Commit Graph

120 Commits

Author SHA1 Message Date
Florian Hahn 0814fcb727 [docs] Clarify ENABLE_MODULES uses Clang Header Modules.
Suggested post-commit by @dblaikie, thanks!
2020-08-19 17:38:34 +01:00
Kazu Hirata a31b3893c7 [docs] Fix typos 2020-08-09 19:31:49 -07:00
Florian Hahn 05aa29efd7 [docs] Mention LLVM_ENABLE_MODULES. 2020-08-04 16:59:39 +01:00
Louis Dionne afa1afd410 [CMake] Bump CMake minimum version to 3.13.4
This upgrade should be friction-less because we've already been ensuring
that CMake >= 3.13.4 is used.

This is part of the effort discussed on llvm-dev here:

  http://lists.llvm.org/pipermail/llvm-dev/2020-April/140578.html

Differential Revision: https://reviews.llvm.org/D78648
2020-07-22 14:25:07 -04:00
Jean-Michel Gorius b2f2adee00
[llvm][docs] Document the LLVM_INSTALL_UTILS CMake option (NFC) 2020-06-18 15:31:13 +02:00
Zola Bridges 0f12480bd1 [dfsan] Add "DataFlow" option to LLVM_USE_SANITIZER
Summary:
This patch add the dataflow option to LLVM_USE_SANITIZER and documents
it.

Tested via check-cxx (wip to fix the errors).

Reviewers: morehouse, #libc!

Subscribers: mgorny, cfe-commits, libcxx-commits

Tags: #clang, #libc

Differential Revision: https://reviews.llvm.org/D78390
2020-04-20 10:30:52 -07:00
Sylvestre Ledru 72fd1033ea Doc: Links should use https 2020-03-22 22:49:33 +01:00
Petr Hosek 8a8778f25f [CMake] Enable the use of -ffile-prefix-map
This handles not paths embedded in debug info, but also in sources.
Since the use of this flag is controlled by an option, rather than
replacing the new option, we add a new option.

Differential Revision: https://reviews.llvm.org/D76018
2020-03-19 15:14:15 -07:00
Eric Christopher 102814b4d3 Continue removing llgo. 2020-02-10 10:33:58 -08:00
Nico Weber fb5fafb23c Make LLVM_APPEND_VC_REV=OFF affect clang, lld, and lldb as well.
When LLVM_APPEND_VC_REV=OFF is set, the current git hash is no
longer embedded into binaries (mostly for --version output).
Without it, most binaries need to relink after every single
commit, even if they didn't change otherwise (due to, say,
a documentation-only commit).

LLVM_APPEND_VC_REV is ON by default, so this doesn't change the
default behavior of anything.

With this, all clients of GenerateVersionFromVCS.cmake honor
LLVM_APPEND_VC_REV.

Differential Revision: https://reviews.llvm.org/D72855
2020-01-16 19:04:08 -05:00
Tom Stellard 3ffbf9720f [cmake] Remove LLVM_{BUILD,LINK}_LLVM_DYLIB options on Windows
Summary: The options aren't supported so they can be removed.

Reviewers: beanz, smeenai, compnerd

Reviewed By: compnerd

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69877
2019-11-08 10:37:16 -08:00
Saleem Abdulrasool 2724d9e129 build: remove `LLVM_CXX_STD` extension point
This extension point is not needed. Provide the equivalent option
through `CMAKE_CXX_STANDARD` which mirrors the previous extension point. Rely on
CMake to provide the check for the compiler instead.
2019-10-25 11:51:47 -07:00
Kit Barton efd7caaa4e Fix broken sphinx link in CMake.rst.
Reviewers: delcypher, beanz

Subscribers: mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69325
2019-10-22 14:49:58 -07:00
Sylvestre Ledru 751e0bb6af Explicit in the doc the current list of projects (with easy copy and paste)
llvm-svn: 375339
2019-10-19 09:55:24 +00:00
Sylvestre Ledru 963e0d6755 Make it clear in the doc that 'all' in LLVM_ENABLE_PROJECTS does install ALL projects
llvm-svn: 375337
2019-10-19 09:27:14 +00:00
Sylvestre Ledru 4e281f70ca doc update: explain that Z3 is only for clang SA - thanks to LebedevRI for the suggestion
llvm-svn: 371110
2019-09-05 19:50:56 +00:00
Sylvestre Ledru 37fcd3a33e document the LLVM_ENABLE_Z3_SOLVER option
llvm-svn: 371109
2019-09-05 19:38:15 +00:00
Erich Keane 0e85f18ded Add support in CMake to statically link the C++ standard library.
It is sometimes useful to have the C++ standard library linked into the
assembly when compiling clang, particularly when distributing a compiler
onto systems that don't have a copy of stdlibc++ or libc++ installed.

