Rollup merge of #141943 - nnethercote:rm-pre-expansion-ast-stats, r=compiler-errors
Remove pre-expansion AST stats. They're very little value, because they only measure the top-level `main.rs` or `lib.rs` file. (Other `.rs` files don't get read and parsed until expansion occurs.) I saw an example recently where the pre-expansion AST was 3KB in size and the post-expansion AST was 66MB. I kept the "POST EXPANSION" in the output header, I think that's useful information to avoid possible confusion about when the measurement happens. r? `@davidtwco`
This commit is contained in:
Matthias Krüger
GitHub
commit
b7150d4e63
2 changed files with 61 additions and 122 deletions
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@ -60,10 +60,6 @@ pub fn parse<'a>(sess: &'a Session) -> ast::Crate {
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guar.raise_fatal();
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});
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if sess.opts.unstable_opts.input_stats {
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input_stats::print_ast_stats(&krate, "PRE EXPANSION AST STATS", "ast-stats-1");
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}
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rustc_builtin_macros::cmdline_attrs::inject(
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&mut krate,
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&sess.psess,
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@ -298,7 +294,7 @@ fn early_lint_checks(tcx: TyCtxt<'_>, (): ()) {
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let mut lint_buffer = resolver.lint_buffer.steal();
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if sess.opts.unstable_opts.input_stats {
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input_stats::print_ast_stats(krate, "POST EXPANSION AST STATS", "ast-stats-2");
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input_stats::print_ast_stats(krate, "POST EXPANSION AST STATS", "ast-stats");
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}
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// Needs to go *after* expansion to be able to check the results of macro expansion.
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@ -1,120 +1,63 @@
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ast-stats-1 PRE EXPANSION AST STATS
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ast-stats-1 Name Accumulated Size Count Item Size
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ast-stats-1 ----------------------------------------------------------------
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ast-stats-1 Crate 40 (NN.N%) 1 40
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ast-stats-1 GenericArgs 40 (NN.N%) 1 40
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ast-stats-1 - AngleBracketed 40 (NN.N%) 1
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ast-stats-1 ExprField 48 (NN.N%) 1 48
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ast-stats-1 Attribute 64 (NN.N%) 2 32
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ast-stats-1 - DocComment 32 (NN.N%) 1
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ast-stats-1 - Normal 32 (NN.N%) 1
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ast-stats-1 WherePredicate 72 (NN.N%) 1 72
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ast-stats-1 - BoundPredicate 72 (NN.N%) 1
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ast-stats-1 ForeignItem 80 (NN.N%) 1 80
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ast-stats-1 - Fn 80 (NN.N%) 1
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ast-stats-1 Arm 96 (NN.N%) 2 48
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ast-stats-1 Local 96 (NN.N%) 1 96
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ast-stats-1 FnDecl 120 (NN.N%) 5 24
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ast-stats-1 Param 160 (NN.N%) 4 40
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ast-stats-1 Stmt 160 (NN.N%) 5 32
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ast-stats-1 - Let 32 (NN.N%) 1
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ast-stats-1 - MacCall 32 (NN.N%) 1
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ast-stats-1 - Expr 96 (NN.N%) 3
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ast-stats-1 Block 192 (NN.N%) 6 32
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ast-stats-1 FieldDef 208 (NN.N%) 2 104
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ast-stats-1 Variant 208 (NN.N%) 2 104
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ast-stats-1 AssocItem 320 (NN.N%) 4 80
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ast-stats-1 - Fn 160 (NN.N%) 2
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ast-stats-1 - Type 160 (NN.N%) 2
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ast-stats-1 GenericBound 352 (NN.N%) 4 88
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ast-stats-1 - Trait 352 (NN.N%) 4
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ast-stats-1 GenericParam 480 (NN.N%) 5 96
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ast-stats-1 Pat 504 (NN.N%) 7 72
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ast-stats-1 - Struct 72 (NN.N%) 1
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ast-stats-1 - Wild 72 (NN.N%) 1
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ast-stats-1 - Ident 360 (NN.N%) 5
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ast-stats-1 Expr 576 (NN.N%) 8 72
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ast-stats-1 - Match 72 (NN.N%) 1
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ast-stats-1 - Path 72 (NN.N%) 1
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ast-stats-1 - Struct 72 (NN.N%) 1
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ast-stats-1 - Lit 144 (NN.N%) 2
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ast-stats-1 - Block 216 (NN.N%) 3
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ast-stats-1 PathSegment 744 (NN.N%) 31 24
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ast-stats-1 Ty 896 (NN.N%) 14 64
