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 19103a64318bb716d68a4248996466900411d789beChris Lattner#include "llvm/CodeGen/MachineOperand.h" 20e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng#include "llvm/MC/MCInstrDesc.h" 21518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner#include "llvm/Target/TargetOpcodes.h" 22a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen#include "llvm/ADT/ArrayRef.h" 2384e679beea11ac55ed7871eec4deaccdf393de3eChris Lattner#include "llvm/ADT/ilist.h" 2484e679beea11ac55ed7871eec4deaccdf393de3eChris Lattner#include "llvm/ADT/ilist_node.h" 2584e679beea11ac55ed7871eec4deaccdf393de3eChris Lattner#include "llvm/ADT/STLExtras.h" 26d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen#include "llvm/ADT/StringRef.h" 2784e679beea11ac55ed7871eec4deaccdf393de3eChris Lattner#include "llvm/ADT/DenseMapInfo.h" 28576cd11ab8035d4240f7e6ea8d7c6c2e45154f86Chad Rosier#include "llvm/InlineAsm.h" 291e86a66b00b94adc4ad6977ef6b47c516ac62cecDevang Patel#include "llvm/Support/DebugLoc.h" 301baa88e3de8947b02d9ef4caa73e5860f048ec6eDan Gohman#include <vector> 31be583b914d8156b99d3da264d5adca37fee8dbc9John Criswell 32d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 33d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 3418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesentemplate <typename T> class SmallVectorImpl; 35e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohmanclass AliasAnalysis; 36b27087f5aa574f875598f4a309b7dd687c64a455Evan Chengclass TargetInstrInfo; 37f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesenclass TargetRegisterClass; 386f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohmanclass TargetRegisterInfo; 398e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanclass MachineFunction; 40c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanclass MachineMemOperand; 41c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 42b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 438b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// MachineInstr - Representation of each machine instruction. 448b915b4ed2c6e43413937ac71c0cbcf476ad1a98Chris Lattner/// 45fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohmanclass MachineInstr : public ilist_node<MachineInstr> { 46c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanpublic: 47c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman typedef MachineMemOperand **mmo_iterator; 48c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman 4945282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// Flags to specify different kinds of comments to output in 5045282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// assembly code. These flags carry semantic information not 5145282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// otherwise easily derivable from the IR text. 5245282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner /// 5345282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner enum CommentFlag { 5445282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner ReloadReuse = 0x1 5545282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner }; 566dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 576dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov enum MIFlag { 587c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng NoFlags = 0, 597c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng FrameSetup = 1 << 0, // Instruction is used as a part of 606dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // function frame setup code. 617c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng InsideBundle = 1 << 1 // Instruction is inside a bundle (not 627c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng // the first MI in a bundle) 636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov }; 64c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohmanprivate: 65e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc *MCID; // Instruction descriptor. 669a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng 676dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t Flags; // Various bits of additional 686dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // information about machine 696dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov // instruction. 706dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 716647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t AsmPrinterFlags; // Various bits of information used by 721251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // the AsmPrinter to emit helpful 731251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // comments. This is *not* semantic 741251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information. Do not use this for 751251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // anything other than to convey comment 761251443929a256c833717e1030c368d3b6e4cb7cDavid Greene // information to AsmPrinter. 771251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 78861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer uint16_t NumMemRefs; // information on memory references 79861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator MemRefs; 80861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer 81943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner std::vector<MachineOperand> Operands; // the operands 82f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner MachineBasicBlock *Parent; // Pointer to the owning basic block. 8306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen DebugLoc debugLoc; // Source line information. 84c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke 858e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman MachineInstr(const MachineInstr&); // DO NOT IMPLEMENT 869452b0797a80001920576d7e2ef4af05242cba69Chris Lattner void operator=(const MachineInstr&); // DO NOT IMPLEMENT 87c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos 88c0b9dc5be79f009d260edb5cd5e1d8346587aaa2Alkis Evlogimenos // Intrusive list support 89fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineInstr>; 90fed90b6d097d50881afb45e4d79f430db66dd741Dan Gohman friend struct ilist_traits<MachineBasicBlock>; 91f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner void setParent(MachineBasicBlock *P) { Parent = P; } 928e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 938e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr ctor - This constructor creates a copy of the given 948e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman /// MachineInstr in the given MachineFunction. 958e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman MachineInstr(MachineFunction &, const MachineInstr &); 968e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 97c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng /// MachineInstr ctor - This constructor creates a dummy MachineInstr with 98e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// MCID NULL and no operands. 99c0f64ffab93d11fb27a3b8a0707b77400918a20eEvan Cheng MachineInstr(); 100e8b57ef2603ed522083dc18e559ca4e20abf22aeVikram S. Adve 10106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // The next two constructors have DebugLoc and non-DebugLoc versions; 10206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // over time, the non-DebugLoc versions should be phased out and eventually 10306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen // removed. 10406efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 105666f8cb9b7486a45f59fd9ba3202e4b67dbad58cBob Wilson /// MachineInstr ctor - This constructor creates a MachineInstr and adds the 106666f8cb9b7486a45f59fd9ba3202e4b67dbad58cBob Wilson /// implicit operands. It reserves space for the number of operands specified 107e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// by the MCInstrDesc. The version with a DebugLoc should be preferred. 108e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng explicit MachineInstr(const MCInstrDesc &MCID, bool NoImp = false); 109d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 1107db458fb0768059f050d3a0f1a26818fa8e22712Chris Lattner /// MachineInstr ctor - Work exactly the same as the ctor above, except that 1117db458fb0768059f050d3a0f1a26818fa8e22712Chris Lattner /// the MachineInstr is created and added to the end of the specified basic 11206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// block. The version with a DebugLoc should be preferred. 113e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng MachineInstr(MachineBasicBlock *MBB, const MCInstrDesc &MCID); 114ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 11506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// MachineInstr ctor - This constructor create a MachineInstr and add the 11606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// implicit operands. It reserves space for number of operands specified by 117e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// MCInstrDesc. An explicit DebugLoc is supplied. 118e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng explicit MachineInstr(const MCInstrDesc &MCID, const DebugLoc dl, 11906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen bool NoImp = false); 12006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 12106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// MachineInstr ctor - Work exactly the same as the ctor above, except that 12206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// the MachineInstr is created and added to the end of the specified basic 12306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// block. 124108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach MachineInstr(MachineBasicBlock *MBB, const DebugLoc dl, 125e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc &MCID); 12606efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 127aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos ~MachineInstr(); 128aad5c0505183a5b7913f1a443a1f0650122551ccAlkis Evlogimenos 1298e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman // MachineInstrs are pool-allocated and owned by MachineFunction. 1308e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman friend class MachineFunction; 1318e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 1328e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohmanpublic: 133f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner const MachineBasicBlock* getParent() const { return Parent; } 134f20c1a497fe3922ac718429d65a5fe396890575eChris Lattner MachineBasicBlock* getParent() { return Parent; } 13506efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 1361251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlags - Return the asm printer flags bitvector. 1371251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 1386647b59c9263eb1decd7f7ff353c0c99ec09ae6cAnton Korobeynikov uint8_t getAsmPrinterFlags() const { return AsmPrinterFlags; } 1391251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 140cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// clearAsmPrinterFlags - clear the AsmPrinter bitvector 141cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 142cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner void clearAsmPrinterFlags() { AsmPrinterFlags = 0; } 143108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 1441251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// getAsmPrinterFlag - Return whether an AsmPrinter flag is set. 1451251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 14645282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner bool getAsmPrinterFlag(CommentFlag Flag) const { 1471251443929a256c833717e1030c368d3b6e4cb7cDavid Greene return AsmPrinterFlags & Flag; 1481251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 1491251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 1501251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// setAsmPrinterFlag - Set a flag for the AsmPrinter. 