X86InstrInfo.h revision beac75da3784929aee9f0357fc5cd76d49d6c3d7
13c827367444ee418f129b2c238299f49d3264554Jarkko Poyry//===- X86InstrInfo.h - X86 Instruction Information ------------*- C++ -*- ===// 23c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// 33c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// The LLVM Compiler Infrastructure 43c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// 53c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// This file is distributed under the University of Illinois Open Source 63c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// License. See LICENSE.TXT for details. 73c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// 83c827367444ee418f129b2c238299f49d3264554Jarkko Poyry//===----------------------------------------------------------------------===// 93c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// 103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// This file contains the X86 implementation of the TargetInstrInfo class. 113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry// 123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry//===----------------------------------------------------------------------===// 133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#ifndef X86INSTRUCTIONINFO_H 153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#define X86INSTRUCTIONINFO_H 163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#include "llvm/Target/TargetInstrInfo.h" 183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#include "X86.h" 193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#include "X86RegisterInfo.h" 203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#include "llvm/ADT/DenseMap.h" 213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 223c827367444ee418f129b2c238299f49d3264554Jarkko Poyrynamespace llvm { 233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry class X86RegisterInfo; 243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry class X86TargetMachine; 253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 263c827367444ee418f129b2c238299f49d3264554Jarkko Poyrynamespace X86 { 273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Enums for memory operand decoding. Each memory operand is represented with 283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // a 5 operand sequence in the form: 293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // [BaseReg, ScaleAmt, IndexReg, Disp, Segment] 303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // These enums help decode this. 313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry enum { 323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrBaseReg = 0, 333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrScaleAmt = 1, 343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrIndexReg = 2, 353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrDisp = 3, 363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// AddrSegmentReg - The operand # of the segment in the memory operand. 383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrSegmentReg = 4, 393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// AddrNumOperands - Total number of operands in a memory reference. 413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddrNumOperands = 5 423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry }; 433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // X86 specific condition code. These correspond to X86_*_COND in 463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // X86InstrInfo.td. They must be kept in synch. 473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry enum CondCode { 483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_A = 0, 493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_AE = 1, 503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_B = 2, 513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_BE = 3, 523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_E = 4, 533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_G = 5, 543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_GE = 6, 553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_L = 7, 563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_LE = 8, 573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NE = 9, 583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NO = 10, 593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NP = 11, 603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NS = 12, 613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_O = 13, 623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_P = 14, 633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_S = 15, 643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Artificial condition codes. These are used by AnalyzeBranch 663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // to indicate a block terminated with two conditional branches to 673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // the same location. This occurs in code using FCMP_OEQ or FCMP_UNE, 683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // which can't be represented on x86 with a single condition. These 693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // are never used in MachineInstrs. 703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NE_OR_P, 713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_NP_OR_E, 723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry COND_INVALID 743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry }; 753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Turn condition code into conditional branch opcode. 773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned GetCondBranchFromCond(CondCode CC); 783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// GetOppositeBranchCondition - Return the inverse of the specified cond, 803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// e.g. turning COND_E to COND_NE. 813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry CondCode GetOppositeBranchCondition(X86::CondCode CC); 823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// X86II - This namespace holds all of the target specific flags that 863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// instruction info tracks. 873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// 883c827367444ee418f129b2c238299f49d3264554Jarkko Poyrynamespace X86II { 893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// Target Operand Flag enum. 903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry enum TOF { 913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // X86 Specific MachineOperand flags. 933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_NO_FLAG, 953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_GOT_ABSOLUTE_ADDRESS - On a symbol operand, this represents a 973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// relocation of: 983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL + [. - PICBASELABEL] 993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_GOT_ABSOLUTE_ADDRESS, 1003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_PIC_BASE_OFFSET - On a symbol operand this indicates that the 1023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// immediate should get the value of the symbol minus the PIC base label: 1033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL - PICBASELABEL 1043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_PIC_BASE_OFFSET, 1053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_GOT - On a symbol operand this indicates that the immediate is the 1073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// offset to the GOT entry for the symbol name from the base of the GOT. 1083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See the X86-64 ELF ABI supplement for more details. 1103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @GOT 1113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_GOT, 1123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_GOTOFF - On a symbol operand this indicates that the immediate is 1143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the offset to the location of the symbol name from the base of the GOT. 1153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See the X86-64 ELF ABI supplement for more details. 1173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @GOTOFF 1183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_GOTOFF, 1193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_GOTPCREL - On a symbol operand this indicates that the immediate is 1213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// offset to the GOT entry for the symbol name from the current code 1223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// location. 