Commit Message from @MaskRay: Rust has a fragile embed-bitcode implementation (bddb59cf07/compiler/rustc_codegen_llvm/src/back/write.rs (L970-L1017)) which relied on the previous LLVM MC behavior. Rust's LLVM fork has carried a revert. This commit made the similar revert to help distributions since they would otherwise probably carry a similar patch (as they ship rust linked against system LLVM). Fixes https://bugs.llvm.org/show_bug.cgi?id=51207. Differential Revision: https://reviews.llvm.org/D107216
bddb59cf07/compiler/rustc_codegen_llvm/src/back/write.rs (L970-L1017)