Commit Graph

360 Commits

Author SHA1 Message Date
Matt Morehouse 72671d6350 [CMake] Use PRIVATE when linking LLVM fuzzers.
More fuzzers missed by r319840.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319987 91177308-0d34-0410-b5e6-96231b3b80d8
2017-12-06 23:32:46 +00:00
Shoaib Meenai 4a6bb5316a [CMake] Use PRIVATE in target_link_libraries for executables
We currently use target_link_libraries without an explicit scope
specifier (INTERFACE, PRIVATE or PUBLIC) when linking executables.
Dependencies added in this way apply to both the target and its
dependencies, i.e. they become part of the executable's link interface
and are transitive.

Transitive dependencies generally don't make sense for executables,
since you wouldn't normally be linking against an executable. This also
causes issues for generating install export files when using
LLVM_DISTRIBUTION_COMPONENTS. For example, clang has a lot of LLVM
library dependencies, which are currently added as interface
dependencies. If clang is in the distribution components but the LLVM
libraries it depends on aren't (which is a perfectly legitimate use case
if the LLVM libraries are being built static and there are therefore no
run-time dependencies on them), CMake will complain about the LLVM
libraries not being in export set when attempting to generate the
install export file for clang. This is reasonable behavior on CMake's
part, and the right thing is for LLVM's build system to explicitly use
PRIVATE dependencies for executables.

Unfortunately, CMake doesn't allow you to mix and match the keyword and
non-keyword target_link_libraries signatures for a single target; i.e.,
if a single call to target_link_libraries for a particular target uses
one of the INTERFACE, PRIVATE, or PUBLIC keywords, all other calls must
also be updated to use those keywords. This means we must do this change
in a single shot. I also fully expect to have missed some instances; I
tested by enabling all the projects in the monorepo (except dragonegg),
and configuring both with and without shared libraries, on both Darwin
and Linux, but I'm planning to rely on the buildbots for other
configurations (since it should be pretty easy to fix those).

Even after this change, we still have a lot of target_link_libraries
calls that don't specify a scope keyword, mostly for shared libraries.
I'm thinking about addressing those in a follow-up, but that's a
separate change IMO.

Differential Revision: https://reviews.llvm.org/D40823



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319840 91177308-0d34-0410-b5e6-96231b3b80d8
2017-12-05 21:49:56 +00:00
Shoaib Meenai dbd3af20e6 [llvm] Add stripped installation targets
CMake's generated installation scripts support `CMAKE_INSTALL_DO_STRIP`
to enable stripping the installed binaries. LLVM's build system doesn't
expose this option to the `install-` targets, but it's useful in
conjunction with `install-distribution`.

Add a new function to create the install targets, which creates both the
regular install target and a second install target that strips during
installation. Change the creation of all installation targets to use
this new function. Stripping doesn't make a whole lot of sense for some
installation targets (e.g. the LLVM headers), but consistency doesn't
hurt.

I'll make other repositories (e.g. clang, compiler-rt) use this in a
follow-up, and then add an `install-distribution-stripped` target to
actually accomplish the end goal of creating a stripped distribution. I
don't want to do that step yet because the creation of that target would
depend on the presence of the `install-*-stripped` target for each
distribution component, and the distribution components from other
repositories will be missing that target right now.

Differential Revision: https://reviews.llvm.org/D40620

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@319480 91177308-0d34-0410-b5e6-96231b3b80d8
2017-11-30 21:48:26 +00:00
Michal Gorny 0b373e161f [CMake] Allow for Solaris ld -V output on stdout
In recent versions of Solaris 11.4 (previously 12), ld -V output went to
stdout instead of stderr. Since AddLLVM.cmake only expects it on stderr,
Solaris ld wasn't properly detected and options not understood by it are
passed during the build.

The following patch fixes this, allowing for both variants.

Tested on i386-pc-solaris2.11.4 (on top of D35755 which is needed for
proper Solaris support).

Patch by Rainer Orth.

