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Factor code that finalize PHI nodes, jump tables, etc. out of SelectBasicBlock. No functionality changes.

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llvm-svn: 54438
This commit is contained in:
Evan Cheng 2008-08-07 00:43:25 +00:00
parent 2975ced4df
commit f8a801a9b8
2 changed files with 29 additions and 15 deletions
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5
include/llvm/CodeGen/SelectionDAGISel.h
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@ -182,6 +182,11 @@ private:
FunctionLoweringInfo &FuncInfo);
void SelectBasicBlock(BasicBlock *BB, MachineFunction &MF,
FunctionLoweringInfo &FuncInfo,
std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate,
NodeAllocatorType &NodeAllocator);
void FinishBasicBlock(BasicBlock *BB, MachineFunction &MF,
FunctionLoweringInfo &FuncInfo,
std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate,
NodeAllocatorType &NodeAllocator);
void BuildSelectionDAG(SelectionDAG &DAG, BasicBlock *LLVMBB,

17
lib/CodeGen/SelectionDAG/SelectionDAGISel.cpp
View File

@ -5441,16 +5441,20 @@ void SelectionDAGISel::SelectAllBasicBlocks(Function &Fn, MachineFunction &MF,
// each basic block.
NodeAllocatorType NodeAllocator;
for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I)
SelectBasicBlock(I, MF, FuncInfo, NodeAllocator);
std::vector<std::pair<MachineInstr*, unsigned> > PHINodesToUpdate;
for (Function::iterator I = Fn.begin(), E = Fn.end(); I != E; ++I) {
BasicBlock *LLVMBB = &*I;
PHINodesToUpdate.clear();
SelectBasicBlock(LLVMBB, MF, FuncInfo, PHINodesToUpdate, NodeAllocator);
FinishBasicBlock(LLVMBB, MF, FuncInfo, PHINodesToUpdate, NodeAllocator);
}
}
void
SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB, MachineFunction &MF,
FunctionLoweringInfo &FuncInfo,
std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate,
NodeAllocatorType &NodeAllocator) {
std::vector<std::pair<MachineInstr*, unsigned> > PHINodesToUpdate;
{
SelectionDAG DAG(TLI, MF, FuncInfo,
getAnalysisToUpdate<MachineModuleInfo>(),
NodeAllocator);
@ -5464,6 +5468,11 @@ SelectionDAGISel::SelectBasicBlock(BasicBlock *LLVMBB, MachineFunction &MF,
CodeGenAndEmitDAG(DAG);
}
void
SelectionDAGISel::FinishBasicBlock(BasicBlock *LLVMBB, MachineFunction &MF,
FunctionLoweringInfo &FuncInfo,
std::vector<std::pair<MachineInstr*, unsigned> > &PHINodesToUpdate,
NodeAllocatorType &NodeAllocator) {
DOUT << "Total amount of phi nodes to update: "
<< PHINodesToUpdate.size() << "\n";
DEBUG(for (unsigned i = 0, e = PHINodesToUpdate.size(); i != e; ++i)