[llvm] [X86][MC] Report error when the instruction length exceeds 15 bytes (PR #83708)

[Shengchen Kan via llvm-commits]

KanRobert wrote:

> Does it crash too if you compile it to object file? https://godbolt.org/z/3aqd497xG
@phoebewang Yes, it crashes. @e-kud is asking if we could report the error earlier (before encoding)


https://github.com/llvm/llvm-project/pull/83708