From 3b9522b861248ea6f420815311a3ae5c85e82474 Mon Sep 17 00:00:00 2001
From: jbrockmendel <jbrockmendel@gmail.com>
Date: Fri, 6 Mar 2020 13:25:54 -0800
Subject: [PATCH] CLN: avoid values_from_object in Index.equals

---
 pandas/core/indexes/base.py  | 15 +++++++--------
 pandas/core/indexes/multi.py |  7 +++----
 2 files changed, 10 insertions(+), 12 deletions(-)

diff --git a/pandas/core/indexes/base.py b/pandas/core/indexes/base.py
index 5555b99a0ef88..e7ca63c926a9f 100644
--- a/pandas/core/indexes/base.py
+++ b/pandas/core/indexes/base.py
@@ -4094,7 +4094,6 @@ def __getitem__(self, key):
         if com.is_bool_indexer(key):
             key = np.asarray(key, dtype=bool)
 
-        key = com.values_from_object(key)
         result = getitem(key)
         if not is_scalar(result):
             if np.ndim(result) > 1:
@@ -4219,19 +4218,19 @@ def equals(self, other) -> bool:
         if not isinstance(other, Index):
             return False
 
-        if is_object_dtype(self) and not is_object_dtype(other):
+        if is_object_dtype(self.dtype) and not is_object_dtype(other.dtype):
             # if other is not object, use other's logic for coercion
             return other.equals(self)
 
         if isinstance(other, ABCMultiIndex):
             # d-level MultiIndex can equal d-tuple Index
-            if not is_object_dtype(self.dtype):
-                if self.nlevels != other.nlevels:
-                    return False
+            return other.equals(self)
 
-        return array_equivalent(
-            com.values_from_object(self), com.values_from_object(other)
-        )
+        if is_extension_array_dtype(other.dtype):
+            # All EA-backed Index subclasses override equals
+            return other.equals(self)
+
+        return array_equivalent(self._values, other._values)
 
     def identical(self, other) -> bool:
         """
diff --git a/pandas/core/indexes/multi.py b/pandas/core/indexes/multi.py
index c1efa512f326a..786cf576519c8 100644
--- a/pandas/core/indexes/multi.py
+++ b/pandas/core/indexes/multi.py
@@ -3136,11 +3136,10 @@ def equals(self, other) -> bool:
         if not isinstance(other, MultiIndex):
             # d-level MultiIndex can equal d-tuple Index
             if not is_object_dtype(other.dtype):
-                if self.nlevels != other.nlevels:
-                    return False
+                # other cannot contain tuples, so cannot match self
+                return False
 
-            other_vals = com.values_from_object(ensure_index(other))
-            return array_equivalent(self._ndarray_values, other_vals)
+            return array_equivalent(self._values, other._values)
 
         if self.nlevels != other.nlevels:
             return False