MachineInstr.h revision 36b56886974eae4f9c5ebc96befd3e7bfe5de338
148486893f46d2e12e926682a3ecb908716bc66c4Chris Lattner//===-- llvm/CodeGen/MachineInstr.h - MachineInstr class --------*- C++ -*-===// 2ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 7ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9a730c864227b287cdfad5f5f3d5d0808c9f422bbChris Lattner// 10a730c864227b287cdfad5f5f3d5d0808c9f422bbChris Lattner// This file contains the declaration of the MachineInstr class, which is the 11ef6a6a69ff1e1b709d0acb315b9f6c926c67a778Misha Brukman// basic representation for all target dependent machine instructions used by 12a730c864227b287cdfad5f5f3d5d0808c9f422bbChris Lattner// the back end. 13a730c864227b287cdfad5f5f3d5d0808c9f422bbChris Lattner// 14a730c864227b287cdfad5f5f3d5d0808c9f422bbChris Lattner//===----------------------------------------------------------------------===// 1523ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 1623ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#ifndef LLVM_CODEGEN_MACHINEINSTR_H 1723ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#define LLVM_CODEGEN_MACHINEINSTR_H 1823ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 19a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen#include "llvm/ADT/ArrayRef.h" 20255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/ADT/DenseMapInfo.h" 2184e679beea11ac55ed7871eec4deaccdf393de3eChris Lattner#include "llvm/ADT/STLExtras.h" 22d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen#include "llvm/ADT/StringRef.h" 23255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/ADT/ilist.h" 24255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/ADT/ilist_node.h" 2536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/ADT/iterator_range.h" 26255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/CodeGen/MachineOperand.h" 2736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/IR/DebugLoc.h" 280b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/InlineAsm.h" 29255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/MC/MCInstrDesc.h" 30f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen#include "llvm/Support/ArrayRecycler.h" 31255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/Target/TargetOpcodes.h" 32be583b914d8156b99d3da264d5adca37fee8dbc9John Criswell 33d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 34d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 3518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesentemplate <typename T> class SmallVectorImpl; 36e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanclass AliasAnalysis; 37b27087f5aa574f875598f4a309b7dd687c64a455Evan Chengclass TargetInstrInfo; 38f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesenclass TargetRegisterClass; 396f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohmanclass TargetRegisterInfo; 408e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanclass MachineFunction; 41c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanclass MachineMemOperand; 42c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 43b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 448b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// MachineInstr - Representation of each machine instruction. 458b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// 4684be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// This class isn't a POD type, but it must have a trivial destructor. When a 4784be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// MachineFunction is deleted, all the contained MachineInstrs are deallocated 4884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// without having their destructor called. 4984be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// 50fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineInstr : public ilist_node<MachineInstr> { 51c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanpublic: 52c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman typedef MachineMemOperand **mmo_iterator; 53c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 5445282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// Flags to specify different kinds of comments to output in 5545282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// assembly code. These flags carry semantic information not 5645282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// otherwise easily derivable from the IR text. 5745282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// 5845282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner enum CommentFlag { 5945282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner ReloadReuse = 0x1 6045282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner }; 616dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov enum MIFlag { 637c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng NoFlags = 0, 647c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng FrameSetup = 1 << 0, // Instruction is used as a part of 656dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // function frame setup code. 66fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledPred = 1 << 1, // Instruction has bundled predecessors. 67fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledSucc = 1 << 2 // Instruction has bundled successors. 686dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov }; 69c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanprivate: 70e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc *MCID; // Instruction descriptor. 71f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineBasicBlock *Parent; // Pointer to the owning basic block. 72f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen 73f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen // Operands are allocated by an ArrayRecycler. 74f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineOperand *Operands; // Pointer to the first operand. 75f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned NumOperands; // Number of operands on instruction. 76f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef ArrayRecycler<MachineOperand>::Capacity OperandCapacity; 77f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen OperandCapacity CapOperands; // Capacity of the Operands array. 789a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng 796dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t Flags; // Various bits of additional 806dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // information about machine 816dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // instruction. 826dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 836647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t AsmPrinterFlags; // Various bits of information used by 841251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // the AsmPrinter to emit helpful 851251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // comments. This is *not* semantic 861251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information. Do not use this for 871251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // anything other than to convey comment 881251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information to AsmPrinter. 891251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 90b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen uint8_t NumMemRefs; // Information on memory references. 91861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator MemRefs; 92861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer 9306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen DebugLoc debugLoc; // Source line information. 94c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke 95001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper MachineInstr(const MachineInstr&) LLVM_DELETED_FUNCTION; 96001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper void operator=(const MachineInstr&) LLVM_DELETED_FUNCTION; 9784be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen // Use MachineFunction::DeleteMachineInstr() instead. 9884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen ~MachineInstr() LLVM_DELETED_FUNCTION; 99c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 100c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos // Intrusive list support 101fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineInstr>; 102fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineBasicBlock>; 103f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner void setParent(MachineBasicBlock *P) { Parent = P; } 1048e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1058e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr ctor - This constructor creates a copy of the given 1068e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr in the given MachineFunction. 1078e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman MachineInstr(MachineFunction &, const MachineInstr &); 1088e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 10906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// MachineInstr ctor - This constructor create a MachineInstr and add the 11006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// implicit operands. It reserves space for number of operands specified by 111e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// MCInstrDesc. An explicit DebugLoc is supplied. 1129500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen MachineInstr(MachineFunction&, const MCInstrDesc &MCID, 1139500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen const DebugLoc dl, bool NoImp = false); 11406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1158e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // MachineInstrs are pool-allocated and owned by MachineFunction. 1168e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman friend class MachineFunction; 1178e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1188e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanpublic: 119f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner const MachineBasicBlock* getParent() const { return Parent; } 120f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner MachineBasicBlock* getParent() { return Parent; } 12106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1221251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlags - Return the asm printer flags bitvector. 1231251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 1246647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t getAsmPrinterFlags() const { return AsmPrinterFlags; } 1251251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 126cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// clearAsmPrinterFlags - clear the AsmPrinter bitvector 127cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 128cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner void clearAsmPrinterFlags() { AsmPrinterFlags = 0; } 129108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 1301251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlag - Return whether an AsmPrinter flag is set. 1311251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13245282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner bool getAsmPrinterFlag(CommentFlag Flag) const { 1331251443929a256c833717e1030c368d3b6e4cb7cDavid Greene return AsmPrinterFlags & Flag; 1341251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 1351251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 1361251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// setAsmPrinterFlag - Set a flag for the AsmPrinter. 1371251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13845282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner void setAsmPrinterFlag(CommentFlag Flag) { 1396dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov AsmPrinterFlags |= (uint8_t)Flag; 1406dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1416dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1427c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// clearAsmPrinterFlag - clear specific AsmPrinter flags 1437c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1447c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng void clearAsmPrinterFlag(CommentFlag Flag) { 1457c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng AsmPrinterFlags &= ~Flag; 1467c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 1477c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 1486dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlags - Return the MI flags bitvector. 