1233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See the X86-64 ELF ABI supplement for more details. 1253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @GOTPCREL 1263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_GOTPCREL, 1273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_PLT - On a symbol operand this indicates that the immediate is 1293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// offset to the PLT entry of symbol name from the current code location. 1303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See the X86-64 ELF ABI supplement for more details. 1323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @PLT 1333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_PLT, 1343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_TLSGD - On a symbol operand this indicates that the immediate is 1363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See 'ELF Handling for Thread-Local Storage' for more details. 1393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @TLSGD 1403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_TLSGD, 1413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_GOTTPOFF - On a symbol operand this indicates that the immediate is 1433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See 'ELF Handling for Thread-Local Storage' for more details. 1463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @GOTTPOFF 1473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_GOTTPOFF, 1483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_INDNTPOFF - On a symbol operand this indicates that the immediate is 1503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See 'ELF Handling for Thread-Local Storage' for more details. 1533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @INDNTPOFF 1543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_INDNTPOFF, 1553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_TPOFF - On a symbol operand this indicates that the immediate is 1573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See 'ELF Handling for Thread-Local Storage' for more details. 1603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @TPOFF 1613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_TPOFF, 1623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_NTPOFF - On a symbol operand this indicates that the immediate is 1643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// See 'ELF Handling for Thread-Local Storage' for more details. 1673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SYMBOL_LABEL @NTPOFF 1683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_NTPOFF, 1693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_DLLIMPORT - On a symbol operand "FOO", this indicates that the 1713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reference is actually to the "__imp_FOO" symbol. This is used for 1723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// dllimport linkage on windows. 1733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_DLLIMPORT, 1743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_DARWIN_STUB - On a symbol operand "FOO", this indicates that the 1763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reference is actually to the "FOO$stub" symbol. This is used for calls 1773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// and jumps to external functions on Tiger and before. 1783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_DARWIN_STUB, 1793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_DARWIN_NONLAZY - On a symbol operand "FOO", this indicates that the 1813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reference is actually to the "FOO$non_lazy_ptr" symbol, which is a 1823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// non-PIC-base-relative reference to a non-hidden dyld lazy pointer stub. 1833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_DARWIN_NONLAZY, 1843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_DARWIN_NONLAZY_PIC_BASE - On a symbol operand "FOO", this indicates 1863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// that the reference is actually to "FOO$non_lazy_ptr - PICBASE", which is 1873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// a PIC-base-relative reference to a non-hidden dyld lazy pointer stub. 1883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_DARWIN_NONLAZY_PIC_BASE, 1893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE - On a symbol operand "FOO", this 1913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// indicates that the reference is actually to "FOO$non_lazy_ptr -PICBASE", 1923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// which is a PIC-base-relative reference to a hidden dyld lazy pointer 1933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// stub. 1943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE, 1953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 1963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_TLVP - On a symbol operand this indicates that the immediate is 1973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// some TLS offset. 1983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 1993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// This is the TLS offset for the Darwin TLS mechanism. 2003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_TLVP, 2013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MO_TLVP_PIC_BASE - On a symbol operand this indicates that the immediate 2033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// is some TLS offset from the picbase. 2043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// This is the 32-bit TLS offset for Darwin TLS in PIC mode. 2063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO_TLVP_PIC_BASE 2073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry }; 2083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 2093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// isGlobalStubReference - Return true if the specified TargetFlag operand is 2113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// a reference to a stub for a global, not the global itself. 2123c827367444ee418f129b2c238299f49d3264554Jarkko Poyryinline static bool isGlobalStubReference(unsigned char TargetFlag) { 2133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry switch (TargetFlag) { 2143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DLLIMPORT: // dllimport stub. 2153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_GOTPCREL: // rip-relative GOT reference. 2163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_GOT: // normal GOT reference. 2173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DARWIN_NONLAZY_PIC_BASE: // Normal $non_lazy_ptr ref. 2183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DARWIN_NONLAZY: // Normal $non_lazy_ptr ref. 2193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: // Hidden $non_lazy_ptr ref. 2203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return true; 2213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry default: 2223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return false; 2233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 2243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 2253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// isGlobalRelativeToPICBase - Return true if the specified global value 2273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// reference is relative to a 32-bit PIC base (X86ISD::GlobalBaseReg). If this 2283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// is true, the addressing mode has the PIC base register added in (e.g. EBX). 2293c827367444ee418f129b2c238299f49d3264554Jarkko Poyryinline static bool isGlobalRelativeToPICBase(unsigned char TargetFlag) { 2303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry switch (TargetFlag) { 2313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_GOTOFF: // isPICStyleGOT: local global. 2323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_GOT: // isPICStyleGOT: other global. 2333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_PIC_BASE_OFFSET: // Darwin local global. 2343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DARWIN_NONLAZY_PIC_BASE: // Darwin/32 external global. 2353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_DARWIN_HIDDEN_NONLAZY_PIC_BASE: // Darwin/32 hidden global. 