This functionality should work with either GCC or Clang as the host
compiler, though statically linking libc++ (as may be required for
licensing purposes) is only possible if the host compiler is Clang with
a copy of libc++ available.

Differential Revision: https://reviews.llvm.org/D65603

llvm-svn: 368907
2019-08-14 19:55:59 +00:00
Erich Keane 441f119789 Fix spacing of LLVM_USE_PERF in CMake.rst that caused it to be tabbed in funny
llvm-svn: 367585
2019-08-01 17:30:25 +00:00
Erich Keane 1328cd0e37 Document LLVM_ENABLE_LIBCXX in CMake.rst
llvm-svn: 367584
2019-08-01 17:30:21 +00:00
Anusha Basana f7fbd6cb9f [build] Add the ability to create a symlink for lipo
Add user enabled option to create lipo with symlink to llvm-lipo
Used rL326381 for reference.

Differential Revision: https://reviews.llvm.org/D65477

llvm-svn: 367444
2019-07-31 16:46:57 +00:00
Sylvestre Ledru 116e58e292 remove a duplicate declaration
llvm-svn: 366205
2019-07-16 12:05:54 +00:00
Sylvestre Ledru eea828054d Document the LLVM_ENABLE_BINDINGS option
llvm-svn: 366204
2019-07-16 11:59:17 +00:00
Sven van Haastregt 1bc2cccf18 Remove some autoconf references from docs and comments
The autoconf build system support has been removed a while ago, remove
some outdated references.

Differential Revision: https://reviews.llvm.org/D63608

llvm-svn: 365013
2019-07-03 09:57:59 +00:00
J. Ryan Stinnett d45eaf9405 [Docs] Modernize references to macOS
Summary:
This updates all places in documentation that refer to "Mac OS X", "OS X", etc.
to instead use the modern name "macOS" when no specific version number is
mentioned.

If a specific version is mentioned, this attempts to use the OS name at the time
of that version:

* Mac OS X for 10.0 - 10.7
* OS X for 10.8 - 10.11
* macOS for 10.12 - present

Reviewers: JDevlieghere

Subscribers: mgorny, christof, arphaman, cfe-commits, lldb-commits, libcxx-commits, llvm-commits

Tags: #clang, #lldb, #libc, #llvm

Differential Revision: https://reviews.llvm.org/D62654

llvm-svn: 362113
2019-05-30 16:46:22 +00:00
Saleem Abdulrasool a7c766b51d build: add option to disable unwind tables
The unwind tables (`.eh_frame`, `.arm.extab`) add a significant chunk of data to
the final binaries.  These should not be needed normally, particularly when
exceptions are disabled.  This enables shrinking `lldb-server` by ~18% (3 MiB)
when built with gold.

llvm-svn: 359819
2019-05-02 19:37:26 +00:00
Justin Bogner 25de7691a0 [CMake] Replace LLVM_ENABLE_CXX1Y and friends with LLVM_CXX_STD
Simplify building with particular C++ standards by replacing the
specific "enable standard X" flags with a flag that allows specifying
the standard you want directly.

We preserve compatibility with the existing flags so that anyone with
those flags in existing caches won't break mysteriously.

Differential Revision: https://reviews.llvm.org/D60399

llvm-svn: 357899
2019-04-08 10:19:17 +00:00
Shoaib Meenai f59ea25ee6 [docs] Document LLVM_ENABLE_IDE
Use some of the wording and the motivating example from r344555. The
lack of documentation was pointed out by Roman Lebedev.

Differential Revision: https://reviews.llvm.org/D58286

llvm-svn: 354167
2019-02-15 20:40:26 +00:00
Rong Xu 017bbd96cf [Cmake] Add an option to build LLVM using the experimental new pass manager
Add LLVM_USE_NEWPM to build LLVM using the experimental new pass manager.