1496dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t getFlags() const { 1506dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags; 1516dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1526dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1536dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlag - Return whether an MI flag is set. 1546dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov bool getFlag(MIFlag Flag) const { 1556dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags & Flag; 1566dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1576dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1586dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// setFlag - Set a MI flag. 1596dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlag(MIFlag Flag) { 1606dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov Flags |= (uint8_t)Flag; 1616dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlags(unsigned flags) { 164bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen // Filter out the automatically maintained flags. 165bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen unsigned Mask = BundledPred | BundledSucc; 166bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen Flags = (Flags & Mask) | (flags & ~Mask); 1671251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 168108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 169ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// clearFlag - Clear a MI flag. 170ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng void clearFlag(MIFlag Flag) { 171ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng Flags &= ~((uint8_t)Flag); 172ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 173ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 1747c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// isInsideBundle - Return true if MI is in a bundle (but not the first MI 1757c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// in a bundle). 176cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 1777c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// A bundle looks like this before it's finalized: 1787c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1797c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI | 1807c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1817c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1827c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 183b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1847c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1857c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1867c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 187b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1887c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1897c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// In this case, the first MI starts a bundle but is not inside a bundle, the 1907c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// next 2 MIs are considered "inside" the bundle. 1917c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1927c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// After a bundle is finalized, it looks like this: 1937c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1947c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | Bundle | 1957c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1967c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1977c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1987c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI * | 1997c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2007c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2017c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 202b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2037c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2047c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2057c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 206b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2077c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2087c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// The first instruction has the special opcode "BUNDLE". It's not "inside" 2097c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// a bundle, but the next three MIs are. 2107c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng bool isInsideBundle() const { 211fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen return getFlag(BundledPred); 212cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner } 2131251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 21499a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// isBundled - Return true if this instruction part of a bundle. This is true 21599a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// if either itself or its following instruction is marked "InsideBundle". 2162e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen bool isBundled() const { 2172e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen return isBundledWithPred() || isBundledWithSucc(); 2182e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen } 21999a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick 220fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 221fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// first instruction in the bundle. 222fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithPred() const { return getFlag(BundledPred); } 223fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 224fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 225fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// last instruction in the bundle. 226fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithSucc() const { return getFlag(BundledSucc); } 227fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 228fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its predecessor. This can be an unbundled 229fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the first instruction in a bundle. 230fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithPred(); 231fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 232fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its successor. This can be an unbundled 233fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the last instruction in a bundle. 234fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithSucc(); 235fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 236fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle above this instruction. 237fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromPred(); 238fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 239fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle below this instruction. 240fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromSucc(); 241fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 24206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// getDebugLoc - Returns the debug location id of this MachineInstr. 24306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 244d5fb7906130989a579d1bfe4490b414331e94feeChris Lattner DebugLoc getDebugLoc() const { return debugLoc; } 2456dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 246d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// emitError - Emit an error referring to the source location of this 247d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// instruction. This should only be used for inline assembly that is somehow 248d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// impossible to compile. Other errors should have been handled much 249d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// earlier. 250d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 251d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// If this method returns, the caller should try to recover from the error. 252d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 253d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen void emitError(StringRef Msg) const; 254d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen 25569244300b8a0112efb44b6273ecea4ca6264b8cfChris Lattner /// getDesc - Returns the target instruction descriptor of this 25667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// MachineInstr. 257e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc &getDesc() const { return *MCID; } 258ab8672c8bb83e722b856eac67863542ea7e0cbb2Alkis Evlogimenos 259c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke /// getOpcode - Returns the opcode of this MachineInstr. 260cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 261e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng int getOpcode() const { return MCID->Opcode; } 2629f495b54fa94dba4e0be59ba9736c7cf18d996d9Vikram S. Adve 263cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// Access to explicit operands of the instruction. 264cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 265f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned getNumOperands() const { return NumOperands; } 266ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 267572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner const MachineOperand& getOperand(unsigned i) const { 268a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 269943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 270572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 271572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner MachineOperand& getOperand(unsigned i) { 272a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 273943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 274572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 2756d6c3f86186333037f2fd3fb001e8b2998c080d9Chris Lattner 27619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// getNumExplicitOperands - Returns the number of non-implicit operands. 27719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// 27819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng unsigned getNumExplicitOperands() const; 279ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 280ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner /// iterator/begin/end - Iterate over all operands of a machine instruction. 281f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef MachineOperand *mop_iterator; 282f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef const MachineOperand *const_mop_iterator; 283ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 284f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_begin() { return Operands; } 285f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_end() { return Operands + NumOperands; } 286ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 287f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_begin() const { return Operands; } 288f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_end() const { return Operands + NumOperands; } 289ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 29036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines inline iterator_range<mop_iterator> operands() { 29136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mop_iterator>(operands_begin(), operands_end()); 29236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 29336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines inline iterator_range<const_mop_iterator> operands() const { 29436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<const_mop_iterator>(operands_begin(), operands_end()); 29536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 29636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 29769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman /// Access to memory operands of the instruction 298c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator memoperands_begin() const { return MemRefs; } 299861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator memoperands_end() const { return MemRefs + NumMemRefs; } 300861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer bool memoperands_empty() const { return NumMemRefs == 0; } 30169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 30236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines inline iterator_range<mmo_iterator> memoperands() { 30336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mmo_iterator>(memoperands_begin(), memoperands_end()); 30436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 30536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines inline iterator_range<mmo_iterator> memoperands() const { 30636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mmo_iterator>(memoperands_begin(), memoperands_end()); 30736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 30836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 309cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// hasOneMemOperand - Return true if this instruction has exactly one 310cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// MachineMemOperand. 311cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman bool hasOneMemOperand() const { 312861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer return NumMemRefs == 1; 313cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman } 314cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman 3155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// API for querying MachineInstr properties. They are the same as MCInstrDesc 3165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// queries but they are bundle aware. 3175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 31843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng enum QueryType { 31943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng IgnoreBundle, // Ignore bundles 32043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AnyInBundle, // Return true if any instruction in bundle has property 32143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AllInBundle // Return true if all instructions in bundle have property 32243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng }; 32343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng 3245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasProperty - Return true if the instruction (or in the case of a bundle, 3255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the instructions inside the bundle) has the specified property. 3265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The first argument is the property being queried. 3275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The second argument indicates whether the query should look inside 3285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction bundles. 32985f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const { 3304aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // Inline the fast path for unbundled or bundle-internal instructions. 3314aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen if (Type == IgnoreBundle || !isBundled() || isBundledWithPred()) 33285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return getDesc().getFlags() & (1 << MCFlag); 33385f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 3344aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // If this is the first instruction in a bundle, take the slow path. 33585f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return hasPropertyInBundle(1 << MCFlag, Type); 33685f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer } 3375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isVariadic - Return true if this instruction can have a variable number of 3395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands. In this case, the variable operands will be after the normal 3405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands but before the implicit definitions and uses (if any are 3415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// present). 34243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isVariadic(QueryType Type = IgnoreBundle) const { 34343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Variadic, Type); 3445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasOptionalDef - Set if this instruction has an optional definition, e.g. 3475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// ARM instructions which can set condition code if 's' bit is set. 34843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasOptionalDef(QueryType Type = IgnoreBundle) const { 34943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasOptionalDef, Type); 3505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isPseudo - Return true if this is a pseudo instruction that doesn't 3535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// correspond to a real machine instruction. 3547c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 35543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPseudo(QueryType Type = IgnoreBundle) const { 35643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Pseudo, Type); 3575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 35943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isReturn(QueryType Type = AnyInBundle) const { 36043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Return, Type); 3615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 36343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCall(QueryType Type = AnyInBundle) const { 36443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Call, Type); 3655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBarrier - Returns true if the specified instruction stops control flow 3685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// from executing the instruction immediately following it. Examples include 3695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// unconditional branches and return instructions. 37043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBarrier(QueryType Type = AnyInBundle) const { 37143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Barrier, Type); 3725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3737c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isTerminator - Returns true if this instruction part of the terminator for 3755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// a basic block. Typically this is things like return and branch 3765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions. 3775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 3785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Various passes use this to insert code into the bottom of a basic block, 3795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// but before control flow occurs. 38043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isTerminator(QueryType Type = AnyInBundle) const { 38143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Terminator, Type); 3827c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 3837c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBranch - Returns true if this is a conditional, unconditional, or 3855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// indirect branch. Predicates below can be used to discriminate between 3865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// these cases, and the TargetInstrInfo::AnalyzeBranch method can be used to 3875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// get more information. 38843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBranch(QueryType Type = AnyInBundle) const { 38943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Branch, Type); 3905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isIndirectBranch - Return true if this is an indirect branch, such as a 3935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// branch through a register. 39443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isIndirectBranch(QueryType Type = AnyInBundle) const { 39543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::IndirectBranch, Type); 3965a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3975a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConditionalBranch - Return true if this is a branch which may fall 3995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// through to the next instruction or may transfer control flow to some other 4005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// block. The TargetInstrInfo::AnalyzeBranch method can be used to get more 4015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// information about this branch. 40243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConditionalBranch(QueryType Type = AnyInBundle) const { 40343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & !isBarrier(Type) & !isIndirectBranch(Type); 4045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isUnconditionalBranch - Return true if this is a branch which always 4075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transfers control flow to some other block. The 4085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::AnalyzeBranch method can be used to get more information 4095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// about this branch. 41043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isUnconditionalBranch(QueryType Type = AnyInBundle) const { 41143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & isBarrier(Type) & !isIndirectBranch(Type); 4125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 414a370bdb42eaefdb103f971ad2e84c75573d77c68Joey Gouly /// Return true if this instruction has a predicate operand that 415a370bdb42eaefdb103f971ad2e84c75573d77c68Joey Gouly /// controls execution. It may be set to 'always', or may be set to other 4165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// values. There are various methods in TargetInstrInfo that can be used to 4175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// control and modify the predicate in this instruction. 41843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPredicable(QueryType Type = AllInBundle) const { 4195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // If it's a bundle than all bundled instructions must be predicable for this 4205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // to return true. 42143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Predicable, Type); 4225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCompare - Return true if this instruction is a comparison. 42543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCompare(QueryType Type = IgnoreBundle) const { 42643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Compare, Type); 4275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isMoveImmediate - Return true if this instruction is a move immediate 4305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// (including conditional moves) instruction. 43143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isMoveImmediate(QueryType Type = IgnoreBundle) const { 43243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MoveImm, Type); 4335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBitcast - Return true if this instruction is a bitcast instruction. 4365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 43743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBitcast(QueryType Type = IgnoreBundle) const { 43843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Bitcast, Type); 4395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 441f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// isSelect - Return true if this instruction is a select instruction. 442f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// 443f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen bool isSelect(QueryType Type = IgnoreBundle) const { 444f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen return hasProperty(MCID::Select, Type); 445f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen } 446f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen 4475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isNotDuplicable - Return true if this instruction cannot be safely 4485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// duplicated. For example, if the instruction has a unique labels attached 4495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// to it, duplicating it would cause multiple definition errors. 