Difference between revisions of "NaplesPUInstrInfo.td"

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NuPlusInstrInfo.td and [[NuPlusInstrFormats.td]] describe the nu+ instructions and the patterns to transform LLVM IR into machine code. The NuPlusInstrInfo.td contains the instructions definition and the patterns necessary for the translation from the LLVM IR to the nu+ machine code.
 
NuPlusInstrInfo.td and [[NuPlusInstrFormats.td]] describe the nu+ instructions and the patterns to transform LLVM IR into machine code. The NuPlusInstrInfo.td contains the instructions definition and the patterns necessary for the translation from the LLVM IR to the nu+ machine code.
  
−
The files "compiler/include/llvm/Target/Target.td" and "compiler/include/llvm/Target/TargetSelectionDAG.td" contain the Tablegen classes used for the description.
+
<syntaxhighlight>
 +
//===-- NuPlusInstrInfo.td - Target Description for NuPlus Target -----------===//
 +
//
 +
//                    The LLVM Compiler Infrastructure
 +
//
 +
// This file is distributed under the University of Illinois Open Source
 +
// License. See LICENSE.TXT for details.
 +
//
 +
//===----------------------------------------------------------------------===//
 +
//
 +
// This file describes the NuPlus instructions in TableGen format.
 +
//
 +
//===----------------------------------------------------------------------===//
  
−
== Instructions definition ==
+
//===----------------------------------------------------------------------===//
 +
// Instruction format superclass
 +
//===----------------------------------------------------------------------===//
  
−
The instructions are the definition of the classes contained in the [[NuPlusInstrFormats.td]] file. The definition is done by selecting the appropriate class or multiclass and specifying the required arguments such as the '''opcode''', the '''asm radix''' and the '''pattern''' to match.
+
include "NuPlusInstrFormats.td"
  
−
Let's consider the definition of the integer '''ADD''' instructions. According to the [[ISA | nu+ ISA]], the ''ADD'' instruction has some variations depending on the operands' nature; e.g. they can be both stored in two 32-bit scalar registers or one of them is a 9-bit immediate. However, all these variations are encapsulated in the '''FArithInt_TwoOp''' multiclass. Thus, the ''ADD'' instruction is instantiated specifying the ''asm radix'' '''add''', the ''operand'' '''add''' and the ''opcode'' '''4'''.
+
//===----------------------------------------------------------------------===//
 +
// Instruction definition
 +
//===----------------------------------------------------------------------===//
  
−
<syntaxhighlight lang="c" line='line'>
+
//===----------------------------------------------------------------------===//
 +
// Arithmetic Instructions (Format R & I)
 +
//===----------------------------------------------------------------------===//
 +
 
 +
//Arithmetic Integer Two operands
 +
defm OR    : FArithInt_TwoOp<"or", or, 1>;
 +
defm AND    : FArithInt_TwoOp<"and", and, 2>;
 +
defm XOR    : FArithInt_TwoOp<"xor", xor, 3>;
 
defm ADD    : FArithInt_TwoOp<"add", add, 4>;
 
defm ADD    : FArithInt_TwoOp<"add", add, 4>;
−
</syntaxhighlight>
+
defm SUB    : FArithInt_TwoOp<"sub", sub, 5>;
 +
defm MULL  : FArithInt_TwoOp<"mull", mul, 6>;
 +
defm MULH  : FArithInt_TwoOp<"mulhs", mulhs, 7>;
 +
defm MULHU  : FArithInt_TwoOp<"mulhu", mulhu, 8>;
 +
defm SRA    : FSRInt_TwoOp<"ashr", sra, 9>;
 +
defm SRL    : FSRInt_TwoOp<"shr", srl, 10>;
 +
defm SLL    : FSRInt_TwoOp<"shl", shl, 11>;
 +
//Arithmetic Integer One operand
 +
defm CLZ    : FArithInt_OneOp<"clz", ctlz, 12>;
 +
defm CTZ    : FArithInt_OneOp<"ctz", cttz, 13>;
 +
//Compare Integer
 +
defm SEQSI : FCompInt<"cmpeq", SETEQ, 14, int_nuplus_mask_cmpi32_eq>;//, int_nuplus_mask_cmpi64_eq>;
 +
defm SNESI : FCompInt<"cmpne", SETNE, 15, int_nuplus_mask_cmpi32_ne>;//, int_nuplus_mask_cmpi64_ne>;
 +
defm SGTSI : FCompInt<"cmpgt", SETGT, 16, int_nuplus_mask_cmpi32_sgt>;//, int_nuplus_mask_cmpi64_sgt>;
 +
defm SGESI : FCompInt<"cmpge", SETGE, 17, int_nuplus_mask_cmpi32_sge>;//, int_nuplus_mask_cmpi64_sge>;
 +
defm SLTSI : FCompInt<"cmplt", SETLT, 18, int_nuplus_mask_cmpi32_slt>;//, int_nuplus_mask_cmpi64_slt>;
 +
defm SLESI : FCompInt<"cmple", SETLE, 19, int_nuplus_mask_cmpi32_sle>;//, int_nuplus_mask_cmpi64_sle>;
 +
//Compare Unsigned
 +
defm SGTUI : FCompInt<"cmpugt", SETUGT, 20, int_nuplus_mask_cmpi32_ugt>;//, int_nuplus_mask_cmpi64_ugt>;
 +
defm SGEUI : FCompInt<"cmpuge", SETUGE, 21, int_nuplus_mask_cmpi32_uge>;//, int_nuplus_mask_cmpi64_uge>;
 +
defm SLTUI : FCompInt<"cmpult", SETULT, 22, int_nuplus_mask_cmpi32_ult>;//, int_nuplus_mask_cmpi64_ult>;
 +
defm SLEUI : FCompInt<"cmpule", SETULE, 23, int_nuplus_mask_cmpi32_ule>;//, int_nuplus_mask_cmpi64_ule>;
 +
 
 +
//Cross Product Instruction
 +
def CROSSPROD_32 : FR_TwoOp_Unmasked_32 <
 +
  (outs VR512W:$dst),
 +
  (ins VR512W:$src0, VR512W:$src1),
 +
  "crp $dst, $src0, $src1",
 +
  [(set v16i32:$dst, (int_nuplus_crossprodv16i32 v16i32:$src0, v16i32:$src1))],
 +
  63,
 +
  Fmt_V,
 +
  Fmt_V,
 +
  Fmt_V>;
 +
 
 +
//Shuffle
 +
def SHUFFLEI_32 : FR_TwoOp_Unmasked_32<
 +
  (outs VR512W:$dst),
 +
  (ins VR512W:$src0, VR512W:$src1),
 +
  "shuffle_i32 $dst, $src0, $src1",
 +
  [(set v16i32:$dst, (int_nuplus_shufflei32 v16i32:$src0, v16i32:$src1))],
 +
  24,
 +
  Fmt_V,
 +
  Fmt_V,
 +
  Fmt_V>;
 +
 
 +
//Get lane
 +
def GET_LANEI_32 : FR_TwoOp_Unmasked_32<
 +
  (outs GPR32:$dst),
 +
  (ins VR512W:$src0, GPR32:$src1),
 +
  "getlane_i32 $dst, $src0, $src1",
 +
  [(set i32:$dst, (extractelt v16i32:$src0, i32:$src1))],
 +
  25,
 +
  Fmt_S,
 +
  Fmt_V,
 +
  Fmt_S>;
 +
 
 +
def GET_LANEIimm : FI_OneOp_Unmasked<
 +
  (outs GPR32:$dst),
 +
  (ins VR512W:$src, SIMM9OP:$imm),
 +
  "getlanei $dst, $src, $imm",
 +
  [(set i32:$dst, (extractelt v16i32:$src, simm9:$imm))],
 +
  25,
 +
  Fmt_S,
 +
  Fmt_V>;
 +
 
 +
//Move register - register
 +
def MOVE_SS_32 : FR_OneOp_Unmasked_32<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$src0),
 +
  "move_i32 $dst, $src0",
 +
  [],
 +
  32,
 +
  Fmt_S,
 +
  Fmt_S>;
 +
 
 +
def MOVE_VS_32 : FR_OneOp_Unmasked_32<
 +
  (outs VR512W:$dst),
 +
  (ins GPR32:$src0),
 +
  "move_i32 $dst, $src0",
 +
  [(set v16i32:$dst, (splat i32:$src0))],
 +
  32,
 +
  Fmt_V,
 +
  Fmt_S>;
 +
 
 +
def MOVE_VV_32 : FR_OneOp_Unmasked_32<
 +
  (outs VR512W:$dst),
 +
  (ins VR512W:$src0),
 +
  "move_i32 $dst, $src0",
 +
  [],
 +
  32,
 +
  Fmt_V,
 +
  Fmt_V>;
 +
 
 +
let Constraints = "$dst = $oldvalue", isAsmParserOnly=1 in {
 +
 
 +
  def MOVE_VS_M_32 : FR_OneOp_Unmasked_32<
 +
    (outs VR512W:$dst),
 +
    (ins GPR32:$src0, VR512W:$oldvalue),
 +
    "move_i32 $dst, $src0",
 +
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 (splat i32:$src0), v16i32:$oldvalue))],
 +
    32,
 +
    Fmt_V,
 +
    Fmt_S>;
 +
 
 +
  def MOVE_VV_M_32 : FR_OneOp_Unmasked_32<
 +
    (outs VR512W:$dst),
 +
    (ins VR512W:$src0, VR512W:$oldvalue),
 +
    "move_i32 $dst, $src0",
 +
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 v16i32:$src0, v16i32:$oldvalue))],
 +
    32,
 +
    Fmt_V,
 +
    Fmt_V>;
 +
 
 +
}
 +
 
 +
//Arithmetic Float Two operands
 +
defm ADDF  : FArithFloat_TwoOp<"fadd", fadd, 33>;
 +
defm SUBF  : FArithFloat_TwoOp<"fsub", fsub, 34>;
 +
defm MULF  : FArithFloat_TwoOp<"fmul", fmul, 35>;
 +
defm DIVF  : FArithFloat_TwoOp<"fdiv", fdiv, 36>;
 +
//Compare Float
 +
def FloatCompareType: SDTypeProfile<1, 2, [
 +
  SDTCisInt<0>, SDTCisFP<1>, SDTCisSameAs<1, 2>
 +
]>;
 +
def FGT: SDNode<"NuPlusISD::FGT", FloatCompareType>;
 +
def FGE: SDNode<"NuPlusISD::FGE", FloatCompareType>;
 +
def FLT: SDNode<"NuPlusISD::FLT", FloatCompareType>;
 +
def FLE: SDNode<"NuPlusISD::FLE", FloatCompareType>;
 +
def FEQ: SDNode<"NuPlusISD::FEQ", FloatCompareType>;
 +
def FNE: SDNode<"NuPlusISD::FNE", FloatCompareType>;
 +
 
