-//===- Sparc.td - Target Description for Sparc V9 Target --------*- C++ -*-===//
-// vim:ft=cpp
+//===- Target.td - Target Independent TableGen interface ---*- tablegen -*-===//
+//
+// 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.
+//
//===----------------------------------------------------------------------===//
-
-//===----------------------------------------------------------------------===//
-// Target-Independent interface
+//
+// This file defines the target-independent interfaces which should be
+// implemented by each target which is using a TableGen based code generator.
+//
//===----------------------------------------------------------------------===//
+//===----------------------------------------------------------------------===//
+//
// Value types - These values correspond to the register types defined in the
-// ValueTypes.h file.
-class ValueType { string Namespace = "MVT"; }
-def i1 : ValueType; // One bit boolean value
-def i8 : ValueType; // 8-bit integer value
-def i16 : ValueType; // 16-bit integer value
-def i32 : ValueType; // 32-bit integer value
-def i64 : ValueType; // 64-bit integer value
-def i128 : ValueType; // 128-bit integer value
-def f32 : ValueType; // 32-bit floating point value
-def f64 : ValueType; // 64-bit floating point value
-def f80 : ValueType; // 80-bit floating point value
-def f128 : ValueType; // 128-bit floating point value
+// ValueTypes.h file. If you update anything here, you must update it there as
+// well!
+//
+class ValueType<int size, int value> {
+ string Namespace = "MVT";
+ int Size = size;
+ int Value = value;
+}
+
+def OtherVT: ValueType<0 , 0>; // "Other" value
+def i1 : ValueType<1 , 1>; // One bit boolean value
+def i8 : ValueType<8 , 2>; // 8-bit integer value
+def i16 : ValueType<16 , 3>; // 16-bit integer value
+def i32 : ValueType<32 , 4>; // 32-bit integer value
+def i64 : ValueType<64 , 5>; // 64-bit integer value
+def i128 : ValueType<128, 5>; // 128-bit integer value
+def f32 : ValueType<32 , 7>; // 32-bit floating point value
+def f64 : ValueType<64 , 8>; // 64-bit floating point value
+def f80 : ValueType<80 , 9>; // 80-bit floating point value
+def f128 : ValueType<128, 9>; // 128-bit floating point value
+def isVoid : ValueType<0 , 11>; // Produces no value
+
+//===----------------------------------------------------------------------===//
+// Register file description - These classes are used to fill in the target
+// description classes in llvm/Target/MRegisterInfo.h
+
+// Register - You should define one instance of this class for each register in
+// the target machine.
+//
class Register {
string Namespace = "";
- ValueType RegType;
+ string Name = "";
+
+ // SpillSize - If this value is set to a non-zero value, it is the size in
+ // bits of the spill slot required to hold this register. If this value is
+ // set to zero, the information is inferred from any register classes the
+ // register belongs to.
+ int SpillSize = 0;
+
+ // SpillAlignment - This value is used to specify the alignment required for
+ // spilling the register. Like SpillSize, this should only be explicitly
+ // specified if the register is not in a register class.
+ int SpillAlignment = 0;
+}
+
+// NamedReg - If the name for the 'def' of the register should not become the
+// "name" of the register, you can use this to specify a custom name instead.
+//
+class NamedReg<string n> : Register {
+ let Name = n;
+}
+
+// RegisterAliases - You should define instances of this class to indicate which
+// registers in the register file are aliased together. This allows the code
+// generator to be careful not to put two values with overlapping live ranges
+// into registers which alias.
+//
+class RegisterAliases<Register reg, list<Register> aliases> {
+ Register Reg = reg;
+ list<Register> Aliases = aliases;
+}
+
+// RegisterClass - Now that all of the registers are defined, and aliases
+// between registers are defined, specify which registers belong to which
+// register classes. This also defines the default allocation order of
+// registers by register allocators.
+//
+class RegisterClass<ValueType regType, int alignment, list<Register> regList> {
+ // RegType - Specify the ValueType of the registers in this register class.
+ // Note that all registers in a register class must have the same ValueType.
+ //
+ ValueType RegType = regType;
+
+ // Alignment - Specify the alignment required of the registers when they are
+ // stored or loaded to memory.
