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

[Evgenii Kudriashov via llvm-commits]

e-kud wrote:

I haven't noticed that it was addressed somewhere. What about inline asm? It seems that now it bypasses all checks and fails only during encoding. Is it expected? Maybe we need to add additional checks?

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