Differential Revision: https://reviews.llvm.org/D39601

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318532 91177308-0d34-0410-b5e6-96231b3b80d8
2017-11-17 17:12:14 +00:00
Greg Bedwell bf3b5163ff Move the setting of LLVM_BUILD_MODE to a macro so that we can re-use it in compiler-rt
Differential Revision: https://reviews.llvm.org/D38470

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@318034 91177308-0d34-0410-b5e6-96231b3b80d8
2017-11-13 12:40:05 +00:00
Tim Shen 228b83b879 [CMake] Fix linker detection in AddLLVM.cmake
Fix linker not being correctly detected when a custom one is specified
through LLVM_USE_LINKER CMake variable.

In particular,

  cmake -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_LINKER=gold ../llvm

resulted into

  Linker detection: GNU ld

instead of

  Linker detection: GNU Gold

due to the construction not accounting for such variable. It led to the general
confusion and prevented setting linker-specific flags inside functions defined
in AddLLVM.cmake.

Thanks Oleksii Vilchanskyi for the patch!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316956 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-30 21:12:14 +00:00
Zachary Turner 67384e3ffa Force #define GTEST_LANG_CXX11.
gtest depends on this #define to determine whether it can
use various classes like std::tuple, or whether it has to fall
back to experimental classes in the std::tr1 namespace.  The
check in the current version of gtest relies on the value of
the `__cplusplus` macro, but MSVC provides a non-conformant
value of this macro, making it effectively impossible to detect
C++11.  In short, LLVM compiled with MSVC has been silently
using the tr1 versions of several classes since the beginning of
time.

This would normally be pretty benign, except that in the latest
preview of MSVC they have marked all of the tr1 classes
deprecated, so it spews thousands of warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316798 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-27 21:12:28 +00:00
Shoaib Meenai 7f40466d3b [cmake] Restrict resource file usage to Windows build hosts
Resource file compilation requires a working resource compiler.
Unfortunately, llvm-rc isn't quite there yet [1], and cmake's rc
invocation only works on Windows [2]. Until both those issues are
addressed, disable resource file usage on non-Windows build hosts, to
unblock Windows cross-compilation. This is also consistent with the
existing comment, which says "If *on Windows* and building with MSVC".

[1] http://lists.llvm.org/pipermail/llvm-dev/2017-October/118433.html
[2] https://public.kitware.com/pipermail/cmake/2017-October/066441.html

Differential Revision: https://reviews.llvm.org/D39265

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@316594 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-25 17:11:28 +00:00
Matt Morehouse 8520e4812b [cmake] Allow building fuzzers with OSS-Fuzz flags.
Reviewers: kcc, bogner

Reviewed By: bogner

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D38858

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@315629 91177308-0d34-0410-b5e6-96231b3b80d8
2017-10-12 21:58:41 +00:00
Brian Gesiak 35bfb7ddfe Revert "[CMake] Remove CMAKE_.*_OUTPUT_DIRECTORY (NFCI)"
Summary:
It appears polly makes use of the `CMAKE_RUNTIME_OUTPUT_DIRECTORY` variable
when configuring its lit test suite. Reverting this for now.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314551 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-29 19:50:41 +00:00
Brian Gesiak 7369201851 [CMake] Remove CMAKE_.*_OUTPUT_DIRECTORY (NFCI)
Summary:
Three `CMAKE_.*_OUTPUT_DIRECTORY` variables used to be set in CMake and
referenced in various other parts of the project. However, in r198205
chapuni added a note to "don't set them anymore", and any remaining
references to them were subsequently removed in r198316 and r199592.

Now that the variables are no longer used anywhere, remove them, along
with the comments advising against using them any longer.

Test Plan:
I ran `check-all` and confirmed the tests built and passed.

