Move raw bytes handling to Encoder/Decoder.

compiler/rustc_middle/src/ty/codec.rs

@@ -472,6 +472,11 @@ macro_rules! implement_ty_decoder {
                     read_str -> Cow<'_, str>;
                 }
 
+                #[inline]
+                fn read_raw_bytes(&mut self, bytes: &mut [std::mem::MaybeUninit<u8>]) -> Result<(), Self::Error> {
+                    self.opaque.read_raw_bytes(bytes)
+                }
+
                 fn error(&mut self, err: &str) -> Self::Error {
                     self.opaque.error(err)
                 }

compiler/rustc_middle/src/ty/query/on_disk_cache.rs

@@ -1167,6 +1167,7 @@ where
         emit_f32(f32);
         emit_char(char);
         emit_str(&str);
+        emit_raw_bytes(&[u8]);
     }
 }