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Author SHA1 Message Date
Uday Bondhugula fc46bcf51d Complete affine expr parsing support 
- check for non-affine expressions
- handle negative numbers and negation of id's, expressions
- functions to check if a map is pure affine or semi-affine
- simplify/clean up affine map parsing code
- report more errors messages, more accurate error messages

PiperOrigin-RevId: 203773633
 2019-03-29 12:31:03 -07:00
Uday Bondhugula fdf7bc4e25 [WIP] Sketching IR and parsing support for affine maps, affine expressions 
Run test case:

$ mlir-opt test/IR/parser-affine-map.mlir
test/IR/parser-affine-map.mlir:3:30: error: expect '(' at start of map range
#hello_world2 (i, j) [s0] -> i+s0, j)
                             ^

PiperOrigin-RevId: 202736856
 2019-03-29 12:27:20 -07:00
MLIR Team 8901448f14 Add some scaffolding for parsing affine maps: 
- parsing affine map identifiers
- place-holder classes for AffineMap
- module contains a list of affine maps (defined at the top level).

PiperOrigin-RevId: 202336919
 2019-03-29 12:26:28 -07:00