llvm-6502/lib/Target/Sparc/SparcV8InstrInfo_F3.td

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//===- SparcV8Instrs_F3.td - Format 3 Instructions: SparcV8 Target --------===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by the LLVM research group and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// Format #3 instruction classes in the SparcV8
//
//===----------------------------------------------------------------------===//
class F3 : InstV8 {
bits<5> rd;
bits<6> op3;
bits<5> rs1;
let op{1} = 1; // Op = 2 or 3
let Inst{29-25} = rd;
let Inst{24-19} = op3;
let Inst{18-14} = rs1;
}
// Specific F3 classes: SparcV8 manual, page 44
//
class F3_1<bits<2> opVal, bits<6> op3val, string name> : F3 {
bits<8> asi;
bits<5> rs2;
let op = opVal;
let op3 = op3val;
let Name = name;
let Inst{13} = 0; // i field = 0
let Inst{12-5} = asi; // address space identifier
let Inst{4-0} = rs2;
}
class F3_2<bits<2> opVal, bits<6> op3val, string name> : F3 {
bits<13> simm13;
let op = opVal;
let op3 = op3val;
let Name = name;
let Inst{13} = 1; // i field = 1
let Inst{12-0} = simm13;
}
// floating-point
class F3_3<bits<2> opVal, bits<6> op3val, bits<9> opfval, string name> : F3 {
bits<8> asi;
bits<5> rs2;
let op = opVal;
let op3 = op3val;
let Name = name;
let Inst{13-5} = opfval; // fp opcode
let Inst{4-0} = rs2;
}