MachineInstr.cpp revision d9df5017040489303acb57bdd8697ef0f8bafc08
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 14822b4fb896846b87dd11a330ae13f2239329aeefChris Lattner#include "llvm/CodeGen/MachineInstr.h" 15fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng#include "llvm/Constants.h" 16fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng#include "llvm/InlineAsm.h" 1784bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/Value.h" 188517e1f0beea9b5e47974f083396d53294c390adChris Lattner#include "llvm/CodeGen/MachineFunction.h" 1962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner#include "llvm/CodeGen/MachineRegisterInfo.h" 2069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 211049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner#include "llvm/Target/TargetMachine.h" 22bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng#include "llvm/Target/TargetInstrInfo.h" 23f14cf85e334ff03bbdd23e473f14ffa4fb025e94Chris Lattner#include "llvm/Target/TargetInstrDesc.h" 246f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman#include "llvm/Target/TargetRegisterInfo.h" 252c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman#include "llvm/Support/LeakDetector.h" 26ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman#include "llvm/Support/MathExtras.h" 27a09362eb975730ac624c0bd210a95655ee105296Bill Wendling#include "llvm/Support/Streams.h" 28edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner#include "llvm/Support/raw_ostream.h" 29b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman#include "llvm/ADT/FoldingSet.h" 30c21c5eeb4f56f160e79522df2d3aab5cfe73c05dJeff Cohen#include <ostream> 310742b59913a7760eb26f08121cd244a37e83e3b3Chris Lattnerusing namespace llvm; 32d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 33f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 34f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineOperand Implementation 35f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 36f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 3762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandToRegInfo - Add this register operand to the specified 3862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// MachineRegisterInfo. If it is null, then the next/prev fields should be 3962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// explicitly nulled out. 4062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo) { 41d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(isReg() && "Can only add reg operand to use lists"); 4262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 4362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the reginfo pointer is null, just explicitly null out or next/prev 4462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // pointers, to ensure they are not garbage. 4562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 4662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Prev = 0; 4762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next = 0; 4862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 4962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 5062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, add this operand to the head of the registers use/def list. 5280fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner MachineOperand **Head = &RegInfo->getRegUseDefListHead(getReg()); 5362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // For SSA values, we prefer to keep the definition at the start of the list. 5580fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // we do this by skipping over the definition if it is at the head of the 5680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // list. 5780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner if (*Head && (*Head)->isDef()) 5880fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Head = &(*Head)->Contents.Reg.Next; 5980fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner 6080fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Next = *Head; 6162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Contents.Reg.Next) { 6262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(getReg() == Contents.Reg.Next->getReg() && 6362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Different regs on the same list!"); 6462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next->Contents.Reg.Prev = &Contents.Reg.Next; 6562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 6662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 6780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Prev = Head; 6880fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner *Head = this; 6962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 7062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::setReg(unsigned Reg) { 7262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (getReg() == Reg) return; // No change. 7362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to change the register. If this operand is embedded 7562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // into a machine function, we need to update the old and new register's 7662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // use/def lists. 7762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 7862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 7962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) { 8062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 8162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 8262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 8362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 8462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 8562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 8662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, just change the register, no problem. :) 8762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 8862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 8962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 9062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToImmediate - Replace this operand with a new immediate operand of 9162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an immediate already, 9262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setImm method should be used. 9362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToImmediate(int64_t ImmVal) { 9462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is currently a register operand, and if this is in a 9562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // function, deregister the operand from the register's use/def list. 96d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg() && getParent() && getParent()->getParent() && 9762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner getParent()->getParent()->getParent()) 9862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 9962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Immediate; 10162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.ImmVal = ImmVal; 10262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 10362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToRegister - Replace this operand with a new register operand of 10562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an register already, 10662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setReg method should be used. 10762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp, 108e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen bool isKill, bool isDead) { 10962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is already a register operand, use setReg to update the 11062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def lists. 111d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg()) { 112e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen assert(!isEarlyClobber()); 11362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner setReg(Reg); 11462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 11562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, change this to a register and set the reg#. 11662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Register; 11762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 11862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 11962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is embedded in a function, add the operand to the 12062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def list. 12162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 12262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 12362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) 12462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 12562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 12662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 12762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDef = isDef; 12862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsImp = isImp; 12962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsKill = isKill; 13062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDead = isDead; 131e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen IsEarlyClobber = false; 13262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner SubReg = 0; 13362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 13462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 135f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// isIdenticalTo - Return true if this operand is identical to the specified 136f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// operand. 