From cf6796a2b06e5d07250cc7c50b0ecb9d6f008793 Mon Sep 17 00:00:00 2001
From: Zalathar <Zalathar@users.noreply.github.com>
Date: Fri, 30 Jan 2026 15:00:20 +1100
Subject: [PATCH] Remove redundant `IntoQueryParam` calls from query plumbing

In each of these contexts, the key must have already been converted by the
caller, since otherwise it wouldn't have type `Cache::Key`.
---
 compiler/rustc_middle/src/query/inner.rs | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/compiler/rustc_middle/src/query/inner.rs b/compiler/rustc_middle/src/query/inner.rs
index e41d23f82f12..80e64e6a78ed 100644
--- a/compiler/rustc_middle/src/query/inner.rs
+++ b/compiler/rustc_middle/src/query/inner.rs
@@ -10,7 +10,6 @@ use rustc_query_system::query::{QueryCache, QueryMode, try_get_cached};
 use rustc_span::{DUMMY_SP, ErrorGuaranteed, Span};
 
 use crate::dep_graph;
-use crate::query::IntoQueryParam;
 use crate::query::erase::{self, Erasable, Erased};
 use crate::ty::TyCtxt;
 
@@ -27,7 +26,6 @@ pub(crate) fn query_get_at<'tcx, Cache>(
 where
     Cache: QueryCache,
 {
-    let key = key.into_query_param();
     match try_get_cached(tcx, query_cache, &key) {
         Some(value) => value,
         None => execute_query(tcx, span, key, QueryMode::Get).unwrap(),
@@ -46,7 +44,6 @@ pub(crate) fn query_ensure<'tcx, Cache>(
 ) where
     Cache: QueryCache,
 {
-    let key = key.into_query_param();
     if try_get_cached(tcx, query_cache, &key).is_none() {
         execute_query(tcx, DUMMY_SP, key, QueryMode::Ensure { check_cache });
     }
@@ -66,7 +63,6 @@ where
     Cache: QueryCache<Value = Erased<Result<T, ErrorGuaranteed>>>,
     Result<T, ErrorGuaranteed>: Erasable,
 {
-    let key = key.into_query_param();
     if let Some(res) = try_get_cached(tcx, query_cache, &key) {
         erase::restore_val(res).map(drop)
     } else {