect to temporary files instead of suppressing
 #
-# Return 0 on success, non-zero otherwise.
+# Return (stdout, stderr, rc):
+#    stdout: path to tempfile containing stdout or undef
+#    stderr: path to tempfile containing stderr or undef
+#    0 on success, non-zero otherwise
 #
 
 sub system_no_output($@)
@@ -2161,14 +2495,31 @@ sub system_no_output($@)
 	my $result;
 	local *OLD_STDERR;
 	local *OLD_STDOUT;
+	my $stdout_file;
+	my $stderr_file;
+	my $fd;
 
 	# Save old stdout and stderr handles
 	($mode & 1) && open(OLD_STDOUT, ">>&", "STDOUT");
 	($mode & 2) && open(OLD_STDERR, ">>&", "STDERR");
 
-	# Redirect to /dev/null
-	($mode & 1) && open(STDOUT, ">", "/dev/null");
-	($mode & 2) && open(STDERR, ">", "/dev/null");
+	if ($mode & 4) {
+		# Redirect to temporary files
+		if ($mode & 1) {
+			($fd, $stdout_file) = tempfile(UNLINK => 1);
+			open(STDOUT, ">", $stdout_file) || warn("$!\n");
+			close($fd);
+		}
+		if ($mode & 2) {
+			($fd, $stderr_file) = tempfile(UNLINK => 1);
+			open(STDERR, ">", $stderr_file) || warn("$!\n");
+			close($fd);
+		}
+	} else {
+		# Redirect to /dev/null
+		($mode & 1) && open(STDOUT, ">", "/dev/null");
+		($mode & 2) && open(STDERR, ">", "/dev/null");
+	}
  
 	debug("system(".join(' ', @_).")\n");
 	system(@_);
@@ -2181,8 +2532,18 @@ sub system_no_output($@)
 	# Restore old handles
 	($mode & 1) && open(STDOUT, ">>&", "OLD_STDOUT");
 	($mode & 2) && open(STDERR, ">>&", "OLD_STDERR");
+
+	# Remove empty output files
+	if (defined($stdout_file) && -z $stdout_file) {
+		unlink($stdout_file);
+		$stdout_file = undef;
+	}
+	if (defined($stderr_file) && -z $stderr_file) {
+		unlink($stderr_file);
+		$stderr_file = undef;
+	}
  
-	return $result;
+	return ($stdout_file, $stderr_file, $result);
 }
 
 
@@ -2260,23 +2621,28 @@ sub apply_config($)
 
 
 #
-# get_exclusion_data(filename)
+# get_source_data(filename)
 #
-# Scan specified source code file for exclusion markers and return
-#   linenumber -> 1
-# for all lines which should be excluded.
+# Scan specified source code file for exclusion markers and checksums. Return
+#   ( excl, brexcl, checksums ) where
+#   excl:      lineno -> 1 for all lines for which to exclude all data
+#   brexcl:    lineno -> 1 for all lines for which to exclude branch data
+#   checksums: lineno -> source code checksum
 #
 
-sub get_exclusion_data($)
+sub get_source_data($)
 {
 	my ($filename) = @_;
 	my %list;
 	my $flag = 0;
+	my %brdata;
+	my $brflag = 0;
+	my %checksums;
 	local *HANDLE;
 
 	if (!open(HANDLE, "<", $filename)) {
 		warn("WARNING: could not open $filename\n");
-		return undef;
+		return;
 	}
 	while (<HANDLE>) {
 		if (/$EXCL_STOP/) {
@@ -2287,14 +2653,62 @@ sub get_exclusion_data($)
 		if (/$excl_line/ || $flag) {
 			$list{$.} = 1;
 		}
+		if (/$EXCL_BR_STOP/) {
+			$brflag = 0;
+		} elsif (/$EXCL_BR_START/) {
+			$brflag = 1;
+		}
+		if (/$excl_br_line/ || $brflag) {
+			$brdata{$.} = 1;
+		}
+		if ($checksum) {
+			chomp();
+			$checksums{$.} = md5_base64($_);
+		}
 	}
 	close(HANDLE);
 
-	if ($flag) {
+	if ($flag || $brflag) {
 		warn("WARNING: unterminated exclusion section in $filename\n");
 	}
 
