MachineInstr.h revision b56606274d43c7a3e01b18a08d1115fbf2889996
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" 25255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/CodeGen/MachineOperand.h" 260b8c9a80f20772c3793201ab5b251d3520b9cea3Chandler Carruth#include "llvm/IR/InlineAsm.h" 27255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/MC/MCInstrDesc.h" 28f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen#include "llvm/Support/ArrayRecycler.h" 291e86a66b00b94adc4ad6977ef6b47c516ac62cecDevang Patel#include "llvm/Support/DebugLoc.h" 30255f89faee13dc491cb64fbeae3c763e7e2ea4e6Chandler Carruth#include "llvm/Target/TargetOpcodes.h" 311baa88e3de8947b02d9ef4caa73e5860f048ec6eDan Gohman#include <vector> 32be583b914d8156b99d3da264d5adca37fee8dbc9John Criswell 33d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 34d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 3518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesentemplate <typename T> class SmallVectorImpl; 36e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanclass AliasAnalysis; 37b27087f5aa574f875598f4a309b7dd687c64a455Evan Chengclass TargetInstrInfo; 38f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesenclass TargetRegisterClass; 396f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohmanclass TargetRegisterInfo; 408e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanclass MachineFunction; 41c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanclass MachineMemOperand; 42c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 43b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 448b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// MachineInstr - Representation of each machine instruction. 458b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// 4684be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// This class isn't a POD type, but it must have a trivial destructor. When a 4784be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// MachineFunction is deleted, all the contained MachineInstrs are deallocated 4884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// without having their destructor called. 4984be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen/// 50fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineInstr : public ilist_node<MachineInstr> { 51c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanpublic: 52c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman typedef MachineMemOperand **mmo_iterator; 53c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 5445282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// Flags to specify different kinds of comments to output in 5545282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// assembly code. These flags carry semantic information not 5645282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// otherwise easily derivable from the IR text. 5745282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// 5845282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner enum CommentFlag { 5945282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner ReloadReuse = 0x1 6045282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner }; 616dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov enum MIFlag { 637c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng NoFlags = 0, 647c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng FrameSetup = 1 << 0, // Instruction is used as a part of 656dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // function frame setup code. 66fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledPred = 1 << 1, // Instruction has bundled predecessors. 67fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen BundledSucc = 1 << 2 // Instruction has bundled successors. 686dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov }; 69c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanprivate: 70e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc *MCID; // Instruction descriptor. 71f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineBasicBlock *Parent; // Pointer to the owning basic block. 72f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen 73f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen // Operands are allocated by an ArrayRecycler. 74f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen MachineOperand *Operands; // Pointer to the first operand. 75f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned NumOperands; // Number of operands on instruction. 76f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef ArrayRecycler<MachineOperand>::Capacity OperandCapacity; 77f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen OperandCapacity CapOperands; // Capacity of the Operands array. 789a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng 796dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t Flags; // Various bits of additional 806dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // information about machine 816dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // instruction. 826dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 836647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t AsmPrinterFlags; // Various bits of information used by 841251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // the AsmPrinter to emit helpful 851251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // comments. This is *not* semantic 861251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information. Do not use this for 871251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // anything other than to convey comment 881251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information to AsmPrinter. 891251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 90b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen uint8_t NumMemRefs; // Information on memory references. 91861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator MemRefs; 92861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer 9306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen DebugLoc debugLoc; // Source line information. 94c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke 95001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper MachineInstr(const MachineInstr&) LLVM_DELETED_FUNCTION; 96001d3dc976d7cda8a3dd8c7fd4020b0b96033f4eCraig Topper void operator=(const MachineInstr&) LLVM_DELETED_FUNCTION; 9784be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen // Use MachineFunction::DeleteMachineInstr() instead. 9884be3d5a73313eb19f2f9e0512153cd2e6f46c54Jakob Stoklund Olesen ~MachineInstr() LLVM_DELETED_FUNCTION; 99c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 100c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos // Intrusive list support 101fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineInstr>; 102fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineBasicBlock>; 103f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner void setParent(MachineBasicBlock *P) { Parent = P; } 1048e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1058e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr ctor - This constructor creates a copy of the given 1068e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr in the given MachineFunction. 1078e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman MachineInstr(MachineFunction &, const MachineInstr &); 1088e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 10906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// MachineInstr ctor - This constructor create a MachineInstr and add the 11006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// implicit operands. It reserves space for number of operands specified by 111e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// MCInstrDesc. An explicit DebugLoc is supplied. 1129500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen MachineInstr(MachineFunction&, const MCInstrDesc &MCID, 1139500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen const DebugLoc dl, bool NoImp = false); 11406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1158e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // MachineInstrs are pool-allocated and owned by MachineFunction. 1168e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman friend class MachineFunction; 1178e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1188e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanpublic: 119f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner const MachineBasicBlock* getParent() const { return Parent; } 120f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner MachineBasicBlock* getParent() { return Parent; } 12106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1221251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlags - Return the asm printer flags bitvector. 1231251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 1246647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t getAsmPrinterFlags() const { return AsmPrinterFlags; } 1251251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 126cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// clearAsmPrinterFlags - clear the AsmPrinter bitvector 127cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 128cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner void clearAsmPrinterFlags() { AsmPrinterFlags = 0; } 129108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 1301251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlag - Return whether an AsmPrinter flag is set. 1311251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13245282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner bool getAsmPrinterFlag(CommentFlag Flag) const { 1331251443929a256c833717e1030c368d3b6e4cb7cDavid Greene return AsmPrinterFlags & Flag; 1341251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 1351251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 1361251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// setAsmPrinterFlag - Set a flag for the AsmPrinter. 1371251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 13845282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner void setAsmPrinterFlag(CommentFlag Flag) { 1396dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov AsmPrinterFlags |= (uint8_t)Flag; 1406dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1416dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1427c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// clearAsmPrinterFlag - clear specific AsmPrinter flags 1437c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1447c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng void clearAsmPrinterFlag(CommentFlag Flag) { 1457c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng AsmPrinterFlags &= ~Flag; 1467c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 1477c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 1486dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlags - Return the MI flags bitvector. 