const auto & var = ObjectWithSideEffects();

Fixes https://github.com/llvm/llvm-project/issues/54489

Reviewed By: aaron.ballman

Differential Revision: https://reviews.llvm.org/D122661

Right now `populateVectorInsertExtractStridedSliceTransforms` contains
two categories of patterns, one for decomposing high-D insert/extract
strided slices, the other for lowering them to shuffle ops.
They are at different levels---the former is in the middle, while
the latter is a step of final lowering. Split them to give users
more control of which pattern to pick.

This means break down the previous `VectorExtractStridedSliceOpRewritePattern`,
which is doing two things together.

Also renamed those patterns to be clearer.

Reviewed By: ThomasRaoux

Differential Revision: https://reviews.llvm.org/D123137

NFC
When no actual change happens there's no need to notify the
observers about the fact the register class is being constrained.
So we should avoid notifying observers when no change has
happened, because this can dramatically affect compile
time for particular test cases.

Reviewed By: dsanders, arsenm

Differential Revision: https://reviews.llvm.org/D122615

This patch implements stderr/stdout forwarding on windows.
This was previously not implemented in D99974.
I added separate callbacks so the output can be sent to the different channels VSCode provides (OutputType::Stdout, OutputType::Stderr, OutputType::Console).

This patch also passes a log callback handler to SBDebugger::Create to be able to see logging output when it is enabled.

Since the output is now redirect on early startup I removed the calls to SetOutputFileHandle/SetErrorFileHandle, which set them to /dev/null.

I send the output of stderr/stdout/lldb log to OutputType::Console

Reviewed By: wallace

Differential Revision: https://reviews.llvm.org/D123025

This class is intended to be used in cases where a class is being used
on a va_list. It provides destruction and copy semantics with small
overhead. This is intended to be used in printf.

Reviewed By: sivachandra, lntue

Differential Revision: https://reviews.llvm.org/D123061

D122746 missed the following tests, so this patch adds them.

This patch refactors D122949, which marked the following tests XFAIL, but it makes more sense to temporarily add `--format=gnu` option because these tests aren’t testing `llvm-ar` and AIX won’t lose their coverage.

Reviewed By: jhenderson, MaskRay, DiggerLin

Differential Revision: https://reviews.llvm.org/D123063

In order to use the MLIR LSP server in Emacs, first the `mlir-lsp-client.el`
has to be loaded via elisp and then, one should call `lsp-mlir-setup` function
to setup the LSP client. After that simply calling the `lsp` function while
the `mlir-mode` is active with result in finding the language server (default
to `mlir-lsp-server`) via the `lsp-mlir-server-executable` customization variable
and connecting to it by the LSP library. Users who use MLIR's language server
library to create their own server can simply set the variable `lsp-mlir-server-executable`
to point to their own implementation executable.

Reviewed By: tschuett

Differential Revision: https://reviews.llvm.org/D123002

false negatives when dfsan-combine-pointer-labels-on-load=0 and
dfsan-combine-offset-labels-on-gep=0 miss data flows through lookup tables.

Example case:
https://github.com/abseil/abseil-cpp/blob/628a2825f8dc0219964886e7cc3f7f519e3bd950/absl/strings/ascii.h#L182

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D122787

This wraps up the encoding refactoring of all M68k instructions.

This is both smaller and faster.

Differential Revision: https://reviews.llvm.org/D123144

Add support for computing the symbolic integer lexmin of a polyhedron.
This finds, for every assignment to the symbols, the lexicographically
minimum value attained by the dimensions. For example, the symbolic lexmin
of the set

`(x, y)[a, b, c] : (a <= x, b <= x, x <= c)`

can be written as

```
x = a if b <= a, a <= c
x = b if a <  b, b <= c
```

This also finds the set of assignments to the symbols that make the lexmin unbounded.

This was previously landed in da92f926 and
reverted in b238c252 due to a build failure
in the code. Re-landing now with a fixed build.

Reviewed By: Groverkss

Differential Revision: https://reviews.llvm.org/D122985

I miss more automatically refactoring functions when working with already running code, so I am making some small addition that I hope help more people.

This works by checking if the function is a method (CXXMethodDecl), then collecting information about the function that the code is being extracted, looking for the declaration if it is out-of-line, creating the declaration if it is necessary and putting the extracted function as a class-method.

This is my first code review request, sorry if I did something wrong.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D122698

Follow-up on D117226 for createSections.

Reviewed By: shraiysh

Differential Revision: https://reviews.llvm.org/D117835

Since enumerators may not be available in every translation unit they
can't be reliably used to name entities. (this also makes simplified
template name roundtripping infeasible - since the expected name could
only be rebuilt if the enumeration definition could be found (or only if
it couldn't be found, depending on the context of the original name))

On Windows, like on macOS and FreeBSD, widening char(-5) in the
"C" locale succeeds and produces L'\u00fb'.

Switch widen_many to test \xfb instead of \x85; the mingw
version of btowc widens \x85 in the "C" locale into
\u2026 (which is the corresponding character according to the
Windows-1252 codepage), while Microsoft CRT's btowc widens it
into \u0085 (just like macOS and FreeBSD). Switch this to test \xfb
which is the character tested by the widen_1 test (as `char(-5)`),
which gets handled the same by all Windows implementations of btowc.

