Auto merge of #51007 - AstralSorcerer:master, r=nagisa

Make globals with private linkage unnamed. Fixes #50862.

cc @oli-obk @nagisa

diff --cc src/librustc_codegen_llvm/back/write.rs
Simple merge

diff --cc src/librustc_codegen_llvm/llvm/ffi.rs
Simple merge

diff --cc src/librustc_codegen_llvm/mir/constant.rs
Simple merge

diff --cc src/rustllvm/RustWrapper.cpp
Simple merge