MachineInstr.cpp revision 80f6c5898113806130975fd56d24929b06bf54f8
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" 168c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman#include "llvm/Function.h" 17fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng#include "llvm/InlineAsm.h" 1884bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/Value.h" 19cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman#include "llvm/Assembly/Writer.h" 208517e1f0beea9b5e47974f083396d53294c390adChris Lattner#include "llvm/CodeGen/MachineFunction.h" 21c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman#include "llvm/CodeGen/MachineMemOperand.h" 2262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner#include "llvm/CodeGen/MachineRegisterInfo.h" 2369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 241049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner#include "llvm/Target/TargetMachine.h" 25bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng#include "llvm/Target/TargetInstrInfo.h" 26f14cf85e334ff03bbdd23e473f14ffa4fb025e94Chris Lattner#include "llvm/Target/TargetInstrDesc.h" 276f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman#include "llvm/Target/TargetRegisterInfo.h" 28e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman#include "llvm/Analysis/AliasAnalysis.h" 29a26eae64ddf607549f9e47046d46ea5b9ec648b4Argyrios Kyrtzidis#include "llvm/Analysis/DebugInfo.h" 30c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin#include "llvm/Support/ErrorHandling.h" 312c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman#include "llvm/Support/LeakDetector.h" 32ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman#include "llvm/Support/MathExtras.h" 33edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner#include "llvm/Support/raw_ostream.h" 34b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman#include "llvm/ADT/FoldingSet.h" 350742b59913a7760eb26f08121cd244a37e83e3b3Chris Lattnerusing namespace llvm; 36d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 37f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 38f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineOperand Implementation 39f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 40f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 4162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandToRegInfo - Add this register operand to the specified 4262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// MachineRegisterInfo. If it is null, then the next/prev fields should be 4362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// explicitly nulled out. 4462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo) { 45d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(isReg() && "Can only add reg operand to use lists"); 4662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 4762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the reginfo pointer is null, just explicitly null out or next/prev 4862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // pointers, to ensure they are not garbage. 4962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 5062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Prev = 0; 5162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next = 0; 5262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 5362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 5462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, add this operand to the head of the registers use/def list. 5680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner MachineOperand **Head = &RegInfo->getRegUseDefListHead(getReg()); 5762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5880fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // For SSA values, we prefer to keep the definition at the start of the list. 5980fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // we do this by skipping over the definition if it is at the head of the 6080fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // list. 6180fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner if (*Head && (*Head)->isDef()) 6280fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Head = &(*Head)->Contents.Reg.Next; 6380fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner 6480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Next = *Head; 6562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Contents.Reg.Next) { 6662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(getReg() == Contents.Reg.Next->getReg() && 6762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Different regs on the same list!"); 6862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next->Contents.Reg.Prev = &Contents.Reg.Next; 6962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 7062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7180fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Prev = Head; 7280fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner *Head = this; 7362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 7462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 753bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// RemoveRegOperandFromRegInfo - Remove this register operand from the 763bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// MachineRegisterInfo it is linked with. 773bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohmanvoid MachineOperand::RemoveRegOperandFromRegInfo() { 783bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(isOnRegUseList() && "Reg operand is not on a use list"); 793bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman // Unlink this from the doubly linked list of operands. 803bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman MachineOperand *NextOp = Contents.Reg.Next; 813bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman *Contents.Reg.Prev = NextOp; 823bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman if (NextOp) { 833bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(NextOp->getReg() == getReg() && "Corrupt reg use/def chain!"); 843bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman NextOp->Contents.Reg.Prev = Contents.Reg.Prev; 853bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman } 863bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Prev = 0; 873bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Next = 0; 883bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman} 893bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman 9062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::setReg(unsigned Reg) { 9162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (getReg() == Reg) return; // No change. 9262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 9362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to change the register. If this operand is embedded 9462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // into a machine function, we need to update the old and new register's 9562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // use/def lists. 9662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 9762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 9862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) { 9962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 10062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 10162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 10262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 10362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 10462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, just change the register, no problem. :) 10662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 10762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 10862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToImmediate - Replace this operand with a new immediate operand of 11062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an immediate already, 11162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setImm method should be used. 11262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToImmediate(int64_t ImmVal) { 11362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is currently a register operand, and if this is in a 11462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // function, deregister the operand from the register's use/def list. 115d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg() && getParent() && getParent()->getParent() && 11662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner getParent()->getParent()->getParent()) 11762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 11862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 11962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Immediate; 12062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.ImmVal = ImmVal; 12162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 12262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 12362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToRegister - Replace this operand with a new register operand of 12462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an register already, 12562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setReg method should be used. 12662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp, 1274784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng bool isKill, bool isDead, bool isUndef) { 12862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is already a register operand, use setReg to update the 12962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def lists. 130d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg()) { 131e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen assert(!isEarlyClobber()); 13262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner setReg(Reg); 13362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 13462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, change this to a register and set the reg#. 13562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Register; 13662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 13762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 13862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is embedded in a function, add the operand to the 13962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def list. 14062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 14162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 14262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) 14362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 14462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 14562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 14662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDef = isDef; 14762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsImp = isImp; 14862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsKill = isKill; 14962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDead = isDead; 1504784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng IsUndef = isUndef; 151e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen IsEarlyClobber = false; 15262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner SubReg = 0; 15362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 15462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 155f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// isIdenticalTo - Return true if this operand is identical to the specified 156f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// operand. 