Commit Graph

1106 Commits

Author SHA1 Message Date
Christian Sigg 5fedf30748 [mlir] Make cuInit() call thread-safe.
Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D98024
2021-03-05 16:06:15 +01:00
River Riddle 1447ec5182 [mlir][AttrDefGen] Add support for specifying the value type of an attribute
The value type of the attribute can be specified by either overriding the typeBuilder field on the AttrDef, or by providing a parameter of type `AttributeSelfTypeParameter`. This removes the need to define custom storage class constructors for attributes that have a value type other than NoneType.

Differential Revision: https://reviews.llvm.org/D97590
2021-03-04 13:04:05 -08:00
Arpith C. Jacob 4e393350c5 [mlir] Add an AccessGroup attribute to load/store LLVM dialect ops and generate the access_group LLVM metadata.
This also includes LLVM dialect ops created from intrinsics.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D97944
2021-03-04 18:17:23 +01:00
Alex Zinenko 32c49c7d73 [mlir] ODS: change OpBuilderDAG to OpBuilder
We no longer have the non-DAG version.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D97856
2021-03-04 10:55:02 +01:00
Alex Zinenko 19db802e7b [mlir] make implementations of translation to LLVM IR interfaces private
There is no need for the interface implementations to be exposed, opaque
registration functions are sufficient for all users, similarly to passes.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D97852
2021-03-04 09:16:32 +01:00
River Riddle 83ef862fad [mlir] Add support for generating Attribute classes for ODS
The support for attributes closely maps that of Types (basically 1-1) given that Attributes are defined in exactly the same way as Types. All of the current ODS TypeDef classes get an Attr equivalent. The generation of the attribute classes themselves share the same generator as types.

Differential Revision: https://reviews.llvm.org/D97589
2021-03-03 16:41:49 -08:00
Hanhan Wang 497b7b8c00 [mlir][linalg] Delete unused vars if there are shaped-only operands.
Reviewed By: stella.stamenova

Differential Revision: https://reviews.llvm.org/D97851
2021-03-03 09:36:08 -08:00
Vladislav Vinogradov 5d613e42d3 [mlir][ODS] Use StringLiteral instead of StringRef when applicable
Use `StringLiteral` for function return type if it is known to return
constant string literals only.

This will make it visible to API users, that such values can be safely
stored, since they refers to constant data, which will never be deallocated.

`StringRef` is general is not safe to store for a long term,
since it might refer to temporal data allocated in heap.

Add `inline` and `constexpr` methods support to `OpMethod`.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D97390
2021-03-03 16:15:12 +03:00
Christian Sigg 9d7be77bf9 [mlir] Move cuda tests
Move test inputs to test/Integration directory.
Move runtime wrappers to ExecutionEngine.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D97463
2021-03-03 13:16:51 +01:00
Hanhan Wang c0f8115c73 [mlir][linalg] Only generate one var for an attrUse.
Some variables are unused after D97383 landed. We should generate one symbol for one attrUse.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D97794
2021-03-02 12:48:20 -08:00
Stella Laurenzo d36a15de1f [mlir][linalg] Memoize indexing map generation.
Differential Revision: https://reviews.llvm.org/D97602
2021-03-01 21:15:40 -08:00
Stella Stamenova 801067f4c0 [mlir][lldb] Fix several gcc warnings in mlir and lldb
These warnings are raised when compiling with gcc due to either having too few or too many commas, or in the case of lldb, the possibility of a nullptr.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D97586
2021-03-01 13:48:22 -08:00
Stella Laurenzo 2ceedc3a20 [mlir][linalg] Add symbolic type conversion to linalg named ops.
This enables this kind of construct in the DSL to generate a named op that is polymorphic over numeric type variables `T` and `U`, generating the correct arithmetic casts at construction time:

```
@tc_def_op
def polymorphic_matmul(A=TensorDef(T1, S.M, S.K),
                       B=TensorDef(T2, S.K, S.N),
                       C=TensorDef(U, S.M, S.N, output=True)):
  implements(ContractionOpInterface)
  C[D.m, D.n] += cast(U, A[D.m, D.k]) * cast(U, B[D.k, D.n])
```

Presently, this only supports type variables that are bound to the element type of one of the arguments, although a further extension that allows binding a type variable to an attribute would allow some more expressiveness and may be useful for some formulations. This is left to a future patch. In addition, this patch does not yet materialize the verifier support which ensures that types are bound correctly (for such simple examples, failing to do so will yield IR that fails verification, it just won't yet fail with a precise error).

Note that the full grid of extensions/truncation/int<->float conversions are supported, but many of them are lossy and higher level code needs to be mindful of numerics (it is not the job of this level).

As-is, this should be sufficient for most integer matmul scenarios we work with in typical quantization schemes.

Differential Revision: https://reviews.llvm.org/D97603
2021-02-27 15:52:35 -08:00
Stella Laurenzo 5867c18e2c [mlir][linalg] Generate additional interfaces for named ops.
* Adds ContractionOpInterface to polymorphic_matmul.

Differential Revision: https://reviews.llvm.org/D97601
2021-02-27 15:43:41 -08:00
River Riddle e6260ad043 [mlir] Simplify various pieces of code now that Identifier has access to the Context/Dialect
This also exposed a bug in Dialect loading where it was not correctly identifying identifiers that had the dialect namespace as a prefix.

Differential Revision: https://reviews.llvm.org/D97431
2021-02-26 18:00:05 -08:00
Jacques Pienaar 91ab48ea6b [mlir] Add regions to OpAdaptor
Allows querying regions too via OpAdaptor's generated. This does not yet move region verification to adaptor nor require regions for ops where needed.

Differential Revision: https://reviews.llvm.org/D97519
2021-02-26 16:25:00 -08:00
Hanhan Wang 855a119604 [mlir][linalg] Allow TC ops taking an unused shaped operand.
If one operand is not used in the formula, it will be considered a
shaped operand. And the result of indexing map of the operand will be the first
reduction dims.

Depends On D97383

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D97384
2021-02-26 06:45:56 -08:00
Benjamin Kramer 4941fef9c4 [mlir] Silence some deprecation warnings after dffc487b07 2021-02-26 15:15:56 +01:00
Vladislav Vinogradov f4d78a5e3a [mlir][NFC] Add missing namespace qualifier to ODS generated code
Use `::mlir::Region` inside array ref for `VariadicRegion`.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D97376
2021-02-25 17:48:32 +03:00
Marius Brehler 699041123e [mlir] Fix emitting attribute documentation
This fixes the documentation emitted for type parameters. Also adds a
missing empty line, rendered as line break in mark down.

Co-authored-by: Simon Camphausen <simon.camphausen@iml.fraunhofer.de>

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D97267
2021-02-25 08:23:50 +01:00
Hanhan Wang 21895a2bef [mlir][linalg] Reuse the symbol if attribute uses are identical.
Depends On D97312

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D97383
2021-02-24 11:42:13 -08:00
Hanhan Wang 705068cb8c [mlir][linalg] Support for using output values in TC definitions.
This will allow us to define select(pred, in, out) for TC ops, which is useful
for pooling ops.

Reviewed By: antiagainst

Differential Revision: https://reviews.llvm.org/D97312
2021-02-24 11:37:45 -08:00
Christian Sigg eb8d6af5e4 [mlir] Specify cuda-runner pass pipeline as command line options.
The cuda-runner registers two pass pipelines for nested passes,
so that we don't have to use verbose textual pass pipeline specification.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D97091
2021-02-24 14:36:52 +01:00
River Riddle 06e25d5645 [mlir][IR] Refactor the `getChecked` and `verifyConstructionInvariants` methods on Attributes/Types
`verifyConstructionInvariants` is intended to allow for verifying the invariants of an attribute/type on construction, and `getChecked` is intended to enable more graceful error handling aside from an assert. There are a few problems with the current implementation of these methods:
* `verifyConstructionInvariants` requires an mlir::Location for emitting errors, which is prohibitively costly in the situations that would most likely use them, e.g. the parser.
This creates an unfortunate code duplication between the verifier code and the parser code, given that the parser operates on llvm::SMLoc and it is an undesirable overhead to pre-emptively convert from that to an mlir::Location.
* `getChecked` effectively requires duplicating the definition of the `get` method, creating a quite clunky workflow due to the subtle different in its signature.

This revision aims to talk the above problems by refactoring the implementation to use a callback for error emission. Using a callback allows for deferring the costly part of error emission until it is actually necessary.