Reviewers: beanz, chapuni

Reviewed By: beanz

Subscribers: mgorny

Differential Revision: https://reviews.llvm.org/D38389

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@314550 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-29 19:34:57 +00:00
Zachary Turner 2462b0299b [lit] Add a test for the builtin config map.
Config map is not exposed through the command line, so testing this
is somewhat tricky.  But basically we need a test that if a custom
driver builds a config map and passes it to main, it gets respected.

A config map allows config files in the source tree to be mapped
to alternate config files in the build tree.  This particular test
works by having two config files in separate directories, and
setting up a config map to have that redirects A/lit.site.cfg
to B/altconfig.  Then, we print a message in A/lit.site.cfg
and B/altconfig and check that we do see the output from B
but don't see the output from A.  Additionally we test that
the test suite specified by A's config map is properly discovered.

Differential Revision: https://reviews.llvm.org/D38105

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313887 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-21 16:18:28 +00:00
Zachary Turner 1e4a125226 [lit] Make lit support config files with .py extension.
Many editors and Python-related diagnostics tools such as
debuggers break or fail in mysterious ways when python files
don't end in .py.  This is especially true on Windows, but
still exists on other platforms.  I don't want to be too heavy
handed in changing everything across the board, but I do want
to at least *allow* lit configs to have .py extensions.  This
patch makes the discovery process first look for a config file
with a .py extension, and if one is not found, then looks for
a config file using the old method.  So for existing users, there
should be no functional change.

Differential Revision: https://reviews.llvm.org/D37838

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313849 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-21 00:24:52 +00:00
Zachary Turner fd4d2852f0 Make libcxx tests work when llvm sources are not present.
Despite a strong CMake warning that this is an unsupported
libcxx build configuration, some bots still rely on being
able to check out lit and libcxx independently with no
LLVM sources, and then run lit against libcxx.

A previous patch broke that workflow, so this is making it work
again.  Unfortunately, it breaks generation of the llvm-lit
script for libcxx, but we will just have to live with that until
a solution is found that allows libcxx to make more use of
llvm build pieces.  libcxx can still run tests by using the
ninja check target, or by running lit.py directly against the
build tree or source tree.

Differential Revision: https://reviews.llvm.org/D38057

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313763 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-20 16:01:50 +00:00
Zachary Turner 058162edd3 Resubmit "Fix llvm-lit script generation in libcxx."
After speaking with the libcxx owners, they agreed that this is
a bug in the bot that needs to be fixed by the bot owners, and
the CMake changes are correct.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313643 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-19 17:19:10 +00:00
Zachary Turner bfc7639dd1 Revert "Fix llvm-lit script generation in libcxx."
This reverts commit 4ad71811d45268d81b60f27e3b8b2bcbc23bd7b9.

There is a bot that is checking out libcxx and lit with nothing
else and then running lit.py against the test tree.  Since there's
no LLVM source tree, there's no LLVM CMake.  CMake actually
reports this as a warning saying unsupported libcxx configuration,
but I guess someone is depending on it anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313607 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-19 03:11:35 +00:00
Zachary Turner a2144731b3 Fix llvm-lit script generation in libcxx.
Differential Revision: https://reviews.llvm.org/D37997

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313606 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-19 02:46:28 +00:00
Zachary Turner 5f445a03f7 [cmake] Add a simple function to dump all variables.
This is useful when debugging CMake problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313574 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-18 21:52:02 +00:00
Zachary Turner 4af1a22e52 Resubmit "Add a shared llvm.lit module that all test suites can use."
There were some issues surrounding Py2 / Py3 compatibility, but
I've now tested with both Py2 and Py3 and everything seems to
work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313467 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-16 18:46:21 +00:00
Zachary Turner 591b934d84 Revert lit changes related to lit.llvm module.
It looks like this is going to be non-trivial to get working
in both Py2 and Py3, so for now I'm reverting until I have time
to fully test it under Python 3.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313429 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-16 00:52:49 +00:00
Zachary Turner 6368f9154b Resubmit "[lit] Add a lit.llvm module that all llvm projects can use"
This was reverted alongside the revert of the lit/llvm-lit refactor,
but now that that has re-landed, I'm relanding this as well.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313426 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-16 00:25:58 +00:00
Zachary Turner a0f1ea32df Resubmit "[lit] Force site configs to run before source-tree configs"
This is a resubmission of r313270.  It broke standalone builds of
compiler-rt because we were not correctly generating the llvm-lit
script in the standalone build directory.

