Auto merge of #150190 - matthiaskrgr:rollup-tjdmcar, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - rust-lang/rust#146747 (rustc_codegen_llvm: Tidying of `update_target_reliable_float_cfg`)
 - rust-lang/rust#148499 (Nvptx: Use llbc as default linker)
 - rust-lang/rust#148991 (miri genmc: fix exit() handling)
 - rust-lang/rust#150172 (Handle remapped paths correctly when generating "Source" links)

r? `@ghost`
`@rustbot` modify labels: rollup