 +
defm SEQFO : FCompFloat<"cmpfeq", FEQ, 37, int_nuplus_mask_cmpf32_eq>;//, int_nuplus_mask_cmpf64_eq>;
 +
defm SNEFO : FCompFloat<"cmpfne", FNE, 38, int_nuplus_mask_cmpf32_ne>;//, int_nuplus_mask_cmpf64_ne>;
 +
defm SGTFO : FCompFloat<"cmpfgt", FGT, 39, int_nuplus_mask_cmpf32_gt>;//, int_nuplus_mask_cmpf64_gt>;
 +
defm SGEFO : FCompFloat<"cmpfge", FGE, 40, int_nuplus_mask_cmpf32_ge>;//, int_nuplus_mask_cmpf64_ge>;
 +
defm SLTFO : FCompFloat<"cmpflt", FLT, 41, int_nuplus_mask_cmpf32_lt>;//, int_nuplus_mask_cmpf64_lt>;
 +
defm SLEFO : FCompFloat<"cmpfle", FLE, 42, int_nuplus_mask_cmpf32_le>;//, int_nuplus_mask_cmpf64_le>;
 +
 
 +
//sign extension
 +
defm SEXT8_32 : FSext_32<"sext8", i8, 43, v16i8>;
 +
defm SEXT16_32 : FSext_32<"sext16", i16, 44, v16i16>;
 +
 
 +
//Integer to Float conversion
 +
def I32TOF32_SS : FR_OneOp_Unmasked_32<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$src0),
 +
  "itof_i32 $dst, $src0",
 +
  [(set f32:$dst, (sint_to_fp i32:$src0))],
 +
  48,
 +
  Fmt_S,
 +
  Fmt_S>;
 +
 
 +
def I32TOF32_VV_U : FR_OneOp_Unmasked_32<
 +
  (outs VR512W:$dst),
 +
  (ins VR512W:$src0),
 +
  "itof_i32 $dst, $src0",
 +
  [(set v16f32:$dst, (sint_to_fp v16i32:$src0))],
 +
  48,
 +
  Fmt_V,
 +
  Fmt_V>;
 +
 
 +
let Constraints = "$dst = $oldvalue" in {
 +
  def I32TOF32_VV_M : FR_OneOp_Masked_32<
 +
    (outs VR512W:$dst),
 +
    (ins VR512W:$src0, VR512W:$oldvalue),
 +
    "itof_i32.m $dst, $src0",
 +
    [(set v16f32:$dst, (int_nuplus_vector_mixf32 (sint_to_fp v16i32:$src0), v16f32:$oldvalue))],
 +
    48,
 +
    Fmt_V,
 +
    Fmt_V>;
 +
 
 +
}
 +
 
 +
//Float to Integer conversion
 +
def F32TOI32_SS : FR_OneOp_Unmasked_32<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$src0),
 +
  "ftoi_i32 $dst, $src0",
 +
  [(set i32:$dst, (fp_to_sint f32:$src0))],
 +
  49,
 +
  Fmt_S,
 +
  Fmt_S>;
 +
 
 +
def F32TOI32_VV_U : FR_OneOp_Unmasked_32<
 +
  (outs VR512W:$dst),
 +
  (ins VR512W:$src0),
 +
  "ftoi_i32 $dst, $src0",
 +
  [(set v16i32:$dst, (fp_to_sint v16f32:$src0))],
 +
  49,
 +
  Fmt_V,
 +
  Fmt_V>;
 +
 
 +
let Constraints = "$dst = $oldvalue" in {
 +
  def F32TOI32_VV_M : FR_OneOp_Masked_32<
 +
    (outs VR512W:$dst),
 +
    (ins VR512W:$src0, VR512W:$oldvalue),
 +
    "ftoi_i32.m $dst, $src0",
 +
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 (fp_to_sint v16f32:$src0), v16i32:$oldvalue))],
 +
    49,
 +
    Fmt_V,
 +
    Fmt_V>;
 +
 
 +
}
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// MOVEI Instructions (Format MOVEI)
 +
//===----------------------------------------------------------------------===//
 +
 
 +
defm MOVEIL : FMOVEI_ALL<"moveil", 0>;
 +
defm MOVEIH : FMOVEI_ALL<"moveih", 1>;
 +
defm MOVEI : FMOVEI_ALL<"movei", 2>;
 +
 
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// LOAD/STORE SPECIAL REGISTERS
 +
//===----------------------------------------------------------------------===//
 +
 
 +
def READMR  : READ_SPR<MaskReg, "read_mr", int_nuplus_read_mask_reg>;
 +
def WRITEMR : WRITE_SPR<MaskReg, "write_mr", int_nuplus_write_mask_reg>;
 +
 
 +
//Create Mask Instruction
 +
def CREATEMASK_32 : FR_OneOp_Unmasked_32 <
 +
  (outs GPR32:$dst),
 +
  (ins VR512W:$src0),
 +
  "crt_mask_i32 $dst, $src0",
 +
  [(set i32:$dst, (int_nuplus_createmaskv16i32 v16i32:$src0))],
 +
  50,
 +
  Fmt_S,
 +
  Fmt_V>;
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// MEM Instructions (Format M)
 +
//===----------------------------------------------------------------------===//
 +
 
 +
// Scalar load to 32-bit registers
 +
defm L32BS : FMLoadScalar_32<"_s8", sextloadi8_mem, sextloadi8_scratch, 0>;
 +
defm L32SS : FMLoadScalar_32<"_s16", sextloadi16_mem, sextloadi16_scratch, 1>;
 +
defm L32W  : FMLoadScalar_32<"", MemLoad, ScratchpadLoad, 2>;
 +
defm L32BU : FMLoadScalar_32<"_u8", zextloadi8_mem, zextloadi8_scratch, 4>;
 +
defm L32SU : FMLoadScalar_32<"_u16", zextloadi16_mem, zextloadi16_scratch, 5>;
 +
defm S32B : FMStoreScalar_32<"_8", truncstorei8_mem, truncstorei8_scratch, 32>;
 +
defm S32S : FMStoreScalar_32<"_16", truncstorei16_mem, truncstorei16_scratch, 33>;
 +
defm S32W : FMStoreScalar_32<"", MemStore, ScratchpadStore, 34>;
 +
//--------------------------------------------------------------------------------//
 +
//Vector load block
 +
//--------------------------------------------------------------------------------//
 +
 
 +
// Vector load to 32-bit registers
 +
defm LV32B : FMLoadVector_32<"_v16i8", sextloadv16i8_mem, sextloadv16i8_scratch,
 +
                              int_nuplus_block_loadv16i8_masked, int_nuplus_block_loadv16i8_scratchpad_masked,
 +
                              7>;
 +
defm LV32S : FMLoadVector_32<"_v16i16", sextloadv16i16_mem, sextloadv16i16_scratch,
 +
                              int_nuplus_block_loadv16i16_masked, int_nuplus_block_loadv16i16_scratchpad_masked,
 +
                              8>;
 +
defm LV32W : FMLoadVector_32<"_v16i32", MemLoad, ScratchpadLoad,
 +
                              int_nuplus_block_loadv16i32_masked, int_nuplus_block_loadv16i32_scratchpad_masked,
 +
                              9>;
 +
 
 +
defm LV32BU : FMLoadVector_32<"_v16u8", zextloadv16i8_mem, zextloadv16i8_scratch,
 +
                              int_nuplus_block_loadv16u8_masked, int_nuplus_block_loadv16u8_scratchpad_masked,
 +
                              11>;
 +
defm LV32SU : FMLoadVector_32<"_v16u16", zextloadv16i16_mem, zextloadv16i16_scratch,
 +
                              int_nuplus_block_loadv16u16_masked, int_nuplus_block_loadv16u16_scratchpad_masked,
 +
                              12>;
 +
//--------------------------------------------------------------------------------//
 +
//Vector load gather
 +
//--------------------------------------------------------------------------------//
 +
 
 +
// Vector gather to 32-bit registers
 +
defm GLV32W : FMGather_32<"32", int_nuplus_gather_loadi32_scratchpad,
 +
                          int_nuplus_gather_loadi32_scratchpad_masked,
 +
                          16>;
 +
 
 +
//--------------------------------------------------------------------------------//
 +
//Vector store block
 +
//--------------------------------------------------------------------------------//
 +
 
 +
// Vector store from 32-bit registers
 +
defm SV32B : FMStoreVector_32<"_v16i8", truncstorev16i8_mem, truncstorev16i8_scratch,
 +
                              int_nuplus_block_storev16i8_masked, int_nuplus_block_storev16i8_scratchpad_masked,
 +
                              36>;
 +
defm SV32S : FMStoreVector_32<"_v16i16", truncstorev16i16_mem, truncstorev16i16_scratch,
 +
                              int_nuplus_block_storev16i16_masked, int_nuplus_block_storev16i16_scratchpad_masked,
 +
                              37>;
 +
defm SV32W : FMStoreVector_32<"_v16i32", MemStore, ScratchpadStore,
 +
                              int_nuplus_block_storev16i32_masked, int_nuplus_block_storev16i32_scratchpad_masked,
 +
                              38>;
 +
 
 +
//--------------------------------------------------------------------------------//
 +
//Vector store scatter
 +
//--------------------------------------------------------------------------------//
 +
 
 +
// Vector scatter from 32-bit registers
 +
defm SSV32W : FMScatter_32<"32",int_nuplus_scatter_storei32_scratchpad,
 +
                              int_nuplus_scatter_storei32_scratchpad_masked,
 +
                              42>;
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// Jump and Branch Instructions (Format J/JR)
 +
//===----------------------------------------------------------------------===//
 +
 
 +
let isTerminator = 1 in {
 +
  //Unconditional jump with offset, PC:=PC+addr
 +
  def JMP : FJ<
 +
    (outs),
 +
    (ins brtarget:$addr),
 +
    "jmp $addr",
 +
    [(br bb:$addr)],
 +
    0>
 +
  {
 +
    let isBarrier = 1;
 +
  }
 +
 
 +
  //Unconditional jump with register PC:=DST
 +
  def JUMPREG : FJR<
 +
  (outs),
 +
  (ins GPR32:$cond),
 +
  "jmp $cond",
 +
  [(brind i32:$cond)],
 +
  0>
 +
  {
 +
    let isBranch = 1;
 +
    let isIndirectBranch = 1;
 +
    let isBarrier = 1;
 +
  }
 +
 
 +
  // Return PC:=RA
 +
  def JRET : FJR<
 +
  (outs),
 +
  (ins),
 +
  "jret",
 +
  [(return)],
 +
  3>
 +
  {
 +
    let Inst{23-18} = 0;
 +
    let Inst{17-0} = 0;
 +
 
 +
    let isReturn = 1;
 +
    let isTerminator = 1;
 +
    let isBarrier = 1;
 +
  }
 +
 
 +
  //Conditional Branch
 +
  def BEQZ : FJR<
 +
    (outs),
 +
    (ins GPR32:$cond, brtarget:$addr),
 +
    "beqz $cond, $addr",
 +
    [],
 +
    5>;
 +
 
 +
  //Conditional Branch
 +
  def BNEZ : FJR<
 +
    (outs),
 +
    (ins GPR32:$cond, brtarget:$addr),
 +
    "bnez $cond, $addr",
 +
    [],
 +
    6>;
 +
}
 +
 
 +
let isCall = 1, Defs = [ RA_REG ] in {
 +
  //Jump with offset and save return address RA:=PC+4, PC:=PC+addr
 +
  def JMPSR_OFF : FJ<
 +
    (outs),
 +
    (ins calltarget:$addr, variable_ops),
 +
    "jmpsr $addr",
 +
    [],
 +
    1>;
 +
 