1511251443929a256c833717e1030c368d3b6e4cb7cDavid Greene /// 15245282aedb9c5a33d20565502c6c8fc871fa84cbeChris Lattner void setAsmPrinterFlag(CommentFlag Flag) { 1536dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov AsmPrinterFlags |= (uint8_t)Flag; 1546dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1556dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1567c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// clearAsmPrinterFlag - clear specific AsmPrinter flags 1577c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 1587c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng void clearAsmPrinterFlag(CommentFlag Flag) { 1597c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng AsmPrinterFlags &= ~Flag; 1607c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 1617c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 1626dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlags - Return the MI flags bitvector. 1636dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov uint8_t getFlags() const { 1646dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags; 1656dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1666dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1676dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// getFlag - Return whether an MI flag is set. 1686dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov bool getFlag(MIFlag Flag) const { 1696dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov return Flags & Flag; 1706dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1716dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1726dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov /// setFlag - Set a MI flag. 1736dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlag(MIFlag Flag) { 1746dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov Flags |= (uint8_t)Flag; 1756dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov } 1766dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 1776dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov void setFlags(unsigned flags) { 1786dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov Flags = flags; 1791251443929a256c833717e1030c368d3b6e4cb7cDavid Greene } 180108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 181ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// clearFlag - Clear a MI flag. 182ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng void clearFlag(MIFlag Flag) { 183ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng Flags &= ~((uint8_t)Flag); 184ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 185ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 1867c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// isInsideBundle - Return true if MI is in a bundle (but not the first MI 1877c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// in a bundle). 188cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner /// 1897c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// A bundle looks like this before it's finalized: 1907c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1917c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI | 1927c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1937c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1947c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 195b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 1967c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 1977c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 1987c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 199b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2007c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2017c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// In this case, the first MI starts a bundle but is not inside a bundle, the 2027c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// next 2 MIs are considered "inside" the bundle. 2037c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 2047c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// After a bundle is finalized, it looks like this: 2057c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2067c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | Bundle | 2077c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2087c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2097c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2107c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | MI * | 2117c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2127c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2137c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 214b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2157c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2167c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// | 2177c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 218b3aacdd358052ddd8d9fc9ac77f5e17a4048941aAndrew Trick /// | MI * | 2197c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// ---------------- 2207c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// The first instruction has the special opcode "BUNDLE". It's not "inside" 2217c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// a bundle, but the next three MIs are. 2227c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng bool isInsideBundle() const { 2237c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng return getFlag(InsideBundle); 224cbd323ad5259dc2bd3428a4ac26718b10adcd3cfChris Lattner } 2251251443929a256c833717e1030c368d3b6e4cb7cDavid Greene 226ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// setIsInsideBundle - Set InsideBundle bit. 227ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// 228ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng void setIsInsideBundle(bool Val = true) { 229ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng if (Val) 230ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng setFlag(InsideBundle); 231ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng else 232ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng clearFlag(InsideBundle); 233ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 234ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 23599a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// isBundled - Return true if this instruction part of a bundle. This is true 23699a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick /// if either itself or its following instruction is marked "InsideBundle". 23799a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick bool isBundled() const; 23899a7a13f4aa5bf8f272c95f7b09ba997d2b30a35Andrew Trick 23906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// getDebugLoc - Returns the debug location id of this MachineInstr. 24006efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 241d5fb7906130989a579d1bfe4490b414331e94feeChris Lattner DebugLoc getDebugLoc() const { return debugLoc; } 2426dd97471c43805b3febf598d50498a09a02e93f4Anton Korobeynikov 243d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// emitError - Emit an error referring to the source location of this 244d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// instruction. This should only be used for inline assembly that is somehow 245d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// impossible to compile. Other errors should have been handled much 246d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// earlier. 247d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 248d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// If this method returns, the caller should try to recover from the error. 249d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen /// 250d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen void emitError(StringRef Msg) const; 251d519de082766bb71e13f6a516b305ff841c6b48cJakob Stoklund Olesen 25269244300b8a0112efb44b6273ecea4ca6264b8cfChris Lattner /// getDesc - Returns the target instruction descriptor of this 25367f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// MachineInstr. 254e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng const MCInstrDesc &getDesc() const { return *MCID; } 255ab8672c8bb83e722b856eac67863542ea7e0cbb2Alkis Evlogimenos 256c54839573cd9ffa6af33dc5190cc40d498534585Brian Gaeke /// getOpcode - Returns the opcode of this MachineInstr. 257cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 258e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng int getOpcode() const { return MCID->Opcode; } 2599f495b54fa94dba4e0be59ba9736c7cf18d996d9Vikram S. Adve 260cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// Access to explicit operands of the instruction. 261cd0b3a90aa34bd42d75d8d86f74ca4972145781dBrian Gaeke /// 26234cd4a484e532cc463fd5a4bf59b88d13c5467c1Evan Cheng unsigned getNumOperands() const { return (unsigned)Operands.size(); } 263ea61c358720aa6c7a159d51658b34276316aa841Misha Brukman 264572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner const MachineOperand& getOperand(unsigned i) const { 265a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 266943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 267572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 268572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner MachineOperand& getOperand(unsigned i) { 269a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve assert(i < getNumOperands() && "getOperand() out of range!"); 270943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattner return Operands[i]; 271572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner } 2726d6c3f86186333037f2fd3fb001e8b2998c080d9Chris Lattner 27319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// getNumExplicitOperands - Returns the number of non-implicit operands. 27419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// 27519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng unsigned getNumExplicitOperands() const; 276ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 277ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner /// iterator/begin/end - Iterate over all operands of a machine instruction. 278ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner typedef std::vector<MachineOperand>::iterator mop_iterator; 279ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner typedef std::vector<MachineOperand>::const_iterator const_mop_iterator; 280ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 281ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner mop_iterator operands_begin() { return Operands.begin(); } 282ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner mop_iterator operands_end() { return Operands.end(); } 283ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 284ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner const_mop_iterator operands_begin() const { return Operands.begin(); } 285ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner const_mop_iterator operands_end() const { return Operands.end(); } 286ccb5c677c66aea0a86878de69d5346ef802a6505Chris Lattner 28769de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman /// Access to memory operands of the instruction 288c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman mmo_iterator memoperands_begin() const { return MemRefs; } 289861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer mmo_iterator memoperands_end() const { return MemRefs + NumMemRefs; } 290861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer bool memoperands_empty() const { return NumMemRefs == 0; } 29169de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 292cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// hasOneMemOperand - Return true if this instruction has exactly one 293cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman /// MachineMemOperand. 294cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman bool hasOneMemOperand() const { 295861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer return NumMemRefs == 1; 296cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman } 297cddc11e7570893233af8e84dfb8e7f0f9ab0090dDan Gohman 2985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// API for querying MachineInstr properties. They are the same as MCInstrDesc 2995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// queries but they are bundle aware. 3005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 30143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng enum QueryType { 30243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng IgnoreBundle, // Ignore bundles 30343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AnyInBundle, // Return true if any instruction in bundle has property 30443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng AllInBundle // Return true if all instructions in bundle have property 30543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng }; 30643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng 3075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasProperty - Return true if the instruction (or in the case of a bundle, 3085a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the instructions inside the bundle) has the specified property. 3095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The first argument is the property being queried. 3105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// The second argument indicates whether the query should look inside 3115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction bundles. 31285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasProperty(unsigned MCFlag, QueryType Type = AnyInBundle) const { 31385f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer // Inline the fast path. 31485f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer if (Type == IgnoreBundle || !isBundle()) 31585f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return getDesc().getFlags() & (1 << MCFlag); 31685f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 31785f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer // If we have a bundle, take the slow path. 31885f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer return hasPropertyInBundle(1 << MCFlag, Type); 31985f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer } 3205a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3215a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isVariadic - Return true if this instruction can have a variable number of 3225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands. In this case, the variable operands will be after the normal 3235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operands but before the implicit definitions and uses (if any are 3245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// present). 32543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isVariadic(QueryType Type = IgnoreBundle) const { 32643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Variadic, Type); 3275a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3285a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasOptionalDef - Set if this instruction has an optional definition, e.g. 3305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// ARM instructions which can set condition code if 's' bit is set. 33143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasOptionalDef(QueryType Type = IgnoreBundle) const { 33243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasOptionalDef, Type); 3335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isPseudo - Return true if this is a pseudo instruction that doesn't 3365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// correspond to a real machine instruction. 3377c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng /// 33843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPseudo(QueryType Type = IgnoreBundle) const { 33943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Pseudo, Type); 3405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 34243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isReturn(QueryType Type = AnyInBundle) const { 34343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Return, Type); 3445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 34643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCall(QueryType Type = AnyInBundle) const { 34743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Call, Type); 3485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBarrier - Returns true if the specified instruction stops control flow 3515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// from executing the instruction immediately following it. Examples include 3525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// unconditional branches and return instructions. 35343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBarrier(QueryType Type = AnyInBundle) const { 35443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Barrier, Type); 3555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3567c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isTerminator - Returns true if this instruction part of the terminator for 3585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// a basic block. Typically this is things like return and branch 3595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions. 3605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 3615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Various passes use this to insert code into the bottom of a basic block, 3625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// but before control flow occurs. 36343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isTerminator(QueryType Type = AnyInBundle) const { 36443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Terminator, Type); 3657c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng } 3667c2a4a30e0e16762c75adacebd05ec9fcbccf16bEvan Cheng 3675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBranch - Returns true if this is a conditional, unconditional, or 3685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// indirect branch. Predicates below can be used to discriminate between 3695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// these cases, and the TargetInstrInfo::AnalyzeBranch method can be used to 3705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// get more information. 37143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBranch(QueryType Type = AnyInBundle) const { 37243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Branch, Type); 3735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isIndirectBranch - Return true if this is an indirect branch, such as a 3765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// branch through a register. 37743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isIndirectBranch(QueryType Type = AnyInBundle) const { 37843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::IndirectBranch, Type); 3795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConditionalBranch - Return true if this is a branch which may fall 3825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// through to the next instruction or may transfer control flow to some other 3835a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// block. The TargetInstrInfo::AnalyzeBranch method can be used to get more 3845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// information about this branch. 38543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConditionalBranch(QueryType Type = AnyInBundle) const { 38643d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & !isBarrier(Type) & !isIndirectBranch(Type); 3875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3895a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isUnconditionalBranch - Return true if this is a branch which always 3905a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transfers control flow to some other block. The 3915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::AnalyzeBranch method can be used to get more information 3925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// about this branch. 39343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isUnconditionalBranch(QueryType Type = AnyInBundle) const { 39443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return isBranch(Type) & isBarrier(Type) & !isIndirectBranch(Type); 3955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 3965a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 3975a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // isPredicable - Return true if this instruction has a predicate operand that 3985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // controls execution. It may be set to 'always', or may be set to other 3995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// values. There are various methods in TargetInstrInfo that can be used to 4005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// control and modify the predicate in this instruction. 40143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isPredicable(QueryType Type = AllInBundle) const { 4025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // If it's a bundle than all bundled instructions must be predicable for this 4035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // to return true. 40443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Predicable, Type); 4055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4075a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCompare - Return true if this instruction is a comparison. 40843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCompare(QueryType Type = IgnoreBundle) const { 40943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Compare, Type); 4105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isMoveImmediate - Return true if this instruction is a move immediate 4135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// (including conditional moves) instruction. 41443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isMoveImmediate(QueryType Type = IgnoreBundle) const { 41543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MoveImm, Type); 4165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isBitcast - Return true if this instruction is a bitcast instruction. 4195a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 42043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isBitcast(QueryType Type = IgnoreBundle) const { 42143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Bitcast, Type); 4225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 424f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// isSelect - Return true if this instruction is a select instruction. 