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Refactor CloneFunction to expose the new CloneBasicBlock function

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@5806 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-04-18 03:50:09 +00:00
parent 15faa8498c
commit 17d145d26f
1 changed files with 22 additions and 13 deletions
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35
lib/Transforms/Utils/CloneFunction.cpp
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@ -31,6 +31,25 @@ static inline void RemapInstruction(Instruction *I,
} }
} }
// CloneBasicBlock - See comments in Cloning.h
BasicBlock *CloneBasicBlock(const BasicBlock *BB,
std::map<const Value*, Value*> &ValueMap,
const char *NameSuffix) {
BasicBlock *NewBB = new BasicBlock("");
if (BB->hasName()) NewBB->setName(BB->getName()+NameSuffix);
// Loop over all instructions copying them over...
for (BasicBlock::const_iterator II = BB->begin(), IE = BB->end();
II != IE; ++II) {
Instruction *NewInst = II->clone();
if (II->hasName())
NewInst->setName(II->getName()+NameSuffix);
NewBB->getInstList().push_back(NewInst);
ValueMap[II] = NewInst; // Add instruction map to value.
}
return NewBB;
}
// Clone OldFunc into NewFunc, transforming the old arguments into references to // Clone OldFunc into NewFunc, transforming the old arguments into references to
// ArgMap values. // ArgMap values.
// //
@ -54,21 +73,11 @@ void CloneFunctionInto(Function *NewFunc, const Function *OldFunc,
BI != BE; ++BI) { BI != BE; ++BI) {
const BasicBlock &BB = *BI; const BasicBlock &BB = *BI;
// Create a new basic block to copy instructions into! // Create a new basic block and copy instructions into it!
BasicBlock *CBB = new BasicBlock("", NewFunc); BasicBlock *CBB = CloneBasicBlock(&BB, ValueMap, NameSuffix);
if (BB.hasName()) CBB->setName(BB.getName()+NameSuffix); NewFunc->getBasicBlockList().push_back(CBB);
ValueMap[&BB] = CBB; // Add basic block mapping. ValueMap[&BB] = CBB; // Add basic block mapping.
// Loop over all instructions copying them over...
for (BasicBlock::const_iterator II = BB.begin(), IE = BB.end();
II != IE; ++II) {
Instruction *NewInst = II->clone();
if (II->hasName())
NewInst->setName(II->getName()+NameSuffix); // Name is not cloned...
CBB->getInstList().push_back(NewInst);
ValueMap[II] = NewInst; // Add instruction map to value.
}
if (ReturnInst *RI = dyn_cast<ReturnInst>(CBB->getTerminator())) if (ReturnInst *RI = dyn_cast<ReturnInst>(CBB->getTerminator()))
Returns.push_back(RI); Returns.push_back(RI);
} }