MachineInstr.cpp revision d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329
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() 379834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(0), NumImplicitOps(0), AsmPrinterFlags(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) 399834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 400834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman MemRefs(0), MemRefsEnd(0), Parent(0), 40106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 402349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitDefs()) 403349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 404d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 405349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitUses()) 406349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 407d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 408349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 409fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 410fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 4112c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4122c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 413d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 414d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 41506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 41606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(const TargetInstrDesc &tid, const DebugLoc dl, 41706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp) 418834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 419c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 42006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitDefs()) 42106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 42206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 42306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitUses()) 42406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 42506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 42606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 42706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp) 42806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 42906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 43006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 43106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 43206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 43306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - Work exactly the same as the ctor two above, except 43406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// that the MachineInstr is created and added to the end of the specified 43506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// basic block. 43606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// 43706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const TargetInstrDesc &tid) 438834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 439834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman MemRefs(0), MemRefsEnd(0), Parent(0), 44006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 44106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen assert(MBB && "Cannot use inserting ctor with null basic block!"); 44206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitDefs) 44306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 44406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 44506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitUses) 44606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 44706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 44806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 44906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 45006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 45106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 45206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen MBB->push_back(this); // Add instruction to end of basic block! 45306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 45406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 45506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 456ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 45706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 458749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 459834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 460c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 461ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 46267f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 463349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 464d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 46567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 466349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 467d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 468349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 46967f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 4702c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4712c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 472ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 473ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 474ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 475ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 476ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 4771ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 478834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&MI.getDesc()), NumImplicitOps(0), AsmPrinterFlags(0), 479c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs(MI.MemRefs), MemRefsEnd(MI.MemRefsEnd), 480c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(MI.getDebugLoc()) { 481943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 482b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 483ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 4841ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 4851ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 4861ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 4870c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 4888e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 489f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 4906116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 4916116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 492466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 493466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 494ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 4952c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 496e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 49762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 498e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 499d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 50062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 50162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 502e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 503aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 504aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 50562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 50662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 50762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 50862ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 50962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 5104e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 51162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 51262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 51362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 51462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 51562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 51662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 51762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 51862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 519d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 52062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 52162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 52362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 52562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 52662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 52762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 52862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 529d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 53062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 53162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 53262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 53362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 53662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 53762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 53862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 53962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 540d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman bool isImpReg = Op.isReg() && Op.isImplicit(); 54162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 54262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 54362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 544bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman MachineRegisterInfo *RegInfo = getRegInfo(); 545bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman 54662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 54762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 54862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 54962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 55062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 55162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 55262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 55362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 55562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 55662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 558d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Op.isReg()) 559bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman Operands.back().AddRegOperandToRegInfo(RegInfo); 56062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 56162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 56362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 56562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 56662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 56862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 56962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 57062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 57162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 57262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 57362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 57562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 576d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 57762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 57862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 58062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 58162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 58262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 58362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 58462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 58562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 58662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 58762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 58862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 589d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 59062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 59162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 59262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 59462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 59562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 59662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 597d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[OpNo].isReg()) 59862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 