MachineInstr.cpp revision b1bb4afbc7d801f9875be135c428b6f05511db5d
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" 185e9cd434234a36089daeee915f1dc02b96947fbaChris Lattner#include "llvm/Type.h" 1984bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/Value.h" 20cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman#include "llvm/Assembly/Writer.h" 218517e1f0beea9b5e47974f083396d53294c390adChris Lattner#include "llvm/CodeGen/MachineFunction.h" 22c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman#include "llvm/CodeGen/MachineMemOperand.h" 2362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner#include "llvm/CodeGen/MachineRegisterInfo.h" 2469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 251049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner#include "llvm/Target/TargetMachine.h" 26bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng#include "llvm/Target/TargetInstrInfo.h" 27f14cf85e334ff03bbdd23e473f14ffa4fb025e94Chris Lattner#include "llvm/Target/TargetInstrDesc.h" 286f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman#include "llvm/Target/TargetRegisterInfo.h" 29e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman#include "llvm/Analysis/AliasAnalysis.h" 30a26eae64ddf607549f9e47046d46ea5b9ec648b4Argyrios Kyrtzidis#include "llvm/Analysis/DebugInfo.h" 313b325334102144ec39910563eabebde434504564David Greene#include "llvm/Support/Debug.h" 32c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin#include "llvm/Support/ErrorHandling.h" 332c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman#include "llvm/Support/LeakDetector.h" 34ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman#include "llvm/Support/MathExtras.h" 35edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner#include "llvm/Support/raw_ostream.h" 36b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman#include "llvm/ADT/FoldingSet.h" 375f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen#include "llvm/Metadata.h" 380742b59913a7760eb26f08121cd244a37e83e3b3Chris Lattnerusing namespace llvm; 39d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 40f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 41f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineOperand Implementation 42f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 43f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 4462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandToRegInfo - Add this register operand to the specified 4562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// MachineRegisterInfo. If it is null, then the next/prev fields should be 4662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// explicitly nulled out. 4762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo) { 48d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(isReg() && "Can only add reg operand to use lists"); 4962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the reginfo pointer is null, just explicitly null out or next/prev 5162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // pointers, to ensure they are not garbage. 5262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 5362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Prev = 0; 5462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next = 0; 5562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 5662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 5762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, add this operand to the head of the registers use/def list. 5980fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner MachineOperand **Head = &RegInfo->getRegUseDefListHead(getReg()); 6062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 6180fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // For SSA values, we prefer to keep the definition at the start of the list. 6280fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // we do this by skipping over the definition if it is at the head of the 6380fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // list. 6480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner if (*Head && (*Head)->isDef()) 6580fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Head = &(*Head)->Contents.Reg.Next; 6680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner 6780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Next = *Head; 6862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Contents.Reg.Next) { 6962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(getReg() == Contents.Reg.Next->getReg() && 7062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Different regs on the same list!"); 7162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next->Contents.Reg.Prev = &Contents.Reg.Next; 7262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 7362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Prev = Head; 7580fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner *Head = this; 7662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 7762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 783bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// RemoveRegOperandFromRegInfo - Remove this register operand from the 793bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// MachineRegisterInfo it is linked with. 803bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohmanvoid MachineOperand::RemoveRegOperandFromRegInfo() { 813bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(isOnRegUseList() && "Reg operand is not on a use list"); 823bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman // Unlink this from the doubly linked list of operands. 833bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman MachineOperand *NextOp = Contents.Reg.Next; 843bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman *Contents.Reg.Prev = NextOp; 853bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman if (NextOp) { 863bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(NextOp->getReg() == getReg() && "Corrupt reg use/def chain!"); 873bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman NextOp->Contents.Reg.Prev = Contents.Reg.Prev; 883bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman } 893bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Prev = 0; 903bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Next = 0; 913bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman} 923bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman 9362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::setReg(unsigned Reg) { 9462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (getReg() == Reg) return; // No change. 9562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 9662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to change the register. If this operand is embedded 9762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // into a machine function, we need to update the old and new register's 9862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // use/def lists. 9962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 10062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 10162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) { 10262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 10362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 10462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 10562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 10662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 10762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 10862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, just change the register, no problem. :) 10962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 11062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 11162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 11262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToImmediate - Replace this operand with a new immediate operand of 11362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an immediate already, 11462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setImm method should be used. 11562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToImmediate(int64_t ImmVal) { 11662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is currently a register operand, and if this is in a 11762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // function, deregister the operand from the register's use/def list. 118d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg() && getParent() && getParent()->getParent() && 11962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner getParent()->getParent()->getParent()) 12062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 12162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 12262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Immediate; 12362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.ImmVal = ImmVal; 12462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 12562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 12662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToRegister - Replace this operand with a new register operand of 12762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an register already, 12862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setReg method should be used. 12962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp, 1304784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng bool isKill, bool isDead, bool isUndef) { 13162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is already a register operand, use setReg to update the 13262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def lists. 133d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg()) { 134e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen assert(!isEarlyClobber()); 13562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner setReg(Reg); 13662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 13762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, change this to a register and set the reg#. 13862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Register; 13962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 14062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 14162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is embedded in a function, add the operand to the 14262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def list. 14362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 14462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 14562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) 14662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 14762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 14862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 14962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDef = isDef; 15062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsImp = isImp; 15162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsKill = isKill; 15262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDead = isDead; 1534784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng IsUndef = isUndef; 154e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen IsEarlyClobber = false; 15562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner SubReg = 0; 15662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 15762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 158f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// isIdenticalTo - Return true if this operand is identical to the specified 159f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// operand. 