[PATCH] D99171: [WebAssembly] Fold xor by inverting branch target

[Sam Parker via Phabricator via llvm-commits]

samparker added a comment.

> Can you add tests that do explicit xors in the IR to show that it is not folded out where it shouldn't be?

Well this is what I mean, that I don't think this is possible. Writing a test in IR, the br has to take an i1, though this is expanded to i32 during codegen. I could write some IR tests with xors, but they should all be valid. AFAIK, I'd need a way of writing a test input in selection dag form to write a negative test. I have missed some FP conditions in the existing tests, so I'm going to add those.


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https://reviews.llvm.org/D99171