157f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnerbool MachineOperand::isIdenticalTo(const MachineOperand &Other) const { 15831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (getType() != Other.getType() || 15931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner getTargetFlags() != Other.getTargetFlags()) 16031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return false; 161f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 162f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 163c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unrecognized operand type"); 164f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 165f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getReg() == Other.getReg() && isDef() == Other.isDef() && 166f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getSubReg() == Other.getSubReg(); 167f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 168f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getImm() == Other.getImm(); 169e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 170e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman return getFPImm() == Other.getFPImm(); 171f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 172f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getMBB() == Other.getMBB(); 173f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 1748aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 175f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 1768aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex() && getOffset() == Other.getOffset(); 177f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 1788aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 179f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 180f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset(); 181f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 182f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return !strcmp(getSymbolName(), Other.getSymbolName()) && 183f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOffset() == Other.getOffset(); 1848c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 1858c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman return getBlockAddress() == Other.getBlockAddress(); 186f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 187f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 188f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 189f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// print - Print the specified machine operand. 190f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// 1915ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const { 19280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // If the instruction is embedded into a basic block, we can find the 19380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // target info for the instruction. 19480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM) 19580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineInstr *MI = getParent()) 19680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = MI->getParent()) 19780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineFunction *MF = MBB->getParent()) 19880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 19980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 200f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 201f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 2026f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman if (getReg() == 0 || TargetRegisterInfo::isVirtualRegister(getReg())) { 203f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%reg" << getReg(); 204f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else { 205f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM) 206e6d088acc90e422451e098555d383d4d65b6ce6bBill Wendling OS << "%" << TM->getRegisterInfo()->get(getReg()).Name; 207f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner else 2080ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "%physreg" << getReg(); 209f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 2102ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2114784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (getSubReg() != 0) 21231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << ':' << getSubReg(); 2132ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2144784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isDef() || isKill() || isDead() || isImplicit() || isUndef() || 2154784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng isEarlyClobber()) { 21631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '<'; 217f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner bool NeedComma = false; 2180789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isDef()) { 21931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 220913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen if (isEarlyClobber()) 221913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen OS << "earlyclobber,"; 2220789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isImplicit()) 2230789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-"; 224f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "def"; 225f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 2265affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } else if (isImplicit()) { 2270789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-use"; 2285affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng NeedComma = true; 2295affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } 2300789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng 2314784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead() || isUndef()) { 23231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 233181eb737b28628adc4376b973610a02039385026Bill Wendling if (isKill()) OS << "kill"; 234181eb737b28628adc4376b973610a02039385026Bill Wendling if (isDead()) OS << "dead"; 2354784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isUndef()) { 2364784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead()) 2374784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << ','; 2384784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << "undef"; 2394784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng } 240f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 24131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 242f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 243f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 244f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 245f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << getImm(); 246f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 247e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 248cf0fe8d813727383d630055bb9d1cde21b00b7e7Chris Lattner if (getFPImm()->getType()->isFloatTy()) 249e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToFloat(); 25031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner else 251e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToDouble(); 252e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman break; 253f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 2540ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "<BB#" << getMBB()->getNumber() << ">"; 255f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 256f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 25731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<fi#" << getIndex() << '>'; 258f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 259f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2608aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<cp#" << getIndex(); 261f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 26231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 263f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 264f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 26531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<jt#" << getIndex() << '>'; 266f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 267f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 2688d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman OS << "<ga:"; 2698d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman WriteAsOperand(OS, getGlobal(), /*PrintType=*/false); 270f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 27131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 272f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 273f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 274f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<es:" << getSymbolName(); 275f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 27631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 277f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 2788c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 2790ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "<"; 2800ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman WriteAsOperand(OS, getBlockAddress(), /*PrintType=*/false); 2818c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman OS << '>'; 2828c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman break; 283f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: 284c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unrecognized operand type"); 285f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 28631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 28731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (unsigned TF = getTargetFlags()) 28831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "[TF=" << TF << ']'; 289f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 290f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 291f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 292ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman// MachineMemOperand Implementation 293ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 294ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 295ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan GohmanMachineMemOperand::MachineMemOperand(const Value *v, unsigned int f, 296ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman int64_t o, uint64_t s, unsigned int a) 297ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman : Offset(o), Size(s), V(v), 298ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman Flags((f & 7) | ((Log2_32(a) + 1) << 3)) { 29928f02fdd76f4efc05d14649e0eec90ce8e71e17eDan Gohman assert(getBaseAlignment() == a && "Alignment is not a power of 2!"); 300c5e1f98fdf44993c2bfe4c1ef633b2358cd718c1Dan Gohman assert((isLoad() || isStore()) && "Not a load/store!"); 301ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman} 302ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 303b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// Profile - Gather unique data for the object. 