Differential Revision: http://reviews.llvm.org/D57068

llvm-svn: 353550
2019-02-08 19:31:03 +00:00
JF Bastien 388cefa78d Bump minimum toolchain version
Summary:
The RFC on moving past C++11 got good traction:
  http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html

This patch therefore bumps the toolchain versions according to our policy:
  llvm.org/docs/DeveloperPolicy.html#toolchain

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits, mehdi_amini, jyknight, rsmith, chandlerc, smeenai, hans, reames, lattner, lhames, erichkeane

Differential Revision: https://reviews.llvm.org/D57264

llvm-svn: 353374
2019-02-07 05:20:00 +00:00
JF Bastien 115b64b3d1 Revert "Bump minimum toolchain version"
Reverting D57264 again, it looks like we're down to two bots that need fixing:

polly-amd64-linux
polly-arm-linux

They both have old versions of libstdc++ and recent clang.

llvm-svn: 352954
2019-02-02 06:01:12 +00:00
JF Bastien c9a69acc7e Bump minimum toolchain version
Summary:
The RFC on moving past C++11 got good traction:
  http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html

This patch therefore bumps the toolchain versions according to our policy:
  llvm.org/docs/DeveloperPolicy.html#toolchain

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits, mehdi_amini, jyknight, rsmith, chandlerc, smeenai, hans, reames, lattner, lhames, erichkeane

Differential Revision: https://reviews.llvm.org/D57264

llvm-svn: 352951
2019-02-02 05:15:34 +00:00
JF Bastien c6931ddc3d Revert "Bump minimum toolchain version"
Looks like we still have a few bots that are sad. Let try to get them fixed!

llvm-svn: 352835
2019-02-01 04:44:39 +00:00
JF Bastien 77074f9f77 Bump minimum toolchain version
Summary:
The RFC on moving past C++11 got good traction:
  http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html

This patch therefore bumps the toolchain versions according to our policy:
  llvm.org/docs/DeveloperPolicy.html#toolchain

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits, mehdi_amini, jyknight, rsmith, chandlerc, smeenai, hans, reames, lattner, lhames, erichkeane

Differential Revision: https://reviews.llvm.org/D57264

llvm-svn: 352834
2019-02-01 04:33:21 +00:00
JF Bastien e2dedd5564 Revert "Bump minimum toolchain version"
A handful of bots are still breaking, either because I missed them in my audit,
they were offline, or something else. I'm contacting their authors, but I'll
revert for now and re-commit later.

llvm-svn: 352814
2019-01-31 23:29:39 +00:00
JF Bastien 62bb58a357 Bump minimum toolchain version
Summary:
The RFC on moving past C++11 got good traction:
  http://lists.llvm.org/pipermail/llvm-dev/2019-January/129452.html

This patch therefore bumps the toolchain versions according to our policy:
  llvm.org/docs/DeveloperPolicy.html#toolchain

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits, mehdi_amini, jyknight, rsmith, chandlerc, smeenai, hans, reames, lattner, lhames, erichkeane

Differential Revision: https://reviews.llvm.org/D57264

llvm-svn: 352811
2019-01-31 23:13:10 +00:00
JF Bastien 4675d210c5 [NFC] Factor out + document build requirements
Summary: This change factors out compiler checking / warning, and documents LLVM_FORCE_USE_OLD_TOOLCHAIN. It doesn't introduce any functional changes nor policy changes, these will come late.

Subscribers: mgorny, jkorous, dexonsmith, llvm-commits

Differential Revision: https://reviews.llvm.org/D56799

llvm-svn: 351387
2019-01-16 22:22:38 +00:00
Mark Searles b69b97cafa Fix typo: "with he MODULE" -> "with the MODULE"
Differential Revision: https://reviews.llvm.org/D56302

llvm-svn: 350400
2019-01-04 16:35:01 +00:00
Tom Stellard 2f44fbe936 cmake: Remove add_llvm_loadable_module()
Summary:
This function is very similar to add_llvm_library(),  so this patch merges it
into add_llvm_library() and replaces all calls to add_llvm_loadable_module(lib ...)
with add_llvm_library(lib MODULE ...)

Reviewers: philip.pfaffe, beanz, chandlerc

Reviewed By: philip.pfaffe

Subscribers: chapuni, mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D51748

llvm-svn: 349839
2018-12-20 22:04:08 +00:00
Reid Kleckner 403959e302 [benchmark] Re-enable benchmarks on all platforms including Windows
The assertion in MCCodeView.cpp was resolved in r340878.