2363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MO_TLVP: // ??? Pretty sure.. 2373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return true; 2383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry default: 2393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return false; 2403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 2413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 2423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// X86II - This namespace holds all of the target specific flags that 2443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// instruction info tracks. 2453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry/// 2463c827367444ee418f129b2c238299f49d3264554Jarkko Poyrynamespace X86II { 2473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry enum { 2483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 2493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Instruction encodings. These are the standard/most common forms for X86 2503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instructions. 2513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 2523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // PseudoFrm - This represents an instruction that is a pseudo instruction 2543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // or one that has not been implemented yet. It is illegal to code generate 2553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // it, but tolerated for intermediate implementation stages. 2563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Pseudo = 0, 2573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// Raw - This form is for instructions that don't have any operands, so 2593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// they are just a fixed opcode value, like 'leave'. 2603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry RawFrm = 1, 2613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// AddRegFrm - This form is used for instructions like 'push r32' that have 2633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// their one register operand added to their opcode. 2643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AddRegFrm = 2, 2653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MRMDestReg - This form is used for instructions that use the Mod/RM byte 2673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to specify a destination, which in this case is a register. 2683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRMDestReg = 3, 2703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MRMDestMem - This form is used for instructions that use the Mod/RM byte 2723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to specify a destination, which in this case is memory. 2733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRMDestMem = 4, 2753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MRMSrcReg - This form is used for instructions that use the Mod/RM byte 2773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to specify a source, which in this case is a register. 2783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRMSrcReg = 5, 2803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MRMSrcMem - This form is used for instructions that use the Mod/RM byte 2823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to specify a source, which in this case is memory. 2833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRMSrcMem = 6, 2853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MRM[0-7][rm] - These forms are used to represent instructions that use 2873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// a Mod/RM byte, and use the middle field to hold extended opcode 2883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// information. In the intel manual these are represented as /0, /1, ... 2893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 2903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // First, instructions that operate on a register r/m operand... 2923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM0r = 16, MRM1r = 17, MRM2r = 18, MRM3r = 19, // Format /0 /1 /2 /3 2933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM4r = 20, MRM5r = 21, MRM6r = 22, MRM7r = 23, // Format /4 /5 /6 /7 2943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Next, instructions that operate on a memory r/m operand... 2963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM0m = 24, MRM1m = 25, MRM2m = 26, MRM3m = 27, // Format /0 /1 /2 /3 2973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM4m = 28, MRM5m = 29, MRM6m = 30, MRM7m = 31, // Format /4 /5 /6 /7 2983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 2993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // MRMInitReg - This form is used for instructions whose source and 3003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // destinations are the same register. 3013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRMInitReg = 32, 3023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //// MRM_C1 - A mod/rm byte of exactly 0xC1. 3043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C1 = 33, 3053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C2 = 34, 3063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C3 = 35, 3073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C4 = 36, 3083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C8 = 37, 3093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_C9 = 38, 3103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_E8 = 39, 3113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_F0 = 40, 3123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_F8 = 41, 3133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MRM_F9 = 42, 3143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// RawFrmImm16 - This is used for CALL FAR instructions, which have two 3163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// immediates, the first of which is a 16 or 32-bit immediate (specified by 3173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the imm encoding) and the second is a 16-bit fixed value. In the AMD 3183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// manual, this operand is described as pntr16:32 and pntr16:16 3193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry RawFrmImm16 = 43, 3203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry FormMask = 63, 3223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 3243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Actual flags... 3253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // OpSize - Set if this instruction requires an operand size prefix (0x66), 3273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // which most often indicates that the instruction operates on 16 bit data 3283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instead of 32 bit data. 3293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry OpSize = 1 << 6, 3303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // AsSize - Set if this instruction requires an operand size prefix (0x67), 3323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // which most often indicates that the instruction address 16 bit address 3333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instead of 32 bit address (or 32 bit address in 64 bit mode). 3343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AdSize = 1 << 7, 3353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 3373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Op0Mask - There are several prefix bytes that are used to form two byte 3383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // opcodes. These are currently 0x0F, 0xF3, and 0xD8-0xDF. This mask is 3393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // used to obtain the setting of this field. If no bits in this field is 3403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // set, there is no prefix byte for obtaining a multibyte opcode. 3413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 3423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Op0Shift = 8, 3433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Op0Mask = 0xF << Op0Shift, 3443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // TB - TwoByte - Set if this instruction has a two byte opcode, which 3463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // starts with a 0x0F byte before the real opcode. 3473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry TB = 1 << Op0Shift, 3483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // REP - The 0xF3 prefix byte indicating repetition of the following 3503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instruction. 3513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry REP = 2 << Op0Shift, 3523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // D8-DF - These escape opcodes are used by the floating point unit. These 3543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // values must remain sequential. 