304b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// 305b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohmanvoid MachineMemOperand::Profile(FoldingSetNodeID &ID) const { 306b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Offset); 307b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Size); 308b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddPointer(V); 309b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Flags); 310b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman} 311b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman 312c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanvoid MachineMemOperand::refineAlignment(const MachineMemOperand *MMO) { 313c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // The Value and Offset may differ due to CSE. But the flags and size 314c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // should be the same. 315c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getFlags() == getFlags() && "Flags mismatch!"); 316c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getSize() == getSize() && "Size mismatch!"); 317c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 318c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO->getBaseAlignment() >= getBaseAlignment()) { 319c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Update the alignment value. 320c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Flags = (Flags & 7) | ((Log2_32(MMO->getBaseAlignment()) + 1) << 3); 321c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Also update the base and offset, because the new alignment may 322c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // not be applicable with the old ones. 323c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman V = MMO->getValue(); 324c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Offset = MMO->getOffset(); 325c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 326c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 327c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 3284b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// getAlignment - Return the minimum known alignment in bytes of the 3294b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// actual memory reference. 3304b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohmanuint64_t MachineMemOperand::getAlignment() const { 3314b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman return MinAlign(getBaseAlignment(), getOffset()); 3324b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman} 3334b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman 334c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanraw_ostream &llvm::operator<<(raw_ostream &OS, const MachineMemOperand &MMO) { 335c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert((MMO.isLoad() || MMO.isStore()) && 336cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman "SV has to be a load, store or both."); 337cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 338c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isVolatile()) 339cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "Volatile "; 340cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 341c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isLoad()) 342cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "LD"; 343c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isStore()) 344cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "ST"; 345c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << MMO.getSize(); 346cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 347cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the address information. 348cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "["; 349c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (!MMO.getValue()) 350cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "<unknown>"; 351cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman else 352c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman WriteAsOperand(OS, MMO.getValue(), /*PrintType=*/false); 353cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 354cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // If the alignment of the memory reference itself differs from the alignment 355cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // of the base pointer, print the base alignment explicitly, next to the base 356cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // pointer. 357c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment()) 358c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getBaseAlignment() << ")"; 359cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 360c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getOffset() != 0) 361c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "+" << MMO.getOffset(); 362cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "]"; 363cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 364cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the alignment of the reference. 365c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment() || 366c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MMO.getBaseAlignment() != MMO.getSize()) 367c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getAlignment() << ")"; 368cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 369cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman return OS; 370cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman} 371cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 372ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 373f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineInstr Implementation 374f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 375f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 376c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// MachineInstr ctor - This constructor creates a dummy MachineInstr with 37767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng/// TID NULL and no operands. 378c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr() 379c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(0), NumImplicitOps(0), MemRefs(0), MemRefsEnd(0), 380c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(DebugLoc::getUnknownLoc()) { 3812c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3822c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 3837279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner} 3847279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner 38567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Chengvoid MachineInstr::addImplicitDefUseOperands() { 38667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 387a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpDefs = TID->ImplicitDefs; *ImpDefs; ++ImpDefs) 3888019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpDefs, true, true)); 38967f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 390a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpUses = TID->ImplicitUses; *ImpUses; ++ImpUses) 3918019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpUses, false, true)); 392d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 393d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 394d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng/// MachineInstr ctor - This constructor create a MachineInstr and add the 395c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// implicit operands. It reserves space for number of operands specified by 396749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner/// TargetInstrDesc or the numOperands if it is not zero. (for 397c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// instructions with variable number of operands). 398749c6f6b5ed301c84aac562e414486549d7b98ebChris LattnerMachineInstr::MachineInstr(const TargetInstrDesc &tid, bool NoImp) 399c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(&tid), NumImplicitOps(0), MemRefs(0), MemRefsEnd(0), Parent(0), 40006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 401349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitDefs()) 402349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 403d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 404349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitUses()) 405349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 406d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 407349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 408fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 409fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 4102c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4112c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 412d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 413d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 41406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 41506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(const TargetInstrDesc &tid, const DebugLoc dl, 41606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp) 417c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(&tid), NumImplicitOps(0), MemRefs(0), MemRefsEnd(0), 418c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 41906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitDefs()) 42006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 42106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 42206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitUses()) 42306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 42406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 42506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 42606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp) 42706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 42806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 42906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 43006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 43106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 43206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - Work exactly the same as the ctor two above, except 43306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// that the MachineInstr is created and added to the end of the specified 43406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// basic block. 