+ //
+ int Size = RegType.Size;
+ int Alignment = alignment;
+
+ // MemberList - Specify which registers are in this class. If the
+ // allocation_order_* method are not specified, this also defines the order of
+ // allocation used by the register allocator.
+ //
+ list<Register> MemberList = regList;
+
+ // Methods - This member can be used to insert arbitrary code into a generated
+ // register class. The normal usage of this is to overload virtual methods.
+ code Methods = [{}];
}
+
+//===----------------------------------------------------------------------===//
+// Instruction set description - These classes correspond to the C++ classes in
+// the Target/TargetInstrInfo.h file.
+//
class Instruction {
- string Name; // The opcode string for this instruction
+ string Name = ""; // The opcode string for this instruction
string Namespace = "";
- list<Register> Uses = []; // Default to using no non-operand registers
- list<Register> Defs = []; // Default to modifying no non-operand registers
+ dag OperandList; // An dag containing the MI operand list.
+ string AsmString = ""; // The .s format to print the instruction with.
+
+ // Pattern - Set to the DAG pattern for this instruction, if we know of one,
+ // otherwise, uninitialized.
+ list<dag> Pattern;
+
+ // The follow state will eventually be inferred automatically from the
+ // instruction pattern.
+
+ list<Register> Uses = []; // Default to using no non-operand registers
+ list<Register> Defs = []; // Default to modifying no non-operand registers
// These bits capture information about the high-level semantics of the
// instruction.
bit isReturn = 0; // Is this instruction a return instruction?
bit isBranch = 0; // Is this instruction a branch instruction?
+ bit isBarrier = 0; // Can control flow fall through this instruction?
bit isCall = 0; // Is this instruction a call instruction?
bit isTwoAddress = 0; // Is this a two address instruction?
bit isTerminator = 0; // Is this part of the terminator for a basic block?
}
+
+
+/// ops definition - This is just a simple marker used to identify the operands
+/// list for an instruction. This should be used like this:
+/// (ops R32:$dst, R32:$src) or something similar.
+def ops;
+
+/// Operand Types - These provide the built-in operand types that may be used
+/// by a target. Targets can optionally provide their own operand types as
+/// needed, though this should not be needed for RISC targets.
+class Operand<ValueType ty> {
+ int NumMIOperands = 1;
+ ValueType Type = ty;
+ string PrintMethod = "printOperand";
+}
+
+def i1imm : Operand<i1>;
+def i8imm : Operand<i8>;
+def i16imm : Operand<i16>;
+def i32imm : Operand<i32>;
+def i64imm : Operand<i64>;
+
+// InstrInfo - This class should only be instantiated once to provide parameters
+// which are global to the the target machine.
+//
+class InstrInfo {
+ Instruction PHIInst;
+
+ // If the target wants to associate some target-specific information with each
+ // instruction, it should provide these two lists to indicate how to assemble
+ // the target specific information into the 32 bits available.
+ //
+ list<string> TSFlagsFields = [];
+ list<int> TSFlagsShifts = [];
+}
+
+//===----------------------------------------------------------------------===//
+// AsmWriter - This class can be implemented by targets that need to customize
+// the format of the .s file writer.
+//
+// Subtargets can have multiple different asmwriters (e.g. AT&T vs Intel syntax
+// on X86 for example).
+//
+class AsmWriter {
+ // AsmWriterClassName - This specifies the suffix to use for the asmwriter
+ // class. Generated AsmWriter classes are always prefixed with the target
+ // name.
+ string AsmWriterClassName = "AsmPrinter";
+
+ // InstFormatName - AsmWriters can specify the name of the format string to
+ // print instructions with.
+ string InstFormatName = "AsmString";
+}
+def DefaultAsmWriter : AsmWriter;
+
+
+//===----------------------------------------------------------------------===//
+// Target - This class contains the "global" target information
+//
+class Target {
+ // CalleeSavedRegisters - As you might guess, this is a list of the callee
+ // saved registers for a target.
+ list<Register> CalleeSavedRegisters = [];
+
+ // PointerType - Specify the value type to be used to represent pointers in
+ // this target. Typically this is an i32 or i64 type.
+ ValueType PointerType;
+
+ // InstructionSet - Instruction set description for this target.
+ InstrInfo InstructionSet;
+
+ // AssemblyWriter - The AsmWriter instance to use for this target.