 +
  //Jump with register and save return address RA:=PC+4, PC:=DST
 +
  def JMPSR_REG : FJR<
 +
    (outs),
 +
    (ins GPR32:$dst, variable_ops),
 +
    "jmpsr $dst",
 +
    [(call i32:$dst)],
 +
    1>
 +
  {
 +
    bits<6> dst;
 +
 
 +
    let Inst{23-18} = dst;
 +
  }
 +
}
 +
 +
//===----------------------------------------------------------------------===//
 +
// Control Instructions (Format C)
 +
//===----------------------------------------------------------------------===//
 +
 
 +
def BARRIER : FC<
 +
  (outs),
 +
  (ins GPR32:$src0, GPR32:$src1),
 +
  "barrier $src0, $src1",
 +
  [(int_nuplus_barrier i32:$src0, i32:$src1)],
 +
  0>;
 +
 
 +
def FLUSH : FC<
 +
  (outs),
 +
  (ins GPR32:$src0),
 +
  "flush $src0",
 +
  [(int_nuplus_flush i32:$src0)],
 +
  2>{
 +
    let Inst{17-12} = 0;
 +
  }
 +
 
 +
// READ Control Register
 +
def READCR : FC<
 +
  (outs GPR32:$src0),
 +
  (ins GPR32:$src1),
 +
  "read_cr $src0, $src1",
 +
  [(set i32:$src0, (int_nuplus_read_control_reg i32:$src1))],
 +
  3>;
 +
 
 +
// WRITE Control Register
 +
def WRITECR : FC<
 +
  (outs),
 +
  (ins GPR32:$src0, GPR32:$src1),
 +
  "write_cr $src0, $src1",
 +
  [(int_nuplus_write_control_reg i32:$src0, i32:$src1)],
 +
  4>;
 +
 
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// Miscellaneous Instructions
 +
//===----------------------------------------------------------------------===//
 +
 
 +
def NOP : InstNuPlus<
 +
  (outs),
 +
  (ins),
 +
  "nop",
 +
  []>
 +
{
 +
  let Inst{31-0} = 0xffffffff;
 +
}
 +
 
 +
def LOAD_EFFECTIVE_ADDR : InstNuPlus<
 +
  (outs GPR32:$dst),
 +
  (ins LEAri:$addr),
 +
  "_lea $dst, $addr",
 +
  [(set i32:$dst, ADDRri:$addr)]> {
 +
 
 +
  let isAsmParserOnly = 1;  // Don't disassemble
 +
 
 +
  bits<16> addr;
 +
  bits<6> dst;
 +
 
 +
  let Inst{31-29} = 0b010;
 +
  let Inst{28-24} = 4;
 +
  let Inst{23-18} = dst;
 +
  let Inst{17-2} = addr;
 +
  let Inst{1} = 0;
 +
  let Inst{0} = 0;
 +
 
 +
}
 +
 
 +
//TODO: (Catello) Add symbol in NuPlusAsmParser::ProcessInstruction.
 +
// This node defines the lea pseudo-instruction that can be used in
 +
// assembly files.
 +
def LOAD_EFFECTIVE_ADDR_SYM : InstNuPlus<
 +
  (outs GPR32:$dst),
 +
  (ins symref:$label),
 +
  "lea $dst, $label",
 +
  []> {
 +
 
 +
  let isPseudo = 1;
 +
 
 +
}
 +
 
 +
def LEAH : InstNuPlus<
 +
  (outs GPR32:$dst),
 +
  (ins ABSh:$addr),
 +
  "leah $dst, $addr",
 +
  []> {
 +
  let isAsmParserOnly = 1;  // Don't disassemble
 +
 
 +
  bits<16> addr;
 +
  bits<6> dst;
 +
 
 +
  let Inst{31-27} = 0b01100; // Format MOVEI
 +
  let Inst{26-24} = 1; //Opcode MOVEI
 +
  let Inst{23-18} = dst;
 +
  let Inst{17-2} = addr;
 +
  let Inst{1} = 0;
 +
  let Inst{0} = 0;
 +
}
 +
 
 +
 
 +
def LEAL : InstNuPlus<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$addrh, ABSl:$addr),
 +
  "leal $dst, $addr",
 +
  []> {
 +
  let isAsmParserOnly = 1;  // Don't disassemble
 +
 
 +
  //costraint used to let llvm use the same destination register as leah
 +
  let Constraints = "$dst = $addrh";
 +
 
 +
  bits<16> addr;
 +
  bits<6> dst;
 +
 
 +
  let Inst{31-27} = 0b01100; // Format MOVEI
 +
  let Inst{26-24} = 0; //Opcode MOVEI
 +
  let Inst{23-18} = dst;
 +
  let Inst{17-2} = addr;
 +
  let Inst{1} = 0;
 +
  let Inst{0} = 0;
 +
}
 +
 
 +
 
 +
 
 +
//===----------------------------------------------------------------------===//
 +
// Pseudo instructions
 +
//===----------------------------------------------------------------------===//
 +
 
 +
// These pseudo ops capture outgoing argument space on the stack and will be removed
 +
// by later passes.
 +
let Defs = [ SP_REG ], Uses = [ SP_REG ], hasSideEffects = 1 in {
 +
  def ADJCALLSTACKDOWN : Pseudo<
 +
    (outs),
 +
    (ins i32imm:$amt1, i32imm:$amt2),
 +
    [(callseq_start timm:$amt1, timm:$amt2)]>;
 +
 +
  def ADJCALLSTACKUP : Pseudo<
 +
    (outs),
 +
    (ins i32imm:$amt1, i32imm:$amt2),
 +
    [(callseq_end timm:$amt1, timm:$amt2)]>;
 +
}
 +
 
 +
// SELECT pseudo instructions. This architecture doesn't actually have a scalar
 +
// conditional move instruction. These will be replaced in a later pass
 +
// with a diamond pattern of conditional branches.
 +
//
 +
let usesCustomInserter = 1 in {
 +
  def SELECTI : Pseudo<
 +
    (outs GPR32:$dst),
 +
    (ins GPR32:$pred, GPR32:$true, GPR32:$false),
 +
    [(set i32:$dst, (selcondresult i32:$pred, i32:$true, i32:$false))]>;
 +
 
 +
  def SELECTF : Pseudo<
 +
    (outs GPR32:$dst),
 +
    (ins GPR32:$pred, GPR32:$true, GPR32:$false),
 +
    [(set f32:$dst, (selcondresult i32:$pred, f32:$true, f32:$false))]>;
 +
 
 +
  def SELECTVI : Pseudo<
 +
    (outs VR512W:$dst),
 +
    (ins GPR32:$pred, VR512W:$true, VR512W:$false),
 +
    [(set v16i32:$dst, (selcondresult i32:$pred, v16i32:$true, v16i32:$false))]>;
 +
 
 +
  def SELECTVF : Pseudo<
 +
    (outs VR512W:$dst),
 +
    (ins GPR32:$pred, VR512W:$true, VR512W:$false),
 +
    [(set v16f32:$dst, (selcondresult i32:$pred, v16f32:$true, v16f32:$false))]>;
 +
}
 +
 
 +
let usesCustomInserter = 1 in {
 +
  def LoadI32 : Pseudo<
 +
    (outs GPR32:$dst),
 +
    (ins GPR32:$val),
 +
    [(set i32:$dst, (i32 imm:$val))]>;
 +
 
 +
  def LoadF32 : Pseudo<
 +
    (outs GPR32:$dst),
 +
    (ins GPR32:$val),
 +
    [(set f32:$dst, (f32 fpimm:$val))]>;
 +
 
 +
}
 +
 
 +
let usesCustomInserter = 1 in {
 +
  def InsertELT32 : Pseudo<
 +
    (outs VR512W:$dst),
 +
    (ins VR512W:$vec, GPR32:$elem, GPR32:$pos),
 +
    [(set v16i32:$dst, (insert_elt v16i32:$vec, i32:$elem, i32:$pos))]>;
 +
 
 +
}
 +
 
 +
def : Pat <(v16f32 (insert_elt v16f32:$vec, f32:$elem, i32:$pos)), (v16f32 (InsertELT32 v16f32:$vec, f32:$elem, i32:$pos))>;
 +
 
 +
// Atomics
 +
let usesCustomInserter = 1 in {
 +
defm ATOMIC_LOAD_ADD : AtomicBinary<atomic_load_add>;
 +
defm ATOMIC_LOAD_SUB : AtomicBinary<atomic_load_sub>;
 +
defm ATOMIC_LOAD_AND : AtomicBinary<atomic_load_and>;
 +
defm ATOMIC_LOAD_OR  : AtomicBinary<atomic_load_or>;
 +
defm ATOMIC_LOAD_XOR : AtomicBinary<atomic_load_xor>;
 +
defm ATOMIC_LOAD_NAND : AtomicBinary<atomic_load_nand>;
 +
 
 +
def ATOMIC_CMP_SWAP : Pseudo<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$ptr, GPR32:$cmp, GPR32:$swap),
 +
  [(set i32:$dst, (atomic_cmp_swap GPR32:$ptr, GPR32:$cmp, GPR32:$swap))]>;
 +
 
 +
def ATOMIC_SWAP : Pseudo<
 +
  (outs GPR32:$dst),
 +
  (ins GPR32:$ptr, GPR32:$swap),
 +
  [(set i32:$dst, (atomic_swap GPR32:$ptr, GPR32:$swap))]>;
 +
}
  
−
== Pattern matching ==
+
//===----------------------------------------------------------------------===//
−
During the instruction selection phase, there are some cases in which the instructions do not match with any specified pattern in the instruction definition, or the resulting legalized DAG does not contain the desired machine nodes. There are several ways to overcome this situation, some of which requires the modification of the [[NuPlusTargetLowering]] class. However the easiest way is to define a tablegen anonymous pattern, by instantiating the class '''Pat'''.
+
// Non-Instruction Patterns
 +
//===----------------------------------------------------------------------===//
  
−
<syntaxhighlight lang="c" line='line'>
+
// Shuffle patterns
−
class Pat<dag pattern, dag result> : Pattern<pattern, [result]>;
+
def : Pat<(int_nuplus_shufflef32 v16f32:$src0, v16i32:$src1),
−
</syntaxhighlight>
+
  (SHUFFLEI_32 v16f32:$src0, v16i32:$src1)>;
  
−
Keep in mind that this solution affects how the input DAG is transformed into a legalized DAG, so the only type of dependency is the '''data dependecy''' among the operations expressed as nodes.
+
// Splat patterns
  
−
In the NuPlusInstrInfo.td file there is an entire section dedicated to these patterns. Their main aim is to map '''intrinsics''' or different operations to a single machine-dependent operation. Let's consider some examples.
+
def : Pat<(v16i32 (splat i32:$src0)), (MOVE_VS_32 i32:$src0)>;
 +
def : Pat<(v16f32 (splat f32:$src0)), (MOVE_VS_32 f32:$src0)>;
  
