Summary:
This patch fixes a number of problems with the visibility macros across GCC (on Unix) and Windows (DLL import/export semantics). All of the visibility macros are now documented under `DesignDocs/VisibilityMacros.rst`. Now I'll no longer forget the subtleties of each!
This patch adds two new visibility macros:
* `_LIBCPP_ENUM_VIS` for controlling the typeinfo of enum types. Only Clang supports this.
* `_LIBCPP_EXTERN_TEMPLATE_TYPE_VIS` for redefining visibility on explicit instantiation declarations. Clang and Windows require this.
After applying this patch GCC only emits one -Wattribute warning opposed to 30+.
Reviewers: mclow.lists, EricWF
Subscribers: beanz, mgorny, cfe-commits
Differential Revision: https://reviews.llvm.org/D24602
llvm-svn: 281673
r278501 inadvertently introduced a bug in which it disallowed shifting
scalar operands by vector operands when not compiling for OpenCL. This
commit fixes it.
Patch by Vladimir Yakovlev.
Differential Revision: https://reviews.llvm.org/D24467
llvm-svn: 281669
Currently, the Clang version is computed as follows:
1. LLVM defines major, minor, and patch versions, all statically set. Today,
these are 4, 0, and 0, respectively.
2. The static version numbers are combined into PACKAGE_VERSION along with a
suffix, so the result today looks like "4.0.0svn".
3. Clang extracts CLANG_VERSION from PACKAGE_VERSION using a regexp. The regexp
allows the patch level to omitted, and drops any non-digit trailing values.
Today, this result looks like "4.0.0".
4. CLANG_VERSION is then split further into CLANG_VERSION_MAJOR and
CLANG_VERSION_MINOR. Today, these resolve to 4 and 0, respectively.
5. If CLANG_VERSION matches a regexp with three version components, then
CLANG_VERSION_PATCHLEVEL is extracted and the CLANG_HAS_VERSION_PATCHLEVEL
variable is set to 1. Today, these values are 0 and 1, respectively.
6. The CLANG_VERSION_* variables (and CLANG_HAS_VERSION_PATCHLEVEL) are
configured into [llvm/tools/clang/]include/clang/Basic/Version.inc
verbatim by CMake.
7. In [llvm/tools/clang/]include/clang/Basic/Version.h, macros are defined
conditionally, based on CLANG_HAS_VERSION_PATCHLEVEL, to compute
CLANG_VERSION_STRING as either a two- or three-level version number. Today,
this value is "4.0.0", because despite the patchlevel being 0, it was
matched by regexp and is thus "HAS"ed by the preprocessor. This string is
then used wherever Clang's "version" is needed [*].
[*] Including, notably, by compiler-rt, for computing its installation path.
This change collapses steps 2-5 by defaulting Clang to use LLVM's (non-string)
version components for the Clang version (see [*] for why not PACKAGE_VERSION),
and collapses steps 6 and 7 by simply writing CLANG_VERSION_STRING into
Version.inc. The Clang version today always uses the patchlevel form, so the
collapsed Version.inc does not have logic for a version without a patch level.
Historically speaking, this technique began with the VER file in r82085 (which
survives in the form of the regexp in #3). The major, minor, and patchlevel
versions were introduced by r106863 (which remains in #4-6). The VER file itself
was deleted in favor of the LLVM version number in r106914. On the LLVM side,
the individual LLVM_VERSION_MAJOR, LLVM_VERSION_MINOR, and PACKAGE_VERSION
weren't introduced for nearly two more years, until r150405.
llvm-svn: 281666
For small, discontiguous local variable regions, CodeView can use a
single defrange record with a gap, rather than having two defrange
records. I expect that this optimization will only have a minor impact
on debug info size.
llvm-svn: 281664
These 2 helper functions were already using APInt internally, so just
change the API and caller to allow folds for splats. The scalar
regression tests look quite thorough, so I just added a couple of
tests to prove that vectors are handled too.
These folds should be grouped with the other cmp+shift folds though.
That can be an NFC follow-up.
llvm-svn: 281663
The definitions in sanitizer_common may conflict with definitions from system headers because:
The runtime includes the system headers after the project headers (as per LLVM coding guidelines).
lib/sanitizer_common/sanitizer_internal_defs.h pollutes the namespace of everything defined after it, which is all/most of the sanitizer .h and .cc files and the included system headers with: using namespace __sanitizer; // NOLINT
This patch solves the problem by introducing the namespace only within the sanitizer namespaces as proposed by Dmitry.
Differential Revision: https://reviews.llvm.org/D21947
llvm-svn: 281657
Summary:
It turns out CMake errors out if a processed directory contains source
files that are not used. This was causing an error with the CUDATest.cpp
file when configuring StreamExecutor with the CUDA platform disabled.
Moving CUDATest.cpp to its own directory fixes this problem.
