[llvm] [WebAssembly][FastISel] Bail out on meeting non-integer type in selectTrunc (PR #167165)

[Derek Schuff via llvm-commits]

dschuff wrote:

Yeah, I was kind of on the fence about whether to just always bail out on odd-size types or accept the one-off fixup to FastISel. I think this bug basically just proves my stated concern in #138479 that it wouldn't be just a one-off fix, i.e. that there would be more fixes to follow on. So given that, maybe it does make sense to just always bail out on odd-size types. Do you mind making that change in this PR?

https://github.com/llvm/llvm-project/pull/167165