The fixes incorporated here attempt to find llvm/utils/llvm-lit
from the source tree returned by llvm-config.  If present, it
will generate llvm-lit into the output directory.  Regardless,
the user can specify -DLLVM_EXTERNAL_LIT to point to a specific
lit.py on their file system.  This supports the use case of
someone installing lit via a package manager.  If it cannot find
a source tree, and -DLLVM_EXTERNAL_LIT is either unspecified or
invalid, then we print a warning that tests will not be able
to run.

Differential Revision: https://reviews.llvm.org/D37756

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313407 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-15 22:10:46 +00:00
Zachary Turner b411a75bae Revert "[lit] Force site configs to run before source-tree configs"
This patch is still breaking several multi-stage compiler-rt bots.
I already know what the fix is, but I want to get the bots green
for now and then try re-applying in the morning.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313335 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-15 02:56:40 +00:00
Reid Kleckner f9c1d433fb [cmake] Fix a variable shadowing bug
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313331 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-15 01:18:46 +00:00
Zachary Turner 3cdfdbb5e8 [lit] Revert "Add a lit.llvm module that all llvm projects can use"
This is breaking due to some changes I forgot to merge in, so I'm
temporarily reverting them until I can re-test that this works.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313328 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-15 00:56:08 +00:00
Zachary Turner d5831d289e [lit] Add a lit.llvm module that all test suites can use.
To further reduce duplicate code, this patch introduces a module
that configs can simply import and get access to a lot of useful
functionality such as setting up paths, adding features that are
useful across all projects, and other utility-type functions.

For now this only updates llvm's suite to use this new library,
but subsequent patches will update other projects.

Differential Revision: https://reviews.llvm.org/D37778

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313325 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-15 00:34:00 +00:00
Zachary Turner 837d04db84 [lit] Force site configs to be run before source-tree configs
This patch simplifies LLVM's lit infrastructure by enforcing an ordering
that a site config is always run before a source-tree config.

A significant amount of the complexity from lit config files arises from
the fact that inside of a source-tree config file, we don't yet know if
the site config has been run.  However it is *always* required to run
a site config first, because it passes various variables down through
CMake that the main config depends on.  As a result, every config
file has to do a bunch of magic to try to reverse-engineer the location
of the site config file if they detect (heuristically) that the site
config file has not yet been run.

This patch solves the problem by emitting a mapping from source tree
config file to binary tree site config file in llvm-lit.py. Then, during
discovery when we find a config file, we check to see if we have a
target mapping for it, and if so we use that instead.

This mechanism is generic enough that it does not affect external users
of lit. They will just not have a config mapping defined, and everything
will work as normal.

On the other hand, for us it allows us to make many simplifications:

* We are guaranteed that a site config will be executed first
* Inside of a main config, we no longer have to assume that attributes
  might not be present and use getattr everywhere.
* We no longer have to pass parameters such as --param llvm_site_config=<path>
  on the command line.
* It is future-proof, meaning you don't have to edit llvm-lit.in to add
  support for new projects.
* All of the duplicated logic of trying various fallback mechanisms of
  finding a site config from the main config are now gone.

One potentially noteworthy thing that was required to implement this
change is that whereas the ninja check targets previously used the first
method to spawn lit, they now use the second. In particular, you can no
longer run lit.py against the source tree while specifying the various
`foo_site_config=<path>` parameters.  Instead, you need to run
llvm-lit.py.