160f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnerbool MachineOperand::isIdenticalTo(const MachineOperand &Other) const { 16131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (getType() != Other.getType() || 16231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner getTargetFlags() != Other.getTargetFlags()) 16331530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return false; 164f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 165f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 166c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unrecognized operand type"); 167f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 168f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getReg() == Other.getReg() && isDef() == Other.isDef() && 169f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getSubReg() == Other.getSubReg(); 170f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 171f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getImm() == Other.getImm(); 172e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 173e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman return getFPImm() == Other.getFPImm(); 174f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 175f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getMBB() == Other.getMBB(); 176f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 1778aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 178f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 1798aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex() && getOffset() == Other.getOffset(); 180f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 1818aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 182f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 183f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset(); 184f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 185f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return !strcmp(getSymbolName(), Other.getSymbolName()) && 186f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOffset() == Other.getOffset(); 1878c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 1888c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman return getBlockAddress() == Other.getBlockAddress(); 189f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 190f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 191f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 192f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// print - Print the specified machine operand. 193f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// 1945ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const { 19580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // If the instruction is embedded into a basic block, we can find the 19680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // target info for the instruction. 19780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM) 19880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineInstr *MI = getParent()) 19980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = MI->getParent()) 20080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineFunction *MF = MBB->getParent()) 20180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 20280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 203f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 204f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 2056f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman if (getReg() == 0 || TargetRegisterInfo::isVirtualRegister(getReg())) { 206f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%reg" << getReg(); 207f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else { 208f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM) 209e6d088acc90e422451e098555d383d4d65b6ce6bBill Wendling OS << "%" << TM->getRegisterInfo()->get(getReg()).Name; 210f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner else 2110ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "%physreg" << getReg(); 212f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 2132ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2144784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (getSubReg() != 0) 21531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << ':' << getSubReg(); 2162ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2174784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isDef() || isKill() || isDead() || isImplicit() || isUndef() || 2184784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng isEarlyClobber()) { 21931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '<'; 220f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner bool NeedComma = false; 2210789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isDef()) { 22231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 223913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen if (isEarlyClobber()) 224913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen OS << "earlyclobber,"; 2250789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isImplicit()) 2260789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-"; 227f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "def"; 228f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 2295affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } else if (isImplicit()) { 2300789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-use"; 2315affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng NeedComma = true; 2325affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } 2330789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng 2344784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead() || isUndef()) { 23531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 236181eb737b28628adc4376b973610a02039385026Bill Wendling if (isKill()) OS << "kill"; 237181eb737b28628adc4376b973610a02039385026Bill Wendling if (isDead()) OS << "dead"; 2384784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isUndef()) { 2394784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead()) 2404784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << ','; 2414784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << "undef"; 2424784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng } 243f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 24431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 245f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 246f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 247f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 248f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << getImm(); 249f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 250e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 251cf0fe8d813727383d630055bb9d1cde21b00b7e7Chris Lattner if (getFPImm()->getType()->isFloatTy()) 252e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToFloat(); 25331530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner else 254e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToDouble(); 255e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman break; 256f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 2570ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "<BB#" << getMBB()->getNumber() << ">"; 258f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 259f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 26031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<fi#" << getIndex() << '>'; 261f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 262f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2638aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<cp#" << getIndex(); 264f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 26531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 266f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 267f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 26831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<jt#" << getIndex() << '>'; 269f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 270f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 2718d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman OS << "<ga:"; 2728d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman WriteAsOperand(OS, getGlobal(), /*PrintType=*/false); 273f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 27431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 275f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 276f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 277f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<es:" << getSymbolName(); 278f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 27931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 280f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 2818c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 2825f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '<'; 2830ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman WriteAsOperand(OS, getBlockAddress(), /*PrintType=*/false); 2848c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman OS << '>'; 2858c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman break; 2865f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen case MachineOperand::MO_Metadata: 2875f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '<'; 2885f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen WriteAsOperand(OS, getMetadata(), /*PrintType=*/false); 2895f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '>'; 2905f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen break; 291f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: 292c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unrecognized operand type"); 293f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 29431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 29531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (unsigned TF = getTargetFlags()) 29631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "[TF=" << TF << ']'; 297f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 298f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 299f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 300ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman// MachineMemOperand Implementation 301ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 302ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 303ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan GohmanMachineMemOperand::MachineMemOperand(const Value *v, unsigned int f, 304ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman int64_t o, uint64_t s, unsigned int a) 305ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman : Offset(o), Size(s), V(v), 306ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman Flags((f & 7) | ((Log2_32(a) + 1) << 3)) { 30728f02fdd76f4efc05d14649e0eec90ce8e71e17eDan Gohman assert(getBaseAlignment() == a && "Alignment is not a power of 2!"); 308c5e1f98fdf44993c2bfe4c1ef633b2358cd718c1Dan Gohman assert((isLoad() || isStore()) && "Not a load/store!"); 309ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman} 310ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 311b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// Profile - Gather unique data for the object. 312b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// 313b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohmanvoid MachineMemOperand::Profile(FoldingSetNodeID &ID) const { 314b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Offset); 315b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Size); 316b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddPointer(V); 317b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Flags); 318b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman} 319b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman 320c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanvoid MachineMemOperand::refineAlignment(const MachineMemOperand *MMO) { 321c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // The Value and Offset may differ due to CSE. But the flags and size 322c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // should be the same. 323c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getFlags() == getFlags() && "Flags mismatch!"); 324c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getSize() == getSize() && "Size mismatch!"); 325c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 326c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO->getBaseAlignment() >= getBaseAlignment()) { 327c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Update the alignment value. 