OrcShared is the correct home for this header since Orc was split in
1d0676b5. (It should have been moved in that commit, but was overlooked).

Previously committed as 9e08e51a, and
reverted because a dependency commit was reverted. This incorporates the
following follow-on commits that were also reverted:

7e84aa1b by Simon Pilgrim
ed13d8c6 by me
95c7b6ca by Sam McCall
430d5d84 by Dave Zarzycki

to dependent declarations.

Treat an id-expression that names a local variable in a templated
function as being instantiation-dependent.

This addresses a language defect whereby a reference to a dependent
declaration can be formed without any construct being value-dependent.
Fixing that through value-dependence turns out to be problematic, so
instead this patch takes the approach (proposed on the core reflector)
of allowing the use of pointers or references to (but not values of)
dependent declarations inside value-dependent expressions, and instead
treating template arguments as dependent if they evaluate to a constant
involving such dependent declarations.

This ends up affecting a bunch of OpenMP tests, due to OpenMP
imprecisely handling instantiation-dependent constructs, bailing out
early instead of processing dependent constructs to the extent possible
when handling the template.

Previously committed as 8c1f2d15, and
reverted because a dependency commit was reverted.

the nested-name-specifier when determining whether a qualified type is
instantiation-dependent.

Previously reverted in 25a02c3d due to
causing us to reject some code. It turns out that the rejected code was
ill-formed (no diagnostic required).

if E is merely instantiation-dependent.

Previously reverted in 34e72a14;
re-committed with a fix to an issue that caused name mangling to assert.

Add nounwind attribute to avoid generating cfi instructions. Also make
global buffer 64 bytes align in lit test case.

Differential Revision: https://reviews.llvm.org/D94910

As of 8dacca94, we sign extend the atomic loaded
operand for signed subword comparisons. However, the assumption that the other
operand is correctly sign extended doesn't always hold. This patch sign extends
the other operand if it needs to be sign extended.

This is a second fix for https://bugs.llvm.org/show_bug.cgi?id=30451

Differential revision: https://reviews.llvm.org/D94058

The C++ standard wording doesn't appear to properly handle the case
where a class inherits a default constructor from a base class. Various
properties of classes are defined in terms of the corresponding property
of the default constructor, and in this case, the class does not have a
default constructor despite being default-constructible, which the
wording doesn't handle properly.

This change implements a tentative fix for these problems, which has
also been proposed to the C++ committee: if a class would inherit a
default constructor, and does not explicitly declare one, then one is
implicitly declared.

This is a additional bug fix for c5be0e0c. The distance for
the spill instructions is wrong in previous patch.

Differential Revision: https://reviews.llvm.org/D94772

This reverts commit 3bdf4507.

Post commit comments need to be addressed first.

This patch adds `A & (A && B)` -> `A && B`  (similarly for or + logical or)

Also, this patch adds `~(select C, (icmp pred X, Y), const)` -> `select C, (icmp pred' X, Y), ~const`.

Alive2 proof:
merge_and: https://alive2.llvm.org/ce/z/teMR97
merge_or: https://alive2.llvm.org/ce/z/b4yZUp
xor_and: https://alive2.llvm.org/ce/z/_-TXHi
xor_or: https://alive2.llvm.org/ce/z/2uYx_a

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D94861

Somehow commit 1f125015 added the
right code but with the wrong whitespace.

This patch teaches SimplifyCFG::SimplifyBranchOnICmpChain to understand select form of
(x == C1 || x == C2 || ...) / (x != C1 && x != C2 && ...) and optimize them into switch if possible.
D93065 has more context about the transition, including links to the list of optimizations being updated.

Differential Revision: https://reviews.llvm.org/D93943

The code here is checking to see if two sets are identical.
OtherBlocksSet should point to OtherL->getBlocksSet() instead.

Differential Revision: https://reviews.llvm.org/D94926

The implementation had a lot of boilerplate and was more complicated than
necessary. This NFC refactoring introduces a few macros to reduce code
duplication, and uses a consistent style and formatting for the whole file.

Differential Revision: https://reviews.llvm.org/D94544

After much refactoring over the last 2 weeks to the reduction
matching code, I think this change is finally ready.

We effectively broke fmax/fmin vector reduction optimization
when we started canonicalizing to intrinsics in instcombine,
so this should restore that functionality for SLP.

There are still FMF problems here as noted in the code comments,
but we should be avoiding miscompiles on those for fmax/fmin by
restricting to full 'fast' ops (negative tests are included).

Fixing FMF propagation is a planned follow-up.

Differential Revision: https://reviews.llvm.org/D94913

InstAliases don't need scheduling information so I'm not sure what
these lines were even doing. Especially since the records don't
have names.

The test fails if memkind library is accessible.

