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Fix bug: Assembler/2003-05-15-AssemblerProblem.llx

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@6234 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-05-15 19:37:21 +00:00
parent a60f855dc6
commit 608f4b0287
2 changed files with 14 additions and 4 deletions
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3
lib/VMCore/Constants.cpp
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@ -721,9 +721,8 @@ unsigned Constant::mutateReferences(Value *OldV, Value *NewV) {
GlobalValue *OldGV = CPR->getValue();
assert(OldGV == OldV && "Cannot mutate old value if I'm not using it!");
OldGV->getParent()->mutateConstantPointerRef(OldGV, NewGV);
Operands[0] = NewGV;
OldGV->getParent()->mutateConstantPointerRef(OldGV, NewGV);
return 1;
} else {
Constant *NewC = cast<Constant>(NewV);

15
lib/VMCore/Module.cpp
View File

@ -250,6 +250,7 @@ void Module::destroyConstantPointerRef(ConstantPointerRef *CPR) {
}
void Module::mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV) {
assert(OldGV != NewGV && "Cannot mutate to the same global!");
GlobalValueRefMap::iterator I = GVRefMap->Map.find(OldGV);
assert(I != GVRefMap->Map.end() &&
"mutateConstantPointerRef; OldGV not in table!");
@ -258,6 +259,16 @@ void Module::mutateConstantPointerRef(GlobalValue *OldGV, GlobalValue *NewGV) {
// Remove the old entry...
GVRefMap->Map.erase(I);
// Insert the new entry...
GVRefMap->Map.insert(std::make_pair(NewGV, Ref));
// Check to see if a CPR already exists for NewGV
I = GVRefMap->Map.lower_bound(NewGV);
if (I == GVRefMap->Map.end() || I->first != NewGV) {
// Insert the new entry...
GVRefMap->Map.insert(I, std::make_pair(NewGV, Ref));
} else {
// Otherwise, an entry already exists for the current global value.
// Completely replace the old CPR with the existing one...
Ref->replaceAllUsesWith(I->second);
delete Ref;
}
}