mark some target features as 'forbidden' so they cannot be (un)set

For now, this is just a warning, but should become a hard error in the future

1 files changed, 3 insertions, 2 deletions

diff --git a/compiler/rustc_middle/src/query/mod.rs b/compiler/rustc_middle/src/query/mod.rs
index d7a60a843b7..0f7f727212c 100644
--- a/compiler/rustc_middle/src/query/mod.rs
+++ b/compiler/rustc_middle/src/query/mod.rs
@@ -2185,10 +2185,11 @@ rustc_queries! {
         desc { "computing autoderef types for `{}`", goal.canonical.value.value }
     }
 
-    query supported_target_features(_: CrateNum) -> &'tcx UnordMap<String, Option<Symbol>> {
+    /// Returns the Rust target features for the current target. These are not always the same as LLVM target features!
+    query rust_target_features(_: CrateNum) -> &'tcx UnordMap<String, rustc_target::target_features::Stability> {
         arena_cache
         eval_always
-        desc { "looking up supported target features" }
+        desc { "looking up Rust target features" }
     }
 
     query implied_target_features(feature: Symbol) -> &'tcx Vec<Symbol> {