137f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnerbool MachineOperand::isIdenticalTo(const MachineOperand &Other) const { 138f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getType() != Other.getType()) return false; 139f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 140f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 141f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: assert(0 && "Unrecognized operand type"); 142f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 143f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getReg() == Other.getReg() && isDef() == Other.isDef() && 144f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getSubReg() == Other.getSubReg(); 145f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 146f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getImm() == Other.getImm(); 147e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 148e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman return getFPImm() == Other.getFPImm(); 149f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 150f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getMBB() == Other.getMBB(); 151f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 1528aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 153f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 1548aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex() && getOffset() == Other.getOffset(); 155f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 1568aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 157f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 158f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset(); 159f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 160f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return !strcmp(getSymbolName(), Other.getSymbolName()) && 161f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOffset() == Other.getOffset(); 162f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 163f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 164f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 165f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// print - Print the specified machine operand. 166f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// 167f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnervoid MachineOperand::print(std::ostream &OS, const TargetMachine *TM) const { 1685ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang raw_os_ostream RawOS(OS); 1695ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang print(RawOS, TM); 1705ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 1715ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 1725ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const { 173f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 174f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 1756f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman if (getReg() == 0 || TargetRegisterInfo::isVirtualRegister(getReg())) { 176f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%reg" << getReg(); 177f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else { 178f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner // If the instruction is embedded into a basic block, we can find the 17962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // target info for the instruction. 180f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM == 0) 181f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineInstr *MI = getParent()) 182f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineBasicBlock *MBB = MI->getParent()) 183f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (const MachineFunction *MF = MBB->getParent()) 184f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner TM = &MF->getTarget(); 185f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 186f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM) 187e6d088acc90e422451e098555d383d4d65b6ce6bBill Wendling OS << "%" << TM->getRegisterInfo()->get(getReg()).Name; 188f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner else 189f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%mreg" << getReg(); 190f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 1912ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 1922ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman if (getSubReg() != 0) { 1932ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman OS << ":" << getSubReg(); 1942ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman } 1952ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 19686b49f8e2de796cb46c7c8b6a4c4900533fd53f4Dale Johannesen if (isDef() || isKill() || isDead() || isImplicit() || isEarlyClobber()) { 197f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<"; 198f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner bool NeedComma = false; 199f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (isImplicit()) { 20091aac1015e6714d959801dd8d60f55a72827dc4dDale Johannesen if (NeedComma) OS << ","; 201f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << (isDef() ? "imp-def" : "imp-use"); 202f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 203f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else if (isDef()) { 20491aac1015e6714d959801dd8d60f55a72827dc4dDale Johannesen if (NeedComma) OS << ","; 205913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen if (isEarlyClobber()) 206913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen OS << "earlyclobber,"; 207f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "def"; 208f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 209f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 210f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (isKill() || isDead()) { 211181eb737b28628adc4376b973610a02039385026Bill Wendling if (NeedComma) OS << ","; 212181eb737b28628adc4376b973610a02039385026Bill Wendling if (isKill()) OS << "kill"; 213181eb737b28628adc4376b973610a02039385026Bill Wendling if (isDead()) OS << "dead"; 214f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 215f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 216f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 217f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 218f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 219f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << getImm(); 220f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 221e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 222e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman if (getFPImm()->getType() == Type::FloatTy) { 223e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToFloat(); 224e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman } else { 225e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToDouble(); 226e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman } 227e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman break; 228f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 229f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "mbb<" 2308aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner << ((Value*)getMBB()->getBasicBlock())->getName() 2318aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner << "," << (void*)getMBB() << ">"; 232f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 233f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 2348aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<fi#" << getIndex() << ">"; 235f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 236f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2378aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<cp#" << getIndex(); 238f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 239f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 240f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 241f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 2428aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<jt#" << getIndex() << ">"; 243f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 244f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 245f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<ga:" << ((Value*)getGlobal())->getName(); 246f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 247f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 248f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 249f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 250f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<es:" << getSymbolName(); 251f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 252f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << ">"; 253f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 254f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: 255f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner assert(0 && "Unrecognized operand type"); 256f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 257f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 258f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 259f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 260ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman// MachineMemOperand Implementation 261ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 262ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 263ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan GohmanMachineMemOperand::MachineMemOperand(const Value *v, unsigned int f, 264ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman int64_t o, uint64_t s, unsigned int a) 265ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman : Offset(o), Size(s), V(v), 266ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman Flags((f & 7) | ((Log2_32(a) + 1) << 3)) { 267f1bf29e648a25a440d3dcf5a445b30c4129c9bcaDan Gohman assert(isPowerOf2_32(a) && "Alignment is not a power of 2!"); 268c5e1f98fdf44993c2bfe4c1ef633b2358cd718c1Dan Gohman assert((isLoad() || isStore()) && "Not a load/store!"); 269ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman} 270ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 271b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// Profile - Gather unique data for the object. 272b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// 273b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohmanvoid MachineMemOperand::Profile(FoldingSetNodeID &ID) const { 274b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Offset); 275b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Size); 276b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddPointer(V); 277b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Flags); 278b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman} 279b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman 280ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 281f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineInstr Implementation 282f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 283f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 284c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// MachineInstr ctor - This constructor creates a dummy MachineInstr with 28567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng/// TID NULL and no operands. 