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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20751 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-22 00:09:45 +00:00
parent dc77036a82
commit 612f0b74d4
1 changed files with 28 additions and 0 deletions
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28
lib/Analysis/DataStructure/DataStructure.cpp
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@ -75,6 +75,34 @@ DSNode *DSNodeHandle::HandleForwarding() const {
return N;
}
//===----------------------------------------------------------------------===//
// DSScalarMap Implementation
//===----------------------------------------------------------------------===//
DSNodeHandle &DSScalarMap::AddGlobal(GlobalValue *GV) {
assert(ValueMap.count(GV) == 0 && "GV already exists!");
// If the node doesn't exist, check to see if it's a global that is
// equated to another global in the program.
EquivalenceClasses<GlobalValue*>::iterator ECI = GlobalECs.findValue(GV);
if (ECI != GlobalECs.end()) {
GlobalValue *Leader = *GlobalECs.findLeader(ECI);
if (Leader != GV) {
GV = Leader;
iterator I = ValueMap.find(GV);
if (I != ValueMap.end())
return I->second;
}
}
// Okay, this is either not an equivalenced global or it is the leader, it
// will be inserted into the scalar map now.
GlobalSet.insert(GV);
return ValueMap.insert(std::make_pair(GV, DSNodeHandle())).first->second;
}
//===----------------------------------------------------------------------===//
// DSNode Implementation
//===----------------------------------------------------------------------===//