Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Auto merge of #69290 - wesleywiser:speed_up_ctfe_stress_4, r=RalfJung
Check `RUSTC_CTFE_BACKTRACE` much less by generating fewer errors Before this change, `get_size_and_align()` calls `get_fn_alloc()` *a lot* in CTFE heavy code. This previously returned an `Error` which would check if `RUSTC_CTFE_BACKTRACE` was set on construction. Doing this turned out to be a performance hotspot as @nnethercote discovered in #68792. This is an alternate take on that PR which resolves the performance issue by generating *many* fewer errors. Previously, `ctfe-stress-4` would generate over 5,000,000 errors each of which would check for the presence of the environment variable. With these changes, that number is reduced to 30. r? @RalfJung
- Loading branch information