feat(tazjin/german-string): add pointer equality check in Eq r/8534

This can short-circuit two large string comparisons.

Change-Id: If45e7cf33921fe571482dc710c27ef8cc7c70885
Reviewed-on: https://cl.tvl.fyi/c/depot/+/12245
Autosubmit: tazjin <tazjin@tvl.su>
Tested-by: BuildkiteCI
Reviewed-by: tazjin <tazjin@tvl.su>

1 files changed, 3 insertions, 2 deletions

diff --git a/users/tazjin/german-string/src/lib.rs b/users/tazjin/german-string/src/lib.rs
index e696af7cbe62..09ac3384d916 100644
--- a/users/tazjin/german-string/src/lib.rs
+++ b/users/tazjin/german-string/src/lib.rs
@@ -112,8 +112,9 @@ impl PartialEq for GermanString {
             if self.len() <= 12 {
                 return self.0.small.data[..self.len()] == other.0.small.data[..other.len()];
             }
-            return self.0.large.prefix == other.0.large.prefix
-                && self.as_bytes() == other.as_bytes();
+            return self.0.large.data == other.0.large.data
+                || (self.0.large.prefix == other.0.large.prefix
+                    && self.as_bytes() == other.as_bytes());
         }
     }
 }