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Separate code that modifies control flow from code that adds instruction to 

basic blocks.

llvm-svn: 135490
This commit is contained in:
Akira Hatanaka 2011-07-19 17:09:53 +00:00
parent 9720dcf70b
commit 08636b4633
1 changed files with 18 additions and 18 deletions
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36
llvm/lib/Target/Mips/MipsISelLowering.cpp
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@ -760,6 +760,8 @@ MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
// ...
// fallthrough --> loopMBB
BB->addSuccessor(loopMBB);
loopMBB->addSuccessor(loopMBB);
loopMBB->addSuccessor(exitMBB);
// loopMBB:
// ll oldval, 0(ptr)
@ -782,8 +784,6 @@ MipsTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
BuildMI(BB, dl, TII->get(Mips::SC), Tmp3).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp3).addReg(Mips::ZERO).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(exitMBB);
MI->eraseFromParent(); // The instruction is gone now.
@ -845,6 +845,11 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(loopMBB);
loopMBB->addSuccessor(loopMBB);
loopMBB->addSuccessor(sinkMBB);
sinkMBB->addSuccessor(exitMBB);
// thisMBB:
// addiu tmp1,$0,-4 # 0xfffffffc
// and addr,ptr,tmp1
@ -867,7 +872,6 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::ANDi), Tmp4).addReg(Incr).addImm(MaskImm);
BuildMI(BB, dl, TII->get(Mips::SLL), Incr2).addReg(Tmp4).addReg(Shift);
BB->addSuccessor(loopMBB);
// atomic.load.binop
// loopMBB:
@ -909,8 +913,6 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
.addReg(Tmp9).addReg(Addr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp13).addReg(Mips::ZERO).addMBB(loopMBB);
BB->addSuccessor(loopMBB);
BB->addSuccessor(sinkMBB);
// sinkMBB:
// and tmp10,oldval,mask
@ -929,8 +931,6 @@ MipsTargetLowering::EmitAtomicBinaryPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::SRA), Dest)
.addReg(Tmp12).addImm(ShiftImm);
sinkMBB->addSuccessor(exitMBB);
MI->eraseFromParent(); // The instruction is gone now.
return exitMBB;
@ -977,6 +977,10 @@ MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
// ...
// fallthrough --> loop1MBB
BB->addSuccessor(loop1MBB);
loop1MBB->addSuccessor(exitMBB);
loop1MBB->addSuccessor(loop2MBB);
loop2MBB->addSuccessor(loop1MBB);
loop2MBB->addSuccessor(exitMBB);
// loop1MBB:
// ll dest, 0(ptr)
@ -985,8 +989,6 @@ MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::LL), Dest).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BNE))
.addReg(Dest).addReg(Oldval).addMBB(exitMBB);
BB->addSuccessor(exitMBB);
BB->addSuccessor(loop2MBB);
// loop2MBB:
// or tmp1, $0, newval
@ -997,8 +999,6 @@ MipsTargetLowering::EmitAtomicCmpSwap(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::SC), Tmp3).addReg(Tmp1).addReg(Ptr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp3).addReg(Mips::ZERO).addMBB(loop1MBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(exitMBB);
MI->eraseFromParent(); // The instruction is gone now.
@ -1061,6 +1061,13 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
BB->addSuccessor(loop1MBB);
loop1MBB->addSuccessor(sinkMBB);
loop1MBB->addSuccessor(loop2MBB);
loop2MBB->addSuccessor(loop1MBB);
loop2MBB->addSuccessor(sinkMBB);
sinkMBB->addSuccessor(exitMBB);
// thisMBB:
// addiu tmp1,$0,-4 # 0xfffffffc
// and addr,ptr,tmp1
@ -1085,7 +1092,6 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::SLL), Oldval2).addReg(Tmp4).addReg(Shift);
BuildMI(BB, dl, TII->get(Mips::ANDi), Tmp5).addReg(Newval).addImm(MaskImm);
BuildMI(BB, dl, TII->get(Mips::SLL), Newval2).addReg(Tmp5).addReg(Shift);
BB->addSuccessor(loop1MBB);
// loop1MBB:
// ll oldval3,0(addr)
@ -1096,8 +1102,6 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::AND), Oldval4).addReg(Oldval3).addReg(Mask);
BuildMI(BB, dl, TII->get(Mips::BNE))
.addReg(Oldval4).addReg(Oldval2).addMBB(sinkMBB);
BB->addSuccessor(sinkMBB);
BB->addSuccessor(loop2MBB);
// loop2MBB:
// and tmp6,oldval3,mask2
@ -1111,8 +1115,6 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
.addReg(Tmp7).addReg(Addr).addImm(0);
BuildMI(BB, dl, TII->get(Mips::BEQ))
.addReg(Tmp10).addReg(Mips::ZERO).addMBB(loop1MBB);
BB->addSuccessor(loop1MBB);
BB->addSuccessor(sinkMBB);
// sinkMBB:
// srl tmp8,oldval4,shift
@ -1128,8 +1130,6 @@ MipsTargetLowering::EmitAtomicCmpSwapPartword(MachineInstr *MI,
BuildMI(BB, dl, TII->get(Mips::SRA), Dest)
.addReg(Tmp9).addImm(ShiftImm);
sinkMBB->addSuccessor(exitMBB);
MI->eraseFromParent(); // The instruction is gone now.
return exitMBB;