328c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Flags = (Flags & 7) | ((Log2_32(MMO->getBaseAlignment()) + 1) << 3); 329c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Also update the base and offset, because the new alignment may 330c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // not be applicable with the old ones. 331c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman V = MMO->getValue(); 332c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Offset = MMO->getOffset(); 333c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 334c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 335c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 3364b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// getAlignment - Return the minimum known alignment in bytes of the 3374b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// actual memory reference. 3384b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohmanuint64_t MachineMemOperand::getAlignment() const { 3394b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman return MinAlign(getBaseAlignment(), getOffset()); 3404b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman} 3414b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman 342c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanraw_ostream &llvm::operator<<(raw_ostream &OS, const MachineMemOperand &MMO) { 343c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert((MMO.isLoad() || MMO.isStore()) && 344cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman "SV has to be a load, store or both."); 345cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 346c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isVolatile()) 347cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "Volatile "; 348cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 349c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isLoad()) 350cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "LD"; 351c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isStore()) 352cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "ST"; 353c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << MMO.getSize(); 354cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 355cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the address information. 356cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "["; 357c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (!MMO.getValue()) 358cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "<unknown>"; 359cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman else 360c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman WriteAsOperand(OS, MMO.getValue(), /*PrintType=*/false); 361cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 362cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // If the alignment of the memory reference itself differs from the alignment 363cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // of the base pointer, print the base alignment explicitly, next to the base 364cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // pointer. 365c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment()) 366c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getBaseAlignment() << ")"; 367cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 368c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getOffset() != 0) 369c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "+" << MMO.getOffset(); 370cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "]"; 371cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 372cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the alignment of the reference. 373c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment() || 374c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MMO.getBaseAlignment() != MMO.getSize()) 375c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getAlignment() << ")"; 376cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 377cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman return OS; 378cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman} 379cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 380ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 381f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineInstr Implementation 382f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 383f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 384c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// MachineInstr ctor - This constructor creates a dummy MachineInstr with 38567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng/// TID NULL and no operands. 386c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr() 387834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(0), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 388c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(DebugLoc::getUnknownLoc()) { 3892c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 3902c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 3917279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner} 3927279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner 39367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Chengvoid MachineInstr::addImplicitDefUseOperands() { 39467f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 395a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpDefs = TID->ImplicitDefs; *ImpDefs; ++ImpDefs) 3968019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpDefs, true, true)); 39767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 398a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpUses = TID->ImplicitUses; *ImpUses; ++ImpUses) 3998019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpUses, false, true)); 400d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 401d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 402d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng/// MachineInstr ctor - This constructor create a MachineInstr and add the 403c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// implicit operands. It reserves space for number of operands specified by 404749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner/// TargetInstrDesc or the numOperands if it is not zero. (for 405c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// instructions with variable number of operands). 406749c6f6b5ed301c84aac562e414486549d7b98ebChris LattnerMachineInstr::MachineInstr(const TargetInstrDesc &tid, bool NoImp) 407834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 408834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman MemRefs(0), MemRefsEnd(0), Parent(0), 40906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 410349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitDefs()) 411349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 412d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 413349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner if (!NoImp && TID->getImplicitUses()) 414349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 415d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 416349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 417fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 418fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 4192c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4202c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 421d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 422d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 42306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 42406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(const TargetInstrDesc &tid, const DebugLoc dl, 42506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp) 426834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 427c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 42806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitDefs()) 42906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 43006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 43106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp && TID->getImplicitUses()) 43206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 43306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 43406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 43506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp) 43606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 43706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 43806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 43906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 44006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 44106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - Work exactly the same as the ctor two above, except 44206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// that the MachineInstr is created and added to the end of the specified 44306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// basic block. 44406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// 44506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const TargetInstrDesc &tid) 446834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 447834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman MemRefs(0), MemRefsEnd(0), Parent(0), 44806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen debugLoc(DebugLoc::getUnknownLoc()) { 44906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen assert(MBB && "Cannot use inserting ctor with null basic block!"); 45006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitDefs) 45106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 45206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 45306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (TID->ImplicitUses) 45406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 45506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen NumImplicitOps++; 45606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 45706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 45806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 45906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 46006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen MBB->push_back(this); // Add instruction to end of basic block! 