45043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isNotDuplicable(QueryType Type = AnyInBundle) const { 45143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::NotDuplicable, Type); 4525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasDelaySlot - Returns true if the specified instruction has a delay slot 4555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which must be filled by the code generator. 45643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasDelaySlot(QueryType Type = AnyInBundle) const { 45743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::DelaySlot, Type); 4585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// canFoldAsLoad - Return true for instructions that can be folded as 4615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// memory operands in other instructions. The most common use for this 4625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is instructions that are simple loads from memory that don't modify 4635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the loaded value in any way, but it can also be used for instructions 4645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// that can be expressed as constant-pool loads, such as V_SETALLONES 4655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// on x86, to allow them to be folded when it is beneficial. 4665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// This should only be set on instructions that return a value in their 4675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// only virtual register definition. 46843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool canFoldAsLoad(QueryType Type = IgnoreBundle) const { 46943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::FoldableAsLoad, Type); 4705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Side Effect Analysis 4745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayLoad - Return true if this instruction could possibly read memory. 4775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple load 4785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may load a value and modify it, for example. 47943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayLoad(QueryType Type = AnyInBundle) const { 480daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 481daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 482daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayLoad) 483daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 484daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 485daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayLoad, Type); 4865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayStore - Return true if this instruction could possibly modify memory. 4905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple store 4915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may store a modified value based on their operands, or 4925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// may not actually modify anything, for example. 49343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayStore(QueryType Type = AnyInBundle) const { 494daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 495daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 496daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayStore) 497daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 498daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 499daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayStore, Type); 5005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Flags that indicate whether an instruction can be modified by a method. 5045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCommutable - Return true if this may be a 2- or 3-address 5075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (of the form "X = op Y, Z, ..."), which produces the same 5085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// result if Y and Z are exchanged. If this flag is set, then the 5095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::commuteInstruction method may be used to hack on the 5105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction. 5115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Note that this flag may be set on instructions that are only commutable 5135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// sometimes. In these cases, the call to commuteInstruction will fail. 5145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Also note that some instructions require non-trivial modification to 5155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// commute them. 51643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCommutable(QueryType Type = IgnoreBundle) const { 51743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Commutable, Type); 5185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConvertibleTo3Addr - Return true if this is a 2-address instruction 5215a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which can be changed into a 3-address instruction if needed. Doing this 5225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transformation can be profitable in the register allocator, because it 5235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that the instruction can use a 2-address form if possible, but 5245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// degrade into a less efficient form if the source and dest register cannot 5255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// be assigned to the same register. For example, this allows the x86 5265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// backend to turn a "shl reg, 3" instruction into an LEA instruction, which 5275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is the same speed as the shift but has bigger code size. 5285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this returns true, then the target must implement the 5305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::convertToThreeAddress method for this instruction, which 5315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is allowed to fail if the transformation isn't valid for this specific 5325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (e.g. shl reg, 4 on x86). 5335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 53443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConvertibleTo3Addr(QueryType Type = IgnoreBundle) const { 53543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ConvertibleTo3Addr, Type); 5365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// usesCustomInsertionHook - Return true if this instruction requires 5395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// custom insertion support when the DAG scheduler is inserting it into a 5405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// machine basic block. If this is true for the instruction, it basically 5415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that it is a pseudo instruction used at SelectionDAG time that is 5425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// expanded out into magic code by the target when MachineInstrs are formed. 5435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this is true, the TargetLoweringInfo::InsertAtEndOfBasicBlock method 5455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is used to insert this into the MachineBasicBlock. 54643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool usesCustomInsertionHook(QueryType Type = IgnoreBundle) const { 54743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::UsesCustomInserter, Type); 5485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasPostISelHook - Return true if this instruction requires *adjustment* 5515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// after instruction selection by calling a target hook. For example, this 5525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// can be used to fill in ARM 's' optional operand depending on whether 5535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the conditional flag register is used. 55443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasPostISelHook(QueryType Type = IgnoreBundle) const { 55543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasPostISelHook, Type); 5565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isRematerializable - Returns true if this instruction is a candidate for 5595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// remat. This flag is deprecated, please don't use it anymore. If this 5605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// flag is set, the isReallyTriviallyReMaterializable() method is called to 5615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// verify the instruction is really rematable. 56243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isRematerializable(QueryType Type = AllInBundle) const { 5635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // It's only possible to re-mat a bundle if all bundled instructions are 5645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // re-materializable. 56543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Rematerializable, Type); 5665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isAsCheapAsAMove - Returns true if this instruction has the same cost (or 5695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// less) than a move instruction. This is useful during certain types of 5705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// optimizations (e.g., remat during two-address conversion or machine licm) 5715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// where we would like to remat or hoist the instruction, but not if it costs 5725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// more than moving the instruction into the appropriate register. Note, we 5735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// are not marking copies from and to the same register class with this flag. 57443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isAsCheapAsAMove(QueryType Type = AllInBundle) const { 5755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Only returns true for a bundle if all bundled instructions are cheap. 5765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // FIXME: This probably requires a target hook. 57743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::CheapAsAMove, Type); 5785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraSrcRegAllocReq - Returns true if this instruction source operands 5815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::STRD's two source registers must be an 5835a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::STM registers have to be in ascending order. 5845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for sources of instructions with this flag. 58643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraSrcRegAllocReq(QueryType Type = AnyInBundle) const { 58743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraSrcRegAllocReq, Type); 5885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraDefRegAllocReq - Returns true if this instruction def operands 5915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::LDRD's two def registers must be an 5935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::LDM registers have to be in ascending order. 