425f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen /// 426f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen bool isSelect(QueryType Type = IgnoreBundle) const { 427f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen return hasProperty(MCID::Select, Type); 428f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen } 429f2c64ef519b38a4328809b27b4a3a8e0c26e9709Jakob Stoklund Olesen 4305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isNotDuplicable - Return true if this instruction cannot be safely 4315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// duplicated. For example, if the instruction has a unique labels attached 4325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// to it, duplicating it would cause multiple definition errors. 43343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isNotDuplicable(QueryType Type = AnyInBundle) const { 43443d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::NotDuplicable, Type); 4355a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasDelaySlot - Returns true if the specified instruction has a delay slot 4385a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which must be filled by the code generator. 43943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasDelaySlot(QueryType Type = AnyInBundle) const { 44043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::DelaySlot, Type); 4415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// canFoldAsLoad - Return true for instructions that can be folded as 4445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// memory operands in other instructions. The most common use for this 4455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is instructions that are simple loads from memory that don't modify 4465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the loaded value in any way, but it can also be used for instructions 4475a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// that can be expressed as constant-pool loads, such as V_SETALLONES 4485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// on x86, to allow them to be folded when it is beneficial. 4495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// This should only be set on instructions that return a value in their 4505a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// only virtual register definition. 45143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool canFoldAsLoad(QueryType Type = IgnoreBundle) const { 45243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::FoldableAsLoad, Type); 4535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Side Effect Analysis 4575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4595a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayLoad - Return true if this instruction could possibly read memory. 4605a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple load 4615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may load a value and modify it, for example. 46243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayLoad(QueryType Type = AnyInBundle) const { 46343d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MayLoad, Type); 4645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// mayStore - Return true if this instruction could possibly modify memory. 4685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Instructions with this flag set are not necessarily simple store 4695a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instructions, they may store a modified value based on their operands, or 4705a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// may not actually modify anything, for example. 47143d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool mayStore(QueryType Type = AnyInBundle) const { 47243d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::MayStore, Type); 4735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4745a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4755a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4765a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Flags that indicate whether an instruction can be modified by a method. 4775a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng //===--------------------------------------------------------------------===// 4785a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4795a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isCommutable - Return true if this may be a 2- or 3-address 4805a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (of the form "X = op Y, Z, ..."), which produces the same 4815a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// result if Y and Z are exchanged. If this flag is set, then the 4825a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::commuteInstruction method may be used to hack on the 4835a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction. 4845a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 4855a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Note that this flag may be set on instructions that are only commutable 4865a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// sometimes. In these cases, the call to commuteInstruction will fail. 4875a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Also note that some instructions require non-trivial modification to 4885a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// commute them. 48943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isCommutable(QueryType Type = IgnoreBundle) const { 49043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Commutable, Type); 4915a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 4925a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 4935a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isConvertibleTo3Addr - Return true if this is a 2-address instruction 4945a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// which can be changed into a 3-address instruction if needed. Doing this 4955a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// transformation can be profitable in the register allocator, because it 4965a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that the instruction can use a 2-address form if possible, but 4975a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// degrade into a less efficient form if the source and dest register cannot 4985a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// be assigned to the same register. For example, this allows the x86 4995a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// backend to turn a "shl reg, 3" instruction into an LEA instruction, which 5005a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is the same speed as the shift but has bigger code size. 5015a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5025a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this returns true, then the target must implement the 5035a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// TargetInstrInfo::convertToThreeAddress method for this instruction, which 5045a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is allowed to fail if the transformation isn't valid for this specific 5055a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// instruction (e.g. shl reg, 4 on x86). 5065a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 50743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isConvertibleTo3Addr(QueryType Type = IgnoreBundle) const { 50843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ConvertibleTo3Addr, Type); 5095a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5105a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5115a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// usesCustomInsertionHook - Return true if this instruction requires 5125a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// custom insertion support when the DAG scheduler is inserting it into a 5135a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// machine basic block. If this is true for the instruction, it basically 5145a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// means that it is a pseudo instruction used at SelectionDAG time that is 5155a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// expanded out into magic code by the target when MachineInstrs are formed. 5165a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// 5175a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// If this is true, the TargetLoweringInfo::InsertAtEndOfBasicBlock method 5185a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// is used to insert this into the MachineBasicBlock. 51943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool usesCustomInsertionHook(QueryType Type = IgnoreBundle) const { 52043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::UsesCustomInserter, Type); 5215a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5225a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5235a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasPostISelHook - Return true if this instruction requires *adjustment* 5245a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// after instruction selection by calling a target hook. For example, this 5255a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// can be used to fill in ARM 's' optional operand depending on whether 5265a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// the conditional flag register is used. 52743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasPostISelHook(QueryType Type = IgnoreBundle) const { 52843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::HasPostISelHook, Type); 5295a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5305a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5315a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isRematerializable - Returns true if this instruction is a candidate for 5325a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// remat. This flag is deprecated, please don't use it anymore. If this 5335a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// flag is set, the isReallyTriviallyReMaterializable() method is called to 5345a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// verify the instruction is really rematable. 53543d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isRematerializable(QueryType Type = AllInBundle) const { 5365a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // It's only possible to re-mat a bundle if all bundled instructions are 5375a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // re-materializable. 53843d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::Rematerializable, Type); 5395a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5405a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5415a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// isAsCheapAsAMove - Returns true if this instruction has the same cost (or 5425a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// less) than a move instruction. This is useful during certain types of 5435a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// optimizations (e.g., remat during two-address conversion or machine licm) 5445a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// where we would like to remat or hoist the instruction, but not if it costs 5455a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// more than moving the instruction into the appropriate register. Note, we 5465a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// are not marking copies from and to the same register class with this flag. 54743d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool isAsCheapAsAMove(QueryType Type = AllInBundle) const { 5485a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // Only returns true for a bundle if all bundled instructions are cheap. 