This commit adds functionality needed for implementation of convolutions with
linalg.generic op. Since linalg.generic right now expects indexing maps to be
just permutations, offset indexing needed in convolutions is not possible.
Therefore in this commit we address the issue by adding support for symbols inside
indexing maps which enables more advanced indexing. The upcoming commit will
solve the problem of computing loop bounds from such maps.

Differential Revision: https://reviews.llvm.org/D83158

Differential Revision: https://reviews.llvm.org/D84156

Differential Revision: https://reviews.llvm.org/D84155

Fold `shape.shape_eq`.

Differential Revision: https://reviews.llvm.org/D82533

This revision improves and makes better use of OpInterfaces for the Vector dialect.

Differential Revision: https://reviews.llvm.org/D84053

Linkage support is already present in the LLVM dialect, and is being translated
for globals other than functions. Translation support has been missing for
functions because their conversion goes through a different code path than
other globals.

Differential Revision: https://reviews.llvm.org/D84149

This patch adds documentation for SPIR-V to LLVM conversion. It describes
the approaches taken and what is currently supported by this conversion
framework.

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D83322

This affects the rendering on the website.

Add lowering conversion from affine.parallel to scf.parallel.

Differential Revision: https://reviews.llvm.org/D83239

Summary: The logic was conservative but inverted: cases that should remain unmasked became 1-D masked.

Differential Revision: https://reviews.llvm.org/D84051

Summary: Vector contract patterns were only parameterized by a `vectorTransformsOptions`. As a result, even if an mlir file was containing several occurrences of `vector.contract`, all of them would be lowered in the same way. More granularity might be required . This Diff adds a `constraint` argument to each of these patterns which allows the user to specify with more precision on which `vector.contract` should each of the lowering apply.

Differential Revision: https://reviews.llvm.org/D83960

When the IfOp returns values, it can easily be obtained from one of the Values.
However, when no values are returned, the information is lost.
This revision lets the caller specify a capture IfOp* to return the produced
IfOp.

Differential Revision: https://reviews.llvm.org/D84025

Differential Revision: https://reviews.llvm.org/D83982

- Added more default values for `attributes` parameter for 2 more build methods
- Extend the op-decls.td unit test to test these build methods.

Differential Revision: https://reviews.llvm.org/D83839

- This will enable tweaking IR printing options when enabling printing (for ex,
  tweak elideLargeElementsAttrs to create smaller IR logs)

Differential Revision: https://reviews.llvm.org/D83930

Lower `shape.shape_eq` to the `scf` (and `std`) dialect. For now, this lowering
is limited to extent tensor operands.

Differential Revision: https://reviews.llvm.org/D82530

The issue that callback builders caused during rollback of conversion patterns
has been resolved. We can use them again.
See https://bugs.llvm.org/show_bug.cgi?id=46731

Differential Revision: https://reviews.llvm.org/D83932

To make it clear when shape error values cannot occur the shape operations can
operate on extent tensors. This change updates the lowering for `shape.reduce`
accordingly.

Differential Revision: https://reviews.llvm.org/D83944

Allow `shape.reduce` to take both `shape.shape` and `tensor<?xindex>` as an
argument.

Differential Revision: https://reviews.llvm.org/D83943

 This also fixes the outdated use of `n_views` in the documentation.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D83795

Some dialects have semantics which is not well represented by common
SSA structures with dominance constraints.  This patch allows
operations to declare the 'kind' of their contained regions.
Currently, two kinds are allowed: "SSACFG" and "Graph".  The only
difference between them at the moment is that SSACFG regions are
required to have dominance, while Graph regions are not required to
have dominance.  The intention is that this Interface would be
generated by ODS for existing operations, although this has not yet
been implemented. Presumably, if someone were interested in code
generation, we might also have a "CFG" dialect, which defines control
flow, but does not require SSA.

The new behavior is mostly identical to the previous behavior, since
registered operations without a RegionKindInterface are assumed to
contain SSACFG regions.  However, the behavior has changed for
unregistered operations.  Previously, these were checked for
dominance, however the new behavior allows dominance violations, in
order to allow the processing of unregistered dialects with Graph
regions.  One implication of this is that regions in unregistered
operations with more than one op are no longer CSE'd (since it
requires dominance info).

