Auto merge of #118723 - matthiaskrgr:rollup-409e9u1, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #116420 (discard invalid spans in external blocks)
 - #118686 (Only check principal trait ref for object safety)
 - #118688 (Add method to get type of an Rvalue in StableMIR)
 - #118707 (Ping GuillaumeGomez for changes in rustc_codegen_gcc)
 - #118712 (targets: remove not-added {i386,i486}-unknown-linux-gnu)
 - #118719 (CFI: Add char to CFI integer normalization)

Failed merges:

 - #117586 (Uplift the (new solver) canonicalizer into `rustc_next_trait_solver`)

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

Author: bors