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llvm-mirror/lib/Target/ARM/MCTargetDesc/ARMBaseInfo.h
Jim Grosbach 3b5f99f716 ARM more NEON VLD/VST composite physical register refactoring. 
Register pair, all lanes subscripting.

llvm-svn: 152157
2012-03-06 23:10:38 +00:00

482 lines
15 KiB
C++
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//===-- ARMBaseInfo.h - Top level definitions for ARM -------- --*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains small standalone helper functions and enum definitions for
// the ARM target useful for the compiler back-end and the MC libraries.
// As such, it deliberately does not include references to LLVM core
// code gen types, passes, etc..
//
//===----------------------------------------------------------------------===//
#ifndef ARMBASEINFO_H
#define ARMBASEINFO_H
#include "ARMMCTargetDesc.h"
#include "llvm/Support/ErrorHandling.h"
namespace llvm {
// Enums corresponding to ARM condition codes
namespace ARMCC {
// The CondCodes constants map directly to the 4-bit encoding of the
// condition field for predicated instructions.
enum CondCodes { // Meaning (integer) Meaning (floating-point)
EQ, // Equal Equal
NE, // Not equal Not equal, or unordered
HS, // Carry set >, ==, or unordered
LO, // Carry clear Less than
MI, // Minus, negative Less than
PL, // Plus, positive or zero >, ==, or unordered
VS, // Overflow Unordered
VC, // No overflow Not unordered
HI, // Unsigned higher Greater than, or unordered
LS, // Unsigned lower or same Less than or equal
GE, // Greater than or equal Greater than or equal
LT, // Less than Less than, or unordered
GT, // Greater than Greater than
LE, // Less than or equal <, ==, or unordered
AL // Always (unconditional) Always (unconditional)
};
inline static CondCodes getOppositeCondition(CondCodes CC) {
switch (CC) {
default: llvm_unreachable("Unknown condition code");
case EQ: return NE;
case NE: return EQ;
case HS: return LO;
case LO: return HS;
case MI: return PL;
case PL: return MI;
case VS: return VC;
case VC: return VS;
case HI: return LS;
case LS: return HI;
case GE: return LT;
case LT: return GE;
case GT: return LE;
case LE: return GT;
}
}
} // namespace ARMCC
inline static const char *ARMCondCodeToString(ARMCC::CondCodes CC) {
switch (CC) {
case ARMCC::EQ: return "eq";
case ARMCC::NE: return "ne";
case ARMCC::HS: return "hs";
case ARMCC::LO: return "lo";
case ARMCC::MI: return "mi";
case ARMCC::PL: return "pl";
case ARMCC::VS: return "vs";
case ARMCC::VC: return "vc";
case ARMCC::HI: return "hi";
case ARMCC::LS: return "ls";
case ARMCC::GE: return "ge";
case ARMCC::LT: return "lt";
case ARMCC::GT: return "gt";
case ARMCC::LE: return "le";
case ARMCC::AL: return "al";
}
llvm_unreachable("Unknown condition code");
}
namespace ARM_PROC {
enum IMod {
IE = 2,
ID = 3
};
enum IFlags {
F = 1,
I = 2,
A = 4
};
inline static const char *IFlagsToString(unsigned val) {
switch (val) {
default: llvm_unreachable("Unknown iflags operand");
case F: return "f";
case I: return "i";
case A: return "a";
}
}
inline static const char *IModToString(unsigned val) {
switch (val) {
default: llvm_unreachable("Unknown imod operand");
case IE: return "ie";
case ID: return "id";
}
}
}
namespace ARM_MB {
// The Memory Barrier Option constants map directly to the 4-bit encoding of
// the option field for memory barrier operations.
enum MemBOpt {
SY = 15,
ST = 14,
ISH = 11,
ISHST = 10,
NSH = 7,
NSHST = 6,
OSH = 3,
OSHST = 2
};
inline static const char *MemBOptToString(unsigned val) {
switch (val) {
default: llvm_unreachable("Unknown memory operation");
case SY: return "sy";
case ST: return "st";
case ISH: return "ish";
case ISHST: return "ishst";
case NSH: return "nsh";
case NSHST: return "nshst";
case OSH: return "osh";
case OSHST: return "oshst";
}
}
} // namespace ARM_MB
/// getARMRegisterNumbering - Given the enum value for some register, e.g.
