C identifier name input sections such as __llvm_prf_* are GC roots so
they cannot be discarded. In LLD, the SHF_LINK_ORDER flag overrides the
C identifier name semantics.

The !associated metadata may be attached to a global object declaration
with a single argument that references another global object, and it
gets lowered to SHF_LINK_ORDER flag. When a function symbol is discarded
by the linker, setting up !associated metadata allows linker to discard
counters, data and values associated with that function symbol.

Note that !associated metadata is only supported by ELF, it does not have
any effect on non-ELF targets.

Differential Revision: https://reviews.llvm.org/D76802

This is consistent with BFD objcopy.

Previously llvm objcopy would allocate space for SHT_NOBITS sections
often resulting in enormous binary files.

New test case (binary-paddr.test %t6).

Reviewed By: jhenderson, MaskRay

Differential Revision: https://reviews.llvm.org/D95569

Differential Revision: https://reviews.llvm.org/D95733

Fixing up a couple places where `getCallSiteIdentifier` is needed to support pseudo-probe-based callsites.

Also fixing an issue in the extbinary profile reader where the metadata section is not fully scanned based on the number of profiles loaded only for the current module.

Reviewed By: wmi, wenlei

Differential Revision: https://reviews.llvm.org/D95791

Differential Revision: https://reviews.llvm.org/D92257

Support OpImageType in SPIRV Dialect.

This change doesn't support operand AccessQualifier since
it is optinal and only enables under Kernel capability.

co-authored-by: Alan Liu <alanliu.yf@gmail.com>

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D95580

The main point of committing this early is to have a negative test in tree.  Nothing fails in the current tests if we implement this (currently unsound) optimization.

This is another step (see D95452) towards correcting fast-math-flags
bugs in vector reductions.

There are multiple bugs visible in the test diffs, and this is still
not working as it should. We still use function attributes (rather
than FMF) to drive part of the logic, but we are not checking for
the correct FP function attributes.

Note that FMF may not be propagated optimally on selects (example
in https://llvm.org/PR35607 ). That's why I'm proposing to union the
FMF of a fcmp+select pair and avoid regressions on existing vectorizer
tests.

Differential Revision: https://reviews.llvm.org/D95690

This reverts commit 35a57f39.

A build is broken during clang bootstrap with:

In file included from ../libcxx/src/format.cpp:9:
/tmp/ci-nGNyLRM9V3/include/c++/v1/format:153:16: error: no member named 'is_constant_evaluated' in namespace 'std::__1'
    if (_VSTD::is_constant_evaluated() && __id >= __num_args_)
        ~~~~~~~^
1 error generated.

Differential Revision: https://reviews.llvm.org/D95770

A == B map to A >= B && A <= B
(https://alive2.llvm.org/ce/z/_dwxKn).

This extends the constraint construction to return a list of
constraints, which can be used to properly de-compose nested AND & OR.

This reverts commit 21f14621.

Support OpImageType in SPIRV Dialect.

This change doesn't support operand AccessQualifier since
it is optinal and only enables under Kernel capability.

co-authored-by: Alan Liu <alanliu.yf@gmail.com>

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D95580

The change includes OMP_NUM_TEAMS, OMP_TEAMS_THREAD_LIMIT env variables,
omp_set_num_teams, omp_get_max_teams, omp_set_teams_thread_limit,
omp_get_teams_thread_limit routines.

Differential Revision: https://reviews.llvm.org/D95003

This is a (rather delayed) follow up to commit 0129cd50.  This commit is entirely NFC, the semantic change to leverage the new information will be submitted separate with a test case.

This is the last revision to migrate using SimplePadOp to PadTensorOp, and the
SimplePadOp is removed in the patch. Update a bit in SliceAnalysis because the
PadTensorOp takes a region different from SimplePadOp. This is not covered by
LinalgOp because it is not a structured op.

Also, remove a duplicated comment from cpp file, which is already described in a
header file. And update the pseudo-mlir in the comment.

This is as same as D95615 but fixing one dep in CMakeLists.txt

Different from D95671, the fix was applied to run target.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D95785

As defined in the spec:
https://github.com/WebAssembly/memory64/blob/master/proposals/memory64/Overview.md

Differential Revision: https://reviews.llvm.org/D95651

If the incoming block to a phi node is an EH pad, then we will
materialize into an EH pad, which is not supposed to happen. To fix
this, I added a check to see if incoming block of a phi node is an EH
pad before using it as the insertion point.

