Merge llvm-project main llvmorg-19-init-18630-gf2ccf80136a0

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-19-init-18630-gf2ccf80136a0, t

Merge llvm-project main llvmorg-19-init-18630-gf2ccf80136a0

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-19-init-18630-gf2ccf80136a0, the
last commit before the upstream release/19.x branch was created.

PR: 280562
MFC after: 1 month

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Merge llvm-project main llvmorg-17-init-19304-gd0b54bb50e51

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, t

Merge llvm-project main llvmorg-17-init-19304-gd0b54bb50e51

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvm-project main llvmorg-17-init-19304-gd0b54bb50e51, the
last commit before the upstream release/17.x branch was created.

PR: 273753
MFC after: 1 month

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Merge llvm-project main llvmorg-16-init-18548-gb0daacf58f41

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-16-init-18548-gb0daacf58f41.

PR: 271047
MFC af

Merge llvm-project main llvmorg-16-init-18548-gb0daacf58f41

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-16-init-18548-gb0daacf58f41.

PR: 271047
MFC after: 1 month

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Merge llvm-project main llvmorg-15-init-16436-g18a6ab5b8d1f

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-16436-g18a6ab5b8d1f.

PR: 265425
MFC af

Merge llvm-project main llvmorg-15-init-16436-g18a6ab5b8d1f

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-16436-g18a6ab5b8d1f.

PR: 265425
MFC after: 2 weeks

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Merge llvm-project main llvmorg-15-init-15358-g53dc0f10787

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-15358-g53dc0f10787.

PR: 265425
MFC afte

Merge llvm-project main llvmorg-15-init-15358-g53dc0f10787

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-15-init-15358-g53dc0f10787.

PR: 265425
MFC after: 2 weeks

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Merge llvm-project main llvmorg-14-init-13186-g0c553cc1af2e

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-13186-g0c553cc1af2e.

PR: 261742
MFC af

Merge llvm-project main llvmorg-14-init-13186-g0c553cc1af2e

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-13186-g0c553cc1af2e.

PR: 261742
MFC after: 2 weeks

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Merge llvm-project main llvmorg-14-init-10186-gff7f2cfa959b

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-10186-gff7f2cfa959b.

PR: 261742
MFC af

Merge llvm-project main llvmorg-14-init-10186-gff7f2cfa959b

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-14-init-10186-gff7f2cfa959b.

PR: 261742
MFC after: 2 weeks

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Merge llvm-project main llvmorg-13-init-16847-g88e66fa60ae5

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-13-init-16847-g88e66fa60ae5, the last commit bef

Merge llvm-project main llvmorg-13-init-16847-g88e66fa60ae5

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-13-init-16847-g88e66fa60ae5, the last commit before
the upstream release/13.x branch was created.

PR: 258209
MFC after: 2 weeks

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Merge llvm-project main llvmorg-12-init-17869-g8e464dd76bef

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-12-init-17869-g8e464dd76bef, the last commit bef

Merge llvm-project main llvmorg-12-init-17869-g8e464dd76bef

This updates llvm, clang, compiler-rt, libc++, libunwind, lld, lldb and
openmp to llvmorg-12-init-17869-g8e464dd76bef, the last commit before the
upstream release/12.x branch was created.

PR: 255570
MFC after: 6 weeks

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Merge commit 585a3cc31 from llvm git (by me):

Fix -Wdeprecated-copy-dtor and -Wdeprecated-dynamic-exception-spec
warnings.

Summary:
The former are like:

libcxx/include/typeinfo:322:11: w

Merge commit 585a3cc31 from llvm git (by me):

Fix -Wdeprecated-copy-dtor and -Wdeprecated-dynamic-exception-spec
warnings.

