[llvm-commits] CVS: llvm/lib/VMCore/Value.cpp

[Chris Lattner]

Changes in directory llvm/lib/VMCore:

Value.cpp updated: 1.63 -> 1.64
---
Log message:

add an optimization for the case where the src has no name


---
Diffs of the changes:  (+6 -0)

 Value.cpp |    6 ++++++
 1 files changed, 6 insertions(+)


Index: llvm/lib/VMCore/Value.cpp
diff -u llvm/lib/VMCore/Value.cpp:1.63 llvm/lib/VMCore/Value.cpp:1.64
--- llvm/lib/VMCore/Value.cpp:1.63	Sat Feb 10 18:37:27 2007
+++ llvm/lib/VMCore/Value.cpp	Sat Feb 10 19:04:09 2007
@@ -141,6 +141,12 @@
 /// takeName - transfer the name from V to this value, setting V's name to
 /// empty.  It is an error to call V->takeName(V). 
 void Value::takeName(Value *V) {
+  if (!V->hasName()) {
+    if (hasName())
+      setName("");
+    return;
+  }
+  
   std::string Name = V->getName();
   V->setName("");
   setName(Name);