MachineInstr.cpp revision db4971259ce94cea26e555e9ade82672a3581f5c
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" 1872aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner#include "llvm/Metadata.h" 195e9cd434234a36089daeee915f1dc02b96947fbaChris Lattner#include "llvm/Type.h" 2084bc5427d6883f73cfeae3da640acd011d35c006Chris Lattner#include "llvm/Value.h" 21cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman#include "llvm/Assembly/Writer.h" 22506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng#include "llvm/CodeGen/MachineConstantPool.h" 238517e1f0beea9b5e47974f083396d53294c390adChris Lattner#include "llvm/CodeGen/MachineFunction.h" 24c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman#include "llvm/CodeGen/MachineMemOperand.h" 2562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner#include "llvm/CodeGen/MachineRegisterInfo.h" 2669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman#include "llvm/CodeGen/PseudoSourceValue.h" 2772aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner#include "llvm/MC/MCSymbol.h" 281049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner#include "llvm/Target/TargetMachine.h" 29bb81d97feb396a8bb21d074db1c57e9f66525f40Evan Cheng#include "llvm/Target/TargetInstrInfo.h" 30f14cf85e334ff03bbdd23e473f14ffa4fb025e94Chris Lattner#include "llvm/Target/TargetInstrDesc.h" 316f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman#include "llvm/Target/TargetRegisterInfo.h" 32e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman#include "llvm/Analysis/AliasAnalysis.h" 33a26eae64ddf607549f9e47046d46ea5b9ec648b4Argyrios Kyrtzidis#include "llvm/Analysis/DebugInfo.h" 343b325334102144ec39910563eabebde434504564David Greene#include "llvm/Support/Debug.h" 35c25e7581b9b8088910da31702d4ca21c4734c6d7Torok Edwin#include "llvm/Support/ErrorHandling.h" 362c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman#include "llvm/Support/LeakDetector.h" 37ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman#include "llvm/Support/MathExtras.h" 38edfb72c6288118ab9c900a560ded89dfaa107296Chris Lattner#include "llvm/Support/raw_ostream.h" 39b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman#include "llvm/ADT/FoldingSet.h" 400742b59913a7760eb26f08121cd244a37e83e3b3Chris Lattnerusing namespace llvm; 41d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 42f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 43f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineOperand Implementation 44f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 45f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 4662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandToRegInfo - Add this register operand to the specified 4762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// MachineRegisterInfo. If it is null, then the next/prev fields should be 4862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// explicitly nulled out. 4962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::AddRegOperandToRegInfo(MachineRegisterInfo *RegInfo) { 50d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(isReg() && "Can only add reg operand to use lists"); 5162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 5262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the reginfo pointer is null, just explicitly null out or next/prev 5362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // pointers, to ensure they are not garbage. 5462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 5562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Prev = 0; 5662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next = 0; 5762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 5862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 5962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 6062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, add this operand to the head of the registers use/def list. 6180fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner MachineOperand **Head = &RegInfo->getRegUseDefListHead(getReg()); 6262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 6380fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // For SSA values, we prefer to keep the definition at the start of the list. 6480fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // we do this by skipping over the definition if it is at the head of the 6580fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner // list. 6680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner if (*Head && (*Head)->isDef()) 6780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Head = &(*Head)->Contents.Reg.Next; 6880fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner 6980fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Next = *Head; 7062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Contents.Reg.Next) { 7162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(getReg() == Contents.Reg.Next->getReg() && 7262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Different regs on the same list!"); 7362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.Next->Contents.Reg.Prev = &Contents.Reg.Next; 7462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 7562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 7680fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner Contents.Reg.Prev = Head; 7780fe5311b5e9e5c4642ff46ba2377173c17797f6Chris Lattner *Head = this; 7862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 7962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 803bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// RemoveRegOperandFromRegInfo - Remove this register operand from the 813bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman/// MachineRegisterInfo it is linked with. 823bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohmanvoid MachineOperand::RemoveRegOperandFromRegInfo() { 833bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(isOnRegUseList() && "Reg operand is not on a use list"); 843bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman // Unlink this from the doubly linked list of operands. 853bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman MachineOperand *NextOp = Contents.Reg.Next; 863bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman *Contents.Reg.Prev = NextOp; 873bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman if (NextOp) { 883bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman assert(NextOp->getReg() == getReg() && "Corrupt reg use/def chain!"); 893bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman NextOp->Contents.Reg.Prev = Contents.Reg.Prev; 903bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman } 913bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Prev = 0; 923bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman Contents.Reg.Next = 0; 933bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman} 943bc1a3735f216f4a122fe4a05d39f63888ab205aDan Gohman 9562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::setReg(unsigned Reg) { 9662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (getReg() == Reg) return; // No change. 9762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 9862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to change the register. If this operand is embedded 9962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // into a machine function, we need to update the old and new register's 10062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // use/def lists. 10162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 10262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 10362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) { 10462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 10562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 10662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 10762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 10862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 10962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 11062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, just change the register, no problem. :) 11162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 11262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 11362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 1142da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesenvoid MachineOperand::substVirtReg(unsigned Reg, unsigned SubIdx, 1152da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen const TargetRegisterInfo &TRI) { 1162da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen assert(TargetRegisterInfo::isVirtualRegister(Reg)); 1172da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen if (SubIdx && getSubReg()) 1182da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen SubIdx = TRI.composeSubRegIndices(SubIdx, getSubReg()); 1192da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen setReg(Reg); 120a5135f60dd95275dcbc1123f866889151ced933dJakob Stoklund Olesen if (SubIdx) 121a5135f60dd95275dcbc1123f866889151ced933dJakob Stoklund Olesen setSubReg(SubIdx); 1222da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen} 1232da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen 1242da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesenvoid MachineOperand::substPhysReg(unsigned Reg, const TargetRegisterInfo &TRI) { 1252da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen assert(TargetRegisterInfo::isPhysicalRegister(Reg)); 1262da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen if (getSubReg()) { 1272da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen Reg = TRI.getSubReg(Reg, getSubReg()); 1282da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen assert(Reg && "Invalid SubReg for physical register"); 1292da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen setSubReg(0); 1302da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen } 1312da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen setReg(Reg); 1322da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen} 1332da53370241fdd1b5c291483311b34e609f06c73Jakob Stoklund Olesen 13462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToImmediate - Replace this operand with a new immediate operand of 13562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an immediate already, 13662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setImm method should be used. 13762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToImmediate(int64_t ImmVal) { 13862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is currently a register operand, and if this is in a 13962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // function, deregister the operand from the register's use/def list. 140d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg() && getParent() && getParent()->getParent() && 14162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner getParent()->getParent()->getParent()) 14262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandFromRegInfo(); 14362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 14462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Immediate; 14562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.ImmVal = ImmVal; 14662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 14762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 14862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// ChangeToRegister - Replace this operand with a new register operand of 14962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the specified value. If an operand is known to be an register already, 15062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// the setReg method should be used. 15162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineOperand::ChangeToRegister(unsigned Reg, bool isDef, bool isImp, 1529653f9ec970147a12216d787078eab2f8b9c122aDale Johannesen bool isKill, bool isDead, bool isUndef, 1539653f9ec970147a12216d787078eab2f8b9c122aDale Johannesen bool isDebug) { 15462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is already a register operand, use setReg to update the 15562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def lists. 156d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (isReg()) { 157e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen assert(!isEarlyClobber()); 15862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner setReg(Reg); 15962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 16062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, change this to a register and set the reg#. 16162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner OpKind = MO_Register; 16262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Contents.Reg.RegNo = Reg; 16362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 16462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this operand is embedded in a function, add the operand to the 16562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // register's use/def list. 16662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineInstr *MI = getParent()) 16762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = MI->getParent()) 16862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineFunction *MF = MBB->getParent()) 16962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandToRegInfo(&MF->getRegInfo()); 17062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 17162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 17262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDef = isDef; 17362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsImp = isImp; 17462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsKill = isKill; 17562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner IsDead = isDead; 1764784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng IsUndef = isUndef; 177e009180f2bbcf5edbe3b583936c37c4b3be2d082Dale Johannesen IsEarlyClobber = false; 1789653f9ec970147a12216d787078eab2f8b9c122aDale Johannesen IsDebug = isDebug; 17962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner SubReg = 0; 18062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 18162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 182f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// isIdenticalTo - Return true if this operand is identical to the specified 183f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// operand. 184f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattnerbool MachineOperand::isIdenticalTo(const MachineOperand &Other) const { 18531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (getType() != Other.getType() || 18631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner getTargetFlags() != Other.getTargetFlags()) 18731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return false; 188f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 189f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 190c23197a26f34f559ea9797de51e187087c039c42Torok Edwin default: llvm_unreachable("Unrecognized operand type"); 191f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 192f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getReg() == Other.getReg() && isDef() == Other.isDef() && 193f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getSubReg() == Other.getSubReg(); 194f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 195f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getImm() == Other.getImm(); 196e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 197e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman return getFPImm() == Other.getFPImm(); 198f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 199f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getMBB() == Other.getMBB(); 200f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 2018aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 202f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2038aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex() && getOffset() == Other.getOffset(); 204f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 2058aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner return getIndex() == Other.getIndex(); 206f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 207f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return getGlobal() == Other.getGlobal() && getOffset() == Other.getOffset(); 208f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 209f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner return !strcmp(getSymbolName(), Other.getSymbolName()) && 210f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner getOffset() == Other.getOffset(); 2118c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 2128c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman return getBlockAddress() == Other.getBlockAddress(); 21372aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_MCSymbol: 21472aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner return getMCSymbol() == Other.getMCSymbol(); 21524ad3ed71fe93059d1b46ffdbfe63259762bf547Chris Lattner case MachineOperand::MO_Metadata: 21624ad3ed71fe93059d1b46ffdbfe63259762bf547Chris Lattner return getMetadata() == Other.getMetadata(); 217f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 218f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 219f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 220f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// print - Print the specified machine operand. 