1496dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t getFlags() const { 1506dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags; 1516dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1526dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1536dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlag - Return whether an MI flag is set. 1546dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov bool getFlag(MIFlag Flag) const { 1556dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags & Flag; 1566dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1576dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1586dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// setFlag - Set a MI flag. 1596dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlag(MIFlag Flag) { 1606dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov Flags |= (uint8_t)Flag; 1616dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlags(unsigned flags) { 164bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen // Filter out the automatically maintained flags. 165bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen unsigned Mask = BundledPred | BundledSucc; 166bd7b36e780f99b808f8e334e26f3dae1bc7e8175Jakob Stoklund Olesen Flags = (Flags & Mask) | (flags & ~Mask); 1671251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 168108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 169ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// clearFlag - Clear a MI flag. 170ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng void clearFlag(MIFlag Flag) { 171ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng Flags &= ~((uint8_t)Flag); 172ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 173ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 1747c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// isInsideBundle - Return true if MI is in a bundle (but not the first MI 1757c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// in a bundle). 176cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 1777c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// A bundle looks like this before it's finalized: 1787c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1797c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI | 1807c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1817c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1827c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 183b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1847c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1857c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1867c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 187b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1887c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1897c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// In this case, the first MI starts a bundle but is not inside a bundle, the 1907c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// next 2 MIs are considered "inside" the bundle. 1917c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1927c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// After a bundle is finalized, it looks like this: 1937c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1947c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | Bundle | 1957c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1967c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1977c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1987c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI * | 1997c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2007c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2017c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 202b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2037c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2047c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2057c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 206b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2077c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2087c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// The first instruction has the special opcode "BUNDLE". It's not "inside" 2097c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// a bundle, but the next three MIs are. 2107c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng bool isInsideBundle() const { 211fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen return getFlag(BundledPred); 212cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner } 2131251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 21499a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// isBundled - Return true if this instruction part of a bundle. This is true 21599a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// if either itself or its following instruction is marked "InsideBundle". 2162e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen bool isBundled() const { 2172e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen return isBundledWithPred() || isBundledWithSucc(); 2182e4b639790a166e55a0bf14fac54ca6ce583e459Jakob Stoklund Olesen } 21999a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick 220fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 221fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// first instruction in the bundle. 222fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithPred() const { return getFlag(BundledPred); } 223fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 224fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Return true if this instruction is part of a bundle, and it is not the 225fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// last instruction in the bundle. 226fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen bool isBundledWithSucc() const { return getFlag(BundledSucc); } 227fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 228fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its predecessor. This can be an unbundled 229fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the first instruction in a bundle. 230fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithPred(); 231fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 232fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Bundle this instruction with its successor. This can be an unbundled 233fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// instruction, or it can be the last instruction in a bundle. 234fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void bundleWithSucc(); 235fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 236fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle above this instruction. 237fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromPred(); 238fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 239fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen /// Break bundle below this instruction. 240fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen void unbundleFromSucc(); 241fad649a5b173f8cfdbbbbde8649ed66afd1129c1Jakob Stoklund Olesen 24206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// getDebugLoc - Returns the debug location id of this MachineInstr. 24306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 244d5fb7906130989a579d1bfe4490b414331e94feeChris Lattner DebugLoc getDebugLoc() const { return debugLoc; } 2456dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 246d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// emitError - Emit an error referring to the source location of this 247d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// instruction. This should only be used for inline assembly that is somehow 248d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// impossible to compile. Other errors should have been handled much 249d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// earlier. 250d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 251d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// If this method returns, the caller should try to recover from the error. 252d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 253d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen void emitError(StringRef Msg) const; 254d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen 25569244300b8a0112efb44b6273ecea4ca6264b8cfChris Lattner /// getDesc - Returns the target instruction descriptor of this 25667f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// MachineInstr. 257e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc &getDesc() const { return *MCID; } 258ab8672c8bb83e722b856eac67863542ea7e0cbb2Alkis Evlogimenos 259c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke /// getOpcode - Returns the opcode of this MachineInstr. 260cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 261e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng int getOpcode() const { return MCID->Opcode; } 2629f495b54fa94dba4e0be59ba9736c7cf18d996d9Vikram S. Adve 263cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// Access to explicit operands of the instruction. 264cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 265f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen unsigned getNumOperands() const { return NumOperands; } 266ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 267572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner const MachineOperand& getOperand(unsigned i) const { 268a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 269943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 270572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 271572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner MachineOperand& getOperand(unsigned i) { 272a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 273943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 274572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 2756d6c3f86186333037f2fd3fb001e8b2998c080d9Chris Lattner 27619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// getNumExplicitOperands - Returns the number of non-implicit operands. 27719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// 27819e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng unsigned getNumExplicitOperands() const; 279ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 280ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner /// iterator/begin/end - Iterate over all operands of a machine instruction. 281f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef MachineOperand *mop_iterator; 282f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen typedef const MachineOperand *const_mop_iterator; 283ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 284f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_begin() { return Operands; } 285f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen mop_iterator operands_end() { return Operands + NumOperands; } 286ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 287f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_begin() const { return Operands; } 288f1d015f3429f611c423f943c75f86e6823810dc3Jakob Stoklund Olesen const_mop_iterator operands_end() const { return Operands + NumOperands; } 289ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 29069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman /// Access to memory operands of the instruction 291c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator memoperands_begin() const { return MemRefs; } 292861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator memoperands_end() const { return MemRefs + NumMemRefs; } 293861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer bool memoperands_empty() const { return NumMemRefs == 0; } 29469de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 295cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// hasOneMemOperand - Return true if this instruction has exactly one 296cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// MachineMemOperand. 297cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman bool hasOneMemOperand() const { 298861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer return NumMemRefs == 1; 299cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman } 300cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman 3015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// API for querying MachineInstr properties. They are the same as MCInstrDesc 3025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// queries but they are bundle aware. 3035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 30443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng enum QueryType { 30543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng IgnoreBundle, // Ignore bundles 30643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AnyInBundle, // Return true if any instruction in bundle has property 30743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AllInBundle // Return true if all instructions in bundle have property 30843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng }; 30943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng 3105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasProperty - Return true if the instruction (or in the case of a bundle, 3115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the instructions inside the bundle) has the specified property. 3125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The first argument is the property being queried. 3135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The second argument indicates whether the query should look inside 3145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction bundles. 31585f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const { 3164aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // Inline the fast path for unbundled or bundle-internal instructions. 3174aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen if (Type == IgnoreBundle || !isBundled() || isBundledWithPred()) 31885f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return getDesc().getFlags() & (1 << MCFlag); 31985f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 3204aebce83212d7271454c8767085645fe11054b44Jakob Stoklund Olesen // If this is the first instruction in a bundle, take the slow path. 32185f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return hasPropertyInBundle(1 << MCFlag, Type); 32285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer } 3235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isVariadic - Return true if this instruction can have a variable number of 3255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands. In this case, the variable operands will be after the normal 3265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands but before the implicit definitions and uses (if any are 3275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// present). 32843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isVariadic(QueryType Type = IgnoreBundle) const { 32943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Variadic, Type); 3305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasOptionalDef - Set if this instruction has an optional definition, e.g. 3335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// ARM instructions which can set condition code if 's' bit is set. 33443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasOptionalDef(QueryType Type = IgnoreBundle) const { 33543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasOptionalDef, Type); 3365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isPseudo - Return true if this is a pseudo instruction that doesn't 3395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// correspond to a real machine instruction. 3407c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 34143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPseudo(QueryType Type = IgnoreBundle) const { 34243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Pseudo, Type); 3435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 34543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isReturn(QueryType Type = AnyInBundle) const { 34643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Return, Type); 3475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 34943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCall(QueryType Type = AnyInBundle) const { 35043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Call, Type); 3515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBarrier - Returns true if the specified instruction stops control flow 3545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// from executing the instruction immediately following it. Examples include 3555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// unconditional branches and return instructions. 35643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBarrier(QueryType Type = AnyInBundle) const { 35743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Barrier, Type); 3585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3597c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isTerminator - Returns true if this instruction part of the terminator for 3615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// a basic block. Typically this is things like return and branch 3625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions. 3635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 3645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Various passes use this to insert code into the bottom of a basic block, 3655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// but before control flow occurs. 36643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isTerminator(QueryType Type = AnyInBundle) const { 36743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Terminator, Type); 3687c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 3697c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBranch - Returns true if this is a conditional, unconditional, or 3715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// indirect branch. Predicates below can be used to discriminate between 3725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// these cases, and the TargetInstrInfo::AnalyzeBranch method can be used to 3735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// get more information. 37443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBranch(QueryType Type = AnyInBundle) const { 37543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Branch, Type); 3765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isIndirectBranch - Return true if this is an indirect branch, such as a 3795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// branch through a register. 38043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isIndirectBranch(QueryType Type = AnyInBundle) const { 38143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::IndirectBranch, Type); 3825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3835a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConditionalBranch - Return true if this is a branch which may fall 3855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// through to the next instruction or may transfer control flow to some other 3865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// block. The TargetInstrInfo::AnalyzeBranch method can be used to get more 3875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// information about this branch. 38843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConditionalBranch(QueryType Type = AnyInBundle) const { 38943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & !isBarrier(Type) & !isIndirectBranch(Type); 3905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isUnconditionalBranch - Return true if this is a branch which always 3935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transfers control flow to some other block. The 3945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::AnalyzeBranch method can be used to get more information 3955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// about this branch. 39643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isUnconditionalBranch(QueryType Type = AnyInBundle) const { 39743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & isBarrier(Type) & !isIndirectBranch(Type); 3985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // isPredicable - Return true if this instruction has a predicate operand that 4015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // controls execution. It may be set to 'always', or may be set to other 4025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// values. There are various methods in TargetInstrInfo that can be used to 4035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// control and modify the predicate in this instruction. 40443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPredicable(QueryType Type = AllInBundle) const { 4055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // If it's a bundle than all bundled instructions must be predicable for this 4065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // to return true. 40743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Predicable, Type); 4085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCompare - Return true if this instruction is a comparison. 41143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCompare(QueryType Type = IgnoreBundle) const { 41243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Compare, Type); 4135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isMoveImmediate - Return true if this instruction is a move immediate 4165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// (including conditional moves) instruction. 41743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isMoveImmediate(QueryType Type = IgnoreBundle) const { 41843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MoveImm, Type); 4195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4215a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBitcast - Return true if this instruction is a bitcast instruction. 4225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 42343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBitcast(QueryType Type = IgnoreBundle) const { 42443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Bitcast, Type); 4255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 427f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// isSelect - Return true if this instruction is a select instruction. 428f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// 429f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen bool isSelect(QueryType Type = IgnoreBundle) const { 430f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen return hasProperty(MCID::Select, Type); 431f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen } 432f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen 4335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isNotDuplicable - Return true if this instruction cannot be safely 4345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// duplicated. For example, if the instruction has a unique labels attached 4355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// to it, duplicating it would cause multiple definition errors. 