1 //===- HexagonBaseInfo.h - Top level definitions for Hexagon ----*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file contains small standalone helper functions and enum definitions for
11 // the Hexagon target useful for the compiler back-end and the MC libraries.
12 // As such, it deliberately does not include references to LLVM core
13 // code gen types, passes, etc..
15 //===----------------------------------------------------------------------===//
17 #ifndef LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H
18 #define LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H
20 #include "HexagonDepITypes.h"
21 #include "MCTargetDesc/HexagonMCTargetDesc.h"
25 /// HexagonII - This namespace holds all of the target specific flags that
26 /// instruction info tracks.
28 unsigned const TypeCVI_FIRST = TypeCVI_4SLOT_MPY;
29 unsigned const TypeCVI_LAST = TypeCVI_VX_LATE;
39 NoAddrMode = 0, // No addressing mode
40 Absolute = 1, // Absolute addressing mode
41 AbsoluteSet = 2, // Absolute set addressing mode
42 BaseImmOffset = 3, // Indirect with offset
43 BaseLongOffset = 4, // Indirect with long offset
44 BaseRegOffset = 5, // Indirect with register offset
45 PostInc = 6 // Post increment addressing mode
57 // MCInstrDesc TSFlags
58 // *** Must match HexagonInstrFormat*.td ***
60 // This 5-bit field describes the insn type.
67 // Packed only with A or X-type instructions.
70 // Only A-type instruction in first slot or nothing.
71 RestrictSlot1AOKPos = 8,
72 RestrictSlot1AOKMask = 0x1,
74 // Predicated instructions.
77 PredicatedFalsePos = 10,
78 PredicatedFalseMask = 0x1,
79 PredicatedNewPos = 11,
80 PredicatedNewMask = 0x1,
81 PredicateLatePos = 12,
82 PredicateLateMask = 0x1,
84 // New-Value consumer instructions.
87 // New-Value producer instructions.
89 hasNewValueMask = 0x1,
90 // Which operand consumes or produces a new value.
93 // Stores that can become new-value stores.
96 // New-value store instructions.
99 // Loads that can become current-value loads.
102 // Current-value load instructions.
108 ExtendableMask = 0x1,
109 // Insns must be extended.
112 // Which operand may be extended.
113 ExtendableOpPos = 24,
114 ExtendableOpMask = 0x7,
115 // Signed or unsigned range.
116 ExtentSignedPos = 27,
117 ExtentSignedMask = 0x1,
118 // Number of bits of range before extending operand.
120 ExtentBitsMask = 0x1f,
121 // Alignment power-of-two before extending operand.
123 ExtentAlignMask = 0x3,
132 RestrictNoSlot1StorePos = 38,
133 RestrictNoSlot1StoreMask = 0x1,
135 // Addressing mode for load/store instructions.
138 // Access size for load/store instructions.
139 MemAccessSizePos = 44,
140 MemAccesSizeMask = 0xf,
142 // Branch predicted taken.
146 // Floating-point instructions.
150 // New-Value producer-2 instructions.
151 hasNewValuePos2 = 51,
152 hasNewValueMask2 = 0x1,
153 // Which operand consumes or produces a new value.
155 NewValueOpMask2 = 0x7,
157 // Accumulator instructions.
159 AccumulatorMask = 0x1,
161 // Complex XU, prevent xu competition by preferring slot3
162 PrefersSlot3Pos = 56,
163 PrefersSlot3Mask = 0x1,
173 // *** The code above must match HexagonInstrFormat*.td *** //
175 // Hexagon specific MO operand flag mask.
176 enum HexagonMOTargetFlagVal {
177 // Hexagon-specific MachineOperand target flags.
179 // When chaning these, make sure to update
180 // getSerializableDirectMachineOperandTargetFlags and
181 // getSerializableBitmaskMachineOperandTargetFlags if needed.
184 /// MO_PCREL - On a symbol operand, indicates a PC-relative relocation
185 /// Used for computing a global address for PIC compilations
188 /// MO_GOT - Indicates a GOT-relative relocation
191 // Low or high part of a symbol.
194 // Offset from the base of the SDA.
197 // MO_GDGOT - indicates GOT relative relocation for TLS
198 // GeneralDynamic method
201 // MO_GDPLT - indicates PLT relative relocation for TLS
202 // GeneralDynamic method
205 // MO_IE - indicates non PIC relocation for TLS
206 // Initial Executable method
209 // MO_IEGOT - indicates PIC relocation for TLS
210 // Initial Executable method
213 // MO_TPREL - indicates relocation for TLS
214 // local Executable method
217 // HMOTF_ConstExtended
218 // Addendum to above, indicates a const extended op
219 // Can be used as a mask.
220 HMOTF_ConstExtended = 0x80,
222 // Union of all bitmasks (currently only HMOTF_ConstExtended).
223 MO_Bitmasks = HMOTF_ConstExtended
226 // Hexagon Sub-instruction classes.
227 enum SubInstructionGroup {
237 // Hexagon Compound classes.
246 INST_PARSE_MASK = 0x0000c000,
247 INST_PARSE_PACKET_END = 0x0000c000,
248 INST_PARSE_LOOP_END = 0x00008000,
249 INST_PARSE_NOT_END = 0x00004000,
250 INST_PARSE_DUPLEX = 0x00000000,
251 INST_PARSE_EXTENDER = 0x00000000
254 enum InstIClassBits : unsigned {
255 INST_ICLASS_MASK = 0xf0000000,
256 INST_ICLASS_EXTENDER = 0x00000000,
257 INST_ICLASS_J_1 = 0x10000000,
258 INST_ICLASS_J_2 = 0x20000000,
259 INST_ICLASS_LD_ST_1 = 0x30000000,
260 INST_ICLASS_LD_ST_2 = 0x40000000,
261 INST_ICLASS_J_3 = 0x50000000,
262 INST_ICLASS_CR = 0x60000000,
263 INST_ICLASS_ALU32_1 = 0x70000000,
264 INST_ICLASS_XTYPE_1 = 0x80000000,
265 INST_ICLASS_LD = 0x90000000,
266 INST_ICLASS_ST = 0xa0000000,
267 INST_ICLASS_ALU32_2 = 0xb0000000,
268 INST_ICLASS_XTYPE_2 = 0xc0000000,
269 INST_ICLASS_XTYPE_3 = 0xd0000000,
270 INST_ICLASS_XTYPE_4 = 0xe0000000,
271 INST_ICLASS_ALU32_3 = 0xf0000000
274 LLVM_ATTRIBUTE_UNUSED
275 static unsigned getMemAccessSizeInBytes(MemAccessSize S) {
277 case ByteAccess: return 1;
278 case HalfWordAccess: return 2;
279 case WordAccess: return 4;
280 case DoubleWordAccess: return 8;
284 } // end namespace HexagonII
286 } // end namespace llvm
288 #endif // LLVM_LIB_TARGET_HEXAGON_MCTARGETDESC_HEXAGONBASEINFO_H