int SpillAlignment = 0;
// Aliases - A list of registers that this register overlaps with. A read or
- // modification of this register can potentially read or modifie the aliased
+ // modification of this register can potentially read or modify the aliased
// registers.
//
list<Register> Aliases = [];
//===----------------------------------------------------------------------===//
// Pull in the common support for scheduling
//
-include "../TargetSchedule.td"
+include "TargetSchedule.td"
class Predicate; // Forward def
// code.
list<Predicate> Predicates = [];
+ // Code size.
+ int CodeSize = 0;
+
// Added complexity passed onto matching pattern.
int AddedComplexity = 0;
bit isConvertibleToThreeAddress = 0; // Can this 2-addr instruction promote?
bit isCommutable = 0; // Is this 3 operand instruction commutable?
bit isTerminator = 0; // Is this part of the terminator for a basic block?
+ bit isReMaterializable = 0; // Is this instruction re-materializable?
bit hasDelaySlot = 0; // Does this instruction have an delay slot?
bit usesCustomDAGSchedInserter = 0; // Pseudo instr needing special help.
bit hasCtrlDep = 0; // Does this instruction r/w ctrl-flow chains?
bit noResults = 0; // Does this instruction produce no results?
InstrItinClass Itinerary = NoItinerary;// Execution steps used for scheduling.
+
+ string Constraints = ""; // OperandConstraint, e.g. $src = $dst.
+
+ /// DisableEncoding - List of operand names (e.g. "$op1,$op2") that should not
+ /// be encoded into the output machineinstr.
+ string DisableEncoding = "";
+}
+
+/// Imp - Helper class for specifying the implicit uses/defs set for an
+/// instruction.
+class Imp<list<Register> uses, list<Register> defs> {
+ list<Register> Uses = uses;
+ list<Register> Defs = defs;
}
/// Predicates - These are extra conditionals which are turned into instruction
/// of operands.
def variable_ops;
+/// ptr_rc definition - Mark this operand as being a pointer value whose
+/// register class is resolved dynamically via a callback to TargetInstrInfo.
+/// FIXME: We should probably change this to a class which contain a list of
+/// flags. But currently we have but one flag.
+def ptr_rc;
+
/// Operand Types - These provide the built-in operand types that may be used
/// by a target. Targets can optionally provide their own operand types as
/// needed, though this should not be needed for RISC targets.
class Operand<ValueType ty> {
ValueType Type = ty;
string PrintMethod = "printOperand";
- int NumMIOperands = 1;
dag MIOperandInfo = (ops);
}
def i32imm : Operand<i32>;
def i64imm : Operand<i64>;
+
+/// PredicateOperand - This can be used to define a predicate operand for an
+/// instruction. OpTypes specifies the MIOperandInfo for the operand, and
+/// AlwaysVal specifies the value of this predicate when set to "always
+/// execute".
+class PredicateOperand<dag OpTypes, dag AlwaysVal> : Operand<OtherVT> {
+ let MIOperandInfo = OpTypes;
+ dag ExecuteAlways = AlwaysVal;
+}
+
+
// InstrInfo - This class should only be instantiated once to provide parameters
// which are global to the the target machine.
//
let AsmString = "";
let Namespace = "TargetInstrInfo";
}
+def LABEL : Instruction {
+ let OperandList = (ops i32imm:$id);
+ let AsmString = "";
+ let Namespace = "TargetInstrInfo";
+ let hasCtrlDep = 1;
+}
//===----------------------------------------------------------------------===//
// AsmWriter - This class can be implemented by targets that need to customize
// 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;
}
//===----------------------------------------------------------------------===//
-// Pull in the common support for DAG isel generation
+// Pull in the common support for calling conventions.
+//
+include "TargetCallingConv.td"
+
+//===----------------------------------------------------------------------===//
+// Pull in the common support for DAG isel generation.
//
-include "../TargetSelectionDAG.td"
+include "TargetSelectionDAG.td"