MachineInstr.cpp revision df3b99381f1c211071cc1daf0cc297666877bbcb
1e138b3dd1ff02d826233482831318708a166ed93Chris Lattner//===-- lib/CodeGen/MachineInstr.cpp --------------------------------------===// 2edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 3b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// The LLVM Compiler Infrastructure 4b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell// 54ee451de366474b9c228b4e5fa573795a715216dChris Lattner// This file is distributed under the University of Illinois Open Source 64ee451de366474b9c228b4e5fa573795a715216dChris Lattner// License. See LICENSE.TXT for details. 7edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman// 8b576c94c15af9a440f69d9d03c2afead7971118cJohn Criswell//===----------------------------------------------------------------------===// 921326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke// 1021326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke// Methods common to all machine instructions. 1121326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke// 12035dfbe7f2d109008d2d62d9f2a67efb477a7ab6Chris Lattner//===----------------------------------------------------------------------===// 1370bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 14e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman#include "llvm/Constants.h" 15822b4fb896846b87dd11a330ae13f2239329aeefChris Lattner#include "llvm/CodeGen/MachineInstr.h" 1684bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/Value.h" 178517e1f0beea9b5e47974f083396d53294c390adChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner#include "llvm/CodeGen/MachineRegisterInfo.h" 1969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 201049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner#include "llvm/Target/TargetMachine.h" 21bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng#include "llvm/Target/TargetInstrInfo.h" 22f14cf85e334ff03bbdd23e473f14ffa4fb025e94Chris Lattner#include "llvm/Target/TargetInstrDesc.h" 236f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman#include "llvm/Target/TargetRegisterInfo.h" 242c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman#include "llvm/Support/LeakDetector.h" 25ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman#include "llvm/Support/MathExtras.h" 26a09362eb975730ac624c0bd210a95655ee105296Bill Wendling#include "llvm/Support/Streams.h" 27edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner#include "llvm/Support/raw_ostream.h" 28b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman#include "llvm/ADT/FoldingSet.h" 29c21c5eeb4f56f160e79522df2d3aab5cfe73c05dJeff Cohen#include <ostream> 300742b59913a7760eb26f08121cd244a37e83e3b3Chris Lattnerusing namespace llvm; 31d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 32f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 33f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineOperand Implementation 34f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 35f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 3662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandToRegInfo - Add this register operand to the specified 3762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// MachineRegisterInfo. If it is null, then the next/prev fields should be 3862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// explicitly nulled out. 3962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo) { 4062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(isReg() && "Can only add reg operand to use lists"); 4162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 4262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the reginfo pointer is null, just explicitly null out or next/prev 4362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // pointers, to ensure they are not garbage. 4462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 4562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Prev = 0; 4662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next = 0; 4762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 4862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 4962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, add this operand to the head of the registers use/def list. 5180fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner MachineOperand **Head = &RegInfo->getRegUseDefListHead(getReg()); 5262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5380fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // For SSA values, we prefer to keep the definition at the start of the list. 5480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // we do this by skipping over the definition if it is at the head of the 5580fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // list. 5680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner if (*Head && (*Head)->isDef()) 5780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Head = &(*Head)->Contents.Reg.Next; 5880fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner 5980fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Next = *Head; 6062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Contents.Reg.Next) { 6162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(getReg() == Contents.Reg.Next->getReg() && 6262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Different regs on the same list!"); 6362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next->Contents.Reg.Prev = &Contents.Reg.Next; 6462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 6562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 6680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Prev = Head; 6780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner *Head = this; 6862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 6962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::setReg(unsigned Reg) { 7162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (getReg() == Reg) return; // No change. 7262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to change the register. If this operand is embedded 7462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // into a machine function, we need to update the old and new register's 7562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // use/def lists. 7662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 7762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 7862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) { 7962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 8062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 8162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 8262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 8362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 8462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 8562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, just change the register, no problem. :) 8662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 8762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 8862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 8962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToImmediate - Replace this operand with a new immediate operand of 9062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an immediate already, 9162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setImm method should be used. 9262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToImmediate(int64_t ImmVal) { 9362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is currently a register operand, and if this is in a 9462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // function, deregister the operand from the register's use/def list. 9562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isReg() && getParent() && getParent()->getParent() && 9662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner getParent()->getParent()->getParent()) 9762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 9862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 9962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Immediate; 10062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.ImmVal = ImmVal; 10162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 10262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToRegister - Replace this operand with a new register operand of 10462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an register already, 10562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setReg method should be used. 10662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp, 10762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner bool isKill, bool isDead) { 10862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is already a register operand, use setReg to update the 10962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def lists. 11062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isReg()) { 11162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner setReg(Reg); 11262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 11362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, change this to a register and set the reg#. 11462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Register; 11562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 11662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 11762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is embedded in a function, add the operand to the 11862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def list. 11962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 12062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 12162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) 12262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 12362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 12462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 12562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDef = isDef; 12662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsImp = isImp; 12762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsKill = isKill; 12862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDead = isDead; 12962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner SubReg = 0; 13062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 13162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 132f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// isIdenticalTo - Return true if this operand is identical to the specified 133f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// operand. 134f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnerbool MachineOperand::isIdenticalTo(const MachineOperand &Other) const { 135f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getType() != Other.getType()) return false; 136f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 137f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 138f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: assert(0 && "Unrecognized operand type"); 139f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 140f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getReg() == Other.getReg() && isDef() == Other.isDef() && 141f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getSubReg() == Other.getSubReg(); 142f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 143f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getImm() == Other.getImm(); 144e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 145e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman return getFPImm() == Other.getFPImm(); 146f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 147f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getMBB() == Other.getMBB(); 148f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 1498aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 150f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 1518aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex() && getOffset() == Other.getOffset(); 152f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 1538aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 154f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 155f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset(); 156f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 157f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return !strcmp(getSymbolName(), Other.getSymbolName()) && 158f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOffset() == Other.getOffset(); 159f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 160f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 161f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 162f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// print - Print the specified machine operand. 