Under the -faltivec-src-compat=gcc option, AltiVec vector initialization should
be treated as if they were compiled with gcc - which is, to emit an error when
the vectors are initialized in the parenthesized or non-parenthesized manner.
This patch implements this behaviour.

Differential Revision: https://reviews.llvm.org/D106410

Differential Revision: https://reviews.llvm.org/D105373

Put declarations/definitions of unused variables under corresponding macros
to silence clang build warnings.

Differential Revision: https://reviews.llvm.org/D106608

In a post-commit message to https://reviews.llvm.org/D102343
@MaskRay pointed out syntax errors in one of the test cases. This
patch fixes those problems, I had forgotten the colon after the CHECK- strings.

Math libraries are linked only when -lm is specified. This is because
host system could be missing rocm-device-libs.

Reviewed By: JonChesterfield, yaxunl

Differential Revision: https://reviews.llvm.org/D105981

This adds a combine for adds of reductions, distributing them so that
they occur sequentially to enable better use of accumulating VADDVA
instructions. It combines:
  add(X, add(vecreduce(Y), vecreduce(Z))) ->
    add(add(X, vecreduce(Y)), vecreduce(Z))
and
  add(add(A, reduce(B)), add(C, reduce(D))) ->
    add(add(add(A, C), reduce(B)), reduce(D))

These together distribute the add's so that more reductions can be
selected to VADDVA.

Differential Revision: https://reviews.llvm.org/D106532

This patch should fix the build we observe when building LLVM from scratch.

Differential Revision: https://reviews.llvm.org/D107156

Also, improve tests for std::destroy and std::destroy_n so that they
check for array support.

These changes are part of http://wg21.link/p0896 (the One Ranges proposal).

Differential Revision: https://reviews.llvm.org/D106916

This is a gauage metric that sets particular remote-index instances as
used. It should enable accumulation of multiple streams to see number of clangd
processes making use of remote index, broken down by remote index address.

Differential Revision: https://reviews.llvm.org/D106796

Background-indexing is fine, because it uses GlobalCompilationDatabase
to fetch the compile commands (hence uses CommandMangler), and creates
invocation through buildCompilerInvocation.

Depends on D106639.

Differential Revision: https://reviews.llvm.org/D106669

It is not great to list diag ids by hand, but I don't see any other
solution unless diagnostics are annotated with these explicitly, which is a
bigger change in clang and I am not sure if would be worth it.

Diagnostics handled by this patch is by no means exhaustive, there might be
other checks that don't mention "unused"/"deprecated" in their names. But it
feels like this should be enough to catch common diagnostics and can be extended
over time.

Differential Revision: https://reviews.llvm.org/D107040

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D105201

This reverts commit e7b8ba10.

It broke 32-bit ARM - lldb-arm-ubuntu, reported by omjavaid:
  https://lab.llvm.org/buildbot/#/builders/17/builds/9595

For the nodes with reused scalars the user may be not only of the size
of the final shuffle but also of the size of the scalars themselves,
need to check for this. It is safe to just modify the check here, since
the order of the scalars themselves is preserved, only indeces of the
reused scalars are changed. So, the users with the same size as the
number of scalars in the node, will not be affected, they still will get
the operands in the required order.

Reported by @mstorsjo in D105020.

Differential Revision: https://reviews.llvm.org/D107080

If the instruction was previously deleted, it should not be treated as
an external user. This fixes cost estimation and removes dead
extractelement instructions.

Differential Revision: https://reviews.llvm.org/D107106

See https://github.com/clangd/clangd/issues/649#issuecomment-885903316.
Also disables config support in lit tests to make sure tests are not affected by
clangd config files lying around.

Differential Revision: https://reviews.llvm.org/D107130

Need to check that the minimum acceptable vector factor is at least 2,
not 0, to avoid compiler crash during gathered loads analysis.

Differential Revision: https://reviews.llvm.org/D107058

This introduces a builder function for emitting IR performing reductions in
OpenMP. Reduction variable privatization and initialization to the
reduction-neutral value is expected to be handled separately. The caller
provides the reduction functions. Further commits can provide implementation of
reduction functions for the reduction operators defined in the OpenMP
specification.

This implementation was tested on an MLIR fork targeting OpenMP from C and
produced correct executable code.

Reviewed By: Meinersbur

Differential Revision: https://reviews.llvm.org/D104928

This change makes sure that DwarfUnit does not load a .dwo file until
necessary. I also take advantage of DWARF 5's guarantee that the first
support file is also the primary file to make it possible to create
a compile unit without loading the .dwo file.

