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don't mark_stable_position needlessly in tyencode

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another 1% improvement in libcore size - also 1% in librustc

550076 liballoc-bb943c5a.rlib
1425150 liballoc_jemalloc-bb943c5a.rlib
10100 liballoc_system-bb943c5a.rlib
149372 libarena-bb943c5a.rlib
3964144 libcollections-bb943c5a.rlib
17744342 libcore-bb943c5a.rlib
197420 libflate-bb943c5a.rlib
241582 libfmt_macros-bb943c5a.rlib
550560 libgetopts-bb943c5a.rlib
219444 libgraphviz-bb943c5a.rlib
402668 liblibc-bb943c5a.rlib
187158 liblog-bb943c5a.rlib
704588 librand-bb943c5a.rlib
594522 librbml-bb943c5a.rlib
1392516 librustc_back-bb943c5a.rlib
38196500 librustc-bb943c5a.rlib
12826 librustc_bitflags-bb943c5a.rlib
2286918 librustc_borrowck-bb943c5a.rlib
561714 librustc_data_structures-bb943c5a.rlib
9356400 librustc_driver-bb943c5a.rlib
9378650 librustc_front-bb943c5a.rlib
1603680 librustc_lint-bb943c5a.rlib
79184908 librustc_llvm-bb943c5a.rlib
4746824 librustc_mir-bb943c5a.rlib
3532474 librustc_platform_intrinsics-bb943c5a.rlib
592664 librustc_privacy-bb943c5a.rlib
3114986 librustc_resolve-bb943c5a.rlib
14153174 librustc_trans-bb943c5a.rlib
11918356 librustc_typeck-bb943c5a.rlib
1669986 librustc_unicode-bb943c5a.rlib
15611582 librustdoc-bb943c5a.rlib
2836912 libserialize-bb943c5a.rlib
8549994 libstd-bb943c5a.rlib
30399156 libsyntax-bb943c5a.rlib
907058 libterm-bb943c5a.rlib
This commit is contained in:
Ariel Ben-Yehuda 2015-09-17 20:50:27 +03:00 committed by Ariel Ben-Yehuda
parent 7aed441ac8
commit ce02aa4942
1 changed files with 13 additions and 6 deletions
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19
src/librustc/metadata/tyencode.rs
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@ -14,6 +14,7 @@
#![allow(non_camel_case_types)]
use std::cell::RefCell;
use std::str;
use std::io::prelude::*;
use middle::def_id::DefId;
@ -173,12 +174,18 @@ fn estimate_sz(u: u64) -> u64 {
return len;
}
let abbrev_len = 3 + estimate_sz(pos) + estimate_sz(len);
if abbrev_len < len {
// I.e. it's actually an abbreviation.
cx.abbrevs.borrow_mut().insert(t, ty_abbrev {
s: format!("#{:x}:{:x}#", pos, len)
});
}
cx.abbrevs.borrow_mut().insert(t, ty_abbrev {
s: if abbrev_len < len {
format!("#{:x}:{:x}#", pos, len)
} else {
// if the abbreviation is longer than the real type,
// don't use #-notation. However, insert it here so
// other won't have to `mark_stable_position`
str::from_utf8(
&w.writer.get_ref()[pos as usize..end as usize]
).unwrap().to_owned()
}
});
}
fn enc_mutability(w: &mut Encoder, mt: hir::Mutability) {