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Use MachineInstrBuilder in InstrEmitter.

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This is supposed to be a mechanical change with no functional effects.

InstrEmitter can generate all types of MachineOperands which revealed
that MachineInstrBuilder was missing a few methods, added by this patch.

Besides providing a context pointer to MI::addOperand(),
MachineInstrBuilder seems like a better fit for this code.

llvm-svn: 170712
This commit is contained in:
Jakob Stoklund Olesen 2012-12-20 18:08:09 +00:00
parent 203e10c066
commit 51accf509d
3 changed files with 83 additions and 79 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/llvm/CodeGen/MachineInstrBuilder.h
View File

@ -138,6 +138,13 @@ public:
return *this;
}
const MachineInstrBuilder &addBlockAddress(const BlockAddress *BA,
int64_t Offset = 0,
unsigned char TargetFlags = 0) const {
MI->addOperand(*MF, MachineOperand::CreateBA(BA, Offset, TargetFlags));
return *this;
}
const MachineInstrBuilder &addRegMask(const uint32_t *Mask) const {
MI->addOperand(*MF, MachineOperand::CreateRegMask(Mask));
return *this;
@ -339,6 +346,9 @@ inline unsigned getUndefRegState(bool B) {
inline unsigned getInternalReadRegState(bool B) {
return B ? RegState::InternalRead : 0;
}
inline unsigned getDebugRegState(bool B) {
return B ? RegState::Debug : 0;
}
/// Helper class for constructing bundles of MachineInstrs.