43506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// 43606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const TargetInstrDesc &tid) 437c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(&tid), NumImplicitOps(0), MemRefs(0), MemRefsEnd(0), Parent(0), 43806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 43906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen assert(MBB && "Cannot use inserting ctor with null basic block!"); 44006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitDefs) 44106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 44206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 44306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitUses) 44406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 44506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 44606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 44706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 44806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 44906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 45006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen MBB->push_back(this); // Add instruction to end of basic block! 45106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 45206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 45306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 454ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 45506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 456749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 457c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(&tid), NumImplicitOps(0), MemRefs(0), MemRefsEnd(0), 458c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 459ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 46067f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 461349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 462d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 46367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 464349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 465d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 466349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 46767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 4682c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4692c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 470ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 471ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 472ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 473ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 474ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 4751ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 476c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman : TID(&MI.getDesc()), NumImplicitOps(0), 477c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs(MI.MemRefs), MemRefsEnd(MI.MemRefsEnd), 478c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(MI.getDebugLoc()) { 479943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 480b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 481ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 4821ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 4831ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 4841ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 4850c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 4868e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 487f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 4886116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 4896116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 490466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 491466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 492ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 4932c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 494e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 49562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 496e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 497d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 49862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 49962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 500e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 501aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 502aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 50362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 50462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 50562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 50662ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 50762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 5084e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 50962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 51062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 51162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 51262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 51362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 51462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 51562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 51662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 517d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 51862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 51962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 52062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 52162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 52362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 52462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 52562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 52662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 527d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 52862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 52962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 53062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 53162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 53462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 53562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 53662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 53762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 538d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman bool isImpReg = Op.isReg() && Op.isImplicit(); 53962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 54062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 54162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 542bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman MachineRegisterInfo *RegInfo = getRegInfo(); 543bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman 54462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 54562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 54662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 54762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 54862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 54962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 55062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 55162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 55362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 55462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 556d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Op.isReg()) 557bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman Operands.back().AddRegOperandToRegInfo(RegInfo); 55862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 55962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 56362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 56462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 56662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 56762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 56862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 56962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 57062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 57162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 57362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 574d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 57562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 57662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 57862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 57962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 58062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 58162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 58262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 58362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 58462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 58562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 58662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 587d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 58862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 58962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 59062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 59262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 59362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 59462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 595d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 59662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 59762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 59962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 600d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 60162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 60262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 60362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 60462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 60562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 60662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 60762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 60862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 60962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 61062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 61162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 61362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 61462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 61562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 61662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 61862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 61962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 62062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 62162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 62262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 62462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 62562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 626d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 62762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 62862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 63062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 63162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 63262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 63462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 63562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 63662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 63762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 63862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 639d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 64062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 64162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 64562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 64762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 648d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 64962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 65062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 65162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 65262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 65362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 654c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction. 