286c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr() 28706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(0), NumImplicitOps(0), Parent(0), debugLoc(DebugLoc::getUnknownLoc()) { 2882c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 2892c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 2907279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner} 2917279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner 29267f660cb080965ea93ed6d7265a67100f2fe38e4Evan Chengvoid MachineInstr::addImplicitDefUseOperands() { 29367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 294a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpDefs = TID->ImplicitDefs; *ImpDefs; ++ImpDefs) 2958019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpDefs, true, true)); 29667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 297a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpUses = TID->ImplicitUses; *ImpUses; ++ImpUses) 2988019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpUses, false, true)); 299d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 300d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 301d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng/// MachineInstr ctor - This constructor create a MachineInstr and add the 302c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// implicit operands. It reserves space for number of operands specified by 303749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner/// TargetInstrDesc or the numOperands if it is not zero. (for 304c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// instructions with variable number of operands). 305749c6f6b5ed301c84aac562e414486549d7b98ebChris LattnerMachineInstr::MachineInstr(const TargetInstrDesc &tid, bool NoImp) 30606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(&tid), NumImplicitOps(0), Parent(0), 30706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 308349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitDefs()) 309349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 310d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 311349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitUses()) 312349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 313d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 314349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 315fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 316fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 3172c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3182c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 319d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 320d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 32106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 32206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(const TargetInstrDesc &tid, const DebugLoc dl, 32306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp) 32406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(&tid), NumImplicitOps(0), Parent(0), debugLoc(dl) { 32506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitDefs()) 32606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 32706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 32806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitUses()) 32906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 33006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 33106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 33206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp) 33306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 33406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 33506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 33606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 33706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 33806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - Work exactly the same as the ctor two above, except 33906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// that the MachineInstr is created and added to the end of the specified 34006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// basic block. 34106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// 34206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const TargetInstrDesc &tid) 34306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(&tid), NumImplicitOps(0), Parent(0), 34406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 34506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen assert(MBB && "Cannot use inserting ctor with null basic block!"); 34606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitDefs) 34706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 34806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 34906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitUses) 35006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 35106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 35206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 35306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 35406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 35506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 35606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen MBB->push_back(this); // Add instruction to end of basic block! 35706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 35806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 35906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 360ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 36106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 362749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 36306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(&tid), NumImplicitOps(0), Parent(0), debugLoc(dl) { 364ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 36567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 366349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 367d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 36867f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 369349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 370d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 371349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 37267f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 3732c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3742c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 375ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 376ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 377ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 378ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 379ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 3801ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 38106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen : TID(&MI.getDesc()), NumImplicitOps(0), Parent(0), 38206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(MI.getDebugLoc()) { 383943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 384b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 385ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 3861ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 3871ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 3881ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 3890c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 3908e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Add memory operands. 391fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman for (std::list<MachineMemOperand>::const_iterator i = MI.memoperands_begin(), 3928e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman j = MI.memoperands_end(); i != j; ++i) 3938e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman addMemOperand(MF, *i); 3948e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 3958e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 396f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 3976116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 3986116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 399466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 400466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 401ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 4022c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 4038e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(MemOperands.empty() && 4048e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman "MachineInstr being deleted with live memoperands!"); 405e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 40662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 407e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 408d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 40962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 41062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 411e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 412aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 413aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 41462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 41562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 41662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 41762ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 41862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 4194e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 42062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 42162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 42262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 42362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 42462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 42562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 42662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 42762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 428d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 42962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 43062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 43162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 43262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 43362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 43462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 43562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 43662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 43762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 438d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 43962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 44062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 44162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 44262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 44362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 44462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 44562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 44662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 44762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 