163f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// 164f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnervoid MachineOperand::print(std::ostream &OS, const TargetMachine *TM) const { 165f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 166f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 1676f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman if (getReg() == 0 || TargetRegisterInfo::isVirtualRegister(getReg())) { 168f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%reg" << getReg(); 169f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else { 170f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner // If the instruction is embedded into a basic block, we can find the 17162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // target info for the instruction. 172f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM == 0) 173f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineInstr *MI = getParent()) 174f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineBasicBlock *MBB = MI->getParent()) 175f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineFunction *MF = MBB->getParent()) 176f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner TM = &MF->getTarget(); 177f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 178f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM) 179e6d088acc90e422451e098555d383d4d65b6ce6bBill Wendling OS << "%" << TM->getRegisterInfo()->get(getReg()).Name; 180f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner else 181f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%mreg" << getReg(); 182f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 183f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 184f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (isDef() || isKill() || isDead() || isImplicit()) { 185f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<"; 186f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner bool NeedComma = false; 187f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (isImplicit()) { 188f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << (isDef() ? "imp-def" : "imp-use"); 189f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 190f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else if (isDef()) { 191f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "def"; 192f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 193f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 194f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (isKill() || isDead()) { 195181eb737b28628adc4376b973610a02039385026Bill Wendling if (NeedComma) OS << ","; 196181eb737b28628adc4376b973610a02039385026Bill Wendling if (isKill()) OS << "kill"; 197181eb737b28628adc4376b973610a02039385026Bill Wendling if (isDead()) OS << "dead"; 198f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 199f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 200f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 201f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 202f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 203f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << getImm(); 204f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 205e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 206e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman if (getFPImm()->getType() == Type::FloatTy) { 207e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToFloat(); 208e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman } else { 209e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToDouble(); 210e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman } 211e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman break; 212f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 213f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "mbb<" 2148aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner << ((Value*)getMBB()->getBasicBlock())->getName() 2158aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner << "," << (void*)getMBB() << ">"; 216f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 217f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 2188aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<fi#" << getIndex() << ">"; 219f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 220f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2218aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<cp#" << getIndex(); 222f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 223f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 224f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 225f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 2268aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<jt#" << getIndex() << ">"; 227f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 228f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 229f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<ga:" << ((Value*)getGlobal())->getName(); 230f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 231f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 232f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 233f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 234f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<es:" << getSymbolName(); 235f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 236f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 237f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 238f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: 239f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner assert(0 && "Unrecognized operand type"); 240f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 241f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 242f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 243f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 244ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman// MachineMemOperand Implementation 245ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 246ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 247ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan GohmanMachineMemOperand::MachineMemOperand(const Value *v, unsigned int f, 248ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman int64_t o, uint64_t s, unsigned int a) 249ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman : Offset(o), Size(s), V(v), 250ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman Flags((f & 7) | ((Log2_32(a) + 1) << 3)) { 251f1bf29e648a25a440d3dcf5a445b30c4129c9bcaDan Gohman assert(isPowerOf2_32(a) && "Alignment is not a power of 2!"); 252c5e1f98fdf44993c2bfe4c1ef633b2358cd718c1Dan Gohman assert((isLoad() || isStore()) && "Not a load/store!"); 253ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman} 254ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 255b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// Profile - Gather unique data for the object. 256b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// 257b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohmanvoid MachineMemOperand::Profile(FoldingSetNodeID &ID) const { 258b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Offset); 259b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Size); 260b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddPointer(V); 261b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Flags); 262b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman} 263b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman 264ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 265f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineInstr Implementation 266f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 267f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 268c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// MachineInstr ctor - This constructor creates a dummy MachineInstr with 26967f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng/// TID NULL and no operands. 270c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr() 271f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner : TID(0), NumImplicitOps(0), Parent(0) { 2722c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 2732c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 2747279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner} 2757279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner 27667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Chengvoid MachineInstr::addImplicitDefUseOperands() { 27767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 278a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpDefs = TID->ImplicitDefs; *ImpDefs; ++ImpDefs) 2798019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpDefs, true, true)); 28067f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 281a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpUses = TID->ImplicitUses; *ImpUses; ++ImpUses) 2828019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpUses, false, true)); 283d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 284d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 285d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng/// MachineInstr ctor - This constructor create a MachineInstr and add the 286c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// implicit operands. It reserves space for number of operands specified by 287749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner/// TargetInstrDesc or the numOperands if it is not zero. (for 288c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// instructions with variable number of operands). 289749c6f6b5ed301c84aac562e414486549d7b98ebChris LattnerMachineInstr::MachineInstr(const TargetInstrDesc &tid, bool NoImp) 290f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner : TID(&tid), NumImplicitOps(0), Parent(0) { 291349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitDefs()) 292349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 293d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 294349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitUses()) 295349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 296d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 297349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 298fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 299fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 3002c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3012c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 302d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 303d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 304ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// MachineInstr ctor - Work exactly the same as the ctor above, except that the 305ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// MachineInstr is created and added to the end of the specified basic block. 306ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 307c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr(MachineBasicBlock *MBB, 308749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 309f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner : TID(&tid), NumImplicitOps(0), Parent(0) { 310ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 31167f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 312349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 313d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 31467f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 315349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 316d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 317349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 31867f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 3192c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3202c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 321ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 322ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 323ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 324ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 325ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 3261ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 3271ed9922794cda9dbe295e74674b909287e544632Evan Cheng : TID(&MI.getDesc()), NumImplicitOps(0), Parent(0) { 328943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 329b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 330ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 3311ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 3321ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 3331ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 3340c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 3358e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Add memory operands. 336fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman for (std::list<MachineMemOperand>::const_iterator i = MI.memoperands_begin(), 3378e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman j = MI.memoperands_end(); i != j; ++i) 3388e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman addMemOperand(MF, *i); 3398e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 3408e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 341f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 3426116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 3436116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 344466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 345466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 346ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 3472c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 3488e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(MemOperands.empty() && 3498e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman "MachineInstr being deleted with live memoperands!"); 350e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 35162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 352e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 35362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 35462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 35562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 356e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 357aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 358aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 35962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 36062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 36162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 36262ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 36362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 3644e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 36562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 36662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 36762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 36862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 36962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 37062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 37162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 37262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 37362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[i].isReg()) 37462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 37562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 37662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 37762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 37862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 37962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 38062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 38162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 38262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 38362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[i].isReg()) 38462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 38562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 38662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 38762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 38862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 38962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 39062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 39162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 39262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 39362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 39462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner bool isImpReg = Op.isReg() && Op.isImplicit(); 39562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 39662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 39762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 39862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 39962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 40062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 40162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 40262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 40362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 40462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 40562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 40662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 40762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 40862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 40962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 41062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Op.isReg()) 41162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().AddRegOperandToRegInfo(getRegInfo()); 41262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 41362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 41462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 41562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 41662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 41762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 41862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 41962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 42062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 42162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 42262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 42362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 42462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 42562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 42662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 42762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 42862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 42962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 43062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[OpNo].isReg()) 43162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 43262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 43362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 43462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 43562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 43662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 43762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 43862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 43962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 44062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 44162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 44262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 44362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(Operands[i].isReg() && "Should only be an implicit reg!"); 44462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 44562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 44662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 44762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 44862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 44962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 45062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 45162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[OpNo].isReg()) 45262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 45362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 45462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 45562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 45662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(Operands[i].isReg() && "Should only be an implicit reg!"); 45762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 45862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 45962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 46062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 46162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 46262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 46362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 46462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 46562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 46662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 46762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 46862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 46962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 47062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 47162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 47262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 47362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 47462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 47562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 47662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 47762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 47862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 47962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 48062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 48162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 48262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 48362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 48462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 48562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 48662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 48762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 48862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 48962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 49062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 49162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 49262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 49362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 49462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 49562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[i].isReg()) 49662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 49762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 49862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 49962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 50062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 50162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 50262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 50362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 50462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands[i].isReg()) 50562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 50662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 50762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 50862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 50962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5108e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction, 5118e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// referencing arbitrary storage. 5128e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 5138e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman const MachineMemOperand &MO) { 514fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman MemOperands.push_back(MO); 5158e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5168e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 5178e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// clearMemOperands - Erase all of this MachineInstr's MachineMemOperands. 