Review By: jankratochvil, dblaikie

Differential Revision: https://reviews.llvm.org/D100299

The test contains a race in memset.
The size of reported race depends on how the accessed
memory range split into granules inside of tsan runtime.
The test used to report access of size 8, because presumably
the buffer ended up being aligned to 8 bytes. But after
some unrelated changes this test started to report accesses
of size 1 (presumably .data layout changed), which makes
the test fail.
Guarantee alignment of the buf object explicitly.

Reviewed By: melver

Differential Revision: https://reviews.llvm.org/D107149

Make New<>() a variadic function template and forward any arguments to
the constructor. std::forward<>() is inlined to avoid including
<utility>.

Differential Revision: https://reviews.llvm.org/D107147

The "memory tag read" command will now tell you
when the allocation tag read does not match the logical
tag.

(lldb) memory tag read mte_buf+(8*16) mte_buf+(8*16)+48
Logical tag: 0x9
Allocation tags:
[0xfffff7ff7080, 0xfffff7ff7090): 0x8 (mismatch)
[0xfffff7ff7090, 0xfffff7ff70a0): 0x9
[0xfffff7ff70a0, 0xfffff7ff70b0): 0xa (mismatch)

The logical tag will be taken from the start address
so the end could have a different tag. You could for example
read from ptr_to_array_1 to ptr_to_array_2. Where the latter
is tagged differently to prevent buffer overflow.

The existing command will read 1 granule if you leave
off the end address. So you can also use it as a quick way
to check a single location.

(lldb) memory tag read mte_buf
Logical tag: 0x9
Allocation tags:
[0xfffff7ff7000, 0xfffff7ff7010): 0x0 (mismatch)

This avoids the need for a seperate "memory tag check" command.

Reviewed By: omjavaid

Differential Revision: https://reviews.llvm.org/D106880

The type field is a signed integer.
(https://sourceware.org/gdb/current/onlinedocs/gdb/General-Query-Packets.html)

However it's not packed in the packet in the way
you might think. For example the type -1 should be:
qMemTags:<addr>,<len>:ffffffff
Instead of:
qMemTags:<addr>,<len>:-1

This change makes lldb-server's parsing more strict
and adds more tests to check that we handle negative types
correctly in lldb and lldb-server.

We only support one tag type value at this point,
for AArch64 MTE, which is positive. So this doesn't change
any of those interactions. It just brings us in line with GDB.

Also check that the test target has MTE. Previously
we just checked that we were AArch64 with a toolchain
that supports MTE.

Finally, update the tag type check for QMemTags to use
the same conversion steps that qMemTags now does.
Using static_cast can invoke UB and though we do do a limit
check to avoid this, I think it's clearer with the new method.

Reviewed By: omjavaid

Differential Revision: https://reviews.llvm.org/D104914

The presence of AffineIfOp inside AffineFor prevents fusion of the other loops to happen. For example:

```
  affine.for %i0 = 0 to 10 {
    affine.store %cf7, %a[%i0] : memref<10xf32>
  }
  affine.for %i1 = 0 to 10 {
    %v0 = affine.load %a[%i1] : memref<10xf32>
    affine.store %v0, %b[%i1] : memref<10xf32>
  }
  affine.for %i2 = 0 to 10 {
    affine.if #set(%i2) {
      %v0 = affine.load %b[%i2] : memref<10xf32>
    }
  }
```

The first two loops were not be fused because of `affine.if` inside the last `affine.for`.

The issue seems to come from a conservative constraint that does not allow fusion if there are ops whose number of regions != 0 (affine.if is one of them).

This patch just removes such a constraint when`affine.if` is inside `affine.for`.  The existing `canFuseLoops` method is able to handle `affine.if` correctly.

Reviewed By: bondhugula, vinayaka-polymage

Differential Revision: https://reviews.llvm.org/D105963

We frequenty allocate sizeof(T) memory and call T ctor on that memory
(C++ new keyword effectively). Currently it's quite verbose and
usually takes 2 lines of code.
Add New<T>() helper that does it much more concisely.

Rename internal_free to Free that also sets the pointer to nullptr.
Shorter and safer.

Rename internal_alloc to Alloc, just shorter.