/// ARM::LR, return the number that it corresponds to (e.g. 14).
inline static unsigned getARMRegisterNumbering(unsigned Reg) {
using namespace ARM;
switch (Reg) {
default:
llvm_unreachable("Unknown ARM register!");
case R0: case S0: case D0: case Q0: return 0;
case R1: case S1: case D1: case Q1: return 1;
case R2: case S2: case D2: case Q2: return 2;
case R3: case S3: case D3: case Q3: return 3;
case R4: case S4: case D4: case Q4: return 4;
case R5: case S5: case D5: case Q5: return 5;
case R6: case S6: case D6: case Q6: return 6;
case R7: case S7: case D7: case Q7: return 7;
case R8: case S8: case D8: case Q8: return 8;
case R9: case S9: case D9: case Q9: return 9;
case R10: case S10: case D10: case Q10: return 10;
case R11: case S11: case D11: case Q11: return 11;
case R12: case S12: case D12: case Q12: return 12;
case SP: case S13: case D13: case Q13: return 13;
case LR: case S14: case D14: case Q14: return 14;
case PC: case S15: case D15: case Q15: return 15;
case S16: case D16: return 16;
case S17: case D17: return 17;
case S18: case D18: return 18;
case S19: case D19: return 19;
case S20: case D20: return 20;
case S21: case D21: return 21;
case S22: case D22: return 22;
case S23: case D23: return 23;
case S24: case D24: return 24;
case S25: case D25: return 25;
case S26: case D26: return 26;
case S27: case D27: return 27;
case S28: case D28: return 28;
case S29: case D29: return 29;
case S30: case D30: return 30;
case S31: case D31: return 31;
// Composite registers use the regnum of the first register in the list.
/* Q0 */ case D0_D2: return 0;
case D1_D2: case D1_D3: return 1;
/* Q1 */ case D2_D4: return 2;
case D3_D4: case D3_D5: return 3;
/* Q2 */ case D4_D6: return 4;
case D5_D6: case D5_D7: return 5;
/* Q3 */ case D6_D8: return 6;
case D7_D8: case D7_D9: return 7;
/* Q4 */ case D8_D10: return 8;
case D9_D10: case D9_D11: return 9;
/* Q5 */ case D10_D12: return 10;
case D11_D12: case D11_D13: return 11;
/* Q6 */ case D12_D14: return 12;
case D13_D14: case D13_D15: return 13;
/* Q7 */ case D14_D16: return 14;
case D15_D16: case D15_D17: return 15;
/* Q8 */ case D16_D18: return 16;
case D17_D18: case D17_D19: return 17;
/* Q9 */ case D18_D20: return 18;
case D19_D20: case D19_D21: return 19;
/* Q10 */ case D20_D22: return 20;
case D21_D22: case D21_D23: return 21;
/* Q11 */ case D22_D24: return 22;
case D23_D24: case D23_D25: return 23;
/* Q12 */ case D24_D26: return 24;
case D25_D26: case D25_D27: return 25;
/* Q13 */ case D26_D28: return 26;
case D27_D28: case D27_D29: return 27;
/* Q14 */ case D28_D30: return 28;
case D29_D30: case D29_D31: return 29;
/* Q15 */
}
}
/// isARMLowRegister - Returns true if the register is a low register (r0-r7).
///
static inline bool isARMLowRegister(unsigned Reg) {
using namespace ARM;
switch (Reg) {
case R0: case R1: case R2: case R3:
case R4: case R5: case R6: case R7:
return true;
default:
return false;
}
}
/// ARMII - This namespace holds all of the target specific flags that
/// instruction info tracks.
