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Start adding usefulness to the DAG node definitions, add a new Expander

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@7634 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2003-08-06 15:31:02 +00:00
parent 2787d1a34b
commit 3e77d6e44c
1 changed files with 51 additions and 14 deletions
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65
lib/Target/Target.td
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@ -18,12 +18,9 @@ def i8 : ValueType<8>; // 8-bit integer value
def i16 : ValueType<16>; // 16-bit integer value
def i32 : ValueType<32>; // 32-bit integer value
def i64 : ValueType<64>; // 64-bit integer value
def i128 : ValueType<128>; // 128-bit integer value
def f32 : ValueType<32>; // 32-bit floating point value
def f64 : ValueType<64>; // 64-bit floating point value
def f80 : ValueType<80>; // 80-bit floating point value
def f128 : ValueType<128>; // 128-bit floating point value
//===----------------------------------------------------------------------===//
// Register file description - These classes are used to fill in the target
@ -109,6 +106,12 @@ class Instruction {
dag Pattern;
}
class Expander<dag pattern, list<dag> result> {
dag Pattern = pattern;
list<dag> Result = result;
}
// InstrInfo - This class should only be instantiated once to provide parameters
// which are global to the the target machine.
//
@ -144,14 +147,48 @@ class Target {
//===----------------------------------------------------------------------===//
// DAG node definitions used by the instruction selector...
//
def set; // FIXME: these are subject to substantial change
def plus;
def minus;
def mult;
def div;
def udiv;
def mod;
def umod;
def imm8;
def imm16;
def imm32;
class DagNodeResultType;
def DNRT_void : DagNodeResultType; // Tree node always returns void
def DNRT_val : DagNodeResultType; // A non-void type
def DNRT_arg0 : DagNodeResultType; // Tree node returns same type as Arg0
class DagNodeArgType;
def DNAT_val : DagNodeArgType; // Any value
def DNAT_arg0 : DagNodeArgType; // Same as for arg #0
def DNAT_ptr : DagNodeArgType; // Returns the target pointer type
class DagNode<DagNodeResultType ret, list<DagNodeArgType> args> {
DagNodeResultType RetType = ret;
list<DagNodeArgType> ArgTypes = args;
string EnumName = ?;
}
// BuiltinDagNodes are built into the instruction selector and correspond to
// enum values.
class BuiltinDagNode<DagNodeResultType Ret, list<DagNodeArgType> Args,
string Ename> : DagNode<Ret, Args> {
let EnumName = Ename;
}
// Magic nodes...
def set : DagNode<DNRT_void, [DNAT_val, DNAT_arg0]>;
// Terminals...
def imm : DagNode<DNRT_val, []>;
// Arithmetic...
def plus : BuiltinDagNode<DNRT_arg0, [DNAT_val, DNAT_arg0], "Plus">;
def minus : BuiltinDagNode<DNRT_arg0, [DNAT_val, DNAT_arg0], "Minus">;
//def mult : DagNode<2, DNRT_arg0>;
//def div : DagNode<2, DNRT_arg0>;
//def udiv : DagNode<2, DNRT_arg0>;
//def mod : DagNode<2, DNRT_arg0>;
//def umod : DagNode<2, DNRT_arg0>;
//def load : DagNode<1, DNRT_val>;
//def store : DagNode<2, DNRT_Void>;
// Other...
def ret : BuiltinDagNode<DNRT_void, [DNAT_val], "Ret">;
def retvoid : BuiltinDagNode<DNRT_void, [], "RetVoid">;