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ast-stats-1 - Ptr 64 (NN.N%) 1
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ast-stats-1 - Ref 64 (NN.N%) 1
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ast-stats-1 - ImplicitSelf 128 (NN.N%) 2
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ast-stats-1 - Path 640 (NN.N%) 10
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ast-stats-1 Item 1_296 (NN.N%) 9 144
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ast-stats-1 - Enum 144 (NN.N%) 1
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ast-stats-1 - ForeignMod 144 (NN.N%) 1
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ast-stats-1 - Impl 144 (NN.N%) 1
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ast-stats-1 - Trait 144 (NN.N%) 1
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ast-stats-1 - Fn 288 (NN.N%) 2
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ast-stats-1 - Use 432 (NN.N%) 3
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ast-stats-1 ----------------------------------------------------------------
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ast-stats-1 Total 6_752 116
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ast-stats-1
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ast-stats-2 POST EXPANSION AST STATS
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ast-stats-2 Name Accumulated Size Count Item Size
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ast-stats-2 ----------------------------------------------------------------
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ast-stats-2 Crate 40 (NN.N%) 1 40
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ast-stats-2 GenericArgs 40 (NN.N%) 1 40
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ast-stats-2 - AngleBracketed 40 (NN.N%) 1
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ast-stats-2 ExprField 48 (NN.N%) 1 48
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ast-stats-2 WherePredicate 72 (NN.N%) 1 72
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ast-stats-2 - BoundPredicate 72 (NN.N%) 1
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ast-stats-2 ForeignItem 80 (NN.N%) 1 80
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ast-stats-2 - Fn 80 (NN.N%) 1
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ast-stats-2 Arm 96 (NN.N%) 2 48
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ast-stats-2 Local 96 (NN.N%) 1 96
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ast-stats-2 FnDecl 120 (NN.N%) 5 24
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ast-stats-2 InlineAsm 120 (NN.N%) 1 120
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ast-stats-2 Attribute 128 (NN.N%) 4 32
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ast-stats-2 - DocComment 32 (NN.N%) 1
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ast-stats-2 - Normal 96 (NN.N%) 3
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ast-stats-2 Param 160 (NN.N%) 4 40
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ast-stats-2 Stmt 160 (NN.N%) 5 32
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ast-stats-2 - Let 32 (NN.N%) 1
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ast-stats-2 - Semi 32 (NN.N%) 1
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ast-stats-2 - Expr 96 (NN.N%) 3
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ast-stats-2 Block 192 (NN.N%) 6 32
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ast-stats-2 FieldDef 208 (NN.N%) 2 104
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ast-stats-2 Variant 208 (NN.N%) 2 104
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ast-stats-2 AssocItem 320 (NN.N%) 4 80
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ast-stats-2 - Fn 160 (NN.N%) 2
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ast-stats-2 - Type 160 (NN.N%) 2
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ast-stats-2 GenericBound 352 (NN.N%) 4 88
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ast-stats-2 - Trait 352 (NN.N%) 4
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ast-stats-2 GenericParam 480 (NN.N%) 5 96
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ast-stats-2 Pat 504 (NN.N%) 7 72
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ast-stats-2 - Struct 72 (NN.N%) 1
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ast-stats-2 - Wild 72 (NN.N%) 1
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ast-stats-2 - Ident 360 (NN.N%) 5
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ast-stats-2 Expr 648 (NN.N%) 9 72
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ast-stats-2 - InlineAsm 72 (NN.N%) 1
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ast-stats-2 - Match 72 (NN.N%) 1
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ast-stats-2 - Path 72 (NN.N%) 1
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ast-stats-2 - Struct 72 (NN.N%) 1
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ast-stats-2 - Lit 144 (NN.N%) 2
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ast-stats-2 - Block 216 (NN.N%) 3
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ast-stats-2 PathSegment 864 (NN.N%) 36 24
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ast-stats-2 Ty 896 (NN.N%) 14 64
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ast-stats-2 - Ptr 64 (NN.N%) 1
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ast-stats-2 - Ref 64 (NN.N%) 1
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ast-stats-2 - ImplicitSelf 128 (NN.N%) 2
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ast-stats-2 - Path 640 (NN.N%) 10
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ast-stats-2 Item 1_584 (NN.N%) 11 144
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ast-stats-2 - Enum 144 (NN.N%) 1
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ast-stats-2 - ExternCrate 144 (NN.N%) 1
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ast-stats-2 - ForeignMod 144 (NN.N%) 1
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ast-stats-2 - Impl 144 (NN.N%) 1
