Introduce operations tree as a new optree module
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MaksimShagov
reviewed
Apr 2, 2024
|
Я бы хотел послушать более подробные объяснения вживую. |
vla5924
commented
Apr 2, 2024
|
Честно я ваще ничего не понимаю в ваших с++, макросы, шаблоны, понять ниче не могу |
|
Нужен ликбез |
ликбез проведен |
Да. Было. |
arteboss
approved these changes
Apr 3, 2024
MaksimShagov
approved these changes
Apr 6, 2024
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An operations tree (optree) will be used as an alternative backend representation for a program instead of a syntax tree (ast). The latter is relatively easy to build (since it is bijective with a program source code), but hard to analyze. An optree, conversely, is intended to be walked through and used for a program analysis, but it is also can be built easily from a syntax tree.
Each node of an optree represents an abstract operation that comes from a language domain. Operation may have multiple operands (input values), results (output values), and nested operations of any kind inside its body. Value, along with a parent operation, holds its data type and a list of uses (to memoize which operations has the given value as an operand).
It is important to notice that values are simple SSA registers, which means that being defined once, it cannot be redefined, and this fact makes it easy to track definition-use chain per each value. This concept is widely used in such frameworks like LLVM IR, MLIR.