160 Commits

Author SHA1 Message Date
River Riddle
6e3292b0b7 [mlir][OpFormatGen] Refactor type_ref into a more general ref directive
This allows for referencing nearly every component of an operation from within a custom directive.

It also fixes a bug with the current type_ref implementation, PR48478

Differential Revision: https://reviews.llvm.org/D96189
2021-02-09 14:33:48 -08:00
River Riddle
fe7c0d90b2 [mlir][IR] Remove the concept of OperationProperties
These properties were useful for a few things before traits had a better integration story, but don't really carry their weight well these days. Most of these properties are already checked via traits in most of the code. It is better to align the system around traits, and improve the performance/cost of traits in general.

Differential Revision: https://reviews.llvm.org/D96088
2021-02-09 12:00:15 -08:00
River Riddle
e21adfa32d [mlir] Mark LogicalResult as LLVM_NODISCARD
This makes ignoring a result explicit by the user, and helps to prevent accidental errors with dropped results. Marking LogicalResult as no discard was always the intention from the beginning, but got lost along the way.

Differential Revision: https://reviews.llvm.org/D95841
2021-02-04 15:10:10 -08:00
Alex Zinenko
5b91060dcc [mlir] Apply source materialization in case of transitive conversion
In dialect conversion infrastructure, source materialization applies as part of
the finalization procedure to results of the newly produced operations that
replace previously existing values with values having a different type.
However, such operations may be created to replace operations created in other
patterns. At this point, it is possible that the results of the _original_
operation are still in use and have mismatching types, but the results of the
_intermediate_ operation that performed the type change are not in use leading
to the absence of source materialization. For example,

  %0 = dialect.produce : !dialect.A
  dialect.use %0 : !dialect.A

can be replaced with

  %0 = dialect.other : !dialect.A
  %1 = dialect.produce : !dialect.A  // replaced, scheduled for removal
  dialect.use %1 : !dialect.A

and then with

  %0 = dialect.final : !dialect.B
  %1 = dialect.other : !dialect.A    // replaced, scheduled for removal
  %2 = dialect.produce : !dialect.A  // replaced, scheduled for removal
  dialect.use %2 : !dialect.A

in the same rewriting, but only the %1->%0 replacement is currently considered.

Change the logic in dialect conversion to look up all values that were replaced
by the given value and performing source materialization if any of those values
is still in use with mismatching types. This is performed by computing the
inverse value replacement mapping. This arguably expensive manipulation is
performed only if there were some type-changing replacements. An alternative
could be to consider all replaced operations and not only those that resulted
in type changes, but it would harm pattern-level composability: the pattern
that performed the non-type-changing replacement would have to be made aware of
the type converter in order to call the materialization hook.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95626
2021-02-04 11:15:11 +01:00
Mehdi Amini
a1d5bdf819 Make the folder more robust against op fold() methods that generate a type mismatch
We could extend this with an interface to allow dialect to perform a type
conversion, but that would make the folder creating operation which isn't
the case at the moment, and isn't necessarily always desirable.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95991
2021-02-04 01:58:56 +00:00
Vladislav Vinogradov
7cc7998497 [mlir] Allow to use constant lambda as callbacks for TypeConverter
Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95787
2021-02-02 18:26:45 +00:00
Alex Zinenko
0409eb2874 [mlir] Keep track of region signature conversions as argument replacements
In dialect conversion, signature conversions essentially perform block argument
replacement and are added to the general value remapping. However, the replaced
values were not tracked, so if a signature conversion was rolled back, the
construction of operand lists for the following patterns could have obtained
block arguments from the mapping and give them to the pattern leading to
use-after-free. Keep track of signature conversions similarly to normal block
argument replacement, and erase such replacements from the general mapping when
the conversion is rolled back.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95688
2021-02-02 10:38:31 +01:00
River Riddle
29d420e0bf [mlir][OpFormatGen] Add support for anchoring optional groups with types
This revision adds support for using either operand or result types to anchor an optional group. It also removes the arbitrary restriction that type directives must refer to variables in the same group, which is overly limiting for a declarative format syntax.