43643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isNotDuplicable(QueryType Type = AnyInBundle) const { 43743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::NotDuplicable, Type); 4385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasDelaySlot - Returns true if the specified instruction has a delay slot 4415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which must be filled by the code generator. 44243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasDelaySlot(QueryType Type = AnyInBundle) const { 44343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::DelaySlot, Type); 4445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// canFoldAsLoad - Return true for instructions that can be folded as 4475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// memory operands in other instructions. The most common use for this 4485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is instructions that are simple loads from memory that don't modify 4495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the loaded value in any way, but it can also be used for instructions 4505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// that can be expressed as constant-pool loads, such as V_SETALLONES 4515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// on x86, to allow them to be folded when it is beneficial. 4525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// This should only be set on instructions that return a value in their 4535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// only virtual register definition. 45443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool canFoldAsLoad(QueryType Type = IgnoreBundle) const { 45543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::FoldableAsLoad, Type); 4565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Side Effect Analysis 4605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayLoad - Return true if this instruction could possibly read memory. 4635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple load 4645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may load a value and modify it, for example. 46543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayLoad(QueryType Type = AnyInBundle) const { 466daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 467daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 468daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayLoad) 469daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 470daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 471daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayLoad, Type); 4725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayStore - Return true if this instruction could possibly modify memory. 4765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple store 4775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may store a modified value based on their operands, or 4785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// may not actually modify anything, for example. 47943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayStore(QueryType Type = AnyInBundle) const { 480daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (isInlineAsm()) { 481daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier unsigned ExtraInfo = getOperand(InlineAsm::MIOp_ExtraInfo).getImm(); 482daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier if (ExtraInfo & InlineAsm::Extra_MayStore) 483daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return true; 484daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier } 485daeec8fad3a3038247df1e5081b74454e7ee9315Chad Rosier return hasProperty(MCID::MayStore, Type); 4865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Flags that indicate whether an instruction can be modified by a method. 4905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCommutable - Return true if this may be a 2- or 3-address 4935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (of the form "X = op Y, Z, ..."), which produces the same 4945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// result if Y and Z are exchanged. If this flag is set, then the 4955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::commuteInstruction method may be used to hack on the 4965a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction. 4975a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 4985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Note that this flag may be set on instructions that are only commutable 4995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// sometimes. In these cases, the call to commuteInstruction will fail. 5005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Also note that some instructions require non-trivial modification to 5015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// commute them. 50243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCommutable(QueryType Type = IgnoreBundle) const { 50343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Commutable, Type); 5045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConvertibleTo3Addr - Return true if this is a 2-address instruction 5075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which can be changed into a 3-address instruction if needed. Doing this 5085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transformation can be profitable in the register allocator, because it 5095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that the instruction can use a 2-address form if possible, but 5105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// degrade into a less efficient form if the source and dest register cannot 5115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// be assigned to the same register. For example, this allows the x86 5125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// backend to turn a "shl reg, 3" instruction into an LEA instruction, which 5135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is the same speed as the shift but has bigger code size. 5145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this returns true, then the target must implement the 5165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::convertToThreeAddress method for this instruction, which 5175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is allowed to fail if the transformation isn't valid for this specific 5185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (e.g. shl reg, 4 on x86). 5195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 52043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConvertibleTo3Addr(QueryType Type = IgnoreBundle) const { 52143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ConvertibleTo3Addr, Type); 5225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// usesCustomInsertionHook - Return true if this instruction requires 5255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// custom insertion support when the DAG scheduler is inserting it into a 5265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// machine basic block. If this is true for the instruction, it basically 5275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that it is a pseudo instruction used at SelectionDAG time that is 5285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// expanded out into magic code by the target when MachineInstrs are formed. 5295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this is true, the TargetLoweringInfo::InsertAtEndOfBasicBlock method 5315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is used to insert this into the MachineBasicBlock. 53243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool usesCustomInsertionHook(QueryType Type = IgnoreBundle) const { 53343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::UsesCustomInserter, Type); 5345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasPostISelHook - Return true if this instruction requires *adjustment* 5375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// after instruction selection by calling a target hook. For example, this 5385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// can be used to fill in ARM 's' optional operand depending on whether 5395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the conditional flag register is used. 54043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasPostISelHook(QueryType Type = IgnoreBundle) const { 54143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasPostISelHook, Type); 5425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isRematerializable - Returns true if this instruction is a candidate for 5455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// remat. This flag is deprecated, please don't use it anymore. If this 5465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// flag is set, the isReallyTriviallyReMaterializable() method is called to 5475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// verify the instruction is really rematable. 54843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isRematerializable(QueryType Type = AllInBundle) const { 5495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // It's only possible to re-mat a bundle if all bundled instructions are 5505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // re-materializable. 55143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Rematerializable, Type); 5525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isAsCheapAsAMove - Returns true if this instruction has the same cost (or 5555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// less) than a move instruction. This is useful during certain types of 5565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// optimizations (e.g., remat during two-address conversion or machine licm) 5575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// where we would like to remat or hoist the instruction, but not if it costs 5585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// more than moving the instruction into the appropriate register. Note, we 5595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// are not marking copies from and to the same register class with this flag. 56043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isAsCheapAsAMove(QueryType Type = AllInBundle) const { 5615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Only returns true for a bundle if all bundled instructions are cheap. 5625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // FIXME: This probably requires a target hook. 56343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::CheapAsAMove, Type); 5645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraSrcRegAllocReq - Returns true if this instruction source operands 5675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::STRD's two source registers must be an 5695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::STM registers have to be in ascending order. 5705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for sources of instructions with this flag. 57243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraSrcRegAllocReq(QueryType Type = AnyInBundle) const { 57343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraSrcRegAllocReq, Type); 5745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraDefRegAllocReq - Returns true if this instruction def operands 5775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::LDRD's two def registers must be an 5795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::LDM registers have to be in ascending order. 