clang-tests/gcc-4_2-testsuite/src/lib/gcov.exp - llvm-archive - Git at Google

 #   Copyright (C) 1997, 2001 Free Software Foundation, Inc.

 # This program 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 of the License, or
 # (at your option) any later version.
 #
 # This program 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 this program; if not, write to the Free Software
 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

 # Verify various kinds of gcov output: line counts, branch percentages,
 # and call return percentages.  None of this is language-specific.

 global GCOV

 #
 # clean-gcov -- delete the working files the compiler creates for gcov
 #
 # TESTCASE is the name of the test.
 #
 proc clean-gcov { testcase } {
     set basename [file tail $testcase]
     set base [file rootname $basename]
     remote_file host delete $base.gcno $base.gcda \
 	$basename.gcov $base.h.gcov
 }

 #
 # verify-lines -- check that line counts are as expected
 #
 # TESTCASE is the name of the test.
 # FILE is the name of the gcov output file.
 #
 proc verify-lines { testcase file } {
     #send_user "verify-lines\n"
     set failed 0
     set fd [open $file r]
     while { [gets $fd line] >= 0 } {
 	if [regexp "^ *(\[^:]*): *(\[0-9\]+):.*count\\((\[0-9\]+)\\)" \
 		"$line" all is n shouldbe] {
 	    if { $is == "" } {
 		fail "$n:no data available for this line"
 		incr failed
 	    } elseif { $is != $shouldbe } {
 		fail "$n:is $is:should be $shouldbe"
 		incr failed
 	    }
 	}
     }
     close $fd
     return $failed
 }

 #
 # verify-branches -- check that branch percentages are as expected
 #
 # TESTCASE is the name of the test.
 # FILE is the name of the gcov output file.
 #
 # Checks are based on comments in the source file.  This means to look for
 # branch percentages 10 or 90, 20 or 80, and # 70 or 30:
 #     /* branch(10, 20, 70) */
 # This means that all specified percentages should have been seen by now:
 #     /* branch(end) */
 # All specified percentages must also be seen by the next branch(n) or
 # by the end of the file.
 #
 # Each check depends on the compiler having generated the expected
 # branch instructions.  Don't check for branches that might be
 # optimized away or replaced with predicated instructions.
 #
 proc verify-branches { testcase file } {
     #send_user "verify-branches\n"
     set failed 0
     set shouldbe ""
     set fd [open $file r]
     set n 0
     while { [gets $fd line] >= 0 } {
 	regexp "^\[^:\]+: *(\[0-9\]+):" "$line" all n
 	if [regexp "branch" $line] {
 	    verbose "Processing branch line $n: $line" 3
 	    if [regexp "branch\\((\[0-9 \]+)\\)" "$line" all new_shouldbe] {
 		# All percentages in the current list should have been seen.
 		if {[llength $shouldbe] != 0} {
 		    fail "$n: expected branch percentages not found: $shouldbe"
 		    incr failed
 		    set shouldbe ""
 		}
 		set shouldbe $new_shouldbe
 		#send_user "$n: looking for: $shouldbe\n"
 	        # Record the percentages to check for. Replace percentage
 		# n > 50 with 100-n, since block ordering affects the
 		# direction of a branch.
 		for {set i 0} {$i < [llength $shouldbe]} {incr i} {
 		    set num [lindex $shouldbe $i]
 		    if {$num > 50} {
 			set shouldbe [lreplace $shouldbe $i $i [expr 100 - $num]]
 		    }
 		}
 	    } elseif [regexp "branch +\[0-9\]+ taken (-\[0-9\]+)%" "$line" \
 			all taken] {
 		# Percentages should never be negative.
 		fail "$n: negative percentage: $taken"
 		incr failed
 	    } elseif [regexp "branch +\[0-9\]+ taken (\[0-9\]+)%" "$line" \
 			all taken] {
 		#send_user "$n: taken = $taken\n"
 		# Percentages should never be greater than 100.
 		if {$taken > 100} {
 		    fail "$n: percentage greater than 100: $taken"
 		    incr failed
 		}
 		if {$taken > 50} {
 		    set taken [expr 100 - $taken]
 		}
 		# If this percentage is one to check for then remove it
 		# from the list.  It's normal to ignore some reports.
 		set i [lsearch $shouldbe $taken]
 		if {$i != -1} {
 		    set shouldbe [lreplace $shouldbe $i $i]
 		}
 	    } elseif [regexp "branch\\(end\\)" "$line"] {
 		# All percentages in the list should have been seen by now.
 		if {[llength $shouldbe] != 0} {
 		    fail "$n: expected branch percentages not found: $shouldbe"
 		    incr failed
 		}
 		set shouldbe ""
 	    }
 	}
     }
     # All percentages in the list should have been seen.
     if {[llength $shouldbe] != 0} {
 	fail "$n: expected branch percentages not found: $shouldbe"
 	incr failed
     }
     close $fd
     return $failed
 }

