[llvm] [llvm-ml] Fix RIP-relative addressing for ptr operands (PR #107618)

[Martin Storsjö via llvm-commits]

mstorsjo wrote:

I think it'd be great to have this fix widely deployed in 19.x as well, so we probably should file a backport request. But as it isn't entirely critical, and the bar for including things in 19.1.0 now is pretty high, we probably should file a backport request only after 19.1.0 is cut (early next week).

https://github.com/llvm/llvm-project/pull/107618