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" 27dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines#include "llvm/IR/DebugInfo.h" 2836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines#include "llvm/IR/DebugLoc.h" 290b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/InlineAsm.h" 30255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/MC/MCInstrDesc.h" 31f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen#include "llvm/Support/ArrayRecycler.h" 32255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/Target/TargetOpcodes.h" 33be583b914d8156b99d3da264d5adca37fee8dbc9John Criswell 34d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 35d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 3618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesentemplate <typename T> class SmallVectorImpl; 37e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanclass AliasAnalysis; 38b27087f5aa574f875598f4a309b7dd687c64a455Evan Chengclass TargetInstrInfo; 39f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesenclass TargetRegisterClass; 406f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohmanclass TargetRegisterInfo; 418e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanclass MachineFunction; 42c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanclass MachineMemOperand; 43c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 44b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 458b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// MachineInstr - Representation of each machine instruction. 468b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// 4784be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// This class isn't a POD type, but it must have a trivial destructor. When a 4884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// MachineFunction is deleted, all the contained MachineInstrs are deallocated 4984be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// without having their destructor called. 5084be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// 51fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineInstr : public ilist_node<MachineInstr> { 52c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanpublic: 53c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman typedef MachineMemOperand **mmo_iterator; 54c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 5545282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// Flags to specify different kinds of comments to output in 5645282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// assembly code. These flags carry semantic information not 5745282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// otherwise easily derivable from the IR text. 5845282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// 5945282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner enum CommentFlag { 6045282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner ReloadReuse = 0x1 6145282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner }; 626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov enum MIFlag { 647c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng NoFlags = 0, 657c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng FrameSetup = 1 << 0, // Instruction is used as a part of 666dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // function frame setup code. 67fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledPred = 1 << 1, // Instruction has bundled predecessors. 68fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledSucc = 1 << 2 // Instruction has bundled successors. 696dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov }; 70c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanprivate: 71e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc *MCID; // Instruction descriptor. 72f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineBasicBlock *Parent; // Pointer to the owning basic block. 73f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen 74f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen // Operands are allocated by an ArrayRecycler. 75f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineOperand *Operands; // Pointer to the first operand. 76f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned NumOperands; // Number of operands on instruction. 77f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef ArrayRecycler<MachineOperand>::Capacity OperandCapacity; 78f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen OperandCapacity CapOperands; // Capacity of the Operands array. 799a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng 806dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t Flags; // Various bits of additional 816dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // information about machine 826dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // instruction. 836dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 846647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t AsmPrinterFlags; // Various bits of information used by 851251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // the AsmPrinter to emit helpful 861251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // comments. This is *not* semantic 871251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information. Do not use this for 881251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // anything other than to convey comment 891251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information to AsmPrinter. 901251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 91b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen uint8_t NumMemRefs; // Information on memory references. 92861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator MemRefs; 93861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer 9406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen DebugLoc debugLoc; // Source line information. 95c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke 96001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper MachineInstr(const MachineInstr&) LLVM_DELETED_FUNCTION; 97001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper void operator=(const MachineInstr&) LLVM_DELETED_FUNCTION; 9884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen // Use MachineFunction::DeleteMachineInstr() instead. 9984be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen ~MachineInstr() LLVM_DELETED_FUNCTION; 100c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 101c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos // Intrusive list support 102fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineInstr>; 103fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineBasicBlock>; 104f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner void setParent(MachineBasicBlock *P) { Parent = P; } 1058e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1068e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr ctor - This constructor creates a copy of the given 1078e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr in the given MachineFunction. 1088e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman MachineInstr(MachineFunction &, const MachineInstr &); 1098e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 11006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// MachineInstr ctor - This constructor create a MachineInstr and add the 11106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// implicit operands. It reserves space for number of operands specified by 112e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// MCInstrDesc. An explicit DebugLoc is supplied. 1139500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen MachineInstr(MachineFunction&, const MCInstrDesc &MCID, 1149500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen const DebugLoc dl, bool NoImp = false); 11506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1168e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // MachineInstrs are pool-allocated and owned by MachineFunction. 1178e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman friend class MachineFunction; 1188e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1198e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanpublic: 120f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner const MachineBasicBlock* getParent() const { return Parent; } 121f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner MachineBasicBlock* getParent() { return Parent; } 12206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1231251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlags - Return the asm printer flags bitvector. 1241251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 1256647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t getAsmPrinterFlags() const { return AsmPrinterFlags; } 1261251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 127cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// clearAsmPrinterFlags - clear the AsmPrinter bitvector 128cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 129cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner void clearAsmPrinterFlags() { AsmPrinterFlags = 0; } 130108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 1311251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlag - Return whether an AsmPrinter flag is set. 1321251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13345282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner bool getAsmPrinterFlag(CommentFlag Flag) const { 1341251443929a256c833717e1030c368d3b6e4cb7cDavid Greene return AsmPrinterFlags & Flag; 1351251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 1361251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 1371251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// setAsmPrinterFlag - Set a flag for the AsmPrinter. 1381251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13945282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner void setAsmPrinterFlag(CommentFlag Flag) { 1406dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov AsmPrinterFlags |= (uint8_t)Flag; 1416dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1426dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1437c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// clearAsmPrinterFlag - clear specific AsmPrinter flags 1447c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1457c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng void clearAsmPrinterFlag(CommentFlag Flag) { 1467c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng AsmPrinterFlags &= ~Flag; 1477c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 1487c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 1496dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlags - Return the MI flags bitvector. 1506dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t getFlags() const { 1516dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags; 1526dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1536dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1546dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlag - Return whether an MI flag is set. 1556dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov bool getFlag(MIFlag Flag) const { 1566dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags & Flag; 1576dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1586dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1596dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// setFlag - Set a MI flag. 1606dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlag(MIFlag Flag) { 1616dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov Flags |= (uint8_t)Flag; 1626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1646dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlags(unsigned flags) { 165bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen // Filter out the automatically maintained flags. 166bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen unsigned Mask = BundledPred | BundledSucc; 167bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen Flags = (Flags & Mask) | (flags & ~Mask); 1681251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 169108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 170ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// clearFlag - Clear a MI flag. 171ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng void clearFlag(MIFlag Flag) { 172ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng Flags &= ~((uint8_t)Flag); 173ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 174ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 1757c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// isInsideBundle - Return true if MI is in a bundle (but not the first MI 1767c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// in a bundle). 177cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 1787c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// A bundle looks like this before it's finalized: 1797c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1807c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI | 1817c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1827c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1837c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 184b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1857c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1867c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1877c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 188b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1897c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1907c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// In this case, the first MI starts a bundle but is not inside a bundle, the 1917c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// next 2 MIs are considered "inside" the bundle. 1927c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1937c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// After a bundle is finalized, it looks like this: 1947c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1957c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | Bundle | 1967c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1977c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1987c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1997c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI * | 2007c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2017c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2027c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 203b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2047c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2057c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2067c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 207b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2087c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2097c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// The first instruction has the special opcode "BUNDLE". It's not "inside" 2107c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// a bundle, but the next three MIs are. 2117c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng bool isInsideBundle() const { 212fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen return getFlag(BundledPred); 213cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner } 2141251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 21599a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// isBundled - Return true if this instruction part of a bundle. This is true 21699a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// if either itself or its following instruction is marked "InsideBundle". 2172e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen bool isBundled() const { 2182e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen return isBundledWithPred() || isBundledWithSucc(); 2192e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen } 22099a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick 221fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 222fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// first instruction in the bundle. 223fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithPred() const { return getFlag(BundledPred); } 224fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 225fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 226fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// last instruction in the bundle. 227fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithSucc() const { return getFlag(BundledSucc); } 228fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 229fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its predecessor. This can be an unbundled 230fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the first instruction in a bundle. 231fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithPred(); 232fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 233fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its successor. This can be an unbundled 234fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the last instruction in a bundle. 235fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithSucc(); 236fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 237fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle above this instruction. 238fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromPred(); 239fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 240fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle below this instruction. 241fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromSucc(); 242fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 24306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// getDebugLoc - Returns the debug location id of this MachineInstr. 24406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 245d5fb7906130989a579d1bfe4490b414331e94feeChris Lattner DebugLoc getDebugLoc() const { return debugLoc; } 2466dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 247dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines /// getDebugVariable() - Return the debug variable referenced by 248dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines /// this DBG_VALUE instruction. 249dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines DIVariable getDebugVariable() const { 250dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines assert(isDebugValue() && "not a DBG_VALUE"); 251dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const MDNode *Var = getOperand(getNumOperands() - 1).getMetadata(); 252dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return DIVariable(Var); 253dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 254dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines 255d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// emitError - Emit an error referring to the source location of this 256d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// instruction. This should only be used for inline assembly that is somehow 257d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// impossible to compile. Other errors should have been handled much 258d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// earlier. 259d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 260d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// If this method returns, the caller should try to recover from the error. 261d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 262d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen void emitError(StringRef Msg) const; 263d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen 26469244300b8a0112efb44b6273ecea4ca6264b8cfChris Lattner /// getDesc - Returns the target instruction descriptor of this 26567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// MachineInstr. 266e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc &getDesc() const { return *MCID; } 267ab8672c8bb83e722b856eac67863542ea7e0cbb2Alkis Evlogimenos 268c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke /// getOpcode - Returns the opcode of this MachineInstr. 269cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 270e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng int getOpcode() const { return MCID->Opcode; } 2719f495b54fa94dba4e0be59ba9736c7cf18d996d9Vikram S. Adve 272cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// Access to explicit operands of the instruction. 273cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 274f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned getNumOperands() const { return NumOperands; } 275ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 276572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner const MachineOperand& getOperand(unsigned i) const { 277a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 278943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 279572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 280572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner MachineOperand& getOperand(unsigned i) { 281a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 282943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 283572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 2846d6c3f86186333037f2fd3fb001e8b2998c080d9Chris Lattner 28519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// getNumExplicitOperands - Returns the number of non-implicit operands. 28619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// 28719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng unsigned getNumExplicitOperands() const; 288ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 289ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner /// iterator/begin/end - Iterate over all operands of a machine instruction. 290f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef MachineOperand *mop_iterator; 291f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef const MachineOperand *const_mop_iterator; 292ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 293f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_begin() { return Operands; } 294f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_end() { return Operands + NumOperands; } 295ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 296f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_begin() const { return Operands; } 297f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_end() const { return Operands + NumOperands; } 298ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 299dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mop_iterator> operands() { 30036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mop_iterator>(operands_begin(), operands_end()); 30136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 302dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<const_mop_iterator> operands() const { 30336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<const_mop_iterator>(operands_begin(), operands_end()); 30436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 305dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mop_iterator> explicit_operands() { 306dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<mop_iterator>( 307dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin(), operands_begin() + getNumExplicitOperands()); 308dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 309dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<const_mop_iterator> explicit_operands() const { 310dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<const_mop_iterator>( 311dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin(), operands_begin() + getNumExplicitOperands()); 312dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 313dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mop_iterator> implicit_operands() { 314dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<mop_iterator>(explicit_operands().end(), 315dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_end()); 316dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 317dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<const_mop_iterator> implicit_operands() const { 318dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<const_mop_iterator>(explicit_operands().end(), 319dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_end()); 320dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 321dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mop_iterator> defs() { 322dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<mop_iterator>( 323dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin(), operands_begin() + getDesc().getNumDefs()); 324dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 325dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<const_mop_iterator> defs() const { 326dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<const_mop_iterator>( 327dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin(), operands_begin() + getDesc().getNumDefs()); 328dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 329dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mop_iterator> uses() { 330dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<mop_iterator>( 331dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin() + getDesc().getNumDefs(), operands_end()); 332dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 333dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<const_mop_iterator> uses() const { 334dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return iterator_range<const_mop_iterator>( 335dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines operands_begin() + getDesc().getNumDefs(), operands_end()); 336dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines } 33736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 33869de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman /// Access to memory operands of the instruction 339c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator memoperands_begin() const { return MemRefs; } 340861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator memoperands_end() const { return MemRefs + NumMemRefs; } 341861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer bool memoperands_empty() const { return NumMemRefs == 0; } 34269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 343dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mmo_iterator> memoperands() { 34436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mmo_iterator>(memoperands_begin(), memoperands_end()); 34536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 346dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines iterator_range<mmo_iterator> memoperands() const { 34736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return iterator_range<mmo_iterator>(memoperands_begin(), memoperands_end()); 34836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines } 34936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 350cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// hasOneMemOperand - Return true if this instruction has exactly one 351cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// MachineMemOperand. 352cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman bool hasOneMemOperand() const { 353861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer return NumMemRefs == 1; 354cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman } 355cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman 3565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// API for querying MachineInstr properties. They are the same as MCInstrDesc 3575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// queries but they are bundle aware. 3585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 35943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng enum QueryType { 36043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng IgnoreBundle, // Ignore bundles 36143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AnyInBundle, // Return true if any instruction in bundle has property 36243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AllInBundle // Return true if all instructions in bundle have property 36343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng }; 36443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng 3655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasProperty - Return true if the instruction (or in the case of a bundle, 3665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the instructions inside the bundle) has the specified property. 3675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The first argument is the property being queried. 3685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The second argument indicates whether the query should look inside 3695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction bundles. 37085f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const { 3714aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // Inline the fast path for unbundled or bundle-internal instructions. 3724aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen if (Type == IgnoreBundle || !isBundled() || isBundledWithPred()) 37385f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return getDesc().getFlags() & (1 << MCFlag); 37485f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 3754aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // If this is the first instruction in a bundle, take the slow path. 37685f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return hasPropertyInBundle(1 << MCFlag, Type); 37785f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer } 3785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isVariadic - Return true if this instruction can have a variable number of 3805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands. In this case, the variable operands will be after the normal 3815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands but before the implicit definitions and uses (if any are 3825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// present). 38343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isVariadic(QueryType Type = IgnoreBundle) const { 38443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Variadic, Type); 3855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasOptionalDef - Set if this instruction has an optional definition, e.g. 3885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// ARM instructions which can set condition code if 's' bit is set. 38943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasOptionalDef(QueryType Type = IgnoreBundle) const { 39043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasOptionalDef, Type); 3915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isPseudo - Return true if this is a pseudo instruction that doesn't 3945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// correspond to a real machine instruction. 3957c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 39643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPseudo(QueryType Type = IgnoreBundle) const { 39743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Pseudo, Type); 3985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 40043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isReturn(QueryType Type = AnyInBundle) const { 40143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Return, Type); 4025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 40443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCall(QueryType Type = AnyInBundle) const { 40543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Call, Type); 4065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBarrier - Returns true if the specified instruction stops control flow 4095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// from executing the instruction immediately following it. Examples include 4105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// unconditional branches and return instructions. 41143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBarrier(QueryType Type = AnyInBundle) const { 41243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Barrier, Type); 4135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4147c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 4155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isTerminator - Returns true if this instruction part of the terminator for 4165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// a basic block. Typically this is things like return and branch 4175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions. 4185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 4195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Various passes use this to insert code into the bottom of a basic block, 4205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// but before control flow occurs. 42143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isTerminator(QueryType Type = AnyInBundle) const { 42243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Terminator, Type); 4237c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 4247c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 4255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBranch - Returns true if this is a conditional, unconditional, or 4265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// indirect branch. Predicates below can be used to discriminate between 4275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// these cases, and the TargetInstrInfo::AnalyzeBranch method can be used to 4285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// get more information. 42943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBranch(QueryType Type = AnyInBundle) const { 43043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Branch, Type); 4315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isIndirectBranch - Return true if this is an indirect branch, such as a 4345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// branch through a register. 43543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isIndirectBranch(QueryType Type = AnyInBundle) const { 43643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::IndirectBranch, Type); 4375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConditionalBranch - Return true if this is a branch which may fall 4405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// through to the next instruction or may transfer control flow to some other 4415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// block. The TargetInstrInfo::AnalyzeBranch method can be used to get more 4425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// information about this branch. 44343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConditionalBranch(QueryType Type = AnyInBundle) const { 44443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & !isBarrier(Type) & !isIndirectBranch(Type); 4455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isUnconditionalBranch - Return true if this is a branch which always 4485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transfers control flow to some other block. The 4495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::AnalyzeBranch method can be used to get more information 4505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// about this branch. 45143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isUnconditionalBranch(QueryType Type = AnyInBundle) const { 45243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & isBarrier(Type) & !isIndirectBranch(Type); 4535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 455a370bdb42eaefdb103f971ad2e84c75573d77c68Joey Gouly /// Return true if this instruction has a predicate operand that 456a370bdb42eaefdb103f971ad2e84c75573d77c68Joey Gouly /// controls execution. It may be set to 'always', or may be set to other 4575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// values. There are various methods in TargetInstrInfo that can be used to 4585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// control and modify the predicate in this instruction. 45943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPredicable(QueryType Type = AllInBundle) const { 4605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // If it's a bundle than all bundled instructions must be predicable for this 4615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // to return true. 46243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Predicable, Type); 4635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCompare - Return true if this instruction is a comparison. 46643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCompare(QueryType Type = IgnoreBundle) const { 46743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Compare, Type); 4685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isMoveImmediate - Return true if this instruction is a move immediate 4715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// (including conditional moves) instruction. 47243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isMoveImmediate(QueryType Type = IgnoreBundle) const { 47343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MoveImm, Type); 4745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBitcast - Return true if this instruction is a bitcast instruction. 4775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 47843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBitcast(QueryType Type = IgnoreBundle) const { 47943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Bitcast, Type); 4805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 482f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// isSelect - Return true if this instruction is a select instruction. 