 #
 # verify-calls -- check that call return percentages are as expected
 #
 # TESTCASE is the name of the test.
 # FILE is the name of the gcov output file.
 #
 # Checks are based on comments in the source file.  This means to look for
 # call return percentages 50, 20, 33:
 #     /* returns(50, 20, 33) */
 # This means that all specified percentages should have been seen by now:
 #     /* returns(end) */
 # All specified percentages must also be seen by the next returns(n) or
 # by the end of the file.
 #
 # Each check depends on the compiler having generated the expected
 # call instructions.  Don't check for calls that are inserted by the
 # compiler or that might be inlined.
 #
 proc verify-calls { testcase file } {
     #send_user "verify-calls\n"
     set failed 0
     set shouldbe ""
     set fd [open $file r]
     set n 0
     while { [gets $fd line] >= 0 } {
 	regexp "^\[^:\]+: *(\[0-9\]+):" "$line" all n
 	if [regexp "return" $line] {
 	    verbose "Processing returns line $n: $line" 3
 	    if [regexp "returns\\((\[0-9 \]+)\\)" "$line" all new_shouldbe] {
 		# All percentages in the current list should have been seen.
 		if {[llength $shouldbe] != 0} {
 		    fail "$n: expected return percentages not found: $shouldbe"
 		    incr failed
 		    set shouldbe ""
 		}
 	        # Record the percentages to check for.
 		set shouldbe $new_shouldbe
 	    } elseif [regexp "call +\[0-9\]+ returned (-\[0-9\]+)%" "$line" \
 			all returns] {
 		# Percentages should never be negative.
 		fail "$n: negative percentage: $returns"
 		incr failed
 	    } elseif [regexp "call +\[0-9\]+ returned (\[0-9\]+)%" "$line" \
 			all returns] {
 		# For branches we check that percentages are not greater than
 		# 100 but call return percentages can be, as for setjmp(), so
 		# don't count that as an error.
 		#
 		# If this percentage is one to check for then remove it
 		# from the list.  It's normal to ignore some reports.
 		set i [lsearch $shouldbe $returns]
 		if {$i != -1} {
 		    set shouldbe [lreplace $shouldbe $i $i]
 		}
 	    } elseif [regexp "returns\\(end\\)" "$line"] {
 		# All percentages in the list should have been seen by now.
 		if {[llength $shouldbe] != 0} {
 		    fail "$n: expected return percentages not found: $shouldbe"
 		    incr failed
 		}
 		set shouldbe ""
 	    }
 	}
     }
     # All percentages in the list should have been seen.
     if {[llength $shouldbe] != 0} {
 	fail "$n: expected return percentages not found: $shouldbe"
 	incr failed
     }
     close $fd
     return $failed
 }

 # Called by dg-final to run gcov and analyze the results.
 #
 # ARGS consists of the optional strings "branches" and/or "calls",
 # (indicating that these things should be verified) followed by a
 # list of arguments to provide to gcov, including the name of the
 # source file.