Due to the necessary signature change in each instance of these methods, this revision also takes this opportunity to cleanup the definition of these methods by:
* restructuring the signature of `getChecked` such that it can be generated from the same code block as the `get` method.
* renaming `verifyConstructionInvariants` to `verify` to match the naming scheme of the rest of the compiler.

Differential Revision: https://reviews.llvm.org/D97100
2021-02-22 17:37:49 -08:00
Kern Handa 2d62212b06 [mlir] Export CUDA and Vulkan runtime wrappers on Windows
Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D97140
2021-02-21 22:58:55 -08:00
Stella Laurenzo 6c9541d4dd Implement simple type polymorphism for linalg named ops.
* It was decided that this was the end of the line for the existing custom tc parser/generator, and this is the first step to replacing it with a declarative format that maps well to mathy source languages.
* One such source language is implemented here: https://github.com/stellaraccident/mlir-linalgpy/blob/main/samples/mm.py
  * In fact, this is the exact source of the declarative `polymorphic_matmul` in this change.
  * I am working separately to clean this python implementation up and add it to MLIR (probably as `mlir.tools.linalg_opgen` or equiv). The scope of the python side is greater than just generating named ops: the ops are callable and directly emit `linalg.generic` ops fully dynamically, and this is intended to be a feature for frontends like npcomp to define custom linear algebra ops at runtime.
* There is more work required to handle full type polymorphism, especially with respect to integer formulations, since they require more specificity wrt types.
* Followups to this change will bring the new generator to feature parity with the current one and delete the current. Roughly, this involves adding support for interface declarations and attribute symbol bindings.

Differential Revision: https://reviews.llvm.org/D97135
2021-02-21 14:30:31 -08:00
Eugene Zhulenev f99ccf6516 [mlir] Add math polynomial approximation pass
This gives ~30x speedup compared to expanding Tanh into exp operations:

```
name                  old cpu/op  new cpu/op  delta
BM_mlir_Tanh_f32/10    253ns ± 3%    55ns ± 7%  -78.35%  (p=0.000 n=44+41)
BM_mlir_Tanh_f32/100  2.21µs ± 4%  0.14µs ± 8%  -93.85%  (p=0.000 n=48+49)
BM_mlir_Tanh_f32/1k   22.6µs ± 4%   0.7µs ± 5%  -96.68%  (p=0.000 n=32+42)
BM_mlir_Tanh_f32/10k   225µs ± 5%     7µs ± 6%  -96.88%  (p=0.000 n=49+55)

name                  old time/op             new time/op             delta
BM_mlir_Tanh_f32/10    259ns ± 1%               56ns ± 2%  -78.31%        (p=0.000 n=41+39)
BM_mlir_Tanh_f32/100  2.27µs ± 1%             0.14µs ± 5%  -93.89%        (p=0.000 n=46+49)
BM_mlir_Tanh_f32/1k   22.9µs ± 1%              0.8µs ± 4%  -96.67%        (p=0.000 n=30+42)
BM_mlir_Tanh_f32/10k   230µs ± 0%                7µs ± 3%  -96.88%        (p=0.000 n=37+55)
```

This approximations is based on Eigen::generic_fast_tanh function

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D96739
2021-02-19 12:43:36 -08:00
Alex Zinenko 12875ed976 [mlir] generate enum translation functions with unused attribute
The functions translating enums to LLVM IR are generated in a single
file included in many places, not all of which use all translations.
Generate functions with "unused" attribute to silence compiler warnings.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D96880
2021-02-18 09:44:40 +01:00
Alex Zinenko ce8f10d6cb [mlir] Simplify ModuleTranslation for LLVM IR
A series of preceding patches changed the mechanism for translating MLIR to
LLVM IR to use dialect interface with delayed registration. It is no longer
necessary for specific dialects to derive from ModuleTranslation. Remove all
virtual methods from ModuleTranslation and factor out the entry point to be a
free function.

Also perform some cleanups in ModuleTranslation internals.

Depends On D96774

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D96775
2021-02-16 18:42:52 +01:00
Alex Zinenko 1d6f08e61d [mlir] use new cmake targets in mlir-*-runner 2021-02-15 15:04:00 +01:00
Alex Zinenko 176379e0c8 [mlir] Use the interface-based translation for LLVM "intrinsic" dialects
Port the translation of five dialects that define LLVM IR intrinsics
(LLVMAVX512, LLVMArmNeon, LLVMArmSVE, NVVM, ROCDL) to the new dialect
interface-based mechanism. This allows us to remove individual translations
that were created for each of these dialects and just use one common
MLIR-to-LLVM-IR translation that potentially supports all dialects instead,
based on what is registered and including any combination of translatable
dialects. This removal was one of the main goals of the refactoring.

To support the addition of GPU-related metadata, the translation interface is
extended with the `amendOperation` function that allows the interface
implementation to post-process any translated operation with dialect attributes
from the dialect for which the interface is implemented regardless of the
operation's dialect. This is currently applied to "kernel" functions, but can
be used to construct other metadata in dialect-specific ways without
necessarily affecting operations.

Depends On D96591, D96504

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D96592
2021-02-15 14:43:07 +01:00
Fangrui Song 3643828b51 [CMake][mlir] Fix mlir-linalg-ods-gen/CMakeLists.txt after D96645 2021-02-13 14:16:38 -08:00
daquexian 6e31a6b7c2 fix linalg ods gen cross compiling like other gen executables
Signed-off-by: daquexian <daquexian566@gmail.com>

Reviewed By: vinograd47

Differential Revision: https://reviews.llvm.org/D96645
2021-02-13 19:17:46 +00:00
Praveen Narayanan a65fb1916c Add a "kind" attribute to ContractionOp and OuterProductOp.
Currently, vector.contract joins the intermediate result and the accumulator
argument (of ranks K) using summation. We desire more joining operations ---
such as max --- to help vector.contract express reductions. This change extends
Vector_ContractionOp to take an optional attribute (called "kind", of enum type
CombiningKind) specifying the joining operation to be add/mul/min/max for int/fp
, and and/or/xor for int only. By default this attribute has value "add".

To implement this we also need to extend vector.outerproduct, since
vector.contract gets transformed to vector.outerproduct (and that to
vector.fma). The extension for vector.outerproduct is also an optional kind
attribute that uses the same enum type and possible values. The default is
"add". In case of max/min we transform vector.outerproduct to a combination of
compare and select.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D93280
2021-02-12 20:23:59 +00:00
Mehdi Amini aa4e466caa [mlir][Linalg] Improve region support in Linalg ops
This revision takes advantage of the newly extended `ref` directive in assembly format
to allow better region handling for LinalgOps. Specifically, FillOp and CopyOp now build their regions explicitly which allows retiring older behavior that relied on specific op knowledge in both lowering to loops and vectorization.

This reverts commit 3f22547fd1 and reland 973e133b76 with a workaround for
a gcc bug that does not accept lambda default parameters:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59949

Differential Revision: https://reviews.llvm.org/D96598
2021-02-12 19:11:24 +00:00
Mehdi Amini 3f22547fd1 Revert "[mlir][Linalg] Improve region support in Linalg ops."
This reverts commit 973e133b76.

It triggers an issue in gcc5 that require investigation, the build is
broken with:

/tmp/ccdpj3B9.s: Assembler messages:
/tmp/ccdpj3B9.s:5821: Error: symbol `_ZNSt17_Function_handlerIFvjjEUljjE2_E9_M_invokeERKSt9_Any_dataOjS6_' is already defined
/tmp/ccdpj3B9.s:5860: Error: symbol `_ZNSt14_Function_base13_Base_managerIUljjE2_E10_M_managerERSt9_Any_dataRKS3_St18_Manager_operation' is already defined
2021-02-12 18:15:51 +00:00
Alex Zinenko 66900b3eae [mlir] Use dialect interfaces to translate OpenMP dialect to LLVM IR
Migrate the translation of the OpenMP dialect operations to LLVM IR to the new
dialect-based mechanism.

Depends On D96503

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D96504
2021-02-12 18:37:47 +01:00
Alex Zinenko b77bac0572 [mlir] Introduce dialect interfaces for translation to LLVM IR
The existing approach to translation to the LLVM IR relies on a single
translation supporting the base LLVM dialect, extensible through inheritance to
support intrinsic-based dialects also derived from LLVM IR such as NVVM and
AVX512. This approach does not scale well as it requires additional
translations to be created for each new intrinsic-based dialect and does not
allow them to mix in the same module, contrary to the rest of the MLIR
infrastructure. Furthermore, OpenMP translation ingrained itself into the main
translation mechanism.