5805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for definitions of instructions with this flag. 58243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraDefRegAllocReq(QueryType Type = AnyInBundle) const { 58343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraDefRegAllocReq, Type); 5845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 587506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng enum MICheckType { 588506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng CheckDefs, // Check all operands for equality 589cbc988be22bc9411d95215c8b7251b5f85710674Evan Cheng CheckKillDead, // Check all operands including kill / dead markers 590506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreDefs, // Ignore all definitions 591506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreVRegDefs // Ignore virtual register definitions 592506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng }; 593506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng 594fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// isIdenticalTo - Return true if this instruction is identical to (same 595fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// opcode and same operands as) the specified instruction. 596506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng bool isIdenticalTo(const MachineInstr *Other, 597506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng MICheckType Check = CheckDefs) const; 598a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve 5999f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block, and return it without 6009f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6019f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6029f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used on bundled instructions, use 6039f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// removeFromBundle() to remove individual instructions from a bundle. 6046b560918426182d2b46b899d609911d49f6739f7Chris Lattner MachineInstr *removeFromParent(); 605108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 6069f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink this instruction from its basic block and return it without 6079f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// deleting it. 6089f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6099f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6109f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6119f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen MachineInstr *removeFromBundle(); 6129f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 6139f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' from the containing basic block and delete it. 6149f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6159f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If this instruction is the header of a bundle, the whole bundle is erased. 6169f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// This function can not be used for instructions inside a bundle, use 6179f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// eraseFromBundle() to erase individual bundled instructions. 6188e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman void eraseFromParent(); 619466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 6209f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// Unlink 'this' form its basic block and delete it. 6219f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// 6229f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// If the instruction is part of a bundle, the other instructions in the 6239f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen /// bundle remain bundled. 6249f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen void eraseFromBundle(); 6259f4692d2953b47e9037ccfe5709a6e75de3911d4Jakob Stoklund Olesen 6264406604047423576e36657c7ede266ca42e79642Dan Gohman /// isLabel - Returns true if the MachineInstr represents a label. 6274406604047423576e36657c7ede266ca42e79642Dan Gohman /// 628518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isLabel() const { 6297431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling return getOpcode() == TargetOpcode::PROLOG_LABEL || 630518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner getOpcode() == TargetOpcode::EH_LABEL || 631518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner getOpcode() == TargetOpcode::GC_LABEL; 632518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 633108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 6347431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling bool isPrologLabel() const { 6357431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling return getOpcode() == TargetOpcode::PROLOG_LABEL; 6367431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling } 637518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isEHLabel() const { return getOpcode() == TargetOpcode::EH_LABEL; } 638518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isGCLabel() const { return getOpcode() == TargetOpcode::GC_LABEL; } 639518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isDebugValue() const { return getOpcode() == TargetOpcode::DBG_VALUE; } 640108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 641518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isPHI() const { return getOpcode() == TargetOpcode::PHI; } 642518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isKill() const { return getOpcode() == TargetOpcode::KILL; } 643518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isImplicitDef() const { return getOpcode()==TargetOpcode::IMPLICIT_DEF; } 644518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInlineAsm() const { return getOpcode() == TargetOpcode::INLINEASM; } 645b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier bool isMSInlineAsm() const { 646b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier return getOpcode() == TargetOpcode::INLINEASM && getInlineAsmDialect(); 647b56606274d43c7a3e01b18a08d1115fbf2889996Chad Rosier } 648c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool isStackAligningInlineAsm() const; 649576cd11ab8035d4240f7e6ea8d7c6c2e45154f86Chad Rosier InlineAsm::AsmDialect getInlineAsmDialect() const; 650518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInsertSubreg() const { 651518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::INSERT_SUBREG; 652518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 653518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isSubregToReg() const { 654518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::SUBREG_TO_REG; 655518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 6563d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng bool isRegSequence() const { 6573d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng return getOpcode() == TargetOpcode::REG_SEQUENCE; 6583d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng } 659ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng bool isBundle() const { 660ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng return getOpcode() == TargetOpcode::BUNDLE; 661ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 662a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen bool isCopy() const { 663a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen return getOpcode() == TargetOpcode::COPY; 664a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen } 665cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola bool isFullCopy() const { 666cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg(); 667cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola } 668a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen 669273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// isCopyLike - Return true if the instruction behaves like a copy. 670273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// This does not include native copy instructions. 671273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen bool isCopyLike() const { 6720bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() || isSubregToReg(); 6730bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen } 6740bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen 6750bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen /// isIdentityCopy - Return true is the instruction is an identity copy. 6760bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen bool isIdentityCopy() const { 6770bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() && getOperand(0).getReg() == getOperand(1).getReg() && 6780bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen getOperand(0).getSubReg() == getOperand(1).getSubReg(); 679273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen } 680273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen 6813f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// isTransient - Return true if this is a transient instruction that is 6823f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// either very likely to be eliminated during register allocation (such as 6833f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// copy-like instructions), or if this instruction doesn't have an 6843f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// execution-time cost. 6853f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen bool isTransient() const { 6863f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen switch(getOpcode()) { 6873f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen default: return false; 6883f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Copy-like instructions are usually eliminated during register allocation. 6893f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PHI: 6903f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::COPY: 6913f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::INSERT_SUBREG: 6923f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::SUBREG_TO_REG: 6933f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::REG_SEQUENCE: 6943f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Pseudo-instructions that don't produce any real output. 6953f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::IMPLICIT_DEF: 6963f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::KILL: 6973f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PROLOG_LABEL: 6983f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::EH_LABEL: 6993f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::GC_LABEL: 7003f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::DBG_VALUE: 7013f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen return true; 7023f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7033f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 7043f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen 70525377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// Return the number of instructions inside the MI bundle, excluding the 70625377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// bundle header. 70725377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// 70825377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// This is the number of instructions that MachineBasicBlock::iterator 70925377c8c6dafd094f17833f2c37daff0b77a16fcJakob Stoklund Olesen /// skips, 0 for unbundled instructions. 710ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng unsigned getBundleSize() const; 711ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 7126130f66eaae89f8878590796977678afa8448926Evan Cheng /// readsRegister - Return true if the MachineInstr reads the specified 7136130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there 7146130f66eaae89f8878590796977678afa8448926Evan Cheng /// is a read of a super-register. 7157ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// This does not count partial redefines of virtual registers as reads: 7167ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// %reg1024:6 = OP. 7176130f66eaae89f8878590796977678afa8448926Evan Cheng bool readsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 7186130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, false, TRI) != -1; 7196130f66eaae89f8878590796977678afa8448926Evan Cheng } 7206130f66eaae89f8878590796977678afa8448926Evan Cheng 7217ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// readsVirtualRegister - Return true if the MachineInstr reads the specified 7227ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// virtual register. Take into account that a partial define is a 7237ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// read-modify-write operation. 72418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool readsVirtualRegister(unsigned Reg) const { 72518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen return readsWritesVirtualRegister(Reg).first; 72618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen } 72718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen 72818b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// readsWritesVirtualRegister - Return a pair of bools (reads, writes) 72918b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// indicating if this instruction reads or writes Reg. This also considers 73018b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// partial defines. 73118b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// If Ops is not null, all operand indices for Reg are added. 73218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen std::pair<bool,bool> readsWritesVirtualRegister(unsigned Reg, 73318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen SmallVectorImpl<unsigned> *Ops = 0) const; 7347ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 7356130f66eaae89f8878590796977678afa8448926Evan Cheng /// killsRegister - Return true if the MachineInstr kills the specified 7366130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there is 7376130f66eaae89f8878590796977678afa8448926Evan Cheng /// a kill of a super-register. 7386130f66eaae89f8878590796977678afa8448926Evan Cheng bool killsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 7396130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, true, TRI) != -1; 7406130f66eaae89f8878590796977678afa8448926Evan Cheng } 7416130f66eaae89f8878590796977678afa8448926Evan Cheng 7421015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// definesRegister - Return true if the MachineInstr fully defines the 7436130f66eaae89f8878590796977678afa8448926Evan Cheng /// specified register. If TargetRegisterInfo is passed, then it also checks 7446130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a def of a super-register. 7451015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7461015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool definesRegister(unsigned Reg, const TargetRegisterInfo *TRI=NULL) const { 7471015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, false, TRI) != -1; 7481015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng } 7491015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng 7501015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// modifiesRegister - Return true if the MachineInstr modifies (fully define 7511015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// or partially define) the specified register. 7521015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7531015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool modifiesRegister(unsigned Reg, const TargetRegisterInfo *TRI) const { 7541015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, true, TRI) != -1; 7556130f66eaae89f8878590796977678afa8448926Evan Cheng } 7566130f66eaae89f8878590796977678afa8448926Evan Cheng 7576130f66eaae89f8878590796977678afa8448926Evan Cheng /// registerDefIsDead - Returns true if the register is dead in this machine 7586130f66eaae89f8878590796977678afa8448926Evan Cheng /// instruction. If TargetRegisterInfo is passed, then it also checks 7596130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a dead def of a super-register. 7606130f66eaae89f8878590796977678afa8448926Evan Cheng bool registerDefIsDead(unsigned Reg, 7616130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const { 7621015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, true, false, TRI) != -1; 7636130f66eaae89f8878590796977678afa8448926Evan Cheng } 7646130f66eaae89f8878590796977678afa8448926Evan Cheng 765faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng /// findRegisterUseOperandIdx() - Returns the operand index that is a use of 76610f9101c4c0df0837414976ad0ef0e86d6771059Jim Grosbach /// the specific register or -1 if it is not found. It further tightens 76776d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng /// the search criteria to a use that kills the register if isKill is true. 7686130f66eaae89f8878590796977678afa8448926Evan Cheng int findRegisterUseOperandIdx(unsigned Reg, bool isKill = false, 7696130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 7706130f66eaae89f8878590796977678afa8448926Evan Cheng 7716130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterUseOperand - Wrapper for findRegisterUseOperandIdx, it returns 7726130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 7739180c8e3cfd12abd21242768db05072a209ca6e7Evan Cheng MachineOperand *findRegisterUseOperand(unsigned Reg, bool isKill = false, 7746130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 7756130f66eaae89f8878590796977678afa8448926Evan Cheng int Idx = findRegisterUseOperandIdx(Reg, isKill, TRI); 7766130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 7776130f66eaae89f8878590796977678afa8448926Evan Cheng } 778108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 7796130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperandIdx() - Returns the operand index that is a def of 780703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman /// the specified register or -1 if it is not found. If isDead is true, defs 7811015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// that are not dead are skipped. If Overlap is true, then it also looks for 7821015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// defs that merely overlap the specified register. If TargetRegisterInfo is 7831015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// non-null, then it also checks if there is a def of a super-register. 7841cf8b0f2a5435d8444b6cc7d4a27eef424398273Jakob Stoklund Olesen /// This may also return a register mask operand when Overlap is true. 7851015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int findRegisterDefOperandIdx(unsigned Reg, 7861015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool isDead = false, bool Overlap = false, 7876130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 7886130f66eaae89f8878590796977678afa8448926Evan Cheng 7896130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperand - Wrapper for findRegisterDefOperandIdx, it returns 7906130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 791631bd3cdf39eb099d5d5d279b17b08f119956538Evan Cheng MachineOperand *findRegisterDefOperand(unsigned Reg, bool isDead = false, 7926130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 7931015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int Idx = findRegisterDefOperandIdx(Reg, isDead, false, TRI); 7946130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 7956130f66eaae89f8878590796977678afa8448926Evan Cheng } 79619e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 797f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// findFirstPredOperandIdx() - Find the index of the first operand in the 798f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// operand list that is used to represent the predicate. It returns -1 if 799f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// none is found. 800f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng int findFirstPredOperandIdx() const; 801108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 8029dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// findInlineAsmFlagIdx() - Find the index of the flag word operand that 8039dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// corresponds to operand OpIdx on an inline asm instruction. Returns -1 if 8049dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// getOperand(OpIdx) does not belong to an inline asm operand group. 8059dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8069dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// If GroupNo is not NULL, it will receive the number of the operand group 8079dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// containing OpIdx. 8089dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8099dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// The flag operand is an immediate that can be decoded with methods like 8109dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// InlineAsm::hasRegClassConstraint(). 8119dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 8129dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen int findInlineAsmFlagIdx(unsigned OpIdx, unsigned *GroupNo = 0) const; 8139dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen 814f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// getRegClassConstraint - Compute the static register class constraint for 815f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// operand OpIdx. For normal instructions, this is derived from the 816f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// MCInstrDesc. For inline assembly it is derived from the flag words. 817f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 818f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// Returns NULL if the static register classs constraint cannot be 819f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// determined. 820f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 821f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterClass* 822f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen getRegClassConstraint(unsigned OpIdx, 823f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetInstrInfo *TII, 824f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterInfo *TRI) const; 825f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen 82694083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// tieOperands - Add a tie between the register operands at DefIdx and 82794083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// UseIdx. The tie will cause the register allocator to ensure that the two 82894083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// operands are assigned the same physical register. 