Fixes PR#48784

Differential Revision: https://reviews.llvm.org/D95109
2021-01-22 12:07:27 -08:00
River Riddle
c8fb6ee341 [mlir][PatternRewriter] Add a new hook to selectively replace uses of an operation
This revision adds a new `replaceOpWithIf` hook that replaces uses of an operation that satisfy a given functor. If all uses are replaced, the operation gets erased in a similar manner to `replaceOp`. DialectConversion support will be added in a followup as this requires adjusting how replacements are tracked there.

Differential Revision: https://reviews.llvm.org/D94632
2021-01-14 11:58:21 -08:00
River Riddle
00a61b327d [mlir][ODS] Add new RangedTypesMatchWith operation predicate
This is a variant of TypesMatchWith that provides support for variadic arguments. This is necessary because ranges generally can't use the default operator== comparators for checking equality.

Differential Revision: https://reviews.llvm.org/D94574
2021-01-14 11:35:49 -08:00
River Riddle
948be58258 [mlir][TypeDefGen] Add support for adding builders when generating a TypeDef
This allows for specifying additional get/getChecked methods that should be generated on the type, and acts similarly to how OpBuilders work. TypeBuilders have two additional components though:
* InferredContextParam
  - Bit indicating that the context parameter of a get method is inferred from one of the builder parameters
* checkedBody
  - A code block representing the body of the equivalent getChecked method.

Differential Revision: https://reviews.llvm.org/D94274
2021-01-11 12:06:22 -08:00
River Riddle
41d919aa29 [mlir][TypeDefGen] Remove the need to define parser/printer for singleton types
This allows for singleton types without an explicit parser/printer to simply use
the mnemonic as the assembly format, removing the need for these types to provide the parser/printer
fields.

Differential Revision: https://reviews.llvm.org/D94194
2021-01-06 15:00:14 -08:00
Kazuaki Ishizaki
2b638ed5a1 [mlir] NFC: fix trivial typos
fix typos under docs, test, and tools directories

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D94158
2021-01-07 02:36:02 +09:00
River Riddle
fc5cf50e89 [mlir] Remove the MutableDictionaryAttr class
This class used to serve a few useful purposes:
* Allowed containing a null DictionaryAttr
* Provided some simple mutable API around a DictionaryAttr

The first of which is no longer an issue now that there is much better caching support for attributes in general, and a cache in the context for empty dictionaries. The second results in more trouble than it's worth because it mutates the internal dictionary on every action, leading to a potentially large number of dictionary copies. NamedAttrList is a much better alternative for the second use case, and should be modified as needed to better fit it's usage as a DictionaryAttrBuilder.

Differential Revision: https://reviews.llvm.org/D93442
2020-12-17 17:18:42 -08:00
River Riddle
1b97cdf885 [mlir][IR][NFC] Move context/location parameters of builtin Type::get methods to the start of the parameter list
This better matches the rest of the infrastructure, is much simpler, and makes it easier to move these types to being declaratively specified.

Differential Revision: https://reviews.llvm.org/D93432
2020-12-17 13:01:36 -08:00
River Riddle
95019de8a1 [mlir][IR] Define the singleton builtin types in ODS instead of C++
This exposes several issues with the current generation that this revision also fixes.
 * TypeDef now allows specifying the base class to use when generating.
 * TypeDef now inherits from DialectType, which allows for using it as a TypeConstraint
 * Parser/Printers are now no longer generated in the header(removing duplicate symbols), and are now only generated when necessary.
    - Now that generatedTypeParser/Printer are only generated in the definition file,
      existing users will need to manually expose this functionality when necessary.
 * ::get() is no longer generated for singleton types, because it isn't necessary.

