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Change destination register operands of SC instructions so that unique 

virtual registers are used. 

llvm-svn: 135403
This commit is contained in:
Akira Hatanaka 2011-07-18 17:44:27 +00:00
parent 106b4924e2
commit 8b98515c29
1 changed files with 13 additions and 8 deletions
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21
llvm/lib/Target/Mips/MipsISelLowering.cpp
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@ -740,6 +740,7 @@ MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
unsigned Oldval = RegInfo.createVirtualRegister(RC);
unsigned Tmp1 = RegInfo.createVirtualRegister(RC);
unsigned Tmp2 = RegInfo.createVirtualRegister(RC);
unsigned Tmp3 = RegInfo.createVirtualRegister(RC);
// insert new blocks after the current block
const BasicBlock *LLVM_BB = BB->getBasicBlock();
@ -804,9 +805,9 @@ MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
BuildMI(BB, dl, TII->get(Mips::LW), Tmp2).addFrameIndex(fi).addImm(0);
BuildMI(BB, dl, TII->get(Mips::OR), Tmp1).addReg(Mips::ZERO).addReg(Tmp2);
}
BuildMI(BB, dl, TII->get(Mips::SC), Tmp1).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp3).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp1).addReg(Mips::ZERO).addMBB(loopMBB);
.addReg(Tmp3).addReg(Mips::ZERO).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
@ -852,6 +853,7 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
unsigned Tmp10 = RegInfo.createVirtualRegister(RC);
unsigned Tmp11 = RegInfo.createVirtualRegister(RC);
unsigned Tmp12 = RegInfo.createVirtualRegister(RC);
unsigned Tmp13 = RegInfo.createVirtualRegister(RC);
// insert new blocks after the current block
const BasicBlock *LLVM_BB = BB->getBasicBlock();
@ -947,9 +949,10 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::AND), Newval).addReg(Tmp7).addReg(Mask);
BuildMI(BB, dl, TII->get(Mips::AND), Tmp8).addReg(Oldval).addReg(Mask2);
BuildMI(BB, dl, TII->get(Mips::OR), Tmp9).addReg(Tmp8).addReg(Newval);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp9).addReg(Tmp9).addReg(Addr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp13)
.addReg(Tmp9).addReg(Addr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp9).addReg(Mips::ZERO).addMBB(loopMBB);
.addReg(Tmp13).addReg(Mips::ZERO).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
@ -994,6 +997,7 @@ MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
unsigned Tmp1 = RegInfo.createVirtualRegister(RC);
unsigned Tmp2 = RegInfo.createVirtualRegister(RC);
unsigned Tmp3 = RegInfo.createVirtualRegister(RC);
// insert new blocks after the current block
const BasicBlock *LLVM_BB = BB->getBasicBlock();
@ -1051,9 +1055,9 @@ MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
BB = loop2MBB;
BuildMI(BB, dl, TII->get(Mips::LW), Tmp2).addFrameIndex(fi).addImm(0);
BuildMI(BB, dl, TII->get(Mips::OR), Tmp1).addReg(Mips::ZERO).addReg(Tmp2);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp1).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp3).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp1).addReg(Mips::ZERO).addMBB(loop1MBB);
.addReg(Tmp3).addReg(Mips::ZERO).addMBB(loop1MBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);
@ -1097,6 +1101,7 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
unsigned Tmp7 = RegInfo.createVirtualRegister(RC);
unsigned Tmp8 = RegInfo.createVirtualRegister(RC);
unsigned Tmp9 = RegInfo.createVirtualRegister(RC);
unsigned Tmp10 = RegInfo.createVirtualRegister(RC);
// insert new blocks after the current block
const BasicBlock *LLVM_BB = BB->getBasicBlock();
@ -1161,10 +1166,10 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
BB = loop2MBB;
BuildMI(BB, dl, TII->get(Mips::AND), Tmp6).addReg(Oldval3).addReg(Mask2);
BuildMI(BB, dl, TII->get(Mips::OR), Tmp7).addReg(Tmp6).addReg(Newval2);
BuildMI(BB, dl, TII->get(Mips::SC), Tmp7)
BuildMI(BB, dl, TII->get(Mips::SC), Tmp10)
.addReg(Tmp7).addReg(Addr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp7).addReg(Mips::ZERO).addMBB(loop1MBB);
.addReg(Tmp10).addReg(Mips::ZERO).addMBB(loop1MBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);