The API on TupleType::getFlattenedTypes follows our normal conventions by accepting an output parameter, but requires callers to allocate their own storage and lends itself to use in an imperative style. This makes it difficult to use in tablegen. The current solution is to define a lambda that is immediately called, but it's cleaner to extract that into a helper.
PiperOrigin-RevId: 258672046
We only verify broadcastable trait verifier and don't care about mutations so removed all CHECK statements and FileCheck invocation.
PiperOrigin-RevId: 258662882
This cl standardizes the printing of the type of dialect attributes to work the same as other attribute kinds. The type of dialect attributes will trail the dialect specific portion:
`#` dialect-namespace `<` attr-data `>` `:` type
The attribute parsing hooks on Dialect have been updated to take an optionally null expected type for the attribute. This matches the respective parseAttribute hooks in the OpAsmParser.
PiperOrigin-RevId: 258661298
This intends to reduce duplication and ensure that new informations added
to the developer guide (like the recent testing good practice) are not
missed by new contributors.
PiperOrigin-RevId: 258650672
Currently, Broadcastable trait also rejects instances when the op result has shape other than what can be statically inferred based on the operand shapes even if the result shape is compatible with the inferred broadcasted shape.
For example,
(tensor<3x2xi32>, tensor<*xi32>) -> tensor<4x3x2xi32>
(tensor<2xi32>, tensor<2xi32>) -> tensor<*xi32>
PiperOrigin-RevId: 258647493
This cl begins a large refactoring over how signature types are converted in the DialectConversion infrastructure. The signatures of blocks are now converted on-demand when an operation held by that block is being converted. This allows for handling the case where a region is created as part of a pattern, something that wasn't possible previously.
This cl also generalizes the region signature conversion used by FuncOp to work on any region of any operation. This generalization allows for removing the 'apply*Conversion' functions that were specific to FuncOp/ModuleOp. The implementation currently uses a new hook on TypeConverter, 'convertRegionSignature', but this should ideally be removed in favor of using Patterns. That depends on adding support to the PatternRewriter used by ConversionPattern to allow applying signature conversions to regions, which should be coming in a followup.
PiperOrigin-RevId: 258645733
As the number of contributors begins to scale, and the number of tests rise, it is important to detail the testing strategy in MLIR and best practices for writing those tests.
PiperOrigin-RevId: 258612585
This explicit tag is useful is several ways:
*) This simplifies how to mark sub sections of a dialect as explicitly unsupported, e.g. my target supports all operations in the foo dialect except for these select few. This is useful for partial lowerings between dialects.
*) Partial conversions will now verify that operations that were explicitly marked as illegal must be converted. This provides some guarantee that the operations that need to be lowered by a specific pass will be.
PiperOrigin-RevId: 258582879
Users generally want several different modes of conversion. This cl refactors DialectConversion to provide two:
* Partial (applyPartialConversion)
- This mode allows for illegal operations to exist in the IR, and does not fail if an operation fails to be legalized.
* Full (applyFullConversion)
- This mode fails if any operation is not properly legalized to the conversion target. This allows for ensuring that the IR after a conversion only contains operations legal for the target.
PiperOrigin-RevId: 258412243
Mostly one would use the type specification directly on the operand, but for
cases where the type of the operand depends on other operand types, `TypeIs`
attribute can be used to construct verification methods.
PiperOrigin-RevId: 258411758
This patch added a new argument to the fakeQuantAttrsToType utility method, so
it can be used to convert min/max to quantized type with different signed
storage types.
PiperOrigin-RevId: 258382538
Unless we explicitly name a template instantiation in .td file, its def
name will be "anonymous_<number>". We typically give base-level Attr
template instantiation a name by writing `def AnAttr : Attr<...>`. But
when `AnAttr` is further wrapped in classes like OptionalAttr, the name
is lost unless explicitly def'ed again. These implicit-named template
instantiation is fairly common when writing op definitions. Those wrapper
classes are just essentially attaching more information to the attribute.
Without a proper way to trace back to the original attribute def name
can cause problems for consumers wanting to handle attributes according
to their types.
Previously we handled OptionalAttr and DefaultValuedAttr specifically,
but Confined was not supported. And they can compose together to have
Confined<OptionalAttr<...>, [...]>. So this CL moves the baseAttr field
to main Attr class (like isOptional) and set it only on the innermost
wrapper class.
PiperOrigin-RevId: 258341646
With the introduction of the Loop dialect, uses of the `linalg.for` operation can now be subsumed 1-to-1 by `loop.for`.
This CL performs the replacement and tests are updated accordingly.
PiperOrigin-RevId: 258322565
These methods don't compose well with the rest of conversion framework, and create artificial breaks in conversion. Replace these methods with two(populateAffineToStdConversionPatterns and populateLoopToStdConversionPatterns respectively) that populate a list of patterns to perform the same behavior.
PiperOrigin-RevId: 258219277
This cl changes the way that operations/blocks to convert are collected/traversed so that parent region operations can be legalized before their bodies. Most RewritePatterns for region operations assume that the entry arguments to each region are yet to be converted. Given that the bodies are currently converted first, this makes it difficult to fit these patterns into the same run as one converting types.
The operations/blocks to convert are now collected before any legalization has run, which simplifies the conversion logic itself, as legalization may insert new operations, move blocks, etc.