221f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner/// 2225ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineOperand::print(raw_ostream &OS, const TargetMachine *TM) const { 22380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // If the instruction is embedded into a basic block, we can find the 22480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // target info for the instruction. 22580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM) 22680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineInstr *MI = getParent()) 22780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = MI->getParent()) 22880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineFunction *MF = MBB->getParent()) 22980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 23080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 231f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner switch (getType()) { 232f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Register: 2336f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman if (getReg() == 0 || TargetRegisterInfo::isVirtualRegister(getReg())) { 234f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "%reg" << getReg(); 235f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } else { 236f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (TM) 237e6d088acc90e422451e098555d383d4d65b6ce6bBill Wendling OS << "%" << TM->getRegisterInfo()->get(getReg()).Name; 238f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner else 2390ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "%physreg" << getReg(); 240f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 2412ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2421fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen if (getSubReg() != 0) { 2431fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen if (TM) 2441fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen OS << ':' << TM->getRegisterInfo()->getSubRegIndexName(getSubReg()); 2451fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen else 2461fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen OS << ':' << getSubReg(); 2471fc8e759a767077726f9be35b93767e68bdf101fJakob Stoklund Olesen } 2482ccc83966914593d98af5671ce10a3bf2dcf7513Dan Gohman 2494784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isDef() || isKill() || isDead() || isImplicit() || isUndef() || 2504784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng isEarlyClobber()) { 25131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '<'; 252f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner bool NeedComma = false; 2530789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isDef()) { 25431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 255913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen if (isEarlyClobber()) 256913d3dfac43f29921467f33aa743f28ee1bfc5d1Dale Johannesen OS << "earlyclobber,"; 2570789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng if (isImplicit()) 2580789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-"; 259f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "def"; 260f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner NeedComma = true; 2615affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } else if (isImplicit()) { 2620789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng OS << "imp-use"; 2635affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng NeedComma = true; 2645affca0763836e15ca15e78ed3a0fd56ef6b2e92Evan Cheng } 2650789707c49135bba69e0e308d0fbc41bb7cbe78aEvan Cheng 2664784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead() || isUndef()) { 26731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (NeedComma) OS << ','; 268181eb737b28628adc4376b973610a02039385026Bill Wendling if (isKill()) OS << "kill"; 269181eb737b28628adc4376b973610a02039385026Bill Wendling if (isDead()) OS << "dead"; 2704784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isUndef()) { 2714784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng if (isKill() || isDead()) 2724784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << ','; 2734784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng OS << "undef"; 2744784f1fc73abf6005b7b7262d395af71b57b1255Evan Cheng } 275f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 27631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 277f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 278f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 279f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_Immediate: 280f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << getImm(); 281f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 282e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman case MachineOperand::MO_FPImmediate: 283cf0fe8d813727383d630055bb9d1cde21b00b7e7Chris Lattner if (getFPImm()->getType()->isFloatTy()) 284e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToFloat(); 28531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner else 286e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman OS << getFPImm()->getValueAPF().convertToDouble(); 287e8b7ccf0c9a06831266d690d0b10ead71e0a4ac5Nate Begeman break; 288f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_MachineBasicBlock: 2890ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << "<BB#" << getMBB()->getNumber() << ">"; 290f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 291f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_FrameIndex: 29231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<fi#" << getIndex() << '>'; 293f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 294f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ConstantPoolIndex: 2958aa797aa51cd4ea1ec6f46f4891a6897944b75b2Chris Lattner OS << "<cp#" << getIndex(); 296f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 29731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 298f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 299f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_JumpTableIndex: 30031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "<jt#" << getIndex() << '>'; 301f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 302f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_GlobalAddress: 3038d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman OS << "<ga:"; 3048d4e3b5b48b245ed65259270a53fcaf0bf91d9f7Dan Gohman WriteAsOperand(OS, getGlobal(), /*PrintType=*/false); 305f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 30631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 307f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 308f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner case MachineOperand::MO_ExternalSymbol: 309f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner OS << "<es:" << getSymbolName(); 310f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner if (getOffset()) OS << "+" << getOffset(); 31131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << '>'; 312f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner break; 3138c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman case MachineOperand::MO_BlockAddress: 3145f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '<'; 3150ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman WriteAsOperand(OS, getBlockAddress(), /*PrintType=*/false); 3168c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman OS << '>'; 3178c2b52552c90f39e4b2fed43e309e599e742b6acDan Gohman break; 3185f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen case MachineOperand::MO_Metadata: 3195f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '<'; 3205f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen WriteAsOperand(OS, getMetadata(), /*PrintType=*/false); 3215f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen OS << '>'; 3225f72a5ebc84a1935878b5b2d3166a505c520cdfcDale Johannesen break; 32372aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_MCSymbol: 32472aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner OS << "<MCSym=" << *getMCSymbol() << '>'; 32572aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 326f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner default: 327c23197a26f34f559ea9797de51e187087c039c42Torok Edwin llvm_unreachable("Unrecognized operand type"); 328f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner } 32931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 33031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (unsigned TF = getTargetFlags()) 33131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner OS << "[TF=" << TF << ']'; 332f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner} 333f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 334f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 335ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman// MachineMemOperand Implementation 336ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 337ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 338ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan GohmanMachineMemOperand::MachineMemOperand(const Value *v, unsigned int f, 339ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman int64_t o, uint64_t s, unsigned int a) 340ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman : Offset(o), Size(s), V(v), 341ba2b297ca53cd685ba397177e9d2d8c239da971eDavid Greene Flags((f & ((1 << MOMaxBits) - 1)) | ((Log2_32(a) + 1) << MOMaxBits)) { 34228f02fdd76f4efc05d14649e0eec90ce8e71e17eDan Gohman assert(getBaseAlignment() == a && "Alignment is not a power of 2!"); 343c5e1f98fdf44993c2bfe4c1ef633b2358cd718c1Dan Gohman assert((isLoad() || isStore()) && "Not a load/store!"); 344ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman} 345ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman 346b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// Profile - Gather unique data for the object. 347b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman/// 348b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohmanvoid MachineMemOperand::Profile(FoldingSetNodeID &ID) const { 349b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Offset); 350b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Size); 351b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddPointer(V); 352b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman ID.AddInteger(Flags); 353b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman} 354b8d2f550b84523e8a73198f98e5d450ec3b4fee7Dan Gohman 355c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanvoid MachineMemOperand::refineAlignment(const MachineMemOperand *MMO) { 356c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // The Value and Offset may differ due to CSE. But the flags and size 357c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // should be the same. 358c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getFlags() == getFlags() && "Flags mismatch!"); 359c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert(MMO->getSize() == getSize() && "Size mismatch!"); 360c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 361c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO->getBaseAlignment() >= getBaseAlignment()) { 362c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Update the alignment value. 363ba2b297ca53cd685ba397177e9d2d8c239da971eDavid Greene Flags = (Flags & ((1 << MOMaxBits) - 1)) | 364ba2b297ca53cd685ba397177e9d2d8c239da971eDavid Greene ((Log2_32(MMO->getBaseAlignment()) + 1) << MOMaxBits); 365c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // Also update the base and offset, because the new alignment may 366c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman // not be applicable with the old ones. 367c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman V = MMO->getValue(); 368c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Offset = MMO->getOffset(); 369c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 370c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 371c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 3724b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// getAlignment - Return the minimum known alignment in bytes of the 3734b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman/// actual memory reference. 3744b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohmanuint64_t MachineMemOperand::getAlignment() const { 3754b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman return MinAlign(getBaseAlignment(), getOffset()); 3764b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman} 3774b2ebc19288491cb068f268c311d9fef0ec6a29fDan Gohman 378c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanraw_ostream &llvm::operator<<(raw_ostream &OS, const MachineMemOperand &MMO) { 379c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman assert((MMO.isLoad() || MMO.isStore()) && 380cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman "SV has to be a load, store or both."); 381cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 382c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isVolatile()) 383cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "Volatile "; 384cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 385c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isLoad()) 386cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "LD"; 387c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.isStore()) 388cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "ST"; 389c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << MMO.getSize(); 390cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 391cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the address information. 392cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "["; 393c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (!MMO.getValue()) 394cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "<unknown>"; 395cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman else 396c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman WriteAsOperand(OS, MMO.getValue(), /*PrintType=*/false); 397cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 398cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // If the alignment of the memory reference itself differs from the alignment 399cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // of the base pointer, print the base alignment explicitly, next to the base 400cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // pointer. 