This reverts both r340905 and r340836, making benchmarks build by
default everywhere.

llvm-svn: 341716
2018-09-07 21:47:00 +00:00
Matthias Braun 4f340e975e Revamp test-suite documentation
- Remove duplication: Both TestingGuide and TestSuiteMakefileGuide
  would give a similar overview over the test-suite.
- Present cmake/lit as the default/normal way of running the test-suite:
- Move information about the cmake/lit testsuite into the new
  TestSuiteGuide.rst file. Mark the remaining information in
  TestSuiteMakefilesGuide.rst as deprecated.
- General simplification and shorting of language.
- Remove paragraphs about tests known to fail as everything should pass
  nowadays.
- Remove paragraph about zlib requirement; it's not required anymore
  since we copied a zlib source snapshot into the test-suite.
- Remove paragraph about comparison with "native compiler". Correctness is
  always checked against reference outputs nowadays.
- Change cmake/lit quickstart section to recommend `pip` for installing
  lit and use `CMAKE_C_COMPILER` and a cache file in the example as that
  is what most people will end up doing anyway. Also a section about
  compare.py to quickstart.
- Document `Bitcode` and `MicroBenchmarks` directories.
- Add section with commonly used cmake configuration options.
- Add section about showing and comparing result files via compare.py.
- Add section about using external benchmark suites.
- Add section about using custom benchmark suites.
- Add section about profile guided optimization.
- Add section about cross-compilation and running on external devices.

Differential Revision: https://reviews.llvm.org/D51465

llvm-svn: 341260
2018-08-31 21:47:01 +00:00
Kirill Bobyrev b3caadf5f4 [benchmark] NFC: Turn benchmark ON on all non-Windows buildbots
The problems with benchmark build should be fixed now, but Windows
buildbots still run into errors seemingly because of the bug in
clang-cl. Because of that, benchmark shouldn't be built on Windows at
this point.

llvm-svn: 340905
2018-08-29 08:59:36 +00:00
Kirill Bobyrev a294dfa837 [benchmark] Stop building benchmarks by default
Although the benchmark regex-related build issue seems to be
fixed, it appears that benchmark library triggers some stage 2 clang-cl
bugs:

http://lab.llvm.org:8011/builders/clang-x86-windows-msvc2015/builds/13495/steps/build%20stage%202/logs/stdio

The only sensible option now is to prevent benchmark library from
building in the default configuration.

llvm-svn: 340836
2018-08-28 15:36:50 +00:00
Kirill Bobyrev 0addd170ab Pull google/benchmark library to the LLVM tree
This patch pulls google/benchmark v1.4.1 into the LLVM tree so that any
project could use it for benchmark generation. A dummy benchmark is
added to `llvm/benchmarks/DummyYAML.cpp` to validate the correctness of
the build process.

The current version does not utilize LLVM LNT and LLVM CMake
infrastructure, but that might be sufficient for most users. Two
introduced CMake variables:

* `LLVM_INCLUDE_BENCHMARKS` (`ON` by default) generates benchmark
  targets
* `LLVM_BUILD_BENCHMARKS` (`OFF` by default) adds generated
  benchmark targets to the list of default LLVM targets (i.e. if `ON`
  benchmarks will be built upon standard build invocation, e.g. `ninja` or
  `make` with no specific targets)

List of modifications:

* `BENCHMARK_ENABLE_TESTING` is disabled
* `BENCHMARK_ENABLE_EXCEPTIONS` is disabled
* `BENCHMARK_ENABLE_INSTALL` is disabled
* `BENCHMARK_ENABLE_GTEST_TESTS` is disabled
* `BENCHMARK_DOWNLOAD_DEPENDENCIES` is disabled

Original discussion can be found here:
http://lists.llvm.org/pipermail/llvm-dev/2018-August/125023.html

Reviewed by: dberris, lebedev.ri

Subscribers: ilya-biryukov, ioeric, EricWF, lebedev.ri, srhines,
dschuff, mgorny, krytarowski, fedor.sergeev, mgrang, jfb, llvm-commits

Differential Revision: https://reviews.llvm.org/D50894

llvm-svn: 340809
2018-08-28 09:42:41 +00:00
Andres Freund 376a3d3659 Add PerfJITEventListener for perf profiling support.
This new JIT event listener supports generating profiling data for
the linux 'perf' profiling tool, allowing it to generate function and
instruction level profiles.

Currently this functionality is not enabled by default, but must be
enabled with LLVM_USE_PERF=yes.  Given that the listener has no
dependencies, it might be sensible to enable by default once the
initial issues have been shaken out.

I followed existing precedent in registering the listener by default
in lli. Should there be a decision to enable this by default on linux,
that should probably be changed.

Please note that until https://reviews.llvm.org/D47343 is resolved,
using this functionality with mcjit rather than orcjit will not
reliably work.

