[PATCH] D90107: [TableGen] [AMDGPU] Add !sub bang operator for subtraction

[Paul C. Anagnostopoulos via Phabricator via llvm-commits]

Paul-C-Anagnostopoulos added inline comments.


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Comment at: llvm/docs/TableGen/ProgRef.rst:1664
+``!sub(``\ *a*\ ``,`` *b*\ ``, ...)``
+    This operator subtracts *a*, *b*, etc., and produces the difference.
+
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foad wrote:
> Can you improve this description so that I can understand what it does if there are more than two operands please? :) (I guess it probably follows the LISP precedent where `(- a b c d)` is `(- a (+ b c d))`?)
Thank you for asking this question! In fact, it does something silly, so I will not allow more than two arguments.


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  https://reviews.llvm.org/D90107/new/

https://reviews.llvm.org/D90107