The current tests verify if the result of -infinity is a quiet NaN with
sign bit set. But, that need not be the case on all platforms. So, just
checking that the result is a quiet NaN and ignoring the sign bit is
good enough.
Conditionally adding subdirectories was missed in a few places previously.
This change adds the conditionals. A sub-directory was being added
needlessly in another place. That has been removed.
Summary:
If a test depends on a skipped entrypoint, then the test is also
skipped. This setup will be useful as we gradually add support for
more operating systems and target architectures.
Reviewers: asteinhauser
Differential Revision: https://reviews.llvm.org/D81489
Summary:
This is failing on the asan build because we use `-nostdlib`.
I also took this opportunity to make the target name match the naming structure we've been using.
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, ecnelises, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D81029
Summary:
This patch aims to add integration tests to check the following:
1) Header files are generated as expected.
2) Libc functions have the correct public name.
3) Libc functions have the correct return type and parameter types.
4) Symbols are exposed in the public lib.a files.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra
Subscribers: aheejin, ecnelises, dxf, mgorny, jfb, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D79192
Summary: This is split off from D79192 and exposes APIGenerator (renames to APIIndexer) for use in generating the integrations tests.
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: tschuett, ecnelises, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D80832
Building libc without clang fails with:
CMake Error at /home/asteinhauser/llvm-project/libc/CMakeLists.txt:49 (message):
'clang' and 'clang-tools-extra' are required in LLVM_ENABLE_PROJECTS to
lint llvm-libc. The linting step performs important checks to help prevent
the introduction of subtle bugs, but it may increase build times.
Reviewers: sivachandra
Reviewed By: sivachandra
Differential Revision: https://reviews.llvm.org/D80495
Summary: This is a NFC, it aims at simplifying both the code and build files.
Reviewers: abrachet, sivachandra
Subscribers: mgorny, tschuett, ecnelises, libc-commits, courbet
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D80291
Summary: When building llvm-libc with linting enabled, clang-tidy would use the resource dir of the monorepo rather then the host compiler's resource dir. This presented issues when including headers from the host compiler e.g. for sanitizers. Therefore this patch explicitly tells clang-tidy to use the host compiler's resource dir.
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, ecnelises, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D80265
Summary:
I found that because `--system-headers` flag was not included when running clang-tidy, errors produced from compiler provided headers were being suppressed. After passing this flag I realized that by including headers like stdint.h we were indirectly including headers from the system libc. To prevent this we pass `-ffreestanding`.
We don't want to pass `--system-headers` for all checks just the `llvmlibc-restrict-system-libc-headers` therefore we do a separate invocation of clang-tidy for this check.
Reviewers: abrachet, sivachandra
Reviewed By: sivachandra
Subscribers: mgorny, aheejin, tschuett, ecnelises, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D80178
A new utils library named 'fputil' is added. This library is used in
math tests and the MPFR wrapper. The math implementations will be
modified to use this library in a later round.
Reviewers: phosek
Differential Revision: https://reviews.llvm.org/D79724
Summary:
These warnings were present when building llvm-libc in release mode.
```
workspace/llvm-project/libc/utils/benchmarks/LibcMemoryBenchmarkTest.cpp:50:34: warning: 'None' is deprecated: Use Align() or Align(1) instead [-Wdeprecated-declarations]
Conf.AddressAlignment = Align::None();
workspace/llvm-project/libc/utils/testutils/FDReaderUnix.cpp:19:7: warning: unused variable 'err' [-Wunused-variable]
int err = ::pipe(pipefd);
```
For test-utils it seems in general we should use `report_fatal_error` instead of asserts as these are turned off when building in release mode.
https://llvm.org/docs/CodingStandards.html#assert-liberally
Reviewers: abrachet, sivachandra
Reviewed By: abrachet, sivachandra
Subscribers: tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D79469
A few documentation clarifications and moving one part of the
docs around to be closer to the first mention of display so that
it's easier to spot based on some user feedback.
Differential Revision: https://reviews.llvm.org/D79443
Summary:
Math results are compared with MPFR results by checking if they are
within a tolerance level of the MPFR result. The tolerance level is set
using additional bits of precision of the fractional part of a floating
point value. Hence, the actual value of the tolerance depends on not
only the additional bits, but also on the exponent part of the floating
point number.
Previously, the exponent part was not considered in evaluating the
tolerance value. While it was OK for small values less than 1 (hence
sinf, cosf, sincosf tests were OK), it breaks for large values which
functions like exp and friends produce. This change uses the exponent
value also to evaluate the tolerance value. LLVM libc produced results
can now be compared with MPFR produced results for large values also.
Reviewers: abrachet
Differential Revision: https://reviews.llvm.org/D79278
This dramtically reduces the run time of tests. For example,
sincosf_test takes over 25 minutes without this attribute but only 8
seconds with this attribute.