−
This first example shows how the Pat class can be used to achieve complex pattern transformation. The purpose of the pattern is to emit the necessary nodes to load a 64-bit immediate in nu+. The goal is to break the immediate value in two 32-bit parts and load them in the sub-registers of a 64-bit register in a little-endian fashion.
+
def : Pat<(int_nuplus_vector_mixf32 v16f32:$src0, v16f32:$oldvalue),
−
The pattern to match is '''(i64 imm:$val)'''; ''i64'' is the operation of 64-bit load, while ''imm:$val'' defines that the operand '''val''' is an immediate '''imm'''. This pattern is translated in the DAG reported in the second part of the definition. The order is from the inner node the the outer. 
+
          (MOVE_VV_M_32 v16f32:$src0, v16f32:$oldvalue)>;
−
<syntaxhighlight lang="c" line='line'>
 
−
def : Pat<(i64 imm:$val),
 
−
      (INSERT_SUBREG (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
 
−
                      (LoadI32 (i32 (HI32I $val))),
 
−
                      sub_odd),
 
−
      (LoadI32 (i32 (LO32I $val))),
 
−
      sub_even)>;
 
−
</syntaxhighlight>
 
  
−
The following example shows other uses of the Pat class, easier to understand than the previous one. The '''zextloadi1''' nodes are defined in [[NuPlusInstrFormats.td]] and match loads followed by a zero extension.
+
//---------------- Patterns for load and store ----------------//
−
<syntaxhighlight lang="c" line='line'>
+
//---------------- scalar load and store ----------------//
 +
// zextload bool -> zextload byte
 
def : Pat<(i32 (zextloadi1_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
 
def : Pat<(i32 (zextloadi1_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
−
def : Pat<(i64 (zextloadi1_mem ADDRri:$addr)), (L64BU_Mainmem ADDRri:$addr)>;
 
 
def : Pat<(i32 (zextloadi1_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
 
def : Pat<(i32 (zextloadi1_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
−
def : Pat<(i64 (zextloadi1_scratch ADDRri:$addr)), (L64BU_Scratchpad ADDRri:$addr)>;
 
−
</syntaxhighlight>
 
  
−
== Pseudo-instructions ==
+
//---------------- scalar extload->zextload ----------------//
−
In LLVM, a pseudo-instruction is defined by setting the value '''isPseudo''' to 1. There are also other flags such as '''isCodeGenOnly''' and '''isAsmParserOnly''', which purpose is to help with codegen modeling. In particular:
+
// Scalar load to 32-bit registers
−
*If isPseudo = 1, the instruction is considered a pseudo-instruction with no encoding informations and should be expanded, at the latest, during lowering to MCInst.
+
def : Pat<(i32 (extloadi1_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
−
*If isCodeGenOnly = 1, the instruction does have encoding information and can go through to the CodeEmitter unchanged, but duplicates a canonical instruction definition's encoding and should be ignored when constructing the assembler match tables.
+
def : Pat<(i32 (extloadi8_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
−
*If isAsmParserOnly = 1, the instruction is a pseudo-instruction for use by the assembler parser.
+
def : Pat<(i32 (extloadi16_mem ADDRri:$addr)), (L32SU_Mainmem ADDRri:$addr)>;
 +
def : Pat<(f32 (MemLoad ADDRri:$addr)), (L32W_Mainmem ADDRri:$addr)>;
 +
def : Pat<(i32 (extloadi1_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
 +
def : Pat<(i32 (extloadi8_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
 +
def : Pat<(i32 (extloadi16_scratch ADDRri:$addr)), (L32SU_Scratchpad ADDRri:$addr)>;
 +
def : Pat<(f32 (ScratchpadLoad ADDRri:$addr)), (L32W_Scratchpad ADDRri:$addr)>;
 +
 
 +
//---------------- scalar f32 load-> i32 load ----------------//
 +
// Scalar store to 32-bit registers
 +
def : Pat<(MemStore f32:$dstsrc, ADDRri:$addr), (S32W_Mainmem f32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore f32:$dstsrc, ADDRri:$addr), (S32W_Scratchpad f32:$dstsrc, ADDRri:$addr)>;
 +
 
 +
//---------------- vector load and store ----------------//
 +
//---------------- intrinsics load and store ----------------//
 +
//integer
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16i8 ADDRri:$addr)), (v16i32 (LV32BMainmem_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16i8_scratchpad ADDRri:$addr)), (v16i32 (LV32BScratchpad_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16u8 ADDRri:$addr)), (v16i32 (LV32BUMainmem_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16u8_scratchpad ADDRri:$addr)), (v16i32 (LV32BUScratchpad_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16i16 ADDRri:$addr)), (v16i32 (LV32SMainmem_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16i16_scratchpad ADDRri:$addr)), (v16i32 (LV32SScratchpad_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16u16 ADDRri:$addr)), (v16i32 (LV32SUMainmem_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16u16_scratchpad ADDRri:$addr)), (v16i32 (LV32SUScratchpad_U ADDRri:$addr))>;
 +
def : Pat<(v16i32 (int_nuplus_block_loadv16i32_scratchpad ADDRri:$addr)), (v16i32 (LV32WScratchpad_U ADDRri:$addr))>;
 +
 
 +
def : Pat<(int_nuplus_block_storev16i8 ADDRri:$addr, v16i32:$dstsrc), (SV32BMainmem_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16i8_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32BScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16i16 ADDRri:$addr, v16i32:$dstsrc), (SV32SMainmem_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16i16_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32SScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16i32_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32WScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
 
 +
//float
 +
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_scratchpad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;
 +
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_masked ADDRri:$addr)), (LV32WMainmem_M ADDRri:$addr)>;
 +
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_scratchpad_masked ADDRri:$addr)), (LV32WScratchpad_M ADDRri:$addr)>;
 +
 
 +
def : Pat<(int_nuplus_block_storev16f32_scratchpad ADDRri:$addr, v16f32:$dstsrc), (SV32WScratchpad_U v16f32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16f32_masked ADDRri:$addr, v16f32:$dstsrc), (SV32WMainmem_M v16f32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_block_storev16f32_scratchpad_masked ADDRri:$addr, v16f32:$dstsrc), (SV32WScratchpad_M v16f32:$dstsrc, ADDRri:$addr)>;
 +
 
 +
// Float gather/scatter
 +
def : Pat<(int_nuplus_gather_loadf32_scratchpad V16ADDRri:$addr), (GLV32WScratchpad_U V16ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_gather_loadf32_scratchpad_masked V16ADDRri:$addr), (GLV32WScratchpad_M V16ADDRri:$addr)>;
 +
 
 +
def : Pat<(int_nuplus_scatter_storef32_scratchpad V16ADDRri:$addr, v16f32:$srcDest), (SSV32WScratchpad_U v16f32:$srcDest, V16ADDRri:$addr)>;
 +
def : Pat<(int_nuplus_scatter_storef32_scratchpad_masked V16ADDRri:$addr, v16f32:$srcDest), (SSV32WScratchpad_M v16f32:$srcDest, V16ADDRri:$addr)>;
 +
 
 +
//---------------- vector anyextload -> sextload ----------------//
 +
def : Pat<(v16i32 (anyextloadv16i8_mem ADDRri:$addr)), (LV32BMainmem_U ADDRri:$addr)>;
 +
def : Pat<(v16i32 (anyextloadv16i8_scratch ADDRri:$addr)), (LV32BScratchpad_U ADDRri:$addr)>;
 +
def : Pat<(v16i32 (anyextloadv16i16_mem ADDRri:$addr)), (LV32SMainmem_U ADDRri:$addr)>;
 +
def : Pat<(v16i32 (anyextloadv16i16_scratch ADDRri:$addr)), (LV32SScratchpad_U ADDRri:$addr)>;
 +
 
 +
//---------------- vector load/store -> sextload/truncstore ----------------//
 +
def : Pat<(v16i8 (MemLoad ADDRri:$addr)),  (LV32BMainmem_U ADDRri:$addr)>;
 +
def : Pat<(v16i8 (ScratchpadLoad ADDRri:$addr)),  (LV32BScratchpad_U ADDRri:$addr)>;
 +
def : Pat<(v16i16 (MemLoad ADDRri:$addr)), (LV32SMainmem_U ADDRri:$addr)>;
 +
def : Pat<(v16i16 (ScratchpadLoad ADDRri:$addr)), (LV32SScratchpad_U ADDRri:$addr)>;
 +
def : Pat<(v16i32 (ScratchpadLoad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;
 +
 
 +
def : Pat<(MemStore v16i8:$dstsrc, ADDRri:$addr),  (SV32BMainmem_U v16i8:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(MemStore v16i16:$dstsrc, ADDRri:$addr), (SV32SMainmem_U v16i16:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore v16i8:$dstsrc, ADDRri:$addr),  (SV32BScratchpad_U v16i8:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore v16i16:$dstsrc, ADDRri:$addr), (SV32SScratchpad_U v16i16:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore v16i32:$dstsrc, ADDRri:$addr), (SV32WScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
 +
 
 +
def : Pat<(v16f32 (MemLoad ADDRri:$addr)), (LV32WMainmem_U ADDRri:$addr)>;
 +
def : Pat<(v16f32 (ScratchpadLoad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;
 +
 
 +
def : Pat<(MemStore v16f32:$dstsrc, ADDRri:$addr), (SV32WMainmem_U v16f32:$dstsrc, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore v16f32:$dstsrc, ADDRri:$addr), (SV32WScratchpad_U v16f32:$dstsrc, ADDRri:$addr)>;
 +
 
 +
// Questi pattern servono per gestire i tipi di dato vettoriali di dim < 512 bits
 +
// v16i8 <=> v16i32
 +
def : Pat<(v16i32 (bitconvert v16i8:$src)), (v16i32 (SEXT8_32VV_U v16i8:$src))>;
 +
def : Pat<(MemStore (v16i8 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32BMainmem_U v16i32:$src, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore (v16i8 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32BScratchpad_U v16i32:$src, ADDRri:$addr)>;
 +
// v16i16 <=> v16i32
 +
def : Pat<(v16i32 (bitconvert v16i16:$src)), (v16i32 (SEXT16_32VV_U v16i16:$src))>;
 +
def : Pat<(MemStore (v16i16 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32SMainmem_U v16i32:$src, ADDRri:$addr)>;
 +
def : Pat<(ScratchpadStore (v16i16 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32SScratchpad_U v16i32:$src, ADDRri:$addr)>;
 +
 
 +
// v8f32 <=> v16f32
 +
//def : Pat<(MemStore (v8f32 (extract_subvector v16f32:$src, (i32 0))), ADDRri:$addr), (SV32WMainmem_U v16f32:$src, ADDRri:$addr)>;
 +
//def : Pat<(ScratchpadStore (v8f32 (extract_subvector v16f32:$src, (i32 0))), ADDRri:$addr), (SV32WScratchpad_U v16f32:$src, ADDRri:$addr)>;
 +
 
 +
 
 +
 
 +
//---------------- Patterns for type conversions ----------------//
 +
 
 +
 
 +
// Sign Extension Patterns sext_inreg -> sext
 +
def : Pat<(v16i32 (sext_inreg v16i32:$src, v16i8)), (v16i32 (SEXT8_32VV_U v16i32:$src))>;
 +
def : Pat<(v16i32 (sext_inreg v16i32:$src, v16i16)), (v16i32 (SEXT16_32VV_U v16i32:$src))>;
  