46106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 46206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 46306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 464ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 46506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 466749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 467834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 468c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 469ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 47067f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 471349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpDefs = TID->getImplicitDefs(); *ImpDefs; ++ImpDefs) 472d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 47367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 474349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner for (const unsigned *ImpUses = TID->getImplicitUses(); *ImpUses; ++ImpUses) 475d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng NumImplicitOps++; 476349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 47767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 4782c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4792c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 480ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 481ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 482ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 483ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 484ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 4851ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 486834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&MI.getDesc()), NumImplicitOps(0), AsmPrinterFlags(0), 487c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs(MI.MemRefs), MemRefsEnd(MI.MemRefsEnd), 488c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(MI.getDebugLoc()) { 489943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 490b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 491ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 4921ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 4931ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 4941ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 4950c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 4968e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 497f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 4986116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 4996116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 500466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 501466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 502ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 5032c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 504e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 50562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 506e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 507d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 50862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 50962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 510e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 511aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 512aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 51362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 51462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 51562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 51662ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 51762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 5184e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 51962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 52062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 52162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 52362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 52462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 52562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 52662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 527d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 52862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 52962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 53062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 53162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 53362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 53462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 53562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 53662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 537d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 53862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 53962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 54062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 54162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 54262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 54362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 54462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 54562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 54662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 54762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 548d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman bool isImpReg = Op.isReg() && Op.isImplicit(); 54962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 55062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 55162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 552bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman MachineRegisterInfo *RegInfo = getRegInfo(); 553bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman 55462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 55562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 55662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 55762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 55862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 55962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 56062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 56162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 56362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 56462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 56562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 56606801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Op.isReg()) { 567bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman Operands.back().AddRegOperandToRegInfo(RegInfo); 56806801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 56906801722a43c697eff0acee905de6b50257ce19bJim Grosbach unsigned OpNo = Operands.size() - 1; 57006801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 57106801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 57206801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 57362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 57462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 57562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 57662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 57862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 57962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 58062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 58162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 58262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 58362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 58462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 58562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 58662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 58762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 58862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 58906801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg()) { 59062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 59106801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 59206801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 59306801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 59406801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 59562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 59762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 59862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 59962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 60062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 60162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 60262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 60362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 60462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 60562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 606d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 60762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 60862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 60962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 61162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 61262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 61362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61406801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg()) { 61562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 61606801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 61706801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 61806801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 61906801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 62062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 62262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 623d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 62462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 62562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 62662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 62762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 62862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 62962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 63062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 63162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 63362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 63462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 63662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 63706801722a43c697eff0acee905de6b50257ce19bJim Grosbach 63806801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 63906801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg() 64006801722a43c697eff0acee905de6b50257ce19bJim Grosbach && TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 64106801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 64262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 64462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 64662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 64762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 64862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 64962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 65062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 65162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 65262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 65362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 654d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 65562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 65662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 65762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 65862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 65962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 66062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 66162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 66262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 66362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 66462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 66562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 66662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 667d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 66862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 66962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 67062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 67162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 67362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 67562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 676d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 67762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 67862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 67962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 68062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 68162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 682c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction. 