Added FoldingSet style 'profiling' support for APInt.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46188 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Support/APInt.cpp b/lib/Support/APInt.cpp
index 671fc4e..88f3281 100644
--- a/lib/Support/APInt.cpp
+++ b/lib/Support/APInt.cpp
@@ -14,6 +14,7 @@
#define DEBUG_TYPE "apint"
#include "llvm/ADT/APInt.h"
+#include "llvm/ADT/FoldingSet.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/MathExtras.h"
#include <math.h>
@@ -24,7 +25,6 @@
using namespace llvm;
-
/// This enumeration just provides for internal constants used in this
/// translation unit.
enum {
@@ -165,6 +165,18 @@
return clearUnusedBits();
}
+/// Profile - This method 'profiles' an APInt for use with FoldingSet.
+void APInt::Profile(FoldingSetNodeID& ID) const {
+ if (isSingleWord()) {
+ ID.AddInteger(VAL);
+ return;
+ }
+
+ uint32_t NumWords = getNumWords();
+ for (unsigned i = 0; i < NumWords; ++i)
+ ID.AddInteger(pVal[i]);
+}
+
/// add_1 - This function adds a single "digit" integer, y, to the multiple
/// "digit" integer array, x[]. x[] is modified to reflect the addition and
/// 1 is returned if there is a carry out, otherwise 0 is returned.