Differential Revision: https://reviews.llvm.org/D95019

Implements parts of:
- P0645 Text Formatting

Depends on D92214

Reviewed By: ldionne, curdeius, #libc

Differential Revision: https://reviews.llvm.org/D93166

Fuchsia's zxtest has a slightly different death test definition, and
this macro makes our death test API work on Fuchsia.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D95648

Given a shuffle(vqdmulh(shuffle, shuffle), we can flatter the shuffles
out if they become an identity mask. This can come up during lane
interleaving, when we do that better.

Differential Revision: https://reviews.llvm.org/D94034

Some benchmarks regress with non-trivial unswitching, so add an option
to opt-out of performing non-trivial unswitching while investigating.

Reviewed By: asbirlea

Differential Revision: https://reviews.llvm.org/D95796

This is consistent with the VEX version. It also fixes a sorting
issue in the matching table that caused the EVEX version to be
prioritized over VEX in intel syntax.

Fixes issue [2] from PR48991.

This patch fixes elfabi tests on machines using a GMT+X timezone
settings.

Differential Revision: https://reviews.llvm.org/D95641

Reviewed By: rnk

Differential Revision: https://reviews.llvm.org/D95482

The constant trunc/ext may not be the optimal pre-condition,
but I think that handles the common cases.

Example of Alive2 proof:
https://alive2.llvm.org/ce/z/sREeLC

This is another step towards canonicalizing to the intrinsics.
Narrowing was identified as source of potential regression for
abs(), so we need to handle this for min/max - see:
https://llvm.org/PR48816

If this is not enough, we could process intrinsics in
the trunc-driven matching in canEvaluateTruncated().

Some libcs define non-standard FE_* macros and include them in
FE_ALL_EXCEPT. This change adjusts the fenv tests so that the
non-standard FE_* macros do not interfere when compiled with
fenv.h from another libc.

Reviewed By: sivachandra

Differential Revision: https://reviews.llvm.org/D95650

Differential Revision: https://reviews.llvm.org/D95660

This patch is a follow up to D94821 to ensure the correct behavior of the
general directive structure checker.
This patch add the generation of the Enter function declaration for clauses in
the TableGen backend.
This helps to ensure each clauses declared in the TableGen file has at least
a basic check.

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D95108

[X86][SSE] LowerScalarImmediateShift - use APInt::getLowBitsSet for vXi8 ISD::SRL mask generation. NFCI.

Match what we do for ISD::SHL

FileCheck is required for OpenMP tests. The current detection can fail
if building OpenMP in-tree when user sets `LLVM_INSTALL_TOOLCHAIN_ONLY=ON`. As a
result, CMake will raise an error and the compilation will be broken. This patch
fixed the issue. When `FileCheck` is not a target, tests will just be skipped.

Reviewed By: jdoerfert, JonChesterfield

Differential Revision: https://reviews.llvm.org/D95689

Implements:
- LWG3149 DefaultConstructible should require default initialization

Implements parts of:
 - P0898R3 Standard Library Concepts
 - P1754 Rename concepts to standard_case for C++20, while we still can

Depends on D91986

Reviewed By: ldionne, #libc

Differential Revision: https://reviews.llvm.org/D93461

When we have a zeroext parameter, emit G_ASSERT_ZEXT.

Add a check that we actually emit it.

This is a 0.1% code size win on CTMark/7zip and CTMark/consumer-typeset at -Os.

Differential Revision: https://reviews.llvm.org/D95567

Part of the gold test added in 1487747e
relies on more recent fixes to gold that fix the plugin behavior with
--export-dynamic-symbol and --dynamic-list. Extract those parts of the
new test into a v1.16 test.

A follow up patch will add support for commuting operands or
changing opcode to vfmacc and friends.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D95662

When replacing the dst reg with the src reg, we need to make sure that we
propagate the dst reg's register class through to the src.

Otherwise, we aren't meeting the requirements for G_ASSERT_ZEXT, and so the
verifier will fail.

Differential Revision: https://reviews.llvm.org/D95708