| 2d1fdb26e458c4ddc04155c1d421bced3ba90cd0 |
|
29-May-2014 |
Stephen Hines <srhines@google.com> |
Update compiler-rt aosp/master for 3.5 (r209699) rebase.
Change-Id: I158a30186f0faea2e2400e9dfdd878db2eb40e90
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 7bb5d49a6402c5a1d20911e6992ebb7e9e4468c4 |
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12-Nov-2013 |
Yuchen Wu <yuchenericwu@hotmail.com> |
Added summary info to GCDAProfiling.
This function will be called by GCOVProfiling to write and update object
and program summaries to be read in by llvm-cov.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@194499 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 08a0e08a8df2511452a2f2e5cdcf7b1c0096f088 |
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11-Sep-2013 |
Bill Wendling <isanbard@gmail.com> |
Fix typo
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@190543 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 7ab94ea0d5182da0e0ed1dc2c3cf40beccbf25b9 |
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10-Sep-2013 |
Bill Wendling <isanbard@gmail.com> |
Don't allow a NULL-length file. Try to revert to the buffered version.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@190359 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 007a9771d648ff5e8f6e01a3984f007272e87e37 |
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27-Jun-2013 |
Bill Wendling <isanbard@gmail.com> |
Revert hack that omits errno on Darwin platforms. We now have an acceptable 'errno' header.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@185106 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| cf5fb62c0206c6544c464fa1b414bbfa26cb3244 |
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26-Jun-2013 |
Chandler Carruth <chandlerc@gmail.com> |
Fix a use after free I introduced and that Bill caught in code review
(thanks!) by deferring the free of the filename until we finish writing
the coverage data to that file.
Bill, let me know if you'd prefer a different approach!
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184895 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 7caabbd43ef867fa93317bef61924197b97ea1c7 |
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25-Jun-2013 |
Bill Wendling <isanbard@gmail.com> |
Don't use 'errno.h' on Apple just yet. This breaks for some of our buildbots.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184878 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 254abfa43326c2d49143529c26a86a27356e1243 |
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25-Jun-2013 |
Chandler Carruth <chandlerc@gmail.com> |
Address a few of the issues in GCDAProfiling I noted when looking
through Bill's patch:
1) Correctly test the file descriptor after the sceond attempt at
creating the file.
2) Make the filename a global so that we can issue error messages from
other routines.
3) Check errno in several places and print it out so that errors are
easier to track down.
I don't really expect any of these to fix the current failures I'm
seeing, but I'm hopeful they'll at least let me debug them.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@184799 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 2811a0ccbadb9f8c50fe0b6aa8e4e39193fef4e7 |
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23-May-2013 |
Bill Wendling <isanbard@gmail.com> |
Don't override 'mode' and cleanup some variable names.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@182599 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 468eb10c6051c6f93df75cfc34fc98180dea1bbf |
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23-May-2013 |
Bill Wendling <isanbard@gmail.com> |
Add 'mode' parameter when using 'O_CREAT'. Thanks to Evgeniy for pointing this out.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@182598 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| d06f2fc03087e7cccda19bd550bf6fb3bc2f5ae7 |
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23-May-2013 |
Bill Wendling <isanbard@gmail.com> |
Performance improvement.
Using fwrite and fread was very *very* slow. The resulting code was multiple
times slower than GCC's implementation of gcov. Replace the fwrite/fread system
with an mmap() version.
If the `.gcda' file doesn't exist, we (re)allocate a buffer that we write
into. That gets written to the `.gcda' file in one chunk. If the `.gcda' file
already exists, we simply mmap() the file, modify the mapped data, and use
msync() to write the contents out to disk. It's much easier than implementing
our own buffering scheme, and we don't have to use fwrite's and fread's
buffering.
For those who are numbers-oriented, here are some timings:
GCC Verison
-----------
`.gcda' files don't exist: 23s
`.gcda' files do exist: 14s
LLVM Version (before this change)
---------------------------------
`.gcda' files don't exist: 28s
`.gcda' files do exist: 28s
LLVM Version (with this change)
-------------------------------
`.gcda' files don't exist: 18s
`.gcda' files do exist: 4s
It's a win-win-win-win-lose-win-win scenario!
<rdar://problem/13466086>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@182563 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 2a46a60510948b5005d62025fbba307a0323ed8d |
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15-May-2013 |
Bill Wendling <isanbard@gmail.com> |
Try to improve performance by using a read/write buffer instead of I/O.
The calls to fwrite/fread can be very expensive. GCC avoids this by using a
buffer to read and write from the file, thus limiting the number of fwrite/fread
calls.
<rdar://problem/13466086>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@181924 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 346e348af5740db3660c84490d2c1bbba7c570e5 |
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04-May-2013 |
Bill Wendling <isanbard@gmail.com> |
I was wrong in my testing.
There isn't a speedup when using unbuffered I/O. It slows it down in fact.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@181060 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| d83a6d8bafbf2afa3ebcf9e006bf0c7414f9b2dc |
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03-May-2013 |
Bill Wendling <isanbard@gmail.com> |
Use unbuffered I/O. This reduces the runtime by about half. Our implementation is now only about 5 times slower than gcc's.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@180980 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 4aa08fae9b02ba9a0701fe27f58e2645d236798b |
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22-Apr-2013 |
Bill Wendling <isanbard@gmail.com> |
Improve performance of file I/O.
The fread / fwrite calls were happening for each timer. However, that could be
pretty expensive for a large number of timers. Instead, read and write the
timers in one call.