82994083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// 83094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// Tied operands are managed automatically for explicit operands in the 83194083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// MCInstrDesc. This method is for exceptional cases like inline asm. 83294083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen void tieOperands(unsigned DefIdx, unsigned UseIdx); 83394083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen 834699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// findTiedOperandIdx - Given the index of a tied register operand, find the 835699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// operand it is tied to. Defs are tied to uses and vice versa. Returns the 836699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// index of the tied operand which must exist. 837699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen unsigned findTiedOperandIdx(unsigned OpIdx) const; 838699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 839d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// isRegTiedToUseOperand - Given the index of a register def operand, 840d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// check if the register def is tied to a source operand, due to either 841d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// two-address elimination or inline assembly constraints. Returns the 842a21bb20f5943f5f4c66d4727784c26007db2470cJim Grosbach /// first tied use operand index by reference if UseOpIdx is not null. 84399c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx = 0) const { 84499c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(DefOpIdx); 84599c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isDef() || !MO.isTied()) 84699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 84799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (UseOpIdx) 84899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *UseOpIdx = findTiedOperandIdx(DefOpIdx); 84999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 85099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 85132dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 852a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// isRegTiedToDefOperand - Return true if the use operand of the specified 853a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// index is tied to an def operand. It also returns the def operand index by 854a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// reference if DefOpIdx is not null. 85599c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx = 0) const { 85699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(UseOpIdx); 85799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || !MO.isTied()) 85899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 85999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (DefOpIdx) 86099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *DefOpIdx = findTiedOperandIdx(UseOpIdx); 86199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 86299c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 863a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 864e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// clearKillInfo - Clears kill flags on all operands. 865e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// 866e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman void clearKillInfo(); 867e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman 8689edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// substituteRegister - Replace all occurrences of FromReg with ToReg:SubIdx, 8699edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// properly composing subreg indices where necessary. 8709edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen void substituteRegister(unsigned FromReg, unsigned ToReg, unsigned SubIdx, 8719edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen const TargetRegisterInfo &RegInfo); 8729edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen 873b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterKilled - We have determined MI kills a register. Look for the 874b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// operand that uses it and mark it as IsKill. If AddIfNotFound is true, 875b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// add a implicit operand if it's not found. Returns true if the operand 876b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// exists / is added. 8776f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterKilled(unsigned IncomingReg, 8786f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 879b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 8808efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 8811a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// clearRegisterKills - Clear all kill flags affecting Reg. If RegInfo is 8821a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// provided, this includes super-register kills. 8831a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen void clearRegisterKills(unsigned Reg, const TargetRegisterInfo *RegInfo); 8841a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen 885b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterDead - We have determined MI defined a register without a use. 886b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// Look for the operand that defines it and mark it as IsDead. If 887b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// AddIfNotFound is true, add a implicit operand if it's not found. Returns 888b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// true if the operand exists / is added. 8896f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterDead(unsigned IncomingReg, const TargetRegisterInfo *RegInfo, 890b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 891b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 8928efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// addRegisterDefined - We have determined MI defines a register. Make sure 8938efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// there is an operand defining Reg. 8948efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen void addRegisterDefined(unsigned IncomingReg, 89563e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen const TargetRegisterInfo *RegInfo = 0); 8968efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 8972a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// setPhysRegsDeadExcept - Mark every physreg used by this instruction as 8982a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// dead except those in the UsedRegs list. 89977180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// 90077180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// On instructions with register mask operands, also add implicit-def 90177180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// operands for all registers in UsedRegs. 902a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen void setPhysRegsDeadExcept(ArrayRef<unsigned> UsedRegs, 903db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman const TargetRegisterInfo &TRI); 904db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman 9059f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// isSafeToMove - Return true if it is safe to move this instruction. If 9069f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// SawStore is set to true, it means that there is a store (or call) between 9079f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// the instruction's location and its intended destination. 908ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToMove(const TargetInstrInfo *TII, AliasAnalysis *AA, 909ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool &SawStore) const; 910b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 9113e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman /// isSafeToReMat - Return true if it's safe to rematerialize the specified 9123e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman /// instruction which defined the specified register instead of copying it. 913ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToReMat(const TargetInstrInfo *TII, AliasAnalysis *AA, 914ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng unsigned DstReg) const; 915df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 916f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// hasOrderedMemoryRef - Return true if this instruction may have an ordered 917f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// or volatile memory reference, or if the information describing the memory 918f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// reference is not available. Return false if it is known to have no 919f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// ordered or volatile memory references. 920f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen bool hasOrderedMemoryRef() const; 9213e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 922e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// isInvariantLoad - Return true if this instruction is loading from a 923e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// location whose value is invariant across the function. For example, 924f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman /// loading a value from the constant pool or from the argument area of 925e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// a function if it does not change. This should only return true of *all* 926e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// loads the instruction does are invariant (if it does multiple loads). 927a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool isInvariantLoad(AliasAnalysis *AA) const; 928e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 929229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// isConstantValuePHI - If the specified instruction is a PHI that always 930229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// merges together the same virtual register, return the register, otherwise 931229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// return 0. 932229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned isConstantValuePHI() const; 933229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 934c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// hasUnmodeledSideEffects - Return true if this instruction has side 935c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// effects that are not modeled by mayLoad / mayStore, etc. 936e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// For all instructions, the property is encoded in MCInstrDesc::Flags 937e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// (see MCInstrDesc::hasUnmodeledSideEffects(). The only exception is 938c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// INLINEASM instruction, in which case the side effect property is encoded 939c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// in one of its operands (see InlineAsm::Extra_HasSideEffect). 940c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// 941c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool hasUnmodeledSideEffects() const; 942c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng 943a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// allDefsAreDead - Return true if all the defs of this instruction are dead. 944a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// 945a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng bool allDefsAreDead() const; 946a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng 947b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// copyImplicitOps - Copy implicit register operands from specified 948b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// instruction to this instruction. 