Differential Revision: https://reviews.llvm.org/D93270
2020-12-15 13:42:19 -08:00
River Riddle
6bc9439f59 [mlir][OpAsmParser] Add support for parsing integer literals without going through IntegerAttr
Some operations use integer literals as part of their custom format that don't necessarily map to an internal IntegerAttr. This revision exposes the same `parseInteger` functions as the DialectAsmParser to allow for these operations to parse integer literals without incurring the otherwise unnecessary roundtrip through IntegerAttr.

Differential Revision: https://reviews.llvm.org/D93152
2020-12-14 12:00:43 -08:00
River Riddle
c234b65cef [mlir][OpFormat] Add support for emitting newlines from the custom format of an operation
This revision adds a new `printNewline` hook to OpAsmPrinter that allows for printing a newline within the custom format of an operation, that is then indented to the start of the operation. Support for the declarative assembly format is also added, in the form of a `\n` literal.

Differential Revision: https://reviews.llvm.org/D93151
2020-12-14 12:00:43 -08:00
Christian Sigg
1ffc1aaa09 [mlir] Use mlir::OpState::operator->() to get to methods of mlir::Operation.
This is a preparation step to remove those methods from OpState.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93098
2020-12-13 09:58:16 +01:00
River Riddle
186c154991 [mlir] Remove the dependency on StandardOps from FoldUtils
OperationFolder currently uses ConstantOp as a backup when trying to materialize a constant after an operation is folded. This dependency isn't really useful or necessary given that dialects can/should provide a `materializeConstant` implementation.

Fixes PR#44866

Differential Revision: https://reviews.llvm.org/D92980
2020-12-10 14:13:57 -08:00
Christian Sigg
0bf4a82a5a [mlir] Use mlir::OpState::operator->() to get to methods of mlir::Operation. This is a preparation step to remove the corresponding methods from OpState.
Reviewed By: silvas, rriddle

Differential Revision: https://reviews.llvm.org/D92878
2020-12-09 12:11:32 +01:00
River Riddle
7924fb34f3 [mlir][OpFormatGen] Add support for optional enum attributes
The check for formatting enum attributes was missing a call to get the base attribute, which is necessary to strip off the top-level OptionalAttr<> wrapper.

Differential Revision: https://reviews.llvm.org/D92713
2020-12-04 21:00:44 -08:00
River Riddle
09f7a55fad [mlir][Types][NFC] Move all of the builtin Type classes to BuiltinTypes.h
This is part of a larger refactoring the better congregates the builtin structures under the BuiltinDialect. This also removes the problematic "standard" naming that clashes with the "standard" dialect, which is not defined within IR/. A temporary forward is placed in StandardTypes.h to allow time for downstream users to replaced references.

Differential Revision: https://reviews.llvm.org/D92435
2020-12-03 18:02:10 -08:00
Haruki Imai
b2391d5f0d [MLIR] Normalize the results of normalizable operations
Memrefs with affine_map in the results of normalizable operation were
not normalized by `--normalize-memrefs` option. This patch normalizes
them.

Differential Revision: https://reviews.llvm.org/D88719
2020-12-03 19:34:07 +05:30
Rahul Joshi
6b043ecdb7 [MLIR] Fix genTypeInterfaceMethods() to work correctly with InferTypeOpInterface
- Change InferTypeOpInterface::inferResultTypes to use fully qualified types matching
  the ones generated by genTypeInterfaceMethods, so the redundancy can be detected.
- Move genTypeInterfaceMethods() before genOpInterfaceMethods() so that the
  inferResultTypes method generated by genTypeInterfaceMethods() takes precedence
  over the declaration that might be generated by genOpInterfaceMethods()
- Modified an op in the test dialect to exercise this (the modified op would fail to
  generate valid C++ code due to duplicate inferResultTypes methods).

