1 //===- Mips64InstrInfo.td - Mips64 Instruction Information -*- tablegen -*-===//
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 describes Mips64 instructions.
12 //===----------------------------------------------------------------------===//
14 //===----------------------------------------------------------------------===//
15 // Mips64 Instruction Predicate Definitions.
16 //===----------------------------------------------------------------------===//
17 def HasMips64 : Predicate<"Subtarget.hasMips64()">;
18 def HasMips64r2 : Predicate<"Subtarget.hasMips64r2()">;
20 //===----------------------------------------------------------------------===//
21 // Mips Operand, Complex Patterns and Transformations Definitions.
22 //===----------------------------------------------------------------------===//
24 // Instruction operand types
25 def simm16_64 : Operand<i64>;
26 def shamt_64 : Operand<i64>;
29 def uimm16_64 : Operand<i64> {
30 let PrintMethod = "printUnsignedImm";
33 // Transformation Function - get Imm - 32.
34 def Subtract32 : SDNodeXForm<imm, [{
35 return getI32Imm((unsigned)N->getZExtValue() - 32);
38 // imm32_63 predicate - True if imm is in range [32, 63].
39 def imm32_63 : ImmLeaf<i64,
40 [{return (int32_t)Imm >= 32 && (int32_t)Imm < 64;}],
43 //===----------------------------------------------------------------------===//
44 // Instructions specific format
45 //===----------------------------------------------------------------------===//
47 // Arithmetic 3 register operands
48 class ArithR64<bits<6> op, bits<6> func, string instr_asm, SDNode OpNode,
49 InstrItinClass itin, bit isComm = 0>:
50 FR<op, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, CPU64Regs:$c),
51 !strconcat(instr_asm, "\t$dst, $b, $c"),
52 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, CPU64Regs:$c))], itin> {
53 let isCommutable = isComm;
56 // Arithmetic 2 register operands
57 class ArithI64<bits<6> op, string instr_asm, SDNode OpNode,
58 Operand Od, PatLeaf imm_type> :
59 FI<op, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, Od:$c),
60 !strconcat(instr_asm, "\t$dst, $b, $c"),
61 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, imm_type:$c))], IIAlu>;
64 let isCommutable = 1 in
65 class LogicR64<bits<6> func, string instr_asm, SDNode OpNode>:
66 FR<0x00, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, CPU64Regs:$c),
67 !strconcat(instr_asm, "\t$dst, $b, $c"),
68 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, CPU64Regs:$c))], IIAlu>;
70 class LogicI64<bits<6> op, string instr_asm, SDNode OpNode>:
71 FI<op, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, uimm16_64:$c),
72 !strconcat(instr_asm, "\t$dst, $b, $c"),
73 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, immZExt16:$c))], IIAlu>;
75 let isCommutable = 1 in
76 class LogicNOR64<bits<6> op, bits<6> func, string instr_asm>:
77 FR<op, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, CPU64Regs:$c),
78 !strconcat(instr_asm, "\t$dst, $b, $c"),
79 [(set CPU64Regs:$dst, (not (or CPU64Regs:$b, CPU64Regs:$c)))], IIAlu>;
82 class LogicR_shift_rotate_imm64<bits<6> func, bits<5> _rs, string instr_asm,
83 SDNode OpNode, PatFrag PF>:
84 FR<0x00, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$b, shamt_64:$c),
85 !strconcat(instr_asm, "\t$dst, $b, $c"),
86 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, (i64 PF:$c)))],
91 class LogicR_shift_rotate_reg64<bits<6> func, bits<5> _shamt, string instr_asm,
93 FR<0x00, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$c, CPU64Regs:$b),
94 !strconcat(instr_asm, "\t$dst, $b, $c"),
95 [(set CPU64Regs:$dst, (OpNode CPU64Regs:$b, CPU64Regs:$c))], IIAlu> {
100 let Defs = [HI64, LO64] in {
101 let isCommutable = 1 in
102 class Mul64<bits<6> func, string instr_asm, InstrItinClass itin>:
103 FR<0x00, func, (outs), (ins CPU64Regs:$a, CPU64Regs:$b),
104 !strconcat(instr_asm, "\t$a, $b"), [], itin>;
106 class Div64<SDNode op, bits<6> func, string instr_asm, InstrItinClass itin>:
107 FR<0x00, func, (outs), (ins CPU64Regs:$a, CPU64Regs:$b),
108 !strconcat(instr_asm, "\t$$zero, $a, $b"),
109 [(op CPU64Regs:$a, CPU64Regs:$b)], itin>;
114 let rs = 0, rt = 0 in
115 class MoveFromLOHI64<bits<6> func, string instr_asm>:
116 FR<0x00, func, (outs CPU64Regs:$dst), (ins),
117 !strconcat(instr_asm, "\t$dst"), [], IIHiLo>;
119 let rt = 0, rd = 0 in
120 class MoveToLOHI64<bits<6> func, string instr_asm>:
121 FR<0x00, func, (outs), (ins CPU64Regs:$src),
122 !strconcat(instr_asm, "\t$src"), [], IIHiLo>;
125 // Count Leading Ones/Zeros in Word
126 class CountLeading64<bits<6> func, string instr_asm, list<dag> pattern>:
127 FR<0x1c, func, (outs CPU64Regs:$dst), (ins CPU64Regs:$src),
128 !strconcat(instr_asm, "\t$dst, $src"), pattern, IIAlu>,
129 Requires<[HasBitCount]> {
134 //===----------------------------------------------------------------------===//
135 // Instruction definition
136 //===----------------------------------------------------------------------===//
138 /// Arithmetic Instructions (ALU Immediate)
139 def DADDiu : ArithI64<0x19, "daddiu", add, simm16_64, immSExt16>;
140 def DANDi : LogicI64<0x0c, "andi", and>;
141 def DORi : LogicI64<0x0d, "ori", or>;
142 def DXORi : LogicI64<0x0e, "xori", xor>;
144 /// Arithmetic Instructions (3-Operand, R-Type)
145 def DADDu : ArithR64<0x00, 0x2d, "daddu", add, IIAlu, 1>;
146 def DSUBu : ArithR64<0x00, 0x2f, "dsubu", sub, IIAlu>;
147 def DAND : LogicR64<0x24, "and", and>;
148 def DOR : LogicR64<0x25, "or", or>;
149 def DXOR : LogicR64<0x26, "xor", xor>;
150 def DNOR : LogicNOR64<0x00, 0x27, "nor">;
152 /// Shift Instructions
153 def DSLL : LogicR_shift_rotate_imm64<0x38, 0x00, "dsll", shl, immZExt5>;
154 def DSRL : LogicR_shift_rotate_imm64<0x3a, 0x00, "dsrl", srl, immZExt5>;
155 def DSRA : LogicR_shift_rotate_imm64<0x3b, 0x00, "dsra", sra, immZExt5>;
156 def DSLL32 : LogicR_shift_rotate_imm64<0x3c, 0x00, "dsll32", shl, imm32_63>;
157 def DSRL32 : LogicR_shift_rotate_imm64<0x3e, 0x00, "dsrl32", srl, imm32_63>;
158 def DSRA32 : LogicR_shift_rotate_imm64<0x3f, 0x00, "dsra32", sra, imm32_63>;
159 def DSLLV : LogicR_shift_rotate_reg64<0x24, 0x00, "dsllv", shl>;
160 def DSRLV : LogicR_shift_rotate_reg64<0x26, 0x00, "dsrlv", srl>;
161 def DSRAV : LogicR_shift_rotate_reg64<0x27, 0x00, "dsrav", sra>;
163 // Rotate Instructions
164 let Predicates = [HasMips64r2] in {
165 def DROTR : LogicR_shift_rotate_imm64<0x3a, 0x01, "drotr", rotr, immZExt5>;
166 def DROTR32 : LogicR_shift_rotate_imm64<0x3e, 0x01, "drotr32", rotr,
168 def DROTRV : LogicR_shift_rotate_reg64<0x16, 0x01, "drotrv", rotr>;
171 /// Multiply and Divide Instructions.
172 def DMULT : Mul64<0x1c, "dmult", IIImul>;
173 def DMULTu : Mul64<0x1d, "dmultu", IIImul>;
174 def DSDIV : Div64<MipsDivRem, 0x1e, "ddiv", IIIdiv>;
175 def DUDIV : Div64<MipsDivRemU, 0x1f, "ddivu", IIIdiv>;
178 def MTHI64 : MoveToLOHI64<0x11, "mthi">;
180 def MTLO64 : MoveToLOHI64<0x13, "mtlo">;
183 def MFHI64 : MoveFromLOHI64<0x10, "mfhi">;
185 def MFLO64 : MoveFromLOHI64<0x12, "mflo">;
188 def DCLZ : CountLeading64<0x24, "dclz",
189 [(set CPU64Regs:$dst, (ctlz CPU64Regs:$src))]>;
190 def DCLO : CountLeading64<0x25, "dclo",
191 [(set CPU64Regs:$dst, (ctlz (not CPU64Regs:$src)))]>;
193 //===----------------------------------------------------------------------===//
194 // Arbitrary patterns that map to one or more instructions
195 //===----------------------------------------------------------------------===//
198 def : Pat<(i64 immSExt16:$in),
199 (DADDiu ZERO_64, imm:$in)>;
200 def : Pat<(i64 immZExt16:$in),
201 (DORi ZERO_64, imm:$in)>;