483f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// 484f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen bool isSelect(QueryType Type = IgnoreBundle) const { 485f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen return hasProperty(MCID::Select, Type); 486f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen } 487f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen 4885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isNotDuplicable - Return true if this instruction cannot be safely 4895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// duplicated. For example, if the instruction has a unique labels attached 4905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// to it, duplicating it would cause multiple definition errors. 49143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isNotDuplicable(QueryType Type = AnyInBundle) const { 49243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::NotDuplicable, Type); 4935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasDelaySlot - Returns true if the specified instruction has a delay slot 4965a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which must be filled by the code generator. 49743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasDelaySlot(QueryType Type = AnyInBundle) const { 49843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::DelaySlot, Type); 4995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// canFoldAsLoad - Return true for instructions that can be folded as 5025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// memory operands in other instructions. The most common use for this 5035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is instructions that are simple loads from memory that don't modify 5045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the loaded value in any way, but it can also be used for instructions 5055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// that can be expressed as constant-pool loads, such as V_SETALLONES 5065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// on x86, to allow them to be folded when it is beneficial. 5075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// This should only be set on instructions that return a value in their 5085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// only virtual register definition. 50943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool canFoldAsLoad(QueryType Type = IgnoreBundle) const { 51043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::FoldableAsLoad, Type); 5115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Side Effect Analysis 5155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayLoad - Return true if this instruction could possibly read memory. 5185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple load 5195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may load a value and modify it, for example. 52043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayLoad(QueryType Type = AnyInBundle) const { 521daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 522daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 523daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayLoad) 524daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 525daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 526daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayLoad, Type); 5275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayStore - Return true if this instruction could possibly modify memory. 5315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple store 5325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may store a modified value based on their operands, or 5335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// may not actually modify anything, for example. 53443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayStore(QueryType Type = AnyInBundle) const { 535daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 536daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 537daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayStore) 538daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 539daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 540daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayStore, Type); 5415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Flags that indicate whether an instruction can be modified by a method. 5455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 5465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCommutable - Return true if this may be a 2- or 3-address 5485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (of the form "X = op Y, Z, ..."), which produces the same 5495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// result if Y and Z are exchanged. If this flag is set, then the 5505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::commuteInstruction method may be used to hack on the 5515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction. 5525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Note that this flag may be set on instructions that are only commutable 5545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// sometimes. In these cases, the call to commuteInstruction will fail. 5555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Also note that some instructions require non-trivial modification to 5565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// commute them. 55743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCommutable(QueryType Type = IgnoreBundle) const { 55843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Commutable, Type); 5595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConvertibleTo3Addr - Return true if this is a 2-address instruction 5625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which can be changed into a 3-address instruction if needed. Doing this 5635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transformation can be profitable in the register allocator, because it 5645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that the instruction can use a 2-address form if possible, but 5655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// degrade into a less efficient form if the source and dest register cannot 5665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// be assigned to the same register. For example, this allows the x86 5675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// backend to turn a "shl reg, 3" instruction into an LEA instruction, which 5685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is the same speed as the shift but has bigger code size. 5695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this returns true, then the target must implement the 5715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::convertToThreeAddress method for this instruction, which 5725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is allowed to fail if the transformation isn't valid for this specific 5735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (e.g. shl reg, 4 on x86). 5745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 57543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConvertibleTo3Addr(QueryType Type = IgnoreBundle) const { 57643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ConvertibleTo3Addr, Type); 5775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// usesCustomInsertionHook - Return true if this instruction requires 5805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// custom insertion support when the DAG scheduler is inserting it into a 5815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// machine basic block. If this is true for the instruction, it basically 5825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that it is a pseudo instruction used at SelectionDAG time that is 5835a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// expanded out into magic code by the target when MachineInstrs are formed. 5845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this is true, the TargetLoweringInfo::InsertAtEndOfBasicBlock method 5865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is used to insert this into the MachineBasicBlock. 58743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool usesCustomInsertionHook(QueryType Type = IgnoreBundle) const { 58843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::UsesCustomInserter, Type); 5895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasPostISelHook - Return true if this instruction requires *adjustment* 5925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// after instruction selection by calling a target hook. For example, this 5935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// can be used to fill in ARM 's' optional operand depending on whether 5945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the conditional flag register is used. 59543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasPostISelHook(QueryType Type = IgnoreBundle) const { 59643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasPostISelHook, Type); 5975a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isRematerializable - Returns true if this instruction is a candidate for 6005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// remat. This flag is deprecated, please don't use it anymore. If this 6015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// flag is set, the isReallyTriviallyReMaterializable() method is called to 6025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// verify the instruction is really rematable. 60343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isRematerializable(QueryType Type = AllInBundle) const { 6045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // It's only possible to re-mat a bundle if all bundled instructions are 6055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // re-materializable. 60643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Rematerializable, Type); 6075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 6085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 6095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isAsCheapAsAMove - Returns true if this instruction has the same cost (or 6105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// less) than a move instruction. This is useful during certain types of 6115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// optimizations (e.g., remat during two-address conversion or machine licm) 6125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// where we would like to remat or hoist the instruction, but not if it costs 6135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// more than moving the instruction into the appropriate register. Note, we 6145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// are not marking copies from and to the same register class with this flag. 61543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isAsCheapAsAMove(QueryType Type = AllInBundle) const { 6165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Only returns true for a bundle if all bundled instructions are cheap. 61743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::CheapAsAMove, Type); 6185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 6195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 6205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraSrcRegAllocReq - Returns true if this instruction source operands 6215a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 6225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::STRD's two source registers must be an 6235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::STM registers have to be in ascending order. 6245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 6255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for sources of instructions with this flag. 62643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraSrcRegAllocReq(QueryType Type = AnyInBundle) const { 62743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraSrcRegAllocReq, Type); 6285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 6295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 6305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraDefRegAllocReq - Returns true if this instruction def operands 6315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 6325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::LDRD's two def registers must be an 6335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::LDM registers have to be in ascending order. 