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Author SHA1 Message Date
Alex Zinenko 9de199676f Implement the conversion between SDBMExpr and AffineExpr 
Since SDBM expressions are a subset of affine expressions, they can be
    converted to affine expressions in a straightforward way.  The inverse
    conversion may fail when the affine expression is not an SDBM.  Implement the
    inverse convresion assuming affine expressions are simplified and
    canonicalizied, detect subtractive and multiplicative forms of the stripe
    operation.

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PiperOrigin-RevId: 245494735
 2019-05-06 08:18:31 -07:00
Alex Zinenko 24d0f60d31 Start building SDBM infrastructure 
Striped difference-bound matrix expressions are a subset of affine expressions
    supporting low-complexity algorithms that can be useful for loop
    transformations.  This introduces the basic data data structures for building
    such expressions and unique'ing them in a MLIRContext.

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PiperOrigin-RevId: 245380206
 2019-05-06 08:17:42 -07:00
River Riddle dfc58742a2 Rename the 'namePrefix' field in the Dialect class to 'name' and tidy some comments to make it clear that 'name' refers to the dialect namespace. 
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PiperOrigin-RevId: 241103116
 2019-03-30 11:23:55 -07:00
Jacques Pienaar 1273af232c Add build files and update README. 
* Add initial version of build files;
    * Update README with instructions to download and build MLIR from github;

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PiperOrigin-RevId: 241102092
 2019-03-30 11:23:22 -07:00
River Riddle 6f24bf82f9 Assert that registered dialects have unique names. This creates a guarantee that the namespace of a dialect can be used a unique key. 
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PiperOrigin-RevId: 241049578
 2019-03-29 17:57:41 -07:00
River Riddle af9760fe18 Replace remaining usages of the Instruction class with Operation. 
PiperOrigin-RevId: 240777521
 2019-03-29 17:50:04 -07:00
River Riddle 9ffdc930c0 Rename the Instruction class to Operation. This just renames the class, usages of Instruction will still refer to a typedef in the interim. 
This is step 1/N to renaming Instruction to Operation.

PiperOrigin-RevId: 240431520
 2019-03-29 17:42:50 -07:00
River Riddle 7b0b344c5e Add a unittests directory for MLIR and start adding tests for OperandStorage from InstructionSupport.h. 
PiperOrigin-RevId: 236911640
 2019-03-29 16:58:05 -07:00