-	return \%list;
+	return (\%list, \%brdata, \%checksums);
+}
+
+
+#
+# get_all_source_data(filenames)
+#
+# Scan specified source code files for exclusion markers and return
+#   filename -> [ excl, brexcl, checksums ]
+#   excl:      lineno -> 1 for all lines for which to exclude all data
+#   brexcl:    lineno -> 1 for all lines for which to exclude branch data
+#   checksums: lineno -> source code checksum
+#
+
+sub get_all_source_data(@)
+{
+	my @filenames = @_;
+	my %data;
+	my $failed = 0;
+
+	for my $filename (@filenames) {
+		my @d;
+		next if (exists($data{$filename}));
+
+		@d = get_source_data($filename);
+		if (@d) {
+			$data{$filename} = [ @d ];
+		} else {
+			$failed = 1;
+		}
+	}
+
+	if ($failed) {
+		warn("WARNING: some exclusion markers may be ignored\n");
+	}
+
+	return \%data;
 }
 
 
@@ -2318,35 +2732,17 @@ sub apply_exclusion_data($$)
 {
 	my ($instr, $graph) = @_;
 	my $filename;
-	my %excl_data;
-	my $excl_read_failed = 0;
+	my $excl_data;
 
-	# Collect exclusion marker data
-	foreach $filename (sort_uniq_lex(keys(%{$graph}), keys(%{$instr}))) {
-		my $excl = get_exclusion_data($filename);
-
-		# Skip and note if file could not be read
-		if (!defined($excl)) {
-			$excl_read_failed = 1;
-			next;
-		}
-
-		# Add to collection if there are markers
-		$excl_data{$filename} = $excl if (keys(%{$excl}) > 0);
-	}
-
-	# Warn if not all source files could be read
-	if ($excl_read_failed) {
-		warn("WARNING: some exclusion markers may be ignored\n");
-	}
+	($excl_data) = get_all_source_data(keys(%{$graph}), keys(%{$instr}));
 
 	# Skip if no markers were found
-	return ($instr, $graph) if (keys(%excl_data) == 0);
+	return ($instr, $graph) if (!%$excl_data);
 
 	# Apply exclusion marker data to graph
-	foreach $filename (keys(%excl_data)) {
+	foreach $filename (keys(%$excl_data)) {
 		my $function_data = $graph->{$filename};
-		my $excl = $excl_data{$filename};
+		my $excl = $excl_data->{$filename}->[0];
 		my $function;
 
 		next if (!defined($function_data));
@@ -2384,9 +2780,9 @@ sub apply_exclusion_data($$)
 	}
 
 	# Apply exclusion marker data to instr
-	foreach $filename (keys(%excl_data)) {
+	foreach $filename (keys(%$excl_data)) {
 		my $line_data = $instr->{$filename};
-		my $excl = $excl_data{$filename};
+		my $excl = $excl_data->{$filename}->[0];
 		my $line;
 		my @new_data;
 
@@ -2468,10 +2864,12 @@ sub process_graphfile($$)
 
 	# Try to find base directory automatically if requested by user
 	if ($rc_auto_base) {
-		$base_dir = find_base_from_graph($base_dir, $instr, $graph);
+		$base_dir = find_base_from_source($base_dir,
+			[ keys(%{$instr}), keys(%{$graph}) ]);
 	}
 
-	($instr, $graph) = adjust_graph_filenames($base_dir, $instr, $graph);
+	adjust_source_filenames($instr, $base_dir);
+	adjust_source_filenames($graph, $base_dir);
 
 	if (!$no_markers) {
 		# Apply exclusion marker data to graph file data
@@ -2767,11 +3165,11 @@ sub parent_dir($)
 }
 
 #
-# find_base_from_graph(base_dir, instr, graph)
+# find_base_from_source(base_dir, source_files)
 #
-# Try to determine the base directory of the graph file specified by INSTR
-# and GRAPH. The base directory is the base for all relative filenames in
-# the graph file. It is defined by the current working directory at time
+# Try to determine the base directory of the object file built from
+# SOURCE_FILES. The base directory is the base for all relative filenames in
+# the gcov data. It is defined by the current working directory at time
 # of compiling the source file.
 #
 # This function implements a heuristic which relies on the following
@@ -2781,16 +3179,16 @@ sub parent_dir($)
 # - files by the same name are not present in multiple parent directories
 #
 
-sub find_base_from_graph($$$)
+sub find_base_from_source($$)
 {
-	my ($base_dir, $instr, $graph) = @_;
+	my ($base_dir, $source_files) = @_;
 	my $old_base;
 	my $best_miss;
 	my $best_base;
 	my %rel_files;
 
 	# Determine list of relative paths
-	foreach my $filename (keys(%{$instr}), keys(%{$graph})) {
+	foreach my $filename (@$source_files) {
 		next if (file_name_is_absolute($filename));
 
 		$rel_files{$filename} = 1;
@@ -2829,17 +3227,17 @@ sub find_base_from_graph($$$)
 }
 