Start refactoring the translation to LLVM IR to operate using dialect
interfaces. Each dialect that contains ops translatable to LLVM IR can
implement the interface for translating them, and the top-level translation
driver can operate on interfaces without knowing about specific dialects.
Furthermore, the delayed dialect registration mechanism allows one to avoid a
dependency on LLVM IR in the dialect that is translated to it by implementing
the translation as a separate library and only registering it at the client
level.

This change introduces the new mechanism and factors out the translation of the
"main" LLVM dialect. The remaining dialects will follow suit.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D96503
2021-02-12 17:49:44 +01:00
Nicolas Vasilache 973e133b76 [mlir][Linalg] Improve region support in Linalg ops.
This revision takes advantage of the newly extended `ref` directive in assembly format
to allow better region handling for LinalgOps. Specifically, FillOp and CopyOp now build their regions explicitly which allows retiring older behavior that relied on specific op knowledge in both lowering to loops and vectorization.

Differential Revision: https://reviews.llvm.org/D96598
2021-02-12 14:51:03 +00:00
Alex Zinenko 0881a4f1bf [mlir] make ModuleTranslation mapping fields private
ModuleTranslation contains multiple fields that keep track of the mappings
between various MLIR and LLVM IR components. The original ModuleTranslation
extension model was based on inheritance, with these fields being protected and
thus accessible in the ModuleTranslation and derived classes. The
inheritance-based model doesn't scale to translation of more than one derived
dialect and will be progressively replaced with a more flexible one based on
dialect interfaces and a translation state that is separate from
ModuleTranslation. This change prepares the replacement by making the mappings
private and providing public methods to access them.

Depends On D96436

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D96437
2021-02-11 14:50:49 +01:00
Alex Zinenko 9a08f760fe [mlir] Make JitRunnerMain main take a DialectRegistry
Historically, JitRunner has been registering all available dialects with the
context and depending on them without the real need. Make it take a registry
that contains only the dialects that are expected in the input and stop linking
in all dialects.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D96436
2021-02-11 14:50:48 +01:00
Alex Zinenko 2996a8d675 [mlir] avoid exposing mutable DialectRegistry from MLIRContext
MLIRContext allows its users to access directly to the DialectRegistry it
contains. While sometimes useful for registering additional dialects on an
already existing context, this breaks the encapsulation by essentially giving
raw accesses to a part of the context's internal state. Remove this mutable
access and instead provide a method to append a given DialectRegistry to the
one already contained in the context. Also provide a shortcut mechanism to
construct a context from an already existing registry, which seems to be a
common use case in the wild. Keep read-only access to the registry contained in
the context in case it needs to be copied or used for constructing another
context.

With this change, DialectRegistry is no longer concerned with loading the
dialects and deciding whether to invoke delayed interface registration. Loading
is concentrated in the MLIRContext, and the functionality of the registry
better reflects its name.

Depends On D96137

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D96331
2021-02-10 12:07:34 +01:00
Andrew Pritchard 018645b81b Fix side-effect detection in LLVMIRIntrinsicGen.
Previously it reported an op had side-effects iff it declared that it
didn't have any side-effects.  This had the undesirable result that
canonicalization would always delete any intrinsic calls that did memory
stores and returned void.

Reviewed By: ftynse, mehdi_amini

Differential Revision: https://reviews.llvm.org/D96369
2021-02-10 00:48:16 +00:00
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 b9c876bd7e [mlir] Add initial support for an alias analysis framework in MLIR
This revision adds a new `AliasAnalysis` class that represents the main alias analysis interface in MLIR. The purpose of this class is not to hold the aliasing logic itself, but to provide an interface into various different alias analysis implementations. As it evolves this should allow for users to plug in specialized alias analysis implementations for their own needs, and have them immediately usable by other analyses and transformations.

This revision also adds an initial simple generic alias, LocalAliasAnalysis, that provides support for performing stateless local alias queries between values. This class is similar in scope to LLVM's BasicAA.

Differential Revision: https://reviews.llvm.org/D92343
2021-02-09 14:21:27 -08:00
Lei Zhang 4c640e49c9 [mlir][linalg] Verify indexing map required attributes
Indexing maps for named ops can reference attributes so that
we can synthesize the indexing map dynamically. This supports
cases like strides for convolution ops. However, it does cause
an issue: now the indexing_maps() function call is dependent
on those attributes.

Linalg ops inherit LinalgOpInterfaceTraits, which calls
verifyStructuredOpInterface() to verify the interface.
verifyStructuredOpInterface() further calls indexing_maps().
Note that trait verification is done before the op itself,
where ODS generates the verification for those attributes.
So we can have indexing_maps() referencing non-existing or
invalid attribute, before the ODS-generated verification
kick in.

There isn't a dependency handling mechansim for traits.
This commit adds new interface methods to query whether an
op hasDynamicIndexingMaps() and then perform
verifyIndexingMapRequiredAttributes() in
verifyStructuredOpInterface() to handle the dependency issue.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D96297
2021-02-09 08:48:29 -05:00
Tres Popp c2c83e97c3 Revert "Revert "Reorder MLIRContext location in BuiltinAttributes.h""
This reverts commit 511dd4f438 along with
a couple fixes.

Original message:
Now the context is the first, rather than the last input.

This better matches the rest of the infrastructure and makes
it easier to move these types to being declaratively specified.

Phabricator: https://reviews.llvm.org/D96111
2021-02-08 10:39:58 +01:00
Tres Popp 511dd4f438 Revert "Reorder MLIRContext location in BuiltinAttributes.h"
This reverts commit 7827753f98.
2021-02-08 09:32:42 +01:00
Tres Popp 7827753f98 Reorder MLIRContext location in BuiltinAttributes.h
Now the context is the first, rather than the last input.

This better matches the rest of the infrastructure and makes
it easier to move these types to being declaratively specified.

Differential Revision: https://reviews.llvm.org/D96111
2021-02-08 09:28:09 +01:00
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
Lei Zhang 63dc26450b Revert "[mlir][ODS] Use StringLiteral instead of StringRef when applicable"
This reverts commit 953086ddbb because
it breaks GCC 5 build:

  error: could not convert '(const char*)""' from 'const char*' to 'llvm::StringLiteral'
     static ::llvm::StringLiteral getDialectNamespace() { return ""; }
2021-02-04 13:59:37 -05:00
Vladislav Vinogradov 953086ddbb [mlir][ODS] Use StringLiteral instead of StringRef when applicable
Use `StringLiteral` for function return type if it is known to return
constant string literals only.

This will make it visible to API users, that such values can be safely
stored, since they refers to constant data, which will never be deallocated.

`StringRef` is general is not safe to store for a long term,
since it might refer to temporal data allocated in heap.

Reviewed By: mehdi_amini, bkramer

Differential Revision: https://reviews.llvm.org/D95945
2021-02-04 17:35:15 +00:00
Nicolas Vasilache e4a503a26d [mlir][Linalg] Introduce a ContractionOpInterface
This revision takes advantage of recent extensions to vectorization to refactor contraction detection into a bona fide Linalg interface.
The mlit-linalg-ods-gen parser is extended to support adding such interfaces.
The detection that was originally enabling vectorization is refactored to serve as both a test on a generic LinalgOp as well as to verify ops that declare to conform to that interface.

This is plugged through Linalg transforms and strategies but it quickly becomes evident that the complexity and rigidity of the C++ class based templating does not pay for itself.
Therefore, this revision changes the API for vectorization patterns to get rid of templates as much as possible.
Variadic templates are relegated to the internals of LinalgTransformationFilter as much as possible and away from the user-facing APIs.

It is expected other patterns / transformations will follow the same path and drop as much C++ templating as possible from the class definition.

Differential revision: https://reviews.llvm.org/D95973
2021-02-04 16:53:24 +00:00
Nicolas Vasilache 1029c82c1e [mlir][Linalg] NFC - Extract a standalone LinalgInterfaces
This separation improves the layering and paves the way for more interfaces coming up in the future.