5188e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::clearMemOperands(MachineFunction &MF) { 519fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman MemOperands.clear(); 5208e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5218e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52348d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 52448d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 52548d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 52648d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 52748d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 52848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 52948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 53048d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 53148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 5328e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 5338e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 5348e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 5358e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 5368e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 5378e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5388e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 5398e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 54021326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 54121326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 5422a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 543349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 5448f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 5453497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 546413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 54770bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 54870bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 54919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 55019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 55119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 552349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 5538f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 55419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 55519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 55619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned e = getNumOperands(); NumOperands != e; ++NumOperands) { 55719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng const MachineOperand &MO = getOperand(NumOperands); 55819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng if (!MO.isRegister() || !MO.isImplicit()) 55919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 56019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 56119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 56219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 56319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 5648ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 5654406604047423576e36657c7ede266ca42e79642Dan Gohman/// isLabel - Returns true if the MachineInstr represents a label. 5664406604047423576e36657c7ede266ca42e79642Dan Gohman/// 5674406604047423576e36657c7ede266ca42e79642Dan Gohmanbool MachineInstr::isLabel() const { 5684406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL || 5694406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::EH_LABEL || 5704406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::GC_LABEL; 5714406604047423576e36657c7ede266ca42e79642Dan Gohman} 5724406604047423576e36657c7ede266ca42e79642Dan Gohman 573bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// isDebugLabel - Returns true if the MachineInstr represents a debug label. 574bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// 575bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Chengbool MachineInstr::isDebugLabel() const { 5764406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL; 577bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng} 578bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng 579faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 58032eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng/// the specific register or -1 if it is not found. It further tightening 58176d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 5826130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 5836130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 584576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 585f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 5866130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MO.isRegister() || !MO.isUse()) 5876130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 5886130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 5896130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 5906130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 5916130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 5926130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 5936130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 5946130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 5956130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 59676d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 59732eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 598b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 59932eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 600b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 601b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 6026130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 603703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 604703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 605703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 6066130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, 6076130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 608b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 6096130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 6106130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MO.isRegister() || !MO.isDef()) 6116130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 6126130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 6136130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 6146130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 6156130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 6166130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 6176130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 6186130f66eaae89f8878590796977678afa8448926Evan Cheng if (!isDead || MO.isDead()) 6196130f66eaae89f8878590796977678afa8448926Evan Cheng return i; 620576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 6216130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 622576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 62319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 624f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 625f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 626f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 627f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 628749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 629749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 63019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 631749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 632f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 63319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 63419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 635f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 63619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 637576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 638ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng/// isRegReDefinedByTwoAddr - Given the defined register and the operand index, 639ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng/// check if the register def is a re-definition due to two addr elimination. 640ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Chengbool MachineInstr::isRegReDefinedByTwoAddr(unsigned Reg, unsigned DefIdx) const{ 641749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 642ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 643ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 644ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng if (MO.isRegister() && MO.isUse() && MO.getReg() == Reg && 645ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefIdx) 646ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 64732dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 64832dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 64932dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 65032dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 651576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 652576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 653576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 654576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 655576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 65692dfe2001e96f6e2b6d327e8816f38033f88b295Dan Gohman if (!MO.isRegister() || (!MO.isKill() && !MO.isDead())) 657576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 658576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 659576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 660576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 661576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 662576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 663576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 664576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 665576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 666576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 667576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 668576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 669576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 670576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 67119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 67219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 673749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 674b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 675b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 676b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 677b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 678b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 679b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 68019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 68119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 68219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 68319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 6849f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 6859f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 6869f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 687b27087f5aa574f875598f4a309b7dd687c64a455Evan Chengbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, bool &SawStore) { 688b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 689b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 690b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 691b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 692b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 693b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->isReturn() || TID->isBranch() || TID->hasUnmodeledSideEffects()) 694b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 695b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 696b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 697b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 698b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 699b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 700b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 701b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayLoad() && !TII->isInvariantLoad(this)) { 702b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 703b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // end of block, we can't sink the load. 704b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // 705b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // FIXME: we can't do this transformation until we know that the load is 706b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // not volatile, and machineinstrs don't keep this info. :( 707b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // 708b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng //if (SawStore) 709b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 710b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 711b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 