From ed5edea96d72440679311d7d31d39804967f3220 Mon Sep 17 00:00:00 2001
From: Duncan Sands <baldrick@free.fr>
Date: Thu, 8 Mar 2012 09:32:21 +0000
Subject: [PATCH] Revert commit 152300 (ddunbar) since it still seems to be
 breaking buildbots.  Original commit message:

[ADT] Change the trivial FoldingSetNodeID::Add* methods to be inline, reapplied
with a fix for the longstanding over-read of 32-bit pointer values.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@152304 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/FoldingSet.h | 51 -----------------------------------
 lib/Support/FoldingSet.cpp    | 44 +++++++++++++++++++++++++++++-
 2 files changed, 43 insertions(+), 52 deletions(-)

diff --git a/include/llvm/ADT/FoldingSet.h b/include/llvm/ADT/FoldingSet.h
index 028f2df9cac..d2e0b8f91b2 100644
--- a/include/llvm/ADT/FoldingSet.h
+++ b/include/llvm/ADT/FoldingSet.h
@@ -17,7 +17,6 @@
 #define LLVM_ADT_FOLDINGSET_H
 
 #include "llvm/Support/DataTypes.h"
-#include "llvm/Support/ErrorHandling.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringRef.h"
 
@@ -311,7 +310,6 @@ public:
   void AddInteger(unsigned long long I);
   void AddBoolean(bool B) { AddInteger(B ? 1U : 0U); }
   void AddString(StringRef String);
-  /// AddNodeID - Adds the Bit data of another ID to *this.
   void AddNodeID(const FoldingSetNodeID &ID);
 
   template <typename T>
@@ -677,55 +675,6 @@ template<typename T> struct FoldingSetTrait<T*> {
     ID.AddPointer(X);
   }
 };
-
-//===----------------------------------------------------------------------===//
-// FoldingSetNodeID Inline function definitions
-
-/// Add* - Add various data types to Bit data.
-///
-inline void FoldingSetNodeID::AddPointer(const void *Ptr) {
-  // Note: this adds pointers to the hash using sizes and endianness that
-  // depend on the host.  It doesn't matter however, because hashing on
-  // pointer values in inherently unstable.  Nothing  should depend on the 
-  // ordering of nodes in the folding set.
-  if (sizeof(void*) == sizeof(unsigned))
-    AddInteger((unsigned) (unsigned long long) Ptr);
-  else if (sizeof(void*) == sizeof(unsigned long long)) {
-    AddInteger((unsigned long long) Ptr);
-  } else {
-    llvm_unreachable("unexpected sizeof(void*)");
-  }
-}
-inline void FoldingSetNodeID::AddInteger(signed I) {
-  Bits.push_back(I);
-}
-inline void FoldingSetNodeID::AddInteger(unsigned I) {
-  Bits.push_back(I);
-}
-inline void FoldingSetNodeID::AddInteger(long I) {
-  AddInteger((unsigned long)I);
-}
-inline void FoldingSetNodeID::AddInteger(unsigned long I) {
-  if (sizeof(long) == sizeof(int))
-    AddInteger(unsigned(I));
-  else if (sizeof(long) == sizeof(long long)) {
-    AddInteger((unsigned long long)I);
-  } else {
-    llvm_unreachable("unexpected sizeof(long)");
-  }
-}
-inline void FoldingSetNodeID::AddInteger(long long I) {
-  AddInteger((unsigned long long)I);
-}
-inline void FoldingSetNodeID::AddInteger(unsigned long long I) {
-  AddInteger(unsigned(I));
-  if ((uint64_t)(unsigned)I != I)
-    Bits.push_back(unsigned(I >> 32));
-}
-inline void FoldingSetNodeID::AddNodeID(const FoldingSetNodeID &ID) {
-  Bits.append(ID.Bits.begin(), ID.Bits.end());
-}
-
 } // End of namespace llvm.
 
 #endif
diff --git a/lib/Support/FoldingSet.cpp b/lib/Support/FoldingSet.cpp
index d182d480354..e029970b586 100644
--- a/lib/Support/FoldingSet.cpp
+++ b/lib/Support/FoldingSet.cpp
@@ -41,6 +41,43 @@ bool FoldingSetNodeIDRef::operator==(FoldingSetNodeIDRef RHS) const {
 //===----------------------------------------------------------------------===//
 // FoldingSetNodeID Implementation
 
+/// Add* - Add various data types to Bit data.
+///
+void FoldingSetNodeID::AddPointer(const void *Ptr) {
+  // Note: this adds pointers to the hash using sizes and endianness that
+  // depend on the host.  It doesn't matter however, because hashing on
+  // pointer values in inherently unstable.  Nothing  should depend on the 
+  // ordering of nodes in the folding set.
+  Bits.append(reinterpret_cast<unsigned *>(&Ptr),
+              reinterpret_cast<unsigned *>(&Ptr+1));
+}
+void FoldingSetNodeID::AddInteger(signed I) {
+  Bits.push_back(I);
+}
+void FoldingSetNodeID::AddInteger(unsigned I) {
+  Bits.push_back(I);
+}
+void FoldingSetNodeID::AddInteger(long I) {
+  AddInteger((unsigned long)I);
+}
+void FoldingSetNodeID::AddInteger(unsigned long I) {
+  if (sizeof(long) == sizeof(int))
+    AddInteger(unsigned(I));
+  else if (sizeof(long) == sizeof(long long)) {
+    AddInteger((unsigned long long)I);
+  } else {
+    llvm_unreachable("unexpected sizeof(long)");
+  }
+}
+void FoldingSetNodeID::AddInteger(long long I) {
+  AddInteger((unsigned long long)I);
+}
+void FoldingSetNodeID::AddInteger(unsigned long long I) {
+  AddInteger(unsigned(I));
+  if ((uint64_t)(unsigned)I != I)
+    Bits.push_back(unsigned(I >> 32));
+}
+
 void FoldingSetNodeID::AddString(StringRef String) {
   unsigned Size =  String.size();
   Bits.push_back(Size);
@@ -92,7 +129,12 @@ void FoldingSetNodeID::AddString(StringRef String) {
   Bits.push_back(V);
 }
 
-/// ComputeHash - Compute a strong hash value for this FoldingSetNodeID, used to
+// AddNodeID - Adds the Bit data of another ID to *this.
+void FoldingSetNodeID::AddNodeID(const FoldingSetNodeID &ID) {
+  Bits.append(ID.Bits.begin(), ID.Bits.end());
+}
+
+/// ComputeHash - Compute a strong hash value for this FoldingSetNodeID, used to 
 /// lookup the node in the FoldingSetImpl.
 unsigned FoldingSetNodeID::ComputeHash() const {
   return FoldingSetNodeIDRef(Bits.data(), Bits.size()).ComputeHash();