Reviewers: jlebar, jprice
Subscribers: beanz, mgorny, jlebar, parallel_libs-commits
Differential Revision: https://reviews.llvm.org/D24618
llvm-svn: 281654
GlobalOpt is already dead-code-eliminating global definitions. With
this change it also takes care of declarations.
Hopefully this should make it now a strict superset of GlobalDCE.
This is important for LTO/ThinLTO as we don't want the linker to see
"undefined reference" when it processes the input files: it could
prevent proper internalization (or even load an extra file from a
static archive, changing the behavior of the program!).
llvm-svn: 281653
Summary:
This patch supplies basic infrastructure for LLDB to use LIT, and ports a few basic test cases from the LLDB test suite into LIT.
With this patch the LLDB lit system is not capable or intended to fully replace the existing LLDB test suite, but this first patch enables people to write lit tests for LLDB.
The lit substitution for %cc and %cxx default to the host compiler unless the CMake option LLDB_TEST_CLANG is On, in which case the in-tree clang will be used.
The target check-lldb-lit will run all lit tests including the lit-based executor for the unit tests. Alternatively there is a target generated for each subdirectory under the lit directory, so check-lldb-unit and check-lldb-expr will run just the tests under their respective directories.
The ported tests are not removed from the existing suite, and should not be until such a time when the lit runner is mature and in use by bots and workflows.
Reviewers: zturner, labath, jingham, tfiala
Subscribers: beanz, mgorny, lldb-commits
Differential Revision: https://reviews.llvm.org/D24591
llvm-svn: 281651
Currently, the machine combiner can proceed matching when -ffast-math is on.
It should also match when only -ffp-contract=fast is specified as was the
case before when DAGCombiner was doing the job.
Patch by: Abderrazek Zaafrani <a.zaafrani@samsung.com>.
Differential Revision: https://reviews.llvm.org/D24366
llvm-svn: 281649
This is PR30386,
SORT_BY_INIT_PRIORITY is a keyword can be used to sort sections by numerical value of the
GCC init_priority attribute encoded in the section name.
Differential revision: https://reviews.llvm.org/D24611
llvm-svn: 281646
This makes the code easier to grok, and since this is a very low
level function it also is very helpful to have this take a StringRef
since it means anyone higher up the chain who has a StringRef would
have to first convert it to a null-terminated string. This way it
can work equally well with StringRefs or const char*'s, which will
enable the conversion of higher up functions to StringRef.
Tested on Windows, Linux, and OSX and saw no regressions.
llvm-svn: 281642
When `_LIBCPP_NO_EXCEPTIONS` is defined, we end up with compile errors
when targeting MSVCRT:
* Code includes `<new>`
* `<new>` includes `<cstdlib>` in order to get `abort`
* `<cstdlib>` includes `<stdlib.h>`, _before_ the `using ::abort`
* `<stdlib.h>` includes `locale_win32.h`
* `locale_win32.h` includes `<memory>`
* `<memory>` includes `<stdexcept>`
* `<stdexcept>` includes `<cstdlib` for `abort`, but that inclusion gets
(correctly) ignored because of header guards
* `<stdexcept>` references `_VSTD::abort`, which isn't declared
The easiest solution is to make `locale_win32.h` not include `<memory>`,
by removing the use of `unique_ptr` and manually restoring the locale
instead.
Differential Revision: https://reviews.llvm.org/D24374
llvm-svn: 281641
This Xcode build variable defaults to x86_64. It can be set to i386
to cause the lldb-python-test-suite target run the tests in the
specified architecture.
This flag is being added for the zorg build script so that Green Dragon
can run the test suite against both x86_64 and i386 macOS targets.
llvm-svn: 281639
The IPI stream is structurally identical to the TPI stream, but it
contains different record types. So we just re-use the TPI writing
code.
llvm-svn: 281638
We were inadvertently adding the size of the hash value stream to
the size of the TPI stream, even though the hash value stream is
an entirely separate stream.
llvm-svn: 281636
Summary:
Add proper handling for shared memory arguments in the CUDA platform. Also add
in unit tests for CUDA.
Reviewers: jlebar
Subscribers: beanz, mgorny, jprice, jlebar, parallel_libs-commits
Differential Revision: https://reviews.llvm.org/D24596
llvm-svn: 281635
The underlying type for an enumeration in C is either char, signed int, or unsigned int. In the case the underlying type is chosen to be char (such as when passing -fshort-enums or using __attribute__((packed)) on the enum declaration), the enumeration can result in undefined behavior. However, when the underlying type is signed int or unsigned int (or long long as an extension), there is no undefined behavior because the types are compatible. This patch silences diagnostics for the latter while retaining the diagnostics for the former.
This patch addresses PR29140.
llvm-svn: 281632
This pattern is matched in foldICmpBinOpEqualityWithConstant() and already works
with vectors too. I changed some comments over there to point out the current
location. The tests for this transform are currently in 'sub.ll'.
Note that the remaining folds in this block all require a sub too, so they should
get grouped with the other icmp(sub) patterns.
llvm-svn: 281627
Kostya Serebryany