 +
// BITCAST patterns
 +
def : Pat<(f32 (bitconvert (i32 GPR32:$src))), (f32 GPR32:$src)>;
 +
def : Pat<(i32 (bitconvert (f32 GPR32:$src))), (i32 GPR32:$src)>;
 +
def : Pat<(v16f32 (bitconvert (v16i32 VR512W:$src))), (v16f32 VR512W:$src)>;
 +
def : Pat<(v16i32 (bitconvert (v16f32 VR512W:$src))), (v16i32 VR512W:$src)>;
  
−
In the nu+ back-end the majority of pseudo-instructions have also the flag '''usesCustomInserter''' setted to 1. In this way LLVM expects that there is a custom function that performs the lowering of that [https://llvm.org/docs/CodeGenerator.html#machineinstr Machineinstruction] in a [https://llvm.org/docs/CodeGenerator.html#mcinst MCInst].
+
// CLZ and CTZ Intrinsics
 +
def : Pat<(i32 (int_nuplus_clzi32 i32:$src)),
 +
(i32 (CLZSS_32 i32:$src))>;
 +
def : Pat<(v16i32 (int_nuplus_clzv16i32 v16i32:$src)),
 +
(v16i32 (CLZVV_U_32 v16i32:$src))>;
  
−
As an example, to load a 32-bit integer immediate, the nu+ back-end uses a custom inserter function defined in [[NuPlusTargetLowering]]. However to do so, we must first define a pseudo-instruction with '''usesCustomInserter''' = 1. In this case the instruction is called '''LoadI32'''.
+
def : Pat<(i32 (int_nuplus_ctzi32 i32:$src)),
 +
(i32 (CTZSS_32 i32:$src))>;
  
 +
def : Pat<(v16i32 (int_nuplus_ctzv16i32 v16i32:$src)),
 +
(v16i32 (CTZVV_U_32 v16i32:$src))>;
  
−
<syntaxhighlight lang="c" line='line'>
+
// Integer division
 +
// v16i32
 +
def : Pat<(v16i32 (sdiv v16i32:$src1, v16i32:$src2)),
 +
    (F32TOI32_VV_U (DIVFVVV_U_32 (I32TOF32_VV_U v16i32:$src1), (I32TOF32_VV_U v16i32:$src2)))>;
  
−
let usesCustomInserter = 1 in {
+
// Branch patterns
−
def LoadI32 : Pseudo<
+
def : Pat<(brcond (i32 (setne i32:$lhs, 0)), bb:$addr), (BNEZ i32:$lhs, bb:$addr)>;
−
(outs GPR32:$dst),
+
def : Pat<(brcond (i32 (seteq i32:$lhs, 0)), bb:$addr), (BEQZ i32:$lhs, bb:$addr)>;
−
(ins GPR32:$val),
+
def : Pat<(brcond i32:$lhs, bb:$addr), (BNEZ i32:$lhs, bb:$addr)>;
−
[(set i32:$dst, (i32 imm:$val))]>;
 
  
−
...
+
// Call patterns
 +
def : Pat<(call tglobaladdr:$addr), (JMPSR_OFF tglobaladdr:$addr)>;
 +
def : Pat<(call texternalsym:$addr), (JMPSR_OFF texternalsym:$addr)>;
  
−
}
+
// GetLane patterns
−
</syntaxhighlight>
+
def : Pat<(extractelt v16f32:$src0, i32:$src1),
 +
          (GET_LANEI_32 v16f32:$src0, i32:$src1)>;
 +
def : Pat<(extractelt v16f32:$src, simm9:$imm),
 +
          (GET_LANEIimm v16f32:$src, imm:$imm)>;
  
−
With (outs GPR32:$dst), we say that the instruction has one output operand called '''dst''' which is a GPR32RegisterClass register. With
+
// ISD Nodes Patterns
−
(ins GPR32:$val), we say that the instruction has one input operand called '''val''' which is a GPR32RegisterClass register. The pattern [(set i32:$dst, (i32 imm:$val))] states that the immediate input ''val'' must be copied (set) in the output ''val''.
+
def : Pat<(i32 (leah tglobaladdr:$addr)), (LEAH tglobaladdr:$addr)>;
 +
def : Pat<(i32 (leal i32:$addrh, tglobaladdr:$addr)), (LEAL i32:$addrh, tglobaladdr:$addr)>;
 +
def : Pat<(i32 (leah tconstpool:$addr)), (LEAH tconstpool:$addr)>;
 +
def : Pat<(i32 (leal i32:$addrh, tconstpool:$addr)), (LEAL i32:$addrh, tconstpool:$addr)>;
 +
def : Pat<(i32 (leah tblockaddress:$addr)), (LEAH tblockaddress:$addr)>;
 +
def : Pat<(i32 (leal i32:$addrh, tblockaddress:$addr)), (LEAL i32:$addrh, tblockaddress:$addr)>;
 +
def : Pat<(i32 (leah tjumptable:$addr)), (LEAH tjumptable:$addr)>;
 +
def : Pat<(i32 (leal i32:$addrh, tjumptable:$addr)), (LEAL i32:$addrh, tjumptable:$addr)>;
 +
</syntaxhighlight>

Revision as of 14:33, 5 April 2019

NuPlusInstrInfo.td and NuPlusInstrFormats.td describe the nu+ instructions and the patterns to transform LLVM IR into machine code. The NuPlusInstrInfo.td contains the instructions definition and the patterns necessary for the translation from the LLVM IR to the nu+ machine code. 

//===-- NuPlusInstrInfo.td - Target Description for NuPlus Target -----------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file describes the NuPlus instructions in TableGen format.
//
//===----------------------------------------------------------------------===//

//===----------------------------------------------------------------------===//
// Instruction format superclass
//===----------------------------------------------------------------------===//

include "NuPlusInstrFormats.td"

//===----------------------------------------------------------------------===//
// Instruction definition
//===----------------------------------------------------------------------===//

//===----------------------------------------------------------------------===//
// Arithmetic Instructions (Format R & I)
//===----------------------------------------------------------------------===//

//Arithmetic Integer Two operands
defm OR     : FArithInt_TwoOp<"or", or, 1>;
defm AND    : FArithInt_TwoOp<"and", and, 2>;
defm XOR    : FArithInt_TwoOp<"xor", xor, 3>;
defm ADD    : FArithInt_TwoOp<"add", add, 4>;
defm SUB    : FArithInt_TwoOp<"sub", sub, 5>;
defm MULL   : FArithInt_TwoOp<"mull", mul, 6>;
defm MULH   : FArithInt_TwoOp<"mulhs", mulhs, 7>;
defm MULHU  : FArithInt_TwoOp<"mulhu", mulhu, 8>;
defm SRA    : FSRInt_TwoOp<"ashr", sra, 9>;
defm SRL    : FSRInt_TwoOp<"shr", srl, 10>;
defm SLL    : FSRInt_TwoOp<"shl", shl, 11>;
//Arithmetic Integer One operand
defm CLZ    : FArithInt_OneOp<"clz", ctlz, 12>;
defm CTZ    : FArithInt_OneOp<"ctz", cttz, 13>;
//Compare Integer
defm SEQSI : FCompInt<"cmpeq", SETEQ, 14, int_nuplus_mask_cmpi32_eq>;//, int_nuplus_mask_cmpi64_eq>;
defm SNESI : FCompInt<"cmpne", SETNE, 15, int_nuplus_mask_cmpi32_ne>;//, int_nuplus_mask_cmpi64_ne>;
defm SGTSI : FCompInt<"cmpgt", SETGT, 16, int_nuplus_mask_cmpi32_sgt>;//, int_nuplus_mask_cmpi64_sgt>;
defm SGESI : FCompInt<"cmpge", SETGE, 17, int_nuplus_mask_cmpi32_sge>;//, int_nuplus_mask_cmpi64_sge>;
defm SLTSI : FCompInt<"cmplt", SETLT, 18, int_nuplus_mask_cmpi32_slt>;//, int_nuplus_mask_cmpi64_slt>;
defm SLESI : FCompInt<"cmple", SETLE, 19, int_nuplus_mask_cmpi32_sle>;//, int_nuplus_mask_cmpi64_sle>;
//Compare Unsigned
defm SGTUI : FCompInt<"cmpugt", SETUGT, 20, int_nuplus_mask_cmpi32_ugt>;//, int_nuplus_mask_cmpi64_ugt>;
defm SGEUI : FCompInt<"cmpuge", SETUGE, 21, int_nuplus_mask_cmpi32_uge>;//, int_nuplus_mask_cmpi64_uge>;
defm SLTUI : FCompInt<"cmpult", SETULT, 22, int_nuplus_mask_cmpi32_ult>;//, int_nuplus_mask_cmpi64_ult>;
defm SLEUI : FCompInt<"cmpule", SETULE, 23, int_nuplus_mask_cmpi32_ule>;//, int_nuplus_mask_cmpi64_ule>;

//Cross Product Instruction
def CROSSPROD_32 : FR_TwoOp_Unmasked_32 <
  (outs VR512W:$dst),
  (ins VR512W:$src0, VR512W:$src1),
  "crp $dst, $src0, $src1",
  [(set v16i32:$dst, (int_nuplus_crossprodv16i32 v16i32:$src0, v16i32:$src1))],
  63,
  Fmt_V,
  Fmt_V,
  Fmt_V>;

//Shuffle
def SHUFFLEI_32 : FR_TwoOp_Unmasked_32<
  (outs VR512W:$dst),
  (ins VR512W:$src0, VR512W:$src1),
  "shuffle_i32 $dst, $src0, $src1",
  [(set v16i32:$dst, (int_nuplus_shufflei32 v16i32:$src0, v16i32:$src1))],
  24,
  Fmt_V,
  Fmt_V,
  Fmt_V>;

//Get lane
def GET_LANEI_32 : FR_TwoOp_Unmasked_32<
  (outs GPR32:$dst),
  (ins VR512W:$src0, GPR32:$src1),
  "getlane_i32 $dst, $src0, $src1",
  [(set i32:$dst, (extractelt v16i32:$src0, i32:$src1))],
  25,
  Fmt_S,
  Fmt_V,
  Fmt_S>;

def GET_LANEIimm : FI_OneOp_Unmasked<
  (outs GPR32:$dst),
  (ins VR512W:$src, SIMM9OP:$imm),
  "getlanei $dst, $src, $imm",
  [(set i32:$dst, (extractelt v16i32:$src, simm9:$imm))],
  25,
  Fmt_S,
  Fmt_V>;