5945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for definitions of instructions with this flag. 59643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraDefRegAllocReq(QueryType Type = AnyInBundle) const { 59743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraDefRegAllocReq, Type); 5985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 6005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 601506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng enum MICheckType { 602506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng CheckDefs, // Check all operands for equality 603cbc988be22bc9411d95215c8b7251b5f85710674Evan Cheng CheckKillDead, // Check all operands including kill / dead markers 604506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreDefs, // Ignore all definitions 605506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreVRegDefs // Ignore virtual register definitions 606506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng }; 607506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng 608fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// isIdenticalTo - Return true if this instruction is identical to (same 609fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// opcode and same operands as) the specified instruction. 610506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng bool isIdenticalTo(const MachineInstr *Other, 611506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng MICheckType Check = CheckDefs) const; 612a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve 6139f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block, and return it without 6149f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6159f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6169f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used on bundled instructions, use 6179f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// removeFromBundle() to remove individual instructions from a bundle. 6186b560918426182d2b46b899d609911d49f6739f7Chris Lattner MachineInstr *removeFromParent(); 619108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 6209f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink this instruction from its basic block and return it without 6219f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6229f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6239f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6249f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6259f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen MachineInstr *removeFromBundle(); 6269f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 6279f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block and delete it. 6289f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6299f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If this instruction is the header of a bundle, the whole bundle is erased. 6309f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used for instructions inside a bundle, use 6319f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// eraseFromBundle() to erase individual bundled instructions. 6328e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman void eraseFromParent(); 633466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 6349f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' form its basic block and delete it. 6359f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6369f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6379f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6389f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen void eraseFromBundle(); 6399f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 64036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isEHLabel() const { return getOpcode() == TargetOpcode::EH_LABEL; } 64136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isGCLabel() const { return getOpcode() == TargetOpcode::GC_LABEL; } 64236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 6434406604047423576e36657c7ede266ca42e79642Dan Gohman /// isLabel - Returns true if the MachineInstr represents a label. 6444406604047423576e36657c7ede266ca42e79642Dan Gohman /// 64536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isLabel() const { return isEHLabel() || isGCLabel(); } 64636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isCFIInstruction() const { 64736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return getOpcode() == TargetOpcode::CFI_INSTRUCTION; 648518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 649108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 65036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // True if the instruction represents a position in the function. 65136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isPosition() const { return isLabel() || isCFIInstruction(); } 65236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 653518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isDebugValue() const { return getOpcode() == TargetOpcode::DBG_VALUE; } 654818833f27929d650b4323774cd3660860588f687Adrian Prantl /// A DBG_VALUE is indirect iff the first operand is a register and 655818833f27929d650b4323774cd3660860588f687Adrian Prantl /// the second operand is an immediate. 656818833f27929d650b4323774cd3660860588f687Adrian Prantl bool isIndirectDebugValue() const { 657ad577a5c1dc325456c495f50e024711273bdf434Adrian Prantl return isDebugValue() 658818833f27929d650b4323774cd3660860588f687Adrian Prantl && getOperand(0).isReg() 659818833f27929d650b4323774cd3660860588f687Adrian Prantl && getOperand(1).isImm(); 660818833f27929d650b4323774cd3660860588f687Adrian Prantl } 661108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 662518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isPHI() const { return getOpcode() == TargetOpcode::PHI; } 663518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isKill() const { return getOpcode() == TargetOpcode::KILL; } 664518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isImplicitDef() const { return getOpcode()==TargetOpcode::IMPLICIT_DEF; } 665518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInlineAsm() const { return getOpcode() == TargetOpcode::INLINEASM; } 666b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier bool isMSInlineAsm() const { 667b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier return getOpcode() == TargetOpcode::INLINEASM && getInlineAsmDialect(); 668b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier } 669c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool isStackAligningInlineAsm() const; 670576cd11ab8035d4240f7e6ea8d7c6c2e45154f86Chad Rosier InlineAsm::AsmDialect getInlineAsmDialect() const; 671518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInsertSubreg() const { 672518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::INSERT_SUBREG; 673518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 674518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isSubregToReg() const { 675518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::SUBREG_TO_REG; 676518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 6773d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng bool isRegSequence() const { 6783d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng return getOpcode() == TargetOpcode::REG_SEQUENCE; 6793d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng } 680ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng bool isBundle() const { 681ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng return getOpcode() == TargetOpcode::BUNDLE; 682ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 683a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen bool isCopy() const { 684a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen return getOpcode() == TargetOpcode::COPY; 685a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen } 686cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola bool isFullCopy() const { 687cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg(); 688cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola } 689a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen 690273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// isCopyLike - Return true if the instruction behaves like a copy. 691273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// This does not include native copy instructions. 692273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen bool isCopyLike() const { 6930bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() || isSubregToReg(); 6940bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen } 6950bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen 6960bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen /// isIdentityCopy - Return true is the instruction is an identity copy. 6970bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen bool isIdentityCopy() const { 6980bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() && getOperand(0).getReg() == getOperand(1).getReg() && 6990bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen getOperand(0).getSubReg() == getOperand(1).getSubReg(); 700273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen } 701273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen 7023f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// isTransient - Return true if this is a transient instruction that is 7033f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// either very likely to be eliminated during register allocation (such as 7043f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// copy-like instructions), or if this instruction doesn't have an 7053f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// execution-time cost. 7063f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen bool isTransient() const { 7073f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen switch(getOpcode()) { 7083f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen default: return false; 7093f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Copy-like instructions are usually eliminated during register allocation. 7103f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PHI: 7113f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::COPY: 7123f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::INSERT_SUBREG: 7133f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::SUBREG_TO_REG: 7143f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::REG_SEQUENCE: 7153f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Pseudo-instructions that don't produce any real output. 7163f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::IMPLICIT_DEF: 7173f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::KILL: 71836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case TargetOpcode::CFI_INSTRUCTION: 7193f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::EH_LABEL: 7203f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::GC_LABEL: 7213f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::DBG_VALUE: 7223f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen return true; 7233f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7243f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7253f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen 72625377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// Return the number of instructions inside the MI bundle, excluding the 72725377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// bundle header. 72825377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// 72925377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// This is the number of instructions that MachineBasicBlock::iterator 73025377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// skips, 0 for unbundled instructions. 731ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng unsigned getBundleSize() const; 732ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 7336130f66eaae89f8878590796977678afa8448926Evan Cheng /// readsRegister - Return true if the MachineInstr reads the specified 7346130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there 7356130f66eaae89f8878590796977678afa8448926Evan Cheng /// is a read of a super-register. 