Summary:
The former are like:

libcxx/include/typeinfo:322:11: warning: definition of implicit copy
constructor for 'bad_cast' is deprecated because it has a
user-declared destructor [-Wdeprecated-copy-dtor]
virtual ~bad_cast() _NOEXCEPT;
^
libcxx/include/typeinfo:344:11: note: in implicit copy constructor
for 'std::bad_cast' first required here
throw bad_cast();
^

Fix these by adding an explicitly defaulted copy constructor.

The latter are like:

libcxx/include/codecvt:105:37: warning: dynamic exception
specifications are deprecated [-Wdeprecated-dynamic-exception-spec]
virtual int do_encoding() const throw();
^~~~~~~

Fix these by using the _NOEXCEPT macro instead.

Reviewers: EricWF, mclow.lists, ldionne, #libc

Reviewed By: EricWF, #libc

Subscribers: dexonsmith, libcxx-commits

Tags: #libc

Differential Revision: https://reviews.llvm.org/D76150

This is because we use -Wsystem-headers during buildworld, and the two
warnings above are now triggered by default with clang 10, preventing
most C++ code from compiling without NO_WERROR.

Requested by: brooks
MFC after: 6 weeks
X-MFC-With: 358851
Differential Revision: https://reviews.freebsd.org/D24049

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Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo". That i

Move all sources from the llvm project into contrib/llvm-project.

This uses the new layout of the upstream repository, which was recently
migrated to GitHub, and converted into a "monorepo". That is, most of
the earlier separate sub-projects with their own branches and tags were
consolidated into one top-level directory, and are now branched and
tagged together.

Updating the vendor area to match this layout is next.

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Merge libc++ trunk r366426, resolve conflicts, and add FREEBSD-Xlist.

Merge libc++ trunk r351319, and resolve conflicts.

Merge libc++ trunk r338150, and resolve conflicts.

Merge libc++ trunk r321017 to contrib/libc++.

Merge llvm, clang, lld, lldb, compiler-rt and libc++ r302418, and update
build glue.

Merge libc++ trunk r300890, and update build glue.

Merge libc++ r291274, and update the library Makefile.

Revert r305496 for now, since jbeich@ found a good upstream fix for the
Firefox port.

Move inclusion of <cstdio> and <cstdlib> in the -fno-exceptions case to
the end of libc++'s <exception>. This is a workaround for building
Firefox, which generates a rather convoluted maze of stand

Move inclusion of <cstdio> and <cstdlib> in the -fno-exceptions case to
the end of libc++'s <exception>. This is a workaround for building
Firefox, which generates a rather convoluted maze of standard library
wrapper headers, and this leads to an unfortunate sequence of:

1. wrapper <new> includes libc++ <new>,
2. which includes wrapper <exception>,
3. which includes libc++ <exception>,
4. which includes wrapper <cstdio> (because of -fno-exception),
5. which includes libc++ <new> again,
6. which includes mozalloc.h,
7. which tries to declare operator new with std::bad_alloc,
8. which gives an error because std::bad_alloc is not yet defined.

The <new> inclusion at step 5 does nothing, because the header guard for
<new> was already encountered in step 1. Then when moz_alloc.h tries to
use std::bad_alloc, it is not yet defined, because we are still busy
processing <exception> (where this class is defined) from step 3.

Mozilla has https://bugzilla.mozilla.org/show_bug.cgi?id=1269171 for
this, reported by Jan Beich (jbeich@), but when the fix for it is
applied to Firefox, we get into another, similar problem situation:

1. some header includes wrapper <exception>,
2. which includes libc++ <exception>,
3. which includes wrapper <cstdio> (because of -fno-exceptions),
4. which includes mozalloc.h,
5. which includes wrapper <new>,
6. which includes libc++ <new>,
7. which gives an error defining std::bad_alloc, because std::exception
is not yet defined.

At step 3, we were at the top of libc++'s <exception>, and at that point
std::exception is not yet defined. At step 6, <new> does include
<exception> again, but similar to step 5 in the previous problem case,
the header guard was already encountered, so the whole header is
skipped.

