[llvm] [X86] Match ENDBR immediates in little-endian order (PR #208754)

[Mikołaj Piróg via llvm-commits]

mikolaj-pirog wrote:

@BIGSMATER your email setting is set to private, please change it to public: https://llvm.org/docs/DeveloperPolicy.html#email-addresses

https://github.com/llvm/llvm-project/pull/208754