Differential revision: https://reviews.llvm.org/D95941
2021-02-04 07:19:38 +00:00
Christian Sigg 8d73bee4ed [mlir] Add gpu async integration test.
Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D94421
2021-02-03 21:45:23 +01:00
Christian Sigg 4a35941dbd Delete CUDA context after linking device code.
Differential Revision: https://reviews.llvm.org/D95857
2021-02-03 20:10:12 +01:00
Christian Sigg 8a43ec7faa Set GPU context before {cu,hip}MemHostRegister.
Differential Revision: https://reviews.llvm.org/D95856
2021-02-03 20:00:36 +01:00
Vladislav Vinogradov f1bdf9fa9b [mlir][NFC] Use explicit `mlir` namespace in generated code
This makes the generated code independent from actual namespace of its users.

Reviewed By: rriddle

Differential Revision: https://reviews.llvm.org/D95520
2021-02-02 18:24:43 +00:00
MaheshRavishankar 342d4662e1 [mlir] Add custom directive hooks for printing mixed integer or value operands.
Add printer and parser hooks for a custom directive that allows
parsing and printing of idioms that can represent a list of values
each of which is either an integer or an SSA value. For example in

`subview %source[%offset_0, 1] [4, %size_1] [%stride_0, 3]`

each of the list (which represents offset, size and strides) is a mix
of either statically know integer values or dynamically computed SSA
values. Since this is used in many places adding a custom directive to
parse/print this idiom allows using assembly format on operations
which use this idiom.

Differential Revision: https://reviews.llvm.org/D95773
2021-02-01 19:03:49 -08:00
Christian Sigg a4b7d52f3a [mlir] Fix missing null termination in cuLinkAddData argument.
Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D95679
2021-02-01 09:32:50 +01:00
MaheshRavishankar 98835e3d98 [mlir][Linalg] Enable TileAndFusePattern to work with tensors.
Differential Revision: https://reviews.llvm.org/D94531
2021-01-28 14:13:01 -08:00
Christian Sigg 5bdc771fc9 [mlir] Make cuda/rocm-runtime-wrappers not depend on LLVMSupport.
Depending on the headers only is fine, but we do not want to use any symbols from LLVMSupport. If we do, static registration of cl options is linked in as well, and loading multiple such libraries in the cuda/rocm-runner fails because the same cl options are registered multiple times.

The cuda/rocm-runners also depend on LLVMSupport, so one could think that already loading a single such library would fail. It does not because the map of cl options is not shared between the runner and the loaded libraries (but it is shared across all loaded libraries, presumably because it has external linkage, in contrast to the static registration which has internal linkage).

This change is a preparation step for dynamically loading the mlir_async_runtime.so and cuda-runtime-wrappers.so in the same test. The async runtime depends on LLVMSupport in a more fundamental way (llvm::ThreadPool), and as explained above there can only be one.

This change also switches to add_mlir_library to make it consistent with the other runner_utils libraries.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D95613
2021-01-28 17:25:01 +01:00
Christian Sigg 8262cd8a0e [mlir] Set CUDA/ROCm context before creating resources.
The current context is thread-local state, and in preparation of GPU async execution (on multiple threads) we need to set the context before calling API that create resources.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D94495
2021-01-26 19:07:06 +01:00
Stella Laurenzo fd226c9b02 [mlir][Python] Roll up of python API fixes.
* As discussed, fixes the ordering or (operands, results) -> (results, operands) in various `create` like methods.
* Fixes a syntax error in an ODS accessor method.
* Removes the linalg example in favor of a test case that exercises the same.
* Fixes FuncOp visibility to properly use None instead of the empty string and defaults it to None.
* Implements what was documented for requiring that trailing __init__ args `loc` and `ip` are keyword only.
* Adds a check to `InsertionPoint.insert` so that if attempting to insert past the terminator, an exception is raised telling you what to do instead. Previously, this would crash downstream (i.e. when trying to print the resultant module).
* Renames `_ods_build_default` -> `build_generic` and documents it.
* Removes `result` from the list of prohibited words and for single-result ops, defaults to naming the result `result`, thereby matching expectations and what is already implemented on the base class.
* This was intended to be a relatively small set of changes to be inlined with the broader support for ODS generating the most specific builder, but it spidered out once actually testing various combinations, so rolling up separately.

Differential Revision: https://reviews.llvm.org/D95320
2021-01-24 19:02:59 -08:00
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
Mehdi Amini 922b26cde4 Add Python bindings for the builtin dialect
This includes some minor customization for FuncOp and ModuleOp.

Differential Revision: https://reviews.llvm.org/D95022
2021-01-21 22:44:44 +00:00
Christian Sigg bd3a387ee7 Revert [mlir] Link mlir_runner_utils statically into cuda/rocm-runtime-wrappers (cf50f4f764)
There are cmake failures that I do not know how to fix.

Differential Revision: https://reviews.llvm.org/D95162
2021-01-21 22:38:59 +01:00
River Riddle 825c2b4a41 [mlir][OpFormatGen] Fix incorrect kind used for RegionsDirective
I attempted to write a test case for this, but the situations in which the kind is used for RegionDirective and ResultsDirective have zero overlap; meaning that there isn't a situation in which sharing the kind creates a conflict.

Differential Revision: https://reviews.llvm.org/D94988
2021-01-20 16:50:59 -08:00
Tobias Gysi 4c1eaf26ae [mlir] fix the rocm runtime wrapper to account for cuda / rocm api differences
The patch adapts the rocm runtime wrapper due to subtle differences between the cuda and the rocm/hip runtime api.

Reviewed By: csigg

Differential Revision: https://reviews.llvm.org/D95027
2021-01-20 18:48:32 +01:00
Christian Sigg cf50f4f764 [mlir] Link mlir_runner_utils statically into cuda/rocm-runtime-wrappers.
The runtime-wrappers depend on LLVMSupport, pulling in static initialization code (e.g. command line arguments). Dynamically loading multiple such libraries results in ODR violoations.

So far this has not been an issue, but in D94421, I would like to load both the async-runtime and the cuda-runtime-wrappers as part of a cuda-runner integration test. When doing this, code that asserts that an option category is only registered once fails (note that I've only experienced this in Google's bazel where the async-runtime depends on LLVMSupport, but a similar issue would happen in cmake if more than one runtime-wrapper starts to depend on LLVMSupport).

The underlying issue is that we have a mix of static and dynamic linking. If all dependencies were loaded as shared objects (i.e. if LLVMSupport was linked dynamically to the runtime wrappers), each dependency would only get loaded once. However, linking dependencies dynamically would require special attention to paths (one could dynamically load the dependencies first given explicit paths). The simpler approach seems to be to link all dependencies statically into a single shared object.

This change basically applies the same logic that we have in the c_runner_utils: we have a shared object target that can be loaded dynamically, and we have a static library target that can be linked to other runtime-wrapper shared object targets.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D94399
2021-01-20 12:10:16 +01:00
Stella Laurenzo 894d88a759 [mlir][python] Add facility for extending generated python ODS.
* This isn't exclusive with other mechanisms for more ODS centric op definitions, but based on discussions, we feel that we will always benefit from a python escape hatch, and that is the most natural way to write things that don't fit the mold.
* I suspect this facility needs further tweaking, and once it settles, I'll document it and add more tests.
* Added extensions for linalg, since it is unusable without them and continued to evolve my e2e example.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D94752
2021-01-19 13:20:26 -08:00
Stella Laurenzo 71b6b010e6 [mlir][python] Factor out standalone OpView._ods_build_default class method.
* This allows us to hoist trait level information for regions and sized-variadic to class level attributes (_ODS_REGIONS, _ODS_OPERAND_SEGMENTS, _ODS_RESULT_SEGMENTS).
* Eliminates some splicey python generated code in favor of a native helper for it.
* Makes it possible to implement custom, variadic and region based builders with one line of python, without needing to manually code access to the segment attributes.
* Needs follow-on work for region based callbacks and support for SingleBlockImplicitTerminator.
* A follow-up will actually add ODS support for generating custom Python builders that delegate to this new method.
* Also includes the start of an e2e sample for constructing linalg ops where this limitation was discovered (working progressively through this example and cleaning up as I go).

Differential Revision: https://reviews.llvm.org/D94738
2021-01-19 09:29:57 -08:00
Mehdi Amini 7dadcd02d6 Fix a few GCC compiler warnings (NFC) 2021-01-19 06:00:04 +00:00
Vladislav Vinogradov aca240b4f6 [mlir] Fix cross-compilation (Linalg ODS gen)
Use cross-compilation approach for `mlir-linalg-ods-gen` application
similar to TblGen tools.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D94598
2021-01-18 11:57:55 +01:00
Lei Zhang 0acc260b57 [mlir][linalg] Support generating builders for named op attributes
This commit adds support to generate an additional builder for
each named op that has attributes. This gives better experience
when creating the named ops.

