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* Reapply "[Coverage] Prevent detection of false instantiations in case of ↵Igor Kudrin2016-04-183-0/+41
| | | | | | | | | | | | | | | | | | macro expansion." The root of the problem was that findMainViewFileID(File, Function) could return some ID for any given file, even though that file was not the main file for that function. This patch ensures that the result of this function is conformed with the result of findMainViewFileID(Function). This commit reapplies r266436, which was reverted by r266458, with the .covmapping file serialized in v1 format. Differential Revision: http://reviews.llvm.org/D18787 llvm-svn: 266620
* Revert "[Coverage] Prevent detection of false instantiations in case of ↵Igor Kudrin2016-04-153-41/+0
| | | | | | | | macro expansion." This reverts commit r266436 as it broke buildbot. llvm-svn: 266458
* [Coverage] Prevent detection of false instantiations in case of macro expansion.Igor Kudrin2016-04-153-0/+41
| | | | | | | | | | | | | The root of the problem was that findMainViewFileID(File, Function) could return some ID for any given file, even though that file was not the main file for that function. This patch ensures that the result of this function is conformed with the result of findMainViewFileID(Function). Differential Revision: http://reviews.llvm.org/D18787 llvm-svn: 266436
* [Coverage] Fix the expected counts in instrprof-comdat.hVedant Kumar2016-03-281-6/+3
| | | | llvm-svn: 264675
* Reapply (2x) "[PGO] Fix name encoding for ObjC-like functions"Vedant Kumar2016-03-284-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | Function names in ObjC can have spaces in them. This interacts poorly with name compression, which uses spaces to separate PGO names. Fix the issue by using a different separator and update a test. I chose "\01" as the separator because 1) it's non-printable, 2) we strip it from PGO names, and 3) it's the next natural choice once "\00" is discarded (that one's overloaded). What's changed since the original commit? - I fixed up the covmap-V2 binary format tests using a linux VM. - I weakened the CHECK lines in instrprof-comdat.h to account for the fact that there have been bugfixes to clang coverage. These will be fixed up in a follow-up. - I added an assert to make sure we don't get bitten by this again. - I constructed the c-general.profraw file without name compression enabled to appease some bots. Differential Revision: http://reviews.llvm.org/D18516 llvm-svn: 264658
* Revert "Reapply "[PGO] Fix name encoding for ObjC-like functions""Vedant Kumar2016-03-284-8/+3
| | | | | | | This reverts commit r264641 to investigate why c-general.test is failing on the bots. llvm-svn: 264643
* Reapply "[PGO] Fix name encoding for ObjC-like functions"Vedant Kumar2016-03-284-3/+8
| | | | | | | | | | | | | | | | | | | | | Function names in ObjC can have spaces in them. This interacts poorly with name compression, which uses spaces to separate PGO names. Fix the issue by using a different separator and update a test. I chose "\01" as the separator because 1) it's non-printable, 2) we strip it from PGO names, and 3) it's the next natural choice once "\00" is discarded (that one's overloaded). This reverts the revert commit beaf3d18. What's changed? - I fixed up the covmap-V2 binary format tests using a linux VM. - I updated the expected counts in instrprof-comdat.h to account for the fact that there have been bugfixes to clang coverage. - I added an assert to make sure we don't get bitten by this again. Differential Revision: http://reviews.llvm.org/D18516 llvm-svn: 264641
* Fix buildbot failure (hosts without zlib)Xinliang David Li2016-02-102-0/+0
| | | | llvm-svn: 260446
* [Coverage] add covmap v2 binary format regression testXinliang David Li2016-02-103-0/+0
| | | | llvm-svn: 260428
* llvm-cov: Fix reading gcov data that does not have function namesJustin Bogner2016-02-082-0/+0
