simplify by using ShuffleVectorInst::getMaskValue.

[oota-llvm.git] / lib / VMCore / User.cpp

diff --git a/lib/VMCore/User.cpp b/lib/VMCore/User.cpp
index 9601da7011e80c9df643516927065475c6332fea..5f35ce4b9a4f0bee483d470b9fcdd425bd13f1ca 100644 (file)
--- a/lib/VMCore/User.cpp
+++ b/lib/VMCore/User.cpp
@@ -17,6 +17,8 @@ namespace llvm {
 //                                 User Class
 //===----------------------------------------------------------------------===//
 
+void User::anchor() {}
+
 // replaceUsesOfWith - Replaces all references to the "From" definition with
 // references to the "To" definition.
 //
@@ -40,8 +42,10 @@ void User::replaceUsesOfWith(Value *From, Value *To) {
 //===----------------------------------------------------------------------===//
 
 Use *User::allocHungoffUses(unsigned N) const {
-  Use *Begin = static_cast<Use*>(::operator new(sizeof(Use) * N
-                                                + sizeof(Use::UserRef)));
+  // Allocate the array of Uses, followed by a pointer (with bottom bit set) to
+  // the User.
+  size_t size = N * sizeof(Use) + sizeof(Use::UserRef);
+  Use *Begin = static_cast<Use*>(::operator new(size));
   Use *End = Begin + N;
   (void) new(End) Use::UserRef(const_cast<User*>(this), 1);
   return Use::initTags(Begin, End);