683c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// This function should be used only occasionally. The setMemRefs function 684c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// is the primary method for setting up a MachineInstr's MemRefs list. 6858e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 686c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MO) { 687c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefs = MemRefs; 688c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefsEnd = MemRefsEnd; 6898e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 690c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman size_t NewNum = (MemRefsEnd - MemRefs) + 1; 691c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefs = MF.allocateMemRefsArray(NewNum); 692c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefsEnd = NewMemRefs + NewNum; 6938e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 694c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman std::copy(OldMemRefs, OldMemRefsEnd, NewMemRefs); 695c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman NewMemRefs[NewNum - 1] = MO; 696c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 697c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 698c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefsEnd = NewMemRefsEnd; 699c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 70062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 70148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 70248d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 70348d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 70448d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 70548d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 70648d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 70748d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 70848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 70948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 7108e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 7118e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 7128e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 7138e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 7148e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 7158e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 7168e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 7178e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 71821326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 71921326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 7202a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 721349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 7228f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 7233497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 724413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 72570bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 72670bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 72719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 72819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 72919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 730349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 7318f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 73219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 73319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7349407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman for (unsigned i = NumOperands, e = getNumOperands(); i != e; ++i) { 7359407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman const MachineOperand &MO = getOperand(i); 736d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isImplicit()) 73719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 73819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 73919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 74019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 74119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7428ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 7434406604047423576e36657c7ede266ca42e79642Dan Gohman/// isLabel - Returns true if the MachineInstr represents a label. 7444406604047423576e36657c7ede266ca42e79642Dan Gohman/// 7454406604047423576e36657c7ede266ca42e79642Dan Gohmanbool MachineInstr::isLabel() const { 7464406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL || 7474406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::EH_LABEL || 7484406604047423576e36657c7ede266ca42e79642Dan Gohman getOpcode() == TargetInstrInfo::GC_LABEL; 7494406604047423576e36657c7ede266ca42e79642Dan Gohman} 7504406604047423576e36657c7ede266ca42e79642Dan Gohman 751bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// isDebugLabel - Returns true if the MachineInstr represents a debug label. 752bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng/// 753bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Chengbool MachineInstr::isDebugLabel() const { 7544406604047423576e36657c7ede266ca42e79642Dan Gohman return getOpcode() == TargetInstrInfo::DBG_LABEL; 755bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng} 756bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng 757faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 758f9ca50e3dce88b2f9e2f2f0cac2d3ed78afda841Jim Grosbach/// the specific register or -1 if it is not found. It further tightens 75976d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 7606130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 7616130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 762576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 763f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 764d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 7656130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7666130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7676130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 7686130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7696130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7706130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7716130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7726130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7736130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 77476d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 77532eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 776b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 77732eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 778b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 779b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng 7806130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 781703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 782703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 783703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 7846130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, 7856130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 786b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 7876130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 788d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 7896130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7906130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7916130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7926130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 7936130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 7946130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 7956130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 7966130f66eaae89f8878590796977678afa8448926Evan Cheng if (!isDead || MO.isDead()) 7976130f66eaae89f8878590796977678afa8448926Evan Cheng return i; 798576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 7996130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 800576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 80119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 802f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 803f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 804f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 805f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 806749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 807749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 80819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 809749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 810f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 81119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 81219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 813f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 81419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 815576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 816d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// isRegTiedToUseOperand - Given the index of a register def operand, 817d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// check if the register def is tied to a source operand, due to either 818d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// two-address elimination or inline assembly constraints. Returns the 819d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// first tied use operand index by reference is UseOpIdx is not null. 820ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 821ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx) const { 822fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 823d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(DefOpIdx >= 2); 824d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson const MachineOperand &MO = getOperand(DefOpIdx); 825c30aa7b3de0ce8c37e9630e8e7a73cb83c808c62Chris Lattner if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0) 826fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 827ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng // Determine the actual operand index that corresponds to this index. 828fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo = 0; 829ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned DefPart = 0; 830fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 1, e = getNumOperands(); i < e; ) { 831fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 83245d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 83345d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!FMO.isImm()) 83445d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 835fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 836ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm()); 837ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned PrevDef = i + 1; 838ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng i = PrevDef + NumOps; 839ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (i > DefOpIdx) { 840ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng DefPart = DefOpIdx - PrevDef; 841fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng break; 842ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 843fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng ++DefNo; 844fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 845ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { 846fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 847fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!FMO.isImm()) 848fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 849fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse()) 850fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 851fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned Idx; 852ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) && 853d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson Idx == DefNo) { 854d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 855ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *UseOpIdx = (unsigned)i + 1 + DefPart; 856fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 857d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 858fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 859ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 860fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 861fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 862d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!"); 863749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 864ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 865ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 8662ce7f2068f13566f5a70ee779e3bb83a6cb8d942Dan Gohman if (MO.isReg() && MO.isUse() && 867d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefOpIdx) { 868d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 869d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i; 870ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 871d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 87232dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 87332dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 87432dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 87532dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 876a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// isRegTiedToDefOperand - Return true if the operand of the specified index 877a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// is a register use and it is tied to an def operand. It also returns the def 878a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// operand index by reference. 879ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 880ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx) const { 881fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (getOpcode() == TargetInstrInfo::INLINEASM) { 882fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 8830c8382ce9a96e36325b17d242fd1af16564d8a85Chris Lattner if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) 884fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 88557e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen 88657e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen // Find the flag operand corresponding to UseOpIdx 88757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen unsigned FlagIdx, NumOps=0; 88857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) { 88957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 89045d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 89145d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!UFMO.isImm()) 89245d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 89357e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm()); 89457e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen assert(NumOps < getNumOperands() && "Invalid inline asm flag"); 89557e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (UseOpIdx < FlagIdx+NumOps+1) 89657e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen break; 897ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 89857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (FlagIdx >= UseOpIdx) 899ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 90057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 901fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo; 902fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) { 903fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!DefOpIdx) 904fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 905fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 906fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefIdx = 1; 907fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Remember to adjust the index. First operand is asm string, then there 908fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // is a flag for each. 909fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng while (DefNo) { 910fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(DefIdx); 911fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 912fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 913fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 914fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng --DefNo; 915fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 916ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *DefOpIdx = DefIdx + UseOpIdx - FlagIdx; 917fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 918fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 919fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 920fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 921fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 922a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const TargetInstrDesc &TID = getDesc(); 923a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (UseOpIdx >= TID.getNumOperands()) 924a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 925a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 926a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (!MO.isReg() || !MO.isUse()) 927a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 928a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng int DefIdx = TID.getOperandConstraint(UseOpIdx, TOI::TIED_TO); 929a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefIdx == -1) 930a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 931a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefOpIdx) 932a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng *DefOpIdx = (unsigned)DefIdx; 933a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return true; 934a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng} 935a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 936576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 937576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 938576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 939576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 940576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 941d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || (!MO.isKill() && !MO.isDead())) 942576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 943576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 944576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 945576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 946576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 947576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 948576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 949576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 950576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 951576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 952576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 953576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 954576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 955576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 95619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 95719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 958749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 959b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 960b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 961b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 962b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 963b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 964b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 96519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 96619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 96719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 96819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 9699f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 9709f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 9719f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 972b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, 973a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool &SawStore, 974a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 975b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 976b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 977b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 978b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 979b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 980237dee125997dcaf16e391878465162cc680c0faDan Gohman if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) 981b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 982b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 983b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 984b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 985b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 986b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 987b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 988a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (TID->mayLoad() && !isInvariantLoad(AA)) 989b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 9907cc2c406d0c82bcf329048ced643ec77fcae60e6Evan Cheng // end of block, or if the load is volatile, we can't move it. 991d790a5ceee7138d8a5352432ccf862a42e3f5819Dan Gohman return !SawStore && !hasVolatileMemoryRef(); 9923e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 993b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 994b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 995b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 996df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 997df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 998b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, 999a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman unsigned DstReg, 1000a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman AliasAnalysis *AA) const { 1001df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 1002a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (!TII->isTriviallyReMaterializable(this, AA) || 1003a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman !isSafeToMove(TII, SawStore, AA)) 1004df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1005df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1006cbad42cfd1cc93a41ff26ea2e8895bfbc09f54f2Dan Gohman const MachineOperand &MO = getOperand(i); 1007d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg()) 1008df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 1009df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 1010df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 1011df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 10128763c1c54413c9cd0b56e2860edb5856151a69fcEvan Cheng // MachineSink because the code is no longer in two-address form (at least 1013df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 1014df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 1015df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1016df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 1017df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1018df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 1019df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 1020df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 1021df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 10223e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// hasVolatileMemoryRef - Return true if this instruction may have a 10233e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// volatile memory reference, or if the information describing the 10243e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// memory reference is not available. Return false if it is known to 10253e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// have no volatile memory references. 