| | | | | | | | | | | | | | | | | | | | | In order for recent gcov versions to read the coverage data, you have to use UseCfgChecksum=true and FunctionNamesInData=false options for coverage profiling pass. This is because gcov is expecting the function section in .gcda to be exactly 3 words in size, containing ident and two checksums. While llvm-cov is compatible with UseCfgChecksum=true, it always expects a function name in .gcda function sections (it's not compatible with FunctionNamesInData=false). Thus it's currently impossible to generate one set of coverage files that works with both gcov and llvm-cov. This change fixes the reading of coverage information to only read the function name if it's present. Patch by Arseny Kapoulkine. Thanks! llvm-svn: 260162
* re-submit test case (withright format-version)Xinliang David Li2016-01-213-0/+19
| | | | llvm-svn: 258384
* Revert 258376 -- wrong versionXinliang David Li2016-01-213-19/+0
| | | | llvm-svn: 258377
* [Coverage] Add a test case for comdatXinliang David Li2016-01-213-0/+19
| | | | | | | | | | | The binary contains two (merged) covmap sections which have duplicate CovMapRecords from comdat (template instantation). This test makes sure the reader reads it properly. It also tests that the coverage data from different instantiations of the same template function are properly merged in show output. llvm-svn: 258376
* InstrProf: Fix display of large numbers in llvm-covJustin Bogner2015-05-132-6/+6
| | | | | | | | llvm-cov was truncating numbers that were larger than a particular fixed width, which is as confusing as it is useless. Instead, we use engineering notation with SI prefix for magnitude. llvm-svn: 237307
* llvm-cov: Warn instead of error if a .gcda has arcs from an exit blockJustin Bogner2015-03-172-0/+0
| | | | | | Patch by Vanderson M. Rosario. Thanks! llvm-svn: 232443
* InstrProf: Fix CoverageMappingReader on big endianJustin Bogner2015-03-161-0/+0
| | | | | | | | This makes the reader check the endianness of the object file its given and behave appropriately. For the test I dug up a really old linker and created a ppc-apple-darwin file for llvm-cov to read. llvm-svn: 232422
* InstrProf: Do a better job of reading coverage mapping data.Justin Bogner2015-03-163-0/+4
| | | | | | | | | | | | | | | | | | | | | | This code was casting regions of a memory buffer to a couple of different structs. This is wrong in a few ways: 1. It breaks aliasing rules. 2. If the buffer isn't aligned, it hits undefined behaviour. 3. It completely ignores endianness differences. 4. The structs being defined for this aren't specifying their padding properly, so this doesn't even represent the data properly on some platforms. This commit is mostly NFC, except that it fixes reading coverage for 32 bit binaries as a side effect of getting rid of the mispadded structs. I've included a test for that. I've also baked in that we only handle little endian more explicitly, since that was true in practice already. I'll fix this to handle endianness properly in a followup commit. llvm-svn: 232346
* Now that r231902's test is executed, make it actually passJustin Bogner2015-03-111-0/+0
| | | | | | | | As of r231908, the test I added in r231902 actually gets run - but I'd checked in a stale version of the input so it didn't pass. Fix the input and un-xfail the test. llvm-svn: 231911
* InstrProf: Teach llvm-cov to handle universal binaries when given -archJustin Bogner2015-03-112-0/+4
| | | | llvm-svn: 231902
* InstrProf: Use the proftext format for these coverage testsJustin Bogner2015-03-094-0/+16
| | | | | | This format's easier to understand and update by hand. llvm-svn: 231686
* llvm-cov: Actually use the command line arguments when reportingJustin Bogner2015-02-141-0/+0
| | | | | | | | This code didn't really make sense as is. If a filename is passed in, the user obviously wants the coverage *for that file*, not *for everything*. llvm-svn: 229217
* InstrProf: Remove CoverageMapping::HasCodeBefore, it isn't usedJustin Bogner2015-02-033-0/+0
| | | | | | | It's not entirely clear to me what this field was meant for, but it's always false. Remove it. llvm-svn: 228034
* Revert r218673 'llvm-cov: add test for report's function & file association.'Alex Lorenz2014-09-303-8/+0
| | | | | | Test causes buildbot failures. llvm-svn: 218676
* llvm-cov: add test for report's function & file association.Alex Lorenz2014-09-303-0/+8
