We need to make sure that PluginAttrInstances is deleted before shared libraries
are unloaded, because otherwise when deleting its contents we'll try to access
a virtual destructor which no longer exists.

As shared libraries are managed using ManagedStatic we can do this by also using
ManagedStatic for PluginAttrInstances as ManagedStatics are deleted in reverse
order of construction and we know that PluginAttrInstances will only be
accessed, and thus constructed, after shared libraries have been loaded.

Revert "Promote nameless lambda used by dl_iterate_phdr to named function to clean up control flow inside findUnwindSections. Also, expose the data structure"

This reverts commit d9337123.

The commit broke the build in several configurations (including
Windows and bare-metal). For details see comments in
https://reviews.llvm.org/D75480

Differential Revision: https://reviews.llvm.org/D75578

This prevents calling Breakpoint::shared_from_this of an object that is not owned by any shared_ptr.

Differential Revision: https://reviews.llvm.org/D74557

Summary:
A test is passing `-o -` to lld in the hope of writing the output to
standard out but that is not the case. Instead it creates a file named
`-.lto.o`. This fixes it by creating a temporary file in the work
directory.

Differential Revision: https://reviews.llvm.org/D75605

This command had nearly identical code for the "then" and "else"
branches of the "if (m_options.num_instructions != 0)" condition.

This patch factors out the common parts of the two blocks to reduce
duplication.

Summary:
Treat C# object initializers as braced lists.

Allow lambdas inside C# braced lists.

Reviewers: krasimir

Reviewed By: krasimir

Subscribers: cfe-commits, MyDeveloperDay

Tags: #clang-format, #clang

Differential Revision: https://reviews.llvm.org/D75473

Summary:
This adds an rsqrt op to the standard dialect, and lowers
it as 1 / sqrt to the LLVM dialect.

Differential Revision: https://reviews.llvm.org/D75353

Summary:
getInitialLength is a *DWARF*DataExtractor method so I had to "upgrade"
some DataExtractors to be able to make use of it.

Reviewers: ikudrin, jhenderson, probinson

Subscribers: aprantl, hiraditya, llvm-commits, dblaikie

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75535

Reviewers: ikudrin, jhenderson, probinson

Subscribers: hiraditya, dblaikie, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75532

Summary: Implements the @llvm.aarch64.sve.xar intrinsic

Reviewers: andwar, c-rhodes, dancgr, efriedma, rengolin

Reviewed By: andwar

Subscribers: tschuett, kristof.beyls, hiraditya, rkruppe, psnobl, cfe-commits, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75160

[DependenceAnalysis] Dependecies for loads marked with "ivnariant.load" should not be shared with general accesses(PR42151).

Summary:
This is second attempt to fix the problem with incorrect dependencies reported in presence of invariant load. Initial fix (https://reviews.llvm.org/D64405) was reverted due to a regression reported in https://reviews.llvm.org/D70516.

The original fix changed caching behavior for invariant loads. Namely such loads are not put into the second level cache (NonLocalDepInfo). The problem with that fix is the first level cache  (CachedNonLocalPointerInfo) still works as if invariant loads were in the second level cache. The solution is in addition to not putting dependence results into the second level cache avoid putting info about invariant loads into the first level cache as well.

Reviewers: jdoerfert, reames, hfinkel, efriedma

Reviewed By: jdoerfert

Subscribers: DaniilSuchkov, hiraditya, bmahjour, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D73027

Use castAs if we know the cast should succeed (or we're dereferencing without check), the castAs will assert as well so we can remove local non-null asserts.

If SimplifyDemandedBits succeeds in simplifying the byte src, add the CVT_F32_UBYTE node back to the worklist as we might be able to simplify further.

Yet another step towards removing SelectionDAG::GetDemandedBits.

This builder provides a convenient way for targets to lower various matrix
operations to LLVM IR, making use of matrix intrinsics where available.

Reviewers: anemet, Gerolf, hfinkel, andrew.w.kaylor, LuoYuanke

Reviewed By: anemet

Differential Revision: https://reviews.llvm.org/D72280

- Added handling of thin archives to symtab.test.
- Added handling of newlines to response.test.
- 62fa3332 exposed behaviour
  regarding the use of -- on the command line. Added
  double-hyphen.test to cover this.

Differential Revision: https://reviews.llvm.org/D73333

Summary:
This changes introduces an enum to represent dependencies as a bitmask
and extract common patterns from code that computes dependency bits into
helper functions.

Reviewers: rsmith, martong, shafik, ilya-biryukov, hokein

Subscribers: hokein, sammccall, Mordante, riccibruno, merge_guards_bot, rnkovacs, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71920

Summary: Replace usage of RawLexer with syntax tokens inside ReplayPreamble.

Reviewers: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D74842

Summary:
Selection tree was performing an early claim only for VarDecls, but
there are other cases where we can have declarators, e.g. FieldDecls. This patch
extends the early claim logic to all types of declarators.

Fixes https://github.com/clangd/clangd/issues/292

Reviewers: sammccall

Subscribers: ilya-biryukov, MaskRay, jkorous, arphaman, usaxena95, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75106

Differential revision: https://reviews.llvm.org/D75422

We use size_t for a file offset what is wrong, because size_t is 32-bit
value on 32-bit platforms.