10263e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohmanbool MachineInstr::hasVolatileMemoryRef() const { 10273e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // An instruction known never to access memory won't have a volatile access. 10283e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (!TID->mayStore() && 10293e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->mayLoad() && 10303e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->isCall() && 10313e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->hasUnmodeledSideEffects()) 10323e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10333e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10343e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Otherwise, if the instruction has no memory reference information, 10353e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // conservatively assume it wasn't preserved. 10363e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (memoperands_empty()) 10373e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10383e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10393e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Check the memory reference information for volatile references. 1040c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator I = memoperands_begin(), E = memoperands_end(); I != E; ++I) 1041c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if ((*I)->isVolatile()) 10423e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 10433e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 10443e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 10453e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman} 10463e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1047e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// isInvariantLoad - Return true if this instruction is loading from a 1048e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// location whose value is invariant across the function. For example, 1049e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// loading a value from the constant pool or from from the argument area 1050e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// of a function if it does not change. This should only return true of 1051e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// *all* loads the instruction does are invariant (if it does multiple loads). 1052e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanbool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { 1053e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction doesn't load at all, it isn't an invariant load. 1054e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (!TID->mayLoad()) 1055e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1056e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1057e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction has lost its memoperands, conservatively assume that 1058e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // it may not be an invariant load. 1059e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (memoperands_empty()) 1060e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1061e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1062e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman const MachineFrameInfo *MFI = getParent()->getParent()->getFrameInfo(); 1063e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1064e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman for (mmo_iterator I = memoperands_begin(), 1065e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman E = memoperands_end(); I != E; ++I) { 1066e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isVolatile()) return false; 1067e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isStore()) return false; 1068e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1069e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const Value *V = (*I)->getValue()) { 1070e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // A load from a constant PseudoSourceValue is invariant. 1071e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) 1072e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (PSV->isConstant(MFI)) 1073e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1074e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If we have an AliasAnalysis, ask it whether the memory is constant. 1075e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (AA && AA->pointsToConstantMemory(V)) 1076e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1077e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1078e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1079e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Otherwise assume conservatively. 1080e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1081e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1082e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1083e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Everything checks out. 1084e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return true; 1085e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman} 1086e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1087229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// isConstantValuePHI - If the specified instruction is a PHI that always 1088229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// merges together the same virtual register, return the register, otherwise 1089229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// return 0. 1090229694f0ee630ceabe96a8bd48952f6740f928b2Evan Chengunsigned MachineInstr::isConstantValuePHI() const { 1091229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng if (getOpcode() != TargetInstrInfo::PHI) 1092229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1093d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng assert(getNumOperands() >= 3 && 1094d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng "It's illegal to have a PHI without source operands"); 1095229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 1096229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned Reg = getOperand(1).getReg(); 1097229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) 1098229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng if (getOperand(i).getReg() != Reg) 1099229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1100229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return Reg; 1101229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng} 1102229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 110321326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 11043b325334102144ec39910563eabebde434504564David Greene dbgs() << " " << *this; 11055ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 11065ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 11075ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { 110880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // We can be a bit tidier if we know the TargetMachine and/or MachineFunction. 110980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineFunction *MF = 0; 111080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = getParent()) { 111180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MF = MBB->getParent(); 111280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM && MF) 111380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 111480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 11150ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11160ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print explicitly defined operands on the left of an assignment syntax. 111780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned StartOp = 0, e = getNumOperands(); 11180ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman for (; StartOp < e && getOperand(StartOp).isReg() && 11190ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).isDef() && 11200ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman !getOperand(StartOp).isImplicit(); 11210ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman ++StartOp) { 11220ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) OS << ", "; 11230ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).print(OS, TM); 11246a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 1125b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 11260ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) 11270ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " = "; 11280ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11290ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the opcode name. 1130749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 1131edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 11320ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the rest of the operands. 113380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool OmittedAnyCallClobbers = false; 113480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool FirstOp = true; 11356a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 113680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineOperand &MO = getOperand(i); 113780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 113880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Omit call-clobbered registers which aren't used anywhere. This makes 113980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // call instructions much less noisy on targets where calls clobber lots 114080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // of registers. Don't rely on MO.isDead() because we may be called before 114180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // LiveVariables is run, or we may be looking at a non-allocatable reg. 114280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MF && getDesc().isCall() && 114380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.isReg() && MO.isImplicit() && MO.isDef()) { 114480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned Reg = MO.getReg(); 114580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) { 114680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineRegisterInfo &MRI = MF->getRegInfo(); 114780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MRI.use_empty(Reg) && !MRI.isLiveOut(Reg)) { 114880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool HasAliasLive = false; 114980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman for (const unsigned *Alias = TM->getRegisterInfo()->getAliasSet(Reg); 115080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned AliasReg = *Alias; ++Alias) 115180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!MRI.use_empty(AliasReg) || MRI.isLiveOut(AliasReg)) { 115280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman HasAliasLive = true; 115380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman break; 115480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 115580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!HasAliasLive) { 115680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OmittedAnyCallClobbers = true; 115780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman continue; 115880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 115980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 116080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 116180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 116280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 116380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 11646a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 1165b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (i < getDesc().NumOperands) { 1166b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen const TargetOperandInfo &TOI = getDesc().OpInfo[i]; 1167b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (TOI.isPredicate()) 1168b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen OS << "pred:"; 1169b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (TOI.isOptionalDef()) 1170b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen OS << "opt:"; 1171b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen } 117280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.print(OS, TM); 117380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 117480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 117580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Briefly indicate whether any call clobbers were omitted. 