diff --git a/include/llvm/CodeGen/PseudoSourceValue.h b/include/llvm/CodeGen/PseudoSourceValue.h
index dccf735ed02..3ad2502fe08 100644
--- a/include/llvm/CodeGen/PseudoSourceValue.h
+++ b/include/llvm/CodeGen/PseudoSourceValue.h
@@ -28,6 +28,12 @@ namespace llvm {
   public:
     PseudoSourceValue();
 
+    /// dump - Support for debugging, callable in GDB: V->dump()
+    //
+    virtual void dump() const;
+
+    /// print - Implement operator<< on PseudoSourceValue.
+    ///
     virtual void print(raw_ostream &OS) const;
 
     /// isConstant - Test whether this PseudoSourceValue has a constant value.
diff --git a/lib/CodeGen/PseudoSourceValue.cpp b/lib/CodeGen/PseudoSourceValue.cpp
index 5247906c46d..d0ea7069d4b 100644
--- a/lib/CodeGen/PseudoSourceValue.cpp
+++ b/lib/CodeGen/PseudoSourceValue.cpp
@@ -41,6 +41,10 @@ static const char *const PSVNames[] = {
 PseudoSourceValue::PseudoSourceValue() :
   Value(PointerType::getUnqual(Type::Int8Ty), PseudoSourceValueVal) {}
 
+void PseudoSourceValue::dump() const {
+  print(errs()); errs() << '\n'; errs().flush();
+}
+
 void PseudoSourceValue::print(raw_ostream &OS) const {
   OS << PSVNames[this - *PSVs];
 }
diff --git a/lib/VMCore/AsmWriter.cpp b/lib/VMCore/AsmWriter.cpp
index 2f6c1cc0f27..41929faed50 100644
--- a/lib/VMCore/AsmWriter.cpp
+++ b/lib/VMCore/AsmWriter.cpp
@@ -1759,8 +1759,7 @@ void Value::print(raw_ostream &OS, AssemblyAnnotationWriter *AAW) const {
   } else if (isa<InlineAsm>(this)) {
     WriteAsOperand(OS, this, true, 0);
   } else {
-    // FIXME: PseudoSourceValue breaks this!
-    //assert(0 && "Unknown value to print out!");
+    assert(0 && "Unknown value to print out!");
   }
 }