59962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 60062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 60162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 602d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 60362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 60462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 60562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 60662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 60762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 60862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 60962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 61062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 61262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 61362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 61562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 61662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 61762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 61862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 62062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 62162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 62262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 62362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 62462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 62662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 62762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 628d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 62962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 63062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 63262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 63362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 63462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 63662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 63762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 63862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 63962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 64062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 641d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 64262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 64362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 64762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 64962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 650d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 65162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 65262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 65362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 65462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 65562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 656c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction. 657c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// This function should be used only occasionally. The setMemRefs function 658c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// is the primary method for setting up a MachineInstr's MemRefs list. 6598e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 660c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MO) { 661c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefs = MemRefs; 662c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefsEnd = MemRefsEnd; 6638e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 664c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman size_t NewNum = (MemRefsEnd - MemRefs) + 1; 665c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefs = MF.allocateMemRefsArray(NewNum); 666c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefsEnd = NewMemRefs + NewNum; 6678e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 668c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman std::copy(OldMemRefs, OldMemRefsEnd, NewMemRefs); 669c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman NewMemRefs[NewNum - 1] = MO; 670c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 671c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 672c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefsEnd = NewMemRefsEnd; 673c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 67462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67548d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 67648d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 67748d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 67848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 67948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 68048d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 68148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 68248d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 68348d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 6848e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 6858e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 6868e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 6878e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 6888e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 6898e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 6908e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 6918e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 69221326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 69321326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 6942a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 695349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 6968f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 6973497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 698413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 69970bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 70070bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 70119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 70219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 70319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 704349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 7058f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 70619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 70719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7089407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman for (unsigned i = NumOperands, e = getNumOperands(); i != e; ++i) { 7099407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman const MachineOperand &MO = getOperand(i); 710d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isImplicit()) 71119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 71219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 71319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 71419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 71519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7168ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 7174406604047423576e36657c7ede266ca42e79642Dan Gohman/// isLabel - Returns true if the MachineInstr represents a label. 7184406604047423576e36657c7ede266ca42e79642Dan Gohman/// 7194406604047423576e36657c7ede266ca42e79642Dan Gohmanbool MachineInstr::isLabel() const { 7204406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL || 7214406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::EH_LABEL || 7224406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::GC_LABEL; 7234406604047423576e36657c7ede266ca42e79642Dan Gohman} 7244406604047423576e36657c7ede266ca42e79642Dan Gohman 725bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// isDebugLabel - Returns true if the MachineInstr represents a debug label. 726bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// 727bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Chengbool MachineInstr::isDebugLabel() const { 7284406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL; 729bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng} 730bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng 731faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 732f9ca50e3dce88b2f9e2f2f0cac2d3ed78afda841Jim Grosbach/// the specific register or -1 if it is not found. It further tightens 73376d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 7346130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 7356130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 736576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 737f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 738d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 7396130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7406130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7416130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 7426130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7436130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7446130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7456130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7466130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7476130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 74876d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 74932eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 750b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 75132eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 752b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 753b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 7546130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 755703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 756703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 757703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 7586130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, 7596130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 760b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 7616130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 762d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 7636130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7646130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7656130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7666130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7676130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7686130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7696130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 7706130f66eaae89f8878590796977678afa8448926Evan Cheng if (!isDead || MO.isDead()) 7716130f66eaae89f8878590796977678afa8448926Evan Cheng return i; 772576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 7736130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 774576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 77519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 776f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 777f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 778f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 779f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 780749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 781749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 78219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 783749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 784f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 78519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 78619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 787f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 78819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 789576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 790d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// isRegTiedToUseOperand - Given the index of a register def operand, 791d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// check if the register def is tied to a source operand, due to either 792d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// two-address elimination or inline assembly constraints. Returns the 793d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// first tied use operand index by reference is UseOpIdx is not null. 794ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 795ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx) const { 796fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 797d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(DefOpIdx >= 2); 798d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson const MachineOperand &MO = getOperand(DefOpIdx); 799c30aa7b3de0ce8c37e9630e8e7a73cb83c808c62Chris Lattner if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0) 800fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 801ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng // Determine the actual operand index that corresponds to this index. 802fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo = 0; 803ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned DefPart = 0; 804fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 1, e = getNumOperands(); i < e; ) { 805fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 80645d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 80745d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!FMO.isImm()) 80845d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 809fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 810ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm()); 811ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned PrevDef = i + 1; 812ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng i = PrevDef + NumOps; 813ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (i > DefOpIdx) { 814ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng DefPart = DefOpIdx - PrevDef; 815fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng break; 816ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 817fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng ++DefNo; 818fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 819ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { 820fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 821fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!FMO.isImm()) 822fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 823fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse()) 824fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 825fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned Idx; 826ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) && 827d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson Idx == DefNo) { 828d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 829ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *UseOpIdx = (unsigned)i + 1 + DefPart; 830fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 831d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 832fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 833ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 834fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 835fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 836d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!"); 837749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 838ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 839ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 8402ce7f2068f13566f5a70ee779e3bb83a6cb8d942Dan Gohman if (MO.isReg() && MO.isUse() && 841d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefOpIdx) { 842d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 843d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i; 844ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 845d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 84632dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 84732dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 84832dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 84932dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 850a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// isRegTiedToDefOperand - Return true if the operand of the specified index 851a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// is a register use and it is tied to an def operand. It also returns the def 852a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// operand index by reference. 853ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 854ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx) const { 855fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 856fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 8570c8382ce9a96e36325b17d242fd1af16564d8a85Chris Lattner if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) 858fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 85957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen 86057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen // Find the flag operand corresponding to UseOpIdx 86157e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen unsigned FlagIdx, NumOps=0; 86257e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) { 86357e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 86445d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 86545d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!UFMO.isImm()) 86645d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 86757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm()); 86857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen assert(NumOps < getNumOperands() && "Invalid inline asm flag"); 86957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (UseOpIdx < FlagIdx+NumOps+1) 87057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen break; 871ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 87257e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (FlagIdx >= UseOpIdx) 873ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 87457e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 875fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo; 876fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) { 877fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!DefOpIdx) 878fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 879fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 880fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefIdx = 1; 881fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Remember to adjust the index. First operand is asm string, then there 882fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // is a flag for each. 883fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng while (DefNo) { 884fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(DefIdx); 885fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 886fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 887fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 888fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng --DefNo; 889fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 890ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *DefOpIdx = DefIdx + UseOpIdx - FlagIdx; 891fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 892fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 893fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 894fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 895fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 896a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const TargetInstrDesc &TID = getDesc(); 897a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (UseOpIdx >= TID.getNumOperands()) 898a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 899a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 900a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (!MO.isReg() || !MO.isUse()) 901a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 902a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng int DefIdx = TID.getOperandConstraint(UseOpIdx, TOI::TIED_TO); 903a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefIdx == -1) 904a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 905a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefOpIdx) 906a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng *DefOpIdx = (unsigned)DefIdx; 907a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return true; 908a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng} 909a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 910576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 911576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 912576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 913576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 914576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 915d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || (!MO.isKill() && !MO.isDead())) 916576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 917576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 918576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 919576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 920576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 921576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 922576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 923576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 924576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 925576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 926576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 927576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 928576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 929576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 93019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 93119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 932749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 933b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 934b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 935b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 936b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 937b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 938b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 93919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 94019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 94119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 94219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 9439f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 9449f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 9459f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 946b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, 947a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool &SawStore, 948a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 949b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 950b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 951b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 952b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 953b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 954237dee125997dcaf16e391878465162cc680c0faDan Gohman if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) 955b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 956b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 957b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 958b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 959b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 960b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 961b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 962a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (TID->mayLoad() && !isInvariantLoad(AA)) 963b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 9647cc2c406d0c82bcf329048ced643ec77fcae60e6Evan Cheng // end of block, or if the load is volatile, we can't move it. 965d790a5ceee7138d8a5352432ccf862a42e3f5819Dan Gohman return !SawStore && !hasVolatileMemoryRef(); 9663e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 967b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 968b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 969b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 970df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 971df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 972b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, 