[llvm] [LangRef] inline asm: the instructions are treated opaquely (PR #157080)

[Jacob Lifshay via llvm-commits]

programmerjake wrote:

related, gcc documents that they inspect inline asm to guess maximum size (presumably for deciding if gcc can emit instructions that require their target labels to be within a small range, e.g. x86 jumps with 1 byte offsets), as well as for inlining cost estimation: https://gcc.gnu.org/onlinedocs/gcc/Size-of-an-asm.html

https://github.com/llvm/llvm-project/pull/157080