[PATCH] D59016: [TableGen] Allow 2^63-1 and 2^63-2 as int literals.

[Eli Friedman via Phabricator via llvm-commits]

efriedma accepted this revision.
efriedma added a comment.
This revision is now accepted and ready to land.

TableGen is not very performance sensitive; it's fine to just do the simple thing here.

DenseMap is generally faster than std::map both because it's a hashtable and because it allocates the keys and values inline... but clearly it's not a good idea to use it when it produces wrong results.  Longer-term, we should probably come up with some alternative that has performance like a DenseMap, but doesn't misbehave for cases like this.


Repository:
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  https://reviews.llvm.org/D59016/new/

https://reviews.llvm.org/D59016