I've also reorganized the LangRef documentation to remove assertions
about "sequential execution", "SSA Values", and "Dominance".  Instead,
the core IR is simply "ordered" (i.e. totally ordered) and consists of
"Values".  I've also clarified some things about how control flow
passes between blocks in an SSACFG region. Control Flow must enter a
region at the entry block and follow terminator operation successors
or be returned to the containing op.  Graph regions do not define a
notion of control flow.

see discussion here:
https://llvm.discourse.group/t/rfc-allowing-dialects-to-relax-the-ssa-dominance-condition/833/53

Differential Revision: https://reviews.llvm.org/D80358

Fix clang tidy warnings in misc utilities - missing const or a star in
declaration.

Differential Revision: https://reviews.llvm.org/D83861

- Add function `verifyTypes` that Op's can call to do type checking verification
  along the control flow edges described the Op's RegionBranchOpInterface.
- We cannot rely on the verify methods on the OpInterface because the interface
  functions assume valid Ops, so they may crash if invoked on unverified Ops.
  (For example, scf.for getSuccessorRegions() calls getRegionIterArgs(), which
  dereferences getBody() block. If the scf.for is invalid with no body, this
  can lead to a segfault). `verifyTypes` can be called post op-verification to
  avoid this.

Differential Revision: https://reviews.llvm.org/D82829

This folds shape.broadcast where at least one operand is a scalar to the
other operand.

Also add an assemblyFormat for shape.broadcast and shape.concat.

Differential Revision: https://reviews.llvm.org/D83854

Summary:
This makes sure that their constant arguments are sorted to the back
and hence eases the specification of rewrite patterns.

Differential Revision: https://reviews.llvm.org/D83856

Update line wrapping.

Differential Revision: https://reviews.llvm.org/D83769

The use of the `scf.for` callback builder does not allow for a rollback of the
emitted conversions. Instead, we populate the loop body through the conversion
rewriter directly.

Differential Revision: https://reviews.llvm.org/D83873

Add `shape.shape_eq` operation to the shape dialect.
The operation allows to test shapes and extent tensors for equality.

Differential Revision: https://reviews.llvm.org/D82528

In 2b3c505d, the pointer arguments for the matrix load and store
intrinsics was changed to always be the element type of the vector
argument.

This patch updates the MatrixBuilder to not add the pointer type to the
overloaded types and adjusts the clang/mlir tests.

This should fix a few build failures on GreenDragon, including
 http://green.lab.llvm.org/green/job/test-suite-verify-machineinstrs-x86_64-O0-g/7891/

This patch addresses the comments from https://reviews.llvm.org/D83030 and
https://reviews.llvm.org/D82639. `this->` is removed when not inside the
template. Also, type conversion for `spv.func` takes `convertRegionTypes()`
in order to apply type conversion on all blocks within the function.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D83786

Summary: A reshape aliases its input memref, so it acts like a view.

Differential Revision: https://reviews.llvm.org/D83773

Summary:
linalg.copy + linalg.fill can be used to create a padded local buffer.
The `masked` attribute is only valid on this padded buffer.
When forwarding to vector.transfer ops, the attribute must be reset
conservatively.

Differential Revision: https://reviews.llvm.org/D83782

This adds a `parseOptionalAttribute` method to the OpAsmParser that allows for parsing optional attributes, in a similar fashion to how optional types are parsed. This also enables the use of attribute values as the first element of an assembly format optional group.

Differential Revision: https://reviews.llvm.org/D83712

[mlir][DialectConversion] Emit an error if an operation marked as erased has live users after conversion

Up until now, there has been an implicit agreement that when an operation is marked as
"erased" all uses of that operation's results are guaranteed to be removed during conversion. How this works in practice is that there is either an assert/crash/asan failure/etc. This revision adds support for properly detecting when an erased operation has dangling users, emits and error and fails the conversion.

Differential Revision: https://reviews.llvm.org/D82830

Fixed a typo in `std-ops-to-spitv.mlir` test.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D83791

Add missing const - addresses clang tidy warnings.

Differential Revision: https://reviews.llvm.org/D83794

- Arguments of the first block of a region are considered region arguments.
- Add API on Region class to deal with these arguments directly instead of
  using the front() block.
- Changed several instances of existing code that can use this API
- Fixes https://bugs.llvm.org/show_bug.cgi?id=46535

Differential Revision: https://reviews.llvm.org/D83599

- Avoid generating "assert(resultTypes.size() >= 0u)" which is always true

Differential Revision: https://reviews.llvm.org/D83735