DAGDefaultOps.td
3.53 KB
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// RUN: llvm-tblgen -gen-dag-isel -I %p/../../include %s -o %t
// RUN: FileCheck --check-prefix=ADD %s < %t
// RUN: FileCheck --check-prefix=ADDINT %s < %t
// RUN: FileCheck --check-prefix=SUB %s < %t
// RUN: FileCheck --check-prefix=MULINT %s < %t
include "llvm/Target/Target.td"
def TestInstrInfo : InstrInfo;
def TestTarget : Target {
let InstructionSet = TestInstrInfo;
}
class TestEncoding : Instruction {
field bits<32> Inst;
}
class TestReg<int index> : Register<"R"#index, []> {
let HWEncoding{15-4} = 0;
let HWEncoding{3-0} = !cast<bits<4>>(index);
}
foreach i = 0-15 in
def "R"#i : TestReg<i>;
def Reg : RegisterClass<"TestTarget", [i32], 32, (sequence "R%d", 0, 15)>;
def IntOperand: Operand<i32>;
def OptionalIntOperand: OperandWithDefaultOps<i32, (ops (i32 0))>;
class RRI<string Mnemonic, bits<4> Opcode> : TestEncoding {
dag OutOperandList = (outs Reg:$dest);
dag InOperandList = (ins Reg:$src1, Reg:$src2, OptionalIntOperand:$imm);
string AsmString = Mnemonic # " $dest1, $src1, $src2, #$imm";
string AsmVariantName = "";
field bits<4> dest;
field bits<4> src1;
field bits<4> src2;
field bits<16> imm;
let Inst{31-28} = Opcode;
let Inst{27-24} = dest;
let Inst{23-20} = src1;
let Inst{19-16} = src2;
let Inst{15-0} = imm;
}
def AddRRI : RRI<"add", 0b0001>;
// I define one of these intrinsics with IntrNoMem and the other
// without it, so that they'll match different top-level DAG opcodes
// (INTRINSIC_WO_CHAIN and INTRINSIC_W_CHAIN), which makes the
// FileCheck-herding easier, because every case I want to detect
// should show up as a separate top-level switch element.
def int_addplus1 : Intrinsic<
[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty], [IntrNoMem]>;
def int_mul3 : Intrinsic<
[llvm_i32_ty], [llvm_i32_ty, llvm_i32_ty, llvm_i32_ty]>;
def AddPat : Pat<(add i32:$x, i32:$y),
(AddRRI Reg:$x, Reg:$y)>;
def Add1Pat : Pat<(int_addplus1 i32:$x, i32:$y),
(AddRRI Reg:$x, Reg:$y, (i32 1))>;
def SubRRI : RRI<"sub", 0b0010> {
let Pattern = [(set Reg:$dest, (sub Reg:$src1, Reg:$src2))];
}
def MulRRI : RRI<"mul", 0b0011> {
let Pattern = [(set Reg:$dest, (int_mul3 Reg:$src1, Reg:$src2, i32:$imm))];
}
def MulIRR : RRI<"mul2", 0b0100> {
let InOperandList = (ins OptionalIntOperand:$imm, Reg:$src1, Reg:$src2);
}
def MulIRRPat : Pat<(mul i32:$x, i32:$y), (MulIRR Reg:$x, Reg:$y)>;
// ADD: SwitchOpcode{{.*}}TARGET_VAL(ISD::ADD)
// ADD-NEXT: OPC_RecordChild0
// ADD-NEXT: OPC_RecordChild1
// ADD-NEXT: OPC_EmitInteger, MVT::i32, 0
// ADD-NEXT: OPC_MorphNodeTo1, TARGET_VAL(::AddRRI)
// ADDINT: SwitchOpcode{{.*}}TARGET_VAL(ISD::INTRINSIC_WO_CHAIN)
// ADDINT-NEXT: OPC_CheckChild0Integer
// ADDINT-NEXT: OPC_RecordChild1
// ADDINT-NEXT: OPC_RecordChild2
// ADDINT-NEXT: OPC_EmitInteger, MVT::i32, 1
// ADDINT-NEXT: OPC_MorphNodeTo1, TARGET_VAL(::AddRRI)
// SUB: SwitchOpcode{{.*}}TARGET_VAL(ISD::SUB)
// SUB-NEXT: OPC_RecordChild0
// SUB-NEXT: OPC_RecordChild1
// SUB-NEXT: OPC_EmitInteger, MVT::i32, 0
// SUB-NEXT: OPC_MorphNodeTo1, TARGET_VAL(::SubRRI)
// MULINT: SwitchOpcode{{.*}}TARGET_VAL(ISD::INTRINSIC_W_CHAIN)
// MULINT-NEXT: OPC_RecordNode
// MULINT-NEXT: OPC_CheckChild1Integer
// MULINT-NEXT: OPC_RecordChild2
// MULINT-NEXT: OPC_RecordChild3
// MULINT-NEXT: OPC_RecordChild4
// MULINT-NEXT: OPC_EmitMergeInputChains
// MULINT-NEXT: OPC_MorphNodeTo1, TARGET_VAL(::MulRRI)
// MUL: SwitchOpcode{{.*}}TARGET_VAL(ISD::MUL)
// MUL-NEXT: OPC_EmitInteger, MVT::i32, 0
// MUL-NEXT: OPC_RecordChild0
// MUL-NEXT: OPC_RecordChild1
// MUL-NEXT: OPC_MorphNodeTo1, TARGET_VAL(::MulRRI)