PiperOrigin-RevId: 258170158
This CL extends the linalg ops that can be tiled and fused to operations that take either views, scalar or vector operands.
PiperOrigin-RevId: 258159734
ConversionPattern should ideally only be used when the types of the operands are changing, which in this case they aren't. Using OpRewritePattern also lends to much simpler code.
PiperOrigin-RevId: 258158474
The dependecy on standard type is mandated by attribute verifiers on some
operations (e.g., llvm.constant) that use values of those types.
PiperOrigin-RevId: 258153134
Multiple (perfectly) nested loops with independent bounds can be combined into
a single loop and than subdivided into blocks of arbitrary size for load
balancing or more efficient parallelism exploitation. However, MLIR wants to
preserve the multi-dimensional multi-loop structure at higher levels of
abstraction. Introduce a transformation that coalesces nested loops with
independent bounds so that they can be further subdivided by tiling.
PiperOrigin-RevId: 258151016
This CL extends the linalg ops that can be tiled and fused to operations that take either views, scalar or vector operands.
PiperOrigin-RevId: 258149291
Due to the absence of ODS support for enum attributes, the implementation of
the LLVM dialect `icmp` operation was reusing the comparison predicate from the
Standard dialect, creating an avoidable library dependency. With ODS support
and ICmpPredicate attribute recently introduced, the dependency is no longer
justified. Update the Standard to LLVM convresion to also convert the
CmpIPredicate into LLVM::ICmpPredicate and remove the unnecessary includes.
Note that the MLIRLLVMIR library did not explicitly depend on MLIRStandardOps,
requiring dependees of MLIRLLVMIR to also depend on MLIRStandardOps, which
should no longer be the case.
PiperOrigin-RevId: 258148456
Use the recently introduced enum-gen functionality to define the predicate
attribute of the ICmp LLVM dialect operation directly in ODS. This removes the
need for manually-coded string-to-integer conversion functions and contributes
to the overall homogenization of the operation definitions.
PiperOrigin-RevId: 258143923
These ops should not belong to the std dialect.
This CL extracts them in their own dialect and updates the corresponding conversions and tests.
PiperOrigin-RevId: 258123853
When using a RewritePattern and replacing an operation with an existing value, that value may have already been replaced by something else. This cl ensures that only the final value is used when applying rewrites.
PiperOrigin-RevId: 258058488
following SPIRV Instructions serializaiton/deserialization are added
as well
OpFunction
OpFunctionParameter
OpFunctionEnd
OpReturn
PiperOrigin-RevId: 257869806
* Changed SPIR-V types to all use unsigned for member type count and index
* Used the same method name for getting element type and count
* Improved spv.CompositeExtract verification a bit
PiperOrigin-RevId: 257862580
The verifier passes are NO-OP and are only useful to print after in the case of failure. This removes a lot of unnecessary clutter when printing after/before all passes.
PiperOrigin-RevId: 257836310
This field wasn't updated as the insertion point changed, making it potentially dangerous given the multi-level of MLIR(e.g. 'createBlock' would always insert the new block in 'region'). This also allows for building an OpBuilder with just a context.
PiperOrigin-RevId: 257829135
It is for preventing subtle bugs when writing predicates with wrong APIs. For example,
// BAD example for checking a quant type has an i8 or i16 storage type.
auto qtype = type.dyn_cast<mlir::quant::UniformQuantizedType>()
if (qtype.isSigned() && (qtype.isInteger(8) || qtype.isInteger(16)))
PiperOrigin-RevId: 257823263
SPIR-V has a JSON grammar file that defines the syntax of SPIR-V
instructions. However, its lacks fine-grained constraints on
instruction operands; those information is only available as
natural language sentences in the SPIR-V spec, which also contains
the detailed documentation for each SPIR-V instruction.
This CL pulls information from both the JSON grammar and HTML
spec. It right now uses the former to deduce the arguments and
results (with coarse-grained constraints) and the latter for
documentation. In the future we can add the functionality to
match certain natural language sentences for more fine-grained
constraints, but right now the developer is expected to update
the generated op definition. This should serve as a nice
bootstrap step to save efforts.
PiperOrigin-RevId: 257821205
The GreedyPatternRewriteDriver currently does not notify the OperationFolder when constants are removed as part of a pattern match. This materializes in a nasty bug where a different operation may be allocated to the same address. This causes an assertion in the OperationFolder when it gets notified of the new operations removal.
PiperOrigin-RevId: 257817627
This CL splits the lowering of affine to LLVM into 2 parts:
1. affine -> std
2. std -> LLVM
The conversions mostly consists of splitting concerns between the affine and non-affine worlds from existing conversions.
Short-circuiting of affine `if` conditions was never tested or exercised and is removed in the process, it can be reintroduced later if needed.
LoopParametricTiling.cpp is updated to reflect the newly added ForOp::build.
PiperOrigin-RevId: 257794436
PassRegistration with an optional constructor was introduced after the
LoopsToGPUPass, which resorted to deriving one pass from another as a means of
accepting options supplied as command-line arguments. Use PassRegistration with
constructor instead of defining a derived pass for LoopsToGPU. Also rename the
pass to better reflect its current nature.
PiperOrigin-RevId: 257786923
Geoffrey Martin-Noble