6345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 6355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for definitions of instructions with this flag. 63643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraDefRegAllocReq(QueryType Type = AnyInBundle) const { 63743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraDefRegAllocReq, Type); 6385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 6395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 6405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 641506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng enum MICheckType { 642506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng CheckDefs, // Check all operands for equality 643cbc988be22bc9411d95215c8b7251b5f85710674Evan Cheng CheckKillDead, // Check all operands including kill / dead markers 644506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreDefs, // Ignore all definitions 645506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreVRegDefs // Ignore virtual register definitions 646506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng }; 647506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng 648fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// isIdenticalTo - Return true if this instruction is identical to (same 649fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// opcode and same operands as) the specified instruction. 650506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng bool isIdenticalTo(const MachineInstr *Other, 651506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng MICheckType Check = CheckDefs) const; 652a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve 6539f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block, and return it without 6549f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6559f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6569f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used on bundled instructions, use 6579f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// removeFromBundle() to remove individual instructions from a bundle. 6586b560918426182d2b46b899d609911d49f6739f7Chris Lattner MachineInstr *removeFromParent(); 659108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 6609f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink this instruction from its basic block and return it without 6619f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6629f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6639f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6649f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6659f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen MachineInstr *removeFromBundle(); 6669f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 6679f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block and delete it. 6689f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6699f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If this instruction is the header of a bundle, the whole bundle is erased. 6709f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used for instructions inside a bundle, use 6719f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// eraseFromBundle() to erase individual bundled instructions. 6728e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman void eraseFromParent(); 673466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 6749f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' form its basic block and delete it. 6759f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6769f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6779f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6789f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen void eraseFromBundle(); 6799f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 68036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isEHLabel() const { return getOpcode() == TargetOpcode::EH_LABEL; } 68136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isGCLabel() const { return getOpcode() == TargetOpcode::GC_LABEL; } 68236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 6834406604047423576e36657c7ede266ca42e79642Dan Gohman /// isLabel - Returns true if the MachineInstr represents a label. 6844406604047423576e36657c7ede266ca42e79642Dan Gohman /// 68536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isLabel() const { return isEHLabel() || isGCLabel(); } 68636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isCFIInstruction() const { 68736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines return getOpcode() == TargetOpcode::CFI_INSTRUCTION; 688518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 689108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 69036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines // True if the instruction represents a position in the function. 69136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool isPosition() const { return isLabel() || isCFIInstruction(); } 69236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 693518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isDebugValue() const { return getOpcode() == TargetOpcode::DBG_VALUE; } 694818833f27929d650b4323774cd3660860588f687Adrian Prantl /// A DBG_VALUE is indirect iff the first operand is a register and 695818833f27929d650b4323774cd3660860588f687Adrian Prantl /// the second operand is an immediate. 696818833f27929d650b4323774cd3660860588f687Adrian Prantl bool isIndirectDebugValue() const { 697ad577a5c1dc325456c495f50e024711273bdf434Adrian Prantl return isDebugValue() 698818833f27929d650b4323774cd3660860588f687Adrian Prantl && getOperand(0).isReg() 699818833f27929d650b4323774cd3660860588f687Adrian Prantl && getOperand(1).isImm(); 700818833f27929d650b4323774cd3660860588f687Adrian Prantl } 701108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 702518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isPHI() const { return getOpcode() == TargetOpcode::PHI; } 703518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isKill() const { return getOpcode() == TargetOpcode::KILL; } 704518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isImplicitDef() const { return getOpcode()==TargetOpcode::IMPLICIT_DEF; } 705518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInlineAsm() const { return getOpcode() == TargetOpcode::INLINEASM; } 706b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier bool isMSInlineAsm() const { 707b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier return getOpcode() == TargetOpcode::INLINEASM && getInlineAsmDialect(); 708b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier } 709c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool isStackAligningInlineAsm() const; 710576cd11ab8035d4240f7e6ea8d7c6c2e45154f86Chad Rosier InlineAsm::AsmDialect getInlineAsmDialect() const; 711518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInsertSubreg() const { 712518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::INSERT_SUBREG; 713518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 714518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isSubregToReg() const { 715518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::SUBREG_TO_REG; 716518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 7173d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng bool isRegSequence() const { 7183d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng return getOpcode() == TargetOpcode::REG_SEQUENCE; 7193d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng } 720ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng bool isBundle() const { 721ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng return getOpcode() == TargetOpcode::BUNDLE; 722ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 723a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen bool isCopy() const { 724a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen return getOpcode() == TargetOpcode::COPY; 725a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen } 726cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola bool isFullCopy() const { 727cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg(); 728cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola } 729cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines bool isExtractSubreg() const { 730cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines return getOpcode() == TargetOpcode::EXTRACT_SUBREG; 731cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines } 732a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen 733273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// isCopyLike - Return true if the instruction behaves like a copy. 734273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// This does not include native copy instructions. 735273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen bool isCopyLike() const { 7360bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() || isSubregToReg(); 7370bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen } 7380bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen 7390bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen /// isIdentityCopy - Return true is the instruction is an identity copy. 7400bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen bool isIdentityCopy() const { 7410bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() && getOperand(0).getReg() == getOperand(1).getReg() && 7420bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen getOperand(0).getSubReg() == getOperand(1).getSubReg(); 743273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen } 744273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen 7453f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// isTransient - Return true if this is a transient instruction that is 7463f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// either very likely to be eliminated during register allocation (such as 7473f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// copy-like instructions), or if this instruction doesn't have an 7483f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// execution-time cost. 7493f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen bool isTransient() const { 7503f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen switch(getOpcode()) { 7513f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen default: return false; 7523f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Copy-like instructions are usually eliminated during register allocation. 7533f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PHI: 7543f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::COPY: 7553f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::INSERT_SUBREG: 7563f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::SUBREG_TO_REG: 7573f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::REG_SEQUENCE: 7583f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Pseudo-instructions that don't produce any real output. 7593f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::IMPLICIT_DEF: 7603f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::KILL: 76136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines case TargetOpcode::CFI_INSTRUCTION: 7623f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::EH_LABEL: 7633f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::GC_LABEL: 7643f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::DBG_VALUE: 7653f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen return true; 7663f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7673f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7683f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen 76925377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// Return the number of instructions inside the MI bundle, excluding the 77025377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// bundle header. 77125377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// 77225377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// This is the number of instructions that MachineBasicBlock::iterator 77325377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// skips, 0 for unbundled instructions. 774ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng unsigned getBundleSize() const; 775ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 7766130f66eaae89f8878590796977678afa8448926Evan Cheng /// readsRegister - Return true if the MachineInstr reads the specified 7776130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there 7786130f66eaae89f8878590796977678afa8448926Evan Cheng /// is a read of a super-register. 