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ast-stats-2 - Trait 144 (NN.N%) 1
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ast-stats-2 - Fn 288 (NN.N%) 2
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ast-stats-2 - Use 576 (NN.N%) 4
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ast-stats-2 ----------------------------------------------------------------
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ast-stats-2 Total 7_416 127
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ast-stats-2
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ast-stats POST EXPANSION AST STATS
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ast-stats Name Accumulated Size Count Item Size
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ast-stats ----------------------------------------------------------------
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ast-stats Crate 40 (NN.N%) 1 40
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ast-stats GenericArgs 40 (NN.N%) 1 40
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ast-stats - AngleBracketed 40 (NN.N%) 1
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ast-stats ExprField 48 (NN.N%) 1 48
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ast-stats WherePredicate 72 (NN.N%) 1 72
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ast-stats - BoundPredicate 72 (NN.N%) 1
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ast-stats ForeignItem 80 (NN.N%) 1 80
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ast-stats - Fn 80 (NN.N%) 1
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ast-stats Arm 96 (NN.N%) 2 48
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ast-stats Local 96 (NN.N%) 1 96
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ast-stats FnDecl 120 (NN.N%) 5 24
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ast-stats InlineAsm 120 (NN.N%) 1 120
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ast-stats Attribute 128 (NN.N%) 4 32
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ast-stats - DocComment 32 (NN.N%) 1
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ast-stats - Normal 96 (NN.N%) 3
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ast-stats Param 160 (NN.N%) 4 40
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ast-stats Stmt 160 (NN.N%) 5 32
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ast-stats - Let 32 (NN.N%) 1
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ast-stats - Semi 32 (NN.N%) 1
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ast-stats - Expr 96 (NN.N%) 3
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ast-stats Block 192 (NN.N%) 6 32
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ast-stats FieldDef 208 (NN.N%) 2 104
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ast-stats Variant 208 (NN.N%) 2 104
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ast-stats AssocItem 320 (NN.N%) 4 80
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ast-stats - Fn 160 (NN.N%) 2
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ast-stats - Type 160 (NN.N%) 2
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ast-stats GenericBound 352 (NN.N%) 4 88
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ast-stats - Trait 352 (NN.N%) 4
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ast-stats GenericParam 480 (NN.N%) 5 96
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ast-stats Pat 504 (NN.N%) 7 72
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ast-stats - Struct 72 (NN.N%) 1
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ast-stats - Wild 72 (NN.N%) 1
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ast-stats - Ident 360 (NN.N%) 5
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ast-stats Expr 648 (NN.N%) 9 72
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ast-stats - InlineAsm 72 (NN.N%) 1
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ast-stats - Match 72 (NN.N%) 1
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ast-stats - Path 72 (NN.N%) 1
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ast-stats - Struct 72 (NN.N%) 1
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ast-stats - Lit 144 (NN.N%) 2
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ast-stats - Block 216 (NN.N%) 3
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ast-stats PathSegment 864 (NN.N%) 36 24
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ast-stats Ty 896 (NN.N%) 14 64
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ast-stats - Ptr 64 (NN.N%) 1
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ast-stats - Ref 64 (NN.N%) 1
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ast-stats - ImplicitSelf 128 (NN.N%) 2
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ast-stats - Path 640 (NN.N%) 10
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ast-stats Item 1_584 (NN.N%) 11 144
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ast-stats - Enum 144 (NN.N%) 1
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ast-stats - ExternCrate 144 (NN.N%) 1
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ast-stats - ForeignMod 144 (NN.N%) 1
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ast-stats - Impl 144 (NN.N%) 1
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ast-stats - Trait 144 (NN.N%) 1
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ast-stats - Fn 288 (NN.N%) 2
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ast-stats - Use 576 (NN.N%) 4
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ast-stats ----------------------------------------------------------------
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ast-stats Total 7_416 127
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ast-stats
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hir-stats HIR STATS
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hir-stats Name Accumulated Size Count Item Size
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hir-stats ----------------------------------------------------------------
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