Along the way adds support for i64.

Reviewed By: hanchung

Differential Revision: https://reviews.llvm.org/D94733
2021-01-15 09:00:30 -05:00
River Riddle 93592b726c [mlir][OpFormatGen] Format enum attribute cases as keywords when possible
In the overwhelmingly common case, enum attribute case strings represent valid identifiers in MLIR syntax. This revision updates the format generator to format as a keyword in these cases, removing the need to wrap values in a string. The parser still retains the ability to parse the string form, but the printer will use the keyword form when applicable.

Differential Revision: https://reviews.llvm.org/D94575
2021-01-14 11:35:49 -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
Lei Zhang 6b9fa8a50d [mlir][linalg] Add docstring support for named op spec
Depends on D94335

Reviewed By: nicolasvasilache, hanchung

Differential Revision: https://reviews.llvm.org/D94548
2021-01-14 09:57:56 -05:00
Lei Zhang 3bc7555ffa [mlir][linalg] Use attributes in named ops' indexing maps
This commit adds support for parsing attribute uses in indexing
maps. These attribute uses are represented as affine symbols in
the resultant indexing maps because we can only know their
concrete value (which are coming from op attributes and are
constants) for specific op instances. The `indxing_maps()`
calls are synthesized to read these attributes and create affine
constants to replace the placeholder affine symbols and simplify.

Depends on D94240

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D94335
2021-01-13 10:04:49 -05:00
Lei Zhang 8349fa0fdd [mlir][spirv] NFC: split deserialization into multiple source files
This avoids large source files and gives a better structure. It also
allows leveraging compilation parallelism.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D94360
2021-01-12 11:21:03 -05:00
Lei Zhang 4086072f8a Reland "[mlir][linalg] Support parsing attributes in named op spec"
With this, now we can specify a list of attributes on named ops
generated from the spec. The format is defined as

```
attr-id ::= bare-id (`?`)?
attr-typedef ::= type (`[` `]`)?
attr-def ::= attr-id `:` attr-typedef

tc-attr-def ::= `attr` `(` attr-def-list `)`
tc-def ::= `def` bare-id
  `(`tensor-def-list`)` `->` `(` tensor-def-list`)`
  (tc-attr-def)?
```

For example,

```
ods_def<SomeCppOp>
def some_op(...) -> (...)
attr(
  f32_attr: f32,
  i32_attr: i32,
  array_attr : f32[],
  optional_attr? : f32
)
```

where `?` means optional attribute and `[]` means array type.

Reviewed By: hanchung, nicolasvasilache

Differential Revision: https://reviews.llvm.org/D94240
2021-01-12 10:57:46 -05:00
Valentin Clement 0bd9a13691 [mlir][openacc] Use TableGen information for default enum
Use TableGen and information in ACC.td for the Default enum in the OpenACC dialect.
This patch generalize what was done for OpenMP for directives.

Follow up patch after D93576

Reviewed By: kiranchandramohan

Differential Revision: https://reviews.llvm.org/D93710
2021-01-12 09:42:42 -05:00
Mehdi Amini 110775809a Revert "[mlir][linalg] Support parsing attributes in named op spec"
This reverts commit df86f15f0c.

The gcc-5 build was broken by this change:

  mlir/tools/mlir-linalg-ods-gen/mlir-linalg-ods-gen.cpp:1275:77:   required from here
  /usr/include/c++/5/ext/new_allocator.h:120:4: error: no matching function for call to 'std::pair<const std::__cxx11::basic_string<char>, {anonymous}::TCParser::RegisteredAttr>::pair(llvm::StringRef&, {anonymous}::TCParser::RegisteredAttr'
2021-01-11 20:43:42 +00:00
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 2074177301 [mlir][ODS] Add a C++ abstraction for OpBuilders
This removes the need for OpDefinitionsGen to use raw tablegen API, and will also
simplify adding builders to TypeDefs as well.

Differential Revision: https://reviews.llvm.org/D94273
2021-01-11 12:06:22 -08:00
Lei Zhang df86f15f0c [mlir][linalg] Support parsing attributes in named op spec
With this, now we can specify a list of attributes on named ops
generated from the spec. The format is defined as

```
attr-id ::= bare-id (`?`)?
attr-typedef ::= type (`[` `]`)?
attr-def ::= attr-id `:` attr-typedef

tc-attr-def ::= `attr` `(` attr-def-list `)`
tc-def ::= `def` bare-id
  `(`tensor-def-list`)` `->` `(` tensor-def-list`)`
  (tc-attr-def)?
```

For example,

```
ods_def<SomeCppOp>
def some_op(...) -> (...)
attr(
  f32_attr: f32,
  i32_attr: i32,
  array_attr : f32[],
  optional_attr? : f32
)
```

where `?` means optional attribute and `[]` means array type.

Reviewed By: hanchung, nicolasvasilache

Differential Revision: https://reviews.llvm.org/D94240
2021-01-11 09:05:20 -05:00
Mehdi Amini f02e61a8b9 Fix MLIR DRR matching when attributes are interleaved with operands
The ODSOperand indexing should ignore the attributes.

Differential Revision: https://reviews.llvm.org/D94281
2021-01-08 03:18:26 +00:00
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
River Riddle e0a93e4b65 [mlir][ODS] Rename several uses of 'description' to 'summary'
Right now constraint/predicate traits/etc. use their "description" field as a one line human readable string. This breaks the current convention, by which a "description" may be multi-line. This revision renames the "description" field in these cases to "summary" which matches what the string is actually used as. This also unbreaks the use of TypeDefs(and eventually AttrDefs) in conjunction with existing type constraint facilities like `Optional`.

Differential Revision: https://reviews.llvm.org/D94133
2021-01-06 14:18:58 -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
Tres Popp cbda2cba4f [mlir] Fully specify removeAttr return type
This was added without full specification like other generated methods.
This then leads to other downstream dialects failing to compile the
generated code when they are not in the mlir namespace.

Differential Revision: https://reviews.llvm.org/D94132
2021-01-06 00:52:35 +01:00
Felipe de Azevedo Piovezan 86d68e2885 [mlir] Gen removeAttr methods with tablegen
If an operation defines an optional attribute (OptionalAttr or
UnitAttr), transformations may wish to remove these attributes while
maintaining invariants established by the operation. Currently, the only
way to do this is by calling `Operation::removeAttr("attrName")`, which
requires developers to know the exact name of the attribute used by
table-gen. Furthermore, if the attribute name changes, this won't be
detected at compile time. Instead, `removeAttr` would return an empty
attribute and no errors would be raised, unless the caller checks for
the returned value.

This patch adds table gen support for generating `remove<AttrName>Attr`
methods for OptionalAttributes defined by operations.

Implementation choice: to preserve camelCase for the method's name, the
first character of an attribute called `myAttr` is changed to upper case
in order to preserve the coding style, so the final method would be
called `removeMyAttr`.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93903
2021-01-05 18:48:09 +00:00
Dan Zheng 7afd5cfbc7 [NFC] Fix -Wrange-loop-analysis warnings.
Remove unnecessary `&` from loop variables.