5495a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng // FIXME: This probably requires a target hook. 55043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::CheapAsAMove, Type); 5515a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5525a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5535a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraSrcRegAllocReq - Returns true if this instruction source operands 5545a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5555a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::STRD's two source registers must be an 5565a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::STM registers have to be in ascending order. 5575a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5585a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for sources of instructions with this flag. 55943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraSrcRegAllocReq(QueryType Type = AnyInBundle) const { 56043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraSrcRegAllocReq, Type); 5615a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5625a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5635a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// hasExtraDefRegAllocReq - Returns true if this instruction def operands 5645a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// have special register allocation requirements that are not captured by the 5655a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// operand register classes. e.g. ARM::LDRD's two def registers must be an 5665a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// even / odd pair, ARM::LDM registers have to be in ascending order. 5675a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// Post-register allocation passes should not attempt to change allocations 5685a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng /// for definitions of instructions with this flag. 56943d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng bool hasExtraDefRegAllocReq(QueryType Type = AnyInBundle) const { 57043d5d4ca1c93529c43e78cc5aa03c4ee10a6b0d8Evan Cheng return hasProperty(MCID::ExtraDefRegAllocReq, Type); 5715a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng } 5725a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 5735a96b3dad2f634c9081c8b2b6c2575441dc5a2bdEvan Cheng 574506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng enum MICheckType { 575506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng CheckDefs, // Check all operands for equality 576cbc988be22bc9411d95215c8b7251b5f85710674Evan Cheng CheckKillDead, // Check all operands including kill / dead markers 577506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreDefs, // Ignore all definitions 578506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng IgnoreVRegDefs // Ignore virtual register definitions 579506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng }; 580506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng 581fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// isIdenticalTo - Return true if this instruction is identical to (same 582fcfcb6cb502fd4562b57425a5802dc52f358c451Chris Lattner /// opcode and same operands as) the specified instruction. 583506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng bool isIdenticalTo(const MachineInstr *Other, 584506049f29f4f202a8e45feb916cc0264440a7f6dEvan Cheng MICheckType Check = CheckDefs) const; 585a2bae305fb5a870c4ef753ed290a7ddea73ec82bVikram S. Adve 5866b560918426182d2b46b899d609911d49f6739f7Chris Lattner /// removeFromParent - This method unlinks 'this' from the containing basic 5876b560918426182d2b46b899d609911d49f6739f7Chris Lattner /// block, and returns it, but does not delete it. 5886b560918426182d2b46b899d609911d49f6739f7Chris Lattner MachineInstr *removeFromParent(); 589108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 5906b560918426182d2b46b899d609911d49f6739f7Chris Lattner /// eraseFromParent - This method unlinks 'this' from the containing basic 5916b560918426182d2b46b899d609911d49f6739f7Chris Lattner /// block and deletes it. 5928e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman void eraseFromParent(); 593466b534a570f574ed485d875bbca8454f68dcb52Tanya Lattner 5944406604047423576e36657c7ede266ca42e79642Dan Gohman /// isLabel - Returns true if the MachineInstr represents a label. 5954406604047423576e36657c7ede266ca42e79642Dan Gohman /// 596518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isLabel() const { 5977431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling return getOpcode() == TargetOpcode::PROLOG_LABEL || 598518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner getOpcode() == TargetOpcode::EH_LABEL || 599518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner getOpcode() == TargetOpcode::GC_LABEL; 600518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 601108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 6027431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling bool isPrologLabel() const { 6037431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling return getOpcode() == TargetOpcode::PROLOG_LABEL; 6047431beaba2a01c3fe299c861b2ec85cbf1dc81c4Bill Wendling } 605518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isEHLabel() const { return getOpcode() == TargetOpcode::EH_LABEL; } 606518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isGCLabel() const { return getOpcode() == TargetOpcode::GC_LABEL; } 607518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isDebugValue() const { return getOpcode() == TargetOpcode::DBG_VALUE; } 608108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 609518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isPHI() const { return getOpcode() == TargetOpcode::PHI; } 610518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isKill() const { return getOpcode() == TargetOpcode::KILL; } 611518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isImplicitDef() const { return getOpcode()==TargetOpcode::IMPLICIT_DEF; } 612518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInlineAsm() const { return getOpcode() == TargetOpcode::INLINEASM; } 613c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool isStackAligningInlineAsm() const; 614576cd11ab8035d4240f7e6ea8d7c6c2e45154f86Chad Rosier InlineAsm::AsmDialect getInlineAsmDialect() const; 615518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isInsertSubreg() const { 616518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::INSERT_SUBREG; 617518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 618518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner bool isSubregToReg() const { 619518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner return getOpcode() == TargetOpcode::SUBREG_TO_REG; 620518bb53485df640d7b7e3f6b0544099020c42aa7Chris Lattner } 6213d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng bool isRegSequence() const { 6223d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng return getOpcode() == TargetOpcode::REG_SEQUENCE; 6233d720fbc6ad40bc9287a420f824d244965d24631Evan Cheng } 624ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng bool isBundle() const { 625ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng return getOpcode() == TargetOpcode::BUNDLE; 626ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng } 627a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen bool isCopy() const { 628a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen return getOpcode() == TargetOpcode::COPY; 629a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen } 630cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola bool isFullCopy() const { 631cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola return isCopy() && !getOperand(0).getSubReg() && !getOperand(1).getSubReg(); 632cfe5254cd34d9414d9f6b8aa02dc1239d71a703fRafael Espindola } 633a4e1ba53ddedd08669886b2849926bb33facc198Jakob Stoklund Olesen 634273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// isCopyLike - Return true if the instruction behaves like a copy. 635273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen /// This does not include native copy instructions. 636273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen bool isCopyLike() const { 6370bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() || isSubregToReg(); 6380bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen } 6390bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen 6400bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen /// isIdentityCopy - Return true is the instruction is an identity copy. 6410bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen bool isIdentityCopy() const { 6420bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen return isCopy() && getOperand(0).getReg() == getOperand(1).getReg() && 6430bc25f40402f48ba42fc45403f635b20d90fabb3Jakob Stoklund Olesen getOperand(0).getSubReg() == getOperand(1).getSubReg(); 644273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen } 645273f7e42994a5bce0614d04d96dbfdf05fd652e5Jakob Stoklund Olesen 6463f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// isTransient - Return true if this is a transient instruction that is 6473f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// either very likely to be eliminated during register allocation (such as 6483f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// copy-like instructions), or if this instruction doesn't have an 6493f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen /// execution-time cost. 6503f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen bool isTransient() const { 6513f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen switch(getOpcode()) { 6523f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen default: return false; 6533f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Copy-like instructions are usually eliminated during register allocation. 6543f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PHI: 6553f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::COPY: 6563f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::INSERT_SUBREG: 6573f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::SUBREG_TO_REG: 6583f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::REG_SEQUENCE: 6593f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen // Pseudo-instructions that don't produce any real output. 6603f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::IMPLICIT_DEF: 6613f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::KILL: 6623f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::PROLOG_LABEL: 6633f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::EH_LABEL: 6643f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::GC_LABEL: 6653f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen case TargetOpcode::DBG_VALUE: 6663f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen return true; 6673f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 6683f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen } 6693f63a589788995a724bc4587d022fe15ea8576baJakob Stoklund Olesen 670ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng /// getBundleSize - Return the number of instructions inside the MI bundle. 671ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng unsigned getBundleSize() const; 672ddfd1377d2e4154d44dc3ad217735adc15af2e3fEvan Cheng 6736130f66eaae89f8878590796977678afa8448926Evan Cheng /// readsRegister - Return true if the MachineInstr reads the specified 6746130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there 6756130f66eaae89f8878590796977678afa8448926Evan Cheng /// is a read of a super-register. 6767ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// This does not count partial redefines of virtual registers as reads: 6777ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// %reg1024:6 = OP. 6786130f66eaae89f8878590796977678afa8448926Evan Cheng bool readsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 6796130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, false, TRI) != -1; 6806130f66eaae89f8878590796977678afa8448926Evan Cheng } 6816130f66eaae89f8878590796977678afa8448926Evan Cheng 6827ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// readsVirtualRegister - Return true if the MachineInstr reads the specified 6837ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// virtual register. Take into account that a partial define is a 6847ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen /// read-modify-write operation. 68518b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen bool readsVirtualRegister(unsigned Reg) const { 68618b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen return readsWritesVirtualRegister(Reg).first; 68718b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen } 68818b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen 68918b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// readsWritesVirtualRegister - Return a pair of bools (reads, writes) 69018b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// indicating if this instruction reads or writes Reg. This also considers 69118b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// partial defines. 69218b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen /// If Ops is not null, all operand indices for Reg are added. 69318b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen std::pair<bool,bool> readsWritesVirtualRegister(unsigned Reg, 69418b2c9d3bf5a6633535eaad8388f0353b14cbfb8Jakob Stoklund Olesen SmallVectorImpl<unsigned> *Ops = 0) const; 6957ebc4d63db05ac214d36bc01b4d60adadaf923e5Jakob Stoklund Olesen 6966130f66eaae89f8878590796977678afa8448926Evan Cheng /// killsRegister - Return true if the MachineInstr kills the specified 6976130f66eaae89f8878590796977678afa8448926Evan Cheng /// register. If TargetRegisterInfo is passed, then it also checks if there is 6986130f66eaae89f8878590796977678afa8448926Evan Cheng /// a kill of a super-register. 6996130f66eaae89f8878590796977678afa8448926Evan Cheng bool killsRegister(unsigned Reg, const TargetRegisterInfo *TRI = NULL) const { 7006130f66eaae89f8878590796977678afa8448926Evan Cheng return findRegisterUseOperandIdx(Reg, true, TRI) != -1; 7016130f66eaae89f8878590796977678afa8448926Evan Cheng } 7026130f66eaae89f8878590796977678afa8448926Evan Cheng 7031015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// definesRegister - Return true if the MachineInstr fully defines the 7046130f66eaae89f8878590796977678afa8448926Evan Cheng /// specified register. If TargetRegisterInfo is passed, then it also checks 7056130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a def of a super-register. 7061015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7071015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool definesRegister(unsigned Reg, const TargetRegisterInfo *TRI=NULL) const { 7081015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, false, TRI) != -1; 7091015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng } 7101015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng 7111015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// modifiesRegister - Return true if the MachineInstr modifies (fully define 7121015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// or partially define) the specified register. 7131015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// NOTE: It's ignoring subreg indices on virtual registers. 7141015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool modifiesRegister(unsigned Reg, const TargetRegisterInfo *TRI) const { 7151015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, false, true, TRI) != -1; 7166130f66eaae89f8878590796977678afa8448926Evan Cheng } 7176130f66eaae89f8878590796977678afa8448926Evan Cheng 7186130f66eaae89f8878590796977678afa8448926Evan Cheng /// registerDefIsDead - Returns true if the register is dead in this machine 7196130f66eaae89f8878590796977678afa8448926Evan Cheng /// instruction. If TargetRegisterInfo is passed, then it also checks 7206130f66eaae89f8878590796977678afa8448926Evan Cheng /// if there is a dead def of a super-register. 7216130f66eaae89f8878590796977678afa8448926Evan Cheng bool registerDefIsDead(unsigned Reg, 7226130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const { 7231015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng return findRegisterDefOperandIdx(Reg, true, false, TRI) != -1; 7246130f66eaae89f8878590796977678afa8448926Evan Cheng } 7256130f66eaae89f8878590796977678afa8448926Evan Cheng 726faa510726f4b40aa4495e60e4d341c6467e3fb01Evan Cheng /// findRegisterUseOperandIdx() - Returns the operand index that is a use of 72710f9101c4c0df0837414976ad0ef0e86d6771059Jim Grosbach /// the specific register or -1 if it is not found. It further tightens 72876d7e76c15c258ec4a71fd75a2a32bca3a5e5e27Evan Cheng /// the search criteria to a use that kills the register if isKill is true. 7296130f66eaae89f8878590796977678afa8448926Evan Cheng int findRegisterUseOperandIdx(unsigned Reg, bool isKill = false, 7306130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 7316130f66eaae89f8878590796977678afa8448926Evan Cheng 7326130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterUseOperand - Wrapper for findRegisterUseOperandIdx, it returns 7336130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 7349180c8e3cfd12abd21242768db05072a209ca6e7Evan Cheng MachineOperand *findRegisterUseOperand(unsigned Reg, bool isKill = false, 7356130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 7366130f66eaae89f8878590796977678afa8448926Evan Cheng int Idx = findRegisterUseOperandIdx(Reg, isKill, TRI); 7376130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 7386130f66eaae89f8878590796977678afa8448926Evan Cheng } 739108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 7406130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperandIdx() - Returns the operand index that is a def of 741703bfe69092e8da79fbef2fc5ca07b805ad9f753Dan Gohman /// the specified register or -1 if it is not found. If isDead is true, defs 7421015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// that are not dead are skipped. If Overlap is true, then it also looks for 7431015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// defs that merely overlap the specified register. If TargetRegisterInfo is 7441015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng /// non-null, then it also checks if there is a def of a super-register. 7451cf8b0f2a5435d8444b6cc7d4a27eef424398273Jakob Stoklund Olesen /// This may also return a register mask operand when Overlap is true. 7461015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int findRegisterDefOperandIdx(unsigned Reg, 7471015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng bool isDead = false, bool Overlap = false, 7486130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) const; 7496130f66eaae89f8878590796977678afa8448926Evan Cheng 7506130f66eaae89f8878590796977678afa8448926Evan Cheng /// findRegisterDefOperand - Wrapper for findRegisterDefOperandIdx, it returns 7516130f66eaae89f8878590796977678afa8448926Evan Cheng /// a pointer to the MachineOperand rather than an index. 752631bd3cdf39eb099d5d5d279b17b08f119956538Evan Cheng MachineOperand *findRegisterDefOperand(unsigned Reg, bool isDead = false, 7536130f66eaae89f8878590796977678afa8448926Evan Cheng const TargetRegisterInfo *TRI = NULL) { 7541015ba7018c87f48cc7bb45a564eb4a27241e76aEvan Cheng int Idx = findRegisterDefOperandIdx(Reg, isDead, false, TRI); 7556130f66eaae89f8878590796977678afa8448926Evan Cheng return (Idx == -1) ? NULL : &getOperand(Idx); 7566130f66eaae89f8878590796977678afa8448926Evan Cheng } 75719e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 758f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// findFirstPredOperandIdx() - Find the index of the first operand in the 759f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// operand list that is used to represent the predicate. It returns -1 if 760f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng /// none is found. 761f277ee4be7edabb759a7f78138b693d72d0c263fEvan Cheng int findFirstPredOperandIdx() const; 762108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 7639dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// findInlineAsmFlagIdx() - Find the index of the flag word operand that 7649dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// corresponds to operand OpIdx on an inline asm instruction. Returns -1 if 7659dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// getOperand(OpIdx) does not belong to an inline asm operand group. 7669dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 7679dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// If GroupNo is not NULL, it will receive the number of the operand group 7689dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// containing OpIdx. 7699dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 7709dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// The flag operand is an immediate that can be decoded with methods like 7719dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// InlineAsm::hasRegClassConstraint(). 7729dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen /// 7739dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen int findInlineAsmFlagIdx(unsigned OpIdx, unsigned *GroupNo = 0) const; 7749dfaacb696d1ad850f9f5f49a94fdb81cf8ae018Jakob Stoklund Olesen 775f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// getRegClassConstraint - Compute the static register class constraint for 776f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// operand OpIdx. For normal instructions, this is derived from the 777f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// MCInstrDesc. For inline assembly it is derived from the flag words. 778f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 779f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// Returns NULL if the static register classs constraint cannot be 780f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// determined. 781f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen /// 782f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterClass* 783f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen getRegClassConstraint(unsigned OpIdx, 784f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetInstrInfo *TII, 785f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen const TargetRegisterInfo *TRI) const; 786f5916976e9057177100badee7b7388bd7ba76ac3Jakob Stoklund Olesen 78794083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// tieOperands - Add a tie between the register operands at DefIdx and 78894083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// UseIdx. The tie will cause the register allocator to ensure that the two 78994083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// operands are assigned the same physical register. 