Rollup merge of #91868 - tmiasko:llvm-time-trace-out, r=oli-obk

Use `OutputFilenames` to generate output file for `-Zllvm-time-trace`

The resulting profile will include the crate name and will be stored in
the `--out-dir` directory.

This implementation makes it convenient to use LLVM time trace together
with cargo, in the contrast to the previous implementation which would
overwrite profiles or store them in `.cargo/registry/..`.

src/lib.rs

@@ -205,6 +205,7 @@ impl CodegenBackend for CraneliftCodegenBackend {
  &self,
  ongoing_codegen: Box<dyn Any>,
  _sess: &Session,
+ _outputs: &OutputFilenames,
  ) -> Result<(CodegenResults, FxHashMap<WorkProductId, WorkProduct>), ErrorReported> {
  Ok(*ongoing_codegen
  .downcast::<(CodegenResults, FxHashMap<WorkProductId, WorkProduct>)>()