[llvm-branch-commits] [llvm] release/19.x: [WebAssembly] Fix rethrow's index calculation (#114693) (PR #115844)

[Heejin Ahn via llvm-branch-commits]

aheejin wrote:

FWIW I believe this is sufficiently safe. And this is a fix for a serious bug, which I think should land sooner than LLVM 20.

https://github.com/llvm/llvm-project/pull/115844