[PATCH] D55758: [TableGen] : Extend !if semantics through new language feature !ifs

[Simon Tatham via Phabricator via llvm-commits]

simon_tatham added inline comments.


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Comment at: docs/TableGen/LangIntro.rst:261
 
+``!cond(condition_1 : val1, condition_2 : val2, ..., condition_n : valn)``
+    Instead of embedding !if inside !if which can get cumbersome,
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I've just remembered that `docs/TableGen/LangRef.rst` contains a BNF description of the entire TableGen grammar, which should be updated if you're adding a new `!foo` operator at all (it includes a list of them all in the production for `BangOperator`). In this case, your new operator doesn't even have the same syntax as the rest of them, because of the unprecedented colon that separates the halves of each case, so it'll need a whole extra grammar rule :-)


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D55758/new/

https://reviews.llvm.org/D55758