 proc run-gcov { args } {
     global GCOV
     global srcdir subdir

     set gcov_args [lindex $args end]

     set gcov_verify_calls 0
     set gcov_verify_branches 0
     set gcov_execute_xfail ""
     set gcov_verify_xfail ""

     foreach a $args {
 	if { $a == "calls" } {
 	  set gcov_verify_calls 1
 	} elseif { $a == "branches" } {
 	  set gcov_verify_branches 1
 	}
     }

     # Extract the test name from the arguments.
     set testcase [lindex $gcov_args end]

     if { $gcov_execute_xfail != "" } {
 	eval setup_xfail [split $gcov_execute_xfail]
     }

     verbose "Running $GCOV $testcase" 2
     set testcase [remote_download host $testcase]
     set result [remote_exec host $GCOV $gcov_args]
     if { [lindex $result 0] != 0 } {
 	fail "$subdir/$testcase gcov failed: [lindex $result 1]"
 	clean-gcov $testcase
 	return
     }

     # Get the gcov output file after making sure it exists.
     set files [glob -nocomplain $testcase.gcov]
     if { $files == "" } {
         fail "$subdir/$testcase gcov failed: $testcase.gcov does not exist"
         clean-gcov $testcase
         return
     }
     remote_upload host $testcase.gcov $testcase.gcov

     if { $gcov_verify_xfail != "" } {
 	eval setup_xfail [split $gcov_verify_xfail]
     }

     # Check that line execution counts are as expected.
     set lfailed [verify-lines $testcase $testcase.gcov]

     # If requested via the .x file, check that branch and call information
     # is correct.
     if { $gcov_verify_branches } {
 	set bfailed [verify-branches $testcase $testcase.gcov]
     } else {
 	set bfailed 0
     }
     if { $gcov_verify_calls } {
 	set cfailed [verify-calls $testcase $testcase.gcov]
     } else {
 	set cfailed 0
     }

     # Report whether the gcov test passed or failed.  If there were
     # multiple failures then the message is a summary.
     set tfailed [expr $lfailed + $bfailed + $cfailed]
     if { $tfailed > 0 } {
 	fail "$subdir/$testcase gcov: $lfailed failures in line counts, $bfailed in branch percentages, $cfailed in return percentages"
     } else {
 	pass "$subdir/$testcase gcov"
 	clean-gcov $testcase
     }
 }
	# Copyright (C) 1997, 2001 Free Software Foundation, Inc.

	# This program 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 of the License, or
	# (at your option) any later version.
	#
	# This program 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 this program; if not, write to the Free Software
	# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

	# Verify various kinds of gcov output: line counts, branch percentages,
	# and call return percentages. None of this is language-specific.

	global GCOV

	#
	# clean-gcov -- delete the working files the compiler creates for gcov
	#
	# TESTCASE is the name of the test.
	#
	proc clean-gcov { testcase } {
	set basename [file tail $testcase]
	set base [file rootname $basename]
	remote_file host delete $base.gcno $base.gcda \
	$basename.gcov $base.h.gcov
	}

	#
	# verify-lines -- check that line counts are as expected
	#
	# TESTCASE is the name of the test.
	# FILE is the name of the gcov output file.
	#
	proc verify-lines { testcase file } {
	#send_user "verify-lines\n"
	set failed 0
	set fd [open $file r]
	while { [gets $fd line] >= 0 } {
	if [regexp "^ (\[^:]): (\[0-9\]+):.count\\((\[0-9\]+)\\)" \
	"$line" all is n shouldbe] {
	if { $is == "" } {
	fail "$n:no data available for this line"
	incr failed
	} elseif { $is != $shouldbe } {
	fail "$n:is $is:should be $shouldbe"
	incr failed
	}
	}
	}
	close $fd
	return $failed
	}