Differential Revision: https://reviews.llvm.org/D37756

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313270 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-14 16:47:58 +00:00
Zachary Turner a768fcb264 Revert "Determine up front which projects are enabled."
This was intended to be a generic CMake solution to a problem
shared across several projects.  It turns out it doesn't interact
very well certain CMake configurations, and furthermore the
"problem" is actually not a problem, as the problematic code
is never executed to begin with.  So this really isn't solving
anything.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313191 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-13 20:49:25 +00:00
Zachary Turner f733fd2a32 Determine up front which projects are enabled.
Some projects need to add conditional dependencies on other projects.
compiler-rt is already doing this, and I attempted to add this to
debuginfo-tests when I ran into the ordering problem, that you can't
conditionally add a dependency unless that dependency's CMakeLists.txt
has already been run (which would allow you to say if (TARGET foo).

The solution to this seems to be to determine very early on the entire
set of projects which is enabled. This is complicated by the fact that
there are multiple ways to enable projects, and different tree layouts
(e.g. mono-repo, out of -tree, external, etc). This patch attempts to
centralize all of this into one place, and then updates compiler-rt to
demonstrate as a proof of concept how this can simplify code.

Differential Revision: https://reviews.llvm.org/D37637

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@313091 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-12 23:32:34 +00:00
Justin Bogner 16edf9bff8 Move some CLI utils out of llvm-isel-fuzzer and into the library
FuzzMutate might not be the best place for these, but it makes more
sense than an entirely new library for now. This will make setting up
fuzz targets with consistent CLI handling easier.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312425 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-02 23:43:04 +00:00
Don Hinton b74923ccea [CMAKE] Move version control macros to AddLLVM.cmake so they can be reused by clang, etc.
Summary:
Move version control macros, find_first_existing_file and
find_first_existing_vc_file to AddLLVM.cmake so they can be reused by sub projects
like clang.

Differential Revision: https://reviews.llvm.org/D36971

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312419 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-02 17:28:39 +00:00
Justin Bogner 8cb6b3ebf8 llvm-isel-fuzzer: Make buildable and testable without libFuzzer
This adds a dummy main so we can build and run the llvm-isel-fuzzer
functionality when we aren't building LLVM with coverage. The approach
here should serve as a template to stop in-tree fuzzers from
bitrotting (See llvm.org/pr34314).

Note that I'll probably move most of the logic in DummyISelFuzzer's
`main` to a library so it's easy to reuse it in other fuzz targets,
but I'm planning on doing that in a follow up that also consolidates
argument handling in our LLVMFuzzerInitialize implementations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312338 91177308-0d34-0410-b5e6-96231b3b80d8
2017-09-01 17:02:22 +00:00
Justin Bogner 33a778823b cmake: Invent add_llvm_fuzzer to set up fuzzer targets
This moves the cmake configuration for fuzzers in LLVM to a new macro,
add_llvm_fuzzer. This will make it easier to keep things consistent
while implementing llvm.org/pr34314.

I've also made a couple of minor functional changes here:

- the fuzzers now use add_llvm_executable rather than add_llvm_tool.
  This means they won't create install targets and stuff like that,
  because those made little sense for these fuzzers.
- I've grouped these under "Fuzzers" rather than in with "Tools" for
  people who build with IDEs.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@312200 91177308-0d34-0410-b5e6-96231b3b80d8
2017-08-31 00:36:33 +00:00
Rui Ueyama 86784318a6 [Solaris] Detect Solaris LD, use detection results to pass Solaris-ld options
Solaris ld is not the only linker available on Solaris.
Introducing linker detection and using LLVM_LINKER_IS_SOLARISLD to
select Solaris-ld specific handling.

Patch by: Fedor Sergeev

Differential Revision: https://reviews.llvm.org/D35325

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307852 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-12 21:43:14 +00:00
George Karpenkov f3550754a5 [cmake] Remove obsolete unset in CMake.
Differential Revision: https://reviews.llvm.org/D35024

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307569 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-10 18:58:05 +00:00
Tom Stellard 1f536a1112 CMake: Add LLVM_UTILS_INSTALL_DIR option
Summary:
This is like the LLVM_TOOLS_INSTALL_DIR option, but for the utils
that are installed when the LLVM_INSTALL_UTILS.  This option
defaults to 'bin' to remain consistent with the current behavior, but
distros may want to install these to libexec/llvm.