44862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 449d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman bool isImpReg = Op.isReg() && Op.isImplicit(); 45062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 45162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 45262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 453bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman MachineRegisterInfo *RegInfo = getRegInfo(); 454bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman 45562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 45662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 45762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 45862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 45962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 46062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 46162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 46262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 46362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 46462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 46562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 46662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 467d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Op.isReg()) 468bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman Operands.back().AddRegOperandToRegInfo(RegInfo); 46962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 47062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 47162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 47262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 47362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 47462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 47562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 47662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 47762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 47862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 47962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 48062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 48162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 48262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 48362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 48462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 485d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 48662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 48762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 48862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 48962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 49062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 49162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 49262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 49362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 49462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 49562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 49662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 49762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 498d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 49962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 50062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 50162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 50262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 50362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 50462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 50562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 506d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 50762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 50862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 50962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 51062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 511d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 51262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 51362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 51462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 51562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 51662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 51762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 51862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 51962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 52162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 52462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 52562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 52662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 52762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 52962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 53062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 53162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 53262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 53362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 53562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 53662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 537d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 53862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 53962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 54062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 54162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 54262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 54362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 54462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 54562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 54662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 54762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 54862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 54962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 550d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 55162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 55262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 55362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 55462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 55662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 55862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 559d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 56062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 56162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 56462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5658e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction, 5668e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// referencing arbitrary storage. 5678e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 5688e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman const MachineMemOperand &MO) { 569fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman MemOperands.push_back(MO); 5708e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5718e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 5728e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// clearMemOperands - Erase all of this MachineInstr's MachineMemOperands. 5738e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::clearMemOperands(MachineFunction &MF) { 574fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman MemOperands.clear(); 5758e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5768e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 57762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 57948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 58048d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 58148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 58248d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 58348d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 58448d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 58548d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 58648d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 5878e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 5888e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 5898e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 5908e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 5918e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 5928e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 5938e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 5948e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 59521326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 59621326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 5972a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 598349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 5998f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 6003497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 601413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 60270bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 60370bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 60419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 60519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 60619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 607349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 6088f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 60919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 61019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 61119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned e = getNumOperands(); NumOperands != e; ++NumOperands) { 61219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng const MachineOperand &MO = getOperand(NumOperands); 613d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isImplicit()) 61419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 61519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 61619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 61719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 61819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 6198ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 6204406604047423576e36657c7ede266ca42e79642Dan Gohman/// isLabel - Returns true if the MachineInstr represents a label. 6214406604047423576e36657c7ede266ca42e79642Dan Gohman/// 6224406604047423576e36657c7ede266ca42e79642Dan Gohmanbool MachineInstr::isLabel() const { 6234406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL || 6244406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::EH_LABEL || 6254406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::GC_LABEL; 6264406604047423576e36657c7ede266ca42e79642Dan Gohman} 6274406604047423576e36657c7ede266ca42e79642Dan Gohman 628bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// isDebugLabel - Returns true if the MachineInstr represents a debug label. 629bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// 630bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Chengbool MachineInstr::isDebugLabel() const { 6314406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL; 632bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng} 633bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng 634faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 63532eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng/// the specific register or -1 if it is not found. It further tightening 63676d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 6376130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 6386130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 639576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 640f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 641d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 6426130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 6436130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 6446130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 6456130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 6466130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 6476130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 6486130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 6496130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 6506130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 65176d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 65232eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 653b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 65432eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 655b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 656b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 6576130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 658703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 659703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 660703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 6616130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, 6626130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 663b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 6646130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 665d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 6666130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 6676130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 6686130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 6696130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 6706130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 6716130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 6726130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 6736130f66eaae89f8878590796977678afa8448926Evan Cheng if (!isDead || MO.isDead()) 6746130f66eaae89f8878590796977678afa8448926Evan Cheng return i; 675576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 6766130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 677576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 67819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 679f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 680f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 681f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 682f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 683749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 684749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 68519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 686749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 687f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 68819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 68919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 690f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 69119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 692576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 693d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// isRegTiedToUseOperand - Given the index of a register def operand, 694d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// check if the register def is tied to a source operand, due to either 695d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// two-address elimination or inline assembly constraints. Returns the 696d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// first tied use operand index by reference is UseOpIdx is not null. 697d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilsonbool MachineInstr::isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx){ 698fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 699d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(DefOpIdx >= 2); 700d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson const MachineOperand &MO = getOperand(DefOpIdx); 701fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!MO.isReg() || !MO.isDef()) 702fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 703fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Determine the actual operand no corresponding to this index. 704fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo = 0; 705fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 1, e = getNumOperands(); i < e; ) { 706fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 707fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 708fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 709fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng i += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 710d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (i > DefOpIdx) 711fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng break; 712fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng ++DefNo; 713fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 714fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 715fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 716fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!FMO.isImm()) 717fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 718fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse()) 719fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 720fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned Idx; 721fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) && 722d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson Idx == DefNo) { 723d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 724d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i + 1; 725fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 726d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 727fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 728fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 729fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 730d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!"); 731749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 732ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 733ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 7342ce7f2068f13566f5a70ee779e3bb83a6cb8d942Dan Gohman if (MO.isReg() && MO.isUse() && 735d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefOpIdx) { 736d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 737d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i; 738ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 739d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 74032dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 74132dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 74232dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 74332dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 744a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// isRegTiedToDefOperand - Return true if the operand of the specified index 745a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// is a register use and it is tied to an def operand. It also returns the def 746a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// operand index by reference. 747a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Chengbool MachineInstr::isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx){ 748fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 749fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 7500c8382ce9a96e36325b17d242fd1af16564d8a85Chris Lattner if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) 751fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 752fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(UseOpIdx > 0); 753fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &UFMO = getOperand(UseOpIdx-1); 754fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!UFMO.isImm()) 755fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; // Must be physreg uses. 756fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo; 757fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) { 758fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!DefOpIdx) 759fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 760fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 761fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefIdx = 1; 762fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Remember to adjust the index. First operand is asm string, then there 763fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // is a flag for each. 764fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng while (DefNo) { 765fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(DefIdx); 766fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 767fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 768fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 769fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng --DefNo; 770fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 771fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng *DefOpIdx = DefIdx+1; 772fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 773fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 774fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 775fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 776fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 777a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const TargetInstrDesc &TID = getDesc(); 778a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (UseOpIdx >= TID.getNumOperands()) 