Commit Graph

384 Commits

Author SHA1 Message Date
Justin Bogner c6af350698 llvm-cov: Implement the preserve-paths flag
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
2014-02-04 10:45:02 +00:00
Justin Bogner f69557e670 llvm-cov: Implement the object-directory flag
llvm-svn: 200741
2014-02-04 06:41:43 +00:00
Justin Bogner 93d1edbb7d llvm-cov: Ignore missing .gcda files
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
2014-02-04 06:41:39 +00:00
Justin Bogner b35695869a llvm-cov: Accept the long forms of gcov options
This is a bit imperfect, as these options don't show up in the help as
is and single dash variants are accepted, which differs from gcov.
Unfortunately, this seems to be as good as it gets with the cl::opt
machinery, so it'll do as an incremental step.

llvm-svn: 200419
2014-01-29 21:31:47 +00:00
Justin Bogner 84e7a35ca8 llvm-cov: Improve help message text
This Properly capitalizes and clarifies the help output from
llvm-cov. It also puts the llvm-only / non-gcov-compatible options in
their own category.

llvm-svn: 200418
2014-01-29 21:31:45 +00:00
Justin Bogner a99a3902a5 llvm-cov: Expect a source file as a positional parameter
Currently, llvm-cov isn't command-line compatible with gcov, which
accepts a source file name as its first parameter and infers the gcno
and gcda file names from that. This change keeps our -gcda and -gcno
options available for convenience in overriding this behaviour, but
adds the required parameter and inference behaviour as a compatible
default.

llvm-svn: 200417
2014-01-29 21:31:34 +00:00
Yuchen Wu bb6a477131 llvm-cov: Added -f option for function summaries.
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
2013-12-19 00:29:25 +00:00
Yuchen Wu 73dc38187b llvm-cov: Added -c option for branch counts.
This will cause llvm-cov to output branch counts instead of branch
probabilities. -b must be enabled.

Also updated tests.

llvm-svn: 197594
2013-12-18 18:40:15 +00:00
Yuchen Wu 66d93b82ac llvm-cov: Added -u option for unconditional branch info.
Outputs branch information for unconditional branches in addition to
conditional branches. -b option must be enabled.

Also updated tests.

llvm-svn: 197432
2013-12-16 22:14:02 +00:00
Yuchen Wu 342714c11c llvm-cov: Added -b option for branch probabilities.
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
2013-12-13 01:15:07 +00:00
Yuchen Wu 8c6bb5f4d4 llvm-cov: Added -a option for block data.
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
2013-12-10 01:02:07 +00:00
Yuchen Wu c3e6424722 llvm-cov: Conformed headers.
llvm-svn: 196541
2013-12-05 22:02:29 +00:00
Yuchen Wu bec4e90769 llvm-cov: Split GCOVFile's read into GCNO and GCDA.
This splits the file-scope read() function into readGCNO() and
readGCDA(). Also broke file format read into functions that first read
the file type, then check the version.

llvm-svn: 196353
2013-12-04 04:49:23 +00:00
Yuchen Wu 26326ad396 llvm-cov: Removed output to STDOUT/specified file.
Instead of asking the user to specify a single file to output coverage
info and defaulting to STDOUT, llvm-cov now creates files for each
source file with a naming system of: <source filename> + ".llcov".

This is what gcov does and although it can clutter the working directory
with numerous coverage files, it will be easier to hook the llvm-cov
output to tools which operate on this assumption (such as lcov).

llvm-svn: 196184
2013-12-03 00:57:11 +00:00
Benjamin Kramer 67421c1087 llvm-cov: Clean up memory leaks.
llvm-svn: 194799
2013-11-15 09:44:17 +00:00
NAKAMURA Takumi bef6171f7d llvm-cov requires IR and Support as libraries. Instrumentation would be overkill.
llvm-svn: 194695
2013-11-14 11:45:16 +00:00
Yuchen Wu e68c5f8242 Revert "llvm-cov: Added command-line option to change dir."
This reverts commit d8acf0078cf363252727acff00f85ae8074f95b3.