A new test matcher class MPFRMatcher is added along with helper macros
EXPECT|ASSERT_MPFR_MATCH.
New type traits classes RemoveCV and IsFloatingPointType have been
added and used to implement the above class and its helpers.
Reviewers: abrachet, phosek
Differential Revision: https://reviews.llvm.org/D79256
This change does not handle any extensions. Only the C standard
variations are handled.
Reviewers: abrachet
Differential Revision: https://reviews.llvm.org/D79150
Summary: Just to be consistent with other names in cpp.
Reviewers: abrachet
Subscribers: tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D79189
This will fix building the wrapper shared library when
BUILD_SHARED_LIBS is ON.
Reviewers: PaulkaToast
Differential Revision: https://reviews.llvm.org/D78737
Deps are recrusively evaluated at the place they are needed. With this
change, one does not have to list recursive deps of entrypoints when
listing test targets. One will still have to explicitly list all
entrypoint objects when setting up an "add_entrypoint_library" target.
Reviewers: abrachet
Differential Revision: https://reviews.llvm.org/D78537
Summary:
The single file was getting too long to be convenient to navigate. This
patch splits it up two into 4 files one each for header rules,
object rules, library rules, and test rules.
Reviewers: abrachet, alexshap
Subscribers: mgorny, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D78536
Summary: Adds `write` for Linux and FDReader utility which should be useful for some stdio tests as well.
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D78184
Summary: It also re formats long lines in `add_gen_header`
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D78349
Summary:
This patch implements running linting on llvm-libc using build rule targets.
1) adds a new target per entrypoint for linting with the naming convention `<qualified_target_name>.__lint__` e.g `libc.src.string.strlen.__lint__`.
2) makes the build target for each entrypoint depend on the linting targets so that they run along with compilation of each entrypoint.
3) adds a lint all target named `lint-libc`. `check-libc` now depends on this new target.
4) linting creates a lot of additional targets from clang and clang-tidy that need to be built so an opt out flag can be passed to cmake: `LLVM_LIBC_ENABLE_LINTING`.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra
Subscribers: abrachet, mgorny, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D77861
NFC intended in the implementaton. Only mechanical changes to fit the LLVM
libc implementation standard have been done.
Math testing infrastructure has been added. This infrastructure compares the
results produced by the libc with the high precision results from MPFR.
Tests making use of this infrastructure have been added for cosf, sinf and
sincosf.
Reviewers: abrachet, phosek
Differential Revision: https://reviews.llvm.org/D76825
Summary:
This patch adds a very basic `FILE` type and basic `fwrite`.
It also removes `snprintf` from `StdIO`'s function spec because `VarArgType` was causing the generation to fail.
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D77626
Summary: Create self contained functional header which has a type similar to `std::function`
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D77948
Only targets setup by the special LLVM libc rules now have fully
qualified names. The naming style is similar to fully qualified names in
Python.
Reviewers: abrachet, PaulkaToast, phosek
Differential Revision: https://reviews.llvm.org/D77340
Summary:
Made all header files consistent based of this documentation: https://llvm.org/docs/CodingStandards.html#file-headers.
And did the same for all source files top of file comments.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra, abrachet
Subscribers: MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D77533
Summary: This should fix the call to a non internal libc function.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra
Subscribers: xbolva00, mgorny, MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D77279
Summary: Add's `sigfillset` and `sigdelset` which will be used in D76676.
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D76936
The preprocessor reads the whole line even if the first condition of an and is false so this broke when compiling on older gcc versions which don't recognize `__has_builtin`
This adds a very simple loader. This will be extended to a full loader
in future patches. A utility rule to add unittests has been added to
serve us while we are building out the full loader.
Reviewers: abrachet, phosek
Differential Revision: https://reviews.llvm.org/D76412
Summary:
This patch adds a Linux implementation for `signal`
It also fixes `ASSERT|EXPECT_THAT` macros
Reviewers: sivachandra, PaulkaToast, MaskRay
Reviewed By: sivachandra
Subscribers: mgorny, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D76536
Summary:
The patch is not ready yet and is here to discuss a few options:
- How do we customize the implementation? (i.e. how to define `kRepMovsBSize`),
- How do we specify custom compilation flags? (We'd need `-fno-builtin-memcpy` to be passed in),
- How do we build? We may want to test in debug but build the libc with `-march=native` for instance,
- Clang has a brand new builtin `__builtin_memcpy_inline` which makes the implementation easy and efficient, but:
- If we compile with `gcc` or `msvc` we can't use it, resorting on less efficient code generation,
- With gcc we can use `__builtin_memcpy` but then we'd need a postprocess step to check that the final assembly do not contain call to `memcpy` (unlikely but allowed),
- For msvc we'd need to resort on the compiler optimization passes.