I was reported that after my 0b511c23
"[llvm-readobj] - Report warnings instead of errors for broken relocations."

The following error is observed on 32-bit Arch Linux:

[100%] Running all regression tests
FAIL: LLVM :: tools/llvm-readobj/ELF/relocation-errors.test (52954 of 54768)
******************** TEST 'LLVM :: tools/llvm-readobj/ELF/relocation-errors.test' FAILED ***

...
llvm-project/llvm/test/tools/llvm-readobj/ELF/relocation-errors.test:9:14:error: LLVM-NEXT: expected string not found in input
# LLVM-NEXT: warning: '[[FILE]]': unable to print relocation 1 in section 3: unable to access section [index 6] data at 0x17e7e7e8b0: offset goes past the end of file
             ^
<stdin>:9:1: note: scanning from here
/llvm-project/build/bin/llvm-readobj: warning: 'llvm-project/build/test/tools/llvm-readobj/ELF/Output/relocation-errors.test.tmp64': unable to print relocation 1 in section 3: unable to access section [index 6] data at 0xe7e7e8b0: offset goes past the end of file

This patch should fix the issue.

Summary:
The VSHLC instruction performs a left shift of a whole vector register
by an immediate shift count up to 32, shifting in new bits at the low
end from a GPR and delivering the shifted-out bits from the high end
back into the same GPR.

Since the instruction produces two outputs (the shifted vector
register and the output GPR of shifted-out bits), it has to be
instruction-selected in C++ rather than Tablegen.

Reviewers: MarkMurrayARM, dmgreen, miyuki, ostannard

Reviewed By: miyuki

Subscribers: kristof.beyls, hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D75445

Summary:
These are exactly parallel to the existing `vadciq` intrinsics, which
we implemented last year as part of the original MVE intrinsics
framework setup.

Just like VADC/VADCI, the MVE VSBC/VSBCI instructions deliver two
outputs, both of which the intrinsic exposes: a modified vector
register and a carry flag. So they have to be instruction-selected in
C++ rather than Tablegen. However, in this case, that's trivial: the
same C++ isel routine we already have for VADC works unchanged, and
all we have to do is to pass it a different instruction id.

Reviewers: MarkMurrayARM, dmgreen, miyuki, ostannard

Reviewed By: miyuki

Subscribers: kristof.beyls, hiraditya, cfe-commits, llvm-commits

Tags: #clang, #llvm

Differential Revision: https://reviews.llvm.org/D75444

Summary:
`ScopeContext` wanted to be a thing, but sadly it is dead code.

If you wish to continue the work in D19979, here was a tiny code which
could be reused, but that tiny and that dead, I felt that it is unneded.

Note: Other changes are truly uninteresting.

Reviewed By: NoQ

Differential Revision: https://reviews.llvm.org/D73519

Summary: The new way of checking fix-its is `%check_analyzer_fixit`.

Reviewed By: NoQ, Szelethus, xazax.hun

Differential Revision: https://reviews.llvm.org/D73729

Summary:
This patch introduces a way to apply the fix-its by the Analyzer:
`-analyzer-config apply-fixits=true`.

The fix-its should be testable, therefore I have copied the well-tested
`check_clang_tidy.py` script. The idea is that the Analyzer's workflow
is different so it would be very difficult to use only one script for
both Tidy and the Analyzer, the script would diverge a lot.
Example test: `// RUN: %check-analyzer-fixit %s %t -analyzer-checker=core`

When the copy-paste happened the original authors were:
@alexfh, @zinovy.nis, @JonasToth, @hokein, @gribozavr, @lebedev.ri

Reviewed By: NoQ, alexfh, zinovy.nis

Differential Revision: https://reviews.llvm.org/D69746

Summary:
hip-pinned-shadow global var should remain in the final code object irrespective
of whether it is used or not within the code. Add it to used list, so that it
will not get eliminated when it is unused.

Reviewers: yaxunl, tra, hliao

Reviewed By: yaxunl

Subscribers: hliao, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D75402

[ValueTracking] Let isGuaranteedNotToBeUndefOrPoison look into branch conditions of dominating blocks' terminators

Summary:
```
  br i1 c, BB1, BB2:
BB1:
  use1(c)
BB2:
  use2(c)
```

In BB1 and BB2, c is never undef or poison because otherwise the branch would have triggered UB.

Checked with Alive2

Reviewers: xbolva00, spatel, lebedev.ri, reames, jdoerfert, nlopes, sanjoy

Reviewed By: reames

Subscribers: jdoerfert, hiraditya, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D75401

This changes the localizer to attempt intra-block localizer of instructions
that have local uses. This is useful because sometimes the entry block itself
has many uses of constant-like instructions, which would benefit from shortening
live ranges. Previously if an inst had no non-local uses, we wouldn't add it to
the list of instructions to attempt further intra-block localization.

This gives a 0.7% geomean code size improvement on CTMark.

Differential Revision: https://reviews.llvm.org/D75555