[PATCH] D75859: [CodeGenPrepare] Fold br(freeze(icmp x, const)) to br(icmp(freeze x, const))

[Johannes Doerfert via Phabricator via llvm-commits]

jdoerfert added a comment.

I feel this is part of a bigger pattern. (I assume constants cannot cause poison and undef now)

Let `op` be  `OPERATION<value, constant>` or `OPERATION<constant, value>`, if all uses of `op`, or the single use of `op`, are `freeze`, move `freeze` to `value`.

Now we can keep a list of opcodes for which we don't want to do this but it seems more generic than br + icmp.


Repository:
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  https://reviews.llvm.org/D75859/new/

https://reviews.llvm.org/D75859