79094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// 79194083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// Tied operands are managed automatically for explicit operands in the 79294083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen /// MCInstrDesc. This method is for exceptional cases like inline asm. 79394083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen void tieOperands(unsigned DefIdx, unsigned UseIdx); 79494083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen 795699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// findTiedOperandIdx - Given the index of a tied register operand, find the 796699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// operand it is tied to. Defs are tied to uses and vice versa. Returns the 797699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// index of the tied operand which must exist. 798699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen unsigned findTiedOperandIdx(unsigned OpIdx) const; 799699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 800d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// isRegTiedToUseOperand - Given the index of a register def operand, 801d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// check if the register def is tied to a source operand, due to either 802d9df5017040489303acb57bdd8697ef0f8bafc08Bob Wilson /// two-address elimination or inline assembly constraints. Returns the 803a21bb20f5943f5f4c66d4727784c26007db2470cJim Grosbach /// first tied use operand index by reference if UseOpIdx is not null. 80499c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToUseOperand(unsigned DefOpIdx, unsigned *UseOpIdx = 0) const { 80599c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(DefOpIdx); 80699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isDef() || !MO.isTied()) 80799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 80899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (UseOpIdx) 80999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *UseOpIdx = findTiedOperandIdx(DefOpIdx); 81099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 81199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 81232dfbeada7292167bb488f36a71a5a6a519ddaffEvan Cheng 813a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// isRegTiedToDefOperand - Return true if the use operand of the specified 814a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// index is tied to an def operand. It also returns the def operand index by 815a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng /// reference if DefOpIdx is not null. 81699c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen bool isRegTiedToDefOperand(unsigned UseOpIdx, unsigned *DefOpIdx = 0) const { 81799c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen const MachineOperand &MO = getOperand(UseOpIdx); 81899c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (!MO.isReg() || !MO.isUse() || !MO.isTied()) 81999c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return false; 82099c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen if (DefOpIdx) 82199c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen *DefOpIdx = findTiedOperandIdx(UseOpIdx); 82299c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen return true; 82399c416c9f7e8a9d7d1038d03cafebec730280398Jakob Stoklund Olesen } 824a24752ff43dc1ad8c18c5d9e78549c45f62b980eEvan Cheng 825e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// clearKillInfo - Clears kill flags on all operands. 826e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman /// 827e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman void clearKillInfo(); 828e6cd757e6800b9b94a6459ec148c0624c4f2e3c1Dan Gohman 8299a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng /// copyKillDeadInfo - Copies kill / dead operand properties from MI. 8309a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng /// 831576d123e130a8291669dd2384a3735cc4933fd00Evan Cheng void copyKillDeadInfo(const MachineInstr *MI); 8329a00279988612d0f960fb8d43e4ccfcab89e0e14Evan Cheng 83319e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng /// copyPredicates - Copies predicate operand(s) from MI. 83419e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng void copyPredicates(const MachineInstr *MI); 83519e3f31f6acd9f5ce3cdd8372d4cb598ed921f95Evan Cheng 8369edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// substituteRegister - Replace all occurrences of FromReg with ToReg:SubIdx, 8379edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen /// properly composing subreg indices where necessary. 8389edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen void substituteRegister(unsigned FromReg, unsigned ToReg, unsigned SubIdx, 8399edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen const TargetRegisterInfo &RegInfo); 8409edf7deb37f0f97664f279040fa15d89f32e23d9Jakob Stoklund Olesen 841b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterKilled - We have determined MI kills a register. Look for the 842b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// operand that uses it and mark it as IsKill. If AddIfNotFound is true, 843b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// add a implicit operand if it's not found. Returns true if the operand 844b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// exists / is added. 8456f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterKilled(unsigned IncomingReg, 8466f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman const TargetRegisterInfo *RegInfo, 847b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 8488efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 8491a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// clearRegisterKills - Clear all kill flags affecting Reg. If RegInfo is 8501a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen /// provided, this includes super-register kills. 8511a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen void clearRegisterKills(unsigned Reg, const TargetRegisterInfo *RegInfo); 8521a96c914315b0286d84c507d696484e2c95875a4Jakob Stoklund Olesen 853b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// addRegisterDead - We have determined MI defined a register without a use. 854b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// Look for the operand that defines it and mark it as IsDead. If 855b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// AddIfNotFound is true, add a implicit operand if it's not found. Returns 856b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson /// true if the operand exists / is added. 8576f0d024a534af18d9e60b3ea757376cd8a3a980eDan Gohman bool addRegisterDead(unsigned IncomingReg, const TargetRegisterInfo *RegInfo, 858b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson bool AddIfNotFound = false); 859b487e7215c4f70f3d98f8fbc0a11eb119afc1f37Owen Anderson 8608efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// addRegisterDefined - We have determined MI defines a register. Make sure 8618efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen /// there is an operand defining Reg. 8628efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen void addRegisterDefined(unsigned IncomingReg, 86363e6a488cb6c29983415221719d05fbf99e00193Jakob Stoklund Olesen const TargetRegisterInfo *RegInfo = 0); 8648efadf94b568c08de3ff8ce35fd904a935387406Jakob Stoklund Olesen 8652a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// setPhysRegsDeadExcept - Mark every physreg used by this instruction as 8662a09f878ef64f216268df3dbe2f51b949f18c145Jim Grosbach /// dead except those in the UsedRegs list. 86777180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// 86877180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// On instructions with register mask operands, also add implicit-def 86977180e0b402fff318cffd89a2251e46b3dce4064Jakob Stoklund Olesen /// operands for all registers in UsedRegs. 870a37818dbb119bda75273f16b8484732e742cdbb7Jakob Stoklund Olesen void setPhysRegsDeadExcept(ArrayRef<unsigned> UsedRegs, 871db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman const TargetRegisterInfo &TRI); 872db4971259ce94cea26e555e9ade82672a3581f5cDan Gohman 8739f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// isSafeToMove - Return true if it is safe to move this instruction. If 8749f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// SawStore is set to true, it means that there is a store (or call) between 8759f1c8317a4676945b4961ddb9827ef2412551620Evan Cheng /// the instruction's location and its intended destination. 876ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToMove(const TargetInstrInfo *TII, AliasAnalysis *AA, 877ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool &SawStore) const; 878b27087f5aa574f875598f4a309b7dd687c64a455Evan Cheng 8793e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman /// isSafeToReMat - Return true if it's safe to rematerialize the specified 8803e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman /// instruction which defined the specified register instead of copying it. 881ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng bool isSafeToReMat(const TargetInstrInfo *TII, AliasAnalysis *AA, 882ac1abde05b7e6956c01deb6557539bee8fea30f4Evan Cheng unsigned DstReg) const; 883df3b99381f1c211071cc1daf0cc297666877bbcbEvan Cheng 884f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// hasOrderedMemoryRef - Return true if this instruction may have an ordered 885f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// or volatile memory reference, or if the information describing the memory 886f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// reference is not available. Return false if it is known to have no 887f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen /// ordered or volatile memory references. 888f036f7a1e79910bf5b5b6f37d2e512b4f01155a0Jakob Stoklund Olesen bool hasOrderedMemoryRef() const; 8893e4fb70c6af53a2d00e057a7e4a8f93eb2ff2112Dan Gohman 890e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// isInvariantLoad - Return true if this instruction is loading from a 891e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// location whose value is invariant across the function. For example, 892f451cb870efcf9e0302d25ed05f4cac6bb494e42Dan Gohman /// loading a value from the constant pool or from the argument area of 893e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// a function if it does not change. This should only return true of *all* 894e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman /// loads the instruction does are invariant (if it does multiple loads). 895a70dca156fa76d452f54829b5c5f962ddfd94ef2Dan Gohman bool isInvariantLoad(AliasAnalysis *AA) const; 896e33f44cfc547359bc28526e4c5e1852b600b4448Dan Gohman 897229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// isConstantValuePHI - If the specified instruction is a PHI that always 898229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// merges together the same virtual register, return the register, otherwise 899229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng /// return 0. 900229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng unsigned isConstantValuePHI() const; 901229694f0ee630ceabe96a8bd48952f6740f928b2Evan Cheng 902c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// hasUnmodeledSideEffects - Return true if this instruction has side 903c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// effects that are not modeled by mayLoad / mayStore, etc. 904e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// For all instructions, the property is encoded in MCInstrDesc::Flags 905e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng /// (see MCInstrDesc::hasUnmodeledSideEffects(). The only exception is 906c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// INLINEASM instruction, in which case the side effect property is encoded 907c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// in one of its operands (see InlineAsm::Extra_HasSideEffect). 