[PATCH] D53057: [WebAssembly] Handle undefined lane indices in SIMD patterns

[Thomas Lively via Phabricator via llvm-commits]

tlively added a comment.

In https://reviews.llvm.org/D53057#1261175, @aheejin wrote:

> Could you give an example of what kind of programs would generate `undef`s in the IR and why we need this? And also I guess it's good to include that in the CL and the commit description.


Done. See new description.


Repository:
  rL LLVM

https://reviews.llvm.org/D53057