Differential Revision: https://reviews.llvm.org/D121003

Fixes #54758

The DXIL Prepare pass handles the IR mutations required to convert
modern LLVM IR into something that more closely resembles LLVM-3.7 IR
so that the DXIL bitcode writer can emit 3.7 IR.

This change adds the codegen pass handling the first two IR
transformations:

* stripping new function attributes
* converting fneg into fsub

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D122081

This removes tens of warnings from build logs that we can't do
anything about.

Reviewed By: pcf000

Differential Revision: https://reviews.llvm.org/D122927

We can do this conversion by converting the same sized integer type, then compare the result with 0. The conversion is undefined if the converted FP value doesn't fit in an i1.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D122678

Improve the documentation for the platform functions that take a process
host architecture as input.

Differential revision: https://reviews.llvm.org/D122767

I also added a call to help in the test which was crashing before
the test, and not after.

This reverts commit 61949925.

Fix undefined behavior in AppleObjCRuntimeV2 where we were left shifting
a signed value. This also removes redundant casts of unobfuscated to
uint64_t which it already is.

rdar://91242879

Differential revision: https://reviews.llvm.org/D123098

The issue affects targets supporting fast-lzcnt such as btver2.
This removes extraneous zext/trunc node insertions to fix the infinite
loop.
This fixes Issue https://github.com/llvm/llvm-project/issues/54694

Differential Revision: https://reviews.llvm.org/D122900

Reviewed By: RKSimon, spatel, lebedev.ri

This is to reduce the size of the trace further and has appreciable results.

Differential Revision: https://reviews.llvm.org/D122991

Extend the work done in D106376 to include masked gathers

Differential Revision: https://reviews.llvm.org/D122896

[MIPS] selectAddrFrameIndexOffset - use cast<> instead of dyn_cast<> to avoid dereference of nullptr

The pointer is used immediately below, so assert the cast is correct instead of returning nullptr

[libc++] add global variable template std::views::empty
Note it is neither a range adaptor, nor a CPO. It is simplify a global variable template.

Reviewed By: #libc, Mordante

Differential Revision: https://reviews.llvm.org/D122996

Originally in the returnOp conversion, the result type was changing to bare
pointer if the type was a memref. This is incorrect as conversion to bare
pointer can only be done if the memref has static shape, strides and offset.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D123121

This iterator is used to test code that only needs to satisfy the
output_iterator concept. Follow-up changes will use this iterator in
older language Standards.

Reviewed By: ldionne, #libc, philnik, var-const

Differential Revision: https://reviews.llvm.org/D122072

Fix https://github.com/flang-compiler/f18-llvm-project/issues/1416.

The `constRows` variable was being decremented too soon, causing the
last constant interior dimension extent being used to multiply the GEP
offset. This lead to wrong address computation and caused segfaults.

Note: also upstream fir.embox tests that can be upstreamed.

Differential Revision: https://reviews.llvm.org/D123130

Do not use the shift of a fir.embox to set lower bounds if there is
a fir.slice operand. This matches Fortran semantics where lower bounds
of array sections are ones.
Note that in case there is a fir.slice, the array shift may be provided
because it is used to calculate the origin/base address of an array slice.

Add a TODO for substring codegen since I noticed it was not upstreamed
yet and would cause some program to silently compile incorrectly.

Differential Revision: https://reviews.llvm.org/D123123

Currently, clang-offload-bundler has -inputs and -outputs options that accept
values with comma as the delimiter. This causes issues with file paths
containing commas, which are valid file paths on Linux.

This add two new options -input and -output, which accept one single file,
and allow multiple instances. This allows arbitrary file paths. The old
-inputs and -outputs options will be kept for backward compatibility, but
are not allowed to be used with -input and -output options for simplicity.
In the future, -inputs and -outputs options will be phasing out.

RFC: https://discourse.llvm.org/t/rfc-adding-input-and-output-options-to-clang-offload-bundler/60049

Patch by: Siu Chi Chan

Reviewed by: Yaxun Liu

Differential Revision: https://reviews.llvm.org/D120662

This lands 4cb38bfe again.

[libc++] Tidy up tests for deduction guides and other compile-time failing properties in std::string

Instead of using `.fail.cpp` tests, use `.verify.cpp` to check for the
exact reason of the failure. In the case of deduction guides, use SFINAE
based tests instead since that is our preferred way of testing those.

Finally, ensure that we actually run the test in `iter_alloc_deduction.pass.cpp`,
since we were not running anything before.

Differential Revision: https://reviews.llvm.org/D123055

https://reviews.llvm.org/D119414 clarified that this is legal IR,
so handle it gracefully. (We could aggressively use the fact that
the pointer must be a null pointer in that case, but I'm not
bothering with that.)

Fixes https://github.com/llvm/llvm-project/issues/53693.

This patch switches CanonicalInclude mappings to use `llvm::sys::fs::UniqueID` for a stable file representation because the `FileEntry::getName()` results turn out to be changing throughout the lifetime of a program (exposed in D120306). This patch makes it possible for D120306 to be re-landed and increases overall stability.

Reviewed By: sammccall

Differential Revision: https://reviews.llvm.org/D123031