Speed this up a bit by making ModifiedRegs a vector<char> not vector<bool>
llvm-svn: 19787
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@ -112,7 +112,7 @@ void PEI::calculateCallerSavedRegisters(MachineFunction &Fn) {
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return;
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return;
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// This bitset contains an entry for each physical register for the target...
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// This bitset contains an entry for each physical register for the target...
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std::vector<bool> ModifiedRegs(RegInfo->getNumRegs());
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std::vector<char> ModifiedRegs(RegInfo->getNumRegs());
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unsigned MaxCallFrameSize = 0;
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unsigned MaxCallFrameSize = 0;
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bool HasCalls = false;
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bool HasCalls = false;
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@ -209,7 +209,7 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
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const MRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
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const MRegisterInfo *RegInfo = Fn.getTarget().getRegisterInfo();
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// Now that we have a stack slot for each register to be saved, insert spill
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// Now that we have a stack slot for each register to be saved, insert spill
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// code into the entry block...
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// code into the entry block.
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MachineBasicBlock *MBB = Fn.begin();
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MachineBasicBlock *MBB = Fn.begin();
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MachineBasicBlock::iterator I = MBB->begin();
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MachineBasicBlock::iterator I = MBB->begin();
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for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) {
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for (unsigned i = 0, e = RegsToSave.size(); i != e; ++i) {
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@ -219,8 +219,8 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
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// Add code to restore the callee-save registers in each exiting block.
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// Add code to restore the callee-save registers in each exiting block.
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const TargetInstrInfo &TII = *Fn.getTarget().getInstrInfo();
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const TargetInstrInfo &TII = *Fn.getTarget().getInstrInfo();
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for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI) {
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for (MachineFunction::iterator FI = Fn.begin(), E = Fn.end(); FI != E; ++FI)
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// If last instruction is a return instruction, add an epilogue
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// If last instruction is a return instruction, add an epilogue.
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if (!FI->empty() && TII.isReturn(FI->back().getOpcode())) {
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if (!FI->empty() && TII.isReturn(FI->back().getOpcode())) {
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MBB = FI;
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MBB = FI;
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I = MBB->end(); --I;
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I = MBB->end(); --I;
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@ -232,12 +232,11 @@ void PEI::saveCallerSavedRegisters(MachineFunction &Fn) {
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--I; // Insert in reverse order
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--I; // Insert in reverse order
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}
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}
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}
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}
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}
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}
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}
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/// calculateFrameObjectOffsets - Calculate actual frame offsets for all of the
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/// calculateFrameObjectOffsets - Calculate actual frame offsets for all of the
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/// abstract stack objects...
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/// abstract stack objects.
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///
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///
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void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
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void PEI::calculateFrameObjectOffsets(MachineFunction &Fn) {
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const TargetFrameInfo &TFI = *Fn.getTarget().getFrameInfo();
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const TargetFrameInfo &TFI = *Fn.getTarget().getFrameInfo();
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