llvm-project

History

Vedant Kumar 846b985a92 [llvm-cov] Ignore unclosed line segments when setting line counts This patch makes a slight change to the way llvm-cov determines line execution counts. If there are multiple line segments on a line, the line count is the max count among the regions which start and end on the line. This avoids an issue posed by deferred regions which start on the same line as a terminated region, e.g: if (false) return; //< The line count should be 0, even though a new region //< starts at the semi-colon. foo(); Another change is that counts from line segments which don't correspond to region entries are considered. This enables the first change, and corrects an outstanding issue (see the showLineExecutionCounts.cpp test change). This is related to D35925. Testing: check-profile, llvm-cov lit tests Differential Revision: https://reviews.llvm.org/D36014 llvm-svn: 310012		2017-08-04 00:36:24 +00:00
..
README	…
binary-formats.canonical.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
binary-formats.macho32b	…
binary-formats.macho32l	…
binary-formats.macho64l	…
binary-formats.proftext	…
binary-formats.v1.linux64l	…
binary-formats.v2.linux32l	Reapply (2x) "[PGO] Fix name encoding for ObjC-like functions"	2016-03-28 21:06:42 +00:00
binary-formats.v2.linux64l	Reapply (2x) "[PGO] Fix name encoding for ObjC-like functions"	2016-03-28 21:06:42 +00:00
combine_expansions.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
combine_expansions.proftext	[Coverage] Combine counts of expansion regions if there are no code regions for the same area.	2016-05-05 09:39:45 +00:00
copy_block_helper.gcda	…
copy_block_helper.gcno	…
deferred-regions.covmapping	[llvm-cov] Ignore unclosed line segments when setting line counts	2017-08-04 00:36:24 +00:00
deferred-regions.profdata	[llvm-cov] Ignore unclosed line segments when setting line counts	2017-08-04 00:36:24 +00:00
double_dots.covmapping	[llvm-cov] Disable PGO name compression in a test file	2016-06-29 16:34:57 +00:00
double_dots.proftext	[llvm-cov] Do not allow ".." to escape the coverage sub-directory	2016-06-29 16:22:12 +00:00
elf_binary_comdat.profdata	Reapply (2x) "[PGO] Fix name encoding for ObjC-like functions"	2016-03-28 21:06:42 +00:00
gcov47_compatibility.gcda	…
gcov47_compatibility.gcno	…
hideUnexecutedSubviews.proftext	[llvm-cov] Track function and instantiation coverage separately	2016-09-19 00:38:23 +00:00
highlightedRanges.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
highlightedRanges.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
highlightedRanges.profdata	…
instrprof-comdat.h	[llvm-cov] Swapped the line and count columns.	2016-08-09 19:53:35 +00:00
lineExecutionCounts.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
lineExecutionCounts.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
lineExecutionCounts.proftext	…
multiple-files.covmapping	[llvm-cov] Disable zlib compression in a test input, unbreaks bots	2016-09-08 01:19:29 +00:00
multiple-files.proftext	[llvm-cov] Drop the longest common filename prefix from summaries	2016-09-08 00:56:43 +00:00
multiple-files2.covmapping	[llvm-cov] Strip redundant path components from filenames (fix PR31982)	2017-02-23 22:20:32 +00:00
native_separators.covmapping	[llvm-cov] Use the native path in the coverage report.	2016-08-30 07:01:37 +00:00
prefer_used_to_unused.covmapping	[Coverage] Fix an issue where improper coverage mapping data could be loaded for an inline function.	2016-05-20 09:14:24 +00:00
prefer_used_to_unused.cpp	[Coverage] Fix an issue where improper coverage mapping data could be loaded for an inline function.	2016-05-20 09:14:24 +00:00
prefer_used_to_unused.proftext	[Coverage] Fix an issue where improper coverage mapping data could be loaded for an inline function.	2016-05-20 09:14:24 +00:00
prevent_false_instantiations.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
prevent_false_instantiations.cpp	Reapply "[Coverage] Prevent detection of false instantiations in case of macro expansion."	2016-04-18 15:36:30 +00:00
