From: Duncan P. N. Exon Smith <dexonsmith@apple.com>
Date: Fri, 5 Dec 2014 01:41:36 +0000 (+0000)
Subject: ADT: Remove GetStringMapEntryFromValue()
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=afcbfb40fb2fdddf9be84630540b838175be5049;p=oota-llvm.git

ADT: Remove GetStringMapEntryFromValue()

It relies on undefined behaviour, since `StringMapEntry<>` is not
a standard layout type.  There are no users anyway.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@223439 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/include/llvm/ADT/StringMap.h b/include/llvm/ADT/StringMap.h
index 2feb2ab0074..3437607a0bd 100644
--- a/include/llvm/ADT/StringMap.h
+++ b/include/llvm/ADT/StringMap.h
@@ -179,19 +179,6 @@ public:
     return Create(Key, ValueTy());
   }
 
-  /// GetStringMapEntryFromValue - Given a value that is known to be embedded
-  /// into a StringMapEntry, return the StringMapEntry itself.
-  static StringMapEntry &GetStringMapEntryFromValue(ValueTy &V) {
-    StringMapEntry *EPtr = 0;
-    char *Ptr = reinterpret_cast<char*>(&V) -
-                  (reinterpret_cast<char*>(&EPtr->second) -
-                   reinterpret_cast<char*>(EPtr));
-    return *reinterpret_cast<StringMapEntry*>(Ptr);
-  }
-  static const StringMapEntry &GetStringMapEntryFromValue(const ValueTy &V) {
-    return GetStringMapEntryFromValue(const_cast<ValueTy&>(V));
-  }
-
   /// GetStringMapEntryFromKeyData - Given key data that is known to be embedded
   /// into a StringMapEntry, return the StringMapEntry itself.
   static StringMapEntry &GetStringMapEntryFromKeyData(const char *KeyData) {