Fix warnings: "loop variable is always a copy because the range does not
return a reference".

```
[240/2862] Building CXX object tools/mlir/tools/mlir-tblgen/CMakeFiles/mlir-tblgen.dir/TypeDefGen.cpp.o
llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:50:25: warning: loop variable 'typeDef' is always a copy because the range of type 'llvm::iterator_range<llvm::mapped_iterator<std::__1::__wrap_iter<llvm::Record **>, (lambda at llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:40:16), mlir::tblgen::TypeDef> >' does not return a reference [-Wrange-loop-analysis]
    for (const TypeDef &typeDef : defs)
                        ^
llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:50:10: note: use non-reference type 'mlir::tblgen::TypeDef'
    for (const TypeDef &typeDef : defs)
         ^~~~~~~~~~~~~~~~~~~~~~~~
llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:64:23: warning: loop variable 'typeDef' is always a copy because the range of type 'llvm::iterator_range<llvm::mapped_iterator<std::__1::__wrap_iter<llvm::Record **>, (lambda at llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:40:16), mlir::tblgen::TypeDef> >' does not return a reference [-Wrange-loop-analysis]
  for (const TypeDef &typeDef : defs)
                      ^
llvm-project/mlir/tools/mlir-tblgen/TypeDefGen.cpp:64:8: note: use non-reference type 'mlir::tblgen::TypeDef'
  for (const TypeDef &typeDef : defs)
       ^~~~~~~~~~~~~~~~~~~~~~~~
2 warnings generated.

[1934/2862] Building CXX object tools...Files/toyc-ch4.dir/mlir/MLIRGen.cpp.o
llvm-project/mlir/examples/toy/Ch4/mlir/MLIRGen.cpp:139:22: warning: loop variable 'name_value' is always a copy because the range of type 'detail::zippy<detail::zip_shortest, ArrayRef<unique_ptr<VariableExprAST, default_delete<VariableExprAST> > > &, MutableArrayRef<BlockArgument> >' does not return a reference [-Wrange-loop-analysis]
    for (const auto &name_value :
                     ^
llvm-project/mlir/examples/toy/Ch4/mlir/MLIRGen.cpp:139:10: note: use non-reference type 'std::__1::tuple<const std::__1::unique_ptr<toy::VariableExprAST, std::__1::default_delete<toy::VariableExprAST> > &, mlir::BlockArgument &>'
    for (const auto &name_value :
         ^~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.

[1940/2862] Building CXX object tools...Files/toyc-ch5.dir/mlir/MLIRGen.cpp.o
llvm-project/mlir/examples/toy/Ch5/mlir/MLIRGen.cpp:139:22: warning: loop variable 'name_value' is always a copy because the range of type 'detail::zippy<detail::zip_shortest, ArrayRef<unique_ptr<VariableExprAST, default_delete<VariableExprAST> > > &, MutableArrayRef<BlockArgument> >' does not return a reference [-Wrange-loop-analysis]
    for (const auto &name_value :
                     ^
llvm-project/mlir/examples/toy/Ch5/mlir/MLIRGen.cpp:139:10: note: use non-reference type 'std::__1::tuple<const std::__1::unique_ptr<toy::VariableExprAST, std::__1::default_delete<toy::VariableExprAST> > &, mlir::BlockArgument &>'
    for (const auto &name_value :
         ^~~~~~~~~~~~~~~~~~~~~~~~
1 warning generated.
```

Reviewed By: jpienaar

Differential Revision: https://reviews.llvm.org/D94003
2021-01-05 18:44:17 +00:00
Alex Zinenko c69c9e0f0f [mlir] Remove LLVMType, LLVM dialect types now derive Type directly
BEGIN_PUBLIC
[mlir] Remove LLVMType, LLVM dialect types now derive Type directly

This class has become a simple `isa` hook with no proper functionality.
Removing will allow us to eventually make the LLVM dialect type infrastructure
open, i.e., support non-LLVM types inside container types, which itself will
make the type conversion more progressive.

Introduce a call `LLVM::isCompatibleType` to be used instead of
`isa<LLVMType>`. For now, this is strictly equivalent.
END_PUBLIC

Depends On D93681

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93713
2021-01-05 17:36:54 +01:00
Stella Laurenzo 8a1f1a100c [mlir][python] Aggressively avoid name collisions in generated python ODS code.
* When porting npcomp to use these bindings, I ran into enough patterns of collisions that I decided to be somewhat draconian about not polluting the namespace.
* With these changes all of the npcomp dialects generate and pass what tests we have.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93920
2020-12-29 17:43:04 -08:00
Mehdi Amini 58ce477676 Fix DRR pattern when attributes and operands are interleaved and a dag subtree appears in the rewrite
This fixes an incorrect fatal error in TableGen. This code probably comes
from before attributes were allowed to interleave with operands in ODS.

Reviewed By: jpienaar

Differential Revision: https://reviews.llvm.org/D93915
2020-12-30 00:19:38 +00:00
Chris Lattner 9eb3e564d3 [ODS] Make the getType() method on a OneResult instruction return a specific type.
Implement Bug 46698, making ODS synthesize a getType() method that returns a
specific C++ class for OneResult methods where we know that class.  This eliminates
a common source of casts in things like:

   myOp.getType().cast<FIRRTLType>().getPassive()

because we know that myOp always returns a FIRRTLType.  This also encourages
op authors to type their results more tightly (which is also good for
verification).

I chose to implement this by splitting the OneResult trait into itself plus a
OneTypedResult trait, given that many things are using `hasTrait<OneResult>`
to conditionalize various logic.

While this changes makes many many ops get more specific getType() results, it
is generally drop-in compatible with the previous behavior because 'x.cast<T>()'
is allowed when x is already known to be a T.  The one exception to this is that
we need declarations of the types used by ops, which is why a couple headers
needed additional #includes.

I updated a few things in tree to remove the now-redundant `.cast<>`'s, but there
are probably many more than can be removed.

Differential Revision: https://reviews.llvm.org/D93790
2020-12-26 13:52:40 -08:00
Lei Zhang fc41777702 [mlir][spirv] De-template serialization
Previously for each op we generate a separate serialization
method for it. Those serialization methods duplicate the logic
of parsing operands/results/attributes and such.

This commit creates a generic method and let suitable op-specific
serialization method to call into it.

wc -l SPIRVSerialization.inc: before 8304; after: 5597 (So -2707)

Reviewed By: hanchung, ThomasRaoux

Differential Revision: https://reviews.llvm.org/D93535
2020-12-23 14:54:26 -05:00
Lei Zhang ae895ac4b9 [mlir][spirv] De-template deserialization
Previously for each op we generate a separate deserialization
method for it. Those deserialization methods duplicate the logic
of parsing operands/results/attributes and such.

This commit creates a generic method and let suitable op-specific
deserialization method to call into it.

wc -l SPIRVSerialization.inc: before 13290; after: 8304 (So -4986)

Reviewed By: hanchung, ThomasRaoux

Differential Revision: https://reviews.llvm.org/D93504
2020-12-23 14:45:46 -05:00
Lei Zhang 930c74f12d [mlir][spirv] NFC: rename SPIR-V conversion files for consistency
This commit renames various SPIR-V related conversion files for
consistency. It drops the "Convert" prefix to various files and
fixes various comment headers.

Reviewed By: hanchung, ThomasRaoux

Differential Revision: https://reviews.llvm.org/D93489
2020-12-23 14:36:46 -05:00
ergawy 1d0dc9be6d [MLIR][SPIRV] Add rewrite pattern to convert select+cmp into GLSL clamp.
Adds rewrite patterns to convert select+cmp instructions into clamp
instructions whenever possible. Support is added to convert:

- FOrdLessThan, FOrdLessThanEqual to GLSLFClampOp.
- SLessThan, SLessThanEqual to GLSLSClampOp.
- ULessThan, ULessThanEqual to GLSLUClampOp.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D93618
2020-12-23 15:47:19 +01:00
Christian Sigg df6cbd37f5 [mlir] Lower gpu.memcpy to GPU runtime calls.
Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D93204
2020-12-22 22:49:19 +01:00
Alex Zinenko 2f5569f6f6 [mlir] remove deprecated string-based OpBuilder from ODS
It has been deprecated with a warning for two months, removing.

Reviewed By: mehdi_amini

Differential Revision: https://reviews.llvm.org/D93623
2020-12-22 09:57:49 +01:00
nicolasvasilache b7ae1d3d2b [mlir][Linalg] Revisit the Linalg on tensors abstraction
This revision drops init_tensor arguments from Linalg on tensors and instead uniformizes the output buffers and output tensors to be consistent.
This significantly simplifies the usage of Linalg on tensors and is a stepping stone for
its evolution towards a mixed tensor and shape abstraction discussed in https://llvm.discourse.group/t/linalg-and-shapes/2421/19.

Differential Revision: https://reviews.llvm.org/D93469
2020-12-21 12:29:10 -08:00
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
Lei Zhang 0117865412 [mlir][spirv] NFC: Shuffle code around to better follow convention
This commit shuffles SPIR-V code around to better follow MLIR
convention. Specifically,

* Created IR/, Transforms/, Linking/, and Utils/ subdirectories and
  moved suitable code inside.
* Created SPIRVEnums.{h|cpp} for SPIR-V C/C++ enums generated from
  SPIR-V spec. Previously they are cluttered inside SPIRVTypes.{h|cpp}.
* Fixed include guards in various header files (both .h and .td).
* Moved serialization tests under test/Target/SPIRV.
* Renamed TableGen backend -gen-spirv-op-utils into -gen-spirv-attr-utils
  as it is only generating utility functions for attributes.

