This was only applying the deeper nested zext pattern, and missing the
special case code size fold.

[clang-tidy] modernize-use-using uses AST and now supports struct defintions and multiple types in a typedef

Summary:
It now handles `typedef`s that include comma-separated multiple types, and handles embedded struct definitions, which previously could not be automatically converted.

For example, with this patch `modernize-use-using` now can convert:

typedef struct { int a; } R_t, *R_p;

to:

using R_t = struct { int a; };
using R_p = R_t*;

`-ast-dump` showed that the `CXXRecordDecl` definitions and multiple `TypedefDecl`s come consecutively in the tree, so `check()` stores information between calls to determine when it is receiving a second or additional `TypedefDecl` within a single `typedef`, or when the current `TypedefDecl` refers to an embedded `CXXRecordDecl` like a `struct`.

Reviewers: alexfh, aaron.ballman

Patch by: poelmanc

Subscribers: riccibruno, sammccall, cfe-commits, aaron.ballman

Tags: clang-tools-extra, clang

Differential Revision: https://reviews.llvm.org/D70270

This change adds the following benchmarks:

- StringAssignStr
Assign a const basic::string& value

- StringAssignAsciiz
Assign a const char* asciiz value

StringAssignAsciizMix
Assign mixed long/short const char* asciiz values

- StringResizeDefaultInit
Resize default init benchmark

Patch by Martijn Vels (mvels@google.com)
Reviewed as D72343

Now that we generate decent code for (v2i64 (setlt zero, X)) on pre-sse4.2 targets I think we can use this now.

Differential Revision: https://reviews.llvm.org/D72354

On a dirty build directory the new mkdir fails because the file already
exists and is not a directory.

This test was passing even when the output of lldb.target was empty.
I've made the test more strict by checking explicitly for the target
name and by using CHECK-NEXT lines.

This reverts commit 640d0ba8.

Configure CMake to setup source-groups for Polly. Source groups
describe how source files should be organized in IDEs. By default, all
headers are dumped into one folder under PollyCore and all source files
into another. On disk, these files are organized into folders, but this
isn't reflected in the IDE. This change uses CMake source groups to have
the IDE reflect the on disk layout. This will make it easier to visualize
the project structure for users of Visual Studio and XCode

Patch by Christopher Tetreault <ctetreau@quicinc.com>

Reviewed By: Meinersbur, grosser

Differential Revision: https://reviews.llvm.org/D72117

The optimization to turn an add into a sub isn't triggering when the
pattern to use the zeroed high bits is used.

Now that overridable default operands work, there's no reason to use
complex patterns to just produce 0s.

We weren't treating i16->f16 casts as legal on targets with these
instructions, and always using a pair of casts through i32.

Extend the SBTarget class with a string conversion operator and reuse
the same code between Python and Lua. This should happen for all the SB
classes, but I'm doing just this one as an example and for use in a test
case.

https://reviews.llvm.org/D61446 introduced a new function to process
pass plugins that used CMAKE_BINARY_DIR. This is problematic when LLVM
is a subproject. Instead use LLVM_BINARY_DIR to get the right relative
directory for cmake.

Patch by Alan Baker <alanbaker@google.com>

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D72109

Summary:
Every powerpc64le platform uses elfv2.

For powerpc64, the environments "elfv1" and "elfv2" were added for
FreeBSD ELFv1->ELFv2 migration in D61950.  FreeBSD developers have
decided to use OS versions to select ABI, and no one is relying on the
environments.

Also use elfv2 on powerpc64-linux-musl.

Users can always use -mabi=elfv1 and -mabi=elfv2 to override the default
ABI.

Reviewed By: adalava

Differential Revision: https://reviews.llvm.org/D72352

Use canonical decls instead of mangled names in the set of already
emitted decls. This allows to reduce the number of function calls for
getting declarations mangled names and speedup the compilation.

Conservatively always save + restore LR in noreturn functions.