142
lib/CodeGen/SelectionDAG/InstrEmitter.cpp
View File

@ -203,7 +203,8 @@ unsigned InstrEmitter::getDstOfOnlyCopyToRegUse(SDNode *Node,
return 0;
}
void InstrEmitter::CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
void InstrEmitter::CreateVirtualRegisters(SDNode *Node,
MachineInstrBuilder &MIB,
const MCInstrDesc &II,
bool IsClone, bool IsCloned,
DenseMap<SDValue, unsigned> &VRBaseMap) {
@ -222,7 +223,7 @@ void InstrEmitter::CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
unsigned NumResults = CountResults(Node);
VRBase = cast<RegisterSDNode>(Node->getOperand(i-NumResults))->getReg();
assert(TargetRegisterInfo::isPhysicalRegister(VRBase));
MI->addOperand(MachineOperand::CreateReg(VRBase, true));
MIB.addReg(VRBase, RegState::Define);
}
if (!VRBase && !IsClone && !IsCloned)
@ -237,7 +238,7 @@ void InstrEmitter::CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
const TargetRegisterClass *RegRC = MRI->getRegClass(Reg);
if (RegRC == RC) {
VRBase = Reg;
MI->addOperand(MachineOperand::CreateReg(Reg, true));
MIB.addReg(VRBase, RegState::Define);
break;
}
}
@ -249,7 +250,7 @@ void InstrEmitter::CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
if (VRBase == 0) {
assert(RC && "Isn't a register operand!");
VRBase = MRI->createVirtualRegister(RC);
MI->addOperand(MachineOperand::CreateReg(VRBase, true));
MIB.addReg(VRBase, RegState::Define);
}
SDValue Op(Node, i);
@ -291,7 +292,8 @@ unsigned InstrEmitter::getVR(SDValue Op,
/// specified machine instr. Insert register copies if the register is
/// not in the required register class.
void
InstrEmitter::AddRegisterOperand(MachineInstr *MI, SDValue Op,
InstrEmitter::AddRegisterOperand(MachineInstrBuilder &MIB,
SDValue Op,
unsigned IIOpNum,
const MCInstrDesc *II,
DenseMap<SDValue, unsigned> &VRBaseMap,
@ -303,7 +305,7 @@ InstrEmitter::AddRegisterOperand(MachineInstr *MI, SDValue Op,
unsigned VReg = getVR(Op, VRBaseMap);
assert(TargetRegisterInfo::isVirtualRegister(VReg) && "Not a vreg?");
const MCInstrDesc &MCID = MI->getDesc();
const MCInstrDesc &MCID = MIB->getDesc();
bool isOptDef = IIOpNum < MCID.getNumOperands() &&
MCID.OpInfo[IIOpNum].isOptionalDef();
@ -335,56 +337,53 @@ InstrEmitter::AddRegisterOperand(MachineInstr *MI, SDValue Op,
!IsDebug &&
!(IsClone || IsCloned);
if (isKill) {
unsigned Idx = MI->getNumOperands();
unsigned Idx = MIB->getNumOperands();
while (Idx > 0 &&
MI->getOperand(Idx-1).isReg() && MI->getOperand(Idx-1).isImplicit())
MIB->getOperand(Idx-1).isReg() &&
MIB->getOperand(Idx-1).isImplicit())
--Idx;
bool isTied = MI->getDesc().getOperandConstraint(Idx, MCOI::TIED_TO) != -1;
bool isTied = MCID.getOperandConstraint(Idx, MCOI::TIED_TO) != -1;
if (isTied)
isKill = false;
}
MI->addOperand(MachineOperand::CreateReg(VReg, isOptDef,
false/*isImp*/, isKill,
false/*isDead*/, false/*isUndef*/,
false/*isEarlyClobber*/,
0/*SubReg*/, IsDebug));
MIB.addReg(VReg, getDefRegState(isOptDef) | getKillRegState(isKill) |
getDebugRegState(IsDebug));
}
/// AddOperand - Add the specified operand to the specified machine instr. II
/// specifies the instruction information for the node, and IIOpNum is the
/// operand number (in the II) that we are adding.
void InstrEmitter::AddOperand(MachineInstr *MI, SDValue Op,
void InstrEmitter::AddOperand(MachineInstrBuilder &MIB,
SDValue Op,
unsigned IIOpNum,
const MCInstrDesc *II,
DenseMap<SDValue, unsigned> &VRBaseMap,
bool IsDebug, bool IsClone, bool IsCloned) {
if (Op.isMachineOpcode()) {
AddRegisterOperand(MI, Op, IIOpNum, II, VRBaseMap,
AddRegisterOperand(MIB, Op, IIOpNum, II, VRBaseMap,
IsDebug, IsClone, IsCloned);
} else if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateImm(C->getSExtValue()));
MIB.addImm(C->getSExtValue());
} else if (ConstantFPSDNode *F = dyn_cast<ConstantFPSDNode>(Op)) {
const ConstantFP *CFP = F->getConstantFPValue();
MI->addOperand(MachineOperand::CreateFPImm(CFP));
MIB.addFPImm(F->getConstantFPValue());
} else if (RegisterSDNode *R = dyn_cast<RegisterSDNode>(Op)) {
// Turn additional physreg operands into implicit uses on non-variadic
// instructions. This is used by call and return instructions passing
// arguments in registers.
bool Imp = II && (IIOpNum >= II->getNumOperands() && !II->isVariadic());
MI->addOperand(MachineOperand::CreateReg(R->getReg(), false, Imp));
MIB.addReg(R->getReg(), getImplRegState(Imp));
} else if (RegisterMaskSDNode *RM = dyn_cast<RegisterMaskSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateRegMask(RM->getRegMask()));
MIB.addRegMask(RM->getRegMask());
} else if (GlobalAddressSDNode *TGA = dyn_cast<GlobalAddressSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateGA(TGA->getGlobal(), TGA->getOffset(),
TGA->getTargetFlags()));
MIB.addGlobalAddress(TGA->getGlobal(), TGA->getOffset(),
TGA->getTargetFlags());
} else if (BasicBlockSDNode *BBNode = dyn_cast<BasicBlockSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateMBB(BBNode->getBasicBlock()));
MIB.addMBB(BBNode->getBasicBlock());
} else if (FrameIndexSDNode *FI = dyn_cast<FrameIndexSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateFI(FI->getIndex()));