401c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment()) 402c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getBaseAlignment() << ")"; 403cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 404c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getOffset() != 0) 405c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "+" << MMO.getOffset(); 406cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << "]"; 407cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 408cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman // Print the alignment of the reference. 409c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if (MMO.getBaseAlignment() != MMO.getAlignment() || 410c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MMO.getBaseAlignment() != MMO.getSize()) 411c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << "(align=" << MMO.getAlignment() << ")"; 412cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 413cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman return OS; 414cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman} 415cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman 416ce42e404a26454f4332c2c350c75ad27bbbb16f7Dan Gohman//===----------------------------------------------------------------------===// 417f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner// MachineInstr Implementation 418f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner//===----------------------------------------------------------------------===// 419f73823000e2d5d6e1cf65bdf5a107297e18d35fbChris Lattner 420c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng/// MachineInstr ctor - This constructor creates a dummy MachineInstr with 42167f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng/// TID NULL and no operands. 422c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan ChengMachineInstr::MachineInstr() 423834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(0), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 424a4f2bb08de92ccec21cbb3d0a9518384b0173660Chris Lattner Parent(0) { 4252c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4262c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 4277279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner} 4287279122e668816bed0d4f38d3392bbab0140fad0Chris Lattner 42967f660cb080965ea93ed6d7265a67100f2fe38e4Evan Chengvoid MachineInstr::addImplicitDefUseOperands() { 43067f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitDefs) 431a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpDefs = TID->ImplicitDefs; *ImpDefs; ++ImpDefs) 4328019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpDefs, true, true)); 43367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng if (TID->ImplicitUses) 434a4161ee99478e7f8f9e33481e1c0dc79f0b4bd7dChris Lattner for (const unsigned *ImpUses = TID->ImplicitUses; *ImpUses; ++ImpUses) 4358019f41c0b7fda031d494e3900eada7d4e494772Chris Lattner addOperand(MachineOperand::CreateReg(*ImpUses, false, true)); 436d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 437d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 4380855cadb00c598d4e78c8f1842a9c1b9bf19c667Bob Wilson/// MachineInstr ctor - This constructor creates a MachineInstr and adds the 4390855cadb00c598d4e78c8f1842a9c1b9bf19c667Bob Wilson/// implicit operands. It reserves space for the number of operands specified by 4400855cadb00c598d4e78c8f1842a9c1b9bf19c667Bob Wilson/// the TargetInstrDesc. 441749c6f6b5ed301c84aac562e414486549d7b98ebChris LattnerMachineInstr::MachineInstr(const TargetInstrDesc &tid, bool NoImp) 442834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 443a4f2bb08de92ccec21cbb3d0a9518384b0173660Chris Lattner MemRefs(0), MemRefsEnd(0), Parent(0) { 4441793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson if (!NoImp) 4451793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson NumImplicitOps = TID->getNumImplicitDefs() + TID->getNumImplicitUses(); 446349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 447fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng if (!NoImp) 448fa9457276a2174aaf302240dd32d89900ad021aeEvan Cheng addImplicitDefUseOperands(); 4492c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4502c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 451d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng} 452d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 45306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 45406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(const TargetInstrDesc &tid, const DebugLoc dl, 45506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp) 456834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 457c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 4581793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson if (!NoImp) 4591793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson NumImplicitOps = TID->getNumImplicitDefs() + TID->getNumImplicitUses(); 46006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 46106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen if (!NoImp) 46206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 46306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 46406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 46506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 46606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 46706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - Work exactly the same as the ctor two above, except 46806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// that the MachineInstr is created and added to the end of the specified 46906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// basic block. 47006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const TargetInstrDesc &tid) 471834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), 472a4f2bb08de92ccec21cbb3d0a9518384b0173660Chris Lattner MemRefs(0), MemRefsEnd(0), Parent(0) { 47306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen assert(MBB && "Cannot use inserting ctor with null basic block!"); 4741793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson NumImplicitOps = TID->getNumImplicitDefs() + TID->getNumImplicitUses(); 47506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen Operands.reserve(NumImplicitOps + TID->getNumOperands()); 47606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen addImplicitDefUseOperands(); 47706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // Make sure that we get added to a machine basicblock 47806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen LeakDetector::addGarbageObject(this); 47906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen MBB->push_back(this); // Add instruction to end of basic block! 48006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen} 48106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 48206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen/// MachineInstr ctor - As above, but with a DebugLoc. 483ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner/// 48406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale JohannesenMachineInstr::MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 485749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &tid) 486834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&tid), NumImplicitOps(0), AsmPrinterFlags(0), MemRefs(0), MemRefsEnd(0), 487c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(dl) { 488ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner assert(MBB && "Cannot use inserting ctor with null basic block!"); 4891793ab9e70c48146a5f1592b84b2b93e38c67fa4Bob Wilson NumImplicitOps = TID->getNumImplicitDefs() + TID->getNumImplicitUses(); 490349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner Operands.reserve(NumImplicitOps + TID->getNumOperands()); 49167f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng addImplicitDefUseOperands(); 4922c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman // Make sure that we get added to a machine basicblock 4932c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::addGarbageObject(this); 494ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner MBB->push_back(this); // Add instruction to end of basic block! 495ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner} 496ddd7fcb887be752ec8167276a697994ad9cb9c4eChris Lattner 497ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// MachineInstr ctor - Copies MachineInstr arg exactly 498ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman/// 4991ed9922794cda9dbe295e74674b909287e544632Evan ChengMachineInstr::MachineInstr(MachineFunction &MF, const MachineInstr &MI) 500834651c94535bfb054449e6c01d5c77ab7a117d3Dan Gohman : TID(&MI.getDesc()), NumImplicitOps(0), AsmPrinterFlags(0), 501c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs(MI.MemRefs), MemRefsEnd(MI.MemRefsEnd), 502c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman Parent(0), debugLoc(MI.getDebugLoc()) { 503943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner Operands.reserve(MI.getNumOperands()); 504b5159ed0cb7943e5938782f7693beb18342165ceTanya Lattner 505ce22e76996d3ff0930716fa60c29df60a7e0481bMisha Brukman // Add operands 5061ed9922794cda9dbe295e74674b909287e544632Evan Cheng for (unsigned i = 0; i != MI.getNumOperands(); ++i) 5071ed9922794cda9dbe295e74674b909287e544632Evan Cheng addOperand(MI.getOperand(i)); 5081ed9922794cda9dbe295e74674b909287e544632Evan Cheng NumImplicitOps = MI.NumImplicitOps; 5090c63e03e04d3982e1913479bba404c3debc9a27eTanya Lattner 5108e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // Set parent to null. 511f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner Parent = 0; 5126116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman 5136116a73da420d9b414a34ce2599dc7f6476e23fcDan Gohman LeakDetector::addGarbageObject(this); 514466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner} 515466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 516ce22e76996d3ff0930716fa60c29df60a7e0481bMisha BrukmanMachineInstr::~MachineInstr() { 5172c3f7ae3843bdc9dcfe85393e178211976c1f9bdDan Gohman LeakDetector::removeGarbageObject(this); 518e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#ifndef NDEBUG 51962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 520e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner assert(Operands[i].ParentMI == this && "ParentMI mismatch!"); 521d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert((!Operands[i].isReg() || !Operands[i].isOnRegUseList()) && 52262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Reg operand def/use list corrupted"); 52362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 524e12d6abfdfc5141b2001f0c369a0e1525315b9c0Chris Lattner#endif 525aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos} 526aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 52762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// getRegInfo - If this instruction is embedded into a MachineFunction, 52862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return the MachineRegisterInfo object for the current function, otherwise 52962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// return null. 53062ed6b9ade63bf01717ce5274fa11e93e873d245Chris LattnerMachineRegisterInfo *MachineInstr::getRegInfo() { 53162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (MachineBasicBlock *MBB = getParent()) 5324e526b9a5b36d9bac170c03df0a5d6fb76740ae2Dan Gohman return &MBB->getParent()->getRegInfo(); 53362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return 0; 53462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 53562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 53662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 53762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 53862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands already be on their use lists. 53962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveRegOperandsFromUseLists() { 54062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 541d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 54262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 54362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 54462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 54562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 54662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// AddRegOperandsToUseLists - Add all of the register operands in 54762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// this instruction from their respective use lists. This requires that the 54862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// operands not be on their use lists yet. 54962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::AddRegOperandsToUseLists(MachineRegisterInfo &RegInfo) { 55062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = 0, e = Operands.size(); i != e; ++i) { 551d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 55262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(&RegInfo); 55362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 55462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 55562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 55762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// addOperand - Add the specified operand to the instruction. If it is an 55862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// implicit operand, it is added to the end of the operand list. If it is 55962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// an explicit operand it is added at the end of the explicit operand list 56062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// (before the first implicit operand). 56162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::addOperand(const MachineOperand &Op) { 562d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman bool isImpReg = Op.isReg() && Op.isImplicit(); 56362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert((isImpReg || !OperandsComplete()) && 56462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner "Trying to add an operand to a machine instr that is already done!"); 56562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 566bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman MachineRegisterInfo *RegInfo = getRegInfo(); 567bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman 56862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If we are adding the operand to the end of the list, our job is simpler. 56962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // This is true most of the time, so this is a reasonable optimization. 57062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (isImpReg || NumImplicitOps == 0) { 57162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // We can only do this optimization if we know that the operand list won't 57262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocate. 57362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (Operands.empty() || Operands.size()+1 <= Operands.capacity()) { 57462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.push_back(Op); 57562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Set the parent of the operand. 57762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().ParentMI = this; 57862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 57962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If the operand is a register, update the operand's use list. 58006801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Op.isReg()) { 581bcf28c08b3f0a3c4aa1be8f1485f6452d9a2b690Dan Gohman Operands.back().AddRegOperandToRegInfo(RegInfo); 58206801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 58306801722a43c697eff0acee905de6b50257ce19bJim Grosbach unsigned OpNo = Operands.size() - 1; 58406801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 58506801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 58606801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 58762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 58862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 58962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 59062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to insert a real operand before any implicit ones. 59262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner unsigned OpNo = Operands.size()-NumImplicitOps; 59362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 59462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If this instruction isn't embedded into a function, then we don't need to 59562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update any operand lists. 