//Move register - register
def MOVE_SS_32 : FR_OneOp_Unmasked_32<
  (outs GPR32:$dst),
  (ins GPR32:$src0),
  "move_i32 $dst, $src0",
  [],
  32,
  Fmt_S,
  Fmt_S>;

def MOVE_VS_32 : FR_OneOp_Unmasked_32<
  (outs VR512W:$dst),
  (ins GPR32:$src0),
  "move_i32 $dst, $src0",
  [(set v16i32:$dst, (splat i32:$src0))],
  32,
  Fmt_V,
  Fmt_S>;

def MOVE_VV_32 : FR_OneOp_Unmasked_32<
  (outs VR512W:$dst),
  (ins VR512W:$src0),
  "move_i32 $dst, $src0",
  [],
  32,
  Fmt_V,
  Fmt_V>;

let Constraints = "$dst = $oldvalue", isAsmParserOnly=1 in {

  def MOVE_VS_M_32 : FR_OneOp_Unmasked_32<
    (outs VR512W:$dst),
    (ins GPR32:$src0, VR512W:$oldvalue),
    "move_i32 $dst, $src0",
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 (splat i32:$src0), v16i32:$oldvalue))],
    32,
    Fmt_V,
    Fmt_S>;

  def MOVE_VV_M_32 : FR_OneOp_Unmasked_32<
    (outs VR512W:$dst),
    (ins VR512W:$src0, VR512W:$oldvalue),
    "move_i32 $dst, $src0",
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 v16i32:$src0, v16i32:$oldvalue))],
    32,
    Fmt_V,
    Fmt_V>;

}

//Arithmetic Float Two operands
defm ADDF   : FArithFloat_TwoOp<"fadd", fadd, 33>;
defm SUBF   : FArithFloat_TwoOp<"fsub", fsub, 34>;
defm MULF   : FArithFloat_TwoOp<"fmul", fmul, 35>;
defm DIVF   : FArithFloat_TwoOp<"fdiv", fdiv, 36>;
//Compare Float
def FloatCompareType: SDTypeProfile<1, 2, [
  SDTCisInt<0>, SDTCisFP<1>, SDTCisSameAs<1, 2>
]>;
def FGT: SDNode<"NuPlusISD::FGT", FloatCompareType>;
def FGE: SDNode<"NuPlusISD::FGE", FloatCompareType>;
def FLT: SDNode<"NuPlusISD::FLT", FloatCompareType>;
def FLE: SDNode<"NuPlusISD::FLE", FloatCompareType>;
def FEQ: SDNode<"NuPlusISD::FEQ", FloatCompareType>;
def FNE: SDNode<"NuPlusISD::FNE", FloatCompareType>;

defm SEQFO : FCompFloat<"cmpfeq", FEQ, 37, int_nuplus_mask_cmpf32_eq>;//, int_nuplus_mask_cmpf64_eq>;
defm SNEFO : FCompFloat<"cmpfne", FNE, 38, int_nuplus_mask_cmpf32_ne>;//, int_nuplus_mask_cmpf64_ne>;
defm SGTFO : FCompFloat<"cmpfgt", FGT, 39, int_nuplus_mask_cmpf32_gt>;//, int_nuplus_mask_cmpf64_gt>;
defm SGEFO : FCompFloat<"cmpfge", FGE, 40, int_nuplus_mask_cmpf32_ge>;//, int_nuplus_mask_cmpf64_ge>;
defm SLTFO : FCompFloat<"cmpflt", FLT, 41, int_nuplus_mask_cmpf32_lt>;//, int_nuplus_mask_cmpf64_lt>;
defm SLEFO : FCompFloat<"cmpfle", FLE, 42, int_nuplus_mask_cmpf32_le>;//, int_nuplus_mask_cmpf64_le>;

//sign extension
defm SEXT8_32 : FSext_32<"sext8", i8, 43, v16i8>;
defm SEXT16_32 : FSext_32<"sext16", i16, 44, v16i16>;

//Integer to Float conversion
def I32TOF32_SS : FR_OneOp_Unmasked_32<
  (outs GPR32:$dst),
  (ins GPR32:$src0),
  "itof_i32 $dst, $src0",
  [(set f32:$dst, (sint_to_fp i32:$src0))],
  48,
  Fmt_S,
  Fmt_S>;

def I32TOF32_VV_U : FR_OneOp_Unmasked_32<
  (outs VR512W:$dst),
  (ins VR512W:$src0),
  "itof_i32 $dst, $src0",
  [(set v16f32:$dst, (sint_to_fp v16i32:$src0))],
  48,
  Fmt_V,
  Fmt_V>;

let Constraints = "$dst = $oldvalue" in {
  def I32TOF32_VV_M : FR_OneOp_Masked_32<
    (outs VR512W:$dst),
    (ins VR512W:$src0, VR512W:$oldvalue),
    "itof_i32.m $dst, $src0",
    [(set v16f32:$dst, (int_nuplus_vector_mixf32 (sint_to_fp v16i32:$src0), v16f32:$oldvalue))],
    48,
    Fmt_V,
    Fmt_V>;

}

//Float to Integer conversion
def F32TOI32_SS : FR_OneOp_Unmasked_32<
  (outs GPR32:$dst),
  (ins GPR32:$src0),
  "ftoi_i32 $dst, $src0",
  [(set i32:$dst, (fp_to_sint f32:$src0))],
  49,
  Fmt_S,
  Fmt_S>;

def F32TOI32_VV_U : FR_OneOp_Unmasked_32<
  (outs VR512W:$dst),
  (ins VR512W:$src0),
  "ftoi_i32 $dst, $src0",
  [(set v16i32:$dst, (fp_to_sint v16f32:$src0))],
  49,
  Fmt_V,
  Fmt_V>;

let Constraints = "$dst = $oldvalue" in {
  def F32TOI32_VV_M : FR_OneOp_Masked_32<
    (outs VR512W:$dst),
    (ins VR512W:$src0, VR512W:$oldvalue),
    "ftoi_i32.m $dst, $src0",
    [(set v16i32:$dst, (int_nuplus_vector_mixi32 (fp_to_sint v16f32:$src0), v16i32:$oldvalue))],
    49,
    Fmt_V,
    Fmt_V>;

}

//===----------------------------------------------------------------------===//
// MOVEI Instructions (Format MOVEI)
//===----------------------------------------------------------------------===//

defm MOVEIL : FMOVEI_ALL<"moveil", 0>;
defm MOVEIH : FMOVEI_ALL<"moveih", 1>;
defm MOVEI : FMOVEI_ALL<"movei", 2>;


//===----------------------------------------------------------------------===//
// LOAD/STORE SPECIAL REGISTERS
//===----------------------------------------------------------------------===//

def READMR  : READ_SPR<MaskReg, "read_mr", int_nuplus_read_mask_reg>;
def WRITEMR : WRITE_SPR<MaskReg, "write_mr", int_nuplus_write_mask_reg>;

//Create Mask Instruction
def CREATEMASK_32 : FR_OneOp_Unmasked_32 <
  (outs GPR32:$dst),
  (ins VR512W:$src0),
  "crt_mask_i32 $dst, $src0",
  [(set i32:$dst, (int_nuplus_createmaskv16i32 v16i32:$src0))],
  50,
  Fmt_S,
  Fmt_V>;

//===----------------------------------------------------------------------===//
// MEM Instructions (Format M)
//===----------------------------------------------------------------------===//

// Scalar load to 32-bit registers
defm L32BS : FMLoadScalar_32<"_s8", sextloadi8_mem, sextloadi8_scratch, 0>;
defm L32SS : FMLoadScalar_32<"_s16", sextloadi16_mem, sextloadi16_scratch, 1>;
defm L32W  : FMLoadScalar_32<"", MemLoad, ScratchpadLoad, 2>;
defm L32BU : FMLoadScalar_32<"_u8", zextloadi8_mem, zextloadi8_scratch, 4>;
defm L32SU : FMLoadScalar_32<"_u16", zextloadi16_mem, zextloadi16_scratch, 5>;
defm S32B : FMStoreScalar_32<"_8", truncstorei8_mem, truncstorei8_scratch, 32>;
defm S32S : FMStoreScalar_32<"_16", truncstorei16_mem, truncstorei16_scratch, 33>;
defm S32W : FMStoreScalar_32<"", MemStore, ScratchpadStore, 34>;
//--------------------------------------------------------------------------------//
//Vector load block 
//--------------------------------------------------------------------------------//

// Vector load to 32-bit registers
defm LV32B : FMLoadVector_32<"_v16i8", sextloadv16i8_mem, sextloadv16i8_scratch, 
                              int_nuplus_block_loadv16i8_masked, int_nuplus_block_loadv16i8_scratchpad_masked, 
                              7>;
defm LV32S : FMLoadVector_32<"_v16i16", sextloadv16i16_mem, sextloadv16i16_scratch, 
                              int_nuplus_block_loadv16i16_masked, int_nuplus_block_loadv16i16_scratchpad_masked, 
                              8>;
defm LV32W : FMLoadVector_32<"_v16i32", MemLoad, ScratchpadLoad, 
                              int_nuplus_block_loadv16i32_masked, int_nuplus_block_loadv16i32_scratchpad_masked, 
                              9>;

defm LV32BU : FMLoadVector_32<"_v16u8", zextloadv16i8_mem, zextloadv16i8_scratch, 
                              int_nuplus_block_loadv16u8_masked, int_nuplus_block_loadv16u8_scratchpad_masked, 
                              11>;
defm LV32SU : FMLoadVector_32<"_v16u16", zextloadv16i16_mem, zextloadv16i16_scratch, 
                              int_nuplus_block_loadv16u16_masked, int_nuplus_block_loadv16u16_scratchpad_masked, 
                              12>;
//--------------------------------------------------------------------------------//
//Vector load gather 
//--------------------------------------------------------------------------------//

// Vector gather to 32-bit registers
defm GLV32W : FMGather_32<"32", int_nuplus_gather_loadi32_scratchpad,
                          int_nuplus_gather_loadi32_scratchpad_masked,
                          16>;

//--------------------------------------------------------------------------------//
//Vector store block 
//--------------------------------------------------------------------------------//

// Vector store from 32-bit registers
defm SV32B : FMStoreVector_32<"_v16i8", truncstorev16i8_mem, truncstorev16i8_scratch, 
                              int_nuplus_block_storev16i8_masked, int_nuplus_block_storev16i8_scratchpad_masked, 
                              36>;
defm SV32S : FMStoreVector_32<"_v16i16", truncstorev16i16_mem, truncstorev16i16_scratch, 
                              int_nuplus_block_storev16i16_masked, int_nuplus_block_storev16i16_scratchpad_masked, 
                              37>;
defm SV32W : FMStoreVector_32<"_v16i32", MemStore, ScratchpadStore, 
                              int_nuplus_block_storev16i32_masked, int_nuplus_block_storev16i32_scratchpad_masked, 
                              38>;

//--------------------------------------------------------------------------------//
//Vector store scatter 
//--------------------------------------------------------------------------------//

// Vector scatter from 32-bit registers
defm SSV32W : FMScatter_32<"32",int_nuplus_scatter_storei32_scratchpad, 
                              int_nuplus_scatter_storei32_scratchpad_masked, 
                              42>;

//===----------------------------------------------------------------------===//
// Jump and Branch Instructions (Format J/JR)
//===----------------------------------------------------------------------===//

let isTerminator = 1 in {
  //Unconditional jump with offset, PC:=PC+addr
  def JMP : FJ<
    (outs),
    (ins brtarget:$addr),
    "jmp $addr",
    [(br bb:$addr)],
    0>
  {
    let isBarrier = 1;
  }
  
  //Unconditional jump with register PC:=DST
  def JUMPREG : FJR<
  (outs),
  (ins GPR32:$cond),
  "jmp $cond",
  [(brind i32:$cond)],
  0>
  {
    let isBranch = 1;
    let isIndirectBranch = 1;
    let isBarrier = 1;
  }