779a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 780a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 781a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (!MO.isReg() || !MO.isUse()) 782a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 783a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng int DefIdx = TID.getOperandConstraint(UseOpIdx, TOI::TIED_TO); 784a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefIdx == -1) 785a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 786a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefOpIdx) 787a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng *DefOpIdx = (unsigned)DefIdx; 788a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return true; 789a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng} 790a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 791576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 792576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 793576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 794576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 795576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 796d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || (!MO.isKill() && !MO.isDead())) 797576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 798576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 799576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 800576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 801576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 802576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 803576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 804576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 805576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 806576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 807576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 808576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 809576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 810576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 81119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 81219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 813749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 814b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 815b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 816b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 817b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 818b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 819b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 82019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 82119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 82219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 82319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 8249f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 8259f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 8269f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 827b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, 828b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohman bool &SawStore) const { 829b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 830b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 831b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 832b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 833b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 834237dee125997dcaf16e391878465162cc680c0faDan Gohman if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) 835b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 836b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 837b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 838b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 839b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 840b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 841b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 8423e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (TID->mayLoad() && !TII->isInvariantLoad(this)) 843b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 8443e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // end of block, or if the laod is volatile, we can't move it. 845d790a5ceee7138d8a5352432ccf862a42e3f5819Dan Gohman return !SawStore && !hasVolatileMemoryRef(); 8463e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 847b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 848b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 849b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 850df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 851df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 852b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, 853b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohman unsigned DstReg) const { 854df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 8553689ff450ae2d72aadf48c70f499e4368684d1e3Evan Cheng if (!getDesc().isRematerializable() || 8563689ff450ae2d72aadf48c70f499e4368684d1e3Evan Cheng !TII->isTriviallyReMaterializable(this) || 8573689ff450ae2d72aadf48c70f499e4368684d1e3Evan Cheng !isSafeToMove(TII, SawStore)) 858df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 859df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 860cbad42cfd1cc93a41ff26ea2e8895bfbc09f54f2Dan Gohman const MachineOperand &MO = getOperand(i); 861d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg()) 862df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 863df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 864df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 865df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 8668763c1c54413c9cd0b56e2860edb5856151a69fcEvan Cheng // MachineSink because the code is no longer in two-address form (at least 867df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 868df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 869df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 870df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 871df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 872df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 873df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 874df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 875df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 8763e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// hasVolatileMemoryRef - Return true if this instruction may have a 8773e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// volatile memory reference, or if the information describing the 8783e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// memory reference is not available. Return false if it is known to 8793e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// have no volatile memory references. 8803e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohmanbool MachineInstr::hasVolatileMemoryRef() const { 8813e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // An instruction known never to access memory won't have a volatile access. 8823e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (!TID->mayStore() && 8833e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->mayLoad() && 8843e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->isCall() && 8853e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->hasUnmodeledSideEffects()) 8863e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 8873e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 8883e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Otherwise, if the instruction has no memory reference information, 8893e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // conservatively assume it wasn't preserved. 8903e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (memoperands_empty()) 8913e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 8923e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 8933e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Check the memory reference information for volatile references. 8943e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman for (std::list<MachineMemOperand>::const_iterator I = memoperands_begin(), 8953e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman E = memoperands_end(); I != E; ++I) 8963e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (I->isVolatile()) 8973e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 8983e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 8993e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 9003e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman} 9013e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 90221326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 903e81561909d128c6e2d8033cb5465a49b2596b26aBill Wendling cerr << " " << *this; 90470bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 90570bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 906b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattnervoid MachineInstr::print(std::ostream &OS, const TargetMachine *TM) const { 9075ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang raw_os_ostream RawOS(OS); 9085ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang print(RawOS, TM); 9095ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 9105ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 9115ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { 912e3087890ac7f2fcf4697f8e09091e9a384311b9cChris Lattner // Specialize printing if op#0 is definition 9136a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner unsigned StartOp = 0; 914d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (getNumOperands() && getOperand(0).isReg() && getOperand(0).isDef()) { 915f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOperand(0).print(OS, TM); 9166a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " = "; 9176a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner ++StartOp; // Don't print this operand again! 