7367ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// This does not count partial redefines of virtual registers as reads: 7377ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// %reg1024:6 = OP. 7386130f66eaae89f8878590796977678afa8448926Evan Cheng bool readsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 7396130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, false, TRI) != -1; 7406130f66eaae89f8878590796977678afa8448926Evan Cheng } 7416130f66eaae89f8878590796977678afa8448926Evan Cheng 7427ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// readsVirtualRegister - Return true if the MachineInstr reads the specified 7437ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// virtual register. Take into account that a partial define is a 7447ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// read-modify-write operation. 74518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool readsVirtualRegister(unsigned Reg) const { 74618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen return readsWritesVirtualRegister(Reg).first; 74718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen } 74818b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen 74918b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// readsWritesVirtualRegister - Return a pair of bools (reads, writes) 75018b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// indicating if this instruction reads or writes Reg. This also considers 75118b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// partial defines. 75218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// If Ops is not null, all operand indices for Reg are added. 75318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen std::pair<bool,bool> readsWritesVirtualRegister(unsigned Reg, 75418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen SmallVectorImpl<unsigned> *Ops = 0) const; 7557ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 7566130f66eaae89f8878590796977678afa8448926Evan Cheng /// killsRegister - Return true if the MachineInstr kills the specified 7576130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there is 7586130f66eaae89f8878590796977678afa8448926Evan Cheng /// a kill of a super-register. 7596130f66eaae89f8878590796977678afa8448926Evan Cheng bool killsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 7606130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, true, TRI) != -1; 7616130f66eaae89f8878590796977678afa8448926Evan Cheng } 7626130f66eaae89f8878590796977678afa8448926Evan Cheng 7631015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// definesRegister - Return true if the MachineInstr fully defines the 7646130f66eaae89f8878590796977678afa8448926Evan Cheng /// specified register. If TargetRegisterInfo is passed, then it also checks 7656130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a def of a super-register. 7661015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7671015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool definesRegister(unsigned Reg, const TargetRegisterInfo *TRI=NULL) const { 7681015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, false, TRI) != -1; 7691015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng } 7701015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng 7711015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// modifiesRegister - Return true if the MachineInstr modifies (fully define 7721015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// or partially define) the specified register. 7731015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7741015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool modifiesRegister(unsigned Reg, const TargetRegisterInfo *TRI) const { 7751015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, true, TRI) != -1; 7766130f66eaae89f8878590796977678afa8448926Evan Cheng } 7776130f66eaae89f8878590796977678afa8448926Evan Cheng 7786130f66eaae89f8878590796977678afa8448926Evan Cheng /// registerDefIsDead - Returns true if the register is dead in this machine 7796130f66eaae89f8878590796977678afa8448926Evan Cheng /// instruction. If TargetRegisterInfo is passed, then it also checks 7806130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a dead def of a super-register. 7816130f66eaae89f8878590796977678afa8448926Evan Cheng bool registerDefIsDead(unsigned Reg, 7826130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const { 7831015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, true, false, TRI) != -1; 7846130f66eaae89f8878590796977678afa8448926Evan Cheng } 7856130f66eaae89f8878590796977678afa8448926Evan Cheng 786faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng /// findRegisterUseOperandIdx() - Returns the operand index that is a use of 78710f9101c4c0df0837414976ad0ef0e86d6771059Jim 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 Cheng int findRegisterUseOperandIdx(unsigned Reg, bool isKill = false, 7906130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 7916130f66eaae89f8878590796977678afa8448926Evan Cheng 7926130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterUseOperand - Wrapper for findRegisterUseOperandIdx, it returns 7936130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 7949180c8e3cfd12abd21242768db05072a209ca6e7Evan Cheng MachineOperand *findRegisterUseOperand(unsigned Reg, bool isKill = false, 7956130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 7966130f66eaae89f8878590796977678afa8448926Evan Cheng int Idx = findRegisterUseOperandIdx(Reg, isKill, TRI); 7976130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 7986130f66eaae89f8878590796977678afa8448926Evan Cheng } 799108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 8006130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperandIdx() - Returns the operand index that is a def of 801703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman /// the specified register or -1 if it is not found. If isDead is true, defs 8021015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// that are not dead are skipped. If Overlap is true, then it also looks for 8031015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// defs that merely overlap the specified register. If TargetRegisterInfo is 8041015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// non-null, then it also checks if there is a def of a super-register. 8051cf8b0f2a5435d8444b6cc7d4a27eef424398273Jakob Stoklund Olesen /// This may also return a register mask operand when Overlap is true. 8061015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int findRegisterDefOperandIdx(unsigned Reg, 8071015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool isDead = false, bool Overlap = false, 8086130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 8096130f66eaae89f8878590796977678afa8448926Evan Cheng 8106130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperand - Wrapper for findRegisterDefOperandIdx, it returns 8116130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 812631bd3cdf39eb099d5d5d279b17b08f119956538Evan Cheng MachineOperand *findRegisterDefOperand(unsigned Reg, bool isDead = false, 8136130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 8141015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int Idx = findRegisterDefOperandIdx(Reg, isDead, false, TRI); 8156130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 8166130f66eaae89f8878590796977678afa8448926Evan Cheng } 81719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 818f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// findFirstPredOperandIdx() - Find the index of the first operand in the 819f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// operand list that is used to represent the predicate. It returns -1 if 820f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// none is found. 821f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng int findFirstPredOperandIdx() const; 822108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 8239dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// findInlineAsmFlagIdx() - Find the index of the flag word operand that 8249dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// corresponds to operand OpIdx on an inline asm instruction. Returns -1 if 8259dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// getOperand(OpIdx) does not belong to an inline asm operand group. 8269dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8279dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// If GroupNo is not NULL, it will receive the number of the operand group 8289dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// containing OpIdx. 8299dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8309dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// The flag operand is an immediate that can be decoded with methods like 8319dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// InlineAsm::hasRegClassConstraint(). 8329dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8339dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen int findInlineAsmFlagIdx(unsigned OpIdx, unsigned *GroupNo = 0) const; 8349dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen 835f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// getRegClassConstraint - Compute the static register class constraint for 836f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// operand OpIdx. For normal instructions, this is derived from the 837f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// MCInstrDesc. For inline assembly it is derived from the flag words. 838f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 839f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// Returns NULL if the static register classs constraint cannot be 840f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// determined. 841f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 842f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterClass* 843f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen getRegClassConstraint(unsigned OpIdx, 844f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetInstrInfo *TII, 845f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterInfo *TRI) const; 846f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen 84736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Applies the constraints (def/use) implied by this MI on \p Reg to 84836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// the given \p CurRC. 84936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// If \p ExploreBundle is set and MI is part of a bundle, all the 85036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// instructions inside the bundle will be taken into account. In other words, 85136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// this method accumulates all the constrains of the operand of this MI and 85236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// the related bundle if MI is a bundle or inside a bundle. 85336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 85436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// Returns the register class that statisfies both \p CurRC and the 85536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// constraints set by MI. Returns NULL if such a register class does not 85636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// exist. 85736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 85836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre CurRC must not be NULL. 85936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass *getRegClassConstraintEffectForVReg( 86036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Reg, const TargetRegisterClass *CurRC, 86136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, const TargetRegisterInfo *TRI, 86236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool ExploreBundle = false) const; 86336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 86436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Applies the constraints (def/use) implied by the \p OpIdx operand 86536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// to the given \p CurRC. 86636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 86736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// Returns the register class that statisfies both \p CurRC and the 86836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// constraints set by \p OpIdx MI. Returns NULL if such a register class 86936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// does not exist. 