908c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng /// 909c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng bool hasUnmodeledSideEffects() const; 910c36b7069b42bece963b7e6adf020353ce990ef76Evan Cheng 911a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// allDefsAreDead - Return true if all the defs of this instruction are dead. 912a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng /// 913a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng bool allDefsAreDead() const; 914a57fabe815ccf016eead526eb3ef475f116ab155Evan Cheng 915b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// copyImplicitOps - Copy implicit register operands from specified 916b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng /// instruction to this instruction. 917b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng void copyImplicitOps(const MachineInstr *MI); 918b179b46cc558c720d23a066c768bad71f975eb93Evan Cheng 919a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // 920a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve // Debugging support 921fa78fbf446b505767e838f9c188707183c57fc9cChris Lattner // 922cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson void print(raw_ostream &OS, const TargetMachine *TM = 0) const; 923572f5c8c0cf66cd6f53dda255cd8c4d8f27d8505Chris Lattner void dump() const; 9242f898d207466bf233b55607e404baca302bc7b5eChris Lattner 925413746e9833d97a8b463ef6a788aa326cf3829a2Chris Lattner //===--------------------------------------------------------------------===// 92662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner // Accessors used to build up machine instructions. 9277ad6be7b01a902f532eebb607306f7b3f4627718Chris Lattner 92862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// addOperand - Add the specified operand to the instruction. If it is an 92962ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// implicit operand, it is added to the end of the operand list. If it is 93062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// an explicit operand it is added at the end of the explicit operand list 931108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach /// (before the first implicit operand). 93262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner void addOperand(const MachineOperand &Op); 933108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 9345080f4d9919d39b367891dc51e739c571a66036cChris Lattner /// setDesc - Replace the instruction descriptor (thus opcode) of 93567f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng /// the current instruction with a new one. 9363c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 937e837dead3c8dc3445ef6a0e2322179c57e264a13Evan Cheng void setDesc(const MCInstrDesc &tid) { MCID = &tid; } 9383c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner 93906efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// setDebugLoc - Replace current source information with new such. 940ab160cf371d6148d49b5401a903dd4ce381b2f8cDale Johannesen /// Avoid using this, the constructor argument is preferable. 94106efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen /// 94206efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen void setDebugLoc(const DebugLoc dl) { debugLoc = dl; } 94306efc02854a96a9f92edc3bf46b0451f488cf2e6Dale Johannesen 9443c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// RemoveOperand - Erase an operand from an instruction, leaving it with one 9453c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// fewer operand than it started with. 9463c8cbe6567c94fdd24ec9b2b8b5c5cc1b01a8c58Chris Lattner /// 94762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner void RemoveOperand(unsigned i); 94862ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner 949c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// addMemOperand - Add a MachineMemOperand to the machine instruction. 950c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// This function should be used only occasionally. The setMemRefs function 951c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// is the primary method for setting up a MachineInstr's MemRefs list. 952c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void addMemOperand(MachineFunction &MF, MachineMemOperand *MO); 9538e5f2c6f65841542e2a7092553fe42a00048e4c7Dan Gohman 954c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// setMemRefs - Assign this MachineInstr's memory reference descriptor 955c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman /// list. This does not transfer ownership. 956c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman void setMemRefs(mmo_iterator NewMemRefs, mmo_iterator NewMemRefsEnd) { 957c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman MemRefs = NewMemRefs; 958861ea230a7841fe4ccc8a1cd5460354e59aeed3cBenjamin Kramer NumMemRefs = NewMemRefsEnd - NewMemRefs; 959c76909abfec876c6b751d693ebd3df07df686aa0Dan Gohman } 96069de1932b350d7cdfc0ed1f4198d6f78c7822a02Dan Gohman 961943b5e117fe9a087f9aa529a2632c2d32cc22374Chris Lattnerprivate: 96262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// getRegInfo - If this instruction is embedded into a MachineFunction, 96362ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return the MachineRegisterInfo object for the current function, otherwise 96462ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// return null. 96562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner MachineRegisterInfo *getRegInfo(); 966d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng 967699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen /// untieRegOperand - Break any tie involving OpIdx. 968699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen void untieRegOperand(unsigned OpIdx) { 96994083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen MachineOperand &MO = getOperand(OpIdx); 97094083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen if (MO.isReg() && MO.isTied()) { 971c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen getOperand(findTiedOperandIdx(OpIdx)).TiedTo = 0; 972c8ecb401caefc5fb97b20041544d8da5d8e2f830Jakob Stoklund Olesen MO.TiedTo = 0; 97394083149fd6891c8a72472cf1814fa6600a75979Jakob Stoklund Olesen } 974699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen } 975699ac049517285d978ed607b2735976c5ae97ac0Jakob Stoklund Olesen 976d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// addImplicitDefUseOperands - Add all implicit def and use operands to 977d7de496b23fca8145f777a56281457bf64e8bbadEvan Cheng /// this instruction. 97867f660cb080965ea93ed6d7265a67100f2fe38e4Evan Cheng void addImplicitDefUseOperands(); 979108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 98062ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// RemoveRegOperandsFromUseLists - Unlink all of the register operands in 98162ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 98262ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands already be on their use lists. 983ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void RemoveRegOperandsFromUseLists(MachineRegisterInfo&); 984108e4dbecb690056e678da2f15c56ef7220f9ec9Jim Grosbach 98562ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// AddRegOperandsToUseLists - Add all of the register operands in 98662ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// this instruction from their respective use lists. This requires that the 98762ed6b9ade63bf01717ce5274fa11e93e873d245Chris Lattner /// operands not be on their use lists yet. 988ff2b99afc8cbc6cfa73181072888e0f9f07deb7eJakob Stoklund Olesen void AddRegOperandsToUseLists(MachineRegisterInfo&); 98985f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer 99085f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// hasPropertyInBundle - Slow path for hasProperty when we're dealing with a 99185f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer /// bundle. 99285f9cef27e6b2605e67e94afc949f5b5f5b90668Benjamin Kramer bool hasPropertyInBundle(unsigned Mask, QueryType Type) const; 993a995e6086deca9cbd9aab9d6e1e94b36964b66daVikram S. Adve}; 99423ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve 99505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstrExpressionTrait - Special DenseMapInfo traits to compare 99605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// MachineInstr* by *value* of the instruction rather than by pointer value. 99705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// The hashing and equality testing functions ignore definitions so this is 99805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng/// useful for CSE, etc. 99905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Chengstruct MachineInstrExpressionTrait : DenseMapInfo<MachineInstr*> { 100005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getEmptyKey() { 100105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return 0; 100205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 100305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 100405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static inline MachineInstr *getTombstoneKey() { 100505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return reinterpret_cast<MachineInstr*>(-1); 100605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 100705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 100867eaa08f2b71aa8aec8cdf4c7d970db4cad58adaEvan Cheng static unsigned getHashValue(const MachineInstr* const &MI); 100905bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 101005bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng static bool isEqual(const MachineInstr* const &LHS, 101105bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng const MachineInstr* const &RHS) { 101205bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng if (RHS == getEmptyKey() || RHS == getTombstoneKey() || 101305bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng LHS == getEmptyKey() || LHS == getTombstoneKey()) 101405bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS == RHS; 101505bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng return LHS->isIdenticalTo(RHS, MachineInstr::IgnoreVRegDefs); 101605bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng } 101705bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng}; 101805bdcbb1ae48d1d1209173d137d11c35f46abff3Evan Cheng 1019b05497e0ca1ba2e7f57b792cc160e5d1c8579582Chris Lattner//===----------------------------------------------------------------------===// 1020593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve// Debugging Support 1021593da4acc56d4c591ad688e6605b04d0825c867eVikram S. Adve 1022cb3718832375a581c5ea23f15918f3ea447a446cOwen Andersoninline raw_ostream& operator<<(raw_ostream &OS, const MachineInstr &MI) { 1023cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson MI.print(OS); 1024cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson return OS; 1025cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson} 1026cb3718832375a581c5ea23f15918f3ea447a446cOwen Anderson 1027d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 1028d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 102923ee550765232e22d0daf6407141ecef4c55c06fVikram S. Adve#endif 1030