3553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry D8 = 3 << Op0Shift, D9 = 4 << Op0Shift, 3563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DA = 5 << Op0Shift, DB = 6 << Op0Shift, 3573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DC = 7 << Op0Shift, DD = 8 << Op0Shift, 3583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DE = 9 << Op0Shift, DF = 10 << Op0Shift, 3593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // XS, XD - These prefix codes are for single and double precision scalar 3613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // floating point operations performed in the SSE registers. 3623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry XD = 11 << Op0Shift, XS = 12 << Op0Shift, 3633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // T8, TA - Prefix after the 0x0F prefix. 3653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry T8 = 13 << Op0Shift, TA = 14 << Op0Shift, 3663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // TF - Prefix before and after 0x0F 3683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry TF = 15 << Op0Shift, 3693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 3713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // REX_W - REX prefixes are instruction prefixes used in 64-bit mode. 3723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // They are used to specify GPRs and SSE registers, 64-bit operand size, 3733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // etc. We only cares about REX.W and REX.R bits and only the former is 3743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // statically determined. 3753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 3763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry REXShift = 12, 3773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry REX_W = 1 << REXShift, 3783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 3803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // This three-bit field describes the size of an immediate operand. Zero is 3813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // unused so that we can tell if we forgot to set a value. 3823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry ImmShift = 13, 3833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry ImmMask = 7 << ImmShift, 3843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm8 = 1 << ImmShift, 3853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm8PCRel = 2 << ImmShift, 3863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm16 = 3 << ImmShift, 3873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm16PCRel = 4 << ImmShift, 3883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm32 = 5 << ImmShift, 3893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm32PCRel = 6 << ImmShift, 3903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry Imm64 = 7 << ImmShift, 3913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 3933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // FP Instruction Classification... Zero is non-fp instruction. 3943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // FPTypeMask - Mask for all of the FP types... 3963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry FPTypeShift = 16, 3973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry FPTypeMask = 7 << FPTypeShift, 3983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 3993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // NotFP - The default, set for instructions that do not use FP registers. 4003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry NotFP = 0 << FPTypeShift, 4013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // ZeroArgFP - 0 arg FP instruction which implicitly pushes ST(0), f.e. fld0 4033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry ZeroArgFP = 1 << FPTypeShift, 4043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // OneArgFP - 1 arg FP instructions which implicitly read ST(0), such as fst 4063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry OneArgFP = 2 << FPTypeShift, 4073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // OneArgFPRW - 1 arg FP instruction which implicitly read ST(0) and write a 4093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // result back to ST(0). For example, fcos, fsqrt, etc. 4103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 4113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry OneArgFPRW = 3 << FPTypeShift, 4123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // TwoArgFP - 2 arg FP instructions which implicitly read ST(0), and an 4143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // explicit argument, storing the result to either ST(0) or the implicit 4153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // argument. For example: fadd, fsub, fmul, etc... 4163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry TwoArgFP = 4 << FPTypeShift, 4173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // CompareFP - 2 arg FP instructions which implicitly read ST(0) and an 4193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // explicit argument, but have no destination. Example: fucom, fucomi, ... 4203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry CompareFP = 5 << FPTypeShift, 4213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // CondMovFP - "2 operand" floating point conditional move instructions. 4233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry CondMovFP = 6 << FPTypeShift, 4243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // SpecialFP - Special instruction forms. Dispatch by opcode explicitly. 4263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SpecialFP = 7 << FPTypeShift, 4273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Lock prefix 4293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry LOCKShift = 19, 4303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry LOCK = 1 << LOCKShift, 4313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Segment override prefixes. Currently we just need ability to address 4333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // stuff in gs and fs segments. 4343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SegOvrShift = 20, 4353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SegOvrMask = 3 << SegOvrShift, 4363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry FS = 1 << SegOvrShift, 4373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry GS = 2 << SegOvrShift, 4383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Execution domain for SSE instructions in bits 22, 23. 4403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 0 in bits 22-23 means normal, non-SSE instruction. 4413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SSEDomainShift = 22, 4423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry OpcodeShift = 24, 4443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry OpcodeMask = 0xFF << OpcodeShift, 4453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //===------------------------------------------------------------------===// 4473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // VEX - The opcode prefix used by AVX instructions 4483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry VEX = 1U << 0, 4493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // VEX_W - Has a opcode specific functionality, but is used in the same 4513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // way as REX_W is for regular SSE instructions. 4523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry VEX_W = 1U << 1, 4533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // VEX_4V - Used to specify an additional AVX/SSE register. Several 2 4553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // address instructions in SSE are represented as 3 address ones in AVX 4563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // and the additional register is encoded in VEX_VVVV prefix. 4573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry VEX_4V = 1U << 2, 4583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // VEX_I8IMM - Specifies that the last register used in a AVX instruction, 4603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // must be encoded in the i8 immediate field. This usually happens in 4613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instructions with 4 operands. 4623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry VEX_I8IMM = 1U << 3, 4633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // VEX_L - Stands for a bit in the VEX opcode prefix meaning the current 4653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // instruction uses 256-bit wide registers. This is usually auto detected if 4663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // a VR256 register is used, but some AVX instructions also have this field 4673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // marked when using a f256 memory references. 