Differential Revision: https://reviews.llvm.org/D92414
2020-12-01 13:36:25 -08:00
Jacques Pienaar
e534cee26a [mlir] Add a shape function library op
Op with mapping from ops to corresponding shape functions for those op
in the library and mechanism to associate shape functions to functions.
The mapping of operand to shape function is kept separate from the shape
functions themselves as the operation is associated to the shape
function and not vice versa, and one could have a common library of
shape functions that can be used in different contexts.

Use fully qualified names and require a name for shape fn lib ops for
now and an explicit print/parse (based around the generated one & GPU
module op ones).

This commit reverts d9da4c3e73720badfcac5c0dc63c0285bb690770. Fixes
missing headers (don't know how that was working locally).

Differential Revision: https://reviews.llvm.org/D91672
2020-11-29 11:15:30 -08:00
Mehdi Amini
d9da4c3e73 Revert "[mlir] Add a shape function library op"
This reverts commit 6dd9596b19d7679c562f8e866be6d0c3d7c21994.

Build is broken.
2020-11-29 05:28:42 +00:00
Jacques Pienaar
6dd9596b19 [mlir] Add a shape function library op
Op with mapping from ops to corresponding shape functions for those op
in the library and mechanism to associate shape functions to functions.
The mapping of operand to shape function is kept separate from the shape
functions themselves as the operation is associated to the shape
function and not vice versa, and one could have a common library of
shape functions that can be used in different contexts.

Use fully qualified names and require a name for shape fn lib ops for
now and an explicit print/parse (based around the generated one & GPU
module op ones).

Differential Revision: https://reviews.llvm.org/D91672
2020-11-28 15:53:59 -08:00
Tres Popp
b0750e2df6 Fix rollback of first block erasure in a region.
Differential Revision: https://reviews.llvm.org/D91788
2020-11-19 21:24:10 +01:00
River Riddle
65fcddff24 [mlir][BuiltinDialect] Resolve comments from D91571
* Move ops to a BuiltinOps.h
* Add file comments
2020-11-19 11:12:49 -08:00
River Riddle
c0958b7b4c [mlir] Add support for referencing a SymbolRefAttr in a SideEffectInstance
This allows for operations that exclusively affect symbol operations to better describe their side effects.

Differential Revision: https://reviews.llvm.org/D91581
2020-11-18 18:38:43 -08:00
Alex Zinenko
052d24af29 [mlir] Introduce support for parametric side-effects
The side effect infrastructure is based on the Effect and Resource class
templates, instances of instantiations of which are constructed as
thread-local singletons. With this scheme, it is impossible to further
parameterize either of those, or the EffectInstance class that contains
pointers to an Effect and Resource instances. Such a parameterization is
necessary to express more detailed side effects, e.g. those of a loop or
a function call with affine operations inside where it is possible to
precisely specify the slices of accessed buffers.

Include an additional Attribute to EffectInstance class for further
parameterization. This allows to leverage the dialect-specific
registration and uniquing capabilities of the attribute infrastructure
without requiring Effect or Resource instantiations to be attached to a
dialect themselves.

Split out the generic part of the side effect Tablegen classes into a
separate file to avoid generating built-in MemoryEffect interfaces when
processing any .td file that includes SideEffectInterfaceBase.td.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D91493
2020-11-18 10:52:17 +01:00
Rahul Joshi
8a4fe75d70 [NFC] Add unit tests for printing/parsing of variadic operands and results.
Differential Revision: https://reviews.llvm.org/D91557
2020-11-17 09:21:46 -08:00
Alex Zinenko
88f25bda13 [mlir] Allow for using interface class name in ODS interface definitions
It may be necessary for interface methods to process or return variables with
the interface class type, in particular for attribute and type interfaces that
can return modified attributes and types that implement the same interface.
However, the code generated by ODS in this case would not compile because the
signature (and the body if provided) appear in the definition of the Model
class and before the interface class, which derives from the Model. Change the ODS
interface method generator to emit only method declarations in the Model class
itself, and emit method definitions after the interface class. Mark as "inline"
since their definitions are still emitted in the header and are no longer
implicitly inline. Add a forward declaration of the interface class before the
Concept+Model classes to make the class name usable in declarations.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D91499
2020-11-17 14:28:55 +01:00
River Riddle
73ca690df8 [mlir][NFC] Remove references to Module.h and Function.h
These includes have been deprecated in favor of BuiltinDialect.h, which contains the definitions of ModuleOp and FuncOp.

