After b18cb9c4, clang would sometimes prefer the host C++ includes
(e.g. in /usr/include/c++/v1) before those specified via --sysroot.
While this behavior may be desirable on Linux, it is not so on FreeBSD,
where we make extensive use of --sysroot during the build of the base
system.  In that case, clang must *not* search outside the sysroot,
except for its own internal headers.

Add an override addLibCxxIncludePaths() to restore the old behavior,
which is to simply append /usr/include/c++/v1 to the specified sysroot.
While here, apply clang-format to the FreeBSD specific toolchain files.

Fixes PR44923.

[NFC] Move ValidTextRanges out of DwarfTransformer and into GsymCreator and unify address is not in GSYM errors so all strings match.

libc++ is careful to not fracture overload sets. When one overload
is visible to a user, all of them should be. Anything less causes
subtle bugs and ODR violations.

Previously, in order to support ::abs and ::div being supplied by
both <cmath> and <cstdlib> we had to do awful things that make
<math.h> and <stdlib.h> have header cycles and be non-modular.
This really breaks with modules.

Specifically the problem was that in C++ ::abs introduces overloads
for floating point numbers, these overloads forward to ::fabs,
which are defined in math.h. Therefore ::abs needed to be in math.h
too. But this required stdlib.h to include math.h and math.h to
include stdlib.h.

To avoid these problems the definitions have been moved to stddef.h
(which math includes), and the floating point overloads of ::abs
have been changed to call __builtin_fabs, which both Clang and GCC
support.

graph.

Split off shuffle combine tests that use AVX512F intrinsics, so we can test it with/without AVX512BW support.

Currently we always return true, when markConstantRange is used on an
object already containing a constant range. If NewR is equal to the
existing constant range however, nothing changes and we should return
false.

I also went ahead and added a clarifying comment and improved the
assertion.

Reviewers: efriedma, davide, nikic

Reviewed By: efriedma

Differential Revision: https://reviews.llvm.org/D73240

Refactors matchShuffleAsBitRotate to allow use by both lowerShuffleAsBitRotate and matchUnaryPermuteShuffle.

This patch prepares ValueLatticeElement to be used by SCCP, by:
* making the mark* functions public
* make the mark* functions return a bool indicating if the value has changed.

Reviewers: efriedma, davide, mssimpso, nikic

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D60581

This allows it to work properly with masked inc/dec for avx512. Those
would have a vselect as the root node so didn't get a chance to call
combineIncDecVector.

This also simplifies the logic because we don't have to manage
the topological ordering.

This includes a fix for cases where things get marked as overdefined in
ResolvedUndefsIn, but we later discover a constant. To avoid crashing,
we consistently bail out on overdefined values in the visitors. This is
similar to the previous behavior with forcedconstant.

This reverts the revert commit 02b72f56.

So far, all non-COFF-related Emit* functions have been de-capitalized.

Reported by @lbenes (Luke Benes)

I was reported that with commit:
https://github.com/llvm/llvm-project/commit/d3963051c490

gcc-9.2 is giving the warning below.
This should help (I have no gcc 9.2 to test).

[ 57%] Building CXX object tools/obj2yaml/CMakeFiles/obj2yaml.dir/elf2yaml.cpp.o
/llvm/tools/obj2yaml/elf2yaml.cpp: In instantiation of ‘llvm::Expected<llvm::ELFYAML::Object*>
{anonymous}::ELFDumper<ELFT>::dump() [with ELFT = llvm::object::ELFType<llvm::support::little, false>]’:
/llvm/tools/obj2yaml/elf2yaml.cpp:1218:31:   required from ‘llvm::Error elf2yaml(llvm::raw_ostream&,
const llvm::object::ELFFile<ELFT>&) [with ELFT = llvm::object::ELFType<llvm::support::little, false>]’
/llvm/tools/obj2yaml/elf2yaml.cpp:1231:47:   required from here
/llvm/tools/obj2yaml/elf2yaml.cpp:207:41: warning: comparison of integer expressions of different
signedness: ‘llvm::support::detail::packed_endian_specific_integral<unsigned int, llvm::support::little, 1>::value_type’ {aka ‘unsigned int’} and ‘int’ [-Wsign-compare]
  207 |     if (!SymTab || SymTabShndx->sh_link != SymTab - Sections.begin())
/llvm/tools/obj2yaml/elf2yaml.cpp: In instantiation of ‘llvm::Expected<llvm::ELFYAML::Object*>
{anonymous}::ELFDumper<ELFT>::dump() [with ELFT = llvm::object::ELFType<llvm::support::big, false>]’:
...

As noted on D74621, the bswap intrinsic has a self imposed limitation that the type's bitwidth must be divisible by 16, but there's no reason that APInt::byteSwap must have the same limitation, given that it can already handle any byte width.

This commit fixes the broken tests after
commit b6a9fe20
on the expensive check builder:
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-ubuntu/builds/2884

We can just byteSwap the entire uint64_t VAL and then shift down into place like we do for the multi-word case.

rGf0181cc7 added specific tests up to i64, this adds a general loop to test some basic byte moves for larger APInts.

This hopefully fixes up the expensive checks bot.

Summary:
This patch is extracted from D74308.

It patches all usages of WithColor::error() and WithColor::warning
in DebugInfoDWARF library.

Depends on D74481

Reviewers: jhenderson, dblaikie, probinson, aprantl, JDevlieghere

Reviewed By: JDevlieghere

Subscribers: hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D74635

deduction.

As suggested in https://github.com/llvm/llvm-project/issues/120, don't try to
generate the extension file from clang, only do the linking step.

Fixes the regression introduced in D74464 when running cmake inside the clang
directory.

Differential Revision: https://reviews.llvm.org/D74602

Summary:
this review is extracted from D74308.

It creates two error handlers which allow to redefine error
reporting routine and should be used for all places
where errors are reported:

  std::function<void(Error)> RecoverableErrorHandler = defaultErrorHandler;
  std::function<void(Error)> WarningHandler = defaultWarningHandler;

It also creates accessors to above handlers which should be used to
report errors.

  function_ref<void(Error)> getRecoverableErrorHandler() {
    return RecoverableErrorHandler;
  }

  function_ref<void(Error)> getWarningHandler() { return WarningHandler; }

It patches all error reporting places inside DWARFContext and DWARLinker.

Reviewers: jhenderson, dblaikie, probinson, aprantl, JDevlieghere

Reviewed By: jhenderson, JDevlieghere

Subscribers: hiraditya, llvm-commits

Tags: #llvm, #debug-info

Differential Revision: https://reviews.llvm.org/D74481

In addition to a single bit per memory locations, e.g., globals and
arguments, we now collect more information about the actual accesses,
e.g., what instruction caused it, was it a read/write/read+write, and
what the underlying base pointer was. Follow up patches will make
explicit use of this.

Reviewed By: uenoku

Differential Revision: https://reviews.llvm.org/D73527

In b91c2673 I accidentally introduced fixes that were not necessary
after 1a93285c. All but the `llvm_unreachable` are reverted again.

Add support for Master and Critical directive in the OMPIRBuilder. Both make use of a new common interface for emitting inlined OMP regions called `emitInlinedRegion` which was added in this patch as well.

Also this patch modifies clang to use the new directives when  `-fopenmp-enable-irbuilder` commandline option is passed.

Reviewed By: jdoerfert

Differential Revision: https://reviews.llvm.org/D72304