-//===- MipsRegisterInfo.td - Mips Register defs -----------*- tablegen -*-===//
+//===-- MipsInstrFormats.td - Mips Instruction Formats -----*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// Describe MIPS instructions format
//
// CPU INSTRUCTION FORMATS
// shamt - only used on shift instructions, contains the shift amount.
// funct - combined with opcode field give us an operation code.
//
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
+
+// Format specifies the encoding used by the instruction. This is part of the
+// ad-hoc solution used to emit machine instruction encodings by our machine
+// code emitter.
+class Format<bits<4> val> {
+ bits<4> Value = val;
+}
+
+def Pseudo : Format<0>;
+def FrmR : Format<1>;
+def FrmI : Format<2>;
+def FrmJ : Format<3>;
+def FrmFR : Format<4>;
+def FrmFI : Format<5>;
+def FrmOther : Format<6>; // Instruction w/ a custom format
// Generic Mips Format
class MipsInst<dag outs, dag ins, string asmstr, list<dag> pattern,
- InstrItinClass itin>: Instruction
+ InstrItinClass itin, Format f>: Instruction
{
field bits<32> Inst;
+ Format Form = f;
let Namespace = "Mips";
- bits<6> opcode;
+ let Size = 4;
- // Top 5 bits are the 'opcode' field
- let Inst{31-26} = opcode;
+ bits<6> Opcode = 0;
- dag OutOperandList = outs;
- dag InOperandList = ins;
+ // Top 6 bits are the 'opcode' field
+ let Inst{31-26} = Opcode;
+
+ let OutOperandList = outs;
+ let InOperandList = ins;
let AsmString = asmstr;
let Pattern = pattern;
let Itinerary = itin;
+
+ //
+ // Attributes specific to Mips instructions...
+ //
+ bits<4> FormBits = Form.Value;
+
+ // TSFlags layout should be kept in sync with MipsInstrInfo.h.
+ let TSFlags{3-0} = FormBits;
+
+ let DecoderNamespace = "Mips";
+
+ field bits<32> SoftFail = 0;
+}
+
+// Mips32/64 Instruction Format
+class InstSE<dag outs, dag ins, string asmstr, list<dag> pattern,
+ InstrItinClass itin, Format f>:
+ MipsInst<outs, ins, asmstr, pattern, itin, f> {
+ let Predicates = [HasStandardEncoding];
}
// Mips Pseudo Instructions Format
class MipsPseudo<dag outs, dag ins, string asmstr, list<dag> pattern>:
- MipsInst<outs, ins, asmstr, pattern, IIPseudo>;
+ MipsInst<outs, ins, asmstr, pattern, IIPseudo, Pseudo> {
+ let isCodeGenOnly = 1;
+ let isPseudo = 1;
+}
-//===---------------------------------------------------------------------===//
+// Mips32/64 Pseudo Instruction Format
+class PseudoSE<dag outs, dag ins, string asmstr, list<dag> pattern>:
+ MipsPseudo<outs, ins, asmstr, pattern> {
+ let Predicates = [HasStandardEncoding];
+}
+
+//===----------------------------------------------------------------------===//
// Format R instruction class in Mips : <|opcode|rs|rt|rd|shamt|funct|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FR<bits<6> op, bits<6> _funct, dag outs, dag ins, string asmstr,
list<dag> pattern, InstrItinClass itin>:
- MipsInst<outs, ins, asmstr, pattern, itin>
+ InstSE<outs, ins, asmstr, pattern, itin, FrmR>
{
bits<5> rd;
bits<5> rs;
bits<5> shamt;
bits<6> funct;
- let opcode = op;
+ let Opcode = op;
let funct = _funct;
let Inst{25-21} = rs;
let Inst{5-0} = funct;
}
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// Format I instruction class in Mips : <|opcode|rs|rt|immediate|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FI<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
- InstrItinClass itin>: MipsInst<outs, ins, asmstr, pattern, itin>
+ InstrItinClass itin>: InstSE<outs, ins, asmstr, pattern, itin, FrmI>
{
bits<5> rt;
bits<5> rs;
bits<16> imm16;
- let opcode = op;
+ let Opcode = op;
let Inst{25-21} = rs;
let Inst{20-16} = rt;
let Inst{15-0} = imm16;
}
-//===---------------------------------------------------------------------===//
+class BranchBase<bits<6> op, dag outs, dag ins, string asmstr,
+ list<dag> pattern, InstrItinClass itin>:
+ InstSE<outs, ins, asmstr, pattern, itin, FrmI>
+{
+ bits<5> rs;
+ bits<5> rt;
+ bits<16> imm16;
+
+ let Opcode = op;
+
+ let Inst{25-21} = rs;
+ let Inst{20-16} = rt;
+ let Inst{15-0} = imm16;
+}
+
+//===----------------------------------------------------------------------===//
// Format J instruction class in Mips : <|opcode|address|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FJ<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern,
- InstrItinClass itin>: MipsInst<outs, ins, asmstr, pattern, itin>
+ InstrItinClass itin>: InstSE<outs, ins, asmstr, pattern, itin, FrmJ>
{
bits<26> addr;
- let opcode = op;
+ let Opcode = op;
let Inst{25-0} = addr;
}
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
//
// FLOATING POINT INSTRUCTION FORMATS
//
// fmt - double or single precision.
// funct - combined with opcode field give us an operation code.
