summaryrefslogtreecommitdiffstats
path: root/lib/Target/MBlaze/MBlazeISelLowering.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'lib/Target/MBlaze/MBlazeISelLowering.cpp')
-rw-r--r--lib/Target/MBlaze/MBlazeISelLowering.cpp88
1 files changed, 42 insertions, 46 deletions
diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp
index 23889b1..1730b68 100644
--- a/lib/Target/MBlaze/MBlazeISelLowering.cpp
+++ b/lib/Target/MBlaze/MBlazeISelLowering.cpp
@@ -234,6 +234,24 @@ MBlazeTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
MachineRegisterInfo &R = F->getRegInfo();
MachineBasicBlock *loop = F->CreateMachineBasicBlock(LLVM_BB);
MachineBasicBlock *finish = F->CreateMachineBasicBlock(LLVM_BB);
+ F->insert(It, loop);
+ F->insert(It, finish);
+
+ // Update machine-CFG edges by transfering adding all successors and
+ // remaining instructions from the current block to the new block which
+ // will contain the Phi node for the select.
+ finish->splice(finish->begin(), BB,
+ llvm::next(MachineBasicBlock::iterator(MI)),
+ BB->end());
+ finish->transferSuccessorsAndUpdatePHIs(BB);
+
+ // Add the true and fallthrough blocks as its successors.
+ BB->addSuccessor(loop);
+ BB->addSuccessor(finish);
+
+ // Next, add the finish block as a successor of the loop block
+ loop->addSuccessor(finish);
+ loop->addSuccessor(loop);
unsigned IAMT = R.createVirtualRegister(MBlaze::CPURegsRegisterClass);
BuildMI(BB, dl, TII->get(MBlaze::ANDI), IAMT)
@@ -249,26 +267,6 @@ MBlazeTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
.addReg(IAMT)
.addMBB(finish);
- F->insert(It, loop);
- F->insert(It, finish);
-
- // 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)
- finish->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());
- BB->addSuccessor(loop);
- BB->addSuccessor(finish);
-
- // Next, add the finish block as a successor of the loop block
- loop->addSuccessor(finish);
- loop->addSuccessor(loop);
-
unsigned DST = R.createVirtualRegister(MBlaze::CPURegsRegisterClass);
unsigned NDST = R.createVirtualRegister(MBlaze::CPURegsRegisterClass);
BuildMI(loop, dl, TII->get(MBlaze::PHI), DST)
@@ -298,12 +296,13 @@ MBlazeTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
.addReg(NAMT)
.addMBB(loop);
- BuildMI(finish, dl, TII->get(MBlaze::PHI), MI->getOperand(0).getReg())
+ BuildMI(*finish, finish->begin(), dl,
+ TII->get(MBlaze::PHI), MI->getOperand(0).getReg())
.addReg(IVAL).addMBB(BB)
.addReg(NDST).addMBB(loop);
// The pseudo instruction is no longer needed so remove it
- F->DeleteMachineInstr(MI);
+ MI->eraseFromParent();
return finish;
}
@@ -338,27 +337,23 @@ MBlazeTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
case MBlazeCC::LE: Opc = MBlaze::BGTID; break;
}
- BuildMI(BB, dl, TII->get(Opc))
- .addReg(MI->getOperand(3).getReg())
- .addMBB(dneBB);
-
F->insert(It, flsBB);
F->insert(It, dneBB);
- // 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)
- dneBB->addSuccessor(*i);
+ // Transfer the remainder of BB and its successor edges to dneBB.
+ dneBB->splice(dneBB->begin(), BB,
+ llvm::next(MachineBasicBlock::iterator(MI)),
+ BB->end());
+ dneBB->transferSuccessorsAndUpdatePHIs(BB);
- // 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());
BB->addSuccessor(flsBB);
BB->addSuccessor(dneBB);
flsBB->addSuccessor(dneBB);
+ BuildMI(BB, dl, TII->get(Opc))
+ .addReg(MI->getOperand(3).getReg())
+ .addMBB(dneBB);
+
// sinkMBB:
// %Result = phi [ %FalseValue, copy0MBB ], [ %TrueValue, thisMBB ]
// ...
@@ -366,11 +361,12 @@ MBlazeTargetLowering::EmitInstrWithCustomInserter(MachineInstr *MI,
// .addReg(MI->getOperand(1).getReg()).addMBB(flsBB)
// .addReg(MI->getOperand(2).getReg()).addMBB(BB);
- BuildMI(dneBB, dl, TII->get(MBlaze::PHI), MI->getOperand(0).getReg())
+ BuildMI(*dneBB, dneBB->begin(), dl,
+ TII->get(MBlaze::PHI), MI->getOperand(0).getReg())
.addReg(MI->getOperand(2).getReg()).addMBB(flsBB)
.addReg(MI->getOperand(1).getReg()).addMBB(BB);
- F->DeleteMachineInstr(MI); // The pseudo instruction is gone now.