  // Return PC:=RA
  def JRET : FJR<
  (outs),
  (ins),
  "jret",
  [(return)],
  3>
  {
    let Inst{23-18} = 0;
    let Inst{17-0} = 0;

    let isReturn = 1;
    let isTerminator = 1;
    let isBarrier = 1;
  }

  //Conditional Branch
  def BEQZ : FJR<
    (outs),
    (ins GPR32:$cond, brtarget:$addr),
    "beqz $cond, $addr",
    [],
    5>;

  //Conditional Branch
  def BNEZ : FJR<
    (outs),
    (ins GPR32:$cond, brtarget:$addr),
    "bnez $cond, $addr",
    [],
    6>;
}

let isCall = 1, Defs = [ RA_REG ] in {
  //Jump with offset and save return address RA:=PC+4, PC:=PC+addr
  def JMPSR_OFF : FJ<
    (outs),
    (ins calltarget:$addr, variable_ops),
    "jmpsr $addr",
    [],
    1>;

  //Jump with register and save return address RA:=PC+4, PC:=DST
  def JMPSR_REG : FJR<
    (outs),
    (ins GPR32:$dst, variable_ops),
    "jmpsr $dst",
    [(call i32:$dst)],
    1>
  {
    bits<6> dst;

    let Inst{23-18} = dst;
  }
}
 
//===----------------------------------------------------------------------===//
// Control Instructions (Format C)
//===----------------------------------------------------------------------===//

def BARRIER : FC<
  (outs),
  (ins GPR32:$src0, GPR32:$src1),
  "barrier $src0, $src1",
  [(int_nuplus_barrier i32:$src0, i32:$src1)],
  0>;
  
def FLUSH : FC<
  (outs),
  (ins GPR32:$src0),
  "flush $src0",
  [(int_nuplus_flush i32:$src0)],
  2>{
    let Inst{17-12} = 0;
  }

// READ Control Register
def READCR : FC<
  (outs GPR32:$src0),
  (ins GPR32:$src1),
  "read_cr $src0, $src1",
  [(set i32:$src0, (int_nuplus_read_control_reg i32:$src1))],
  3>;

// WRITE Control Register
def WRITECR : FC<
  (outs),
  (ins GPR32:$src0, GPR32:$src1),
  "write_cr $src0, $src1",
  [(int_nuplus_write_control_reg i32:$src0, i32:$src1)],
  4>;


//===----------------------------------------------------------------------===//
// Miscellaneous Instructions
//===----------------------------------------------------------------------===//

def NOP : InstNuPlus<
  (outs),
  (ins),
  "nop",
  []>
{
  let Inst{31-0} = 0xffffffff;
}

def LOAD_EFFECTIVE_ADDR : InstNuPlus<
  (outs GPR32:$dst),
  (ins LEAri:$addr),
  "_lea $dst, $addr",
  [(set i32:$dst, ADDRri:$addr)]> {

  let isAsmParserOnly = 1;   // Don't disassemble

  bits<16> addr;
  bits<6> dst;

  let Inst{31-29} = 0b010;
  let Inst{28-24} = 4;
  let Inst{23-18} = dst;
  let Inst{17-2} = addr;
  let Inst{1} = 0;
  let Inst{0} = 0;

}

//TODO: (Catello) Add symbol in NuPlusAsmParser::ProcessInstruction.
// This node defines the lea pseudo-instruction that can be used in
// assembly files.
def LOAD_EFFECTIVE_ADDR_SYM : InstNuPlus<
  (outs GPR32:$dst),
  (ins symref:$label),
  "lea $dst, $label",
  []> {

  let isPseudo = 1;

}

def LEAH : InstNuPlus<
  (outs GPR32:$dst),
  (ins ABSh:$addr),
  "leah $dst, $addr",
  []> {
  let isAsmParserOnly = 1;   // Don't disassemble

  bits<16> addr;
  bits<6> dst;

  let Inst{31-27} = 0b01100; // Format MOVEI
  let Inst{26-24} = 1; //Opcode MOVEI
  let Inst{23-18} = dst;
  let Inst{17-2} = addr;
  let Inst{1} = 0;
  let Inst{0} = 0;
}


def LEAL : InstNuPlus<
  (outs GPR32:$dst),
  (ins GPR32:$addrh, ABSl:$addr),
  "leal $dst, $addr",
  []> {
  let isAsmParserOnly = 1;   // Don't disassemble
  
  //costraint used to let llvm use the same destination register as leah
  let Constraints = "$dst = $addrh"; 

  bits<16> addr;
  bits<6> dst;

  let Inst{31-27} = 0b01100; // Format MOVEI
  let Inst{26-24} = 0; //Opcode MOVEI
  let Inst{23-18} = dst;
  let Inst{17-2} = addr;
  let Inst{1} = 0;
  let Inst{0} = 0;
}



//===----------------------------------------------------------------------===//
// Pseudo instructions
//===----------------------------------------------------------------------===//

// These pseudo ops capture outgoing argument space on the stack and will be removed
// by later passes.
let Defs = [ SP_REG ], Uses = [ SP_REG ], hasSideEffects = 1 in {
   def ADJCALLSTACKDOWN : Pseudo<
     (outs),
     (ins i32imm:$amt1, i32imm:$amt2),
     [(callseq_start timm:$amt1, timm:$amt2)]>;
 
   def ADJCALLSTACKUP : Pseudo<
     (outs),
     (ins i32imm:$amt1, i32imm:$amt2),
     [(callseq_end timm:$amt1, timm:$amt2)]>;
 }

// SELECT pseudo instructions. This architecture doesn't actually have a scalar
// conditional move instruction. These will be replaced in a later pass
// with a diamond pattern of conditional branches.
//
let usesCustomInserter = 1 in {
  def SELECTI : Pseudo<
    (outs GPR32:$dst),
    (ins GPR32:$pred, GPR32:$true, GPR32:$false),
    [(set i32:$dst, (selcondresult i32:$pred, i32:$true, i32:$false))]>;

  def SELECTF : Pseudo<
    (outs GPR32:$dst),
    (ins GPR32:$pred, GPR32:$true, GPR32:$false),
    [(set f32:$dst, (selcondresult i32:$pred, f32:$true, f32:$false))]>;

  def SELECTVI : Pseudo<
    (outs VR512W:$dst),
    (ins GPR32:$pred, VR512W:$true, VR512W:$false),
    [(set v16i32:$dst, (selcondresult i32:$pred, v16i32:$true, v16i32:$false))]>;

  def SELECTVF : Pseudo<
    (outs VR512W:$dst),
    (ins GPR32:$pred, VR512W:$true, VR512W:$false),
    [(set v16f32:$dst, (selcondresult i32:$pred, v16f32:$true, v16f32:$false))]>;
}

let usesCustomInserter = 1 in {
  def LoadI32 : Pseudo<
    (outs GPR32:$dst),
    (ins GPR32:$val),
    [(set i32:$dst, (i32 imm:$val))]>;

  def LoadF32 : Pseudo<
    (outs GPR32:$dst),
    (ins GPR32:$val),
    [(set f32:$dst, (f32 fpimm:$val))]>;

}

let usesCustomInserter = 1 in {
  def InsertELT32 : Pseudo<
    (outs VR512W:$dst),
    (ins VR512W:$vec, GPR32:$elem, GPR32:$pos),
    [(set v16i32:$dst, (insert_elt v16i32:$vec, i32:$elem, i32:$pos))]>;

}

def : Pat <(v16f32 (insert_elt v16f32:$vec, f32:$elem, i32:$pos)), (v16f32 (InsertELT32 v16f32:$vec, f32:$elem, i32:$pos))>;

// Atomics
let usesCustomInserter = 1 in {
 defm ATOMIC_LOAD_ADD : AtomicBinary<atomic_load_add>;
 defm ATOMIC_LOAD_SUB : AtomicBinary<atomic_load_sub>;
 defm ATOMIC_LOAD_AND : AtomicBinary<atomic_load_and>;
 defm ATOMIC_LOAD_OR  : AtomicBinary<atomic_load_or>;
 defm ATOMIC_LOAD_XOR : AtomicBinary<atomic_load_xor>;
 defm ATOMIC_LOAD_NAND : AtomicBinary<atomic_load_nand>;

def ATOMIC_CMP_SWAP : Pseudo<
   (outs GPR32:$dst),
   (ins GPR32:$ptr, GPR32:$cmp, GPR32:$swap),
   [(set i32:$dst, (atomic_cmp_swap GPR32:$ptr, GPR32:$cmp, GPR32:$swap))]>;

 def ATOMIC_SWAP : Pseudo<
   (outs GPR32:$dst),
  (ins GPR32:$ptr, GPR32:$swap),
   [(set i32:$dst, (atomic_swap GPR32:$ptr, GPR32:$swap))]>;
}

//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
//===----------------------------------------------------------------------===//

// Shuffle patterns
def : Pat<(int_nuplus_shufflef32 v16f32:$src0, v16i32:$src1),
  (SHUFFLEI_32 v16f32:$src0, v16i32:$src1)>;

// Splat patterns

def : Pat<(v16i32 (splat i32:$src0)), (MOVE_VS_32 i32:$src0)>;
def : Pat<(v16f32 (splat f32:$src0)), (MOVE_VS_32 f32:$src0)>;

def : Pat<(int_nuplus_vector_mixf32 v16f32:$src0, v16f32:$oldvalue),
          (MOVE_VV_M_32 v16f32:$src0, v16f32:$oldvalue)>;

//---------------- Patterns for load and store ----------------//
//---------------- scalar load and store ----------------//
// zextload bool -> zextload byte
def : Pat<(i32 (zextloadi1_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
def : Pat<(i32 (zextloadi1_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;

//---------------- scalar extload->zextload ----------------//
// Scalar load to 32-bit registers 
def : Pat<(i32 (extloadi1_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
def : Pat<(i32 (extloadi8_mem ADDRri:$addr)), (L32BU_Mainmem ADDRri:$addr)>;
def : Pat<(i32 (extloadi16_mem ADDRri:$addr)), (L32SU_Mainmem ADDRri:$addr)>;
def : Pat<(f32 (MemLoad ADDRri:$addr)), (L32W_Mainmem ADDRri:$addr)>;
def : Pat<(i32 (extloadi1_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
def : Pat<(i32 (extloadi8_scratch ADDRri:$addr)), (L32BU_Scratchpad ADDRri:$addr)>;
def : Pat<(i32 (extloadi16_scratch ADDRri:$addr)), (L32SU_Scratchpad ADDRri:$addr)>;
def : Pat<(f32 (ScratchpadLoad ADDRri:$addr)), (L32W_Scratchpad ADDRri:$addr)>;

//---------------- scalar f32 load-> i32 load ----------------//
// Scalar store to 32-bit registers 
def : Pat<(MemStore f32:$dstsrc, ADDRri:$addr), (S32W_Mainmem f32:$dstsrc, ADDRri:$addr)>;
def : Pat<(ScratchpadStore f32:$dstsrc, ADDRri:$addr), (S32W_Scratchpad f32:$dstsrc, ADDRri:$addr)>;