655c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// This function should be used only occasionally. The setMemRefs function 656c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// is the primary method for setting up a MachineInstr's MemRefs list. 6578e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 658c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MO) { 659c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefs = MemRefs; 660c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefsEnd = MemRefsEnd; 6618e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 662c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman size_t NewNum = (MemRefsEnd - MemRefs) + 1; 663c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefs = MF.allocateMemRefsArray(NewNum); 664c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefsEnd = NewMemRefs + NewNum; 6658e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 666c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman std::copy(OldMemRefs, OldMemRefsEnd, NewMemRefs); 667c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman NewMemRefs[NewNum - 1] = MO; 668c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 669c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 670c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefsEnd = NewMemRefsEnd; 671c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 67262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67348d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 67448d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 67548d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 67648d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 67748d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 67848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 67948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 68048d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 68148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 6828e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 6838e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 6848e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 6858e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 6868e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 6878e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 6888e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 6898e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 69021326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 69121326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 6922a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 693349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 6948f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 6953497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 696413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 69770bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 69870bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 69919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 70019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 70119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 702349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 7038f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 70419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 70519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7069407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman for (unsigned i = NumOperands, e = getNumOperands(); i != e; ++i) { 7079407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman const MachineOperand &MO = getOperand(i); 708d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isImplicit()) 70919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 71019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 71119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 71219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 71319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7148ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 7154406604047423576e36657c7ede266ca42e79642Dan Gohman/// isLabel - Returns true if the MachineInstr represents a label. 7164406604047423576e36657c7ede266ca42e79642Dan Gohman/// 7174406604047423576e36657c7ede266ca42e79642Dan Gohmanbool MachineInstr::isLabel() const { 7184406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL || 7194406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::EH_LABEL || 7204406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::GC_LABEL; 7214406604047423576e36657c7ede266ca42e79642Dan Gohman} 7224406604047423576e36657c7ede266ca42e79642Dan Gohman 723bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// isDebugLabel - Returns true if the MachineInstr represents a debug label. 724bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// 725bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Chengbool MachineInstr::isDebugLabel() const { 7264406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL; 727bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng} 728bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng 729faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 730f9ca50e3dce88b2f9e2f2f0cac2d3ed78afda841Jim Grosbach/// the specific register or -1 if it is not found. It further tightens 73176d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 7326130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 7336130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 734576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 735f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 736d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 7376130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7386130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7396130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 7406130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7416130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7426130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7436130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7446130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7456130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 74676d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 74732eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 748b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 74932eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 750b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 751b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 7526130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 753703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 754703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 755703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 7566130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, 7576130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 758b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 7596130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 760d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 7616130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7626130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7636130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7646130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7656130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7666130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7676130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 7686130f66eaae89f8878590796977678afa8448926Evan Cheng if (!isDead || MO.isDead()) 7696130f66eaae89f8878590796977678afa8448926Evan Cheng return i; 770576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 7716130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 772576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 77319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 774f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 775f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 776f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 777f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 778749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 779749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 78019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 781749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 782f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 78319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 78419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 785f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 78619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 787576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 788d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// isRegTiedToUseOperand - Given the index of a register def operand, 789d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// check if the register def is tied to a source operand, due to either 790d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// two-address elimination or inline assembly constraints. Returns the 791d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// first tied use operand index by reference is UseOpIdx is not null. 792ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 793ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx) const { 794fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 795d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(DefOpIdx >= 2); 796d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson const MachineOperand &MO = getOperand(DefOpIdx); 797c30aa7b3de0ce8c37e9630e8e7a73cb83c808c62Chris Lattner if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0) 798fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 799ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng // Determine the actual operand index that corresponds to this index. 800fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo = 0; 801ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned DefPart = 0; 802fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 1, e = getNumOperands(); i < e; ) { 803fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 80445d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 80545d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!FMO.isImm()) 80645d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 807fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 808ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm()); 809ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned PrevDef = i + 1; 810ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng i = PrevDef + NumOps; 811ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (i > DefOpIdx) { 812ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng DefPart = DefOpIdx - PrevDef; 813fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng break; 814ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 815fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng ++DefNo; 816fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 817ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { 818fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 819fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!FMO.isImm()) 820fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 821fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse()) 822fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 823fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned Idx; 824ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) && 825d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson Idx == DefNo) { 826d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 827ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *UseOpIdx = (unsigned)i + 1 + DefPart; 828fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 829d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 830fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 831ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 832fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 833fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 834d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!"); 835749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 836ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 837ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 8382ce7f2068f13566f5a70ee779e3bb83a6cb8d942Dan Gohman if (MO.isReg() && MO.isUse() && 839d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefOpIdx) { 840d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 841d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i; 842ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 843d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 84432dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 84532dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 84632dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 84732dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 848a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// isRegTiedToDefOperand - Return true if the operand of the specified index 849a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// is a register use and it is tied to an def operand. It also returns the def 850a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// operand index by reference. 851ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 852ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx) const { 853fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 854fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 8550c8382ce9a96e36325b17d242fd1af16564d8a85Chris Lattner if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) 856fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 85757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen 85857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen // Find the flag operand corresponding to UseOpIdx 85957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen unsigned FlagIdx, NumOps=0; 86057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) { 86157e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 86245d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 86345d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!UFMO.isImm()) 86445d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 86557e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm()); 86657e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen assert(NumOps < getNumOperands() && "Invalid inline asm flag"); 86757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (UseOpIdx < FlagIdx+NumOps+1) 86857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen break; 869ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 87057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (FlagIdx >= UseOpIdx) 871ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 87257e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 873fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo; 874fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) { 875fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!DefOpIdx) 876fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 877fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 878fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefIdx = 1; 879fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Remember to adjust the index. First operand is asm string, then there 880fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // is a flag for each. 881fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng while (DefNo) { 882fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(DefIdx); 883fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 884fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 885fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 886fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng --DefNo; 887fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 888ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *DefOpIdx = DefIdx + UseOpIdx - FlagIdx; 889fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 890fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 891fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 892fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 893fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 894a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const TargetInstrDesc &TID = getDesc(); 895a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (UseOpIdx >= TID.getNumOperands()) 896a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 897a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 898a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (!MO.isReg() || !MO.isUse()) 899a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 900a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng int DefIdx = TID.getOperandConstraint(UseOpIdx, TOI::TIED_TO); 901a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefIdx == -1) 902a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 903a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefOpIdx) 904a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng *DefOpIdx = (unsigned)DefIdx; 905a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return true; 906a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng} 907a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 908576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 909576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 910576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 911576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 912576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 913d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || (!MO.isKill() && !MO.isDead())) 914576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 915576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 916576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 917576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 918576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 919576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 920576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 921576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 922576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 923576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 924576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 925576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 926576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 927576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 92819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 92919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 930749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 931b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 932b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 933b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 934b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 935b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 936b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 93719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 93819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 93919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 94019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 9419f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 9429f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 9439f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 944b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, 945a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool &SawStore, 946a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 947b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 948b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 949b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 950b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 951b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 952237dee125997dcaf16e391878465162cc680c0faDan Gohman if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) 953b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 954b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 955b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 956b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 957b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 958b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 959b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 960a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (TID->mayLoad() && !isInvariantLoad(AA)) 961b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 9627cc2c406d0c82bcf329048ced643ec77fcae60e6Evan Cheng // end of block, or if the load is volatile, we can't move it. 963d790a5ceee7138d8a5352432ccf862a42e3f5819Dan Gohman return !SawStore && !hasVolatileMemoryRef(); 9643e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 965b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 966b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 967b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 968df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 969df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 970b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, 971a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman unsigned DstReg, 972a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 973df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 