Reviewed By: majnemer

Differential Revision: https://reviews.llvm.org/D109988

When adding alias.scope and noalias metadata to a memcpy function,
the alias.scope and noalias metadata from the operands are merged.
The rule for merging alias.scope is to take the intersection of
the domains and the union of the scopes within those domains.
The rule for merging noalias is to take the intersection.

The bug is that AMDGPULowerModuleLDS was using concatenation for
both alias.scope and noalias. For example, when f1 and f2 are added
to the LDS structure and there is a memcpy(f2, f1, sizeof(f1)).
Then, concatenation creates noalias metadata for the memcpy that
includes both {f1, f2}. That means that the memcpy is assumed
not to alias a prior load of f2, which enables the optimizer to
remove a load of f2 that occurs after mempcy.

The function MDNode::getmostGenericAliasScope defines the semantics
for alias.scope. There is a function, combineMetadata in Local.cpp,
that uses intersect for noalias.

Differential Revision: https://reviews.llvm.org/D110049

This helps the compiler generate better code.

Fixes pr42770

Differential Revision: https://reviews.llvm.org/D108772

Parallel regions are outlined as functions with capture variables explicitly generated as distinct parameters in the function's argument list. That complicates the fork_call interface in the OpenMP runtime: (1) the fork_call is variadic since there is a variable number of arguments to forward to the outlined function, (2) wrapping/unwrapping arguments happens in the OpenMP runtime, which is sub-optimal, has been a source of ABI bugs, and has a hardcoded limit (16) in the number of arguments, (3)  forwarded arguments must cast to pointer types, which complicates debugging. This patch avoids those issues by aggregating captured arguments in a struct to pass to the fork_call.

Reviewed By: jdoerfert, jhuber6

Differential Revision: https://reviews.llvm.org/D102107

This patch adds a prefixed load pattern involving v2f32 fpext v2f64, where we
are dealing with a value with an offset that fits into a 34-bit signed immediate.
A reduced test case is also added to patch that tests the pattern, in which the
pattern is tested in the big endian CHECKs of the newly added test.

Differential Revision: https://reviews.llvm.org/D109887

This patch fixes the crash found by PR51614:
whenever doing tail folding, interleave groups must be considered under mask.

Another fix D108900 follows for targets that support masked loads and stores:
when *deciding* to vectorize with masked interleave groups, check if the access
is reverse - which is currently not supported; rather than (only) asserting when
computing cost and generating code.

Differential Revision: https://reviews.llvm.org/D108891

This requires a minor change to CodeGenPrepare to ensure that
shouldSinkOperands will be called for And.

Reviewed By: frasercrmck

Differential Revision: https://reviews.llvm.org/D110106

Trying to use the DIA SDK reader only to fail with "DIA SDK wasn't enabled"
isn't very useful. The native PDB reader is missing some stuff, but it's still
better than nothing.

Reduces number of lldb-check-shell test failures with LLVM_ENABLE_DIA_SDK=NO
from 27 to 15.

Differential Revision: https://reviews.llvm.org/D110172

This implements the generic std.format.spec framework for all types.

The Unicode support will be added in a separate patch.

Implements parts of:
- P0645 Text Formatting

Completes:
- LWG-3242 std::format: missing rules for arg-id in width and precision
- P1892 Extended locale-specific presentation specifiers for std::format

Reviewed By: #libc, ldionne, vitaut

Differential Revision: https://reviews.llvm.org/D103368

This reverts commit 63e0d038.

It causes test failures:

http://lab.llvm.org:8011/#/builders/119/builds/5612
https://logs.chromium.org/logs/fuchsia/buildbucket/cr-buildbucket/8835548361443044001/+/u/clang/test/stdout

We already have pow(x, y) * pow(x, z) -> pow(x, y + z) transformation, but we are missing same transformation for powi (power is integer).

Requires reassoc.

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D109954

This patch changes the signature of the load and store vector pair
builtins to match their documentation. The type of the `signed long long`
argument is changed to `signed long`. This patch also changes existing testcases
to match the signature change.

Reviewed By: lei, Conanap

Differential Revision: https://reviews.llvm.org/D109996

Planning to reframe a proposed transform in terms of
demanded bits as suggested in D110170.
The new tests end with an 'or'.

The current code writes the pc-table at the process startup,
which may happen before the common_flags() are initialized.
Move writing to the process end.
This is consistent with how we write the counters and avoids the problem with the uninitalized flags.
Add prints if verbosity>=1.