87036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 87136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre CurRC must not be NULL. 87236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre The operand at \p OpIdx must be a register. 87336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass * 87436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines getRegClassConstraintEffect(unsigned OpIdx, const TargetRegisterClass *CurRC, 87536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, 87636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterInfo *TRI) const; 87736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 87894083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// tieOperands - Add a tie between the register operands at DefIdx and 87994083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// UseIdx. The tie will cause the register allocator to ensure that the two 88094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// operands are assigned the same physical register. 88194083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// 88294083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// Tied operands are managed automatically for explicit operands in the 88394083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// MCInstrDesc. This method is for exceptional cases like inline asm. 88494083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen void tieOperands(unsigned DefIdx, unsigned UseIdx); 88594083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen 886699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// findTiedOperandIdx - Given the index of a tied register operand, find the 887699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// operand it is tied to. Defs are tied to uses and vice versa. Returns the 888699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// index of the tied operand which must exist. 889699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen unsigned findTiedOperandIdx(unsigned OpIdx) const; 890699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 891d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// isRegTiedToUseOperand - Given the index of a register def operand, 892d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// check if the register def is tied to a source operand, due to either 893d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// two-address elimination or inline assembly constraints. Returns the 894a21bb20f5943f5f4c66d4727784c26007db2470cJim Grosbach /// first tied use operand index by reference if UseOpIdx is not null. 89599c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx = 0) const { 89699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(DefOpIdx); 89799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isDef() || !MO.isTied()) 89899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 89999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (UseOpIdx) 90099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *UseOpIdx = findTiedOperandIdx(DefOpIdx); 90199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 90299c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 90332dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 904a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// isRegTiedToDefOperand - Return true if the use operand of the specified 905a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// index is tied to an def operand. It also returns the def operand index by 906a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// reference if DefOpIdx is not null. 90799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx = 0) const { 90899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(UseOpIdx); 90999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || !MO.isTied()) 91099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 91199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (DefOpIdx) 91299c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *DefOpIdx = findTiedOperandIdx(UseOpIdx); 91399c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 91499c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 915a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 916e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// clearKillInfo - Clears kill flags on all operands. 917e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// 918e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman void clearKillInfo(); 919e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman 9209edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// substituteRegister - Replace all occurrences of FromReg with ToReg:SubIdx, 9219edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// properly composing subreg indices where necessary. 9229edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen void substituteRegister(unsigned FromReg, unsigned ToReg, unsigned SubIdx, 9239edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen const TargetRegisterInfo &RegInfo); 9249edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen 925b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterKilled - We have determined MI kills a register. Look for the 926b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// operand that uses it and mark it as IsKill. If AddIfNotFound is true, 927b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// add a implicit operand if it's not found. Returns true if the operand 928b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// exists / is added. 9296f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterKilled(unsigned IncomingReg, 9306f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 931b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 9328efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 9331a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// clearRegisterKills - Clear all kill flags affecting Reg. If RegInfo is 9341a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// provided, this includes super-register kills. 9351a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen void clearRegisterKills(unsigned Reg, const TargetRegisterInfo *RegInfo); 9361a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen 937b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterDead - We have determined MI defined a register without a use. 938b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// Look for the operand that defines it and mark it as IsDead. If 939b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// AddIfNotFound is true, add a implicit operand if it's not found. Returns 940b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// true if the operand exists / is added. 9414afb5f560d2c3171eda8be6ae64998080dddec0cMatthias Braun bool addRegisterDead(unsigned Reg, const TargetRegisterInfo *RegInfo, 942b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 943b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 9448efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// addRegisterDefined - We have determined MI defines a register. Make sure 9458efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// there is an operand defining Reg. 9464afb5f560d2c3171eda8be6ae64998080dddec0cMatthias Braun void addRegisterDefined(unsigned Reg, const TargetRegisterInfo *RegInfo = 0); 9478efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 9482a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// setPhysRegsDeadExcept - Mark every physreg used by this instruction as 9492a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// dead except those in the UsedRegs list. 95077180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// 95177180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// On instructions with register mask operands, also add implicit-def 95277180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// operands for all registers in UsedRegs. 953a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen void setPhysRegsDeadExcept(ArrayRef<unsigned> UsedRegs, 954db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman const TargetRegisterInfo &TRI); 955db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman 9569f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// isSafeToMove - Return true if it is safe to move this instruction. If 9579f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// SawStore is set to true, it means that there is a store (or call) between 9589f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// the instruction's location and its intended destination. 959ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToMove(const TargetInstrInfo *TII, AliasAnalysis *AA, 960ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool &SawStore) const; 961b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 962f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// hasOrderedMemoryRef - Return true if this instruction may have an ordered 963f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// or volatile memory reference, or if the information describing the memory 964f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// reference is not available. Return false if it is known to have no 965f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// ordered or volatile memory references. 966f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen bool hasOrderedMemoryRef() const; 9673e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 968e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// isInvariantLoad - Return true if this instruction is loading from a 969e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// location whose value is invariant across the function. For example, 970f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman /// loading a value from the constant pool or from the argument area of 971e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// a function if it does not change. This should only return true of *all* 972e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// loads the instruction does are invariant (if it does multiple loads). 973a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool isInvariantLoad(AliasAnalysis *AA) const; 974e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 975229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// isConstantValuePHI - If the specified instruction is a PHI that always 976229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// merges together the same virtual register, return the register, otherwise 977229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// return 0. 978229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned isConstantValuePHI() const; 979229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 980c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// hasUnmodeledSideEffects - Return true if this instruction has side 981c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// effects that are not modeled by mayLoad / mayStore, etc. 982e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// For all instructions, the property is encoded in MCInstrDesc::Flags 983e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// (see MCInstrDesc::hasUnmodeledSideEffects(). The only exception is 984c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// INLINEASM instruction, in which case the side effect property is encoded 985c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// in one of its operands (see InlineAsm::Extra_HasSideEffect). 986c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// 987c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool hasUnmodeledSideEffects() const; 988c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng 989a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// allDefsAreDead - Return true if all the defs of this instruction are dead. 990a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// 991a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng bool allDefsAreDead() const; 992a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng 993b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// copyImplicitOps - Copy implicit register operands from specified 994b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// instruction to this instruction. 