Differential Revision: https://reviews.llvm.org/D91572
2020-11-17 00:55:47 -08:00
Jean-Michel Gorius
e47805c995 [mlir] Add plus, star and optional less/greater parsing
The tokens are already handled by the lexer. This revision exposes them
through the parser interface.

This revision also adds missing functions for question mark parsing and
completes the list of valid punctuation tokens in the documentation.

Differential Revision: https://reviews.llvm.org/D90907
2020-11-12 13:28:31 +01:00
Christian Sigg
5dfe6545d4 [mlir] Allow omitting spaces in assemblyFormat with a `` literal.
I would like to use this for D90589 to switch std.alloc to assemblyFormat.
Hopefully it will be useful in other places as well.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D91068
2020-11-11 09:34:43 +01:00
Sean Silva
b4fa28b408 [mlir] Add ElementwiseMappable trait and apply it to std elementwise ops.
This patch adds an `ElementwiseMappable` trait as discussed in the RFC
here:
https://llvm.discourse.group/t/rfc-std-elementwise-ops-on-tensors/2113/23

This trait can power a number of transformations and analyses.
A subsequent patch adds a convert-elementwise-to-linalg pass exhibits
how this trait allows writing generic transformations.
See https://reviews.llvm.org/D90354 for that patch.

This trait slightly changes some verifier messages, but the diagnostics
are usually about as good. I fiddled with the ordering of the trait in
the .td file trait lists to minimize the changes here.

Differential Revision: https://reviews.llvm.org/D90731
2020-11-10 13:44:44 -08:00
Alexander Belyaev
72c65b698e [mlir] Move TestDialect and its passes to mlir::test namespace.
TestDialect has many operations and they all live in ::mlir namespace.
Sometimes it is not clear whether the ops used in the code for the test passes
belong to Standard or to Test dialects.

Also, with this change it is easier to understand what test passes registered
in mlir-opt are actually passes in mlir/test.

Differential Revision: https://reviews.llvm.org/D90794
2020-11-05 15:29:15 +01:00
Alexander Bosch
5452fa6a59 [MLIR] Added test operations to replace linalg dependency for
BufferizeTests.

Summary:
Added test operations to replace the LinalgDialect dependency in tests
which use the buffer-deallocation, buffer-hoisting,
buffer-loop-hoisting, promote-buffers-to-stack,
buffer-placement-preparation-allowed-memref-resutls and
buffer-placement-preparation pass. Adapted the corresponding tests cases
and TestBufferPlacement.cpp.

Differential Revision: https://reviews.llvm.org/D90037
2020-11-03 12:18:49 +01:00
River Riddle
a463ea50a4 [mlir][ASM] Refactor how attribute/type aliases are specified.
Previously they were separated into "instance" and "kind" aliases, and also required that the dialect know ahead of time all of the instances that would have a corresponding alias. This approach was very clunky and not ergonomic to interact with. The new approach is to provide the dialect with an instance  of an attribute/type to provide an alias for, fully replacing the original split approach.

Differential Revision: https://reviews.llvm.org/D89354
2020-10-30 00:39:46 -07:00
River Riddle
fa4174792a [mlir][Inliner] Add a wouldBeCloned flag to each of the isLegalToInline hooks.
Often times the legality of inlining can change depending on if the callable is going to be inlined in-place, or cloned. For example, some operations are not allowed to be duplicated and can only be inlined if the original callable will cease to exist afterwards. The new `wouldBeCloned` flag allows for dialects to hook into this when determining legality.

