llvm/lib/Target/WebAssembly/WebAssemblyInstrSIMD.td

// WebAssemblyInstrSIMD.td - WebAssembly SIMD codegen support -*- tablegen -*-//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// WebAssembly SIMD operand code-gen constructs.
///
//===----------------------------------------------------------------------===//

// Instructions requiring HasSIMD128 and the simd128 prefix byte
multiclass SIMD_I<dag oops_r, dag iops_r, dag oops_s, dag iops_s,
                  list<dag> pattern_r, string asmstr_r = "",
                  string asmstr_s = "", bits<32> simdop = -1> {
  defm "" : I<oops_r, iops_r, oops_s, iops_s, pattern_r, asmstr_r, asmstr_s,
              !or(0xfd00, !and(0xff, simdop))>,
            Requires<[HasSIMD128]>;
}

defm "" : ARGUMENT<V128, v16i8>;
defm "" : ARGUMENT<V128, v8i16>;
defm "" : ARGUMENT<V128, v4i32>;
defm "" : ARGUMENT<V128, v2i64>;
defm "" : ARGUMENT<V128, v4f32>;
defm "" : ARGUMENT<V128, v2f64>;

// Constrained immediate argument types
foreach SIZE = [8, 16] in
def ImmI#SIZE : ImmLeaf<i32,
  "return -(1 << ("#SIZE#" - 1)) <= Imm && Imm < (1 << ("#SIZE#" - 1));"
>;
foreach SIZE = [2, 4, 8, 16, 32] in
def LaneIdx#SIZE : ImmLeaf<i32, "return 0 <= Imm && Imm < "#SIZE#";">;

//===----------------------------------------------------------------------===//
// Load and store
//===----------------------------------------------------------------------===//

// Load: v128.load
multiclass SIMDLoad<ValueType vec_t> {
  let mayLoad = 1, UseNamedOperandTable = 1 in
  defm LOAD_#vec_t :
    SIMD_I<(outs V128:$dst), (ins P2Align:$p2align, offset32_op:$off, I32:$addr),
           (outs), (ins P2Align:$p2align, offset32_op:$off), [],
           "v128.load\t$dst, ${off}(${addr})$p2align",
           "v128.load\t$off$p2align", 0>;
}

foreach vec_t = [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64] in {
defm "" : SIMDLoad<vec_t>;

// Def load and store patterns from WebAssemblyInstrMemory.td for vector types
def : LoadPatNoOffset<vec_t, load, !cast<NI>("LOAD_"#vec_t)>;
def : LoadPatImmOff<vec_t, load, regPlusImm, !cast<NI>("LOAD_"#vec_t)>;
def : LoadPatImmOff<vec_t, load, or_is_add, !cast<NI>("LOAD_"#vec_t)>;
def : LoadPatGlobalAddr<vec_t, load, !cast<NI>("LOAD_"#vec_t)>;
def : LoadPatOffsetOnly<vec_t, load, !cast<NI>("LOAD_"#vec_t)>;
def : LoadPatGlobalAddrOffOnly<vec_t, load, !cast<NI>("LOAD_"#vec_t)>;
}

// Store: v128.store
multiclass SIMDStore<ValueType vec_t> {
  let mayStore = 1, UseNamedOperandTable = 1 in
  defm STORE_#vec_t :
    SIMD_I<(outs), (ins P2Align:$p2align, offset32_op:$off, I32:$addr, V128:$vec),
           (outs), (ins P2Align:$p2align, offset32_op:$off), [],
           "v128.store\t${off}(${addr})$p2align, $vec",
           "v128.store\t$off$p2align", 1>;
}

foreach vec_t = [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64] in {
defm "" : SIMDStore<vec_t>;

// Def load and store patterns from WebAssemblyInstrMemory.td for vector types
def : StorePatNoOffset<vec_t, store, !cast<NI>("STORE_"#vec_t)>;
def : StorePatImmOff<vec_t, store, regPlusImm, !cast<NI>("STORE_"#vec_t)>;
def : StorePatImmOff<vec_t, store, or_is_add, !cast<NI>("STORE_"#vec_t)>;
def : StorePatGlobalAddr<vec_t, store, !cast<NI>("STORE_"#vec_t)>;
def : StorePatOffsetOnly<vec_t, store, !cast<NI>("STORE_"#vec_t)>;
def : StorePatGlobalAddrOffOnly<vec_t, store, !cast<NI>("STORE_"#vec_t)>;
}