Reviewed By: mravishankar

Differential Revision: https://reviews.llvm.org/D93407
2020-12-17 11:03:26 -05:00
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 b3ee7f1f31 [mlir][OpDefGen] Add support for generating local functions for shared utilities
This revision adds a new `StaticVerifierFunctionEmitter` class that emits local static functions in the .cpp file for shared operation verification. This class deduplicates shared operation verification code by emitting static functions alongside the op definitions. These methods are local to the definition file, and are invoked within the operation verify methods. The first bit of shared verification is for the type constraints used when verifying operands and results. An example is shown below:

```
static LogicalResult localVerify(...) {
  ...
}

LogicalResult OpA::verify(...) {
  if (failed(localVerify(...)))
    return failure();
  ...
}

LogicalResult OpB::verify(...) {
  if (failed(localVerify(...)))
    return failure();
  ...
}
```

This allowed for saving >400kb of code size from a downstream TensorFlow project (~15% of MLIR code size).

Differential Revision: https://reviews.llvm.org/D91381
2020-12-14 14:21:30 -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 a1eb154421 [flang] Use mlir::OpState::operator->() to get to methods of mlir::Operation.
This is a preparation step to remove those methods from OpState.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D93194
2020-12-14 20:04:53 +01:00
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
Brian Gesiak 09b0e0884a [mlir] Print bad size in AttrSizedOperandSegments
When printing verification errors for ops with the incorrect number of
operand segments, print the required number as well as the actual
number. Split off from D93005.

Differential Revision: https://reviews.llvm.org/D93145
2020-12-12 13:12:31 -05:00
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
Rahul Joshi fe7fdcac87 [MLIR] Fix parseFunctionLikeOp() to fail parsing empty regions
- Change parseOptionalRegion to return an OptionalParseResult.
- Change parseFunctionLikeOp() to fail parsing if the function body was parsed but was
  empty.
- See https://llvm.discourse.group/t/funcop-parsing-bug/2164

Differential Revision: https://reviews.llvm.org/D91886
2020-12-04 09:09:59 -08:00
Rahul Joshi 245233423e [MLIR] Generate inferReturnTypes declaration using InferTypeOpInterface trait.
- Instead of hardcoding the parameters and return types of 'inferReturnTypes', use the
  InferTypeOpInterface trait to generate the method declaration.
- Fix InferTypeOfInterface to use fully qualified type for inferReturnTypes results.

Differential Revision: https://reviews.llvm.org/D92585
2020-12-04 09:05:53 -08:00
David Blaikie 30b1ae5916 [mlir] Make conversion functions inline instead of static to avoid -Wunused-function 2020-12-03 13:09:36 -08:00
Paul C. Anagnostopoulos 415fab6f67 [TableGen] Eliminate the 'code' type
Update the documentation.

Rework various backends that relied on the code type.

Differential Revision: https://reviews.llvm.org/D92269
2020-12-03 10:19:11 -05:00
Christian Sigg c4a0405902 Add `Operation* OpState::operator->()` to provide more convenient access to members of Operation.
Given that OpState already implicit converts to Operator*, this seems reasonable.

The alternative would be to add more functions to OpState which forward to Operation.

Reviewed By: rriddle, ftynse

Differential Revision: https://reviews.llvm.org/D92266
2020-12-02 15:46:20 +01:00
River Riddle abfd1a8b3b [mlir][PDL] Add support for PDL bytecode and expose PDL support to OwningRewritePatternList
PDL patterns are now supported via a new `PDLPatternModule` class. This class contains a ModuleOp with the pdl::PatternOp operations representing the patterns, as well as a collection of registered C++ functions for native constraints/creations/rewrites/etc. that may be invoked via the pdl patterns. Instances of this class are added to an OwningRewritePatternList in the same fashion as C++ RewritePatterns, i.e. via the `insert` method.

The PDL bytecode is an in-memory representation of the PDL interpreter dialect that can be efficiently interpreted/executed. The representation of the bytecode boils down to a code array(for opcodes/memory locations/etc) and a memory buffer(for storing attributes/operations/values/any other data necessary). The bytecode operations are effectively a 1-1 mapping to the PDLInterp dialect operations, with a few exceptions in cases where the in-memory representation of the bytecode can be more efficient than the MLIR representation. For example, a generic `AreEqual` bytecode op can be used to represent AreEqualOp, CheckAttributeOp, and CheckTypeOp.

The execution of the bytecode is split into two phases: matching and rewriting. When matching, all of the matched patterns are collected to avoid the overhead of re-running parts of the matcher. These matched patterns are then considered alongside the native C++ patterns, which rewrite immediately in-place via `RewritePattern::matchAndRewrite`,  for the given root operation. When a PDL pattern is matched and has the highest benefit, it is passed back to the bytecode to execute its rewriter.

Differential Revision: https://reviews.llvm.org/D89107
2020-12-01 15:05:50 -08:00
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
Ray (I-Jui) Sung ff2e22853f Don't count attributes when addressing operands.
Fixes out-of-bound access in generated nested DAG rewriter matching code.

Reviewed By: tpopp

Differential Revision: https://reviews.llvm.org/D92075
2020-12-01 01:21:36 +00:00
Nicolas Vasilache 78c7118746 [mlir] Make mlir-cpu-runner depend on native instead of X86 2020-11-30 15:11:34 +00:00
Nicolas Vasilache 047400ed82 [mlir][LLVMIR] Add support for InlineAsmOp
The InlineAsmOp mirrors the underlying LLVM semantics with a notable
exception: the embedded `asm_string` is not allowed to define or reference
any symbol or any global variable: only the operands of the op may be read,
written, or referenced.
Attempting to define or reference any symbol or any global behavior is
considered undefined behavior at this time.

The asm dialect syntax is currently specified with an integer (0 [default] for the "att dialect", 1 for the intel dialect) to circumvent the ODS limitation on string enums.

Translation to LLVM is provided and raises the fact that the asm constraints string must be well-formed with respect to in/out operands. No check is performed on the asm_string.

An InlineAsm instruction in LLVM is a special call operation to a function that is constructed on the fly.
It does not fit the current model of MLIR calls with symbols.
As a consequence, the current implementation constructs the function type in ModuleTranslation.cpp.
This should be refactored in the future.

The mlir-cpu-runner is augmented with the global initialization of the X86 asm parser to allow proper execution in JIT mode. Previously, only the X86 asm printer was initialized.

Differential revision: https://reviews.llvm.org/D92166
2020-11-30 08:32:02 +00:00
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 d9da4c3e73. 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 6dd9596b19.

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
Christian Sigg 5535696c38 [mlir] Add gpu.allocate, gpu.deallocate ops with LLVM lowering to runtime function calls.
The ops are very similar to the std variants, but support async GPU execution.

gpu.alloc does not currently support an alignment attribute, and the new ops do not have
canonicalizers/folders like their std siblings do.

Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D91698
2020-11-27 09:40:59 +01:00
Ulysse Beaugnon 1eded173a9 [MLIR] Fix TableGen generator for attribute interfaces.
Use the correct interface base type name when generating attribute interfaces
with TabeGen.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D92023
2020-11-24 14:06:35 +01:00
Alex Zinenko 029e199dbf [mlir] Make attributes mutable in Python bindings
Attributes represent additional data about an operation and are intended to be
modifiable during the lifetime of the operation. In the dialect-specific Python
bindings, attributes are exposed as properties on the operation class. Allow
for assigning values to these properties. Also support creating new and
deleting existing attributes through the generic "attributes" property of an
operation. Any validity checking must be performed by the op verifier after the
mutation, similarly to C++. Operations are not invalidated in the process: no
dangling pointers can be created as all attributes are owned by the context and
will remain live even if they are not used in any operation.

Introduce a Python Test dialect by analogy with the Test dialect and to avoid
polluting the latter with Python-specific constructs. Use this dialect to
implement a test for the attribute access and mutation API.

Reviewed By: stellaraccident, mehdi_amini

Differential Revision: https://reviews.llvm.org/D91652
2020-11-24 09:16:25 +01:00
MaheshRavishankar e65a5e5b00 [mlir][Linalg] Fuse sequence of Linalg operation (on buffers)
Enhance the tile+fuse logic to allow fusing a sequence of operations.

