Auto merge of #49993 - nnethercote:shrink-Token, r=alexcrichton

Change the hashcounts in raw `Lit` variants from usize to u16.

This reduces the size of `Token` from 32 bytes to 24 bytes on 64-bit
platforms.

2 files changed, 6 insertions, 1 deletions

diff --git a/src/libsyntax/ext/build.rs b/src/libsyntax/ext/build.rs
index 36244f0a3c4..a9f48342243 100644
--- a/src/libsyntax/ext/build.rs
+++ b/src/libsyntax/ext/build.rs
@@ -139,6 +139,7 @@ pub trait AstBuilder {
     fn expr_usize(&self, span: Span, i: usize) -> P<ast::Expr>;
     fn expr_isize(&self, sp: Span, i: isize) -> P<ast::Expr>;
     fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr>;
+    fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr>;
     fn expr_u32(&self, sp: Span, u: u32) -> P<ast::Expr>;
     fn expr_bool(&self, sp: Span, value: bool) -> P<ast::Expr>;
 
@@ -708,6 +709,10 @@ impl<'a> AstBuilder for ExtCtxt<'a> {
         self.expr_lit(sp, ast::LitKind::Int(u as u128,
                                             ast::LitIntType::Unsigned(ast::UintTy::U32)))
     }
+    fn expr_u16(&self, sp: Span, u: u16) -> P<ast::Expr> {
+        self.expr_lit(sp, ast::LitKind::Int(u as u128,
+                                            ast::LitIntType::Unsigned(ast::UintTy::U16)))
+    }
     fn expr_u8(&self, sp: Span, u: u8) -> P<ast::Expr> {
         self.expr_lit(sp, ast::LitKind::Int(u as u128, ast::LitIntType::Unsigned(ast::UintTy::U8)))
     }
diff --git a/src/libsyntax/ext/quote.rs b/src/libsyntax/ext/quote.rs
index 3303955d398..eeed291c0ca 100644
--- a/src/libsyntax/ext/quote.rs
+++ b/src/libsyntax/ext/quote.rs
@@ -623,7 +623,7 @@ fn expr_mk_token(cx: &ExtCtxt, sp: Span, tok: &token::Token) -> P<ast::Expr> {
         ($name: expr, $suffix: expr, $content: expr $(, $count: expr)*) => {{
             let name = mk_name(cx, sp, ast::Ident::with_empty_ctxt($content));
             let inner = cx.expr_call(sp, mk_token_path(cx, sp, $name), vec![
-                name $(, cx.expr_usize(sp, $count))*
+                name $(, cx.expr_u16(sp, $count))*
             ]);
             let suffix = match $suffix {
                 Some(name) => cx.expr_some(sp, mk_name(cx, sp, ast::Ident::with_empty_ctxt(name))),