59662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo == 0) { 59762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Simple insertion, no reginfo update needed for other register operands. 59862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 59962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 60062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 60162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Do explicitly set the reginfo for this operand though, to ensure the 60262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // next/prev fields are properly nulled out. 60306801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg()) { 60462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(0); 60506801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 60606801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 60706801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 60806801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 60962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else if (Operands.size()+1 <= Operands.capacity()) { 61162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we have to remove register operands from their register use 61262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, add the operand, then add the register operands back to their use 61362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list. This also must handle the case when the operand list reallocates 61462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // to somewhere else. 61562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 61662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If insertion of this operand won't cause reallocation of the operand 61762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // list, just remove the implicit operands, add the operand, then re-add all 61862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // the rest of the operands. 61962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 620d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 62162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 62262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 62362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Add the operand. If it is a register, add it to the reg list. 62562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 62662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 62762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 62806801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg()) { 62962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].AddRegOperandToRegInfo(RegInfo); 63006801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 63106801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 63206801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 63306801722a43c697eff0acee905de6b50257ce19bJim Grosbach } 63462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 63562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the implicit ops. 63662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo+1, e = Operands.size(); i != e; ++i) { 637d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman assert(Operands[i].isReg() && "Should only be an implicit reg!"); 63862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 63962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 64062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } else { 64162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we will be reallocating the operand list. Remove all reg 64262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // operands from their list, then readd them after the operand list is 64362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // reallocated. 64462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner RemoveRegOperandsFromUseLists(); 64562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.insert(Operands.begin()+OpNo, Op); 64762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[OpNo].ParentMI = this; 64862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 64962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Re-add all the operands. 65062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner AddRegOperandsToUseLists(*RegInfo); 65106801722a43c697eff0acee905de6b50257ce19bJim Grosbach 65206801722a43c697eff0acee905de6b50257ce19bJim Grosbach // If the register operand is flagged as early, mark the operand as such 65306801722a43c697eff0acee905de6b50257ce19bJim Grosbach if (Operands[OpNo].isReg() 65406801722a43c697eff0acee905de6b50257ce19bJim Grosbach && TID->getOperandConstraint(OpNo, TOI::EARLY_CLOBBER) != -1) 65506801722a43c697eff0acee905de6b50257ce19bJim Grosbach Operands[OpNo].setIsEarlyClobber(true); 65662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 65762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 65862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 65962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// RemoveOperand - Erase an operand from an instruction, leaving it with one 66062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// fewer operand than it started with. 66162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner/// 66262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattnervoid MachineInstr::RemoveOperand(unsigned OpNo) { 66362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner assert(OpNo < Operands.size() && "Invalid operand number"); 66462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 66562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Special case removing the last one. 66662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (OpNo == Operands.size()-1) { 66762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // If needed, remove from the reg def/use list. 668d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands.back().isReg() && Operands.back().isOnRegUseList()) 66962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.back().RemoveRegOperandFromRegInfo(); 67062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.pop_back(); 67262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner return; 67362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 67462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 67562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Otherwise, we are removing an interior operand. If we have reginfo to 67662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // update, remove all operands that will be shifted down from their reg lists, 67762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // move everything down, then re-add them. 67862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *RegInfo = getRegInfo(); 67962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 68062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 681d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 68262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].RemoveRegOperandFromRegInfo(); 68362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 68462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 68562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 68662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands.erase(Operands.begin()+OpNo); 68762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 68862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner if (RegInfo) { 68962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner for (unsigned i = OpNo, e = Operands.size(); i != e; ++i) { 690d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (Operands[i].isReg()) 69162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner Operands[i].AddRegOperandToRegInfo(RegInfo); 69262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 69362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner } 69462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner} 69562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 696c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// addMemOperand - Add a MachineMemOperand to the machine instruction. 697c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// This function should be used only occasionally. The setMemRefs function 698c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman/// is the primary method for setting up a MachineInstr's MemRefs list. 6998e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::addMemOperand(MachineFunction &MF, 700c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MachineMemOperand *MO) { 701c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefs = MemRefs; 702c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator OldMemRefsEnd = MemRefsEnd; 7038e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 704c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman size_t NewNum = (MemRefsEnd - MemRefs) + 1; 705c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefs = MF.allocateMemRefsArray(NewNum); 706c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator NewMemRefsEnd = NewMemRefs + NewNum; 7078e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 708c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman std::copy(OldMemRefs, OldMemRefsEnd, NewMemRefs); 709c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman NewMemRefs[NewNum - 1] = MO; 710c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 711c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 712c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefsEnd = NewMemRefsEnd; 713c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman} 71462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 715506049f29f4f202a8e45feb916cc0264440a7f6dEvan Chengbool MachineInstr::isIdenticalTo(const MachineInstr *Other, 716506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng MICheckType Check) const { 71734cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // If opcodes or number of operands are not the same then the two 71834cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // instructions are obviously not identical. 71934cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng if (Other->getOpcode() != getOpcode() || 72034cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng Other->getNumOperands() != getNumOperands()) 72134cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng return false; 72234cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng 72334cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // Check operands to make sure they match. 72434cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 72534cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng const MachineOperand &MO = getOperand(i); 72634cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng const MachineOperand &OMO = Other->getOperand(i); 72734cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // Clients may or may not want to ignore defs when testing for equality. 72834cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // For example, machine CSE pass only cares about finding common 72934cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // subexpressions, so it's safe to ignore virtual register defs. 73034cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng if (Check != CheckDefs && MO.isReg() && MO.isDef()) { 73134cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng if (Check == IgnoreDefs) 73234cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng continue; 73334cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng // Check == IgnoreVRegDefs 73434cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng if (TargetRegisterInfo::isPhysicalRegister(MO.getReg()) || 73534cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng TargetRegisterInfo::isPhysicalRegister(OMO.getReg())) 73634cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng if (MO.getReg() != OMO.getReg()) 73734cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng return false; 73834cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng } else if (!MO.isIdenticalTo(OMO)) 739506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng return false; 74034cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng } 74134cdf6edf55d22832dee34fe6a39f1e10691ab51Evan Cheng return true; 742506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng} 743506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng 74448d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// removeFromParent - This method unlinks 'this' from the containing basic 74548d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner/// block, and returns it, but does not delete it. 74648d7c069c76882475c23de153bda9483cd3c9bb4Chris LattnerMachineInstr *MachineInstr::removeFromParent() { 74748d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner assert(getParent() && "Not embedded in a basic block!"); 74848d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner getParent()->remove(this); 74948d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner return this; 75048d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner} 75148d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 75248d7c069c76882475c23de153bda9483cd3c9bb4Chris Lattner 7538e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// eraseFromParent - This method unlinks 'this' from the containing basic 7548e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman/// block, and deletes it. 7558e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanvoid MachineInstr::eraseFromParent() { 7568e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman assert(getParent() && "Not embedded in a basic block!"); 7578e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman getParent()->erase(this); 7588e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman} 7598e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 7608e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 76121326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// OperandComplete - Return true if it's illegal to add a new operand 76221326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaeke/// 7632a90ba60175f93e7438165d8423100aa573c16c5Chris Lattnerbool MachineInstr::OperandsComplete() const { 764349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned short NumOperands = TID->getNumOperands(); 7658f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic() && getNumOperands()-NumImplicitOps >= NumOperands) 7663497782f3843007de3be0c43e3ff206a01e2ccacVikram S. Adve return true; // Broken: we have all the operands of this instruction! 767413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner return false; 76870bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve} 76970bc4b5d1a3795a8f41be96723cfcbccac8e1671Vikram S. Adve 77019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// getNumExplicitOperands - Returns the number of non-implicit operands. 