//
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// Format FR instruction class in Mips : <|opcode|fmt|ft|fs|fd|funct|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FFR<bits<6> op, bits<6> _funct, bits<5> _fmt, dag outs, dag ins,
string asmstr, list<dag> pattern> :
- MipsInst<outs, ins, asmstr, pattern, NoItinerary>
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmFR>
{
bits<5> fd;
bits<5> fs;
bits<5> fmt;
bits<6> funct;
- let opcode = op;
+ let Opcode = op;
let funct = _funct;
let fmt = _fmt;
let Inst{5-0} = funct;
}
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// Format FI instruction class in Mips : <|opcode|base|ft|immediate|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FFI<bits<6> op, dag outs, dag ins, string asmstr, list<dag> pattern>:
- MipsInst<outs, ins, asmstr, pattern, NoItinerary>
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmFI>
{
bits<5> ft;
bits<5> base;
bits<16> imm16;
- let opcode = op;
+ let Opcode = op;
let Inst{25-21} = base;
let Inst{20-16} = ft;
let Inst{15-0} = imm16;
}
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
// Compare instruction class in Mips : <|010001|fmt|ft|fs|0000011|condcode|>
-//===---------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
class FCC<bits<5> _fmt, dag outs, dag ins, string asmstr, list<dag> pattern> :
- MipsInst<outs, ins, asmstr, pattern, NoItinerary>
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmOther>
{
bits<5> fs;
bits<5> ft;
bits<4> cc;
bits<5> fmt;
- let opcode = 0x11;
+ let Opcode = 0x11;
let fmt = _fmt;
let Inst{25-21} = fmt;
class FCMOV<bits<1> _tf, dag outs, dag ins, string asmstr,
list<dag> pattern> :
- MipsInst<outs, ins, asmstr, pattern, NoItinerary>
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmOther>
{
bits<5> rd;
bits<5> rs;
- bits<3> N;
+ bits<3> cc;
bits<1> tf;
- let opcode = 0;
+ let Opcode = 0;
let tf = _tf;
let Inst{25-21} = rs;
- let Inst{20-18} = N;
+ let Inst{20-18} = cc;
let Inst{17} = 0;
let Inst{16} = tf;
let Inst{15-11} = rd;
class FFCMOV<bits<5> _fmt, bits<1> _tf, dag outs, dag ins, string asmstr,
list<dag> pattern> :
- MipsInst<outs, ins, asmstr, pattern, NoItinerary>
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmOther>
{
bits<5> fd;
bits<5> fs;
- bits<3> N;
+ bits<3> cc;
bits<5> fmt;
bits<1> tf;
- let opcode = 17;
+ let Opcode = 17;
let fmt = _fmt;
let tf = _tf;
let Inst{25-21} = fmt;
- let Inst{20-18} = N;
+ let Inst{20-18} = cc;
let Inst{17} = 0;
let Inst{16} = tf;
let Inst{15-11} = fs;
let Inst{10-6} = fd;
let Inst{5-0} = 17;
-}
\ No newline at end of file
+}
+
+// FP unary instructions without patterns.
+class FFR1<bits<6> funct, bits<5> fmt, string opstr, string fmtstr,
+ RegisterClass DstRC, RegisterClass SrcRC> :
+ FFR<0x11, funct, fmt, (outs DstRC:$fd), (ins SrcRC:$fs),
+ !strconcat(opstr, ".", fmtstr, "\t$fd, $fs"), []> {
+ let ft = 0;
+}
+
+// FP unary instructions with patterns.
+class FFR1P<bits<6> funct, bits<5> fmt, string opstr, string fmtstr,
+ RegisterClass DstRC, RegisterClass SrcRC, SDNode OpNode> :
+ FFR<0x11, funct, fmt, (outs DstRC:$fd), (ins SrcRC:$fs),
+ !strconcat(opstr, ".", fmtstr, "\t$fd, $fs"),
+ [(set DstRC:$fd, (OpNode SrcRC:$fs))]> {
+ let ft = 0;
+}
+
+class FFR2P<bits<6> funct, bits<5> fmt, string opstr,
+ string fmtstr, RegisterClass RC, SDNode OpNode> :
+ FFR<0x11, funct, fmt, (outs RC:$fd), (ins RC:$fs, RC:$ft),
+ !strconcat(opstr, ".", fmtstr, "\t$fd, $fs, $ft"),
+ [(set RC:$fd, (OpNode RC:$fs, RC:$ft))]>;
+
+// Floating point madd/msub/nmadd/nmsub.
+class FFMADDSUB<bits<3> funct, bits<3> fmt, dag outs, dag ins, string asmstr,
+ list<dag> pattern>
+ : InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmOther> {
+ bits<5> fd;
+ bits<5> fr;
+ bits<5> fs;
+ bits<5> ft;
+
+ let Opcode = 0x13;
+ let Inst{25-21} = fr;
+ let Inst{20-16} = ft;
+ let Inst{15-11} = fs;
+ let Inst{10-6} = fd;
+ let Inst{5-3} = funct;
+ let Inst{2-0} = fmt;
+}
+
+// FP indexed load/store instructions.
+class FFMemIdx<bits<6> funct, dag outs, dag ins, string asmstr,
+ list<dag> pattern> :
+ InstSE<outs, ins, asmstr, pattern, NoItinerary, FrmOther>
+{
+ bits<5> base;
+ bits<5> index;
+ bits<5> fs;
+ bits<5> fd;
+
+ let Opcode = 0x13;
+
+ let Inst{25-21} = base;
+ let Inst{20-16} = index;
+ let Inst{15-11} = fs;
+ let Inst{10-6} = fd;
+ let Inst{5-0} = funct;
+}
projects / oota-llvm.git / blobdiff