//===----------------------------------------------------------------------===//
// Constructing SIMD values
//===----------------------------------------------------------------------===//

// Constant: v128.const
multiclass ConstVec<ValueType vec_t, dag ops, dag pat, string args> {
  let isMoveImm = 1, isReMaterializable = 1,
      Predicates = [HasSIMD128, HasUnimplementedSIMD128] in
  defm CONST_V128_#vec_t : SIMD_I<(outs V128:$dst), ops, (outs), ops,
                                  [(set V128:$dst, (vec_t pat))],
                                  "v128.const\t$dst, "#args,
                                  "v128.const\t"#args, 2>;
}

defm "" : ConstVec<v16i8,
                   (ins vec_i8imm_op:$i0, vec_i8imm_op:$i1,
                        vec_i8imm_op:$i2, vec_i8imm_op:$i3,
                        vec_i8imm_op:$i4, vec_i8imm_op:$i5,
                        vec_i8imm_op:$i6, vec_i8imm_op:$i7,
                        vec_i8imm_op:$i8, vec_i8imm_op:$i9,
                        vec_i8imm_op:$iA, vec_i8imm_op:$iB,
                        vec_i8imm_op:$iC, vec_i8imm_op:$iD,
                        vec_i8imm_op:$iE, vec_i8imm_op:$iF),
                   (build_vector ImmI8:$i0, ImmI8:$i1, ImmI8:$i2, ImmI8:$i3,
                                 ImmI8:$i4, ImmI8:$i5, ImmI8:$i6, ImmI8:$i7,
                                 ImmI8:$i8, ImmI8:$i9, ImmI8:$iA, ImmI8:$iB,
                                 ImmI8:$iC, ImmI8:$iD, ImmI8:$iE, ImmI8:$iF),
                   !strconcat("$i0, $i1, $i2, $i3, $i4, $i5, $i6, $i7, ",
                              "$i8, $i9, $iA, $iB, $iC, $iD, $iE, $iF")>;
defm "" : ConstVec<v8i16,
                   (ins vec_i16imm_op:$i0, vec_i16imm_op:$i1,
                        vec_i16imm_op:$i2, vec_i16imm_op:$i3,
                        vec_i16imm_op:$i4, vec_i16imm_op:$i5,
                        vec_i16imm_op:$i6, vec_i16imm_op:$i7),
                   (build_vector
                     ImmI16:$i0, ImmI16:$i1, ImmI16:$i2, ImmI16:$i3,
                     ImmI16:$i4, ImmI16:$i5, ImmI16:$i6, ImmI16:$i7),
                   "$i0, $i1, $i2, $i3, $i4, $i5, $i6, $i7">;
let IsCanonical = 1 in
defm "" : ConstVec<v4i32,
                   (ins vec_i32imm_op:$i0, vec_i32imm_op:$i1,
                        vec_i32imm_op:$i2, vec_i32imm_op:$i3),
                   (build_vector (i32 imm:$i0), (i32 imm:$i1),
                                 (i32 imm:$i2), (i32 imm:$i3)),
                   "$i0, $i1, $i2, $i3">;
defm "" : ConstVec<v2i64,
                   (ins vec_i64imm_op:$i0, vec_i64imm_op:$i1),
                   (build_vector (i64 imm:$i0), (i64 imm:$i1)),
                   "$i0, $i1">;
defm "" : ConstVec<v4f32,
                   (ins f32imm_op:$i0, f32imm_op:$i1,
                        f32imm_op:$i2, f32imm_op:$i3),
                   (build_vector (f32 fpimm:$i0), (f32 fpimm:$i1),
                                 (f32 fpimm:$i2), (f32 fpimm:$i3)),
                   "$i0, $i1, $i2, $i3">;
defm "" : ConstVec<v2f64,
                  (ins f64imm_op:$i0, f64imm_op:$i1),
                  (build_vector (f64 fpimm:$i0), (f64 fpimm:$i1)),
                  "$i0, $i1">;