| | | | | | | | This commit adds a test which checks that the functions defined in header files will get associated with the header files rather than the source files in the reports. Differential Revision: http://reviews.llvm.org/D5489 llvm-svn: 218673
* llvm-cov: Use the number of executed functions for the function coverage metric.Alex Lorenz2014-09-302-0/+0
| | | | | | | | This commit fixes llvm-cov's function coverage metric by using the number of executed functions instead of the number of fully covered functions. Differential Revision: http://reviews.llvm.org/D5196 llvm-svn: 218672
* llvm-cov: Combine segments that cover the same locationJustin Bogner2014-09-252-0/+0
| | | | | | | | If we have multiple coverage counts for the same segment, we need to add them up rather than arbitrarily choosing one. This fixes that and adds a test with template instantiations to exercise it. llvm-svn: 218432
* llvm-cov: Prevent a test from matching its own check linesJustin Bogner2014-09-191-0/+0
| | | | | | | Since llvm-cov shows the source file in its output, be careful about potentially matching the check lines themselves. llvm-svn: 218138
* llvm-cov: Fix dropped lines when filters were appliedJustin Bogner2014-09-191-0/+0
| | | | | | | Uncovered lines in the middle of a covered region weren't being shown when filtering to a particular function. llvm-svn: 218109
* Revert "llvm-cov: Remove an overly system specific test"Justin Bogner2014-09-111-0/+0
| | | | | | | | | | This fixes a call to sys::fs::equivalent that should've been to CodeCoverageTool::equivalentFiles, which lets us restore the test of r217476 that was removed in r217478. This reverts r217478, but the test works this time. llvm-svn: 217646
* llvm-cov: Fix a misuse of ArrayRef::slice I introduced in r217430Justin Bogner2014-09-102-0/+0
| | | | | | | It appears this code was completely untested, so using ArrayRef wrong didn't break anything obvious. llvm-svn: 217476
* llvm-cov: add code coverage tool that's based on coverage mapping format and ↵Alex Lorenz2014-08-227-4/+18
| | | | | | | | | | | | | clang's pgo. This commit expands llvm-cov's functionality by adding support for a new code coverage tool that uses LLVM's coverage mapping format and clang's instrumentation based profiling. The gcov compatible tool can be invoked by supplying the 'gcov' command as the first argument, or by modifying the tool's name to end with 'gcov'. Differential Revision: http://reviews.llvm.org/D4445 llvm-svn: 216300
* llvm-cov: Handle missing source files as GCOV doesJustin Bogner2014-05-073-0/+91
| | | | | | | | | | | If the source files referenced by a gcno file are missing, gcov outputs a coverage file where every line is simply /*EOF*/. This also occurs for lines in the coverage that are past the end of a file that is found. This change mimics gcov. llvm-svn: 208149
* llvm-cov: Implement --no-outputJustin Bogner2014-05-071-0/+6
| | | | | | | | In gcov, there's a -n/--no-output option, which disables the writing of any .gcov files, so that it emits only the summary info on stdout. This implements the same behaviour in llvm-cov. llvm-svn: 208148
* llvm-cov: Fix handling of line zero appearing in a line tableJustin Bogner2014-05-022-0/+0
| | | | | | | | | | | | | Reading line tables in llvm-cov was pretty broken, but would happen to work as long as no line in the table was 0. It's not clear to me whether a line of zero *should* show up in these tables, but deciding to read a string in the middle of the line table is certainly the wrong thing to do if it does. I've also added some comments, as trying to figure out what this block of code was doing was fairly unpleasant. llvm-svn: 207866
* llvm-cov: Add support for gcov's --long-file-names optionJustin Bogner2014-04-232-0/+16
| | | | | | | | GCOV provides an option to prepend output file names with the source file name, to disambiguate between covered data that's included from multiple sources. Add a flag to llvm-cov that does the same. llvm-svn: 207035
* llvm-cov: Handle functions with no line numberJustin Bogner2014-03-262-0/+0
| | | | | | | | | Functions may in an instrumented binary but not in the original source when they're inserted by the compiler or the runtime. These functions aren't meaningful to the user, so teach llvm-cov to skip over them instead of crashing. llvm-svn: 204863