712b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 713b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 714df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 715df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 716df3b99381f1c211071cc1daf0cc297666877bbcbEvan Chengbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, unsigned DstReg) { 717df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (!TID->isAsCheapAsAMove()) 718df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 719df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 720df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (!isSafeToMove(TII, SawStore)) 721df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 722df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 723df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng MachineOperand &MO = getOperand(i); 724df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (!MO.isRegister()) 725df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 726df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 727df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 728df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 729df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // MachineSink because the code in no longer in two-address form (at least 730df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 731df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 732df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 733df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 734df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 735df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 736df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 737df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 738df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 73921326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 740e81561909d128c6e2d8033cb5465a49b2596b26aBill Wendling cerr << " " << *this; 74170bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 74270bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 743b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattnervoid MachineInstr::print(std::ostream &OS, const TargetMachine *TM) const { 744e3087890ac7f2fcf4697f8e09091e9a384311b9cChris Lattner // Specialize printing if op#0 is definition 7456a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner unsigned StartOp = 0; 74692dfe2001e96f6e2b6d327e8816f38033f88b295Dan Gohman if (getNumOperands() && getOperand(0).isRegister() && getOperand(0).isDef()) { 747f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOperand(0).print(OS, TM); 7486a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " = "; 7496a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner ++StartOp; // Don't print this operand again! 7506a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 751b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 752749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 753edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 7546a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 7556a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner if (i != StartOp) 7566a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << ","; 7576a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 758f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOperand(i).print(OS, TM); 7591049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 760edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 7618e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 7622bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << ", Mem:"; 763fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman for (std::list<MachineMemOperand>::const_iterator i = memoperands_begin(), 7648e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman e = memoperands_end(); i != e; ++i) { 7658e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman const MachineMemOperand &MRO = *i; 76669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman const Value *V = MRO.getValue(); 76769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 76869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman assert((MRO.isLoad() || MRO.isStore()) && 76969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman "SV has to be a load, store or both."); 77069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 77169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isVolatile()) 77269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman OS << "Volatile "; 7732bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman 77469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isLoad()) 7752bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "LD"; 77669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isStore()) 7772bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "ST"; 77869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 779bbd8322daaefa70ba1a282956df5f977e783524bEvan Cheng OS << "(" << MRO.getSize() << "," << MRO.getAlignment() << ") ["; 78069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 7812bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman if (!V) 7822bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "<unknown>"; 7832bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman else if (!V->getName().empty()) 7842bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << V->getName(); 785edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner else if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) { 786edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner raw_os_ostream OSS(OS); 787edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner PSV->print(OSS); 788edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner } else 7892bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << V; 7902bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman 7912bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << " + " << MRO.getOffset() << "]"; 79269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 79369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 79469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 7951049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 7961049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 7971049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 798b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 7996f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 800b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 8019b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 8022ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 8039b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 8044a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 8054a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 8069b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!MO.isRegister() || !MO.isUse()) 8079b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 8089b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 8099b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 8109b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 8114a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 8129b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 8132ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman MO.setIsKill(); 8142ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 8152ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman } 8162ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (hasAliases && MO.isKill() && 8172ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 8189b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 8199b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 8202ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 8212ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 8229b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 823b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 824b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 825b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 8269b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 8279b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 8289b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 8299b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 8309b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 8319b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 8329b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 8339b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 8349b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 8359b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 8364a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 837b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 8382ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (AddIfNotFound) { 8394a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 8404a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 8414a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 8424a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 843b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 844b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 8452ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return false; 846b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 847b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 848b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 8496f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 850b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 8519b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 85201b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 8539b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 854b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 855b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 8569b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!MO.isRegister() || !MO.isDef()) 8579b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 8589b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 8599b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 8609b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng MO.setIsDead(); 8612ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 8622ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman } 8632ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (hasAliases && MO.isDead() && 8642ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 8659b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 8669b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 8672ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 86822ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 86922ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 87022ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 8719b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 872b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 873b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 874b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 8759b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 8769b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 8779b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 8789b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 8799b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 8809b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 8819b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 8829b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 8839b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 8849b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 885b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // If not found, this means an alias of one of the operand is dead. Add a 886b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand. 8872ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (AddIfNotFound) { 888b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson addOperand(MachineOperand::CreateReg(IncomingReg, true/*IsDef*/, 889b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson true/*IsImp*/,false/*IsKill*/, 890b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson true/*IsDead*/)); 891b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 892b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 8932ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return false; 894b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 895