7797ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// This does not count partial redefines of virtual registers as reads: 7807ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// %reg1024:6 = OP. 781dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool readsRegister(unsigned Reg, 782dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const { 7836130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, false, TRI) != -1; 7846130f66eaae89f8878590796977678afa8448926Evan Cheng } 7856130f66eaae89f8878590796977678afa8448926Evan Cheng 7867ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// readsVirtualRegister - Return true if the MachineInstr reads the specified 7877ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// virtual register. Take into account that a partial define is a 7887ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// read-modify-write operation. 78918b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool readsVirtualRegister(unsigned Reg) const { 79018b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen return readsWritesVirtualRegister(Reg).first; 79118b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen } 79218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen 79318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// readsWritesVirtualRegister - Return a pair of bools (reads, writes) 79418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// indicating if this instruction reads or writes Reg. This also considers 79518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// partial defines. 79618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// If Ops is not null, all operand indices for Reg are added. 79718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen std::pair<bool,bool> readsWritesVirtualRegister(unsigned Reg, 798dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines SmallVectorImpl<unsigned> *Ops = nullptr) const; 7997ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 8006130f66eaae89f8878590796977678afa8448926Evan Cheng /// killsRegister - Return true if the MachineInstr kills the specified 8016130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there is 8026130f66eaae89f8878590796977678afa8448926Evan Cheng /// a kill of a super-register. 803dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool killsRegister(unsigned Reg, 804dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const { 8056130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, true, TRI) != -1; 8066130f66eaae89f8878590796977678afa8448926Evan Cheng } 8076130f66eaae89f8878590796977678afa8448926Evan Cheng 8081015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// definesRegister - Return true if the MachineInstr fully defines the 8096130f66eaae89f8878590796977678afa8448926Evan Cheng /// specified register. If TargetRegisterInfo is passed, then it also checks 8106130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a def of a super-register. 8111015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 812dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool definesRegister(unsigned Reg, 813dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const { 8141015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, false, TRI) != -1; 8151015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng } 8161015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng 8171015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// modifiesRegister - Return true if the MachineInstr modifies (fully define 8181015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// or partially define) the specified register. 8191015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 8201015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool modifiesRegister(unsigned Reg, const TargetRegisterInfo *TRI) const { 8211015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, true, TRI) != -1; 8226130f66eaae89f8878590796977678afa8448926Evan Cheng } 8236130f66eaae89f8878590796977678afa8448926Evan Cheng 8246130f66eaae89f8878590796977678afa8448926Evan Cheng /// registerDefIsDead - Returns true if the register is dead in this machine 8256130f66eaae89f8878590796977678afa8448926Evan Cheng /// instruction. If TargetRegisterInfo is passed, then it also checks 8266130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a dead def of a super-register. 8276130f66eaae89f8878590796977678afa8448926Evan Cheng bool registerDefIsDead(unsigned Reg, 828dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const { 8291015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, true, false, TRI) != -1; 8306130f66eaae89f8878590796977678afa8448926Evan Cheng } 8316130f66eaae89f8878590796977678afa8448926Evan Cheng 832faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng /// findRegisterUseOperandIdx() - Returns the operand index that is a use of 83310f9101c4c0df0837414976ad0ef0e86d6771059Jim Grosbach /// the specific register or -1 if it is not found. It further tightens 83476d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng /// the search criteria to a use that kills the register if isKill is true. 8356130f66eaae89f8878590796977678afa8448926Evan Cheng int findRegisterUseOperandIdx(unsigned Reg, bool isKill = false, 836dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const; 8376130f66eaae89f8878590796977678afa8448926Evan Cheng 8386130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterUseOperand - Wrapper for findRegisterUseOperandIdx, it returns 8396130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 8409180c8e3cfd12abd21242768db05072a209ca6e7Evan Cheng MachineOperand *findRegisterUseOperand(unsigned Reg, bool isKill = false, 841dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) { 8426130f66eaae89f8878590796977678afa8448926Evan Cheng int Idx = findRegisterUseOperandIdx(Reg, isKill, TRI); 843dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return (Idx == -1) ? nullptr : &getOperand(Idx); 8446130f66eaae89f8878590796977678afa8448926Evan Cheng } 845108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 8466130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperandIdx() - Returns the operand index that is a def of 847703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman /// the specified register or -1 if it is not found. If isDead is true, defs 8481015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// that are not dead are skipped. If Overlap is true, then it also looks for 8491015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// defs that merely overlap the specified register. If TargetRegisterInfo is 8501015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// non-null, then it also checks if there is a def of a super-register. 8511cf8b0f2a5435d8444b6cc7d4a27eef424398273Jakob Stoklund Olesen /// This may also return a register mask operand when Overlap is true. 8521015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int findRegisterDefOperandIdx(unsigned Reg, 8531015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool isDead = false, bool Overlap = false, 854dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) const; 8556130f66eaae89f8878590796977678afa8448926Evan Cheng 8566130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperand - Wrapper for findRegisterDefOperandIdx, it returns 8576130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 858631bd3cdf39eb099d5d5d279b17b08f119956538Evan Cheng MachineOperand *findRegisterDefOperand(unsigned Reg, bool isDead = false, 859dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *TRI = nullptr) { 8601015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int Idx = findRegisterDefOperandIdx(Reg, isDead, false, TRI); 861dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return (Idx == -1) ? nullptr : &getOperand(Idx); 8626130f66eaae89f8878590796977678afa8448926Evan Cheng } 86319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 864f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// findFirstPredOperandIdx() - Find the index of the first operand in the 865f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// operand list that is used to represent the predicate. It returns -1 if 866f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// none is found. 867f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng int findFirstPredOperandIdx() const; 868108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 8699dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// findInlineAsmFlagIdx() - Find the index of the flag word operand that 8709dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// corresponds to operand OpIdx on an inline asm instruction. Returns -1 if 8719dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// getOperand(OpIdx) does not belong to an inline asm operand group. 8729dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8739dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// If GroupNo is not NULL, it will receive the number of the operand group 8749dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// containing OpIdx. 8759dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8769dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// The flag operand is an immediate that can be decoded with methods like 8779dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// InlineAsm::hasRegClassConstraint(). 8789dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 879dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines int findInlineAsmFlagIdx(unsigned OpIdx, unsigned *GroupNo = nullptr) const; 8809dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen 881f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// getRegClassConstraint - Compute the static register class constraint for 882f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// operand OpIdx. For normal instructions, this is derived from the 883f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// MCInstrDesc. For inline assembly it is derived from the flag words. 884f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 885f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// Returns NULL if the static register classs constraint cannot be 886f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// determined. 887f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 888f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterClass* 889f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen getRegClassConstraint(unsigned OpIdx, 890f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetInstrInfo *TII, 891f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterInfo *TRI) const; 892f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen 89336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Applies the constraints (def/use) implied by this MI on \p Reg to 89436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// the given \p CurRC. 89536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// If \p ExploreBundle is set and MI is part of a bundle, all the 89636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// instructions inside the bundle will be taken into account. In other words, 89736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// this method accumulates all the constrains of the operand of this MI and 89836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// the related bundle if MI is a bundle or inside a bundle. 89936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 90036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// Returns the register class that statisfies both \p CurRC and the 90136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// constraints set by MI. Returns NULL if such a register class does not 90236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// exist. 90336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 90436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre CurRC must not be NULL. 90536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass *getRegClassConstraintEffectForVReg( 90636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned Reg, const TargetRegisterClass *CurRC, 90736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, const TargetRegisterInfo *TRI, 90836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines bool ExploreBundle = false) const; 90936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 91036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Applies the constraints (def/use) implied by the \p OpIdx operand 91136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// to the given \p CurRC. 