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ast: Reduce size of ExprKind by boxing fields of ExprKind::Struct

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This commit is contained in:
Vadim Petrochenkov 2021-03-16 03:15:53 +03:00
parent b25d3ba781
commit d1522b39dd
12 changed files with 48 additions and 28 deletions
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11
compiler/rustc_ast/src/ast.rs
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@ -1074,7 +1074,7 @@ pub struct Expr {
// `Expr` is used a lot. Make sure it doesn't unintentionally get bigger.
#[cfg(all(target_arch = "x86_64", target_pointer_width = "64"))]
rustc_data_structures::static_assert_size!(Expr, 120);
rustc_data_structures::static_assert_size!(Expr, 104);
impl Expr {
/// Returns `true` if this expression would be valid somewhere that expects a value;
@ -1244,6 +1244,13 @@ pub enum StructRest {
None,
}
#[derive(Clone, Encodable, Decodable, Debug)]
pub struct StructExpr {
pub path: Path,
pub fields: Vec<ExprField>,
pub rest: StructRest,
}
#[derive(Clone, Encodable, Decodable, Debug)]
pub enum ExprKind {
/// A `box x` expression.
@ -1369,7 +1376,7 @@ pub enum ExprKind {
/// A struct literal expression.
///
/// E.g., `Foo {x: 1, y: 2}`, or `Foo {x: 1, .. rest}`.
Struct(Path, Vec<ExprField>, StructRest),
Struct(P<StructExpr>),
/// An array literal constructed from one repeated element.
///