Rollup merge of #90701 - michaelwoerister:more-artifact-sizes, r=davidtwco

Record more artifact sizes during self-profiling.

This PR adds artifact size recording for

- "linked artifacts" (executables, RLIBs, dylibs, static libs)
- object files
- dwo files
- assembly files
- crate metadata
- LLVM bitcode files
- LLVM IR files
- codegen unit size estimates

Currently the identifiers emitted for these are hard-coded as string literals. Is it worth adding constants to https://github.com/rust-lang/measureme/blob/master/measureme/src/rustc.rs instead? We don't do that for query names and the like -- but artifact kinds might be more stable than query names.

compiler/rustc_codegen_ssa/src/back/link.rs

@@ -121,6 +121,19 @@ pub fn link_binary<'a, B: ArchiveBuilder<'a>>(
             if sess.opts.json_artifact_notifications {
                 sess.parse_sess.span_diagnostic.emit_artifact_notification(&out_filename, "link");
             }
+
+            if sess.prof.enabled() {
+                if let Some(artifact_name) = out_filename.file_name() {
+                    // Record size for self-profiling
+                    let file_size = std::fs::metadata(&out_filename).map(|m| m.len()).unwrap_or(0);
+
+                    sess.prof.artifact_size(
+                        "linked_artifact",
+                        artifact_name.to_string_lossy(),
+                        file_size,
+                    );
+                }
+            }
         }
     }