973a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman unsigned DstReg, 974a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 975df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 976a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (!TII->isTriviallyReMaterializable(this, AA) || 977a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman !isSafeToMove(TII, SawStore, AA)) 978df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 979df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 980cbad42cfd1cc93a41ff26ea2e8895bfbc09f54f2Dan Gohman const MachineOperand &MO = getOperand(i); 981d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg()) 982df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 983df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 984df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 985df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 9868763c1c54413c9cd0b56e2860edb5856151a69fcEvan Cheng // MachineSink because the code is no longer in two-address form (at least 987df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 988df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 989df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 990df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 991df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 992df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 993df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 994df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 995df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 9963e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// hasVolatileMemoryRef - Return true if this instruction may have a 9973e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// volatile memory reference, or if the information describing the 9983e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// memory reference is not available. Return false if it is known to 9993e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// have no volatile memory references. 10003e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohmanbool MachineInstr::hasVolatileMemoryRef() const { 10013e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // An instruction known never to access memory won't have a volatile access. 10023e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (!TID->mayStore() && 10033e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->mayLoad() && 10043e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->isCall() && 10053e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->hasUnmodeledSideEffects()) 10063e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10073e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10083e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Otherwise, if the instruction has no memory reference information, 10093e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // conservatively assume it wasn't preserved. 10103e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (memoperands_empty()) 10113e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10123e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10133e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Check the memory reference information for volatile references. 1014c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator I = memoperands_begin(), E = memoperands_end(); I != E; ++I) 1015c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if ((*I)->isVolatile()) 10163e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10173e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10183e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10193e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman} 10203e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1021e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// isInvariantLoad - Return true if this instruction is loading from a 1022e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// location whose value is invariant across the function. For example, 1023e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// loading a value from the constant pool or from from the argument area 1024e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// of a function if it does not change. This should only return true of 1025e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// *all* loads the instruction does are invariant (if it does multiple loads). 1026e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanbool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { 1027e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction doesn't load at all, it isn't an invariant load. 1028e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (!TID->mayLoad()) 1029e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1030e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1031e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction has lost its memoperands, conservatively assume that 1032e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // it may not be an invariant load. 1033e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (memoperands_empty()) 1034e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1035e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1036e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman const MachineFrameInfo *MFI = getParent()->getParent()->getFrameInfo(); 1037e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1038e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman for (mmo_iterator I = memoperands_begin(), 1039e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman E = memoperands_end(); I != E; ++I) { 1040e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isVolatile()) return false; 1041e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isStore()) return false; 1042e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1043e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const Value *V = (*I)->getValue()) { 1044e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // A load from a constant PseudoSourceValue is invariant. 1045e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) 1046e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (PSV->isConstant(MFI)) 1047e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1048e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If we have an AliasAnalysis, ask it whether the memory is constant. 1049e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (AA && AA->pointsToConstantMemory(V)) 1050e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1051e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1052e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1053e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Otherwise assume conservatively. 1054e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1055e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1056e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1057e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Everything checks out. 1058e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return true; 1059e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman} 1060e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1061229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// isConstantValuePHI - If the specified instruction is a PHI that always 1062229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// merges together the same virtual register, return the register, otherwise 1063229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// return 0. 1064229694f0ee630ceabe96a8bd48952f6740f928b2Evan Chengunsigned MachineInstr::isConstantValuePHI() const { 1065229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng if (getOpcode() != TargetInstrInfo::PHI) 1066229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1067d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng assert(getNumOperands() >= 3 && 1068d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng "It's illegal to have a PHI without source operands"); 1069229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 1070229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned Reg = getOperand(1).getReg(); 1071229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) 1072229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng if (getOperand(i).getReg() != Reg) 1073229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1074229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return Reg; 1075229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng} 1076229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 107721326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 1078705e07f578e2b3af47ddab610feb4e7f2d3063a5Chris Lattner errs() << " " << *this; 10795ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 10805ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 10815ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { 108280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // We can be a bit tidier if we know the TargetMachine and/or MachineFunction. 108380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineFunction *MF = 0; 108480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = getParent()) { 108580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MF = MBB->getParent(); 108680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM && MF) 108780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 108880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 10890ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 10900ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print explicitly defined operands on the left of an assignment syntax. 109180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned StartOp = 0, e = getNumOperands(); 10920ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman for (; StartOp < e && getOperand(StartOp).isReg() && 10930ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).isDef() && 10940ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman !getOperand(StartOp).isImplicit(); 10950ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman ++StartOp) { 10960ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) OS << ", "; 10970ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).print(OS, TM); 10986a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 1099b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 11000ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) 11010ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " = "; 11020ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11030ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the opcode name. 1104749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 1105edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 11060ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the rest of the operands. 