Fix metadata stats. · rust-lang/rust@9a926e5 (original) (raw)

`@@ -539,9 +539,11 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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`fn encode_crate_root(&mut self) -> Lazy<CrateRoot<'tcx>> {

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`let tcx = self.tcx;

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let mut i = self.position();

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let mut i = 0;

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let preamble_bytes = self.position() - i;

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`// Encode the crate deps

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i = self.position();

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`let crate_deps = self.encode_crate_deps();

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`let dylib_dependency_formats = self.encode_dylib_dependency_formats();

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`let dep_bytes = self.position() - i;

`@@ -567,7 +569,9 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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`let native_libraries = self.encode_native_libraries();

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`let native_lib_bytes = self.position() - i;

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i = self.position();

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`let foreign_modules = self.encode_foreign_modules();

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let foreign_modules_bytes = self.position() - i;

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`// Encode DefPathTable

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` i = self.position();

`@@ -587,6 +591,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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` i = self.position();

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`let incoherent_impls = self.encode_incoherent_impls();

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`let incoherent_impls_bytes = self.position() - i;

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+

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`// Encode MIR.

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` i = self.position();

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`self.encode_mir();

`@@ -599,6 +604,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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`let item_bytes = self.position() - i;

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`// Encode the allocation index

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i = self.position();

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`let interpret_alloc_index = {

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`let mut interpret_alloc_index = Vec::new();

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`let mut n = 0;

`@@ -621,6 +627,7 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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`self.lazy(interpret_alloc_index)

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`};

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let interpret_alloc_index_bytes = self.position() - i;

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`// Encode the proc macro data. This affects 'tables',

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`// so we need to do this before we encode the tables

`@@ -665,9 +672,9 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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`let source_map = self.encode_source_map();

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`let source_map_bytes = self.position() - i;

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i = self.position();

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`let attrs = tcx.hir().krate_attrs();

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`let has_default_lib_allocator = tcx.sess.contains_name(&attrs, sym::default_lib_allocator);

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-

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`let root = self.lazy(CrateRoot {

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`name: tcx.crate_name(LOCAL_CRATE),

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`extra_filename: tcx.sess.opts.cg.extra_filename.clone(),

`@@ -710,9 +717,34 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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` expn_hashes,

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` def_path_hash_map,

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`});

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let final_bytes = self.position() - i;

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`let total_bytes = self.position();

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let computed_total_bytes = preamble_bytes

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dep_bytes

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lib_feature_bytes

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lang_item_bytes

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diagnostic_item_bytes

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native_lib_bytes

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foreign_modules_bytes

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def_path_table_bytes

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traits_bytes

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impls_bytes

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incoherent_impls_bytes

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mir_bytes

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item_bytes

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interpret_alloc_index_bytes

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proc_macro_data_bytes

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tables_bytes

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debugger_visualizers_bytes

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exported_symbols_bytes

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hygiene_bytes

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def_path_hash_map_bytes

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source_map_bytes

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final_bytes;

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assert_eq!(total_bytes, computed_total_bytes);

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+

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`if tcx.sess.meta_stats() {

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`let mut zero_bytes = 0;

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`for e in self.opaque.data.iter() {

`@@ -721,27 +753,41 @@ impl<'a, 'tcx> EncodeContext<'a, 'tcx> {

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eprintln!("metadata stats:");

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eprintln!(" dep bytes: {}", dep_bytes);

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eprintln!(" lib feature bytes: {}", lib_feature_bytes);

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eprintln!(" lang item bytes: {}", lang_item_bytes);

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eprintln!(" diagnostic item bytes: {}", diagnostic_item_bytes);

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eprintln!(" native bytes: {}", native_lib_bytes);

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eprintln!(" debugger visualizers bytes: {}", debugger_visualizers_bytes);

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eprintln!(" source_map bytes: {}", source_map_bytes);

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eprintln!(" traits bytes: {}", traits_bytes);

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eprintln!(" impls bytes: {}", impls_bytes);

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eprintln!(" incoherent_impls bytes: {}", incoherent_impls_bytes);

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eprintln!(" exp. symbols bytes: {}", exported_symbols_bytes);

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eprintln!(" def-path table bytes: {}", def_path_table_bytes);

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eprintln!(" def-path hashes bytes: {}", def_path_hash_map_bytes);

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eprintln!(" proc-macro-data-bytes: {}", proc_macro_data_bytes);

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eprintln!(" mir bytes: {}", mir_bytes);

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eprintln!(" item bytes: {}", item_bytes);

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eprintln!(" table bytes: {}", tables_bytes);

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eprintln!(" hygiene bytes: {}", hygiene_bytes);

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eprintln!(" zero bytes: {}", zero_bytes);

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eprintln!(" total bytes: {}", total_bytes);

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let perc = |bytes| (bytes * 100) as f64 / total_bytes as f64;

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let p = |label, bytes| {

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eprintln!("{:>21}: {:>8} bytes ({:4.1}%)", label, bytes, perc(bytes));

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};

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+

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eprintln!("");

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eprintln!(

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"{} metadata bytes, of which {} bytes ({:.1}%) are zero",

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total_bytes,

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zero_bytes,

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perc(zero_bytes)

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);

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p("preamble", preamble_bytes);

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p("dep", dep_bytes);

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p("lib feature", lib_feature_bytes);

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p("lang item", lang_item_bytes);

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p("diagnostic item", diagnostic_item_bytes);

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p("native lib", native_lib_bytes);

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p("foreign modules", foreign_modules_bytes);

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p("def-path table", def_path_table_bytes);

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p("traits", traits_bytes);

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p("impls", impls_bytes);

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p("incoherent_impls", incoherent_impls_bytes);

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p("mir", mir_bytes);

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p("item", item_bytes);

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p("interpret_alloc_index", interpret_alloc_index_bytes);

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p("proc-macro-data", proc_macro_data_bytes);

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p("tables", tables_bytes);

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p("debugger visualizers", debugger_visualizers_bytes);

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p("exported symbols", exported_symbols_bytes);

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p("hygiene", hygiene_bytes);

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p("def-path hashes", def_path_hash_map_bytes);

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p("source_map", source_map_bytes);

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p("final", final_bytes);

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eprintln!("");

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` root