[sanxiyn]

Khronos Group standardized LLVM IR 3.2 as SPIR(Standard Portable Intermediate Representation). It is an existence proof that standardizing LLVM IR is possible.

https://www.khronos.org/spir/

[legulere]

I actually work a bit with SPIR. They standardized a subset of LLVM IR 3.2 as SPIR 1.2

SPIR 2.0 on the other hand already is based off LLVM IR 3.4