MIB.addFrameIndex(FI->getIndex());
} else if (JumpTableSDNode *JT = dyn_cast<JumpTableSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateJTI(JT->getIndex(),
JT->getTargetFlags()));
MIB.addJumpTableIndex(JT->getIndex(), JT->getTargetFlags());
} else if (ConstantPoolSDNode *CP = dyn_cast<ConstantPoolSDNode>(Op)) {
int Offset = CP->getOffset();
unsigned Align = CP->getAlignment();
@ -404,24 +403,20 @@ void InstrEmitter::AddOperand(MachineInstr *MI, SDValue Op,
Idx = MCP->getConstantPoolIndex(CP->getMachineCPVal(), Align);
else
Idx = MCP->getConstantPoolIndex(CP->getConstVal(), Align);
MI->addOperand(MachineOperand::CreateCPI(Idx, Offset,
CP->getTargetFlags()));
MIB.addConstantPoolIndex(Idx, Offset, CP->getTargetFlags());
} else if (ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateES(ES->getSymbol(),
ES->getTargetFlags()));
MIB.addExternalSymbol(ES->getSymbol(), ES->getTargetFlags());
} else if (BlockAddressSDNode *BA = dyn_cast<BlockAddressSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateBA(BA->getBlockAddress(),
BA->getOffset(),
BA->getTargetFlags()));
MIB.addBlockAddress(BA->getBlockAddress(),
BA->getOffset(),
BA->getTargetFlags());
} else if (TargetIndexSDNode *TI = dyn_cast<TargetIndexSDNode>(Op)) {
MI->addOperand(MachineOperand::CreateTargetIndex(TI->getIndex(),
TI->getOffset(),
TI->getTargetFlags()));
MIB.addTargetIndex(TI->getIndex(), TI->getOffset(), TI->getTargetFlags());
} else {
assert(Op.getValueType() != MVT::Other &&
Op.getValueType() != MVT::Glue &&
"Chain and glue operands should occur at end of operand list!");
AddRegisterOperand(MI, Op, IIOpNum, II, VRBaseMap,
AddRegisterOperand(MIB, Op, IIOpNum, II, VRBaseMap,
IsDebug, IsClone, IsCloned);
}
}
@ -542,22 +537,22 @@ void InstrEmitter::EmitSubregNode(SDNode *Node,
VRBase = MRI->createVirtualRegister(SRC);
// Create the insert_subreg or subreg_to_reg machine instruction.
MachineInstr *MI = BuildMI(*MF, Node->getDebugLoc(), TII->get(Opc));
MI->addOperand(MachineOperand::CreateReg(VRBase, true));
MachineInstrBuilder MIB =
BuildMI(*MF, Node->getDebugLoc(), TII->get(Opc), VRBase);
// If creating a subreg_to_reg, then the first input operand
// is an implicit value immediate, otherwise it's a register
if (Opc == TargetOpcode::SUBREG_TO_REG) {
const ConstantSDNode *SD = cast<ConstantSDNode>(N0);
MI->addOperand(MachineOperand::CreateImm(SD->getZExtValue()));
MIB.addImm(SD->getZExtValue());
} else
AddOperand(MI, N0, 0, 0, VRBaseMap, /*IsDebug=*/false,
AddOperand(MIB, N0, 0, 0, VRBaseMap, /*IsDebug=*/false,
IsClone, IsCloned);
// Add the subregster being inserted
AddOperand(MI, N1, 0, 0, VRBaseMap, /*IsDebug=*/false,
AddOperand(MIB, N1, 0, 0, VRBaseMap, /*IsDebug=*/false,
IsClone, IsCloned);
MI->addOperand(MachineOperand::CreateImm(SubIdx));
MBB->insert(InsertPos, MI);
MIB.addImm(SubIdx);
MBB->insert(InsertPos, MIB);
} else
llvm_unreachable("Node is not insert_subreg, extract_subreg, or subreg_to_reg");
@ -598,12 +593,11 @@ void InstrEmitter::EmitRegSequence(SDNode *Node,
unsigned DstRCIdx = cast<ConstantSDNode>(Node->getOperand(0))->getZExtValue();
const TargetRegisterClass *RC = TRI->getRegClass(DstRCIdx);
unsigned NewVReg = MRI->createVirtualRegister(TRI->getAllocatableClass(RC));
MachineInstr *MI = BuildMI(*MF, Node->getDebugLoc(),
TII->get(TargetOpcode::REG_SEQUENCE), NewVReg);
const MCInstrDesc &II = TII->get(TargetOpcode::REG_SEQUENCE);
MachineInstrBuilder MIB = BuildMI(*MF, Node->getDebugLoc(), II, NewVReg);
unsigned NumOps = Node->getNumOperands();
assert((NumOps & 1) == 1 &&
"REG_SEQUENCE must have an odd number of operands!");
const MCInstrDesc &II = TII->get(TargetOpcode::REG_SEQUENCE);
for (unsigned i = 1; i != NumOps; ++i) {
SDValue Op = Node->getOperand(i);
if ((i & 1) == 0) {
@ -622,11 +616,11 @@ void InstrEmitter::EmitRegSequence(SDNode *Node,
}
}
}
AddOperand(MI, Op, i+1, &II, VRBaseMap, /*IsDebug=*/false,
AddOperand(MIB, Op, i+1, &II, VRBaseMap, /*IsDebug=*/false,
IsClone, IsCloned);
}
MBB->insert(InsertPos, MI);
MBB->insert(InsertPos, MIB);
SDValue Op(Node, 0);
bool isNew = VRBaseMap.insert(std::make_pair(Op, NewVReg)).second;
(void)isNew; // Silence compiler warning.
@ -663,7 +657,7 @@ InstrEmitter::EmitDbgValue(SDDbgValue *SD,
if (I==VRBaseMap.end())
MIB.addReg(0U); // undef
else
AddOperand(&*MIB, Op, (*MIB).getNumOperands(), &II, VRBaseMap,
AddOperand(MIB, Op, (*MIB).getNumOperands(), &II, VRBaseMap,
/*IsDebug=*/true, /*IsClone=*/false, /*IsCloned=*/false);
} else if (SD->getKind() == SDDbgValue::CONST) {
const Value *V = SD->getConst();
@ -739,12 +733,12 @@ EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
#endif
// Create the new machine instruction.
MachineInstr *MI = BuildMI(*MF, Node->getDebugLoc(), II);
MachineInstrBuilder MIB = BuildMI(*MF, Node->getDebugLoc(), II);
// Add result register values for things that are defined by this
// instruction.
if (NumResults)
CreateVirtualRegisters(Node, MI, II, IsClone, IsCloned, VRBaseMap);
CreateVirtualRegisters(Node, MIB, II, IsClone, IsCloned, VRBaseMap);
// Emit all of the actual operands of this instruction, adding them to the