Reviewed By: vitalybuka, melver

Differential Revision: https://reviews.llvm.org/D107085

spirv::getElementPtr can return null (for memrefs with affine map) but patterns didn't handle this.

Differential Revision: https://reviews.llvm.org/D106988

There is a SIGSEGV at `DeduceTemplateArgumentsByTypeMatch`. The bug [#51171](https://bugs.llvm.org/show_bug.cgi?id=51171) was filled. The reproducer can be found at the bug description.

LIT test for the issue was added:
```
./bin/llvm-lit -v ../clang/test/SemaCXX/pr51171-crash.cpp
```

The debug stack trace is below:
```
 #0 0x00000000055afcb9 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:565:22
 #1 0x00000000055afd70 PrintStackTraceSignalHandler(void*) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:632:1
 #2 0x00000000055add2d llvm::sys::RunSignalHandlers() /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Signals.cpp:97:20
 #3 0x00000000055af701 SignalHandler(int) /home/ivanmurashko/local/llvm-project/llvm/lib/Support/Unix/Signals.inc:407:1
 #4 0x00007ffff7bc2b20 __restore_rt sigaction.c:0:0
 #5 0x00007ffff66a337f raise (/lib64/libc.so.6+0x3737f)
 #6 0x00007ffff668ddb5 abort (/lib64/libc.so.6+0x21db5)
 #7 0x00007ffff668dc89 _nl_load_domain.cold.0 loadmsgcat.c:0:0
 #8 0x00007ffff669ba76 .annobin___GI___assert_fail.end assert.c:0:0
 #9 0x000000000594b210 clang::QualType::getCommonPtr() const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/Type.h:684:5
#10 0x0000000005a12ca6 clang::QualType::getCanonicalType() const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/Type.h:6467:36
#11 0x0000000005a137a6 clang::ASTContext::getCanonicalType(clang::QualType) const /home/ivanmurashko/local/llvm-project/clang/include/clang/AST/ASTContext.h:2433:58
#12 0x0000000009204584 DeduceTemplateArgumentsByTypeMatch(clang::Sema&, clang::TemplateParameterList*, clang::QualType, clang::QualType, clang::sema::TemplateDeductionInfo&, llvm::SmallVectorImpl<clang::DeducedTemplateArgument>&, unsigned int, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:1355:54
#13 0x000000000920df0d clang::Sema::DeduceTemplateArguments(clang::FunctionTemplateDecl*, clang::TemplateArgumentListInfo*, clang::QualType, clang::FunctionDecl*&, clang::sema::TemplateDeductionInfo&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaTemplateDeduction.cpp:4354:47
#14 0x0000000009012b09 (anonymous namespace)::AddressOfFunctionResolver::AddMatchingTemplateFunction(clang::FunctionTemplateDecl*, clang::DeclAccessPair const&) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12026:38
#15 0x0000000009013030 (anonymous namespace)::AddressOfFunctionResolver::FindAllFunctionsThatMatchTargetTypeExactly() /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12119:9
#16 0x0000000009012679 (anonymous namespace)::AddressOfFunctionResolver::AddressOfFunctionResolver(clang::Sema&, clang::Expr*, clang::QualType const&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:11931:5
#17 0x0000000009013c91 clang::Sema::ResolveAddressOfOverloadedFunction(clang::Expr*, clang::QualType, bool, clang::DeclAccessPair&, bool*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:12286:42
#18 0x0000000008fed85d IsStandardConversion(clang::Sema&, clang::Expr*, clang::QualType, bool, clang::StandardConversionSequence&, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:1712:49
#19 0x0000000008fec8ea TryImplicitConversion(clang::Sema&, clang::Expr*, clang::QualType, bool, clang::Sema::AllowedExplicit, bool, bool, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:1433:27
#20 0x0000000008ff90ba TryCopyInitialization(clang::Sema&, clang::Expr*, clang::QualType, bool, bool, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:5273:71
#21 0x00000000090024fb clang::Sema::AddBuiltinCandidate(clang::QualType*, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&, bool, unsigned int) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:7755:32
#22 0x000000000900513f (anonymous namespace)::BuiltinOperatorOverloadBuilder::addGenericBinaryArithmeticOverloads() /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:8633:30
#23 0x0000000009007624 clang::Sema::AddBuiltinOperatorCandidates(clang::OverloadedOperatorKind, clang::SourceLocation, llvm::ArrayRef<clang::Expr*>, clang::OverloadCandidateSet&) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:9205:51