77119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// 77219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengunsigned MachineInstr::getNumExplicitOperands() const { 773349c4952009525b27383e2120a6b3c998f39bd09Chris Lattner unsigned NumOperands = TID->getNumOperands(); 7748f707e15fbd09ca948b86419bcb0c92470827ac9Chris Lattner if (!TID->isVariadic()) 77519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 77619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7779407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman for (unsigned i = NumOperands, e = getNumOperands(); i != e; ++i) { 7789407cd4ede3e2c090b958778d0fdbdac8b2dbec4Dan Gohman const MachineOperand &MO = getOperand(i); 779d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isImplicit()) 78019e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng NumOperands++; 78119e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 78219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng return NumOperands; 78319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 78419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 7858ace2cd034be10c09be51daf08c3dda327f54262Chris Lattner 786faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng/// findRegisterUseOperandIdx() - Returns the MachineOperand that is a use of 787f9ca50e3dce88b2f9e2f2f0cac2d3ed78afda841Jim Grosbach/// the specific register or -1 if it is not found. It further tightens 78876d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng/// the search criteria to a use that kills the register if isKill is true. 7896130f66eaae89f8878590796977678afa8448926Evan Chengint MachineInstr::findRegisterUseOperandIdx(unsigned Reg, bool isKill, 7906130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI) const { 791576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 792f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng const MachineOperand &MO = getOperand(i); 793d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isUse()) 7946130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7956130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 7966130f66eaae89f8878590796977678afa8448926Evan Cheng if (!MOReg) 7976130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 7986130f66eaae89f8878590796977678afa8448926Evan Cheng if (MOReg == Reg || 7996130f66eaae89f8878590796977678afa8448926Evan Cheng (TRI && 8006130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg) && 8016130f66eaae89f8878590796977678afa8448926Evan Cheng TargetRegisterInfo::isPhysicalRegister(Reg) && 8026130f66eaae89f8878590796977678afa8448926Evan Cheng TRI->isSubRegister(MOReg, Reg))) 80376d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng if (!isKill || MO.isKill()) 80432eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return i; 805b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng } 80632eb1f1ca4220d2f24916e587ad7e8574d7d82a1Evan Cheng return -1; 807b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng} 8087ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 80918b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen/// readsWritesVirtualRegister - Return a pair of bools (reads, writes) 81018b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen/// indicating if this instruction reads or writes Reg. This also considers 81118b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen/// partial defines. 81218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesenstd::pair<bool,bool> 81318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund OlesenMachineInstr::readsWritesVirtualRegister(unsigned Reg, 81418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen SmallVectorImpl<unsigned> *Ops) const { 81518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool PartDef = false; // Partial redefine. 81618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool FullDef = false; // Full define. 81718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool Use = false; 8187ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 8197ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 8207ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen const MachineOperand &MO = getOperand(i); 8217ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen if (!MO.isReg() || MO.getReg() != Reg) 8227ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen continue; 82318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen if (Ops) 82418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen Ops->push_back(i); 8257ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen if (MO.isUse()) 82618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen Use |= !MO.isUndef(); 82718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen else if (MO.getSubReg()) 8287ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen PartDef = true; 8297ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen else 8307ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen FullDef = true; 8317ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen } 83218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen // A partial redefine uses Reg unless there is also a full define. 83318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen return std::make_pair(Use || (PartDef && !FullDef), PartDef || FullDef); 8347ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen} 8357ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 8366130f66eaae89f8878590796977678afa8448926Evan Cheng/// findRegisterDefOperandIdx() - Returns the operand index that is a def of 837703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// the specified register or -1 if it is not found. If isDead is true, defs 838703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// that are not dead are skipped. If TargetRegisterInfo is non-null, then it 839703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman/// also checks if there is a def of a super-register. 8401015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Chengint 8411015ba7018c87f48cc7bb45a564eb4a27241e76aEvan ChengMachineInstr::findRegisterDefOperandIdx(unsigned Reg, bool isDead, bool Overlap, 8421015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng const TargetRegisterInfo *TRI) const { 8431015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool isPhys = TargetRegisterInfo::isPhysicalRegister(Reg); 844b371f457b0ea4a652a9f526ba4375c80ae542252Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 8456130f66eaae89f8878590796977678afa8448926Evan Cheng const MachineOperand &MO = getOperand(i); 846d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 8476130f66eaae89f8878590796977678afa8448926Evan Cheng continue; 8486130f66eaae89f8878590796977678afa8448926Evan Cheng unsigned MOReg = MO.getReg(); 8491015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool Found = (MOReg == Reg); 8501015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng if (!Found && TRI && isPhys && 8511015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng TargetRegisterInfo::isPhysicalRegister(MOReg)) { 8521015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng if (Overlap) 8531015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng Found = TRI->regsOverlap(MOReg, Reg); 8541015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng else 8551015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng Found = TRI->isSubRegister(MOReg, Reg); 8561015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng } 8571015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng if (Found && (!isDead || MO.isDead())) 8581015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return i; 859576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 8606130f66eaae89f8878590796977678afa8448926Evan Cheng return -1; 861576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 86219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 863f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// findFirstPredOperandIdx() - Find the index of the first operand in the 864f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// operand list that is used to represent the predicate. It returns -1 if 865f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng/// none is found. 866f277ee4be7edabb759a7f78138b693d72d0c263fEvan Chengint MachineInstr::findFirstPredOperandIdx() const { 867749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 868749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.isPredicable()) { 86919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) 870749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner if (TID.OpInfo[i].isPredicate()) 871f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return i; 87219e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 87319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 874f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng return -1; 87519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 876576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 877d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// isRegTiedToUseOperand - Given the index of a register def operand, 878d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// check if the register def is tied to a source operand, due to either 879d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// two-address elimination or inline assembly constraints. Returns the 880d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson/// first tied use operand index by reference is UseOpIdx is not null. 881ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 882ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx) const { 883518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner if (isInlineAsm()) { 884d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(DefOpIdx >= 2); 885d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson const MachineOperand &MO = getOperand(DefOpIdx); 886c30aa7b3de0ce8c37e9630e8e7a73cb83c808c62Chris Lattner if (!MO.isReg() || !MO.isDef() || MO.getReg() == 0) 887fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 888ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng // Determine the actual operand index that corresponds to this index. 889fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo = 0; 890ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned DefPart = 0; 891fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng for (unsigned i = 1, e = getNumOperands(); i < e; ) { 892fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 89345d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 89445d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!FMO.isImm()) 89545d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 896fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 897ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned NumOps = InlineAsm::getNumOperandRegisters(FMO.getImm()); 898ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng unsigned PrevDef = i + 1; 899ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng i = PrevDef + NumOps; 900ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (i > DefOpIdx) { 901ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng DefPart = DefOpIdx - PrevDef; 902fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng break; 903ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 904fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng ++DefNo; 905fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 906ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { 907fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(i); 908fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!FMO.isImm()) 909fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 910fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (i+1 >= e || !getOperand(i+1).isReg() || !getOperand(i+1).isUse()) 911fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng continue; 912fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned Idx; 913ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng if (InlineAsm::isUseOperandTiedToDef(FMO.getImm(), Idx) && 914d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson Idx == DefNo) { 915d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 916ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *UseOpIdx = (unsigned)i + 1 + DefPart; 917fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 918d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 919fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 920ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 921fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 922fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 923d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson assert(getOperand(DefOpIdx).isDef() && "DefOpIdx is not a def!"); 924749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = getDesc(); 925ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng for (unsigned i = 0, e = TID.getNumOperands(); i != e; ++i) { 926ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng const MachineOperand &MO = getOperand(i); 9272ce7f2068f13566f5a70ee779e3bb83a6cb8d942Dan Gohman if (MO.isReg() && MO.isUse() && 928d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson TID.getOperandConstraint(i, TOI::TIED_TO) == (int)DefOpIdx) { 929d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson if (UseOpIdx) 930d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson *UseOpIdx = (unsigned)i; 931ef0732d25a9882c947984ae3f2afbef5463ba00fEvan Cheng return true; 932d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson } 93332dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng } 93432dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng return false; 93532dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng} 93632dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 937a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// isRegTiedToDefOperand - Return true if the operand of the specified index 938a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// is a register use and it is tied to an def operand. It also returns the def 939a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng/// operand index by reference. 940ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund Olesenbool MachineInstr:: 941ce9be2cf5dc84865f6b819bd3f9be16944426268Jakob Stoklund OlesenisRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx) const { 942518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner if (isInlineAsm()) { 943fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 9440c8382ce9a96e36325b17d242fd1af16564d8a85Chris Lattner if (!MO.isReg() || !MO.isUse() || MO.getReg() == 0) 945fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 94657e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen 94757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen // Find the flag operand corresponding to UseOpIdx 94857e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen unsigned FlagIdx, NumOps=0; 94957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen for (FlagIdx = 1; FlagIdx < UseOpIdx; FlagIdx += NumOps+1) { 95057e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 95145d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen // After the normal asm operands there may be additional imp-def regs. 95245d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen if (!UFMO.isImm()) 95345d34fe35846eed7019bdc2f7814025302849e0cJakob Stoklund Olesen return false; 95457e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen NumOps = InlineAsm::getNumOperandRegisters(UFMO.getImm()); 95557e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen assert(NumOps < getNumOperands() && "Invalid inline asm flag"); 95657e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (UseOpIdx < FlagIdx+NumOps+1) 95757e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen break; 958ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng } 95957e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen if (FlagIdx >= UseOpIdx) 960ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng return false; 96157e599a46b7b1321f9af02d1cecb4fa6b34f8a52Jakob Stoklund Olesen const MachineOperand &UFMO = getOperand(FlagIdx); 962fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefNo; 963fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (InlineAsm::isUseOperandTiedToDef(UFMO.getImm(), DefNo)) { 964fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng if (!DefOpIdx) 965fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 966fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 967fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng unsigned DefIdx = 1; 968fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Remember to adjust the index. First operand is asm string, then there 969fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // is a flag for each. 970fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng while (DefNo) { 971fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng const MachineOperand &FMO = getOperand(DefIdx); 972fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng assert(FMO.isImm()); 973fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng // Skip over this def. 974fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng DefIdx += InlineAsm::getNumOperandRegisters(FMO.getImm()) + 1; 975fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng --DefNo; 976fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 977ef5d070bbe55d7165fc84778ca7757c3cfeea491Evan Cheng *DefOpIdx = DefIdx + UseOpIdx - FlagIdx; 978fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return true; 979fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 980fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng return false; 981fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng } 982fb11288109329cb736d9f49769581a0d0c23fe19Evan Cheng 983a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const TargetInstrDesc &TID = getDesc(); 984a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (UseOpIdx >= TID.getNumOperands()) 985a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 986a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng const MachineOperand &MO = getOperand(UseOpIdx); 987a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (!MO.isReg() || !MO.isUse()) 988a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 989a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng int DefIdx = TID.getOperandConstraint(UseOpIdx, TOI::TIED_TO); 990a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefIdx == -1) 991a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return false; 992a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng if (DefOpIdx) 993a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng *DefOpIdx = (unsigned)DefIdx; 994a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng return true; 995a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng} 996a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 997e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman/// clearKillInfo - Clears kill flags on all operands. 998e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman/// 999e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohmanvoid MachineInstr::clearKillInfo() { 1000e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1001e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman MachineOperand &MO = getOperand(i); 1002e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman if (MO.isReg() && MO.isUse()) 1003e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman MO.setIsKill(false); 1004e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman } 1005e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman} 1006e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman 1007576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// copyKillDeadInfo - Copies kill / dead operand properties from MI. 1008576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng/// 1009576d123e130a8291669dd2384a3735cc4933fd00Evan Chengvoid MachineInstr::copyKillDeadInfo(const MachineInstr *MI) { 1010576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 1011576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng const MachineOperand &MO = MI->getOperand(i); 1012d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || (!MO.isKill() && !MO.isDead())) 1013576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 1014576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng for (unsigned j = 0, ee = getNumOperands(); j != ee; ++j) { 1015576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MachineOperand &MOp = getOperand(j); 1016576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (!MOp.isIdenticalTo(MO)) 1017576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng continue; 1018576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng if (MO.isKill()) 1019576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsKill(); 1020576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng else 1021576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng MOp.setIsDead(); 1022576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng break; 1023576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 1024576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng } 1025576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng} 1026576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng 102719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng/// copyPredicates - Copies predicate operand(s) from MI. 102819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Chengvoid MachineInstr::copyPredicates(const MachineInstr *MI) { 1029749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner const TargetInstrDesc &TID = MI->getDesc(); 1030b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (!TID.isPredicable()) 1031b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return; 1032b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 1033b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID.OpInfo[i].isPredicate()) { 1034b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Predicated operands must be last operands. 1035b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng addOperand(MI->getOperand(i)); 103619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 103719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng } 103819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng} 103919e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 10409edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesenvoid MachineInstr::substituteRegister(unsigned FromReg, 10419edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen unsigned ToReg, 10429edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen unsigned SubIdx, 10439edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen const TargetRegisterInfo &RegInfo) { 10449edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen if (TargetRegisterInfo::isPhysicalRegister(ToReg)) { 10459edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen if (SubIdx) 10469edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen ToReg = RegInfo.getSubReg(ToReg, SubIdx); 10479edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 10489edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen MachineOperand &MO = getOperand(i); 10499edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen if (!MO.isReg() || MO.getReg() != FromReg) 10509edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen continue; 10519edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen MO.substPhysReg(ToReg, RegInfo); 10529edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen } 10539edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen } else { 10549edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 10559edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen MachineOperand &MO = getOperand(i); 10569edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen if (!MO.isReg() || MO.getReg() != FromReg) 10579edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen continue; 10589edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen MO.substVirtReg(ToReg, SubIdx, RegInfo); 10599edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen } 10609edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen } 10619edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen} 10629edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen 10639f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// isSafeToMove - Return true if it is safe to move this instruction. If 10649f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// SawStore is set to true, it means that there is a store (or call) between 10659f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng/// the instruction's location and its intended destination. 1066b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToMove(const TargetInstrInfo *TII, 1067ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng AliasAnalysis *AA, 1068ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool &SawStore) const { 1069b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Ignore stuff that we obviously can't move. 1070b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng if (TID->mayStore() || TID->isCall()) { 1071b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng SawStore = true; 1072b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 1073b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng } 1074237dee125997dcaf16e391878465162cc680c0faDan Gohman if (TID->isTerminator() || TID->hasUnmodeledSideEffects()) 1075b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return false; 1076b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 1077b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // See if this instruction does a load. If so, we have to guarantee that the 1078b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // loaded value doesn't change between the load and the its intended 1079b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // destination. The check for isInvariantLoad gives the targe the chance to 1080b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // classify the load as always returning a constant, e.g. a constant pool 1081b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // load. 1082a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (TID->mayLoad() && !isInvariantLoad(AA)) 1083b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng // Otherwise, this is a real load. If there is a store between the load and 10847cc2c406d0c82bcf329048ced643ec77fcae60e6Evan Cheng // end of block, or if the load is volatile, we can't move it. 1085d790a5ceee7138d8a5352432ccf862a42e3f5819Dan Gohman return !SawStore && !hasVolatileMemoryRef(); 10863e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1087b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng return true; 1088b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng} 1089b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 1090df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// isSafeToReMat - Return true if it's safe to rematerialize the specified 1091df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng/// instruction which defined the specified register instead of copying it. 1092b3b930a011554fc7566dd4311af3862b01e5fd8fDan Gohmanbool MachineInstr::isSafeToReMat(const TargetInstrInfo *TII, 1093ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng AliasAnalysis *AA, 1094ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng unsigned DstReg) const { 1095df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng bool SawStore = false; 1096a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman if (!TII->isTriviallyReMaterializable(this, AA) || 1097ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng !isSafeToMove(TII, AA, SawStore)) 1098df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1099df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1100cbad42cfd1cc93a41ff26ea2e8895bfbc09f54f2Dan Gohman const MachineOperand &MO = getOperand(i); 1101d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg()) 1102df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng continue; 1103df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // FIXME: For now, do not remat any instruction with register operands. 1104df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // Later on, we can loosen the restriction is the register operands have 1105df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // not been modified between the def and use. Note, this is different from 11068763c1c54413c9cd0b56e2860edb5856151a69fcEvan Cheng // MachineSink because the code is no longer in two-address form (at least 1107df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng // partially). 1108df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng if (MO.isUse()) 1109df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1110df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng else if (!MO.isDead() && MO.getReg() != DstReg) 1111df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return false; 1112df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng } 1113df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng return true; 1114df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng} 1115df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 11163e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// hasVolatileMemoryRef - Return true if this instruction may have a 11173e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// volatile memory reference, or if the information describing the 11183e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// memory reference is not available. Return false if it is known to 11193e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman/// have no volatile memory references. 11203e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohmanbool MachineInstr::hasVolatileMemoryRef() const { 11213e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // An instruction known never to access memory won't have a volatile access. 11223e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (!TID->mayStore() && 11233e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->mayLoad() && 11243e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->isCall() && 11253e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman !TID->hasUnmodeledSideEffects()) 11263e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 11273e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 11283e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Otherwise, if the instruction has no memory reference information, 11293e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // conservatively assume it wasn't preserved. 11303e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman if (memoperands_empty()) 11313e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 11323e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 11333e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman // Check the memory reference information for volatile references. 1134c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator I = memoperands_begin(), E = memoperands_end(); I != E; ++I) 1135c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman if ((*I)->isVolatile()) 11363e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return true; 11373e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 11383e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman return false; 11393e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman} 11403e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1141e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// isInvariantLoad - Return true if this instruction is loading from a 1142e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// location whose value is invariant across the function. For example, 1143f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman/// loading a value from the constant pool or from the argument area 1144e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// of a function if it does not change. This should only return true of 1145e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman/// *all* loads the instruction does are invariant (if it does multiple loads). 