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Revert r107655.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107668 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2010-07-06 15:49:48 +00:00
parent e9e1215d94
commit 258c58cc62
14 changed files with 215 additions and 280 deletions
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lib/Target/PowerPC/PPCISelLowering.cpp
+17 -29
View File
@@ -4513,10 +4513,7 @@ PPCTargetLowering::EmitAtomicBinary(MachineInstr *MI, MachineBasicBlock *BB,
MachineBasicBlock *exitMBB = F->CreateMachineBasicBlock(LLVM_BB);
F->insert(It, loopMBB);
F->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
exitMBB->transferSuccessors(BB);
MachineRegisterInfo &RegInfo = F->getRegInfo();
unsigned TmpReg = (!BinOpcode) ? incr :
@@ -4581,10 +4578,7 @@ PPCTargetLowering::EmitPartwordAtomicBinary(MachineInstr *MI,
MachineBasicBlock *exitMBB = F->CreateMachineBasicBlock(LLVM_BB);
F->insert(It, loopMBB);
F->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
exitMBB->transferSuccessors(BB);
MachineRegisterInfo &RegInfo = F->getRegInfo();
const TargetRegisterClass *RC =
@@ -4717,22 +4711,23 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineBasicBlock *sinkMBB = F->CreateMachineBasicBlock(LLVM_BB);
unsigned SelectPred = MI->getOperand(4).getImm();
DebugLoc dl = MI->getDebugLoc();
BuildMI(BB, dl, TII->get(PPC::BCC))
.addImm(SelectPred).addReg(MI->getOperand(1).getReg()).addMBB(sinkMBB);
F->insert(It, copy0MBB);
F->insert(It, sinkMBB);
// Transfer the remainder of BB and its successor edges to sinkMBB.
sinkMBB->splice(sinkMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
sinkMBB->transferSuccessorsAndUpdatePHIs(BB);
// Update machine-CFG edges by first adding all successors of the current
// block to the new block which will contain the Phi node for the select.
for (MachineBasicBlock::succ_iterator I = BB->succ_begin(),
E = BB->succ_end(); I != E; ++I)
sinkMBB->addSuccessor(*I);
// Next, remove all successors of the current block, and add the true
// and fallthrough blocks as its successors.
while (!BB->succ_empty())
BB->removeSuccessor(BB->succ_begin());
// Next, add the true and fallthrough blocks as its successors.
BB->addSuccessor(copy0MBB);
BB->addSuccessor(sinkMBB);
BuildMI(BB, dl, TII->get(PPC::BCC))
.addImm(SelectPred).addReg(MI->getOperand(1).getReg()).addMBB(sinkMBB);
// copy0MBB:
// %FalseValue = ...
// # fallthrough to sinkMBB
@@ -4745,8 +4740,7 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
// %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
// ...
BB = sinkMBB;
BuildMI(*BB, BB->begin(), dl,
TII->get(PPC::PHI), MI->getOperand(0).getReg())
BuildMI(BB, dl, TII->get(PPC::PHI), MI->getOperand(0).getReg())
.addReg(MI->getOperand(3).getReg()).addMBB(copy0MBB)
.addReg(MI->getOperand(2).getReg()).addMBB(thisMBB);
}
@@ -4832,10 +4826,7 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
F->insert(It, loop2MBB);
F->insert(It, midMBB);
F->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
exitMBB->transferSuccessors(BB);
// thisMBB:
// ...
@@ -4903,10 +4894,7 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
F->insert(It, loop2MBB);
F->insert(It, midMBB);
F->insert(It, exitMBB);
exitMBB->splice(exitMBB->begin(), BB,
llvm::next(MachineBasicBlock::iterator(MI)),
BB->end());
exitMBB->transferSuccessorsAndUpdatePHIs(BB);
exitMBB->transferSuccessors(BB);
MachineRegisterInfo &RegInfo = F->getRegInfo();
const TargetRegisterClass *RC =
@@ -5032,7 +5020,7 @@ PPCTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
llvm_unreachable("Unexpected instr type to insert");
}
MI->eraseFromParent(); // The pseudo instruction is gone now.
F->DeleteMachineInstr(MI); // The pseudo instruction is gone now.
return BB;
}