Reviewed By: kostik

Differential Revision: https://reviews.llvm.org/D110119

isValidAssumeForContext can provide better results with access to the
dominator tree in some cases. This patch adjusts computeConstantRange to
allow passing through a dominator tree.

The use VectorCombine is updated to pass through the DT to enable
additional scalarization.

Note that similar APIs like computeKnownBits already accept optional dominator
tree arguments.

Reviewed By: lebedev.ri

Differential Revision: https://reviews.llvm.org/D110175

Reviewed By: jeroen.dobbelaere

Differential Revision: https://reviews.llvm.org/D102821

When using instructions which have a MetadataAsValue argument
(e.g. some target-specific intrinsics) MD canonicalization strips
internal MDNodes with a single ConstantAsMetadata child. That
prevented IRTranslator from the proper translation of such a calls.

Compute the tiled producer slice dimensions directly starting from the consumer not using the producer at all.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D110147

Add a helper method to check if an index vector contains a permutation of its indices. Additionally, refactor applyPermutationToVector to take int64_t.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D110135

Differential Revision: https://reviews.llvm.org/D109616

Strip a layer of parentheses in TreeTransform::RebuildQualifiedType.

Differential Revision: https://reviews.llvm.org/D108359

It was previously assumed that tensor.insert_slice should be bufferized first in a greedy fashion to avoid out-of-place bufferization of the large tensor. This heuristic does not hold upon further inspection.

This CL removes the special handling of such ops and adds a test that exhibits better behavior and appears in real use cases.

The only test adversely affected is an artificial test which results in a returned memref: this pattern is not allowed by comprehensive bufferization in real scenarios anyway and the offending test is deleted.

Differential Revision: https://reviews.llvm.org/D110072

Previously, comprehensive bufferize would consider all aliasing reads and writes to
the result buffer and matching operand. This resulted in spurious dependences
being considered and resulted in too many unnecessary copies.

Instead, this revision revisits the gathering of read and write alias sets.
This results in fewer alloc and copies.
An exhaustive test cases is added that considers all possible permutations of
`matmul(extract_slice(fill), extract_slice(fill), ...)`.

Assert the tile loop nest invariants are satisfied instead of failing silently.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D110137

This patch replaces reliance on `goto failure` pattern with
`llvm::scope_exit`.

Reviewed By: bkramer

Differential Revision: https://reviews.llvm.org/D109865

Optimize (add (mul x, c0), c1) -> (ADDI (MUL (ADDI, c1/c0), c0), c1%c0),
if c1/c0 and c1%c0 are simm12, while c1 is not.

Optimize (add (mul x, c0), c1) -> (MUL (ADDI, c1/c0), c0),
if c1%c0 is zero, and c1/c0 is simm12 while c1 is not.

Reviewed By: craig.topper

Differential Revision: https://reviews.llvm.org/D108607

Helper function `getDefaultOpenCLPointeeAddrSpace()` introduced to
`ASTContext` class. It returns default OpenCL address space
depending on language version and enabled features. If generic
address space is supported, the helper function returns value
`LangAS::opencl_generic`. Otherwise, value `LangAS::opencl_private`
is returned. Code refactoring changes performed in several suitable
places.

Differential Revision: https://reviews.llvm.org/D109874

This patch allows sinking an instruction which can have multiple uses in a
single user. We were previously over-restrictive by looking for exactly one use,
rather than one user.

Also added an API for retrieving a unique undroppable user.

Reviewed By: nikic

Differential Revision: https://reviews.llvm.org/D109700

Add documentation of unbundling of heterogeneous device archives to
create device specific archives, as introduced by D93525. Also, add
documentation for supported text file formats.

Reviewed By: yaxunl

Differential Revision: https://reviews.llvm.org/D110083

The updated list is based on the output of
cmake -G Ninja -S llvm -B build -DLLVM_ENABLE_PROJECTS='foo'.

Differential Revision: https://reviews.llvm.org/D110124

Differential Revision: https://reviews.llvm.org/D109614

One of the two inputs of the Shufflevector is often a placeholder.
Previously, there were cases where the placeholder was undef, and there were cases where it was poison.
I added these constructors to create a placeholder consistently.

Changing to use the newly added constructor will be written in a separate patch.

Reviewed By: spatel

Differential Revision: https://reviews.llvm.org/D110146