4683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry VEX_L = 1U << 4 4693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry }; 4703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // getBaseOpcodeFor - This function returns the "base" X86 opcode for the 4723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // specified machine instruction. 4733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // 4743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static inline unsigned char getBaseOpcodeFor(uint64_t TSFlags) { 4753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return TSFlags >> X86II::OpcodeShift; 4763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 4773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static inline bool hasImm(uint64_t TSFlags) { 4793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return (TSFlags & X86II::ImmMask) != 0; 4803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 4813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// getSizeOfImm - Decode the "size of immediate" field from the TSFlags field 4833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// of the specified instruction. 4843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static inline unsigned getSizeOfImm(uint64_t TSFlags) { 4853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry switch (TSFlags & X86II::ImmMask) { 4863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry default: assert(0 && "Unknown immediate size"); 4873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm8: 4883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm8PCRel: return 1; 4893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm16: 4903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm16PCRel: return 2; 4913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm32: 4923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm32PCRel: return 4; 4933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm64: return 8; 4943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 4953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 4963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 4973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isImmPCRel - Return true if the immediate of the specified instruction's 4983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// TSFlags indicates that it is pc relative. 4993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static inline unsigned isImmPCRel(uint64_t TSFlags) { 5003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry switch (TSFlags & X86II::ImmMask) { 5013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry default: assert(0 && "Unknown immediate size"); 5023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm8PCRel: 5033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm16PCRel: 5043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm32PCRel: 5053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return true; 5063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm8: 5073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm16: 5083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm32: 5093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Imm64: 5103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return false; 5113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 5123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 5133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// getMemoryOperandNo - The function returns the MCInst operand # for the 5153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// first field of the memory operand. If the instruction doesn't have a 5163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// memory operand, this returns -1. 5173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 5183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// Note that this ignores tied operands. If there is a tied register which 5193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// is duplicated in the MCInst (e.g. "EAX = addl EAX, [mem]") it is only 5203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// counted as one operand. 5213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 5223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static inline int getMemoryOperandNo(uint64_t TSFlags) { 5233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry switch (TSFlags & X86II::FormMask) { 5243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRMInitReg: assert(0 && "FIXME: Remove this form"); 5253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry default: assert(0 && "Unknown FormMask value in getMemoryOperandNo!"); 5263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::Pseudo: 5273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::RawFrm: 5283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::AddRegFrm: 5293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRMDestReg: 5303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRMSrcReg: 5313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::RawFrmImm16: 5323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return -1; 5333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRMDestMem: 5343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return 0; 5353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRMSrcMem: { 5363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool HasVEX_4V = (TSFlags >> 32) & X86II::VEX_4V; 5373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned FirstMemOp = 1; 5383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry if (HasVEX_4V) 5393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry ++FirstMemOp;// Skip the register source (which is encoded in VEX_VVVV). 5403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // FIXME: Maybe lea should have its own form? This is a horrible hack. 5423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry //if (Opcode == X86::LEA64r || Opcode == X86::LEA64_32r || 5433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Opcode == X86::LEA16r || Opcode == X86::LEA32r) 5443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return FirstMemOp; 5453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 5463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM0r: case X86II::MRM1r: 5473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM2r: case X86II::MRM3r: 5483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM4r: case X86II::MRM5r: 5493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM6r: case X86II::MRM7r: 5503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return -1; 5513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM0m: case X86II::MRM1m: 5523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM2m: case X86II::MRM3m: 5533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM4m: case X86II::MRM5m: 5543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM6m: case X86II::MRM7m: 5553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return 0; 5563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C1: 5573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C2: 5583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C3: 5593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C4: 5603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C8: 5613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_C9: 5623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_E8: 5633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_F0: 5643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_F8: 5653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry case X86II::MRM_F9: 5663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return -1; 5673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 5683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 5693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 5703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5713c827367444ee418f129b2c238299f49d3264554Jarkko Poyryinline static bool isScale(const MachineOperand &MO) { 5723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return MO.isImm() && 5733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry (MO.getImm() == 1 || MO.getImm() == 2 || 5743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MO.getImm() == 4 || MO.getImm() == 8); 5753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 5763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5773c827367444ee418f129b2c238299f49d3264554Jarkko Poyryinline static bool isLeaMem(const MachineInstr *MI, unsigned Op) { 