1146e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanbool MachineInstr::isInvariantLoad(AliasAnalysis *AA) const { 1147e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction doesn't load at all, it isn't an invariant load. 1148e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (!TID->mayLoad()) 1149e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1150e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1151e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If the instruction has lost its memoperands, conservatively assume that 1152e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // it may not be an invariant load. 1153e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (memoperands_empty()) 1154e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1155e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1156e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman const MachineFrameInfo *MFI = getParent()->getParent()->getFrameInfo(); 1157e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1158e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman for (mmo_iterator I = memoperands_begin(), 1159e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman E = memoperands_end(); I != E; ++I) { 1160e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isVolatile()) return false; 1161e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if ((*I)->isStore()) return false; 1162e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1163e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const Value *V = (*I)->getValue()) { 1164e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // A load from a constant PseudoSourceValue is invariant. 1165e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (const PseudoSourceValue *PSV = dyn_cast<PseudoSourceValue>(V)) 1166e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (PSV->isConstant(MFI)) 1167e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1168e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // If we have an AliasAnalysis, ask it whether the memory is constant. 1169e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman if (AA && AA->pointsToConstantMemory(V)) 1170e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman continue; 1171e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1172e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1173e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Otherwise assume conservatively. 1174e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return false; 1175e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman } 1176e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1177e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman // Everything checks out. 1178e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman return true; 1179e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman} 1180e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1181229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// isConstantValuePHI - If the specified instruction is a PHI that always 1182229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// merges together the same virtual register, return the register, otherwise 1183229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng/// return 0. 1184229694f0ee630ceabe96a8bd48952f6740f928b2Evan Chengunsigned MachineInstr::isConstantValuePHI() const { 1185518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner if (!isPHI()) 1186229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1187d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng assert(getNumOperands() >= 3 && 1188d8f079c25e8bcaf4d10bfa9c3f6a38cd5ac84329Evan Cheng "It's illegal to have a PHI without source operands"); 1189229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 1190229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned Reg = getOperand(1).getReg(); 1191229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng for (unsigned i = 3, e = getNumOperands(); i < e; i += 2) 1192229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng if (getOperand(i).getReg() != Reg) 1193229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return 0; 1194229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng return Reg; 1195229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng} 1196229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 1197a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng/// allDefsAreDead - Return true if all the defs of this instruction are dead. 1198a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng/// 1199a57fabe815ccf016eead526eb3ef475f116ab155Evan Chengbool MachineInstr::allDefsAreDead() const { 1200a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng for (unsigned i = 0, e = getNumOperands(); i < e; ++i) { 1201a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng const MachineOperand &MO = getOperand(i); 1202a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng if (!MO.isReg() || MO.isUse()) 1203a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng continue; 1204a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng if (!MO.isDead()) 1205a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng return false; 1206a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng } 1207a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng return true; 1208a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng} 1209a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng 121021326fc2ad47ee7e73a8c0b03a4a0cc0b0a0c4e8Brian Gaekevoid MachineInstr::dump() const { 12113b325334102144ec39910563eabebde434504564David Greene dbgs() << " " << *this; 12125ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang} 12135ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wang 12145ca6bd14a00ba5310ce1a632d3a0cc8f8af31433Mon P Wangvoid MachineInstr::print(raw_ostream &OS, const TargetMachine *TM) const { 121580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // We can be a bit tidier if we know the TargetMachine and/or MachineFunction. 121680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineFunction *MF = 0; 121780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (const MachineBasicBlock *MBB = getParent()) { 121880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MF = MBB->getParent(); 121980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!TM && MF) 122080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman TM = &MF->getTarget(); 122180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 12220ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 12230ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print explicitly defined operands on the left of an assignment syntax. 122480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned StartOp = 0, e = getNumOperands(); 12250ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman for (; StartOp < e && getOperand(StartOp).isReg() && 12260ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).isDef() && 12270ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman !getOperand(StartOp).isImplicit(); 12280ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman ++StartOp) { 12290ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) OS << ", "; 12300ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman getOperand(StartOp).print(OS, TM); 12316a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner } 1232b140762a45d21aaed054f15adaff0fc2274d939dTanya Lattner 12330ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (StartOp != 0) 12340ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " = "; 12350ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 12360ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the opcode name. 1237749c6f6b5ed301c84aac562e414486549d7b98ebChris Lattner OS << getDesc().getName(); 1238edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 12390ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // Print the rest of the operands. 124080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool OmittedAnyCallClobbers = false; 124180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool FirstOp = true; 12426a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner for (unsigned i = StartOp, e = getNumOperands(); i != e; ++i) { 124380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineOperand &MO = getOperand(i); 124480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 124580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Omit call-clobbered registers which aren't used anywhere. This makes 124680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // call instructions much less noisy on targets where calls clobber lots 124780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // of registers. Don't rely on MO.isDead() because we may be called before 124880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // LiveVariables is run, or we may be looking at a non-allocatable reg. 124980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MF && getDesc().isCall() && 125080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman MO.isReg() && MO.isImplicit() && MO.isDef()) { 125180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned Reg = MO.getReg(); 125280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (Reg != 0 && TargetRegisterInfo::isPhysicalRegister(Reg)) { 125380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman const MachineRegisterInfo &MRI = MF->getRegInfo(); 125480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (MRI.use_empty(Reg) && !MRI.isLiveOut(Reg)) { 125580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman bool HasAliasLive = false; 125680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman for (const unsigned *Alias = TM->getRegisterInfo()->getAliasSet(Reg); 125780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman unsigned AliasReg = *Alias; ++Alias) 125880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!MRI.use_empty(AliasReg) || MRI.isLiveOut(AliasReg)) { 125980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman HasAliasLive = true; 126080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman break; 126180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 126280f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!HasAliasLive) { 126380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OmittedAnyCallClobbers = true; 126480f6c5898113806130975fd56d24929b06bf54f8Dan Gohman continue; 126580f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 126680f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 126780f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 126880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 126980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 127080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (FirstOp) FirstOp = false; else OS << ","; 12716a592271fb2946a0704b06fd66199987cdd40b3cChris Lattner OS << " "; 1272b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (i < getDesc().NumOperands) { 1273b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen const TargetOperandInfo &TOI = getDesc().OpInfo[i]; 1274b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (TOI.isPredicate()) 1275b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen OS << "pred:"; 1276b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen if (TOI.isOptionalDef()) 1277b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen OS << "opt:"; 1278b1bb4afbc7d801f9875be135c428b6f05511db5dJakob Stoklund Olesen } 127959b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng if (isDebugValue() && MO.isMetadata()) { 128059b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng // Pretty print DBG_VALUE instructions. 128159b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng const MDNode *MD = MO.getMetadata(); 128259b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng if (const MDString *MDS = dyn_cast<MDString>(MD->getOperand(2))) 128359b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng OS << "!\"" << MDS->getString() << '\"'; 128459b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng else 128559b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng MO.print(OS, TM); 128659b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng } else 128759b3655564bb6717b296ca9e71f13bf7db45b590Evan Cheng MO.print(OS, TM); 128880f6c5898113806130975fd56d24929b06bf54f8Dan Gohman } 128980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman 129080f6c5898113806130975fd56d24929b06bf54f8Dan Gohman // Briefly indicate whether any call clobbers were omitted. 129180f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (OmittedAnyCallClobbers) { 1292164558e59c2a321bf670e31a7bdde0d38d79bb67Bill Wendling if (!FirstOp) OS << ","; 129380f6c5898113806130975fd56d24929b06bf54f8Dan Gohman OS << " ..."; 12941049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner } 1295edf128a7fa90f2b0b7ee24741a04a7ae1ecd6f7eMisha Brukman 12960ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman bool HaveSemi = false; 12978e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman if (!memoperands_empty()) { 12980ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman if (!HaveSemi) OS << ";"; HaveSemi = true; 12990ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 13000ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman OS << " mem:"; 1301c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman for (mmo_iterator i = memoperands_begin(), e = memoperands_end(); 1302c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman i != e; ++i) { 1303c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman OS << **i; 1304cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman if (next(i) != e) 1305cd26ec5f3c089b3b24f80ff200e94e681eb9e1eeDan Gohman OS << " "; 130669de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 130769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman } 130869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 130980f6c5898113806130975fd56d24929b06bf54f8Dan Gohman if (!debugLoc.isUnknown() && MF) { 1310ad2cf9dd63d15a8bcd7d34a379a1e983fd8c66f7Bill Wendling if (!HaveSemi) OS << ";"; 13110ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 13120ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman // TODO: print InlinedAtLoc information 13130ba90f3e34b826b039bdfece1415ef032c4ad3f5Dan Gohman 1314de4845c163a5847c82d7ce10ed0c320098bce6e0Chris Lattner DIScope Scope(debugLoc.getScope(MF->getFunction()->getContext())); 131575ae593a2750f9f7995980c3a03c0d972985e394Dan Gohman OS << " dbg:"; 13164b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman // Omit the directory, since it's usually long and uninteresting. 