974a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (!TII->isTriviallyReMaterializable(this, AA) || 975a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman !isSafeToMove(TII, SawStore, AA)) 976df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 977df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 978cbad42cfd1cc93a41ff26ea2e8895bfbc09f54f2Dan Gohman const MachineOperand &MO = getOperand(i); 979d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg()) 980df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 981df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 982df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 983df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 9848763c1c54413c9cd0b56e2860edb5856151a69fcEvan Cheng // MachineSink because the code is no longer in two-address form (at least 985df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 986df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 987df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 988df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 989df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 990df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 991df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 992df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 993df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 9943e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// hasVolatileMemoryRef - Return true if this instruction may have a 9953e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// volatile memory reference, or if the information describing the 9963e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// memory reference is not available. Return false if it is known to 9973e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// have no volatile memory references. 9983e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohmanbool MachineInstr::hasVolatileMemoryRef() const { 9993e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // An instruction known never to access memory won't have a volatile access. 10003e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (!TID->mayStore() && 10013e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->mayLoad() && 10023e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->isCall() && 10033e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->hasUnmodeledSideEffects()) 10043e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10053e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10063e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Otherwise, if the instruction has no memory reference information, 10073e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // conservatively assume it wasn't preserved. 10083e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (memoperands_empty()) 10093e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10103e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10113e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Check the memory reference information for volatile references. 1012c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator I = memoperands_begin(), E = memoperands_end(); I != E; ++I) 1013c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if ((*I)->isVolatile()) 10143e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10153e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10163e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10173e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman} 10183e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1019e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// isInvariantLoad - Return true if this instruction is loading from a 1020e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// location whose value is invariant across the function. For example, 1021e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// loading a value from the constant pool or from from the argument area 1022e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// of a function if it does not change. This should only return true of 1023e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// *all* loads the instruction does are invariant (if it does multiple loads). 1024e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanbool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { 1025e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction doesn't load at all, it isn't an invariant load. 1026e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (!TID->mayLoad()) 1027e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1028e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1029e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction has lost its memoperands, conservatively assume that 1030e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // it may not be an invariant load. 1031e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (memoperands_empty()) 1032e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1033e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1034e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman const MachineFrameInfo *MFI = getParent()->getParent()->getFrameInfo(); 1035e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1036e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman for (mmo_iterator I = memoperands_begin(), 1037e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman E = memoperands_end(); I != E; ++I) { 1038e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isVolatile()) return false; 1039e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isStore()) return false; 1040e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1041e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const Value *V = (*I)->getValue()) { 1042e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // A load from a constant PseudoSourceValue is invariant. 1043e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) 1044e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (PSV->isConstant(MFI)) 1045e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1046e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If we have an AliasAnalysis, ask it whether the memory is constant. 1047e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (AA && AA->pointsToConstantMemory(V)) 1048e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1049e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1050e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1051e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Otherwise assume conservatively. 1052e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1053e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1054e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1055e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Everything checks out. 1056e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return true; 1057e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman} 1058e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 105921326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 1060705e07f578e2b3af47ddab610feb4e7f2d3063a5Chris Lattner errs() << " " << *this; 10615ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 10625ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 10635ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { 106480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // We can be a bit tidier if we know the TargetMachine and/or MachineFunction. 106580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineFunction *MF = 0; 106680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = getParent()) { 106780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MF = MBB->getParent(); 106880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM && MF) 106980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 107080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 10710ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 10720ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print explicitly defined operands on the left of an assignment syntax. 107380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned StartOp = 0, e = getNumOperands(); 10740ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman for (; StartOp < e && getOperand(StartOp).isReg() && 10750ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).isDef() && 10760ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman !getOperand(StartOp).isImplicit(); 10770ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman ++StartOp) { 10780ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) OS << ", "; 10790ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).print(OS, TM); 10806a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 1081b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 10820ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) 10830ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " = "; 10840ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 10850ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the opcode name. 1086749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 1087edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 10880ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the rest of the operands. 108980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool OmittedAnyCallClobbers = false; 109080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool FirstOp = true; 10916a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 109280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineOperand &MO = getOperand(i); 109380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 109480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Omit call-clobbered registers which aren't used anywhere. This makes 109580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // call instructions much less noisy on targets where calls clobber lots 109680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // of registers. Don't rely on MO.isDead() because we may be called before 109780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // LiveVariables is run, or we may be looking at a non-allocatable reg. 109880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MF && getDesc().isCall() && 109980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.isReg() && MO.isImplicit() && MO.isDef()) { 110080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned Reg = MO.getReg(); 110180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) { 110280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineRegisterInfo &MRI = MF->getRegInfo(); 110380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MRI.use_empty(Reg) && !MRI.isLiveOut(Reg)) { 110480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool HasAliasLive = false; 110580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman for (const unsigned *Alias = TM->getRegisterInfo()->getAliasSet(Reg); 110680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned AliasReg = *Alias; ++Alias) 110780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!MRI.use_empty(AliasReg) || MRI.isLiveOut(AliasReg)) { 110880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman HasAliasLive = true; 110980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman break; 111080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 111180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!HasAliasLive) { 111280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OmittedAnyCallClobbers = true; 111380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman continue; 111480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 111580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 111680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 111780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 111880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 111980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 11206a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 112180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.print(OS, TM); 112280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 112380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 112480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Briefly indicate whether any call clobbers were omitted. 