From 4048a082847cea72431aa8235f54941ed064913b Mon Sep 17 00:00:00 2001
From: Ted Kremenek <kremenek@apple.com>
Date: Sat, 19 Jan 2008 04:31:12 +0000
Subject: [PATCH] Added FoldingSet style 'profiling' support for APSInt.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46189 91177308-0d34-0410-b5e6-96231b3b80d8
---
 include/llvm/ADT/APSInt.h |  4 ++++
 lib/Support/APSInt.cpp    | 23 +++++++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100644 lib/Support/APSInt.cpp

diff --git a/include/llvm/ADT/APSInt.h b/include/llvm/ADT/APSInt.h
index 25cf245c365..1fc083d9ba6 100644
--- a/include/llvm/ADT/APSInt.h
+++ b/include/llvm/ADT/APSInt.h
@@ -125,6 +125,10 @@ public:
     assert(IsUnsigned == RHS.IsUnsigned && "Signedness mismatch!");
     return IsUnsigned ? uge(RHS) : sge(RHS);
   }
+  
+  /// Profile - Used to insert APSInt objects, or objects that contain APSInt
+  ///  objects, into FoldingSets.
+  void Profile(FoldingSetNodeID& ID) const;
 };
   
 } // end namespace llvm
diff --git a/lib/Support/APSInt.cpp b/lib/Support/APSInt.cpp
new file mode 100644
index 00000000000..73acafa690c
--- /dev/null
+++ b/lib/Support/APSInt.cpp
@@ -0,0 +1,23 @@
+//===-- llvm/ADT/APSInt.cpp - Arbitrary Precision Signed Int ---*- C++ -*--===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements the APSInt class, which is a simple class that
+// represents an arbitrary sized integer that knows its signedness.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/ADT/APSInt.h"
+#include "llvm/ADT/FoldingSet.h"
+
+using namespace llvm;
+
+void APSInt::Profile(FoldingSetNodeID& ID) const {
+  ID.AddInteger((unsigned) (IsUnsigned ? 1 : 0));
+  APInt::Profile(ID);
+}