Reuse ctor_sub_tys when we have one around

2024-01-06 17:58:57 +01:00
parent d40f1b1172
commit 50b197c6ee
3 changed files with 11 additions and 6 deletions
--- a/compiler/rustc_pattern_analysis/src/pat.rs
+++ b/compiler/rustc_pattern_analysis/src/pat.rs
@@ -81,10 +81,11 @@ impl<'p, Cx: TypeCx> DeconstructedPat<'p, Cx> {
        &self,
        pcx: &PlaceCtxt<'_, 'p, Cx>,
        other_ctor: &Constructor<Cx>,
+        ctor_sub_tys: &[Cx::Ty],
    ) -> SmallVec<[&'p DeconstructedPat<'p, Cx>; 2]> {
        let wildcard_sub_tys = || {
-            let tys = pcx.ctor_sub_tys(other_ctor);
-            tys.iter()
+            ctor_sub_tys
+                .iter()
                .map(|ty| DeconstructedPat::wildcard(*ty))
                .map(|pat| pcx.mcx.wildcard_arena.alloc(pat) as &_)
                .collect()