91236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 91336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// Returns the register class that statisfies both \p CurRC and the 91436b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// constraints set by \p OpIdx MI. Returns NULL if such a register class 91536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// does not exist. 91636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// 91736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre CurRC must not be NULL. 91836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \pre The operand at \p OpIdx must be a register. 91936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass * 92036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines getRegClassConstraintEffect(unsigned OpIdx, const TargetRegisterClass *CurRC, 92136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, 92236b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterInfo *TRI) const; 92336b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 92494083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// tieOperands - Add a tie between the register operands at DefIdx and 92594083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// UseIdx. The tie will cause the register allocator to ensure that the two 92694083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// operands are assigned the same physical register. 92794083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// 92894083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// Tied operands are managed automatically for explicit operands in the 92994083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// MCInstrDesc. This method is for exceptional cases like inline asm. 93094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen void tieOperands(unsigned DefIdx, unsigned UseIdx); 93194083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen 932699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// findTiedOperandIdx - Given the index of a tied register operand, find the 933699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// operand it is tied to. Defs are tied to uses and vice versa. Returns the 934699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// index of the tied operand which must exist. 935699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen unsigned findTiedOperandIdx(unsigned OpIdx) const; 936699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 937d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// isRegTiedToUseOperand - Given the index of a register def operand, 938d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// check if the register def is tied to a source operand, due to either 939d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// two-address elimination or inline assembly constraints. Returns the 940a21bb20f5943f5f4c66d4727784c26007db2470cJim Grosbach /// first tied use operand index by reference if UseOpIdx is not null. 941dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool isRegTiedToUseOperand(unsigned DefOpIdx, 942dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines unsigned *UseOpIdx = nullptr) const { 94399c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(DefOpIdx); 94499c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isDef() || !MO.isTied()) 94599c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 94699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (UseOpIdx) 94799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *UseOpIdx = findTiedOperandIdx(DefOpIdx); 94899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 94999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 95032dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 951a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// isRegTiedToDefOperand - Return true if the use operand of the specified 952cd81d94322a39503e4a3e87b6ee03d4fcb3465fbStephen Hines /// index is tied to a def operand. It also returns the def operand index by 953a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// reference if DefOpIdx is not null. 954dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines bool isRegTiedToDefOperand(unsigned UseOpIdx, 955dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines unsigned *DefOpIdx = nullptr) const { 95699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(UseOpIdx); 95799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || !MO.isTied()) 95899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 95999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (DefOpIdx) 96099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *DefOpIdx = findTiedOperandIdx(UseOpIdx); 96199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 96299c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 963a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 964e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// clearKillInfo - Clears kill flags on all operands. 965e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// 966e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman void clearKillInfo(); 967e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman 9689edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// substituteRegister - Replace all occurrences of FromReg with ToReg:SubIdx, 9699edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// properly composing subreg indices where necessary. 9709edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen void substituteRegister(unsigned FromReg, unsigned ToReg, unsigned SubIdx, 9719edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen const TargetRegisterInfo &RegInfo); 9729edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen 973b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterKilled - We have determined MI kills a register. Look for the 974b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// operand that uses it and mark it as IsKill. If AddIfNotFound is true, 975b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// add a implicit operand if it's not found. Returns true if the operand 976b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// exists / is added. 9776f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterKilled(unsigned IncomingReg, 9786f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 979b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 9808efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 9811a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// clearRegisterKills - Clear all kill flags affecting Reg. If RegInfo is 9821a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// provided, this includes super-register kills. 9831a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen void clearRegisterKills(unsigned Reg, const TargetRegisterInfo *RegInfo); 9841a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen 985b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterDead - We have determined MI defined a register without a use. 986b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// Look for the operand that defines it and mark it as IsDead. If 987b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// AddIfNotFound is true, add a implicit operand if it's not found. Returns 988b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// true if the operand exists / is added. 9894afb5f560d2c3171eda8be6ae64998080dddec0cMatthias Braun bool addRegisterDead(unsigned Reg, const TargetRegisterInfo *RegInfo, 990b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 991b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 9928efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// addRegisterDefined - We have determined MI defines a register. Make sure 9938efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// there is an operand defining Reg. 994dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines void addRegisterDefined(unsigned Reg, 995dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines const TargetRegisterInfo *RegInfo = nullptr); 9968efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 9972a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// setPhysRegsDeadExcept - Mark every physreg used by this instruction as 9982a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// dead except those in the UsedRegs list. 99977180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// 100077180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// On instructions with register mask operands, also add implicit-def 100177180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// operands for all registers in UsedRegs. 1002a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen void setPhysRegsDeadExcept(ArrayRef<unsigned> UsedRegs, 1003db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman const TargetRegisterInfo &TRI); 1004db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman 10059f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// isSafeToMove - Return true if it is safe to move this instruction. If 10069f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// SawStore is set to true, it means that there is a store (or call) between 10079f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// the instruction's location and its intended destination. 1008ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToMove(const TargetInstrInfo *TII, AliasAnalysis *AA, 1009ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool &SawStore) const; 1010b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 1011f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// hasOrderedMemoryRef - Return true if this instruction may have an ordered 1012f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// or volatile memory reference, or if the information describing the memory 1013f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// reference is not available. Return false if it is known to have no 1014f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// ordered or volatile memory references. 1015f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen bool hasOrderedMemoryRef() const; 10163e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 1017e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// isInvariantLoad - Return true if this instruction is loading from a 1018e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// location whose value is invariant across the function. For example, 1019f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman /// loading a value from the constant pool or from the argument area of 1020e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// a function if it does not change. This should only return true of *all* 1021e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// loads the instruction does are invariant (if it does multiple loads). 1022a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool isInvariantLoad(AliasAnalysis *AA) const; 1023e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 1024229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// isConstantValuePHI - If the specified instruction is a PHI that always 1025229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// merges together the same virtual register, return the register, otherwise 1026229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// return 0. 1027229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned isConstantValuePHI() const; 1028229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 1029c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// hasUnmodeledSideEffects - Return true if this instruction has side 1030c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// effects that are not modeled by mayLoad / mayStore, etc. 1031e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// For all instructions, the property is encoded in MCInstrDesc::Flags 1032e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// (see MCInstrDesc::hasUnmodeledSideEffects(). The only exception is 1033c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// INLINEASM instruction, in which case the side effect property is encoded 1034c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// in one of its operands (see InlineAsm::Extra_HasSideEffect). 