949be06aacaa9a270384599bbfa850b967e9996b9fbJakob Stoklund Olesen void copyImplicitOps(MachineFunction &MF, const MachineInstr *MI); 950b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng 951a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // 952a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // Debugging support 953fa78fbf446b505767e838f9c188707183c57fc9cChris Lattner // 954c6ada8e5f38168f13830e448f2b9e2d8e3eac72bAndrew Trick void print(raw_ostream &OS, const TargetMachine *TM = 0, 955c6ada8e5f38168f13830e448f2b9e2d8e3eac72bAndrew Trick bool SkipOpers = false) const; 956572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner void dump() const; 9572f898d207466bf233b55607e404baca302bc7b5eChris Lattner 958413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner //===--------------------------------------------------------------------===// 95962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Accessors used to build up machine instructions. 9607ad6be7b01a902f532eebb607306f7b3f4627718Chris Lattner 96156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add the specified operand to the instruction. If it is an implicit 96256706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// operand, it is added to the end of the operand list. If it is an 96356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// explicit operand it is added at the end of the explicit operand list 964108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach /// (before the first implicit operand). 96556706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 96656706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MF must be the machine function that was used to allocate this 96756706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instruction. 96856706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 96956706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder provides a more convenient interface for creating 97056706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions and adding operands. 97156706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(MachineFunction &MF, const MachineOperand &Op); 972108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 97356706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// Add an operand without providing an MF reference. This only works for 97456706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// instructions that are inserted in a basic block. 97556706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// 97656706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// MachineInstrBuilder and the two-argument addOperand(MF, MO) should be 97756706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen /// preferred. 97856706db45bbc7be0c087451ca9f1d258324df4b2Jakob Stoklund Olesen void addOperand(const MachineOperand &Op); 979433cb080bac56b4fac56f7625e07e17b4824ce8aJakob Stoklund Olesen 9805080f4d9919d39b367891dc51e739c571a66036cChris Lattner /// setDesc - Replace the instruction descriptor (thus opcode) of 98167f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// the current instruction with a new one. 9823c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 983e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng void setDesc(const MCInstrDesc &tid) { MCID = &tid; } 9843c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner 98506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// setDebugLoc - Replace current source information with new such. 986ab160cf371d6148d49b5401a903dd4ce381b2f8cDale Johannesen /// Avoid using this, the constructor argument is preferable. 98706efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 98806efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen void setDebugLoc(const DebugLoc dl) { debugLoc = dl; } 98906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 9903c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// RemoveOperand - Erase an operand from an instruction, leaving it with one 9913c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// fewer operand than it started with. 9923c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 99362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner void RemoveOperand(unsigned i); 99462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 995c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// addMemOperand - Add a MachineMemOperand to the machine instruction. 996c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// This function should be used only occasionally. The setMemRefs function 997c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// is the primary method for setting up a MachineInstr's MemRefs list. 998c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void addMemOperand(MachineFunction &MF, MachineMemOperand *MO); 9998e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1000c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// setMemRefs - Assign this MachineInstr's memory reference descriptor 1001c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// list. This does not transfer ownership. 1002c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) { 1003c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 1004b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen NumMemRefs = uint8_t(NewMemRefsEnd - NewMemRefs); 1005b2c79f2f630ed3e7da31ff8adb3014fb0ab47412Jakob Stoklund Olesen assert(NumMemRefs == NewMemRefsEnd - NewMemRefs && "Too many memrefs"); 1006c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 100769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 1008943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattnerprivate: 100962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// getRegInfo - If this instruction is embedded into a MachineFunction, 101062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return the MachineRegisterInfo object for the current function, otherwise 101162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return null. 101262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *getRegInfo(); 1013d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 1014699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// untieRegOperand - Break any tie involving OpIdx. 1015699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen void untieRegOperand(unsigned OpIdx) { 101694083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen MachineOperand &MO = getOperand(OpIdx); 101794083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen if (MO.isReg() && MO.isTied()) { 1018c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen getOperand(findTiedOperandIdx(OpIdx)).TiedTo = 0; 1019c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen MO.TiedTo = 0; 102094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen } 1021699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen } 1022699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 1023d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// addImplicitDefUseOperands - Add all implicit def and use operands to 1024d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// this instruction. 10259500e5d07ac9b94c8fed74150e444778a0dcb036Jakob Stoklund Olesen void addImplicitDefUseOperands(MachineFunction &MF); 1026108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 102762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 102862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 102962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands already be on their use lists. 1030ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void RemoveRegOperandsFromUseLists(MachineRegisterInfo&); 1031108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 103262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// AddRegOperandsToUseLists - Add all of the register operands in 103362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 103462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands not be on their use lists yet. 1035ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void AddRegOperandsToUseLists(MachineRegisterInfo&); 103685f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 103785f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a 103885f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// bundle. 103985f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasPropertyInBundle(unsigned Mask, QueryType Type) const; 1040a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve}; 104123ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 104205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare 104305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstr* by *value* of the instruction rather than by pointer value. 104405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// The hashing and equality testing functions ignore definitions so this is 104505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// useful for CSE, etc. 104605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Chengstruct MachineInstrExpressionTrait : DenseMapInfo<MachineInstr*> { 104705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getEmptyKey() { 104805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return 0; 104905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 105005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 105105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getTombstoneKey() { 105205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return reinterpret_cast<MachineInstr*>(-1); 105305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 105405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 105567eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng static unsigned getHashValue(const MachineInstr* const &MI); 105605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 105705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static bool isEqual(const MachineInstr* const &LHS, 105805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng const MachineInstr* const &RHS) { 105905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng if (RHS == getEmptyKey() || RHS == getTombstoneKey() || 106005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng LHS == getEmptyKey() || LHS == getTombstoneKey()) 106105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS == RHS; 106205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS->isIdenticalTo(RHS, MachineInstr::IgnoreVRegDefs); 106305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 106405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng}; 106505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 1066b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 1067593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve// Debugging Support 1068593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve 1069cb3718832375a581c5ea23f15918f3ea447a446cOwen Andersoninline raw_ostream& operator<<(raw_ostream &OS, const MachineInstr &MI) { 1070cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson MI.print(OS); 1071cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson return OS; 1072cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson} 1073cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson 1074d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 1075d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 107623ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#endif 1077