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Avoid unnecessary internings.

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Most involving `Symbol::intern` on string literals.
This commit is contained in:
Nicholas Nethercote 2019-05-22 12:42:23 +10:00
parent 6c0ff3dd97
commit 26451ef7b5
31 changed files with 84 additions and 106 deletions
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6
src/librustc_allocator/expand.rs
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@ -91,9 +91,7 @@ impl MutVisitor for ExpandAllocatorDirectives<'_> {
call_site: item.span, // use the call site of the static
def_site: None,
format: MacroAttribute(Symbol::intern(name)),
allow_internal_unstable: Some(vec![
Symbol::intern("rustc_attrs"),
].into()),
allow_internal_unstable: Some(vec![sym::rustc_attrs].into()),
allow_internal_unsafe: false,
local_inner_macros: false,
edition: self.sess.edition,
@ -223,7 +221,7 @@ impl AllocFnFactory<'_> {
}
fn attrs(&self) -> Vec<Attribute> {
let special = Symbol::intern("rustc_std_internal_symbol");
let special = sym::rustc_std_internal_symbol;
let special = self.cx.meta_word(self.span, special);
vec![self.cx.attribute(self.span, special)]
}