Disregarding the previous comment, here's an example:

$ cat /tmp/expensive_loop.c

bool stupid_isprime(uint64_t num)
{
        if (num == 2)
                return true;
        if (num < 1 || num % 2 == 0)
                return false;
        for(uint64_t i = 3; i < num / 2; i+= 2) {
                if (num % i == 0)
                        return false;
        }
        return true;
}

int main(int argc, char **argv)
{
        int numprimes = 0;

        for (uint64_t num = argc; num < 100000; num++)
        {
                if (stupid_isprime(num))
                        numprimes++;
        }

        return numprimes;
}

$ clang -ggdb -S -c -emit-llvm /tmp/expensive_loop.c -o
/tmp/expensive_loop.ll

$ perf record -o perf.data -g -k 1 ./bin/lli -jit-kind=mcjit /tmp/expensive_loop.ll 1

$ perf inject --jit -i perf.data -o perf.jit.data

$ perf report -i perf.jit.data
-   92.59%  lli      jitted-5881-2.so                   [.] stupid_isprime
     stupid_isprime
     main
     llvm::MCJIT::runFunction
     llvm::ExecutionEngine::runFunctionAsMain
     main
     __libc_start_main
     0x4bf6258d4c544155
+    0.85%  lli      ld-2.27.so                         [.] do_lookup_x

And line-level annotations also work:
       │              for(uint64_t i = 3; i < num / 2; i+= 2) {
       │1 30:   movq   $0x3,-0x18(%rbp)
  0.03 │1 38:   mov    -0x18(%rbp),%rax
  0.03 │        mov    -0x10(%rbp),%rcx
       │        shr    $0x1,%rcx
  3.63 │     ┌──cmp    %rcx,%rax
       │     ├──jae    6f
       │     │                if (num % i == 0)
  0.03 │     │  mov    -0x10(%rbp),%rax
       │     │  xor    %edx,%edx
 89.00 │     │  divq   -0x18(%rbp)
       │     │  cmp    $0x0,%rdx
  0.22 │     │↓ jne    5f
       │     │                        return false;
       │     │  movb   $0x0,-0x1(%rbp)
       │     │↓ jmp    73
       │     │        }
  3.22 │1 5f:│↓ jmp    61
       │     │        for(uint64_t i = 3; i < num / 2; i+= 2) {

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D44892

llvm-svn: 337789
2018-07-24 00:54:06 +00:00
Nico Weber 8c77bf9ec6 Remove LLVM_INSTALL_CCTOOLS_SYMLINKS
It used to symlink dsymutil to llvm-dsymutil, but after r327790 llvm's dsymutil
binary is now called dsymutil without prefix.

r327792 then reversed the direction of the symlink if
LLVM_INSTALL_CCTOOLS_SYMLINKS was set, but that looks like a buildfix and not
like something anyone should need.

https://reviews.llvm.org/D45966

llvm-svn: 330727
2018-04-24 15:41:02 +00:00
Clement Courbet 23db1744f1 [llvm-exegesis] Add a flag to disable libpfm even if present.
Summary: Fixes PR37053.

Reviewers: uabelho, gchatelet

Subscribers: mgorny, tschuett, llvm-commits

Differential Revision: https://reviews.llvm.org/D45436

llvm-svn: 329781
2018-04-11 07:32:43 +00:00
Jonas Devlieghere a6ef1abc09 [dsymutil] Rename llvm-dsymutil -> dsymutil
Now that almost all functionality of Apple's dsymutil has been
upstreamed, the open source variant can be used as a drop in
replacement. Hence we feel it's no longer necessary to have the llvm
prefix.

Differential revision: https://reviews.llvm.org/D44527

llvm-svn: 327790
2018-03-18 11:38:41 +00:00
Saleem Abdulrasool f0b4d40d75 build: add the ability to create a symlink for dsymutil
Add a `LLVM_INSTALL_CCTOOLS_SYMLINKS` to mirror
`LLVM_INSTALL_BINUTILS_SYMLINKS`.  For now, this allows us to create
symlinks for `dsymutil` to `llvm-dsymutil`.  This option is off by
default, but the user can enable it.

llvm-svn: 326381
2018-02-28 23:00:50 +00:00
Paul Robinson 052f14ef5a Fix up and document controlling ccache via CMake options.
Patch by Matthew Davis!

Differential Revision: https://reviews.llvm.org/D41757

llvm-svn: 323357
2018-01-24 18:15:08 +00:00