112580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (OmittedAnyCallClobbers) { 112680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 112780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OS << " ..."; 11281049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 1129edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 11300ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman bool HaveSemi = false; 11318e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 11320ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 11330ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11340ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " mem:"; 1135c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator i = memoperands_begin(), e = memoperands_end(); 1136c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman i != e; ++i) { 1137c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << **i; 1138cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman if (next(i) != e) 1139cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << " "; 114069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 114169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 114269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 114380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!debugLoc.isUnknown() && MF) { 11440ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 11450ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11460ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // TODO: print InlinedAtLoc information 11470ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 1148b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling DebugLocTuple DLT = MF->getDebugLocTuple(debugLoc); 11491619dc3b9ee2573c481591764c2d26d5ff16b483Devang Patel DICompileUnit CU(DLT.Scope); 11501619dc3b9ee2573c481591764c2d26d5ff16b483Devang Patel if (!CU.isNull()) 11510ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " dbg:" << CU.getDirectory() << '/' << CU.getFilename() << ":" 11520ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman << DLT.Line << ":" << DLT.Col; 1153b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling } 1154b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling 11551049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 11561049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 11571049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 1158b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 11596f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1160b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 11619b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 11622ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 11633f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 11649b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 11654a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 11664a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 1167efb8e3e113cbf359d6a838c3b37fedc8305d19bbJakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || MO.isUndef()) 11689b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 11699b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 11709b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 11719b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 11724a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 11739b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 11743f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 11753f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isKill()) 11763f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked kill. 11773f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 1178ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen if (isPhysReg && isRegTiedToDefOperand(i)) 1179ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen // Two-address uses of physregs must not be marked kill. 1180ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen return true; 11813f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsKill(); 11823f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 11833f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 11843f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isKill() && 11853f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 11869b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 11879b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 11882ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 11892ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 11909b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1191b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1192b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1193b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 11949b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 11959b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 11969b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 11979b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 11989b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 11999b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 12009b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 12019b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 12029b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 12039b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 12044a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 1205b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 12063f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 12074a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 12084a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 12094a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 12104a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 1211b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1212b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 12133f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1214b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1215b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 1216b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 12176f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1218b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 12199b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 122001b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 12213f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 12229b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 1223b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1224b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 1225d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 12269b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 12279b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 12283f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Reg) 12293f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman continue; 12303f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman 12319b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 12323f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 12333f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isDead()) 12343f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked dead. 12353f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 12363f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsDead(); 12373f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 12383f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 12393f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isDead() && 12403f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 12419b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 12429b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 12432ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 124422ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 124522ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 124622ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 12479b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1248b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1249b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1250b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 12519b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 12529b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 12539b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 12549b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 12559b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 12569b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 12579b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 12589b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 12599b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 12609b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 12613f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // If not found, this means an alias of one of the operands is dead. Add a 12623f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // new implicit operand if required. 126331530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (Found || !AddIfNotFound) 126431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return Found; 126531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 126631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner addOperand(MachineOperand::CreateReg(IncomingReg, 126731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDef*/, 126831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsImp*/, 126931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner false /*IsKill*/, 127031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDead*/)); 127131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return true; 1272b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1273