This test was originally unsupported for `LIBCXX-AIX-FIXME` feature because we lacked `-fvisibility=hidden` support. AIX now has visibility support and the test passes in debug mode.

Reviewed By: #libc, Mordante

Differential Revision: https://reviews.llvm.org/D149255

When running bcc tool execsnoop ([1]) which is built with latest llvm,
I hit the following error:
  $ sudo ./execsnoop.py
  /virtual/main.c:99:157: error: expected ')'
    data.ppid = ({ typeof(pid_t) _val; __builtin_memset(&_val, 0, sizeof(_val)); bpf_probe_read(&_val, sizeof(_val),
       (void *)&({ typeof(struct task_struct  btf_type_tag(rcu)*) _val; __builtin_memset(&_val, 0, sizeof(_val));
                                              ^
        bpf_probe_read(&_val, sizeof(_val), (void *)&task->real_parent); _val; })->tgid); _val; });

The failure reason is due to that the bcc rewriter printed type like
  struct task_struct  btf_type_tag(rcu)*
where the compiler cannot recognize what 'btf_type_tag(rcu)' is.

The above type is printed in [2] by UnaryOperator->getType().getAsString() (from clang)
in function ProbeVisitor::VisitUnaryOperator.

The original source type looks like ([3])
  struct task_struct {
    ...
    struct task_struct __rcu	*real_parent;
    ...
  }
  where '__rcu' is a macro expanding to '__attribute__((btf_type_tag("rcu")))'.

Let us print btf_type_tag properly in clang so bcc tools and broader type printing
will work properly.

With this patch, the above rewrited source code looks like
    data.ppid = ({ typeof(pid_t) _val; __builtin_memset(&_val, 0, sizeof(_val)); bpf_probe_read(&_val, sizeof(_val),
       (void *)&({ typeof(struct task_struct  __attribute__((btf_type_tag("rcu")))*) _val; __builtin_memset(&_val, 0, sizeof(_val));
        bpf_probe_read(&_val, sizeof(_val), (void *)&task->real_parent); _val; })->tgid); _val; });

and execsnoop.py tool can run properly.

  [1] https://github.com/iovisor/bcc/blob/master/tools/exitsnoop.py
  [2] https://github.com/iovisor/bcc/blob/master/src/cc/frontends/clang/b_frontend_action.cc
  [3] https://github.com/torvalds/linux/blob/master/include/linux/sched.h

Differential Revision: https://reviews.llvm.org/D150017

Share with AVX512 to reduce duplication

Fixes #62462

Reviewed By: #clang-language-wg, erichkeane

Differential Revision: https://reviews.llvm.org/D150036

In the SimplifyDemandedBits function, there is a fallthrough to the
default case in the case of ISD::ADD, ISD::MUL and ISD::SUB. This
leads to a call to computeKnownBits which is unnecessary as the
calls to SimplifyDemandedBits in the cases themselves handle the
calculation of the known bits. This information is discarded through
the Known2 variables.

By keeping this information around and calling
KnownBits::mul or KnownBits::computeForAddSub directly, the
unnecessary computation can be avoided. For now, the NSW bit is not
passed through to KnownBits as this is something that
computeKnownBits does not handle either. This requires updating
computeForAddCarry to handle the flag as well.

Differential Revision: https://reviews.llvm.org/D150110

Implements part of P1614R2 "The Mothership has Landed"

Reviewed By: Mordante, #libc, philnik

Differential Revision: https://reviews.llvm.org/D132265

These were recently deprecated in https://reviews.llvm.org/D149464.

Reviewed By: ymandel, gribozavr2, xazax.hun

Differential Revision: https://reviews.llvm.org/D149869

Don't choke on `outs` arguments that are not produced by `tensor.empty` or
`tensor.extract_slice`.

When the `outs` argument has a static shape we have all the necessary
information to proceed with the padding.

This makes the `transform.structured.pad` a little bit more resilient.

Differential Revision: https://reviews.llvm.org/D150112

The commit causes build bot failures due to a missing dependencies:
https://buildkite.com/llvm-project/llvm-main/builds/7036#0187fb40-e4b6-4471-a2a0-2820b71c727b

This reverts commit 91cff8a7.

This change fixes static code analysis errors

Reviewed By: skan

Differential Revision: https://reviews.llvm.org/D149506

Currently `CallOpInterface` has a method `getCallableForCallee` to have a consistent way to get the callee from an operation with `CallOpInterface`, but missing a consistent way to set a callee for an operation with `CallOpInterface`.