Differential Revision: https://reviews.llvm.org/D90360
2020-10-28 21:49:28 -07:00
River Riddle
501fda0167 [mlir][Inliner] Add a new hook for checking if it is legal to inline a callable into a call
In certain situations it isn't legal to inline a call operation, but this isn't something that is possible(at least not easily) to prevent with the current hooks. This revision adds a new hook so that dialects with call operations that shouldn't be inlined can prevent it.

Differential Revision: https://reviews.llvm.org/D90359
2020-10-28 21:49:28 -07:00
John Demme
035e12e664 [MLIR] [ODS] Allowing attr-dict in custom directive
Enhance tblgen's declarative assembly format to allow `attr-dict` in
custom directives.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D89772
2020-10-28 01:24:16 +00:00
Alex Zinenko
89eab30e5c [mlir] use OpBuilderDAG instead of OpBuilder
A recent commit introduced a new syntax for specifying builder arguments in
ODS, which is better amenable to automated processing, and deprecated the old
form. Transition all dialects as well as Linalg ODS generator to use the new
syntax.

Add a deprecation notice to ODS generator.

Reviewed By: rriddle, jpienaar

Differential Revision: https://reviews.llvm.org/D90038
2020-10-27 10:21:49 +01:00
River Riddle
3fffffa882 [mlir][Pattern] Add a new FrozenRewritePatternList class
This class represents a rewrite pattern list that has been frozen, and thus immutable. This replaces the uses of OwningRewritePatternList in pattern driver related API, such as dialect conversion. When PDL becomes more prevalent, this API will allow for optimizing a set of patterns once without the need to do this per run of a pass.

Differential Revision: https://reviews.llvm.org/D89104
2020-10-26 18:01:06 -07:00
River Riddle
b6eb26fd0e [mlir][NFC] Move around the code related to PatternRewriting to improve layering
There are several pieces of pattern rewriting infra in IR/ that really shouldn't be there. This revision moves those pieces to a better location such that they are easier to evolve in the future(e.g. with PDL). More concretely this revision does the following:

* Create a Transforms/GreedyPatternRewriteDriver.h and move the apply*andFold methods there.
The definitions for these methods are already in Transforms/ so it doesn't make sense for the declarations to be in IR.

* Create a new lib/Rewrite library and move PatternApplicator there.
This new library will be focused on applying rewrites, and will also include compiling rewrites with PDL.

Differential Revision: https://reviews.llvm.org/D89103
2020-10-26 18:01:06 -07:00
River Riddle
b99bd77162 [mlir][Pattern] Refactor the Pattern class into a "metadata only" class
The Pattern class was originally intended to be used for solely matching operations, but that use never materialized. All of the pattern infrastructure uses RewritePattern, and the infrastructure for pure matching(Matchers.h) is implemented inline. This means that this class isn't a useful abstraction at the moment, so this revision refactors it to solely encapsulate the "metadata" of a pattern. The metadata includes the various state describing a pattern; benefit, root operation, etc. The API on PatternApplicator is updated to now operate on `Pattern`s as nothing special from `RewritePattern` is necessary.

This refactoring is also necessary for the upcoming use of PDL patterns alongside C++ rewrite patterns.

Differential Revision: https://reviews.llvm.org/D86258
2020-10-26 18:01:06 -07:00
Christian Sigg
f9b8a0b96b [mlir] Allow space literals ( ) in assemblyFormat.
Spaces are only printed, not parsed.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D89585
2020-10-19 07:25:28 +02:00
John Demme
f402e682d0 [MLIR] ODS TypeDefs: getChecked() and internal enhancements
Have the ODS TypeDef generator write the getChecked() definition.
Also add to TypeParamCommaFormatter a `JustParams` format and
refactor around that.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D89438
2020-10-19 01:10:05 +00:00