1035c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// 1036c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool hasUnmodeledSideEffects() const; 1037c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng 1038a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// allDefsAreDead - Return true if all the defs of this instruction are dead. 1039a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// 1040a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng bool allDefsAreDead() const; 1041a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng 1042b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// copyImplicitOps - Copy implicit register operands from specified 1043b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// instruction to this instruction. 1044be06aacaa9a270384599bbfa850b967e9996b9fbJakob Stoklund Olesen void copyImplicitOps(MachineFunction &MF, const MachineInstr *MI); 1045b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng 1046a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // 1047a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // Debugging support 1048fa78fbf446b505767e838f9c188707183c57fc9cChris Lattner // 1049dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines void print(raw_ostream &OS, const TargetMachine *TM = nullptr, 1050c6ada8e5f38168f13830e448f2b9e2d8e3eac72bAndrew Trick bool SkipOpers = false) const; 1051572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner void dump() const; 10522f898d207466bf233b55607e404baca302bc7b5eChris Lattner 1053413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner //===--------------------------------------------------------------------===// 105462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Accessors used to build up machine instructions. 10557ad6be7b01a902f532eebb607306f7b3f4627718Chris Lattner 105656706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add the specified operand to the instruction. If it is an implicit 105756706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// operand, it is added to the end of the operand list. If it is an 105856706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// explicit operand it is added at the end of the explicit operand list 1059108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach /// (before the first implicit operand). 106056706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 106156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MF must be the machine function that was used to allocate this 106256706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instruction. 106356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 106456706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder provides a more convenient interface for creating 106556706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions and adding operands. 106656706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(MachineFunction &MF, const MachineOperand &Op); 1067108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 106856706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add an operand without providing an MF reference. This only works for 106956706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions that are inserted in a basic block. 107056706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 107156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder and the two-argument addOperand(MF, MO) should be 107256706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// preferred. 107356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(const MachineOperand &Op); 1074433cb080bac56b4fac56f7625e07e17b4824ce8aJakob Stoklund Olesen 10755080f4d9919d39b367891dc51e739c571a66036cChris Lattner /// setDesc - Replace the instruction descriptor (thus opcode) of 107667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// the current instruction with a new one. 10773c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 1078e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng void setDesc(const MCInstrDesc &tid) { MCID = &tid; } 10793c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner 108006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// setDebugLoc - Replace current source information with new such. 1081ab160cf371d6148d49b5401a903dd4ce381b2f8cDale Johannesen /// Avoid using this, the constructor argument is preferable. 108206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 108306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen void setDebugLoc(const DebugLoc dl) { debugLoc = dl; } 108406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 10853c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// RemoveOperand - Erase an operand from an instruction, leaving it with one 10863c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// fewer operand than it started with. 10873c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 108862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner void RemoveOperand(unsigned i); 108962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 1090c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// addMemOperand - Add a MachineMemOperand to the machine instruction. 1091c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// This function should be used only occasionally. The setMemRefs function 1092c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// is the primary method for setting up a MachineInstr's MemRefs list. 1093c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void addMemOperand(MachineFunction &MF, MachineMemOperand *MO); 10948e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1095c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// setMemRefs - Assign this MachineInstr's memory reference descriptor 1096c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// list. This does not transfer ownership. 1097c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) { 1098c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 1099b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen NumMemRefs = uint8_t(NewMemRefsEnd - NewMemRefs); 1100b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen assert(NumMemRefs == NewMemRefsEnd - NewMemRefs && "Too many memrefs"); 1101c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 110269de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1103943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattnerprivate: 110462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// getRegInfo - If this instruction is embedded into a MachineFunction, 110562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return the MachineRegisterInfo object for the current function, otherwise 110662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return null. 110762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *getRegInfo(); 1108d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 1109699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// untieRegOperand - Break any tie involving OpIdx. 1110699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen void untieRegOperand(unsigned OpIdx) { 111194083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen MachineOperand &MO = getOperand(OpIdx); 111294083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen if (MO.isReg() && MO.isTied()) { 1113c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen getOperand(findTiedOperandIdx(OpIdx)).TiedTo = 0; 1114c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen MO.TiedTo = 0; 111594083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen } 1116699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen } 1117699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 1118d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// addImplicitDefUseOperands - Add all implicit def and use operands to 1119d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// this instruction. 11209500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen void addImplicitDefUseOperands(MachineFunction &MF); 1121108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 112262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 112362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 112462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands already be on their use lists. 1125ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void RemoveRegOperandsFromUseLists(MachineRegisterInfo&); 1126108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 112762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// AddRegOperandsToUseLists - Add all of the register operands in 112862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 112962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands not be on their use lists yet. 1130ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void AddRegOperandsToUseLists(MachineRegisterInfo&); 113185f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 113285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a 113385f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// bundle. 113485f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasPropertyInBundle(unsigned Mask, QueryType Type) const; 113536b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines 113636b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// \brief Implements the logic of getRegClassConstraintEffectForVReg for the 113736b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// this MI and the given operand index \p OpIdx. 113836b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines /// If the related operand does not constrained Reg, this returns CurRC. 113936b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetRegisterClass *getRegClassConstraintEffectForVRegImpl( 114036b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines unsigned OpIdx, unsigned Reg, const TargetRegisterClass *CurRC, 114136b56886974eae4f9c5ebc96befd3e7bfe5de338Stephen Hines const TargetInstrInfo *TII, const TargetRegisterInfo *TRI) const; 1142a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve}; 114323ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 114405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare 114505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstr* by *value* of the instruction rather than by pointer value. 114605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// The hashing and equality testing functions ignore definitions so this is 114705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// useful for CSE, etc. 114805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Chengstruct MachineInstrExpressionTrait : DenseMapInfo<MachineInstr*> { 114905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getEmptyKey() { 1150dce4a407a24b04eebc6a376f8e62b41aaa7b071fStephen Hines return nullptr; 115105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 115205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 115305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getTombstoneKey() { 115405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return reinterpret_cast<MachineInstr*>(-1); 115505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 115605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 115767eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng static unsigned getHashValue(const MachineInstr* const &MI); 115805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 115905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static bool isEqual(const MachineInstr* const &LHS, 116005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng const MachineInstr* const &RHS) { 116105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng if (RHS == getEmptyKey() || RHS == getTombstoneKey() || 116205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng LHS == getEmptyKey() || LHS == getTombstoneKey()) 116305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS == RHS; 116405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS->isIdenticalTo(RHS, MachineInstr::IgnoreVRegDefs); 116505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 116605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng}; 116705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 1168b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 1169593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve// Debugging Support 1170593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve 1171cb3718832375a581c5ea23f15918f3ea447a446cOwen Andersoninline raw_ostream& operator<<(raw_ostream &OS, const MachineInstr &MI) { 1172cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson MI.print(OS); 1173cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson return OS; 1174cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson} 1175cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson 1176d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 1177d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 117823ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#endif 1179