Remove many shared pointers

Mostly just low-haning fruit, i.e. function arguments that were @ even
though & would work just as well.

Reduces librustc.so size by 200k when compiling without -O, by 100k when
compiling with -O.

2 files changed, 2 insertions, 4 deletions

diff --git a/src/libsyntax/ext/deriving/cmp/totaleq.rs b/src/libsyntax/ext/deriving/cmp/totaleq.rs
index ccfb34a3a2f..70ac4d3d4c1 100644
--- a/src/libsyntax/ext/deriving/cmp/totaleq.rs
+++ b/src/libsyntax/ext/deriving/cmp/totaleq.rs
@@ -8,8 +8,6 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-use std::prelude::*;
-
 use ast::{meta_item, item, expr};
 use codemap::span;
 use ext::base::ExtCtxt;
diff --git a/src/libsyntax/ext/expand.rs b/src/libsyntax/ext/expand.rs
index 7fc784320ac..15f915ba4d8 100644
--- a/src/libsyntax/ext/expand.rs
+++ b/src/libsyntax/ext/expand.rs
@@ -644,7 +644,7 @@ pub fn core_macros() -> @str {
 }
 
 pub fn expand_crate(parse_sess: @mut parse::ParseSess,
-                    cfg: ast::crate_cfg, c: @crate) -> @crate {
+                    cfg: ast::crate_cfg, c: &crate) -> @crate {
     // adding *another* layer of indirection here so that the block
     // visitor can swap out one exts table for another for the duration
     // of the block.  The cleaner alternative would be to thread the
@@ -695,7 +695,7 @@ pub fn expand_crate(parse_sess: @mut parse::ParseSess,
     // as it registers all the core macros as expanders.
     f.fold_item(cm);
 
-    @f.fold_crate(&*c)
+    @f.fold_crate(c)
 }
 
 // given a function from idents to idents, produce