en Copyright 2015 Java http://src.rcs.uwaterloo.ca:8080/source/history/llvm-project/mlir/test/lib/IR/TestBuiltinDistinctAttributes.cpp#728a8d5a81f35f24492fcd31928ef95e597a66af [mlir] Add a builtin distinct attributeA distinct attribute associates a referenced attribute with a uniqueidentifier. Every call to its create function allocates a newdistinct attribute instance. The address of the attribute instancetemporarily serves as its unique identifier. Similar to the namesof SSA values, the final unique identifiers are generated duringpretty printing.Examples: #distinct = distinct[0]<42.0 : f32> #distinct1 = distinct[1]<42.0 : f32> #distinct2 = distinct[2]<array<i32: 10, 42>>This mechanism is meant to generate attributes with a uniqueidentifier, which can be used to mark groups of operationsthat share a common properties such as if they are aliasing.The design of the distinct attribute ensures minimal memoryfootprint per distinct attribute since it only contains a referenceto another attribute. All distinct attributes are stored outside ofthe storage uniquer in a thread local store that is part of thecontext. It uses one bump pointer allocator per thread to ensuredistinct attributes can be created in-parallel.Reviewed By: rriddle, Dinistro, zero9178Differential Revision: https://reviews.llvm.org/D153360 List of files: /llvm-project/mlir/test/lib/IR/TestBuiltinDistinctAttributes.cpp Tue, 11 Jul 2023 07:30:18 +0000 Tobias Gysi <tobias.gysi@nextsilicon.com>