Reviewers: beanz

Reviewed By: beanz

Subscribers: llvm-commits, mgorny

Differential Revision: https://reviews.llvm.org/D30655

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@307150 91177308-0d34-0410-b5e6-96231b3b80d8
2017-07-05 12:57:30 +00:00
NAKAMURA Takumi b903fddc56 [CMake] Introduce LLVM_TARGET_TRIPLE_ENV as an option to override LLVM_DEFAULT_TARGET_TRIPLE at runtime.
No behavior is changed if LLVM_TARGET_TRIPLE_ENV is blank or undefined.

If LLVM_TARGET_TRIPLE_ENV is "TEST_TARGET_TRIPLE" and $TEST_TARGET_TRIPLE is not blank,
llvm::sys::getDefaultTargetTriple() returns $TEST_TARGET_TRIPLE.
Lit resets config.target_triple and config.environment[LLVM_TARGET_TRIPLE_ENV] to change the default target.

Without changing LLVM_DEFAULT_TARGET_TRIPLE nor rebuilding, lit can be run;

  TEST_TARGET_TRIPLE=i686-pc-win32 bin/llvm-lit -sv path/to/test/
  TEST_TARGET_TRIPLE=i686-pc-win32 ninja check-clang-tools

Differential Revision: https://reviews.llvm.org/D33662

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305632 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-17 03:19:08 +00:00
Sylvestre Ledru cd789d8cfe Add a linker script to version LLVM symbols
Summary:
This patch adds a very simple linker script to version the lib's symbols
and thus trying to avoid crashes if an application loads two different
LLVM versions (as long as they do not share data between them).

Note that we deliberately *don't* make LLVM_5.0 depend on LLVM_4.0:
they're incompatible and the whole point of this patch is
to tell the linker that.


Avoid unexpected crashes when two LLVM versions are used in the same process.

Author: Rebecca N. Palmer <rebecca_palmer@zoho.com>
Author: Lisandro Damían Nicanor Pérez Meyer <lisandro@debian.org>
Author: Sylvestre Ledru <sylvestre@debian.org>
Bug-Debian:  https://bugs.debian.org/848368


Reviewers: beanz, rnk

Reviewed By: rnk

Subscribers: mgorny, llvm-commits

Differential Revision: https://reviews.llvm.org/D31524

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300496 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-17 20:51:50 +00:00
Ayman Musa 4c76a12393 Reverting cmake/modules/AddLLVM.cmake changes from revision 300184 (Added by mistake).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300185 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-13 09:26:49 +00:00
Ayman Musa 456f727677 [X86] Change instructions names to keep consistency with the naming convention. NFC
Differential Revision: https://reviews.llvm.org/D31743



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@300184 91177308-0d34-0410-b5e6-96231b3b80d8
2017-04-13 09:12:32 +00:00
Ayman Musa 69112bd6d2 [X86] Quick fix for build bot failure (r297127) due to unused variable.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297130 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-07 08:56:27 +00:00
Ayman Musa b59d8041db [X86][AVX512] Adding new LLVM TableGen backend which generates the EVEX2VEX compressing tables.
X86EvexToVex machine instruction pass compresses EVEX encoded instructions by replacing them with their identical VEX encoded instructions when possible.
It uses manually supported 2 large tables that map the EVEX instructions to their VEX ideticals.
This TableGen backend replaces the tables by automatically generating them.

Differential Revision: https://reviews.llvm.org/D30451



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@297127 91177308-0d34-0410-b5e6-96231b3b80d8
2017-03-07 08:11:19 +00:00
Petr Hosek 8cea2afdc7 [CMake] Support externalizing debug info on non-Darwin platforms
On other platorms, we use objcopy to export the debug info.