// Shuffle lanes: shuffle
defm SHUFFLE :
  SIMD_I<(outs V128:$dst),
         (ins V128:$x, V128:$y,
           vec_i8imm_op:$m0, vec_i8imm_op:$m1,
           vec_i8imm_op:$m2, vec_i8imm_op:$m3,
           vec_i8imm_op:$m4, vec_i8imm_op:$m5,
           vec_i8imm_op:$m6, vec_i8imm_op:$m7,
           vec_i8imm_op:$m8, vec_i8imm_op:$m9,
           vec_i8imm_op:$mA, vec_i8imm_op:$mB,
           vec_i8imm_op:$mC, vec_i8imm_op:$mD,
           vec_i8imm_op:$mE, vec_i8imm_op:$mF),
         (outs),
         (ins
           vec_i8imm_op:$m0, vec_i8imm_op:$m1,
           vec_i8imm_op:$m2, vec_i8imm_op:$m3,
           vec_i8imm_op:$m4, vec_i8imm_op:$m5,
           vec_i8imm_op:$m6, vec_i8imm_op:$m7,
           vec_i8imm_op:$m8, vec_i8imm_op:$m9,
           vec_i8imm_op:$mA, vec_i8imm_op:$mB,
           vec_i8imm_op:$mC, vec_i8imm_op:$mD,
           vec_i8imm_op:$mE, vec_i8imm_op:$mF),
         [],
         "v8x16.shuffle\t$dst, $x, $y, "#
           "$m0, $m1, $m2, $m3, $m4, $m5, $m6, $m7, "#
           "$m8, $m9, $mA, $mB, $mC, $mD, $mE, $mF",
         "v8x16.shuffle\t"#
           "$m0, $m1, $m2, $m3, $m4, $m5, $m6, $m7, "#
           "$m8, $m9, $mA, $mB, $mC, $mD, $mE, $mF",
         3>;

// Shuffles after custom lowering
def wasm_shuffle_t : SDTypeProfile<1, 18, []>;
def wasm_shuffle : SDNode<"WebAssemblyISD::SHUFFLE", wasm_shuffle_t>;
foreach vec_t = [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64] in {
def : Pat<(vec_t (wasm_shuffle (vec_t V128:$x), (vec_t V128:$y),
            (i32 LaneIdx32:$m0), (i32 LaneIdx32:$m1),
            (i32 LaneIdx32:$m2), (i32 LaneIdx32:$m3),
            (i32 LaneIdx32:$m4), (i32 LaneIdx32:$m5),
            (i32 LaneIdx32:$m6), (i32 LaneIdx32:$m7),
            (i32 LaneIdx32:$m8), (i32 LaneIdx32:$m9),
            (i32 LaneIdx32:$mA), (i32 LaneIdx32:$mB),
            (i32 LaneIdx32:$mC), (i32 LaneIdx32:$mD),
            (i32 LaneIdx32:$mE), (i32 LaneIdx32:$mF))),
          (vec_t (SHUFFLE (vec_t V128:$x), (vec_t V128:$y),
            (i32 LaneIdx32:$m0), (i32 LaneIdx32:$m1),
            (i32 LaneIdx32:$m2), (i32 LaneIdx32:$m3),
            (i32 LaneIdx32:$m4), (i32 LaneIdx32:$m5),
            (i32 LaneIdx32:$m6), (i32 LaneIdx32:$m7),
            (i32 LaneIdx32:$m8), (i32 LaneIdx32:$m9),
            (i32 LaneIdx32:$mA), (i32 LaneIdx32:$mB),
            (i32 LaneIdx32:$mC), (i32 LaneIdx32:$mD),
            (i32 LaneIdx32:$mE), (i32 LaneIdx32:$mF)))>;
}

// Create vector with identical lanes: splat
def splat2 : PatFrag<(ops node:$x), (build_vector node:$x, node:$x)>;
def splat4 : PatFrag<(ops node:$x), (build_vector
                       node:$x, node:$x, node:$x, node:$x)>;
def splat8 : PatFrag<(ops node:$x), (build_vector
                       node:$x, node:$x, node:$x, node:$x,
                       node:$x, node:$x, node:$x, node:$x)>;
def splat16 : PatFrag<(ops node:$x), (build_vector
                        node:$x, node:$x, node:$x, node:$x,
                        node:$x, node:$x, node:$x, node:$x,
                        node:$x, node:$x, node:$x, node:$x,
                        node:$x, node:$x, node:$x, node:$x)>;

