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

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@34174 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-02-11 01:04:09 +00:00
parent 3e051647c0
commit f41916e75d
1 changed files with 6 additions and 0 deletions
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6
lib/VMCore/Value.cpp
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@ -141,6 +141,12 @@ void Value::setName(const std::string &name) {
/// 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);