bjoernager/rust
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if $c:expr { Some($r:expr) } else { None } =>> $c.then(|| $r)

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Maybe Waffle 2023-02-15 11:43:41 +00:00
parent af3c8b2726
commit 8751fa1a9a
54 changed files with 159 additions and 281 deletions
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2
compiler/rustc_middle/src/ty/instance.rs
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@ -584,7 +584,7 @@ impl<'tcx> Instance<'tcx> {
/// this function returns `None`, then the MIR body does not require substitution during
/// codegen.
fn substs_for_mir_body(&self) -> Option<SubstsRef<'tcx>> {
if self.def.has_polymorphic_mir_body() { Some(self.substs) } else { None }
self.def.has_polymorphic_mir_body().then(|| self.substs)
}
pub fn subst_mir<T>(&self, tcx: TyCtxt<'tcx>, v: &T) -> T