995be06aacaa9a270384599bbfa850b967e9996b9fbJakob Stoklund Olesen void copyImplicitOps(MachineFunction &MF, const MachineInstr *MI); 996b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng 997a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // 998a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // Debugging support 999fa78fbf446b505767e838f9c188707183c57fc9cChris Lattner // 1000c6ada8e5f38168f13830e448f2b9e2d8e3eac72bAndrew Trick void print(raw_ostream &OS, const TargetMachine *TM = 0, 1001c6ada8e5f38168f13830e448f2b9e2d8e3eac72bAndrew Trick bool SkipOpers = false) const; 1002572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner void dump() const; 10032f898d207466bf233b55607e404baca302bc7b5eChris Lattner 1004413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner //===--------------------------------------------------------------------===// 100562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Accessors used to build up machine instructions. 10067ad6be7b01a902f532eebb607306f7b3f4627718Chris Lattner 100756706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add the specified operand to the instruction. If it is an implicit 100856706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// operand, it is added to the end of the operand list. If it is an 100956706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// explicit operand it is added at the end of the explicit operand list 1010108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach /// (before the first implicit operand). 101156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 101256706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MF must be the machine function that was used to allocate this 101356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instruction. 101456706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 101556706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder provides a more convenient interface for creating 101656706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions and adding operands. 101756706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(MachineFunction &MF, const MachineOperand &Op); 1018108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 101956706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add an operand without providing an MF reference. This only works for 102056706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions that are inserted in a basic block. 102156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 102256706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder and the two-argument addOperand(MF, MO) should be 102356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// preferred. 102456706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(const MachineOperand &Op); 1025433cb080bac56b4fac56f7625e07e17b4824ce8aJakob Stoklund Olesen 10265080f4d9919d39b367891dc51e739c571a66036cChris Lattner /// setDesc - Replace the instruction descriptor (thus opcode) of 102767f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// the current instruction with a new one. 10283c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 1029e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng void setDesc(const MCInstrDesc &tid) { MCID = &tid; } 10303c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner 103106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// setDebugLoc - Replace current source information with new such. 1032ab160cf371d6148d49b5401a903dd4ce381b2f8cDale Johannesen /// Avoid using this, the constructor argument is preferable. 103306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 103406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen void setDebugLoc(const DebugLoc dl) { debugLoc = dl; } 103506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 10363c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// RemoveOperand - Erase an operand from an instruction, leaving it with one 10373c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// fewer operand than it started with. 10383c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 103962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner void RemoveOperand(unsigned i); 104062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 1041c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// addMemOperand - Add a MachineMemOperand to the machine instruction. 1042c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// This function should be used only occasionally. The setMemRefs function 1043c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// is the primary method for setting up a MachineInstr's MemRefs list. 1044c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void addMemOperand(MachineFunction &MF, MachineMemOperand *MO); 10458e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1046c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// setMemRefs - Assign this MachineInstr's memory reference descriptor 1047c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// list. This does not transfer ownership. 1048c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) { 1049c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 1050b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen NumMemRefs = uint8_t(NewMemRefsEnd - NewMemRefs); 1051b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen assert(NumMemRefs == NewMemRefsEnd - NewMemRefs && "Too many memrefs"); 1052c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 105369de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1054943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattnerprivate: 105562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// getRegInfo - If this instruction is embedded into a MachineFunction, 105662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return the MachineRegisterInfo object for the current function, otherwise 105762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return null. 105862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *getRegInfo(); 1059d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 1060699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// untieRegOperand - Break any tie involving OpIdx. 1061699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen void untieRegOperand(unsigned OpIdx) { 106294083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen MachineOperand &MO = getOperand(OpIdx); 106394083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen if (MO.isReg() && MO.isTied()) { 1064c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen getOperand(findTiedOperandIdx(OpIdx)).TiedTo = 0; 1065c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen MO.TiedTo = 0; 106694083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen } 1067699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen } 1068699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 1069d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// addImplicitDefUseOperands - Add all implicit def and use operands to 1070d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// this instruction. 10719500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen void addImplicitDefUseOperands(MachineFunction &MF); 1072108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 107362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 107462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 107562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands already be on their use lists. 1076ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void RemoveRegOperandsFromUseLists(MachineRegisterInfo&); 1077108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 107862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// AddRegOperandsToUseLists - Add all of the register operands in 107962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 108062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands not be on their use lists yet. 1081ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void AddRegOperandsToUseLists(MachineRegisterInfo&); 108285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 108385f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a 108485f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// bundle. 108585f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasPropertyInBundle(unsigned Mask, QueryType Type) const; 108636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 108736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Implements the logic of getRegClassConstraintEffectForVReg for the 108836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// this MI and the given operand index \p OpIdx. 108936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// If the related operand does not constrained Reg, this returns CurRC. 109036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass *getRegClassConstraintEffectForVRegImpl( 109136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned OpIdx, unsigned Reg, const TargetRegisterClass *CurRC, 109236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const; 1093a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve}; 109423ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 109505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare 109605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstr* by *value* of the instruction rather than by pointer value. 109705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// The hashing and equality testing functions ignore definitions so this is 109805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// useful for CSE, etc. 109905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Chengstruct MachineInstrExpressionTrait : DenseMapInfo<MachineInstr*> { 110005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getEmptyKey() { 110105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return 0; 110205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 110305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 110405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getTombstoneKey() { 110505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return reinterpret_cast<MachineInstr*>(-1); 110605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 110705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 110867eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng static unsigned getHashValue(const MachineInstr* const &MI); 110905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 111005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static bool isEqual(const MachineInstr* const &LHS, 111105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng const MachineInstr* const &RHS) { 111205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng if (RHS == getEmptyKey() || RHS == getTombstoneKey() || 111305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng LHS == getEmptyKey() || LHS == getTombstoneKey()) 111405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS == RHS; 111505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS->isIdenticalTo(RHS, MachineInstr::IgnoreVRegDefs); 111605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 111705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng}; 111805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 1119b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 1120593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve// Debugging Support 1121593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve 1122cb3718832375a581c5ea23f15918f3ea447a446cOwen Andersoninline raw_ostream& operator<<(raw_ostream &OS, const MachineInstr &MI) { 1123cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson MI.print(OS); 1124cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson return OS; 1125cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson} 1126cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson 1127d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 1128d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 112923ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#endif 1130