//---------------- vector load and store ----------------//
//---------------- intrinsics load and store ----------------//
//integer
def : Pat<(v16i32 (int_nuplus_block_loadv16i8 ADDRri:$addr)), (v16i32 (LV32BMainmem_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16i8_scratchpad ADDRri:$addr)), (v16i32 (LV32BScratchpad_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16u8 ADDRri:$addr)), (v16i32 (LV32BUMainmem_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16u8_scratchpad ADDRri:$addr)), (v16i32 (LV32BUScratchpad_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16i16 ADDRri:$addr)), (v16i32 (LV32SMainmem_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16i16_scratchpad ADDRri:$addr)), (v16i32 (LV32SScratchpad_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16u16 ADDRri:$addr)), (v16i32 (LV32SUMainmem_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16u16_scratchpad ADDRri:$addr)), (v16i32 (LV32SUScratchpad_U ADDRri:$addr))>;
def : Pat<(v16i32 (int_nuplus_block_loadv16i32_scratchpad ADDRri:$addr)), (v16i32 (LV32WScratchpad_U ADDRri:$addr))>;

def : Pat<(int_nuplus_block_storev16i8 ADDRri:$addr, v16i32:$dstsrc), (SV32BMainmem_U v16i32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16i8_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32BScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16i16 ADDRri:$addr, v16i32:$dstsrc), (SV32SMainmem_U v16i32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16i16_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32SScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16i32_scratchpad ADDRri:$addr, v16i32:$dstsrc), (SV32WScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;

//float
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_scratchpad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_masked ADDRri:$addr)), (LV32WMainmem_M ADDRri:$addr)>;
def : Pat<(v16f32 (int_nuplus_block_loadv16f32_scratchpad_masked ADDRri:$addr)), (LV32WScratchpad_M ADDRri:$addr)>;

def : Pat<(int_nuplus_block_storev16f32_scratchpad ADDRri:$addr, v16f32:$dstsrc), (SV32WScratchpad_U v16f32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16f32_masked ADDRri:$addr, v16f32:$dstsrc), (SV32WMainmem_M v16f32:$dstsrc, ADDRri:$addr)>;
def : Pat<(int_nuplus_block_storev16f32_scratchpad_masked ADDRri:$addr, v16f32:$dstsrc), (SV32WScratchpad_M v16f32:$dstsrc, ADDRri:$addr)>;

// Float gather/scatter
def : Pat<(int_nuplus_gather_loadf32_scratchpad V16ADDRri:$addr), (GLV32WScratchpad_U V16ADDRri:$addr)>;
def : Pat<(int_nuplus_gather_loadf32_scratchpad_masked V16ADDRri:$addr), (GLV32WScratchpad_M V16ADDRri:$addr)>;

def : Pat<(int_nuplus_scatter_storef32_scratchpad V16ADDRri:$addr, v16f32:$srcDest), (SSV32WScratchpad_U v16f32:$srcDest, V16ADDRri:$addr)>;
def : Pat<(int_nuplus_scatter_storef32_scratchpad_masked V16ADDRri:$addr, v16f32:$srcDest), (SSV32WScratchpad_M v16f32:$srcDest, V16ADDRri:$addr)>;

//---------------- vector anyextload -> sextload ----------------//
def : Pat<(v16i32 (anyextloadv16i8_mem ADDRri:$addr)), (LV32BMainmem_U ADDRri:$addr)>;
def : Pat<(v16i32 (anyextloadv16i8_scratch ADDRri:$addr)), (LV32BScratchpad_U ADDRri:$addr)>;
def : Pat<(v16i32 (anyextloadv16i16_mem ADDRri:$addr)), (LV32SMainmem_U ADDRri:$addr)>;
def : Pat<(v16i32 (anyextloadv16i16_scratch ADDRri:$addr)), (LV32SScratchpad_U ADDRri:$addr)>;

//---------------- vector load/store -> sextload/truncstore ----------------//
def : Pat<(v16i8 (MemLoad ADDRri:$addr)),  (LV32BMainmem_U ADDRri:$addr)>;
def : Pat<(v16i8 (ScratchpadLoad ADDRri:$addr)),  (LV32BScratchpad_U ADDRri:$addr)>;
def : Pat<(v16i16 (MemLoad ADDRri:$addr)), (LV32SMainmem_U ADDRri:$addr)>;
def : Pat<(v16i16 (ScratchpadLoad ADDRri:$addr)), (LV32SScratchpad_U ADDRri:$addr)>;
def : Pat<(v16i32 (ScratchpadLoad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;

def : Pat<(MemStore v16i8:$dstsrc, ADDRri:$addr),  (SV32BMainmem_U v16i8:$dstsrc, ADDRri:$addr)>;
def : Pat<(MemStore v16i16:$dstsrc, ADDRri:$addr), (SV32SMainmem_U v16i16:$dstsrc, ADDRri:$addr)>;
def : Pat<(ScratchpadStore v16i8:$dstsrc, ADDRri:$addr),  (SV32BScratchpad_U v16i8:$dstsrc, ADDRri:$addr)>;
def : Pat<(ScratchpadStore v16i16:$dstsrc, ADDRri:$addr), (SV32SScratchpad_U v16i16:$dstsrc, ADDRri:$addr)>;
def : Pat<(ScratchpadStore v16i32:$dstsrc, ADDRri:$addr), (SV32WScratchpad_U v16i32:$dstsrc, ADDRri:$addr)>;

def : Pat<(v16f32 (MemLoad ADDRri:$addr)), (LV32WMainmem_U ADDRri:$addr)>;
def : Pat<(v16f32 (ScratchpadLoad ADDRri:$addr)), (LV32WScratchpad_U ADDRri:$addr)>;

def : Pat<(MemStore v16f32:$dstsrc, ADDRri:$addr), (SV32WMainmem_U v16f32:$dstsrc, ADDRri:$addr)>;
def : Pat<(ScratchpadStore v16f32:$dstsrc, ADDRri:$addr), (SV32WScratchpad_U v16f32:$dstsrc, ADDRri:$addr)>;

// Questi pattern servono per gestire i tipi di dato vettoriali di dim < 512 bits
// v16i8 <=> v16i32
def : Pat<(v16i32 (bitconvert v16i8:$src)), (v16i32 (SEXT8_32VV_U v16i8:$src))>;
def : Pat<(MemStore (v16i8 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32BMainmem_U v16i32:$src, ADDRri:$addr)>;
def : Pat<(ScratchpadStore (v16i8 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32BScratchpad_U v16i32:$src, ADDRri:$addr)>;
// v16i16 <=> v16i32
def : Pat<(v16i32 (bitconvert v16i16:$src)), (v16i32 (SEXT16_32VV_U v16i16:$src))>;
def : Pat<(MemStore (v16i16 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32SMainmem_U v16i32:$src, ADDRri:$addr)>;
def : Pat<(ScratchpadStore (v16i16 (bitconvert v16i32:$src)), ADDRri:$addr), (SV32SScratchpad_U v16i32:$src, ADDRri:$addr)>;

// v8f32 <=> v16f32
//def : Pat<(MemStore (v8f32 (extract_subvector v16f32:$src, (i32 0))), ADDRri:$addr), (SV32WMainmem_U v16f32:$src, ADDRri:$addr)>;
//def : Pat<(ScratchpadStore (v8f32 (extract_subvector v16f32:$src, (i32 0))), ADDRri:$addr), (SV32WScratchpad_U v16f32:$src, ADDRri:$addr)>;



//---------------- Patterns for type conversions ----------------//


// Sign Extension Patterns sext_inreg -> sext
def : Pat<(v16i32 (sext_inreg v16i32:$src, v16i8)), (v16i32 (SEXT8_32VV_U v16i32:$src))>;
def : Pat<(v16i32 (sext_inreg v16i32:$src, v16i16)), (v16i32 (SEXT16_32VV_U v16i32:$src))>;

// BITCAST patterns
def : Pat<(f32 (bitconvert (i32 GPR32:$src))), (f32 GPR32:$src)>;
def : Pat<(i32 (bitconvert (f32 GPR32:$src))), (i32 GPR32:$src)>;
def : Pat<(v16f32 (bitconvert (v16i32 VR512W:$src))), (v16f32 VR512W:$src)>;
def : Pat<(v16i32 (bitconvert (v16f32 VR512W:$src))), (v16i32 VR512W:$src)>;

// CLZ and CTZ Intrinsics
def : Pat<(i32 (int_nuplus_clzi32 i32:$src)),
(i32 (CLZSS_32 i32:$src))>;
def : Pat<(v16i32 (int_nuplus_clzv16i32 v16i32:$src)),
(v16i32 (CLZVV_U_32 v16i32:$src))>;

def : Pat<(i32 (int_nuplus_ctzi32 i32:$src)),
(i32 (CTZSS_32 i32:$src))>;

def : Pat<(v16i32 (int_nuplus_ctzv16i32 v16i32:$src)),
(v16i32 (CTZVV_U_32 v16i32:$src))>;

// Integer division
// v16i32
def : Pat<(v16i32 (sdiv v16i32:$src1, v16i32:$src2)),
    (F32TOI32_VV_U (DIVFVVV_U_32 (I32TOF32_VV_U v16i32:$src1), (I32TOF32_VV_U v16i32:$src2)))>;

// Branch patterns
def : Pat<(brcond (i32 (setne i32:$lhs, 0)), bb:$addr), (BNEZ i32:$lhs, bb:$addr)>;
def : Pat<(brcond (i32 (seteq i32:$lhs, 0)), bb:$addr), (BEQZ i32:$lhs, bb:$addr)>;
def : Pat<(brcond i32:$lhs, bb:$addr), (BNEZ i32:$lhs, bb:$addr)>;

// Call patterns
def : Pat<(call tglobaladdr:$addr), (JMPSR_OFF tglobaladdr:$addr)>;
def : Pat<(call texternalsym:$addr), (JMPSR_OFF texternalsym:$addr)>;

// GetLane patterns
def : Pat<(extractelt v16f32:$src0, i32:$src1),
          (GET_LANEI_32 v16f32:$src0, i32:$src1)>;
def : Pat<(extractelt v16f32:$src, simm9:$imm),
          (GET_LANEIimm v16f32:$src, imm:$imm)>;

// ISD Nodes Patterns
def : Pat<(i32 (leah tglobaladdr:$addr)), (LEAH tglobaladdr:$addr)>;
def : Pat<(i32 (leal i32:$addrh, tglobaladdr:$addr)), (LEAL i32:$addrh, tglobaladdr:$addr)>;
def : Pat<(i32 (leah tconstpool:$addr)), (LEAH tconstpool:$addr)>;
def : Pat<(i32 (leal i32:$addrh, tconstpool:$addr)), (LEAL i32:$addrh, tconstpool:$addr)>;
def : Pat<(i32 (leah tblockaddress:$addr)), (LEAH tblockaddress:$addr)>;
def : Pat<(i32 (leal i32:$addrh, tblockaddress:$addr)), (LEAL i32:$addrh, tblockaddress:$addr)>;
def : Pat<(i32 (leah tjumptable:$addr)), (LEAH tjumptable:$addr)>;
def : Pat<(i32 (leal i32:$addrh, tjumptable:$addr)), (LEAL i32:$addrh, tjumptable:$addr)>;
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