5783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry if (MI->getOperand(Op).isFI()) return true; 5793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return Op+4 <= MI->getNumOperands() && 5803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op ).isReg() && isScale(MI->getOperand(Op+1)) && 5813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op+2).isReg() && 5823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry (MI->getOperand(Op+3).isImm() || 5833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op+3).isGlobal() || 5843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op+3).isCPI() || 5853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op+3).isJTI()); 5863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 5873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5883c827367444ee418f129b2c238299f49d3264554Jarkko Poyryinline static bool isMem(const MachineInstr *MI, unsigned Op) { 5893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry if (MI->getOperand(Op).isFI()) return true; 5903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return Op+5 <= MI->getNumOperands() && 5913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MI->getOperand(Op+4).isReg() && 5923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry isLeaMem(MI, Op); 5933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} 5943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5953c827367444ee418f129b2c238299f49d3264554Jarkko Poyryclass X86InstrInfo : public TargetInstrInfoImpl { 5963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry X86TargetMachine &TM; 5973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const X86RegisterInfo RI; 5983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 5993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// RegOp2MemOpTable2Addr, RegOp2MemOpTable0, RegOp2MemOpTable1, 6003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// RegOp2MemOpTable2 - Load / store folding opcode maps. 6013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DenseMap<unsigned*, std::pair<unsigned,unsigned> > RegOp2MemOpTable2Addr; 6033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DenseMap<unsigned*, std::pair<unsigned,unsigned> > RegOp2MemOpTable0; 6043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DenseMap<unsigned*, std::pair<unsigned,unsigned> > RegOp2MemOpTable1; 6053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DenseMap<unsigned*, std::pair<unsigned,unsigned> > RegOp2MemOpTable2; 6063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// MemOp2RegOpTable - Load / store unfolding opcode map. 6083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DenseMap<unsigned*, std::pair<unsigned, unsigned> > MemOp2RegOpTable; 6103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6113c827367444ee418f129b2c238299f49d3264554Jarkko Poyrypublic: 6123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry explicit X86InstrInfo(X86TargetMachine &tm); 6133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// getRegisterInfo - TargetInstrInfo is a superset of MRegister info. As 6153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// such, whenever a client has an instance of instruction info, it should 6163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// always be able to get register info as well (through this method). 6173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual const X86RegisterInfo &getRegisterInfo() const { return RI; } 6193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isCoalescableExtInstr - Return true if the instruction is a "coalescable" 6213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// extension instruction. That is, it's like a copy where it's legal for the 6223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// source to overlap the destination. e.g. X86::MOVSX64rr32. If this returns 6233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// true, then it's expected the pre-extension value is available as a subreg 6243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// of the result register. This also returns the sub-register index in 6253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SubIdx. 6263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool isCoalescableExtInstr(const MachineInstr &MI, 6273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned &SrcReg, unsigned &DstReg, 6283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned &SubIdx) const; 6293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned isLoadFromStackSlot(const MachineInstr *MI, int &FrameIndex) const; 6313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isLoadFromStackSlotPostFE - Check for post-frame ptr elimination 6323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// stack locations as well. This uses a heuristic so it isn't 6333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reliable for correctness. 6343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned isLoadFromStackSlotPostFE(const MachineInstr *MI, 6353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int &FrameIndex) const; 6363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// hasLoadFromStackSlot - If the specified machine instruction has 6383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// a load from a stack slot, return true along with the FrameIndex 6393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// of the loaded stack slot and the machine mem operand containing 6403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the reference. If not, return false. Unlike 6413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isLoadFromStackSlot, this returns true for any instructions that 6423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// loads from the stack. This is a hint only and may not catch all 6433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// cases. 6443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool hasLoadFromStackSlot(const MachineInstr *MI, 6453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const MachineMemOperand *&MMO, 6463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int &FrameIndex) const; 6473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned isStoreToStackSlot(const MachineInstr *MI, int &FrameIndex) const; 6493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isStoreToStackSlotPostFE - Check for post-frame ptr elimination 6503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// stack locations as well. This uses a heuristic so it isn't 6513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reliable for correctness. 6523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned isStoreToStackSlotPostFE(const MachineInstr *MI, 6533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int &FrameIndex) const; 6543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// hasStoreToStackSlot - If the specified machine instruction has a 6563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// store to a stack slot, return true along with the FrameIndex of 6573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the loaded stack slot and the machine mem operand containing the 6583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// reference. If not, return false. Unlike isStoreToStackSlot, 6593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// this returns true for any instructions that loads from the 6603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// stack. This is a hint only and may not catch all cases. 6613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool hasStoreToStackSlot(const MachineInstr *MI, 6623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const MachineMemOperand *&MMO, 6633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int &FrameIndex) const; 6643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool isReallyTriviallyReMaterializable(const MachineInstr *MI, 6663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry AliasAnalysis *AA) const; 6673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry void reMaterialize(MachineBasicBlock &MBB, MachineBasicBlock::iterator MI, 6683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned DestReg, unsigned SubIdx, 6693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const MachineInstr *Orig, 6703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterInfo &TRI) const; 6713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// convertToThreeAddress - This method must be implemented by targets that 6733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// set the M_CONVERTIBLE_TO_3_ADDR flag. When this flag is set, the target 6743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// may be able to convert a two-address instruction into a true 6753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// three-address instruction on demand. This allows the X86 target (for 6763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// example) to convert ADD and SHL instructions into LEA instructions if they 6773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// would require register copies due to two-addressness. 