	#
	# verify-branches -- check that branch percentages are as expected
	#
	# TESTCASE is the name of the test.
	# FILE is the name of the gcov output file.
	#
	# Checks are based on comments in the source file. This means to look for
	# branch percentages 10 or 90, 20 or 80, and # 70 or 30:
	# /* branch(10, 20, 70) */
	# This means that all specified percentages should have been seen by now:
	# /* branch(end) */
	# All specified percentages must also be seen by the next branch(n) or
	# by the end of the file.
	#
	# Each check depends on the compiler having generated the expected
	# branch instructions. Don't check for branches that might be
	# optimized away or replaced with predicated instructions.
	#
	proc verify-branches { testcase file } {
	#send_user "verify-branches\n"
	set failed 0
	set shouldbe ""
	set fd [open $file r]
	set n 0
	while { [gets $fd line] >= 0 } {
	regexp "^\[^:\]+: *(\[0-9\]+):" "$line" all n
	if [regexp "branch" $line] {
	verbose "Processing branch line $n: $line" 3
	if [regexp "branch\\((\[0-9 \]+)\\)" "$line" all new_shouldbe] {
	# All percentages in the current list should have been seen.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected branch percentages not found: $shouldbe"
	incr failed
	set shouldbe ""
	}
	set shouldbe $new_shouldbe
	#send_user "$n: looking for: $shouldbe\n"
	# Record the percentages to check for. Replace percentage
	# n > 50 with 100-n, since block ordering affects the
	# direction of a branch.
	for {set i 0} {$i < [llength $shouldbe]} {incr i} {
	set num [lindex $shouldbe $i]
	if {$num > 50} {
	set shouldbe [lreplace $shouldbe $i $i [expr 100 - $num]]
	}
	}
	} elseif [regexp "branch +\[0-9\]+ taken (-\[0-9\]+)%" "$line" \
	all taken] {
	# Percentages should never be negative.
	fail "$n: negative percentage: $taken"
	incr failed
	} elseif [regexp "branch +\[0-9\]+ taken (\[0-9\]+)%" "$line" \
	all taken] {
	#send_user "$n: taken = $taken\n"
	# Percentages should never be greater than 100.
	if {$taken > 100} {
	fail "$n: percentage greater than 100: $taken"
	incr failed
	}
	if {$taken > 50} {
	set taken [expr 100 - $taken]
	}
	# If this percentage is one to check for then remove it
	# from the list. It's normal to ignore some reports.
	set i [lsearch $shouldbe $taken]
	if {$i != -1} {
	set shouldbe [lreplace $shouldbe $i $i]
	}
	} elseif [regexp "branch\\(end\\)" "$line"] {
	# All percentages in the list should have been seen by now.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected branch percentages not found: $shouldbe"
	incr failed
	}
	set shouldbe ""
	}
	}
	}
	# All percentages in the list should have been seen.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected branch percentages not found: $shouldbe"
	incr failed
	}
	close $fd
	return $failed
	}