Differential Revision: https://reviews.llvm.org/D28575

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@295481 91177308-0d34-0410-b5e6-96231b3b80d8
2017-02-17 19:29:12 +00:00
Eric Fiselier a61fc423f3 [CMake] Fix pthread handling for out-of-tree builds
LLVM defines `PTHREAD_LIB` which is used by AddLLVM.cmake and various projects
to correctly link the threading library when needed. Unfortunately
`PTHREAD_LIB` is defined by LLVM's `config-ix.cmake` file which isn't installed
and therefore can't be used when configuring out-of-tree builds. This causes
such builds to fail since `pthread` isn't being correctly linked.

This patch attempts to fix that problem by renaming and exporting
`LLVM_PTHREAD_LIB` as part of`LLVMConfig.cmake`. I renamed `PTHREAD_LIB`
because It seemed likely to cause collisions with downstream users of
`LLVMConfig.cmake`.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294690 91177308-0d34-0410-b5e6-96231b3b80d8
2017-02-10 01:59:20 +00:00
Michal Gorny e3aa75949b [cmake] Update SOVERSION for the new versioning scheme
Update SOVERSION to use just the major version number rather than
major+minor, to match the new versioning scheme where only major is used
to indicate API/ABI version.

Since two-digit SOVERSIONs were introduced post 3.9 branching, this
change does not risk any SOVERSION collisions. In the past,
two-component X.Y SOVERSIONs were shortly used but those will not
interfere with the new ones since the new versions start at 4.

Differential Revision: https://reviews.llvm.org/D28730

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@292255 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-17 21:04:19 +00:00
Chandler Carruth 054b6040e5 Add the 'googlemock' component of Google Test to LLVM's unittest libraries.
I have two immediate motivations for adding this:
1) It makes writing expectations in tests *dramatically* easier. A
   quick example that is a taste of what is possible:

     std::vector<int> v = ...;
     EXPECT_THAT(v, UnorderedElementsAre(1, 2, 3));

   This checks that v contains '1', '2', and '3' in some order. There
   are a wealth of other helpful matchers like this. They tend to be
   highly generic and STL-friendly so they will in almost all cases work
   out of the box even on custom LLVM data structures.

   I actually find the matcher syntax substantially easier to read even
   for simple assertions:

     EXPECT_THAT(a, Eq(b));
     EXPECT_THAT(b, Ne(c));

   Both of these make it clear what is being *tested* and what is being
   *expected*. With `EXPECT_EQ` this is implicit (the LHS is expected,
   the RHS is tested) and often confusing. With `EXPECT_NE` it is just
   not clear. Even the failure error messages are superior with the
   matcher based expectations.

2) When testing any kind of generic code, you are continually defining
   dummy types with interfaces and then trying to check that the
   interfaces are manipulated in a particular way. This is actually what
   mocks are *good* for -- testing *interface interactions*. With
   generic code, there is often no "fake" or other object that can be
   used.

   For a concrete example of where this is currently causing significant
   pain, look at the pass manager unittests which are riddled with
   counters incremented when methods are called. All of these could be
   replaced with mocks. The result would be more effective at testing
   the code by having tighter constraints. It would be substantially
   more readable and maintainable when updating the code. And the error
   messages on failure would have substantially more information as
   mocks automatically record stack traces and other information *when
   the API is misused* instead of trying to diagnose it after the fact.

I expect that #1 will be the overwhelming majority of the uses of gmock,
but I think that is sufficient to justify having it. I would actually
like to update the coding standards to encourage the use of matchers
rather than any other form of `EXPECT_...` macros as they are IMO
a strict superset in terms of functionality and readability.