In upstream libc++'s later revisions r279744 and r279763, the reason for
including <cstdio> and <cstdlib> was nullified again, but these commits
are rather large and intrusive. Therefore, move the includes to the
bottom of the file, just before where they are needed. At that point,
std::exception is already fully defined.

Suggested by: Jörg Sonnenberger

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Update libc++ to release_39 branch r279689.

Update libc++ to 3.8.0. Excerpted list of fixes (with upstream revision
numbers):

r242679 Implement the plugin-based version of std::search. There are no
searchers yet; those are coming soo

Update libc++ to 3.8.0. Excerpted list of fixes (with upstream revision
numbers):

r242679 Implement the plugin-based version of std::search. There are no
searchers yet; those are coming soon.
r242682 Implement the default searcher for std::experimental::search.
r243728 Add <experimental/any> v2.
r245330 implement more of N4258 - Cleaning up noexcept in the standard
library. Specifically add new noexcept stuff to vector and
string's move-assignment operations
r245334 Fix PR22606 - Leak pthread_key with static storage duration to
ensure all of thread-local destructors are called.
r245335 Fix PR23589: std::function doesn't recognize null pointer to
varargs function.
r247036 Implementation of Boyer-Moore and Boyer-Moore-Horspool
searchers for the LFTS.
r249325 Implement LWG#2063, and update the issues links to point to the
github generated pages
r249738 Split <ctype.h> out of <cctype>.
r249739 Split <errno.h> out of <cerrno>.
r249740 Split <float.h> out of <cfloat>.
r249741 Split <inttypes.h> out of <cinttypes>.
r249742 Split <math.h> out of <cmath>.
r249743 Split <setjmp.h> out of <csetjmp>.
r249761 Split <stddef.h> out of <cstddef>.
r249798 Split <stdio.h> out of <cstdio>.
r249800 Split <stdlib.h> out of <cstdlib>.
r249889 Split <wchar.h> out of <cwchar>.
r249890 Split <wctype.h> out of <cwctype>.
r249929 Split <string.h> out of <cstring>.
r250254 ABI versioning macros for libc++.
r251246 Fix LWG#2244: basic_istream::seekg
r251247 Fix LWG#2127: Move-construction with raw_storage_iterator.
r251253 Fix LWG#2476: scoped_allocator_adaptor is not assignable
r251257 Fix LWG#2489: mem_fn() should be noexcept
r251618 Implement P0004R1 'Remove Deprecated iostreams aliases'
r251766 Implement the first part of P0006R0: Adopt Type Traits Variable
Templates for C++17.
r252195 Implement P0092R1 for C++1z
r252350 Allow deque to handle incomplete types.
r252406 More of P0006R0: type traits variable aliases for C++17.
r252407 Implement LWG#2353: std::next is over-constrained
r252905 Implement P0074: Making owner_less more flexible
r253215 Implement P0013R1: Logical Operator Type Traits.
r253274 Implement P0007: Constant View: A proposal for a std::as_const
helper function template.
r254119 Add static_assert to set/multiset/map/multimap/forward_list/deque
that the allocator's value_type match the container's value_type.
r254283 Implement more of P0006; Type Traits Variable Templates.
r255941 LWG2485: get() should be overloaded for const tuple&&.
r256325 Fix LWG Issue #2367 - Fixing std::tuple and std::pair's default
constructors.
r256652 Fix for ALL undefined behavior in <list>.
r256859 First half of LWG#2354: 'Unnecessary copying when inserting
into maps with braced-init syntax'

Exp-run: antoine
Relnotes: yes

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Update libc++ to 3.7.0 release.

Import libc++ 3.4 release. This contains a lot of bugfixes, and some
preliminary support for C++1y.

MFC after: 3 weeks

Merge libc++ trunk r180598. Contains several minor cleanups and bug
fixes, no major changes.

MFC after: 2 weeks