#24 0x0000000009018734 clang::Sema::LookupOverloadedBinOp(clang::OverloadCandidateSet&, clang::OverloadedOperatorKind, clang::UnresolvedSetImpl const&, llvm::ArrayRef<clang::Expr*>, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:13469:1
#25 0x0000000009018d56 clang::Sema::CreateOverloadedBinOp(clang::SourceLocation, clang::BinaryOperatorKind, clang::UnresolvedSetImpl const&, clang::Expr*, clang::Expr*, bool, bool, clang::FunctionDecl*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaOverload.cpp:13568:24
#26 0x0000000008b24797 BuildOverloadedBinOp(clang::Sema&, clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14606:65
#27 0x0000000008b24ed5 clang::Sema::BuildBinOp(clang::Scope*, clang::SourceLocation, clang::BinaryOperatorKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14691:73
#28 0x0000000008b245d4 clang::Sema::ActOnBinOp(clang::Scope*, clang::SourceLocation, clang::tok::TokenKind, clang::Expr*, clang::Expr*) /home/ivanmurashko/local/llvm-project/clang/lib/Sema/SemaExpr.cpp:14566:1
#29 0x00000000085bfafb clang::Parser::ParseRHSOfBinaryExpression(clang::ActionResult<clang::Expr*, true>, clang::prec::Level) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:630:71
#30 0x00000000085bd922 clang::Parser::ParseAssignmentExpression(clang::Parser::TypeCastState) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:177:1
#31 0x00000000085cbbcd clang::Parser::ParseExpressionList(llvm::SmallVectorImpl<clang::Expr*>&, llvm::SmallVectorImpl<clang::SourceLocation>&, llvm::function_ref<void ()>) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseExpr.cpp:3368:40
#32 0x000000000857f49c clang::Parser::ParseDeclarationAfterDeclaratorAndAttributes(clang::Declarator&, clang::Parser::ParsedTemplateInfo const&, clang::Parser::ForRangeInit*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseDecl.cpp:2416:5
#33 0x000000000857df16 clang::Parser::ParseDeclGroup(clang::ParsingDeclSpec&, clang::DeclaratorContext, clang::SourceLocation*, clang::Parser::ForRangeInit*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseDecl.cpp:2092:65
#34 0x000000000855f07b clang::Parser::ParseDeclOrFunctionDefInternal(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec&, clang::AccessSpecifier) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:1138:1
#35 0x000000000855f136 clang::Parser::ParseDeclarationOrFunctionDefinition(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*, clang::AccessSpecifier) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:1153:57
#36 0x000000000855e644 clang::Parser::ParseExternalDeclaration(clang::ParsedAttributesWithRange&, clang::ParsingDeclSpec*) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:975:58
#37 0x000000000855d717 clang::Parser::ParseTopLevelDecl(clang::OpaquePtr<clang::DeclGroupRef>&, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/Parser.cpp:720:42
#38 0x0000000008558e01 clang::ParseAST(clang::Sema&, bool, bool) /home/ivanmurashko/local/llvm-project/clang/lib/Parse/ParseAST.cpp:158:37
#39 0x000000000627a221 clang::ASTFrontendAction::ExecuteAction() /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/FrontendAction.cpp:1058:11
#40 0x0000000006bdcc31 clang::CodeGenAction::ExecuteAction() /home/ivanmurashko/local/llvm-project/clang/lib/CodeGen/CodeGenAction.cpp:1045:5
#41 0x0000000006279b4d clang::FrontendAction::Execute() /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/FrontendAction.cpp:955:38
#42 0x00000000061c3fe9 clang::CompilerInstance::ExecuteAction(clang::FrontendAction&) /home/ivanmurashko/local/llvm-project/clang/lib/Frontend/CompilerInstance.cpp:974:42
#43 0x00000000063f9c5e clang::ExecuteCompilerInvocation(clang::CompilerInstance*) /home/ivanmurashko/local/llvm-project/clang/lib/FrontendTool/ExecuteCompilerInvocation.cpp:278:38
#44 0x0000000002603a03 cc1_main(llvm::ArrayRef<char const*>, char const*, void*) /home/ivanmurashko/local/llvm-project/clang/tools/driver/cc1_main.cpp:246:40
#45 0x00000000025f8a39 ExecuteCC1Tool(llvm::SmallVectorImpl<char const*>&) /home/ivanmurashko/local/llvm-project/clang/tools/driver/driver.cpp:338:20
#46 0x00000000025f9107 main /home/ivanmurashko/local/llvm-project/clang/tools/driver/driver.cpp:415:26
#47 0x00007ffff668f493 __libc_start_main (/lib64/libc.so.6+0x23493)
#48 0x00000000025f729e _start (/data/users/ivanmurashko/llvm-project/build/bin/clang-13+0x25f729e)
```