+ MI->eraseFromParent(); // The pseudo instruction is gone now.
return dneBB;
}
}
@@ -408,7 +404,7 @@ LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const {
// FIXME there isn't actually debug info here
DebugLoc dl = Op.getDebugLoc();
const GlobalValue *GV = cast<GlobalAddressSDNode>(Op)->getGlobal();
- SDValue GA = DAG.getTargetGlobalAddress(GV, MVT::i32);
+ SDValue GA = DAG.getTargetGlobalAddress(GV, dl, MVT::i32);
return DAG.getNode(MBlazeISD::Wrap, dl, MVT::i32, GA);
}
@@ -439,10 +435,8 @@ LowerJumpTable(SDValue Op, SelectionDAG &DAG) const {
SDValue MBlazeTargetLowering::
LowerConstantPool(SDValue Op, SelectionDAG &DAG) const {
SDValue ResNode;
- EVT PtrVT = Op.getValueType();
ConstantPoolSDNode *N = cast<ConstantPoolSDNode>(Op);
const Constant *C = N->getConstVal();
- SDValue Zero = DAG.getConstant(0, PtrVT);
DebugLoc dl = Op.getDebugLoc();
SDValue CP = DAG.getTargetConstantPool(C, MVT::i32, N->getAlignment(),
@@ -531,6 +525,7 @@ SDValue MBlazeTargetLowering::
LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv,
bool isVarArg, bool &isTailCall,
const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
const SmallVectorImpl<ISD::InputArg> &Ins,
DebugLoc dl, SelectionDAG &DAG,
SmallVectorImpl<SDValue> &InVals) const {
@@ -562,7 +557,7 @@ LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv,
for (unsigned i = 0, e = ArgLocs.size(); i != e; ++i) {
CCValAssign &VA = ArgLocs[i];
EVT RegVT = VA.getLocVT();
- SDValue Arg = Outs[i].Val;
+ SDValue Arg = OutVals[i];
// Promote the value if needed.
switch (VA.getLocInfo()) {
@@ -590,7 +585,7 @@ LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv,
// Create the frame index object for this incoming parameter
LastArgStackLoc = (FirstStackArgLoc + VA.getLocMemOffset());
int FI = MFI->CreateFixedObject(VA.getValVT().getSizeInBits()/8,
- LastArgStackLoc, true, false);
+ LastArgStackLoc, true);
SDValue PtrOff = DAG.getFrameIndex(FI,getPointerTy());
@@ -623,7 +618,7 @@ LowerCall(SDValue Chain, SDValue Callee, CallingConv::ID CallConv,
// node so that legalize doesn't hack it.
unsigned char OpFlag = MBlazeII::MO_NO_FLAG;
if (GlobalAddressSDNode *G = dyn_cast<GlobalAddressSDNode>(Callee))
- Callee = DAG.getTargetGlobalAddress(G->getGlobal(),
+ Callee = DAG.getTargetGlobalAddress(G->getGlobal(), dl,
getPointerTy(), 0, OpFlag);
else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee))
Callee = DAG.getTargetExternalSymbol(S->getSymbol(),
@@ -779,7 +774,7 @@ LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
// offset on PEI::calculateFrameObjectOffsets.
// Arguments are always 32-bit.
unsigned ArgSize = VA.getLocVT().getSizeInBits()/8;
- int FI = MFI->CreateFixedObject(ArgSize, 0, true, false);
+ int FI = MFI->CreateFixedObject(ArgSize, 0, true);
MBlazeFI->recordLoadArgsFI(FI, -(ArgSize+
(FirstStackArgLoc + VA.getLocMemOffset())));
@@ -810,7 +805,7 @@ LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
unsigned LiveReg = MF.addLiveIn(Reg, RC);
SDValue ArgValue = DAG.getCopyFromReg(Chain, dl, LiveReg, MVT::i32);
- int FI = MFI->CreateFixedObject(4, 0, true, false);
+ int FI = MFI->CreateFixedObject(4, 0, true);
MBlazeFI->recordStoreVarArgsFI(FI, -(4+(StackLoc*4)));
SDValue PtrOff = DAG.getFrameIndex(FI, getPointerTy());
OutChains.push_back(DAG.getStore(Chain, dl, ArgValue, PtrOff, NULL, 0,
@@ -841,6 +836,7 @@ LowerFormalArguments(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
SDValue MBlazeTargetLowering::
LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
const SmallVectorImpl<ISD::OutputArg> &Outs,
+ const SmallVectorImpl<SDValue> &OutVals,
DebugLoc dl, SelectionDAG &DAG) const {
// CCValAssign - represent the assignment of
// the return value to a location
@@ -869,7 +865,7 @@ LowerReturn(SDValue Chain, CallingConv::ID CallConv, bool isVarArg,
assert(VA.isRegLoc() && "Can only return in registers!");
Chain = DAG.getCopyToReg(Chain, dl, VA.getLocReg(),
- Outs[i].Val, Flag);
+ OutVals[i], Flag);
// guarantee that all emitted copies are
// stuck together, avoiding something bad
OpenPOWER on IntegriCloud