* We had let the documentation get stale and catching it up prior to proposing changes.

I've been playing a bit with the `generate_feature_test_macro_components.py` script and replaced some hardcoded values with extra code generation (generate ALL the things).
The output is the same and it makes updating the script less work for the coming 25 C++ standards (until 2 digit number overflow).

Feel free to 'veto' if you think it's overkill.

Differential Revision: https://reviews.llvm.org/D94530

* Development setup recommendations.
* Test updates to match what we actually do.
* Update cmake variable `PYTHON_EXECUTABLE` -> `Python3_EXECUTABLE` to match the upgrade to python3 repo wide.

Several subprojects have targets that do the same thing, and they all
follow the same naming convention: llvm-test-depends, clang-test-depends,
lld-test-depends, etc.

This makes libc++ consistent with other LLVM projects.
Thanks to Duncan Exon Smith for noticing and suggesting the change.

Differential Revision: https://reviews.llvm.org/D94499

Recommit "[RISCV] Add a test of vector sadd.overflow to demonstrate intrinsics with multiple scalable vector results."

This recommits 2c51bef7.

I've fixed the broken check line from when I renamed the test function.

Original commit message:
This builds on D94142 where scalable vectors are allowed in structs.

I did have to fix one scalable vector issue in the vector type
creation for these intrinsics where we used getVectorNumElements
instead of ElementCount.

Revert "[RISCV] Add a test of vector sadd.overflow to demonstrate intrinsics with multiple scalable vector results."

This reverts commit 2c51bef7.

I seem to have messed up the check lines in the test.

[RISCV] Add a test of vector sadd.overflow to demonstrate intrinsics with multiple scalable vector results.

This builds on D94142 where scalable vectors are allowed in structs.

I did have to fix one scalable vector issue in the vector type
creation for these intrinsics where we used getVectorNumElements
instead of ElementCount.

Differential Revision: https://reviews.llvm.org/D94149

The check only runs in debug mode during serialization, but
assert()-fail on:
  struct S { const int& x = 7; };
in C++ mode.

Differential Revision: https://reviews.llvm.org/D94804

This patch adds the default value of 1 to drop_begin.

In the llvm codebase, 70% of calls to drop_begin have 1 as the second
argument.  The interface similar to with std::next should improve
readability.

This patch converts a couple of calls to drop_begin as examples.

Differential Revision: https://reviews.llvm.org/D94858

sphinx processes text in backticks depending on what 'role' it has (e.g.,
`:code:\`blub\`` -> role is `code`). If no role is provided, the default role is
taken which is right now using the default value of `content`. `content` only
really makes the text cursive which isn't really useful for anything right now.

Sphinx recommends using the `any` role by default [1] as that turns text in
backticks without an explicit roles into some kind of smart reference. If we did
this in LLDB, then we could just reference SB API classes by doing `\`SBValue\``
instead of typing out the rather verbose `:py:class:`/`:py:func:`/... role
before each reference. This would be especially nice when writing the SB API
docs itself as we constantly have to reference other classes.

[1] https://www.sphinx-doc.org/en/master/usage/restructuredtext/roles.html#role-any

Reviewed By: JDevlieghere

Differential Revision: https://reviews.llvm.org/D94899

This patch reverts back to Intrinsic for the instructions for the
transactional memory extension, so nosync is not included.

The commit 18aa0be3 changed the default GotBaseSymInGotPlt to true
for AArch64.  This is different than binutils, where
_GLOBAL_OFFSET_TABLE_ points at the start or .got.

It seems to not intefere with current relocations used by LLVM.  However
as indicated by PR#40357 [1] gcc generates R_AARCH64_LD64_GOTPAGE_LO15
for -pie (in fact it also generated the relocation for -fpic).

This change is requires to correctly handle R_AARCH64_LD64_GOTPAGE_LO15
by lld from objects generated by gcc.

[1] https://bugs.llvm.org/show_bug.cgi?id=40357

DefaultAttrIntrinsics was introduced to add very common attributes to a
large set of intrinsics.

Currently the added attributes include:

    nofree nosync nounwind willreturn

I think those should hold for most AArch64 target intrinsics, but
there are too many to check manually. This patch makes most AArch64 target
intrinsics DefaultAttrsIntrinsics.

Some notable exceptions I think are exclusive loads and stores as well
as the memory barrier intrinsics, for which nosync does not apply I
think.

Reviewed By: SjoerdMeijer

Differential Revision: https://reviews.llvm.org/D94687

Add Zbt (ternary) extension code generation to the select lowering
tests since it can have a significant impact on how select is
lowered.

While we are here make the neg-abs commands more consistent with
the other tests.

Reviewed By: lenary

Differential Revision: https://reviews.llvm.org/D94798