9186a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 919b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 920749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 921edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 9226a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 9236a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner if (i != StartOp) 9246a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << ","; 9256a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 926f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOperand(i).print(OS, TM); 9271049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 928edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 9298e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 9302bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << ", Mem:"; 931fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman for (std::list<MachineMemOperand>::const_iterator i = memoperands_begin(), 9328e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman e = memoperands_end(); i != e; ++i) { 9338e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman const MachineMemOperand &MRO = *i; 93469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman const Value *V = MRO.getValue(); 93569de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 93669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman assert((MRO.isLoad() || MRO.isStore()) && 93769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman "SV has to be a load, store or both."); 93869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 93969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isVolatile()) 94069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman OS << "Volatile "; 9412bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman 94269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isLoad()) 9432bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "LD"; 94469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman if (MRO.isStore()) 9452bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "ST"; 94669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 947bbd8322daaefa70ba1a282956df5f977e783524bEvan Cheng OS << "(" << MRO.getSize() << "," << MRO.getAlignment() << ") ["; 94869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 9492bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman if (!V) 9502bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << "<unknown>"; 9512bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman else if (!V->getName().empty()) 9522bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << V->getName(); 953edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner else if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) { 9545ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang PSV->print(OS); 955edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner } else 9562bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << V; 9572bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman 9582bfe6ff605f07e8f50874b1326227efc8bb8ed3dDan Gohman OS << " + " << MRO.getOffset() << "]"; 95969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 96069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 96169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 962b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling if (!debugLoc.isUnknown()) { 963b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling const MachineFunction *MF = getParent()->getParent(); 964b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling DebugLocTuple DLT = MF->getDebugLocTuple(debugLoc); 965b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling OS << " [dbg: " 966b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling << DLT.Src << "," 967b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling << DLT.Line << "," 968b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling << DLT.Col << "]"; 969b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling } 970b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling 9711049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 9721049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 9731049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 974b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 9756f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 976b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 9779b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 9782ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 9793f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 9809b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 9814a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 9824a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 983d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 9849b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 9859b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 9869b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 9879b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 9884a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 9899b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 9903f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 9913f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isKill()) 9923f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked kill. 9933f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 9943f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsKill(); 9953f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 9963f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 9973f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isKill() && 9983f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 9999b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 10009b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 10012ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 10022ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 10039b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1004b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1005b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1006b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 10079b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 10089b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 10099b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 10109b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 10119b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 10129b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 10139b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 10149b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 10159b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 10169b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 10174a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 1018b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 10193f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 10204a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 10214a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 10224a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 10234a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 1024b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1025b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 10263f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1027b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1028b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 1029b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 10306f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1031b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 10329b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 103301b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 10343f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 10359b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 1036b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1037b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 1038d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 10399b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 10409b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 10413f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Reg) 10423f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman continue; 10433f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman 10449b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 10453f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 10463f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isDead()) 10473f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked dead. 10483f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 10493f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsDead(); 10503f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 10513f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 10523f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isDead() && 10533f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 10549b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 10559b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 10562ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 105722ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 105822ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 105922ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 10609b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1061b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1062b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1063b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 10649b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 10659b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 10669b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 10679b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 10689b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 10699b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 10709b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 10719b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 10729b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 10739b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 10743f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // If not found, this means an alias of one of the operands is dead. Add a 10753f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // new implicit operand if required. 10763f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 10773f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman addOperand(MachineOperand::CreateReg(IncomingReg, 10783f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman true /*IsDef*/, 10793f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman true /*IsImp*/, 10803f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman false /*IsKill*/, 10813f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman true /*IsDead*/)); 1082b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1083b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 10843f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1085b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1086