This gives ~10% speedup in compilation time.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@179990 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 84b46d300c7a4f1c3ea4e452791de7733ce0d143 |
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20-Mar-2013 |
Bill Wendling <isanbard@gmail.com> |
Create a coverage initialization function.
This function replaces the call of `atexit' from being generated in the compile
units. Basically, it registers the "writeout" and "flush" functions (if
present). It will generate calls to the `atexit' function for cleanups and final
writeout functions, but only once. This is better than checking for `main',
because a library may not have a `main' function in it.
<rdar://problem/12439551>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177578 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| c533304a95fbed444ea02f5f9e7c6e37debd1c43 |
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19-Mar-2013 |
Bill Wendling <isanbard@gmail.com> |
Add a way to register and execute "writeout" functions.
It may be prohibitively expensive to write out >1000 files at the same time. So
we would rather emit them serially. These functions allow the GCOV
implementation to register the functions that writeout the GCOV information per
compile unit. At exit, they are written.
<rdar://problem/12439551>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177436 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| a539183bf29a42ae584244106e48c99c6630e8cd |
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18-Mar-2013 |
Bill Wendling <isanbard@gmail.com> |
Add some GCOV functions that register all of the __llvm_gcov_flush() functions.
The __llvm_gcov_flush() functions only work for the local compile unit. However,
when __gcov_flush() is called, the user expects all of the counters to be
flushed, not just the ones in the current compile unit.
This adds some library functions that register the flush functions. It also
defined __gcov_flush() so that loops through that list and calls the functions.
PR15191 & <rdar://problem/13167507>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@177337 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 07020829d181dcd352ff6f01eab4d353c37a19b6 |
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09-Mar-2013 |
Nick Lewycky <nicholas@mxc.ca> |
Don't emit the extra checksum into the .gcda file if the user hasn't asked for
it. Fortunately, versions of gcov that predate the extra checksum also ignore
any extra data, so this isn't a problem. This matches the API change made in
r176745.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176746 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 42296c7b5d69e6d79390005b6e1861ca66e3a0cb |
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07-Mar-2013 |
Nick Lewycky <nicholas@mxc.ca> |
Take the GCDA version string as an input to llvm_gcda_start_file.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176618 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 58c400c58019070045e548bb5173b22af092f314 |
|
28-Feb-2013 |
Nick Lewycky <nicholas@mxc.ca> |
Holy macaroons, somebody made a copy of llvm/runtime/profile/GCDAProfiling.c,
didn't delete the original, and now they've diverged. I have no idea what's
going on. Apply my patch in r176173 to this one too, this one looks newer?
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@176236 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 9c994aae092ddbc786ceb27668f38571de926e5b |
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17-Sep-2012 |
Bill Wendling <isanbard@gmail.com> |
Remove debugging code.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@164052 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| df11061d6df6e7018c34fc23274c40c36db4731a |
|
14-Sep-2012 |
Bill Wendling <isanbard@gmail.com> |
Remove unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163930 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 843f359862fb8370eacf8aed4e749c46a92b2e38 |
|
14-Sep-2012 |
Bill Wendling <isanbard@gmail.com> |
Add support for reading the GCDA file and merging the arc information.
With the advent of the __llvm_gcov_flush function, we need to be able to merge
counts into the .gcda files in an intelligent manner. This involves reading the
file if it exists, adding the counts together, and then writing the results.
<rdar://problem/12185886>
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@163923 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 666772c9934fac81d457c74d3eeca381652d0873 |
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15-Jun-2012 |
Bill Wendling <isanbard@gmail.com> |
Free the allocated filename. Found by clang static analyzer.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@158514 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
|
| ec63f456de18b9ac75d7546f8a53beb6ce048e67 |
|
28-May-2012 |
Bill Wendling <isanbard@gmail.com> |
Add support for the GCOV_PREFIX_STRIP env variable which tries to strip off the first 'n' directories from the filename.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157574 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
|
| 015b7e06622b7538419d8c158c4c84b781310096 |
|
28-May-2012 |
Bill Wendling <isanbard@gmail.com> |
Simplify the logic that tries to open the GCDA file at all costs. Basically, if
we can't open the file even after creating all of the directories to it, then
just give up.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157572 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
|
| 906d5a5d38f2984a9b78a0786016a3d67d0798e9 |
|
28-May-2012 |
Bill Wendling <isanbard@gmail.com> |
* A bit of cleanup of the 'recursive_mkdir'. No functionality change.
* Check for absolute paths before using the GCOV_PREFIX.
* Don't add an ending path separator if there's already one.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157571 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
|
| de47cb8f12474c7c528a84de0ea73c743c33f015 |
|
28-May-2012 |
Bill Wendling <isanbard@gmail.com> |
Don't use 'strrchr', which isn't implemented here yet.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157560 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 5a240c5c1746d07351fc38deb81c1794e8668d15 |
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28-May-2012 |
Bill Wendling <isanbard@gmail.com> |
Sync with old GCOV runtime library's file.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157559 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
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| 8c88119d6334a470e3ad638c5a1f1b42c4258ac9 |
|
17-Nov-2011 |
Daniel Dunbar <daniel@zuster.org> |
lib: Import GCDA profiling support from LLVM.
- I'm in the process of moving this here but it will live in both places until
the ancilliary support is ready.
- Currently unused.
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@144865 91177308-0d34-0410-b5e6-96231b3b80d8
/external/compiler-rt/lib/profile/GCDAProfiling.c
|