110780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool OmittedAnyCallClobbers = false; 110880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool FirstOp = true; 11096a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 111080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineOperand &MO = getOperand(i); 111180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 111280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Omit call-clobbered registers which aren't used anywhere. This makes 111380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // call instructions much less noisy on targets where calls clobber lots 111480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // of registers. Don't rely on MO.isDead() because we may be called before 111580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // LiveVariables is run, or we may be looking at a non-allocatable reg. 111680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MF && getDesc().isCall() && 111780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.isReg() && MO.isImplicit() && MO.isDef()) { 111880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned Reg = MO.getReg(); 111980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) { 112080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineRegisterInfo &MRI = MF->getRegInfo(); 112180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MRI.use_empty(Reg) && !MRI.isLiveOut(Reg)) { 112280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool HasAliasLive = false; 112380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman for (const unsigned *Alias = TM->getRegisterInfo()->getAliasSet(Reg); 112480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned AliasReg = *Alias; ++Alias) 112580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!MRI.use_empty(AliasReg) || MRI.isLiveOut(AliasReg)) { 112680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman HasAliasLive = true; 112780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman break; 112880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 112980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!HasAliasLive) { 113080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OmittedAnyCallClobbers = true; 113180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman continue; 113280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 113380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 113480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 113580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 113680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 113780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 11386a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 113980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.print(OS, TM); 114080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 114180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 114280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Briefly indicate whether any call clobbers were omitted. 114380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (OmittedAnyCallClobbers) { 114480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 114580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OS << " ..."; 11461049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 1147edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 11480ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman bool HaveSemi = false; 11498e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 11500ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 11510ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11520ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " mem:"; 1153c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator i = memoperands_begin(), e = memoperands_end(); 1154c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman i != e; ++i) { 1155c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << **i; 1156cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman if (next(i) != e) 1157cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << " "; 115869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 115969de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 116069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 116180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!debugLoc.isUnknown() && MF) { 11620ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 11630ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11640ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // TODO: print InlinedAtLoc information 11650ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 1166b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling DebugLocTuple DLT = MF->getDebugLocTuple(debugLoc); 1167261a7d983d38edd2f1ee6ff2cd0c12a2c2a8b044Dan Gohman DIScope Scope(DLT.Scope); 116875ae593a2750f9f7995980c3a03c0d972985e394Dan Gohman OS << " dbg:"; 11694b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman // Omit the directory, since it's usually long and uninteresting. 1170261a7d983d38edd2f1ee6ff2cd0c12a2c2a8b044Dan Gohman if (!Scope.isNull()) 11714b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << Scope.getFilename(); 11724b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman else 11734b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << "<unknown>"; 11744b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << ':' << DLT.Line; 11754b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman if (DLT.Col != 0) 11764b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << ':' << DLT.Col; 1177b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling } 1178b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling 11791049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 11801049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 11811049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 1182b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 11836f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1184b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 11859b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 11862ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 11873f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 11889b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 11894a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 11904a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 1191efb8e3e113cbf359d6a838c3b37fedc8305d19bbJakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || MO.isUndef()) 11929b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 11939b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 11949b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 11959b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 11964a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 11979b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 11983f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 11993f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isKill()) 12003f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked kill. 12013f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 1202ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen if (isPhysReg && isRegTiedToDefOperand(i)) 1203ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen // Two-address uses of physregs must not be marked kill. 1204ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen return true; 12053f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsKill(); 12063f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 12073f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 12083f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isKill() && 12093f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 12109b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 12119b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 12122ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 12132ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 12149b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1215b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1216b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1217b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 12189b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 12199b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 12209b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 12219b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 12229b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 12239b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 12249b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 12259b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 12269b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 12279b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 12284a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 1229b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 12303f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 12314a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 12324a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 12334a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 12344a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 1235b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1236b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 12373f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1238b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1239b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 1240b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 12416f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1242b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 12439b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 124401b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 12453f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 12469b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 1247b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1248b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 1249d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 12509b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 12519b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 12523f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Reg) 12533f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman continue; 12543f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman 12559b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 12563f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 12573f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isDead()) 12583f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked dead. 12593f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 12603f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsDead(); 12613f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 12623f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 12633f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isDead() && 12643f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 12659b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 12669b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 12672ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 126822ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 126922ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 127022ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 12719b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1272b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1273b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1274b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 12759b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 12769b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 12779b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 12789b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 12799b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 12809b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 12819b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 12829b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 12839b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 12849b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 12853f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // If not found, this means an alias of one of the operands is dead. Add a 12863f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // new implicit operand if required. 128731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (Found || !AddIfNotFound) 128831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return Found; 128931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 129031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner addOperand(MachineOperand::CreateReg(IncomingReg, 129131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDef*/, 129231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsImp*/, 129331530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner false /*IsKill*/, 129431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDead*/)); 129531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return true; 1296b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1297