These functions do not end in a RET, and so they aren't guaranteed to have an
instruction which uses LR in any way. So, as a result, you can end up in
unfortunate situations where you can't backtrace out of these functions in a
debugger.

Remove the old noreturn test, and add a new one which is more descriptive.

Remove the restriction that we can't outline from noreturn functions as well
since we now do the right thing.

[X86] Improve lowering of (v2i64 (setgt X, -1)) on pre-SSE2 targets. Enable v2i64 in foldVectorXorShiftIntoCmp.

Similar to D72302 but for the canonical form for the opposite case. I've changed foldVectorXorShiftIntoCmp to form a target independent setcc node instead of PCMPGT now and enabled its for v2i64 on pre-SSE4.2 targets. The setcc should eventually get lowered to PCMPGT or the new v2i64 sequence.

Differential Revision: https://reviews.llvm.org/D72318

Without sse4.2 a v2i64 setlt needs to expand into a pcmpgtd, pcmpeqd, 3 shuffles, and 2 logic ops. But if we're only interested in the sign bit of the i64 elements, we can just use one pcmpgtd and shuffle the odd elements to the even elements.

Differential Revision: https://reviews.llvm.org/D72302

Summary:
GIMatchTree's job is to build a decision tree by zipping all the
GIMatchDag's together.

Each DAG is added to the tree builder as a leaf and partitioners are used
to subdivide each node until there are no more partitioners to apply. At
this point, the code generator is responsible for testing any untested
predicates and following any unvisited traversals (there shouldn't be any
of the latter as the getVRegDef partitioner handles them all).

Note that the leaves don't always fit into partitions cleanly and the
partitions may overlap as a result. This is resolved by cloning the leaf
into every partition it belongs to. One example of this is a rule that can
match one of N opcodes. The leaf for this rule would end up in N partitions
when processed by the opcode partitioner. A similar example is the
getVRegDef partitioner where having rules (add $a, $b), and (add ($a, $b), $c)
will result in the former being in the partition for successfully
following the vreg-def and failing to do so as it doesn't care which
happens.

Depends on D69151

Fixed the issues with the windows bots which were caused by stdout/stderr
interleaving.

Reviewers: bogner, volkan

Reviewed By: volkan

Subscribers: lkail, mgorny, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D69152

Fixes warning: loop variable 'E' of type 'const llvm::StringRef' creates a copy from type 'const llvm::StringRef' [-Wrange-loop-analysis]

If standalone OpenMP declaration pragma, like declare mapper or declare
reduction, is declared in the class context, it may reference a member
(data or function) in its internal expressions/statements. So, the
parsing of such pragmas must be dalayed just like the parsing of the
member initializers/definitions before the completion of the class
declaration.

Summary: Fixes https://github.com/clangd/clangd/issues/227

Reviewers: sammccall

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71644

Summary: Also fix some bugs in the testcases which this exposed.

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

Tags: #clang

Differential Revision: https://reviews.llvm.org/D72066

This got flagged by msan.

Differential Revision: https://reviews.llvm.org/D72289

It turns out it is useful to be able to define the deref type as void.
In case we have a type erased owner, we want to express that the pointee
can be basically any type. It should not be unnatural to have a void
deref type as we already familiar with "pointers to void".

Differential Revision: https://reviews.llvm.org/D72097

SUMMARY:
In this patch, we map mergeable const objects to the read-only section in the same manner as const objects that are not mergeable.

Reviewers: hubert.reinterpretcast,jasonliu
Subscribers: wuzish, nemanjai, hiraditya

Differential Revision: https://reviews.llvm.org/D71551

Add this option to change the default launch bounds.

Differential Revision: https://reviews.llvm.org/D71221

The imm folding optimization pattern failed to import. The instruction
pattern was already working, but failing to fail on SGPR inputs.

Signed-off-by: Med Ismail Bennani <medismail.bennani@gmail.com>