6783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// This method returns a null pointer if the transformation cannot be 6803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// performed, otherwise it returns the new instruction. 6813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual MachineInstr *convertToThreeAddress(MachineFunction::iterator &MFI, 6833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator &MBBI, 6843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry LiveVariables *LV) const; 6853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// commuteInstruction - We have a few instructions that must be hacked on to 6873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// commute them. 6883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 6893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual MachineInstr *commuteInstruction(MachineInstr *MI, bool NewMI) const; 6903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 6913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry // Branch analysis. 6923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool isUnpredicatedTerminator(const MachineInstr* MI) const; 6933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool AnalyzeBranch(MachineBasicBlock &MBB, MachineBasicBlock *&TBB, 6943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock *&FBB, 6953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineOperand> &Cond, 6963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool AllowModify) const; 6973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual unsigned RemoveBranch(MachineBasicBlock &MBB) const; 6983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual unsigned InsertBranch(MachineBasicBlock &MBB, MachineBasicBlock *TBB, 6993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock *FBB, 7003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const SmallVectorImpl<MachineOperand> &Cond, 7013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DebugLoc DL) const; 7023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void copyPhysReg(MachineBasicBlock &MBB, 7033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator MI, DebugLoc DL, 7043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned DestReg, unsigned SrcReg, 7053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool KillSrc) const; 7063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void storeRegToStackSlot(MachineBasicBlock &MBB, 7073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator MI, 7083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned SrcReg, bool isKill, int FrameIndex, 7093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterClass *RC, 7103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterInfo *TRI) const; 7113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void storeRegToAddr(MachineFunction &MF, unsigned SrcReg, bool isKill, 7133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineOperand> &Addr, 7143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterClass *RC, 7153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr::mmo_iterator MMOBegin, 7163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr::mmo_iterator MMOEnd, 7173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineInstr*> &NewMIs) const; 7183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void loadRegFromStackSlot(MachineBasicBlock &MBB, 7203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator MI, 7213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned DestReg, int FrameIndex, 7223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterClass *RC, 7233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterInfo *TRI) const; 7243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void loadRegFromAddr(MachineFunction &MF, unsigned DestReg, 7263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineOperand> &Addr, 7273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterClass *RC, 7283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr::mmo_iterator MMOBegin, 7293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr::mmo_iterator MMOEnd, 7303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineInstr*> &NewMIs) const; 7313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool spillCalleeSavedRegisters(MachineBasicBlock &MBB, 7333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator MI, 7343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const std::vector<CalleeSavedInfo> &CSI, 7353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterInfo *TRI) const; 7363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool restoreCalleeSavedRegisters(MachineBasicBlock &MBB, 7383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator MI, 7393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const std::vector<CalleeSavedInfo> &CSI, 7403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const TargetRegisterInfo *TRI) const; 7413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual 7433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr *emitFrameIndexDebugValue(MachineFunction &MF, 7443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int FrameIx, uint64_t Offset, 7453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const MDNode *MDPtr, 7463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry DebugLoc DL) const; 7473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// foldMemoryOperand - If this target supports it, fold a load or store of 7493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the specified stack slot into the specified machine instruction for the 7503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// specified operand(s). If this is possible, the target should perform the 7513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// folding and return true, otherwise it should return false. If it folds 7523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the instruction, it is likely that the MachineInstruction the iterator 7533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// references has been changed. 7543c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, 7553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr* MI, 7563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const SmallVectorImpl<unsigned> &Ops, 7573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int FrameIndex) const; 7583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// foldMemoryOperand - Same as the previous version except it allows folding 7603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// of any load and store from / to any address, not just from a specific 7613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// stack slot. 7623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, 7633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr* MI, 7643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const SmallVectorImpl<unsigned> &Ops, 7653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr* LoadMI) const; 7663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// canFoldMemoryOperand - Returns true if the specified load / store is 7683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// folding is possible. 7693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool canFoldMemoryOperand(const MachineInstr*, 7703c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const SmallVectorImpl<unsigned> &) const; 7713c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7723c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// unfoldMemoryOperand - Separate a single instruction which folded a load or 7733c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// a store or a load and a store into two or more instruction. If this is 7743c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// possible, returns true as well as the new instructions by reference. 