forked from OSchip/llvm-project
cc254ba4a7
Summary: Local testing has demonstrated a great speed improvement, compare the following: 1) Existing version: ``` $ time llvm-cov show -format=html -output-dir=report -instr-profile=... ... The tool has been launched: 00:00:00 Loading coverage data: 00:00:00 Get unique source files: 00:00:33 Creating an index out of the source files: 00:00:34 Going into prepareFileReports: 00:00:34 Going to emit summary information for each file: 00:28:55 <-- 28:21 min! Going to emit links to files with no function: 00:28:55 Launching 32 threads for generating HTML files: 00:28:55 real 37m43.651s user 112m5.540s sys 7m39.872s ``` 2) Multi-threaded version with 32 CPUs: ``` $ time llvm-cov show -format=html -output-dir=report -instr-profile=... ... The tool has been launched: 00:00:00 Loading coverage data: 00:00:00 Get unique source files: 00:00:38 Creating an index out of the source files: 00:00:40 Going into prepareFileReports: 00:00:40 Preparing file reports using 32 threads: 00:00:40 # Creating thread tasks for the following number of files: 16422 Going to emit summary information for each file: 00:01:57 <-- 1:17 min! Going to emit links to files with no function: 00:01:58 Launching 32 threads for generating HTML files: 00:01:58 real 11m2.044s user 134m48.124s sys 7m53.388s ``` Reviewers: vsk, morehouse Reviewed By: vsk Subscribers: Dor1s, llvm-commits, kcc Differential Revision: https://reviews.llvm.org/D41206 llvm-svn: 321871 |
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| .. | ||
| multiple_objects | ||
| multithreaded_report | ||
| sources_specified | ||
| README | ||
| binary-formats.canonical.json | ||
| binary-formats.macho32b | ||
| binary-formats.macho32l | ||
| binary-formats.macho64l | ||
| binary-formats.proftext | ||
| binary-formats.v1.linux64l | ||
| binary-formats.v2.linux32l | ||
| binary-formats.v2.linux64l | ||
| combine_expansions.covmapping | ||
| combine_expansions.proftext | ||
| copy_block_helper.gcda | ||
| copy_block_helper.gcno | ||
| deferred-regions.covmapping | ||
| deferred-regions.profdata | ||
| dir-with-filtering.covmapping | ||
| dir-with-filtering.proftext | ||
| dir-with-filtering1.cpp | ||
| dir-with-filtering2.cpp | ||
| double_dots.covmapping | ||
| double_dots.proftext | ||
| elf_binary_comdat.profdata | ||
| gcov47_compatibility.gcda | ||
| gcov47_compatibility.gcno | ||
| hideUnexecutedSubviews.proftext | ||
| highlightedRanges.covmapping | ||
| highlightedRanges.json | ||
| highlightedRanges.profdata | ||
| ifdef.covmapping | ||
| ifdef.profdata | ||
| instrprof-comdat.h | ||
| lineExecutionCounts.covmapping | ||
| lineExecutionCounts.json | ||
| lineExecutionCounts.proftext | ||
| malformedRegions.covmapping | ||
| multiple-files.covmapping | ||
| multiple-files.proftext | ||
| multiple-files2.covmapping | ||
| name_whitelist.covmapping | ||
| name_whitelist.cpp | ||
| name_whitelist.proftext | ||
| native_separators.covmapping | ||
| path_equivalence.covmapping | ||
| path_equivalence.proftext | ||
| prefer_used_to_unused.covmapping | ||
| prefer_used_to_unused.cpp | ||
| prefer_used_to_unused.proftext | ||
| prevent_false_instantiations.covmapping | ||
| prevent_false_instantiations.cpp | ||
| prevent_false_instantiations.proftext | ||
| range_based_for.gcda | ||
| range_based_for.gcno | ||
| regionMarkers.covmapping | ||
| regionMarkers.json | ||
| regionMarkers.proftext | ||
| report.covmapping | ||
| report.profdata | ||
| showExpansions.covmapping | ||
| showExpansions.json | ||
| showExpansions.profdata | ||
| showProjectSummary.covmapping | ||
| showProjectSummary.proftext | ||
| showProjectSummary.test | ||
| showTabsHTML.covmapping | ||
| showTabsHTML.proftext | ||
| templateInstantiations.covmapping | ||
| 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 | ||
| test_-b_-f.output | ||
| test_-f.output | ||
| 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 | ||
| test_long_paths.output | ||
| test_missing.cpp.gcov | ||
| test_missing.h.gcov | ||
| test_missing.output | ||
| test_no_gcda.cpp.gcov | ||
| test_no_gcda.h.gcov | ||
| test_no_gcda.output | ||
| test_no_options.cpp.gcov | ||
| test_no_options.h.gcov | ||
| test_no_options.output | ||
| test_no_output.output | ||
| test_no_preserve_paths.output | ||
| 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 | ||
| test_read_fail.gcno | ||
| universal-binary | ||
| universal-binary.json | ||
| universal-binary.proftext | ||
| whitelist1.txt | ||
| whitelist2.txt | ||
| zeroFunctionFile.covmapping | ||
| zeroFunctionFile.h | ||
| zeroFunctionFile.proftext | ||
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