prevent_false_instantiations.proftext	Reapply "[Coverage] Prevent detection of false instantiations in case of macro expansion."	2016-04-18 15:36:30 +00:00
range_based_for.gcda	…
range_based_for.gcno	…
regionMarkers.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
regionMarkers.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
regionMarkers.proftext	…
report.covmapping	…
report.profdata	…
showExpansions.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
showExpansions.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
showExpansions.profdata	…
showProjectSummary.covmapping	[llvm-cov] Add the project summary to each source file coverage report.	2016-08-24 14:27:23 +00:00
showProjectSummary.proftext	[llvm-cov] Add the project summary to each source file coverage report.	2016-08-24 14:27:23 +00:00
showProjectSummary.test	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
showTabsHTML.covmapping	[LLVM-COV]Replace tabs to the space indentations in the HTML coverage report.	2016-08-04 10:39:43 +00:00
showTabsHTML.proftext	[LLVM-COV]Replace tabs to the space indentations in the HTML coverage report.	2016-08-04 10:39:43 +00:00
templateInstantiations.covmapping	[Coverage] Ensure that coverage mapping data has an expected alignment in 'covmapping' files.	2016-05-18 07:43:27 +00:00
templateInstantiations.profdata	…
test.cpp	…
test.gcda	…
test.gcno	…
test.h	…
test_-a.cpp.gcov	…
test_-a.h.gcov	…
test_-a_-b.cpp.gcov	…
test_-a_-b.h.gcov	…
test_-a_-b_-c_-u.cpp.gcov	…
test_-a_-b_-c_-u.h.gcov	…
test_-a_-b_-u.cpp.gcov	…
test_-a_-b_-u.h.gcov	…
test_-b.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_-b_-f.output	…
test_-f.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_exit_block_arcs.gcda	…
test_exit_block_arcs.gcno	…
test_file_checksum_fail.gcda	…
test_func_checksum_fail.gcda	…
test_long_file_names.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_long_paths.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_missing.cpp.gcov	…
test_missing.h.gcov	…
test_missing.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_no_gcda.cpp.gcov	…
test_no_gcda.h.gcov	…
test_no_gcda.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_no_options.cpp.gcov	…
test_no_options.h.gcov	…
test_no_options.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_no_output.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_no_preserve_paths.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_objdir.cpp.gcov	…
test_objdir.h.gcov	…
test_paths.cpp.gcov	…
test_paths.gcda	…
test_paths.gcno	…
test_paths.h.gcov	…
test_preserve_paths.output	[gcov] Sort file info before printing it	2017-04-26 00:16:10 +00:00
test_read_fail.gcno	…
universal-binary	…
universal-binary.json	[llvm-cov] Do not print out the filename of the object file	2016-10-25 00:08:33 +00:00
universal-binary.proftext	…
zeroFunctionFile.covmapping	[llvm-cov] Avoid 0% when reporting something that's 0/0	2016-11-21 14:00:04 +00:00
zeroFunctionFile.h	[llvm-cov] Avoid 0% when reporting something that's 0/0	2016-11-21 14:00:04 +00:00
zeroFunctionFile.proftext	[llvm-cov] Avoid 0% when reporting something that's 0/0	2016-11-21 14:00:04 +00:00

README

These inputs were pre-generated to allow for easier testing of llvm-cov.

The files used to test the gcov compatible code coverage tool were generated
using the following method:

  test.gcno and test.gcda were create by running clang:
    clang++ -g -ftest-coverage -fprofile-arcs test.cpp

  test.cpp.gcov was created by running gcov 4.2.1:
    gcov test.cpp

The 'covmapping' files that are used to test llvm-cov contain raw sections
with the coverage mapping data generated by the compiler and linker. They are
created by running clang and llvm-cov:
  clang++ -fprofile-instr-generate -fcoverage-mapping -o test test.cpp
  llvm-cov convert-for-testing -o test.covmapping test

The 'profdata' files were generated by running an instrumented version of the
program and merging the raw profile data using llvm-profdata.
  ./test
  llvm-profdata merge -o test.profdata default.profraw