I think that #2 is relatively rarely useful, but there *are* cases where
it is useful. Historically, I think misuse of actual mocking as
described in #2 has led to resistance towards this framework. I am
actually sympathetic to this -- mocking can easily be overused. However
I think this is not a significant concern in LLVM. First and foremost,
LLVM has very careful and rare exposure of abstract interfaces or
dependency injection, which are the most prone to abuse with mocks. So
there are few opportunities to abuse them. Second, a large fraction of
LLVM's unittests are testing *generic code* where mocks actually make
tremendous sense. And gmock is well suited to building interfaces that
exercise generic libraries. Finally, I still think we should be willing
to have testing utilities in tree even if they should be used rarely. We
can use code review to help guide the usage here.

For a longer and more complete discussion of this, see the llvm-dev
thread here:
http://lists.llvm.org/pipermail/llvm-dev/2017-January/108672.html

The general consensus seems that this is a reasonable direction to start
down, but that doesn't mean we should race ahead and use this
everywhere. I have one test that is blocked on this to land and that was
specifically used as an example. Before widespread adoption, I'm going
to work up some (brief) guidelines as some of these facilities should be
used sparingly and carefully.

Differential Revision: https://reviews.llvm.org/D28156

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291606 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-10 22:32:26 +00:00
Chandler Carruth 2ff6bc0d1d [gtest] Detect warning flags using the positive spelling.
Some GCC versions will accept any warning flag name after a '-Wno-',
which would cause us to try to disable warnings with names GCC didn't
understand. This will silently succeed unless there is some other output
from GCC in which case we get weird cc1plus warnings about the warning
name being bogus.

There is still the issue that gtest sets warning flags for building
gtest-all.cc using weird 'add_definitions' and the fact that there is
a GCC version which warns on the variadic macro usage in gtest under
-pedantic, but has no flag analogous to Clang's
-Wgnu-zero-variadic-macro-argumnets to suppress this warning. I haven't
been able to come up with any good solution here. The closest is to turn
off -pedantic for those versions of GCC, but that seems really nasty.
For now, those versinos of GCC aren't warning clean. If anyone is broken
by this, I'll work on CMake logic to detect and disable -pedantic in
these cases.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291299 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-06 23:16:00 +00:00
Michal Gorny 1159e42199 [cmake] Canonicalize CMake booleans to 0/1 for lit interop
Canonicalize all CMake booleans to 0/1 before passing them to lit, to
ensure that the Python side handles all of them consistently
and correctly. 0/1 is a safe choice of values that trigger the same
boolean interpretation in CMake, Python and C++.

Furthermore, using them without quotes improves the chance Python will
explicitly fail when an incorrect value (such as ON/OFF, TRUE/FALSE,
YES/NO) is accidentally passed, rather than silently misinterpreting
the value.

This replaces a lot of different logics spread around lit site files,
attempting to partially reproduce the boolean logic used in CMake
and usually silently failing when an uncommon value was used instead.
In fact, some of them were never working correctly since different
values were assigned in CMake and checked in Python.

The alternative solution could be to create a common parser for CMake
booleans in lit and use it consistently throughout the site files.
However, it does not seem like the best idea to create redundant
implementation of the same logic and have to follow upstream if it ever
is extended to handle more values.

Differential Revision: https://reviews.llvm.org/D28294

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291284 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-06 21:33:48 +00:00
Chandler Carruth b532062f02 [gtest] Fix the way we disable a warning for unittests.
I somehow wrote this fix and then lost it prior to commit. Really sorry
about the noise. This should fix some issues with hacking add_definition
to do things with warning flags.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@291033 91177308-0d34-0410-b5e6-96231b3b80d8
2017-01-04 23:40:06 +00:00
Chris Bieneman 69a678c244 [CMake] Minor change to symlink generation for LLDB
If OUTPUT_DIR is not specified we can assume the symlink is linking to a file in the same directory, so we can use $<TARGET_FILE_NAME:${target}> to create a relative symlink.

In the case of LLDB, when we build a framework, we are creating symlinks in a different directory than the file we're pointing to, and we don't install those links. To make this work in the build directory we can use $<TARGET_FILE:${target}> instead, which uses the full path to the target.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@289840 91177308-0d34-0410-b5e6-96231b3b80d8
2016-12-15 18:17:07 +00:00