* llvm-cov: Implement the preserve-paths flagJustin Bogner2014-02-0410-4/+107
| | | | | | | | | | | | | | | | Until now, when a path in a gcno file included a directory, we would emit our .gcov file in that directory, whereas gcov always emits the file in the current directory. In doing so, this implements gcov's strange name-mangling -p flag, which is needed to avoid clobbering files when two with the same name exist in different directories. The path mangling is a bit ugly and only handles unix-like paths, but it's simple, and it doesn't make any guesses as to how it should behave outside of what gcov documents. If we decide this should be cross platform later, we can consider the compatibility implications then. llvm-svn: 200754
* llvm-cov: Implement the object-directory flagJustin Bogner2014-02-042-0/+87
| | | | llvm-svn: 200741
* llvm-cov: Ignore missing .gcda filesJustin Bogner2014-02-043-0/+95
| | | | | | | | When gcov is run without gcda data, it acts as if the counts are all zero and labels the file as - to indicate that there was no data. We should do the same. llvm-svn: 200740
* llvm-cov: Added -f option for function summaries.Yuchen Wu2013-12-192-0/+103
| | | | | | | | | | | Similar to the file summaries, the function summaries output line, branching and call statistics. The file summaries have been moved outside the initial loop so that all of the function summaries can be outputted before file summaries. Also updated test cases. llvm-svn: 197633
* llvm-cov: Print coverage summary to STDOUT.Yuchen Wu2013-12-182-0/+21
| | | | | | | | | | | | File summaries will now be optionally outputted which will give line, branching and call coverage info. Unfortunately, clang's current instrumentation does not give enough information to deduce function calls, something that gcc is able to do. Thus, no calls are always outputted to be consistent with gcov output. Also updated tests. llvm-svn: 197606
* llvm-cov: Added -c option for branch counts.Yuchen Wu2013-12-182-0/+174
| | | | | | | | | This will cause llvm-cov to output branch counts instead of branch probabilities. -b must be enabled. Also updated tests. llvm-svn: 197594
* llvm-cov: Added -u option for unconditional branch info.Yuchen Wu2013-12-162-0/+174
| | | | | | | | | Outputs branch information for unconditional branches in addition to conditional branches. -b option must be enabled. Also updated tests. llvm-svn: 197432
* llvm-cov: Added -b option for branch probabilities.Yuchen Wu2013-12-132-0/+146
| | | | | | | | | | | This option tells llvm-cov to print out branch probabilities when a basic block contains multiple branches. It also prints out some function summary info including the number of times the function enters, the percent of time it returns, and how many blocks were executed. Also updated tests. llvm-svn: 197198
* llvm-cov: Added -a option for block data.Yuchen Wu2013-12-104-0/+121
| | | | | | | | | | | | | | | Similar to gcov, llvm-cov will now print out the block count at the end of each block. Multiple blocks can end on the same line. One computational difference is by using -a, llvm-cov will no longer simply add the block counts together to form a line count. Instead, it will take the maximum of the block counts on that line. This has a similar effect to what gcov does, but generates more correct counts in certain scenarios. Also updated tests. llvm-svn: 196856
* llvm-cov: Added test.h header to tests.Yuchen Wu2013-12-076-80/+85
| | | | llvm-svn: 196632
* llvm-cov: Regenerated gcov files with r195513 changes.Yuchen Wu2013-12-062-0/+0
| | | | llvm-svn: 196609
* llvm-cov: Changed extension from .llcov to .gcov.Yuchen Wu2013-12-051-0/+0
| | | | llvm-svn: 196530
* Un-revert r196358: "llvm-cov: Added support for function checksums."Daniel Jasper2013-12-046-0/+0
| | | | | | And add the proper fix. llvm-svn: 196367
* Revert r196358: "llvm-cov: Added support for function checksums."Daniel Jasper2013-12-046-0/+0
| | | | | | | This currently breaks clang/test/CodeGen/code-coverage.c. The root cause is that the newly introduced access to Funcs[j] is out of bounds. llvm-svn: 196365
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