A set callee method is useful for transformations that operate on `CallOpInterface`, and change the callee, e.g., a pass that specialize function, which clone the callee, and change the `CallOpInterface`'s callee to the cloned version. Without such method, transformation would need to understand the implementation for every operations with `CallOpInterface`, and have a type switch to handle them.

This review adds a method to set callee for operation with `CallOpInterface`.

Reviewed By: gysit, zero9178o

Differential Revision: https://reviews.llvm.org/D149763

This patch refactors the Mem2Reg infrastructure. It decouples
analysis from promotion, allowing for more control over the execution of
the logic. It also adjusts the interfaces to be less coupled to mem2reg
and more general. This will be useful for an upcoming revision
introducing generic SROA.

Reviewed By: gysit

Differential Revision: https://reviews.llvm.org/D149825

Was incorrectly marked as DenseIntElementsAttr (only used for
SparseElementsAttr).

This mechanism has never been intended for anything but prototyping.

This is part of an on-going migration to adopt Properties inside MLIR.

Differential Revision: https://reviews.llvm.org/D148300

This reverts commit 5326c9e4.

The problem that caused the revert was downstream
(missing dep in user of clang).

In DIEValue's operator assignment constructor, it didn't identify if
the two obj is the same.
I add code to identify them so that it will work correctly when we do
self assign here.

Reviewed By: skan

Differential Revision: https://reviews.llvm.org/D150020

Clang has mechanism to specify required target features of a built-in
function. This patch adds such definitions to Altivec, VSX, HTM,
PairedVec and MMA builtins.

This will help frontend to detect incompatible target features of
bulitin when using target attribute syntax.

Reviewed By: nemanjai, kamaub

Differential Revision: https://reviews.llvm.org/D143467

Non-incremental Clang can also exit with the WeakRefReferences not empty upon
such example. This patch makes clang-repl consistent to what Clang does.

Differential revision: https://reviews.llvm.org/D148435

R_RISCV_CALL has been deprecated. [1] Both GCC and LLVM seem to not
generate it anymore and always use R_RISCV_CALL_PLT (even for calls that
do not need a PLT entry). Generating PLT entries based on relocation
type is not recommended and a better heuristic is to only generate them
when the target symbol is preemptable [2]. This patch implements this by
only generating PLT entries for undefined symbols.

[1] https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/340
[2] https://github.com/riscv-non-isa/riscv-elf-psabi-doc/issues/98

Reviewed By: lhames

Differential Revision: https://reviews.llvm.org/D149525

Commit b4563ee1 enabled propagation for
pack and unpack through non-elementwise operations, update comments and
methods names to reflect the changes made.

Rework some tests where the `linalg.generic` was reading from
`tensor.empty`, which is undefined behaviour.

Reviewed By: hanchung, qedawkins

Differential Revision: https://reviews.llvm.org/D149952

Try to reland D42600

Differential Revision: https://reviews.llvm.org/D42600

Now we can fix sanitizers for the test one by one.

This parameter was already a no-op, so removing it doesn't change behavior.

Depends On D149144

Reviewed By: ymandel, xazax.hun, gribozavr2

Differential Revision: https://reviews.llvm.org/D149151

It was discovered that this pass could be slow on huge functions, meaning 20%
compile time instead of the usual ~0.5% (with a test case spending ~19 mins
just in the backend).

The problem related to the necessary clearing of earlier kill flags when a
redundant instruction is removed. With this patch, the handling of kill flags
is now done by maintaining a map instead of scanning backwards in the
function. This remedies the compile time on the huge file fully.

Reviewed By: vpykhtin, arsenm

Differential Revision: https://reviews.llvm.org/D147532

Resolves https://github.com/llvm/llvm-project/issues/61397

Autogenerating tests as suggested in D42600

This patch add the instructions of zcmp extension.

Instructions in zcmp extension try to optimise `mv` inst and the prologue & epilogue in functions

co-author: @Scott Egerton, @ZirconLiu, @Lukacma, @Heda Chen, @luxufan, @heyiliang, @liaochunyu

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D132819

The generic cast to `BinaryOperator` can break if `V` is not a
`BinaryOperator` (i.e a `ConstantExpr`). This occurs in things like
PPC linux build.

This reverts commit fe733f54.

1. Share code `optimizeInstFromVEX3ToVEX2` with MCInstLower
2. Move the code of optimization for shift/rotate to a separate file

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D150068