///
namespace ARMII {
/// ARM Index Modes
enum IndexMode {
IndexModeNone = 0,
IndexModePre = 1,
IndexModePost = 2,
IndexModeUpd = 3
};
/// ARM Addressing Modes
enum AddrMode {
AddrModeNone = 0,
AddrMode1 = 1,
AddrMode2 = 2,
AddrMode3 = 3,
AddrMode4 = 4,
AddrMode5 = 5,
AddrMode6 = 6,
AddrModeT1_1 = 7,
AddrModeT1_2 = 8,
AddrModeT1_4 = 9,
AddrModeT1_s = 10, // i8 * 4 for pc and sp relative data
AddrModeT2_i12 = 11,
AddrModeT2_i8 = 12,
AddrModeT2_so = 13,
AddrModeT2_pc = 14, // +/- i12 for pc relative data
AddrModeT2_i8s4 = 15, // i8 * 4
AddrMode_i12 = 16
};
inline static const char *AddrModeToString(AddrMode addrmode) {
switch (addrmode) {
case AddrModeNone: return "AddrModeNone";
case AddrMode1: return "AddrMode1";
case AddrMode2: return "AddrMode2";
case AddrMode3: return "AddrMode3";
case AddrMode4: return "AddrMode4";
case AddrMode5: return "AddrMode5";
case AddrMode6: return "AddrMode6";
case AddrModeT1_1: return "AddrModeT1_1";
case AddrModeT1_2: return "AddrModeT1_2";
case AddrModeT1_4: return "AddrModeT1_4";
case AddrModeT1_s: return "AddrModeT1_s";
case AddrModeT2_i12: return "AddrModeT2_i12";
case AddrModeT2_i8: return "AddrModeT2_i8";
case AddrModeT2_so: return "AddrModeT2_so";
case AddrModeT2_pc: return "AddrModeT2_pc";
case AddrModeT2_i8s4: return "AddrModeT2_i8s4";
case AddrMode_i12: return "AddrMode_i12";
}
}
/// Target Operand Flag enum.
enum TOF {
//===------------------------------------------------------------------===//
// ARM Specific MachineOperand flags.
MO_NO_FLAG,
/// MO_LO16 - On a symbol operand, this represents a relocation containing
/// lower 16 bit of the address. Used only via movw instruction.
MO_LO16,
/// MO_HI16 - On a symbol operand, this represents a relocation containing
/// higher 16 bit of the address. Used only via movt instruction.
MO_HI16,
/// MO_LO16_NONLAZY - On a symbol operand "FOO", this represents a
/// relocation containing lower 16 bit of the non-lazy-ptr indirect symbol,
/// i.e. "FOO$non_lazy_ptr".
/// Used only via movw instruction.
MO_LO16_NONLAZY,
/// MO_HI16_NONLAZY - On a symbol operand "FOO", this represents a
/// relocation containing lower 16 bit of the non-lazy-ptr indirect symbol,
/// i.e. "FOO$non_lazy_ptr". Used only via movt instruction.
MO_HI16_NONLAZY,
/// MO_LO16_NONLAZY_PIC - On a symbol operand "FOO", this represents a
/// relocation containing lower 16 bit of the PC relative address of the
/// non-lazy-ptr indirect symbol, i.e. "FOO$non_lazy_ptr - LABEL".
/// Used only via movw instruction.
MO_LO16_NONLAZY_PIC,
/// MO_HI16_NONLAZY_PIC - On a symbol operand "FOO", this represents a
/// relocation containing lower 16 bit of the PC relative address of the
/// non-lazy-ptr indirect symbol, i.e. "FOO$non_lazy_ptr - LABEL".
/// Used only via movt instruction.
MO_HI16_NONLAZY_PIC,
/// MO_PLT - On a symbol operand, this represents an ELF PLT reference on a
/// call operand.
MO_PLT
};
enum {
//===------------------------------------------------------------------===//
// Instruction Flags.
//===------------------------------------------------------------------===//
// This four-bit field describes the addressing mode used.
AddrModeMask = 0x1f, // The AddrMode enums are declared in ARMBaseInfo.h
// IndexMode - Unindex, pre-indexed, or post-indexed are valid for load
// and store ops only. Generic "updating" flag is used for ld/st multiple.
// The index mode enums are declared in ARMBaseInfo.h
IndexModeShift = 5,
IndexModeMask = 3 << IndexModeShift,
//===------------------------------------------------------------------===//
// Instruction encoding formats.