13173c91b05d2b1751b9e4e21fd958d358ec463dcd3cDevang Patel if (Scope.Verify()) 13184b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << Scope.getFilename(); 13194b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman else 13204b808b014b0cd25261f93e1885ffdbd0247d8634Dan Gohman OS << "<unknown>"; 1321de4845c163a5847c82d7ce10ed0c320098bce6e0Chris Lattner OS << ':' << debugLoc.getLine(); 1322de4845c163a5847c82d7ce10ed0c320098bce6e0Chris Lattner if (debugLoc.getCol() != 0) 1323de4845c163a5847c82d7ce10ed0c320098bce6e0Chris Lattner OS << ':' << debugLoc.getCol(); 1324b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling } 1325b5ef27375731ece13a8ae0102b3f3233351036afBill Wendling 13261049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner OS << "\n"; 13271049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner} 13281049164aa6b06d91d9b3b557a9a213eaf3f6319aChris Lattner 1329b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterKilled(unsigned IncomingReg, 13306f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1331b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 13329b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 13332ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 13343f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 13359b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 13364a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 13374a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling MachineOperand &MO = getOperand(i); 1338efb8e3e113cbf359d6a838c3b37fedc8305d19bbJakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || MO.isUndef()) 13399b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 13409b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 13419b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (!Reg) 13429b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 13434a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling 13449b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 13453f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 13463f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isKill()) 13473f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked kill. 13483f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 1349ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen if (isPhysReg && isRegTiedToDefOperand(i)) 1350ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen // Two-address uses of physregs must not be marked kill. 1351ece48185168ab130b1777feb86d9e3fe80eb87d2Jakob Stoklund Olesen return true; 13523f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsKill(); 13533f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 13543f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 13553f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isKill() && 13563f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 13579b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // A super-register kill already exists. 13589b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 13592ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 13602ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman if (RegInfo->isSubRegister(IncomingReg, Reg)) 13619b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1362b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1363b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1364b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 13659b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded kill operands. 13669b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 13679b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 13689b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 13699b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 13709b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 13719b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsKill(false); 13729b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 13739b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 13749b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 13754a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling // If not found, this means an alias of one of the operands is killed. Add a 1376b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson // new implicit operand if required. 13773f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found && AddIfNotFound) { 13784a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling addOperand(MachineOperand::CreateReg(IncomingReg, 13794a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling false /*IsDef*/, 13804a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsImp*/, 13814a23d72ec21d1bdfda69fd16c9fc10cec39f1fedBill Wendling true /*IsKill*/)); 1382b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson return true; 1383b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 13843f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return Found; 1385b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 1386b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 1387b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Andersonbool MachineInstr::addRegisterDead(unsigned IncomingReg, 13886f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 1389b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound) { 13909b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng bool isPhysReg = TargetRegisterInfo::isPhysicalRegister(IncomingReg); 139101b2e236b571e7c22ee8493b7ea19eda9830d75cEvan Cheng bool hasAliases = isPhysReg && RegInfo->getAliasSet(IncomingReg); 13923f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman bool Found = false; 13939b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng SmallVector<unsigned,4> DeadOps; 1394b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1395b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson MachineOperand &MO = getOperand(i); 1396d735b8019b0f297d7c14b55adcd887af24d8e602Dan Gohman if (!MO.isReg() || !MO.isDef()) 13979b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng continue; 13989b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned Reg = MO.getReg(); 13993f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Reg) 14003f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman continue; 14013f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman 14029b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (Reg == IncomingReg) { 14033f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (!Found) { 14043f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman if (MO.isDead()) 14053f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // The register is already marked dead. 14063f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman return true; 14073f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman MO.setIsDead(); 14083f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman Found = true; 14093f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } 14103f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman } else if (hasAliases && MO.isDead() && 14113f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman TargetRegisterInfo::isPhysicalRegister(Reg)) { 14129b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // There exists a super-register that's marked dead. 14139b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (RegInfo->isSuperRegister(IncomingReg, Reg)) 14142ebc11ac6d19ec806da97bd4f2d49a27932d09fbDan Gohman return true; 141522ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson if (RegInfo->getSubRegisters(IncomingReg) && 141622ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->getSuperRegisters(Reg) && 141722ae99908258dd5631fde7128a94c418ed08eae5Owen Anderson RegInfo->isSubRegister(IncomingReg, Reg)) 14189b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.push_back(i); 1419b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1420b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson } 1421b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 14229b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng // Trim unneeded dead operands. 14239b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng while (!DeadOps.empty()) { 14249b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng unsigned OpIdx = DeadOps.back(); 14259b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng if (getOperand(OpIdx).isImplicit()) 14269b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng RemoveOperand(OpIdx); 14279b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng else 14289b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng getOperand(OpIdx).setIsDead(false); 14299b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng DeadOps.pop_back(); 14309b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng } 14319b6d7b9fb36b5cf87d291881dfcea399796f7826Evan Cheng 14323f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // If not found, this means an alias of one of the operands is dead. Add a 14333f62940561760fe5dcc8675853be57ee4ac8069aDan Gohman // new implicit operand if required. 143431530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner if (Found || !AddIfNotFound) 143531530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return Found; 143631530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner 143731530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner addOperand(MachineOperand::CreateReg(IncomingReg, 143831530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDef*/, 143931530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsImp*/, 144031530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner false /*IsKill*/, 144131530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner true /*IsDead*/)); 144231530617dd206c3ac549e98508d8f98e91bf8275Chris Lattner return true; 1443b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson} 14448efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 14458efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesenvoid MachineInstr::addRegisterDefined(unsigned IncomingReg, 14468efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen const TargetRegisterInfo *RegInfo) { 144763e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen if (TargetRegisterInfo::isPhysicalRegister(IncomingReg)) { 144863e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen MachineOperand *MO = findRegisterDefOperand(IncomingReg, false, RegInfo); 144963e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen if (MO) 145063e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen return; 145163e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen } else { 145263e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 145363e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen const MachineOperand &MO = getOperand(i); 145463e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen if (MO.isReg() && MO.getReg() == IncomingReg && MO.isDef() && 145563e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen MO.getSubReg() == 0) 145663e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen return; 145763e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen } 145863e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen } 145963e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen addOperand(MachineOperand::CreateReg(IncomingReg, 146063e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen true /*IsDef*/, 146163e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen true /*IsImp*/)); 14628efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen} 146367eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng 1464db4971259ce94cea26e555e9ade82672a3581f5cDan Gohmanvoid MachineInstr::setPhysRegsDeadExcept(const SmallVectorImpl<unsigned> &UsedRegs, 1465db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman const TargetRegisterInfo &TRI) { 1466db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { 1467db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman MachineOperand &MO = getOperand(i); 1468db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman if (!MO.isReg() || !MO.isDef()) continue; 1469db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman unsigned Reg = MO.getReg(); 1470db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman if (Reg == 0) continue; 1471db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman bool Dead = true; 1472db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman for (SmallVectorImpl<unsigned>::const_iterator I = UsedRegs.begin(), 1473db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman E = UsedRegs.end(); I != E; ++I) 1474db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman if (TRI.regsOverlap(*I, Reg)) { 1475db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman Dead = false; 1476db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman break; 1477db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman } 1478db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman // If there are no uses, including partial uses, the def is dead. 1479db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman if (Dead) MO.setIsDead(); 1480db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman } 1481db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman} 1482db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman 148367eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Chengunsigned 148467eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan ChengMachineInstrExpressionTrait::getHashValue(const MachineInstr* const &MI) { 148567eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng unsigned Hash = MI->getOpcode() * 37; 148667eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng for (unsigned i = 0, e = MI->getNumOperands(); i != e; ++i) { 148767eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng const MachineOperand &MO = MI->getOperand(i); 148867eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng uint64_t Key = (uint64_t)MO.getType() << 32; 148967eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng switch (MO.getType()) { 149072aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner default: break; 149172aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_Register: 149272aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner if (MO.isDef() && MO.getReg() && 149372aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner TargetRegisterInfo::isVirtualRegister(MO.getReg())) 149472aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner continue; // Skip virtual register defs. 149572aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= MO.getReg(); 149672aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 149772aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_Immediate: 149872aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= MO.getImm(); 149972aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 150072aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_FrameIndex: 150172aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_ConstantPoolIndex: 150272aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_JumpTableIndex: 150372aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= MO.getIndex(); 150472aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 150572aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_MachineBasicBlock: 150672aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= DenseMapInfo<void*>::getHashValue(MO.getMBB()); 150772aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 150872aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_GlobalAddress: 150972aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= DenseMapInfo<void*>::getHashValue(MO.getGlobal()); 151072aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 151172aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_BlockAddress: 151272aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= DenseMapInfo<void*>::getHashValue(MO.getBlockAddress()); 151372aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 151472aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner case MachineOperand::MO_MCSymbol: 151572aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner Key |= DenseMapInfo<void*>::getHashValue(MO.getMCSymbol()); 151672aaa3c79869870bd16402ed1f37b80a5e71c800Chris Lattner break; 151767eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng } 151867eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key += ~(Key << 32); 151967eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key ^= (Key >> 22); 152067eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key += ~(Key << 13); 152167eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key ^= (Key >> 8); 152267eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key += (Key << 3); 152367eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key ^= (Key >> 15); 152467eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key += ~(Key << 27); 152567eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Key ^= (Key >> 31); 152667eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng Hash = (unsigned)Key + Hash * 37; 152767eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng } 152867eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng return Hash; 152967eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng} 1530