llvm-svn: 194040
2013-11-05 01:56:29 +00:00
Yuchen Wu 446e991f44 llvm-cov: Added command-line option to change dir.
This will allow for much easier testing when the input files are in a
different folder from the test script.

llvm-svn: 194034
2013-11-05 01:20:41 +00:00
Yuchen Wu dbcf19758d Added command-line option to output llvm-cov to file.
Added -o option to llvm-cov. If no output file is specified, it defaults
to STDOUT.

llvm-svn: 193899
2013-11-02 00:09:17 +00:00
Yuchen Wu 9194d7b063 Updated llvm-cov's OVERVIEW description
llvm-svn: 193732
2013-10-31 02:01:24 +00:00
Bob Wilson 3461bedbfd Change llvm-cov output formatting to be more similar to gcov.
- Replaced tabs with proper padding
- print() takes two arguments, which are the GCNO and GCDA filenames
- Files are listed at the top of output, appended by line 0
- Stripped strings of trailing \0s
- Removed last two lines of whitespace in output

Patch by Yuchen Wu!

llvm-svn: 193148
2013-10-22 05:09:41 +00:00
Bob Wilson 2f19d42f6e Move the printing of llvm-cov information out from collectLineCounts().
collectLineCounts() should only organize the output data. This is done in
anticipation of subsequent changes which will pass in GCNO and GCDA filenames
into the print function where it is printed similar to the gcov output.

Patch by Yuchen Wu!

llvm-svn: 193134
2013-10-22 00:09:03 +00:00
Bill Wendling 3fdaa244e1 Remove accidental commit.
llvm-svn: 167544
2012-11-07 18:39:32 +00:00
Bill Wendling f720bf64d4 Add comment describing what's going on here.
llvm-svn: 167525
2012-11-07 05:19:04 +00:00
Daniel Dunbar 27a7489a03 LLVMBuild: Remove trailing newline, which irked me.
llvm-svn: 146409
2011-12-12 19:48:00 +00:00
Daniel Dunbar 57fb3ae997 LLVMBuild: Add description files for the LLVM tools.
llvm-svn: 144417
2011-11-11 22:59:39 +00:00
Daniel Dunbar 96d812a68d build: Tidy up a bunch of tool Makefiles, and simplify where possible using the
new all-targets pseudo-component.

llvm-svn: 142401
2011-10-18 19:27:24 +00:00
Devang Patel 0a2fd00de5 Update cmake list.
llvm-svn: 141104
2011-10-04 19:38:16 +00:00
Devang Patel 8dfb65516b Put GCOVFile and other related interface in a common header so that llvm-cov tool can share it with GCOV writer.
llvm-svn: 141095
2011-10-04 17:24:48 +00:00
Devang Patel e5a8f2f9f3 Simplify.
llvm-svn: 140789
2011-09-29 17:06:40 +00:00
Devang Patel eec5c5bf6e Clarify comments.
llvm-svn: 140787
2011-09-29 16:52:53 +00:00
Devang Patel 1e6ee351fc Remove unnecessary and unused data member.
llvm-svn: 140786
2011-09-29 16:48:44 +00:00
Devang Patel a9e8a2504c Cosmetic changes, as per Nick's review.
llvm-svn: 140785
2011-09-29 16:46:47 +00:00
Devang Patel 3714065a94 Introduce llvm-cov.
Add llvm-cov skeleton. It has initial support to read coverage info generated by GCOVProfiling.cpp. 
Today, you can do
prompt> clang a.c -ftest-coverage -fprofile-arcs -o a
prompt> ./a
prompt> llvm-cov -gcno a.gcno -gcda a.gcda 
a.c
 :	#include "a.h"
 :	
 :	int main() {
 :		int i = 0;
 :		if (i) {
1:			int j = 0;
1:			j = 1;
1:		} else {
 :			int k = 1;
 :			k = 2;
 :		}
1:		return 0;
 :	}
 :	
 :	

llvm-svn: 140712
2011-09-28 18:50:00 +00:00