Nicolas Vasilache 1ee114322c [mlir][Linalg][Vector] Add forwarding patterns between linalg.copy and vector.transfer ... This revision adds custom rewrites for patterns that arise during linalg structured ops vectorization. These patterns allow the composition of linalg promotion, vectorization and removal of redundant copies. The patterns are voluntarily limited and restrictive atm. More robust behavior will be implemented once more powerful side effect modeling and analyses are available on view/subview. On the transfer_read side, the following pattern is rewritten: ``` %alloc = ... [optional] %view = std.view %alloc ... %subView = subview %allocOrView ... [optional] linalg.fill(%allocOrView, %cst) ... ... linalg.copy(%in, %subView) ... vector.transfer_read %allocOrView[...], %cst ... ``` into ``` [unchanged] %alloc = ... [unchanged] [optional] %view = std.view %alloc ... [unchanged] [unchanged] %subView = subview %allocOrView ... ... vector.transfer_read %in[...], %cst ... ``` On the transfer_write side, the following pattern is rewriten: ``` %alloc = ... [optional] %view = std.view %alloc ... %subView = subview %allocOrView... ... vector.transfer_write %..., %allocOrView[...] linalg.copy(%subView, %out) ``` Differential Revision: https://reviews.llvm.org/D80728		2020-05-29 08:08:34 -04:00
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mlir	[mlir][Linalg][Vector] Add forwarding patterns between linalg.copy and vector.transfer	2020-05-29 08:08:34 -04:00
mlir-c	Mass update the MLIR license header to mention "Part of the LLVM project"	2020-01-26 03:58:30 +00:00