Reviewers: sivachandra, abrachet
Subscribers: mgorny, MaskRay, tschuett, libc-commits, courbet
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D74397
Summary: These dependencies are needed for testing on the buildbots until we migrate AORs into libc.
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D76330
Summary:
There seems to be a race condition between the pipe closing and the child process death. Likely these two events are not atomic on some versions of linux.
With the removal of `WNOHANG` we eliminate the race condition, however if the child closes the pipe intentionally then it could result in the test runner hanging. I find this situation less likely, where as I experience failures locally with this race condition rather consistently.
Reviewers: sivachandra, abrachet
Reviewed By: sivachandra, abrachet
Subscribers: MaskRay, jfb, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D76267
This rule can help add targets to generate special object files like the
crt1.o on linux. Also, it can be used to add specially compiled object
stubs which are to be linked into the entrypoint objects.
Reviewers: abrachet
Differential Revision: https://reviews.llvm.org/D76271
This adds the Arm Optimized Routines (see
https://github.com/ARM-software/optimized-routines) source code under the
the LLVM license. The version of the code provided in this patch is v20.02
of the Arm Optimized Routines project.
This entire contribution is being committed as is even though it does
not currently fit the LLVM libc model and does not follow the LLVM
coding style. In the near future, implementations from this patch will be
moved over to their right place in the LLVM-libc tree. This will be done
over many small patches, all of which will go through the normal LLVM code
review process. See this libc-dev post for the plan:
http://lists.llvm.org/pipermail/libc-dev/2020-March/000044.html
Differential revision of the original upload: https://reviews.llvm.org/D75355
Summary:
This patch adds a timeout of 500ms to death tests. As we add multithreaded code and locks, deadlocks become more likely so timeout will be useful.
Additionally:
- Better error handling in `invokeSubprocess`
- Makes `ProcessStatus`'s methods const
Reviewers: sivachandra, MaskRay, gchatelet, PaulkaToast
Reviewed By: sivachandra, PaulkaToast
Subscribers: tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D75651
Summary: This patch adds a temporary `__assert_fail` and `assert` definition to make it available to internal llvm libc code. `__assert_fail` writes to fd 2 directly instead of `stderr`, using SYS_write. I have not put it in its own linux directory because this is temporary and it should be using stdio's api in the future. It does not currently print out the line number (although we could do that by stringifying `__LINE__` if reviewers wish).
Reviewers: sivachandra, gchatelet, PaulkaToast
Reviewed By: sivachandra
Subscribers: mgorny, MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D75420
Summary: Created a docker container to provide transparency and easy changes to the llvm-libc buildbot intfra.
Reviewers: sivachandra
Reviewed By: sivachandra
Subscribers: MaskRay, tschuett, libc-commits
Tags: #libc-project
Differential Revision: https://reviews.llvm.org/D75596
These functions only support locking and unlocking of plain mutexes.
They will be extended in future changes to handled recursive and timed
mutexes.
Reviewers: phosek
Differential Revision: https://reviews.llvm.org/D74653
The following are the differences from the first version:
1. The kernel does not copy the stack for the new thread (it cannot).
The previous version missed this fact. In this new version, the new
thread's start args are copied on to the new stack in a known location
so that the new thread can sniff them out.
2. A start args sniffer for x86_64 has been added.
2. Default stack size has been increased to 64KB.
Reviewers: abrachet, phosek
Differential Revision: https://reviews.llvm.org/D75818
Summary:
Use `EXPECT_THAT` where possible in tests NFC intended.
Added a `void *` template instantiation of `StreamWrapper::operator<<`
Reviewers: sivachandra, PaulkaToast
Reviewed By: sivachandra
Subscribers: MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D75717
Summary: This patch adds gtest-like matchers and `EXPECT|ASSERT_THAT` macros. It also adds matchers `Succeeds` and `Fails` and has examples using these in test/src/signal/sigaddset_test.cpp.
Reviewers: sivachandra, gchatelet, PaulkaToast
Reviewed By: sivachandra, PaulkaToast
Subscribers: mgorny, MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D75487
A target to generate the std C threads.h file has been added. This
utilizes the new feature added in this change.
Reviewers: phosek
Differential Revision: https://reviews.llvm.org/D75379
This argument can be used to specify the entrypoint name if it is different
from the target name.
Reviewers: gchatelet, abrachet
Differential Revision: https://reviews.llvm.org/D74948
Summary:
This is a quality of life change to make it a little nicer to look at, NFC.
This patch makes the RUN and OK lines green and FAILED lines red to match gtest's output.
Reviewers: sivachandra, gchatelet, PaulkaToast
Reviewed By: gchatelet
Subscribers: MaskRay, tschuett, libc-commits
Differential Revision: https://reviews.llvm.org/D75103
Siva Chandra Reddy