Reviewed By: erichkeane

Differential Revision: https://reviews.llvm.org/D106583

The updated lots_of_threads.c test with 300 threads
started running for too long on machines with low
hardware parallelism (e.g. taskset -c 0-1).
On lots of CPUs it finishes in ~2 secs. But with
taskset -c 0-1 it runs for hundreds of seconds
effectively spinning in the barrier in the sleep loop.

We now have the handy futex API in sanitizer_common.
Use it instead of the passive spin loop.
It makes the test run only faster with taskset -c 0-1,
it runs for ~1.5 secs, while with full parallelism
it still runs for ~2 secs (but consumes less CPU time).

Depends on D107131.

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D107132

The test contains a race in read/write syscalls.
The size of reported race depends on how the accessed
memory range split into granules inside of tsan runtime.
The test used to report access of size 8, because presumably
the buffer ended up being aligned to 8 bytes. But after
some unrelated changes this test started to report accesses
of size 1 (presumably .data layout changed), which makes
the test fail.
Guarantee alignment of the buf object explicitly.

Reviewed By: vitalybuka, melver

Differential Revision: https://reviews.llvm.org/D107131

Under MVE we can use VADDV/VADDVA's to perform integer add reductions,
so it can be beneficial to use more reductions than summing subvectors
and reducing once. Especially for VMLAV/VMLAVA the mul can be
incorporated into the reduction, producing less instructions.

Some of the test cases currently get larger due to extra integer adds,
but will be improved in a followup patch.

Differential Revision: https://reviews.llvm.org/D106531

These are generated from SLP vectorization, for example
https://godbolt.org/z/ebxdPh1Kz. These backend tests
show cases that we can produce better code for.

This reverts commit fed25ddc.

There has been sporadic failures in LLDB AArch64/Arm 32 buildbots since
this commit. I am temporarily reverting it see if it fixes the issue.

Differential Revision: https://reviews.llvm.org/D100243

Renamed language standard from openclcpp to openclcpp10.
Added new std values i.e. '-cl-std=clc++1.0' and
'-cl-std=CLC++1.0'.

Patch by Topotuna (Justas Janickas)!

Differential Revision: https://reviews.llvm.org/D106266

Remove erroneous `||` at the end of an `if` condition. This was
introduced in https://reviews.llvm.org/D106871.

The Scalable Matrix Extension (SME) introduces a new execution mode
called Streaming SVE mode. In streaming mode a substantial subset of the
SVE and SVE2 instruction set is available, along with new outer product,
load, store, extract and insert instructions that operate on the new
architectural register state for the matrix.

To support streaming mode this patch introduces a new subtarget feature
+streaming-sve. If enabled, the subset of SVE(2) instructions are
available. The existing behaviour for SVE(2) remains unchanged, the
subset of instructions that are legal in streaming mode are enabled if
either +sve[2] or +streaming-sve is specified. Instructions that are
illegal in streaming mode remain predicated on +sve[2].

The SME target feature has been updated to imply +streaming-sve rather
than +sve.

The following changes are made to the SVE(2) tests:
  * For instructions that are legal in streaming mode:
    - added RUN line to verify +streaming-sve enables the instruction.
    - updated diagnostic to 'instruction requires: streaming-sve or sve'.
  * For instructions that are illegal in streaming-mode:
    - added RUN line to verify +streaming-sve does not enable the
      instruction.

SVE(2) instructions that are legal in streaming mode have:

  if !HaveSVE[2]() && !HaveSME() then UNDEFINED;

at the top of the pseudocode in the XML.

The reference can be found here:
https://developer.arm.com/documentation/ddi0602/2021-06/SVE-Instructions

Reviewed By: sdesmalen, david-arm

Differential Revision: https://reviews.llvm.org/D106272

This saves a level of manual table lookup for those of us who don't remember
ELF relocation numbers off the top of our heads.

Pulled out the OptimizationLevel class from PassBuilder in order to be able to access it from within the PassManager and avoid include conflicts.

Reviewed By: mtrofin

Differential Revision: https://reviews.llvm.org/D107025