// instruction as appropriate.
@ -753,17 +747,17 @@ EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
"Unable to cope with optional defs and phys regs defs!");
unsigned NumSkip = HasOptPRefs ? II.getNumDefs() - NumResults : 0;
for (unsigned i = NumSkip; i != NodeOperands; ++i)
AddOperand(MI, Node->getOperand(i), i-NumSkip+II.getNumDefs(), &II,
AddOperand(MIB, Node->getOperand(i), i-NumSkip+II.getNumDefs(), &II,
VRBaseMap, /*IsDebug=*/false, IsClone, IsCloned);
// Transfer all of the memory reference descriptions of this instruction.
MI->setMemRefs(cast<MachineSDNode>(Node)->memoperands_begin(),
MIB.setMemRefs(cast<MachineSDNode>(Node)->memoperands_begin(),
cast<MachineSDNode>(Node)->memoperands_end());
// Insert the instruction into position in the block. This needs to
// happen before any custom inserter hook is called so that the
// hook knows where in the block to insert the replacement code.
MBB->insert(InsertPos, MI);
MBB->insert(InsertPos, MIB);
// The MachineInstr may also define physregs instead of virtregs. These
// physreg values can reach other instructions in different ways:
@ -821,13 +815,13 @@ EmitMachineNode(SDNode *Node, bool IsClone, bool IsCloned,
// Finally mark unused registers as dead.
if (!UsedRegs.empty() || II.getImplicitDefs())
MI->setPhysRegsDeadExcept(UsedRegs, *TRI);
MIB->setPhysRegsDeadExcept(UsedRegs, *TRI);
// Run post-isel target hook to adjust this instruction if needed.
#ifdef NDEBUG
if (II.hasPostISelHook())
#endif
TLI->AdjustInstrPostInstrSelection(MI, Node);
TLI->AdjustInstrPostInstrSelection(MIB, Node);
}
/// EmitSpecialNode - Generate machine code for a target-independent node and
@ -891,20 +885,20 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
--NumOps; // Ignore the glue operand.
// Create the inline asm machine instruction.
MachineInstr *MI = BuildMI(*MF, Node->getDebugLoc(),
TII->get(TargetOpcode::INLINEASM));
MachineInstrBuilder MIB = BuildMI(*MF, Node->getDebugLoc(),
TII->get(TargetOpcode::INLINEASM));
// Add the asm string as an external symbol operand.
SDValue AsmStrV = Node->getOperand(InlineAsm::Op_AsmString);
const char *AsmStr = cast<ExternalSymbolSDNode>(AsmStrV)->getSymbol();
MI->addOperand(MachineOperand::CreateES(AsmStr));
MIB.addExternalSymbol(AsmStr);
// Add the HasSideEffect, isAlignStack, AsmDialect, MayLoad and MayStore
// bits.
int64_t ExtraInfo =
cast<ConstantSDNode>(Node->getOperand(InlineAsm::Op_ExtraInfo))->
getZExtValue();
MI->addOperand(MachineOperand::CreateImm(ExtraInfo));
MIB.addImm(ExtraInfo);
// Remember to operand index of the group flags.
SmallVector<unsigned, 8> GroupIdx;
@ -915,8 +909,8 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
cast<ConstantSDNode>(Node->getOperand(i))->getZExtValue();
const unsigned NumVals = InlineAsm::getNumOperandRegisters(Flags);
GroupIdx.push_back(MI->getNumOperands());
MI->addOperand(MachineOperand::CreateImm(Flags));
GroupIdx.push_back(MIB->getNumOperands());
MIB.addImm(Flags);
++i; // Skip the ID value.
switch (InlineAsm::getKind(Flags)) {
@ -927,20 +921,16 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
// FIXME: Add dead flags for physical and virtual registers defined.
// For now, mark physical register defs as implicit to help fast
// regalloc. This makes inline asm look a lot like calls.
MI->addOperand(MachineOperand::CreateReg(Reg, true,
/*isImp=*/ TargetRegisterInfo::isPhysicalRegister(Reg)));
MIB.addReg(Reg, RegState::Define |
getImplRegState(TargetRegisterInfo::isPhysicalRegister(Reg)));
}
break;
case InlineAsm::Kind_RegDefEarlyClobber:
case InlineAsm::Kind_Clobber:
for (unsigned j = 0; j != NumVals; ++j, ++i) {
unsigned Reg = cast<RegisterSDNode>(Node->getOperand(i))->getReg();
MI->addOperand(MachineOperand::CreateReg(Reg, /*isDef=*/ true,
/*isImp=*/ TargetRegisterInfo::isPhysicalRegister(Reg),
/*isKill=*/ false,
/*isDead=*/ false,
/*isUndef=*/false,
/*isEarlyClobber=*/ true));
MIB.addReg(Reg, RegState::Define | RegState::EarlyClobber |
getImplRegState(TargetRegisterInfo::isPhysicalRegister(Reg)));
}
break;
case InlineAsm::Kind_RegUse: // Use of register.
@ -949,7 +939,7 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
// The addressing mode has been selected, just add all of the
// operands to the machine instruction.
for (unsigned j = 0; j != NumVals; ++j, ++i)
AddOperand(MI, Node->getOperand(i), 0, 0, VRBaseMap,
AddOperand(MIB, Node->getOperand(i), 0, 0, VRBaseMap,
/*IsDebug=*/false, IsClone, IsCloned);
// Manually set isTied bits.
@ -959,7 +949,7 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
unsigned DefIdx = GroupIdx[DefGroup] + 1;
unsigned UseIdx = GroupIdx.back() + 1;
for (unsigned j = 0; j != NumVals; ++j)
MI->tieOperands(DefIdx + j, UseIdx + j);
MIB->tieOperands(DefIdx + j, UseIdx + j);
}
}
break;
@ -970,9 +960,9 @@ EmitSpecialNode(SDNode *Node, bool IsClone, bool IsCloned,
SDValue MDV = Node->getOperand(InlineAsm::Op_MDNode);
const MDNode *MD = cast<MDNodeSDNode>(MDV)->getMD();
if (MD)
MI->addOperand(MachineOperand::CreateMetadata(MD));
MIB.addMetadata(MD);
MBB->insert(InsertPos, MI);
MBB->insert(InsertPos, MIB);
break;
}
}