 #
-# adjust_graph_filenames(base_dir, instr, graph)
+# adjust_source_filenames(hash, base_dir)
 #
-# Make relative paths in INSTR and GRAPH absolute and apply
-# geninfo_adjust_src_path setting to graph file data.
+# Transform all keys of HASH to absolute form and apply requested
+# transformations.
 #
 
-sub adjust_graph_filenames($$$)
+sub adjust_source_filenames($$$)
 {
-	my ($base_dir, $instr, $graph) = @_;
+	my ($hash, $base_dir) = @_;
 
-	foreach my $filename (keys(%{$instr})) {
+	foreach my $filename (keys(%{$hash})) {
 		my $old_filename = $filename;
 
 		# Convert to absolute canonical form
@@ -2851,28 +3249,50 @@ sub adjust_graph_filenames($$$)
 		}
 
 		if ($filename ne $old_filename) {
-			$instr->{$filename} = delete($instr->{$old_filename});
+			$hash->{$filename} = delete($hash->{$old_filename});
 		}
 	}
+}
 
-	foreach my $filename (keys(%{$graph})) {
-		my $old_filename = $filename;
 
-		# Make absolute
-		# Convert to absolute canonical form
-		$filename = solve_relative_path($base_dir, $filename);
+#
+# filter_source_files(hash)
+#
+# Remove unwanted source file data from HASH.
+#
 
-		# Apply adjustment
-		if (defined($adjust_src_pattern)) {
-			$filename =~ s/$adjust_src_pattern/$adjust_src_replace/g;
+sub filter_source_files($)
+{
+	my ($hash) = @_;
+
+	foreach my $filename (keys(%{$hash})) {
+		# Skip external files if requested
+		goto del if (!$opt_external && is_external($filename));
+
+		# Apply include patterns
+		if (@include_patterns) {
+			my $keep;
+
+			foreach my $pattern (@include_patterns) {
+				if ($filename =~ (/^$pattern$/)) {
+					$keep = 1;
+					last;
+				}
+			}
+			goto del if (!$keep);
 		}
 
-		if ($filename ne $old_filename) {
-			$graph->{$filename} = delete($graph->{$old_filename});
+		# Apply exclude patterns
+		foreach my $pattern (@exclude_patterns) {
+			goto del if ($filename =~ (/^$pattern$/));
 		}
-	}
+		next;
 
-	return ($instr, $graph);
+del:
+		# Remove file data
+		delete($hash->{$filename});
+		$excluded_files{$filename} = 1;
+	}
 }
 
 #
@@ -3784,6 +4204,7 @@ sub get_gcov_capabilities()
 		'c' => 'branch-counts',
 		'f' => 'function-summaries',
 		'h' => 'help',
+		'i' => 'intermediate-format',
 		'l' => 'long-file-names',
 		'n' => 'no-output',
 		'o' => 'object-directory',
diff --git a/lcovrc b/lcovrc
index 40f364f..bd4bc3b 100644
--- a/lcovrc
+++ b/lcovrc
@@ -134,6 +134,9 @@ genhtml_desc_html=0
 # when collecting coverage data.
 geninfo_auto_base = 1
 
+# Use gcov intermediate format? Valid values are 0, 1, auto
+geninfo_intermediate = auto
+
 # Directory containing gcov kernel files
 # lcov_gcov_dir = /proc/gcov
 
diff --git a/man/lcovrc.5 b/man/lcovrc.5
index f20d273..bf0ce7a 100644
--- a/man/lcovrc.5
+++ b/man/lcovrc.5
@@ -223,6 +223,11 @@ geninfo_compat_libtool = 0
 geninfo_auto_base = 1
 .br
 
+# Use gcov intermediate format? Valid values are 0, 1, auto
+.br
+geninfo_intermediate = auto
+.br
+
 # Directory containing gcov kernel files
 .br
 lcov_gcov_dir = /proc/gcov
@@ -789,6 +794,25 @@ located, and in addition, is different between files of the same project.
 Default is 1.
 .PP
 
+.BR geninfo_intermediate " ="
+.IR 0 | 1 | auto
+.IP
+Specify whether to use gcov intermediate format
+.br
+
+Use this option to control whether geninfo should use the gcov intermediate
+format while collecting coverage data. The use of the gcov intermediate format
+should increase processing speed. It also provides branch coverage data when
+using the \-\-initial command line option.
+.br
+
+Valid values are 0 for off, 1 for on, and "auto" to let geninfo automatically
+use immediate format when supported by gcov.
+.br
+
+Default is "auto".
+.PP
+
 .BR lcov_gcov_dir " ="
 .I path_to_kernel_coverage_data
 .IP
-- 
2.17.1