1 //===-- SparcInstrFormats.td - Sparc Instruction Formats ---*- 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 class InstSP<dag outs, dag ins, string asmstr, list<dag> pattern>
18 let Inst{31-30} = op; // Top two bits are the 'op' field
20 dag OutOperandList = outs;
21 dag InOperandList = ins;
22 let AsmString = asmstr;
23 let Pattern = pattern;
25 let DecoderNamespace = "Sparc";
26 field bits<32> SoftFail = 0;
29 //===----------------------------------------------------------------------===//
30 // Format #2 instruction classes in the Sparc
31 //===----------------------------------------------------------------------===//
33 // Format 2 instructions
34 class F2<dag outs, dag ins, string asmstr, list<dag> pattern>
35 : InstSP<outs, ins, asmstr, pattern> {
39 let Inst{24-22} = op2;
40 let Inst{21-0} = imm22;
43 // Specific F2 classes: SparcV8 manual, page 44
45 class F2_1<bits<3> op2Val, dag outs, dag ins, string asmstr, list<dag> pattern>
46 : F2<outs, ins, asmstr, pattern> {
54 class F2_2<bits<3> op2Val, bit annul, dag outs, dag ins, string asmstr,
55 list<dag> pattern> : F2<outs, ins, asmstr, pattern> {
60 let Inst{28-25} = cond;
63 class F2_3<bits<3> op2Val, bits<2> ccVal, dag outs, dag ins, string asmstr,
65 : InstSP<outs, ins, asmstr, pattern> {
73 bit annul = 0; // currently unused
74 let pred = 1; // default is predict taken
77 let Inst{28-25} = cond;
78 let Inst{24-22} = op2Val;
79 let Inst{21-20} = ccVal;
81 let Inst{18-0} = imm19;
84 //===----------------------------------------------------------------------===//
85 // Format #3 instruction classes in the Sparc
86 //===----------------------------------------------------------------------===//
88 class F3<dag outs, dag ins, string asmstr, list<dag> pattern>
89 : InstSP<outs, ins, asmstr, pattern> {
93 let op{1} = 1; // Op = 2 or 3
95 let Inst{24-19} = op3;
96 let Inst{18-14} = rs1;
99 // Specific F3 classes: SparcV8 manual, page 44
101 class F3_1_asi<bits<2> opVal, bits<6> op3val, bits<8> asi, dag outs, dag ins,
102 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
108 let Inst{13} = 0; // i field = 0
109 let Inst{12-5} = asi; // address space identifier
113 class F3_1<bits<2> opVal, bits<6> op3val, dag outs, dag ins, string asmstr,
114 list<dag> pattern> : F3_1_asi<opVal, op3val, 0, outs, ins,
117 class F3_2<bits<2> opVal, bits<6> op3val, dag outs, dag ins,
118 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
124 let Inst{13} = 1; // i field = 1
125 let Inst{12-0} = simm13;
129 class F3_3<bits<2> opVal, bits<6> op3val, bits<9> opfval, dag outs, dag ins,
130 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
136 let Inst{13-5} = opfval; // fp opcode
140 // floating-point unary operations.
141 class F3_3u<bits<2> opVal, bits<6> op3val, bits<9> opfval, dag outs, dag ins,
142 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
149 let Inst{13-5} = opfval; // fp opcode
153 // floating-point compares.
154 class F3_3c<bits<2> opVal, bits<6> op3val, bits<9> opfval, dag outs, dag ins,
155 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
162 let Inst{13-5} = opfval; // fp opcode
166 // Shift by register rs2.
167 class F3_Sr<bits<2> opVal, bits<6> op3val, bit xVal, dag outs, dag ins,
168 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
169 bit x = xVal; // 1 for 64-bit shifts.
175 let Inst{13} = 0; // i field = 0
176 let Inst{12} = x; // extended registers.
180 // Shift by immediate.
181 class F3_Si<bits<2> opVal, bits<6> op3val, bit xVal, dag outs, dag ins,
182 string asmstr, list<dag> pattern> : F3<outs, ins, asmstr, pattern> {
183 bit x = xVal; // 1 for 64-bit shifts.
184 bits<6> shcnt; // shcnt32 / shcnt64.
189 let Inst{13} = 1; // i field = 1
190 let Inst{12} = x; // extended registers.
191 let Inst{5-0} = shcnt;
194 // Define rr and ri shift instructions with patterns.
195 multiclass F3_S<string OpcStr, bits<6> Op3Val, bit XVal, SDNode OpNode,
196 ValueType VT, RegisterClass RC> {
197 def rr : F3_Sr<2, Op3Val, XVal, (outs RC:$rd), (ins RC:$rs1, IntRegs:$rs2),
198 !strconcat(OpcStr, " $rs1, $rs2, $rd"),
199 [(set VT:$rd, (OpNode VT:$rs1, i32:$rs2))]>;
200 def ri : F3_Si<2, Op3Val, XVal, (outs RC:$rd), (ins RC:$rs1, i32imm:$shcnt),
201 !strconcat(OpcStr, " $rs1, $shcnt, $rd"),
202 [(set VT:$rd, (OpNode VT:$rs1, (i32 imm:$shcnt)))]>;
205 class F4<bits<6> op3, dag outs, dag ins, string asmstr, list<dag> pattern>
206 : InstSP<outs, ins, asmstr, pattern> {
210 let Inst{29-25} = rd;
211 let Inst{24-19} = op3;
215 class F4_1<bits<6> op3, dag outs, dag ins,
216 string asmstr, list<dag> pattern>
217 : F4<op3, outs, ins, asmstr, pattern> {
224 let Inst{11} = cc{0};
225 let Inst{12} = cc{1};
227 let Inst{17-14} = cond;
228 let Inst{18} = cc{2};
232 class F4_2<bits<6> op3, dag outs, dag ins,
233 string asmstr, list<dag> pattern>
234 : F4<op3, outs, ins, asmstr, pattern> {
239 let Inst{10-0} = simm11;
240 let Inst{11} = cc{0};
241 let Inst{12} = cc{1};
243 let Inst{17-14} = cond;
244 let Inst{18} = cc{2};
247 class F4_3<bits<6> op3, bits<6> opf_low, dag outs, dag ins,
248 string asmstr, list<dag> pattern>
249 : F4<op3, outs, ins, asmstr, pattern> {
255 let Inst{17-14} = cond;
256 let Inst{13-11} = opf_cc;
257 let Inst{10-5} = opf_low;