+ AsmWriter AssemblyWriter = DefaultAsmWriter;
+}
+
+
+//===----------------------------------------------------------------------===//
+// DAG node definitions used by the instruction selector.
+//
+// NOTE: all of this is a work-in-progress and should be ignored for now.
+//
+/*
+class Expander<dag pattern, list<dag> result> {
+ dag Pattern = pattern;
+ list<dag> Result = result;
+}
+
+class DagNodeValType;
+def DNVT_any : DagNodeValType; // No constraint on tree node
+def DNVT_void : DagNodeValType; // Tree node always returns void
+def DNVT_val : DagNodeValType; // A non-void type
+def DNVT_arg0 : DagNodeValType; // Tree node returns same type as Arg0
+def DNVT_arg1 : DagNodeValType; // Tree node returns same type as Arg1
+def DNVT_ptr : DagNodeValType; // The target pointer type
+def DNVT_i8 : DagNodeValType; // Always have an i8 value
+
+class DagNode<DagNodeValType ret, list<DagNodeValType> args> {
+ DagNodeValType RetType = ret;
+ list<DagNodeValType> ArgTypes = args;
+ string EnumName = ?;
+}
+
+// BuiltinDagNodes are built into the instruction selector and correspond to
+// enum values.
+class BuiltinDagNode<DagNodeValType Ret, list<DagNodeValType> Args,
+ string Ename> : DagNode<Ret, Args> {
+ let EnumName = Ename;
+}
+
+// Magic nodes...
+def Void : RegisterClass<isVoid,0,[]> { let isDummyClass = 1; }
+def set : DagNode<DNVT_void, [DNVT_val, DNVT_arg0]>;
+def chain : BuiltinDagNode<DNVT_void, [DNVT_void, DNVT_void], "ChainNode">;
+def blockchain : BuiltinDagNode<DNVT_void, [DNVT_void, DNVT_void],
+ "BlockChainNode">;
+def ChainExpander : Expander<(chain Void, Void), []>;
+def BlockChainExpander : Expander<(blockchain Void, Void), []>;
+
+
+// Terminals...
+def imm : BuiltinDagNode<DNVT_val, [], "Constant">;
+def frameidx : BuiltinDagNode<DNVT_ptr, [], "FrameIndex">;
+def basicblock : BuiltinDagNode<DNVT_ptr, [], "BasicBlock">;
+
+// Arithmetic...
+def plus : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "Plus">;
+def minus : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "Minus">;
+def times : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "Times">;
+def sdiv : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "SDiv">;
+def udiv : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "UDiv">;
+def srem : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "SRem">;
+def urem : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "URem">;
+def and : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "And">;
+def or : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "Or">;
+def xor : BuiltinDagNode<DNVT_arg0, [DNVT_arg1, DNVT_arg0], "Xor">;
+
+// Comparisons...
+def seteq : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetEQ">;
+def setne : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetNE">;
+def setlt : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetLT">;
+def setle : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetLE">;
+def setgt : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetGT">;
+def setge : BuiltinDagNode<DNVT_i8 , [DNVT_arg1, DNVT_arg0], "SetGE">;
+
+def load : BuiltinDagNode<DNVT_val, [DNVT_ptr], "Load">;
+//def store : BuiltinDagNode<DNVT_Void, [DNVT_ptr, DNVT_val]>;
+
+// Other...
+def ret : BuiltinDagNode<DNVT_void, [DNVT_val], "Ret">;
+def retvoid : BuiltinDagNode<DNVT_void, [], "RetVoid">;
+def br : BuiltinDagNode<DNVT_void, [DNVT_ptr], "Br">;
+def brcond : BuiltinDagNode<DNVT_void, [DNVT_i8, DNVT_ptr, DNVT_ptr],
+ "BrCond">;
+
+def unspec1 : BuiltinDagNode<DNVT_any , [DNVT_val], "Unspec1">;
+def unspec2 : BuiltinDagNode<DNVT_any , [DNVT_val, DNVT_val], "Unspec2">;
+
+//===----------------------------------------------------------------------===//
+// DAG nonterminals definitions used by the instruction selector...
+//
+class Nonterminal<dag pattern> {
+ dag Pattern = pattern;
+ bit BuiltIn = 0;
+}
+
+*/