llvm-project/mlir/docs/Tutorials
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
..
Toy [ODS] Make the getType() method on a OneResult instruction return a specific type. 2020-12-26 13:52:40 -08:00
CreatingADialect.md Remove `Ops` suffix from dialect library names 2020-09-30 18:00:44 -07:00
DefiningAttributesAndTypes.md [mlir] Update the documentation for defining types 2020-08-18 18:02:20 -07:00
QuickstartRewrites.md [mlir][Linalg] Add named Linalg ops on tensor to buffer support. 2020-10-12 11:20:23 +00:00
UnderstandingTheIRStructure.md Add a doc/tutorial on traversing the IR 2020-09-08 00:07:03 +00:00
_index.md [mlir] Add tutorial index.md pages 2020-09-21 15:50:48 -07:00