7753c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool unfoldMemoryOperand(MachineFunction &MF, MachineInstr *MI, 7763c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned Reg, bool UnfoldLoad, bool UnfoldStore, 7773c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<MachineInstr*> &NewMIs) const; 7783c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7793c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool unfoldMemoryOperand(SelectionDAG &DAG, SDNode *N, 7803c827367444ee418f129b2c238299f49d3264554Jarkko Poyry SmallVectorImpl<SDNode*> &NewNodes) const; 7813c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7823c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// getOpcodeAfterMemoryUnfold - Returns the opcode of the would be new 7833c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// instruction after load / store are unfolded from an instruction of the 7843c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// specified opcode. It returns zero if the specified unfolding is not 7853c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// possible. If LoadRegIndex is non-null, it is filled in with the operand 7863c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// index of the operand which will hold the register holding the loaded 7873c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// value. 7883c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual unsigned getOpcodeAfterMemoryUnfold(unsigned Opc, 7893c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool UnfoldLoad, bool UnfoldStore, 7903c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned *LoadRegIndex = 0) const; 7913c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 7923c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// areLoadsFromSameBasePtr - This is used by the pre-regalloc scheduler 7933c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to determine if two loads are loading from the same base address. It 7943c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// should only return true if the base pointers are the same and the 7953c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// only differences between the two addresses are the offset. It also returns 7963c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the offsets by reference. 7973c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool areLoadsFromSameBasePtr(SDNode *Load1, SDNode *Load2, 7983c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int64_t &Offset1, int64_t &Offset2) const; 7993c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8003c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// shouldScheduleLoadsNear - This is a used by the pre-regalloc scheduler to 8013c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// determine (in conjuction with areLoadsFromSameBasePtr) if two loads should 8023c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// be scheduled togther. On some targets if two loads are loading from 8033c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// addresses in the same cache line, it's better if they are scheduled 8043c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// together. This function takes two integers that represent the load offsets 8053c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// from the common base address. It returns true if it decides it's desirable 8063c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// to schedule the two loads together. "NumLoads" is the number of loads that 8073c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// have already been scheduled after Load1. 8083c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual bool shouldScheduleLoadsNear(SDNode *Load1, SDNode *Load2, 8093c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int64_t Offset1, int64_t Offset2, 8103c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned NumLoads) const; 8113c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8123c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual void getNoopForMachoTarget(MCInst &NopInst) const; 8133c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8143c827367444ee418f129b2c238299f49d3264554Jarkko Poyry virtual 8153c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool ReverseBranchCondition(SmallVectorImpl<MachineOperand> &Cond) const; 8163c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8173c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isSafeToMoveRegClassDefs - Return true if it's safe to move a machine 8183c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// instruction that defines the specified register class. 8193c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool isSafeToMoveRegClassDefs(const TargetRegisterClass *RC) const; 8203c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8213c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static bool isX86_64NonExtLowByteReg(unsigned reg) { 8223c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return (reg == X86::SPL || reg == X86::BPL || 8233c827367444ee418f129b2c238299f49d3264554Jarkko Poyry reg == X86::SIL || reg == X86::DIL); 8243c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 8253c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8263c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static bool isX86_64ExtendedReg(const MachineOperand &MO) { 8273c827367444ee418f129b2c238299f49d3264554Jarkko Poyry if (!MO.isReg()) return false; 8283c827367444ee418f129b2c238299f49d3264554Jarkko Poyry return isX86_64ExtendedReg(MO.getReg()); 8293c827367444ee418f129b2c238299f49d3264554Jarkko Poyry } 8303c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8313c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isX86_64ExtendedReg - Is the MachineOperand a x86-64 extended (r8 or 8323c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// higher) register? e.g. r8, xmm8, xmm13, etc. 8333c827367444ee418f129b2c238299f49d3264554Jarkko Poyry static bool isX86_64ExtendedReg(unsigned RegNo); 8343c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8353c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// getGlobalBaseReg - Return a virtual register initialized with the 8363c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// the global base register value. Output instructions required to 8373c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// initialize the register in the function entry block, if necessary. 8383c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// 8393c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned getGlobalBaseReg(MachineFunction *MF) const; 8403c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8413c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// GetSSEDomain - Return the SSE execution domain of MI as the first element, 8423c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// and a bitmask of possible arguments to SetSSEDomain ase the second. 8433c827367444ee418f129b2c238299f49d3264554Jarkko Poyry std::pair<uint16_t, uint16_t> GetSSEDomain(const MachineInstr *MI) const; 8443c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8453c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// SetSSEDomain - Set the SSEDomain of MI. 8463c827367444ee418f129b2c238299f49d3264554Jarkko Poyry void SetSSEDomain(MachineInstr *MI, unsigned Domain) const; 8473c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8483c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr* foldMemoryOperandImpl(MachineFunction &MF, 8493c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr* MI, 8503c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned OpNum, 8513c827367444ee418f129b2c238299f49d3264554Jarkko Poyry const SmallVectorImpl<MachineOperand> &MOs, 8523c827367444ee418f129b2c238299f49d3264554Jarkko Poyry unsigned Size, unsigned Alignment) const; 8533c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8543c827367444ee418f129b2c238299f49d3264554Jarkko Poyryprivate: 8553c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineInstr * convertToThreeAddressWithLEA(unsigned MIOpc, 8563c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineFunction::iterator &MFI, 8573c827367444ee418f129b2c238299f49d3264554Jarkko Poyry MachineBasicBlock::iterator &MBBI, 8583c827367444ee418f129b2c238299f49d3264554Jarkko Poyry LiveVariables *LV) const; 8593c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8603c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// isFrameOperand - Return true and the FrameIndex if the specified 8613c827367444ee418f129b2c238299f49d3264554Jarkko Poyry /// operand and follow operands form a reference to the stack frame. 8623c827367444ee418f129b2c238299f49d3264554Jarkko Poyry bool isFrameOperand(const MachineInstr *MI, unsigned int Op, 8633c827367444ee418f129b2c238299f49d3264554Jarkko Poyry int &FrameIndex) const; 8643c827367444ee418f129b2c238299f49d3264554Jarkko Poyry}; 8653c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8663c827367444ee418f129b2c238299f49d3264554Jarkko Poyry} // End llvm namespace 8673c827367444ee418f129b2c238299f49d3264554Jarkko Poyry 8683c827367444ee418f129b2c238299f49d3264554Jarkko Poyry#endif 8693c827367444ee418f129b2c238299f49d3264554Jarkko Poyry