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Move the 'Expander' node to later in the file, with the other experimental

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stuff.  The pattern becomes a list, add some stuff, add some comments.

llvm-svn: 15378
This commit is contained in:
Chris Lattner 2004-08-01 03:23:34 +00:00
parent 0717ef353d
commit d20c857ba0
1 changed files with 23 additions and 15 deletions
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38
lib/Target/Target.td
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@ -1,4 +1,4 @@
//===- Target.td - Target Independent TableGen interface --------*- C++ -*-===//
//===- Target.td - Target Independent TableGen interface ---*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
@ -105,13 +105,22 @@ class RegisterClass<ValueType regType, int alignment, list<Register> regList> {
// 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.
@ -121,15 +130,6 @@ class 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?
// Pattern - Set to the DAG pattern for this instruction, if we know of one,
// otherwise, uninitialized.
dag Pattern;
}
class Expander<dag pattern, list<dag> result> {
dag Pattern = pattern;
list<dag> Result = result;
}
@ -166,8 +166,16 @@ class Target {
//===----------------------------------------------------------------------===//
// DAG node definitions used by the instruction selector...
// 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