10
lib/CodeGen/SelectionDAG/InstrEmitter.h
View File

@ -22,6 +22,7 @@
namespace llvm {
class MachineInstrBuilder;
class MCInstrDesc;
class SDDbgValue;
@ -48,7 +49,8 @@ class InstrEmitter {
unsigned getDstOfOnlyCopyToRegUse(SDNode *Node,
unsigned ResNo) const;
void CreateVirtualRegisters(SDNode *Node, MachineInstr *MI,
void CreateVirtualRegisters(SDNode *Node,
MachineInstrBuilder &MIB,
const MCInstrDesc &II,
bool IsClone, bool IsCloned,
DenseMap<SDValue, unsigned> &VRBaseMap);
@ -61,7 +63,8 @@ class InstrEmitter {
/// AddRegisterOperand - Add the specified register as an operand to the
/// specified machine instr. Insert register copies if the register is
/// not in the required register class.
void AddRegisterOperand(MachineInstr *MI, SDValue Op,
void AddRegisterOperand(MachineInstrBuilder &MIB,
SDValue Op,
unsigned IIOpNum,
const MCInstrDesc *II,
DenseMap<SDValue, unsigned> &VRBaseMap,
@ -71,7 +74,8 @@ class InstrEmitter {
/// specifies the instruction information for the node, and IIOpNum is the
/// operand number (in the II) that we are adding. IIOpNum and II are used for
/// assertions only.
void AddOperand(MachineInstr *MI, SDValue Op,
void AddOperand(MachineInstrBuilder &MIB,
SDValue Op,
unsigned IIOpNum,
const MCInstrDesc *II,
DenseMap<SDValue, unsigned> &VRBaseMap,