	#
	# verify-calls -- check that call return percentages are as expected
	#
	# TESTCASE is the name of the test.
	# FILE is the name of the gcov output file.
	#
	# Checks are based on comments in the source file. This means to look for
	# call return percentages 50, 20, 33:
	# /* returns(50, 20, 33) */
	# This means that all specified percentages should have been seen by now:
	# /* returns(end) */
	# All specified percentages must also be seen by the next returns(n) or
	# by the end of the file.
	#
	# Each check depends on the compiler having generated the expected
	# call instructions. Don't check for calls that are inserted by the
	# compiler or that might be inlined.
	#
	proc verify-calls { testcase file } {
	#send_user "verify-calls\n"
	set failed 0
	set shouldbe ""
	set fd [open $file r]
	set n 0
	while { [gets $fd line] >= 0 } {
	regexp "^\[^:\]+: *(\[0-9\]+):" "$line" all n
	if [regexp "return" $line] {
	verbose "Processing returns line $n: $line" 3
	if [regexp "returns\\((\[0-9 \]+)\\)" "$line" all new_shouldbe] {
	# All percentages in the current list should have been seen.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected return percentages not found: $shouldbe"
	incr failed
	set shouldbe ""
	}
	# Record the percentages to check for.
	set shouldbe $new_shouldbe
	} elseif [regexp "call +\[0-9\]+ returned (-\[0-9\]+)%" "$line" \
	all returns] {
	# Percentages should never be negative.
	fail "$n: negative percentage: $returns"
	incr failed
	} elseif [regexp "call +\[0-9\]+ returned (\[0-9\]+)%" "$line" \
	all returns] {
	# For branches we check that percentages are not greater than
	# 100 but call return percentages can be, as for setjmp(), so
	# don't count that as an error.
	#
	# If this percentage is one to check for then remove it
	# from the list. It's normal to ignore some reports.
	set i [lsearch $shouldbe $returns]
	if {$i != -1} {
	set shouldbe [lreplace $shouldbe $i $i]
	}
	} elseif [regexp "returns\\(end\\)" "$line"] {
	# All percentages in the list should have been seen by now.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected return percentages not found: $shouldbe"
	incr failed
	}
	set shouldbe ""
	}
	}
	}
	# All percentages in the list should have been seen.
	if {[llength $shouldbe] != 0} {
	fail "$n: expected return percentages not found: $shouldbe"
	incr failed
	}
	close $fd
	return $failed
	}

	# Called by dg-final to run gcov and analyze the results.
	#
	# ARGS consists of the optional strings "branches" and/or "calls",
	# (indicating that these things should be verified) followed by a
	# list of arguments to provide to gcov, including the name of the
	# source file.

	proc run-gcov { args } {
	global GCOV
	global srcdir subdir

	set gcov_args [lindex $args end]

	set gcov_verify_calls 0
	set gcov_verify_branches 0
	set gcov_execute_xfail ""
	set gcov_verify_xfail ""

	foreach a $args {
	if { $a == "calls" } {
	set gcov_verify_calls 1
	} elseif { $a == "branches" } {
	set gcov_verify_branches 1
	}
	}

	# Extract the test name from the arguments.
	set testcase [lindex $gcov_args end]

	if { $gcov_execute_xfail != "" } {
	eval setup_xfail [split $gcov_execute_xfail]
	}

	verbose "Running $GCOV $testcase" 2
	set testcase [remote_download host $testcase]
	set result [remote_exec host $GCOV $gcov_args]
	if { [lindex $result 0] != 0 } {
	fail "$subdir/$testcase gcov failed: [lindex $result 1]"
	clean-gcov $testcase
	return
	}

	# Get the gcov output file after making sure it exists.
	set files [glob -nocomplain $testcase.gcov]
	if { $files == "" } {
	fail "$subdir/$testcase gcov failed: $testcase.gcov does not exist"
	clean-gcov $testcase
	return
	}
	remote_upload host $testcase.gcov $testcase.gcov

	if { $gcov_verify_xfail != "" } {
	eval setup_xfail [split $gcov_verify_xfail]
	}

	# Check that line execution counts are as expected.
	set lfailed [verify-lines $testcase $testcase.gcov]

	# If requested via the .x file, check that branch and call information
	# is correct.
	if { $gcov_verify_branches } {
	set bfailed [verify-branches $testcase $testcase.gcov]
	} else {
	set bfailed 0
	}
	if { $gcov_verify_calls } {
	set cfailed [verify-calls $testcase $testcase.gcov]
	} else {
	set cfailed 0
	}

	# Report whether the gcov test passed or failed. If there were
	# multiple failures then the message is a summary.
	set tfailed [expr $lfailed + $bfailed + $cfailed]
	if { $tfailed > 0 } {
	fail "$subdir/$testcase gcov: $lfailed failures in line counts, $bfailed in branch percentages, $cfailed in return percentages"
	} else {
	pass "$subdir/$testcase gcov"
	clean-gcov $testcase
	}
	}