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Merge `-Zhir-stats` into `-Zinput-stats` Currently `-Z hir-stats` prints the size and count of various kinds of nodes, and the total size of all the nodes it counted, but not the total count of nodes. So, before this PR: ``` $ git clone https://github.com/BurntSushi/ripgrep $ cd ripgrep $ cargo +nightly rustc -- -Z hir-stats ast-stats-1 PRE EXPANSION AST STATS ast-stats-1 Name Accumulated Size Count Item Size ast-stats-1 ---------------------------------------------------------------- ast-stats-1 ... ast-stats-1 ---------------------------------------------------------------- ast-stats-1 Total 93_576 ast-stats-1 ast-stats-2 POST EXPANSION AST STATS ast-stats-2 Name Accumulated Size Count Item Size ast-stats-2 ---------------------------------------------------------------- ast-stats-2 ... ast-stats-2 ---------------------------------------------------------------- ast-stats-2 Total 2_430_648 ast-stats-2 hir-stats HIR STATS hir-stats Name Accumulated Size Count Item Size hir-stats ---------------------------------------------------------------- hir-stats ... hir-stats ---------------------------------------------------------------- hir-stats Total 3_678_512 hir-stats ``` For consistency, this PR adds a total for the count as well: ``` $ cargo +stage1 rustc -- -Z hir-stats ast-stats-1 PRE EXPANSION AST STATS ast-stats-1 Name Accumulated Size Count Item Size ast-stats-1 ---------------------------------------------------------------- ast-stats-1 ... ast-stats-1 ---------------------------------------------------------------- ast-stats-1 Total 93_576 1_877 ast-stats-1 ast-stats-2 POST EXPANSION AST STATS ast-stats-2 Name Accumulated Size Count Item Size ast-stats-2 ---------------------------------------------------------------- ast-stats-2 ... ast-stats-2 ---------------------------------------------------------------- ast-stats-2 Total 2_430_648 48_625 ast-stats-2 hir-stats HIR STATS hir-stats Name Accumulated Size Count Item Size hir-stats ---------------------------------------------------------------- hir-stats ... hir-stats ---------------------------------------------------------------- hir-stats Total 3_678_512 73_418 hir-stats ``` I wasn't sure if I was supposed to update `tests/ui/stats/hir-stats.stderr` to reflect this. I ran it locally, thinking it would fail, but it didn't: ``` $ ./x test tests/ui/stats ... running 2 tests i. test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 17949 filtered out ``` Also: is there a reason `-Z hir-stats` and `-Z input-stats` both exist? The former seems like it should completely supercede the latter. But strangely, the two give very different numbers for node counts: ``` $ cargo +nightly rustc -- -Z input-stats ... Lines of code: 483 Pre-expansion node count: 2386 Post-expansion node count: 63844 ``` That's a 30% difference in this case. Is it intentional that these numbers are so different? I see comments for both saying that they are merely approximations and should not be expected to be correct: |
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