Commit Graph

8 Commits

Author SHA1 Message Date
Chris Lattner 456ad6a8e0 Standardize naming of statements -> instructions, revisting the code base to be
consistent and moving the using declarations over.  Hopefully this is the last
truly massive patch in this refactoring.

This is step 21/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227178245
2019-03-29 14:44:30 -07:00
Chris Lattner 5187cfcf03 Merge Operation into OperationInst and standardize nomenclature around
OperationInst.  This is a big mechanical patch.

This is step 16/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227093712
2019-03-29 14:42:23 -07:00
Chris Lattner 3f190312f8 Merge SSAValue, CFGValue, and MLValue together into a single Value class, which
is the new base of the SSA value hierarchy.  This CL also standardizes all the
nomenclature and comments to use 'Value' where appropriate.  This also eliminates a large number of cast<MLValue>(x)'s, which is very soothing.

This is step 11/n towards merging instructions and statements, NFC.

PiperOrigin-RevId: 227064624
2019-03-29 14:40:06 -07:00
Chris Lattner 3f2530cdf5 Split "rewrite" functionality out of Pattern into a new RewritePattern derived
class.  This change is NFC, but allows for new kinds of patterns, specifically
LegalizationPatterns which will be allowed to change the types of things they
rewrite.

PiperOrigin-RevId: 223243783
2019-03-29 14:12:07 -07:00
Chris Lattner 721a30d6a0 Tidy up the replaceOp hooks in PatternMatch, generalizing them to support any
number of result ops.  Among other things, this results in shorter names

PiperOrigin-RevId: 222685039
2019-03-29 14:09:28 -07:00
Chris Lattner 1427d0f01b Minimal patch to allow patterns to rewrite multi-result instructions, related to b/119877155
PiperOrigin-RevId: 222597798
2019-03-29 14:09:14 -07:00
Chris Lattner 86a5323f04 - Simplify PatternMatch to *require* static benefits at pattern construction
time.  The "Fast and Flexible Instruction Selection With Constraints" paper
  from CC2018 makes a credible argument that dynamic costs aren't actually
  necessary/important, and we are not using them.

- Check in my "MLIR Generic DAG Rewriter Infrastructure" design doc into the
  source tree.

PiperOrigin-RevId: 221017546
2019-03-29 13:54:38 -07:00
Chris Lattner 7de0da9594 Refactor all of the canonicalization patterns out of the Canonicalize pass, and
make operations provide a list of canonicalizations that can be applied to
them.  This allows canonicalization to be general to any IR definition.

As part of this, sink PatternMatch.h/cpp down to the IR library to fix a
layering problem.

PiperOrigin-RevId: 218773981
2019-03-29 13:39:49 -07:00