Make sure the value used to obtain tile shape is a
SubViewOp/SubTensorOp. Current logic used to get the bounds of loop
depends on the use of `getOrCreateRange` method on `SubViewOp` and
`SubTensorOp`. Make sure that the value/dim used to compute the range
is from such ops.  This fix is a reasonable WAR, but a btter fix would
be to make `getOrCreateRange` method be a method of `ViewInterface`.

Differential Revision: https://reviews.llvm.org/D90991
2020-11-23 10:30:51 -08:00
John Demme 95956c1c9a [MLIR] ODS typedef gen fixes & improvements
- Fixes bug 48242 point 3 crash.
- Makes the improvments from points 1 & 2.

https://bugs.llvm.org/show_bug.cgi?id=48262

```
   def RTLValueType : Type<CPred<"isRTLValueType($_self)">, "Type"> {
     string cppType = "::mlir::Type";
   }
```
Works now, but merely by happenstance. Parameters expects a `TypeParameter` class def or a string representing a c++ type but doesn't enforce it.

Reviewed By: lattner

Differential Revision: https://reviews.llvm.org/D91939
2020-11-22 16:06:14 -08:00
Mikhail Goncharov 0caa82e2ac Revert "[mlir][Linalg] Fuse sequence of Linalg operation (on buffers)"
This reverts commit f8284d21a8.

Revert "[mlir][Linalg] NFC: Expose some utility functions used for promotion."

This reverts commit 0c59f51592.

Revert "Remove unused isZero function"

This reverts commit 0f9f0a4046.

Change f8284d21 led to multiple failures in IREE compilation.
2020-11-20 13:12:54 +01:00
MaheshRavishankar f8284d21a8 [mlir][Linalg] Fuse sequence of Linalg operation (on buffers)
Enhance the tile+fuse logic to allow fusing a sequence of operations.

Differential Revision: https://reviews.llvm.org/D90991
2020-11-19 19:03:06 -08:00
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
Lei Zhang 9e39a5d9a6 [mlir][linalg] Start a named ops to generic ops pass
This commit starts a new pass and patterns for converting Linalg
named ops to generic ops. This enables us to leverage the flexbility
from generic ops during transformations. Right now only linalg.conv
is supported; others will be added when useful.

Reviewed By: nicolasvasilache

Differential Revision: https://reviews.llvm.org/D91357
2020-11-19 09:21:06 -05:00
Ji Kim 58ce4a8b11 [mlir][TableGen] Support intrinsics with multiple returns and overloaded operands.
For intrinsics with multiple returns where one or more operands are overloaded, the overloaded type is inferred from the corresponding field of the resulting struct, instead of accessing the result directly.

As such, the hasResult parameter of LLVM_IntrOpBase (and derived classes) is replaced with numResults. TableGen for intrinsics also updated to populate this field with the total number of results.

Reviewed By: ftynse

Differential Revision: https://reviews.llvm.org/D91680
2020-11-19 09:59:42 +01:00
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
Aart Bik eced4a8e6f [mlir] [sparse] start of sparse tensor compiler support
As discussed in https://llvm.discourse.group/t/mlir-support-for-sparse-tensors/2020
this CL is the start of sparse tensor compiler support in MLIR. Starting with a
"dense" kernel expressed in the Linalg dialect together with per-dimension
sparsity annotations on the tensors, the compiler automatically lowers the
kernel to sparse code using the methods described in Fredrik Kjolstad's thesis.

Many details are still TBD. For example, the sparse "bufferization" is purely
done locally since we don't have a global solution for propagating sparsity
yet. Furthermore, code to input and output the sparse tensors is missing.
Nevertheless, with some hand modifications, the generated MLIR can be
easily converted into runnable code already.

Reviewed By: nicolasvasilache, ftynse

Differential Revision: https://reviews.llvm.org/D90994
2020-11-17 13:10:42 -08:00
Alex Zinenko f3dab16dc7 [mlir] Add a _get_default_loc_context utility to Python bindings
This utility function is helpful for dialect-specific builders that need
to access the context through location, and the location itself may be
either provided as an argument or expected to be recovered from the
implicit location stack.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D91623
2020-11-17 17:55:47 +01:00
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
Alex Zinenko c5a6712f8c [mlir] Add basic support for attributes in ODS-generated Python bindings
In ODS, attributes of an operation can be provided as a part of the "arguments"
field, together with operands. Such attributes are accepted by the op builder
and have accessors generated.

Implement similar functionality for ODS-generated op-specific Python bindings:
the `__init__` method now accepts arguments together with operands, in the same
order as in the ODS `arguments` field; the instance properties are introduced
to OpView classes to access the attributes.

This initial implementation accepts and returns instances of the corresponding
attribute class, and not the underlying values since the mapping scheme of the
value types between C++, C and Python is not yet clear. Default-valued
attributes are not supported as that would require Python to be able to parse
C++ literals.

Since attributes in ODS are tightely related to the actual C++ type system,
provide a separate Tablegen file with the mapping between ODS storage type for
attributes (typically, the underlying C++ attribute class), and the
corresponding class name. So far, this might look unnecessary since all names
match exactly, but this is not necessarily the cases for non-standard,
out-of-tree attributes, which may also be placed in non-default namespaces or
Python modules. This also allows out-of-tree users to generate Python bindings
without having to modify the bindings generator itself. Storage type was
preferred over the Tablegen "def" of the attribute class because ODS
essentially encodes attribute _constraints_ rather than classes, e.g. there may
be many Tablegen "def"s in the ODS that correspond to the same attribute type
with additional constraints

The presence of the explicit mapping requires the change in the .td file
structure: instead of just calling the bindings generator directly on the main
ODS file of the dialect, it becomes necessary to create a new file that
includes the main ODS file of the dialect and provides the mapping for
attribute types. Arguably, this approach offers better separability of the
Python bindings in the build system as the main dialect no longer needs to know
that it is being processed by the bindings generator.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D91542
2020-11-17 11:47:37 +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
Sean Silva 7c62c6313b [mlir] Add DecomposeCallGraphTypes pass.
This replaces the old type decomposition logic that was previously mixed
into bufferization, and makes it easily accessible.

This also deletes TestFinalizingBufferize, because after we remove the type
decomposition, it doesn't do anything that is not already provided by
func-bufferize.

Differential Revision: https://reviews.llvm.org/D90899
2020-11-16 12:25:35 -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
Alex Zinenko f9265de8c6 [mlir] Generate Op builders for Python bindings
Add an ODS-backed generator of default builders. This currently does not
support operation with attribute arguments, for which the builder is
just ignored. Attribute support will be introduced separately for
builders and accessors.

Default builders are always generated with the same number of result and
operand groups as the ODS specification, i.e. one group per each operand
or result. Optional elements accept None but cannot be omitted. Variadic
groups accept iterable objects and cannot be replaced with a single
object.

For some operations, it is possible to infer the result type given the
traits, but most traits rely on inline pieces of C++ that we cannot
(yet) forward to Python bindings. Since the Ops where the inference is
possible (having the `SameOperandAndResultTypes` trait or
`TypeMatchesWith` without transform field) are a small minority, they
also require the result type to make the builder syntax more consistent.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D91190
2020-11-12 11:29:23 +01:00
Eugene Zhulenev bb0d5f767d [mlir] Add NumberOfExecutions analysis + update RegionBranchOpInterface interface to query number of region invocations
Implements RFC discussed in: https://llvm.discourse.group/t/rfc-operationinstancesinterface-or-any-better-name/2158/10

Reviewed By: silvas, ftynse, rriddle

Differential Revision: https://reviews.llvm.org/D90922
2020-11-11 01:43:17 -08:00
Christian Sigg 3307a7c046 [mlir][gpu] Add missing initialization of gpu runtime wrappers.
Reviewed By: herhut

Differential Revision: https://reviews.llvm.org/D91148
2020-11-11 10:34:21 +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
Mehdi Amini dc43f78565 Add basic Python bindings for the PassManager and bind libTransforms
This only exposes the ability to round-trip a textual pipeline at the
moment.
To exercise it, we also bind the libTransforms in a new Python extension. This
does not include any interesting bindings, but it includes all the
mechanism to add separate native extensions and load them dynamically.
As such passes in libTransforms are only registered after `import
mlir.transforms`.
To support this global registration, the TableGen backend is also
extended to bind to the C API the group registration for passes.

Reviewed By: stellaraccident

Differential Revision: https://reviews.llvm.org/D90819
2020-11-10 19:55:21 +00:00