NAKAMURA Takumi ab2187d786 TableGen: Introduce !range operator for half-opened interval ...

`!range(a, b)` generates a list `[a,b)`. `a` is optional and `0` by default.

  - `!range(-1, 4)` generates `[-1, 0, 1, 2, 3]`
  - `!range(4)` generates `[0, 1, 2, 3]`
  - `!range(2, 2)` generates `[]<list<int>>`

`!range(list)` is equivalent to `!range(0, !size(list))`.

Differential Revision: https://reviews.llvm.org/D145871

2023-04-25 22:38:20 +09:00

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