//
FormShift = 7,
FormMask = 0x3f << FormShift,
// Pseudo instructions
Pseudo = 0 << FormShift,
// Multiply instructions
MulFrm = 1 << FormShift,
// Branch instructions
BrFrm = 2 << FormShift,
BrMiscFrm = 3 << FormShift,
// Data Processing instructions
DPFrm = 4 << FormShift,
DPSoRegFrm = 5 << FormShift,
// Load and Store
LdFrm = 6 << FormShift,
StFrm = 7 << FormShift,
LdMiscFrm = 8 << FormShift,
StMiscFrm = 9 << FormShift,
LdStMulFrm = 10 << FormShift,
LdStExFrm = 11 << FormShift,
// Miscellaneous arithmetic instructions
ArithMiscFrm = 12 << FormShift,
SatFrm = 13 << FormShift,
// Extend instructions
ExtFrm = 14 << FormShift,
// VFP formats
VFPUnaryFrm = 15 << FormShift,
VFPBinaryFrm = 16 << FormShift,
VFPConv1Frm = 17 << FormShift,
VFPConv2Frm = 18 << FormShift,
VFPConv3Frm = 19 << FormShift,
VFPConv4Frm = 20 << FormShift,
VFPConv5Frm = 21 << FormShift,
VFPLdStFrm = 22 << FormShift,
VFPLdStMulFrm = 23 << FormShift,
VFPMiscFrm = 24 << FormShift,
// Thumb format
ThumbFrm = 25 << FormShift,
// Miscelleaneous format
MiscFrm = 26 << FormShift,
// NEON formats
NGetLnFrm = 27 << FormShift,
NSetLnFrm = 28 << FormShift,
NDupFrm = 29 << FormShift,
NLdStFrm = 30 << FormShift,
N1RegModImmFrm= 31 << FormShift,
N2RegFrm = 32 << FormShift,
NVCVTFrm = 33 << FormShift,
NVDupLnFrm = 34 << FormShift,
N2RegVShLFrm = 35 << FormShift,
N2RegVShRFrm = 36 << FormShift,
N3RegFrm = 37 << FormShift,
N3RegVShFrm = 38 << FormShift,
NVExtFrm = 39 << FormShift,
NVMulSLFrm = 40 << FormShift,
NVTBLFrm = 41 << FormShift,
//===------------------------------------------------------------------===//
// Misc flags.
// UnaryDP - Indicates this is a unary data processing instruction, i.e.
// it doesn't have a Rn operand.
UnaryDP = 1 << 13,
// Xform16Bit - Indicates this Thumb2 instruction may be transformed into
// a 16-bit Thumb instruction if certain conditions are met.
Xform16Bit = 1 << 14,
// ThumbArithFlagSetting - The instruction is a 16-bit flag setting Thumb
// instruction. Used by the parser to determine whether to require the 'S'
// suffix on the mnemonic (when not in an IT block) or preclude it (when
// in an IT block).
ThumbArithFlagSetting = 1 << 18,
//===------------------------------------------------------------------===//
// Code domain.
DomainShift = 15,
DomainMask = 7 << DomainShift,
DomainGeneral = 0 << DomainShift,
DomainVFP = 1 << DomainShift,
DomainNEON = 2 << DomainShift,
DomainNEONA8 = 4 << DomainShift,
//===------------------------------------------------------------------===//
// Field shifts - such shifts are used to set field while generating
// machine instructions.
//
// FIXME: This list will need adjusting/fixing as the MC code emitter
// takes shape and the ARMCodeEmitter.cpp bits go away.
ShiftTypeShift = 4,
M_BitShift = 5,
ShiftImmShift = 5,
ShiftShift = 7,
N_BitShift = 7,
ImmHiShift = 8,
SoRotImmShift = 8,
RegRsShift = 8,
ExtRotImmShift = 10,
RegRdLoShift = 12,
RegRdShift = 12,
RegRdHiShift = 16,
RegRnShift = 16,
S_BitShift = 20,
W_BitShift = 21,
AM3_I_BitShift = 22,
D_BitShift = 22,
U_BitShift = 23,
P_BitShift = 24,
I_BitShift = 25,
CondShift = 28
};
} // end namespace ARMII
} // end namespace llvm;
#endif
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