117680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (OmittedAnyCallClobbers) { 1177164558e59c2a321bf670e31a7bdde0d38d79bb67Bill Wendling if (!FirstOp) OS << ","; 117880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OS << " ..."; 11791049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 1180edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 11810ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman bool HaveSemi = false; 11828e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 11830ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 11840ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11850ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " mem:"; 1186c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator i = memoperands_begin(), e = memoperands_end(); 1187c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman i != e; ++i) { 1188c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << **i; 1189cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman if (next(i) != e) 1190cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << " "; 119169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 119269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 119369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 119480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!debugLoc.isUnknown() && MF) { 1195ad2cf9dd63d15a8bcd7d34a379a1e983fd8c66f7Bill Wendling if (!HaveSemi) OS << ";"; 11960ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11970ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // TODO: print InlinedAtLoc information 11980ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 11996b61f5816e22ac7f7e009aaf3e11ccce7cfeb085Devang Patel DILocation DLT = MF->getDILocation(debugLoc); 12006b61f5816e22ac7f7e009aaf3e11ccce7cfeb085Devang Patel DIScope Scope = DLT.getScope(); 120175ae593a2750f9f7995980c3a03c0d972985e394Dan Gohman OS << " dbg:"; 12024b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman // Omit the directory, since it's usually long and uninteresting. 1203261a7d983d38edd2f1ee6ff2cd0c12a2c2a8b044Dan Gohman if (!Scope.isNull()) 12044b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << Scope.getFilename(); 12054b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman else 12064b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << "<unknown>"; 12076b61f5816e22ac7f7e009aaf3e11ccce7cfeb085Devang Patel OS << ':' << DLT.getLineNumber(); 12086b61f5816e22ac7f7e009aaf3e11ccce7cfeb085Devang Patel if (DLT.getColumnNumber() != 0) 12096b61f5816e22ac7f7e009aaf3e11ccce7cfeb085Devang Patel OS << ':' << DLT.getColumnNumber(); 1210b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling } 1211b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling 12121049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 12131049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 12141049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 1215b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 12166f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1217b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 12189b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 12192ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 12203f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 12219b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 12224a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 12234a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 1224efb8e3e113cbf359d6a838c3b37fedc8305d19bbJakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || MO.isUndef()) 12259b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 12269b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 12279b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 12289b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 12294a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 12309b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 12313f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 12323f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isKill()) 12333f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked kill. 12343f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 1235ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen if (isPhysReg && isRegTiedToDefOperand(i)) 1236ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen // Two-address uses of physregs must not be marked kill. 1237ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen return true; 12383f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsKill(); 12393f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 12403f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 12413f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isKill() && 12423f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 12439b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 12449b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 12452ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 12462ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 12479b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1248b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1249b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1250b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 12519b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 12529b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 12539b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 12549b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 12559b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 12569b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 12579b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 12589b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 12599b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 12609b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 12614a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 1262b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 12633f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 12644a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 12654a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 12664a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 12674a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 1268b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1269b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 12703f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1271b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1272b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 1273b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 12746f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1275b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 12769b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 127701b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 12783f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 12799b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 1280b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1281b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 1282d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 12839b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 12849b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 12853f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Reg) 12863f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman continue; 12873f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman 12889b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 12893f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 12903f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isDead()) 12913f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked dead. 12923f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 12933f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsDead(); 12943f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 12953f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 12963f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isDead() && 12973f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 12989b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 12999b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 13002ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 130122ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 130222ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 130322ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 13049b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1305b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1306b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1307b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 13089b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 13099b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 13109b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 13119b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 13129b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 13139b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 13149b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 13159b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 13169b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 13179b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 13183f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // If not found, this means an alias of one of the operands is dead. Add a 13193f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // new implicit operand if required. 132031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (Found || !AddIfNotFound) 132131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return Found; 132231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 132331530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner addOperand(MachineOperand::CreateReg(IncomingReg, 132431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDef*/, 132531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsImp*/, 132631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner false /*IsKill*/, 132731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDead*/)); 132831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return true; 1329b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 13308efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 13318efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesenvoid MachineInstr::addRegisterDefined(unsigned IncomingReg, 13328efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen const TargetRegisterInfo *RegInfo) { 13338efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen MachineOperand *MO = findRegisterDefOperand(IncomingReg, false, RegInfo); 13348efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen if (!MO || MO->getSubReg()) 13358efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen addOperand(MachineOperand::CreateReg(IncomingReg, 13368efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen true /*IsDef*/, 13378efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen true /*IsImp*/)); 13388efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen} 1339