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* Update the file headers across all of the LLVM projects in the monorepoChandler Carruth2019-01-191-4/+3
| | | | | | | | | | | | | | | | | to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
* [Bug 39548][Clang] PGO bootstrap fails with python3: errors in perf-helper.pySerge Guelton2019-01-111-2/+2
| | | | | | | | | | | Current clang fail to bootstrap in PGO mode when only python3 is available, because perf-helper.py is not compatible with python3. Commited on behalf of Romain Geissler. Differential Revision: https://reviews.llvm.org/D54071 llvm-svn: 350955
* Portable Python script across Python versionSerge Guelton2018-12-181-1/+1
| | | | | | | | Make scripts more future-proof by importing most __future__ stuff. Differential Revision: https://reviews.llvm.org/D55208 llvm-svn: 349504
* Portable Python script across Python versionSerge Guelton2018-12-181-3/+3
| | | | | | | | | | | In Python3, dict.items, dict.keys, dict.values, zip, map and filter no longer return lists, they create generator instead. The portability patch consists in forcing an extra `list` call if the result is actually used as a list. `map` are replaced by list comprehension and `filter` by filtered list comprehension. Differential Revision: https://reviews.llvm.org/D55197 llvm-svn: 349501
* Revert "[Order Files] Remove dtrace predicate"Chris Bieneman2016-08-021-1/+2
| | | | | | | | This reverts commit r277487. Removing the probe predicate was a red herring. It results in more symbols being placed in the final order file, but they are symbols from outside the clang image. llvm-svn: 277492
* [Order Files] Remove dtrace predicateChris Bieneman2016-08-021-2/+1
| | | | | | Having the dtrace predicate setup to only show probes in clang filters out static initializers executed by dyld, which we do want included in the order files. llvm-svn: 277487
* [Order Files] Fixing an error in the perf-helper scriptChris Bieneman2016-08-011-1/+1
| | | | | | Dtrace probemod needs to be based on the first argument of the command, not the first argument of the args. This error was introduced a while back when I added support for skipping the driver and invoking cc1 directly. llvm-svn: 277401
* [Perf-Helper] Add logging for dtrace commandsChris Bieneman2016-07-291-0/+1
| | | | | | Logging the dtrace command into the top of the dtrace log is useful when debugging why the order file generation is flaky. llvm-svn: 277234
* [perf-training] Ignore 'Profile Note' warnings from the runtimeVedant Kumar2016-06-141-0/+1
| | | | | | | | | | | | | | | After r272599, -DLLVM_BUILD_INSTRUMENTED passes a default argument to -fprofile-instr-generate. This confuses the perf-helper script because the runtime emits a note stating that the default is overridden by the LLVM_PROFILE_FILE environment variable. Change the perf-helper script s.t it does not treat these notes as failures. This isn't a strictly NFC change, but I don't see a simple way to add a test for it. llvm-svn: 272695
* Remove stray semi-colon in *.py file, NFCVedant Kumar2016-06-141-1/+1
| | | | llvm-svn: 272610
* [Perf-training] Using os.devnull instead of a temp fileChris Bieneman2016-03-221-4/+1
| | | | | | | | This is based on post-commit feedback from Vedant. Totally didn't know that existed and worked on Windows. Thanks Vedant! llvm-svn: 264064
* [Perf-training] Cleanup based on feedback from Sean SilvasChris Bieneman2016-03-221-11/+6
| | | | | | Sean provided feedback based on r257934 on cfe-commits. This change addresses that feedback. llvm-svn: 264063
* [Perf-training] Fixing an issue with multi-threading PGO generationChris Bieneman2016-03-221-2/+5
| | | | | | When LIT parallelizes the profraw file generation we need to generate unique temp filenames then clean them up after the driver executes. llvm-svn: 264021
* [Perf-training] Adding support for tests to skip the clang driverChris Bieneman2016-03-211-0/+60
| | | | | | | | | | This patch adds a new set of substitutions to the lit run lines for order files and PGO generation which run the clang driver to get the cc1 command, then execute the cc1 command directly. This allows the scripts to bypass profiling the clang driver over and over again. The approach in this patch was discussed via IRC with Sean Silvas. Special thanks to Daniel Dunbar whose out-of-tree code I liberally plagiarized. llvm-svn: 263997
* [CMake] [Order-files] Use print_function as an attempt at being forward ↵Chris Bieneman2016-01-151-17/+19
| | | | | | | | compatible. Based on feedback from bogner. llvm-svn: 257936
* [CMake] Support generation of linker order files using dtraceChris Bieneman2016-01-151-12/+315
| | | | | | | | | | | | | | | | | | | Summary: This patch extends the lit-based perf-training tooling supplied for PGO data generation to also generate linker order files using dtrace. This patch should work on any system that has dtrace. If CMake can find the dtrace tool it will generate a target 'generate-order-file' which will run the per-training tests wrapped by dtrace to capture function entries. There are several algorithms implemented for sorting the order files which can be experimented with for best performance. The dtrace wrapper also supports bot oneshot and pid probes. The perf-helper.py changes to support order file construction are ported from internal changes by ddunbar; he gets all the credit for the hard work here, I just copy and pasted. Note: I've tested these patches on FreeBSD and OS X 10.10. Reviewers: ddunbar, bogner, silvas Subscribers: llvm-commits, emaste Differential Revision: http://reviews.llvm.org/D16134 llvm-svn: 257934
* [CMake] Add support for generating profdata for clang from training filesChris Bieneman2015-12-161-0/+46
Summary: This patch adds support for using LIT to drive generating PGO profile data for clang. This first pass implementation should work on Linux and Unix based platforms. If you build clang using CMake with LLVM_BUILD_INSTRUMENTED=On the CMake build generates a generate-profdata target that will use the just-built clang to build any test files (see hello_world.cpp as an example). Each test compile will generate profraw files for each clang process. After all tests have run CMake will merge the profraw files using llvm-profdata. Future opportunities for extension: * Support for Build->Profile->Build bootstrapping * Support for linker order file generation using a similar mechanism and the same training data * Support for Windows Reviewers: dexonsmith, friss, bogner, cmatthews, vsk, silvas Subscribers: cfe-commits Differential Revision: http://reviews.llvm.org/D15462 llvm-svn: 255740
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