multiclass Splat<ValueType vec_t, string vec, WebAssemblyRegClass reg_t,
                 PatFrag splat_pat, bits<32> simdop> {
  // Prefer splats over v128.const for const splats (65 is lowest that works)
  let AddedComplexity = 65 in
  defm SPLAT_#vec_t : SIMD_I<(outs V128:$dst), (ins reg_t:$x), (outs), (ins),
                             [(set (vec_t V128:$dst), (splat_pat reg_t:$x))],
                             vec#".splat\t$dst, $x", vec#".splat", simdop>;
}

defm "" : Splat<v16i8, "i8x16", I32, splat16, 4>;
defm "" : Splat<v8i16, "i16x8", I32, splat8, 8>;
defm "" : Splat<v4i32, "i32x4", I32, splat4, 12>;
defm "" : Splat<v2i64, "i64x2", I64, splat2, 15>;
defm "" : Splat<v4f32, "f32x4", F32, splat4, 18>;
defm "" : Splat<v2f64, "f64x2", F64, splat2, 21>;

// scalar_to_vector leaves high lanes undefined, so can be a splat
class ScalarSplatPat<ValueType vec_t, ValueType lane_t,
                     WebAssemblyRegClass reg_t> :
  Pat<(vec_t (scalar_to_vector (lane_t reg_t:$x))),
      (!cast<Instruction>("SPLAT_"#vec_t) reg_t:$x)>;

def : ScalarSplatPat<v16i8, i32, I32>;
def : ScalarSplatPat<v8i16, i32, I32>;
def : ScalarSplatPat<v4i32, i32, I32>;
def : ScalarSplatPat<v2i64, i64, I64>;
def : ScalarSplatPat<v4f32, f32, F32>;
def : ScalarSplatPat<v2f64, f64, F64>;

//===----------------------------------------------------------------------===//
// Accessing lanes
//===----------------------------------------------------------------------===//

// Extract lane as a scalar: extract_lane / extract_lane_s / extract_lane_u
multiclass ExtractLane<ValueType vec_t, string vec, ImmLeaf imm_t,
                       WebAssemblyRegClass reg_t, bits<32> simdop,
                       string suffix = "", SDNode extract = vector_extract> {
  defm EXTRACT_LANE_#vec_t#suffix :
      SIMD_I<(outs reg_t:$dst), (ins V128:$vec, vec_i8imm_op:$idx),
             (outs), (ins vec_i8imm_op:$idx),
             [(set reg_t:$dst, (extract (vec_t V128:$vec), (i32 imm_t:$idx)))],
             vec#".extract_lane"#suffix#"\t$dst, $vec, $idx",
             vec#".extract_lane"#suffix#"\t$idx", simdop>;
}

multiclass ExtractPat<ValueType lane_t, int mask> {
  def _s : PatFrag<(ops node:$vec, node:$idx),
                   (i32 (sext_inreg
                     (i32 (vector_extract
                       node:$vec,
                       node:$idx
                     )),
                     lane_t
                   ))>;
  def _u : PatFrag<(ops node:$vec, node:$idx),
                   (i32 (and
                     (i32 (vector_extract
                       node:$vec,
                       node:$idx
                     )),
                     (i32 mask)
                   ))>;
}

defm extract_i8x16 : ExtractPat<i8, 0xff>;
defm extract_i16x8 : ExtractPat<i16, 0xffff>;

multiclass ExtractLaneExtended<string sign, bits<32> baseInst> {
  defm "" : ExtractLane<v16i8, "i8x16", LaneIdx16, I32, baseInst, sign,
                        !cast<PatFrag>("extract_i8x16"#sign)>;
  defm "" : ExtractLane<v8i16, "i16x8", LaneIdx8, I32, !add(baseInst, 4), sign,
                        !cast<PatFrag>("extract_i16x8"#sign)>;
}

defm "" : ExtractLaneExtended<"_s", 5>;
let Predicates = [HasSIMD128, HasUnimplementedSIMD128] in
defm "" : ExtractLaneExtended<"_u", 6>;
defm "" : ExtractLane<v4i32, "i32x4", LaneIdx4, I32, 13>;
defm "" : ExtractLane<v2i64, "i64x2", LaneIdx2, I64, 16>;
defm "" : ExtractLane<v4f32, "f32x4", LaneIdx4, F32, 19>;
defm "" : ExtractLane<v2f64, "f64x2", LaneIdx2, F64, 22>;

// It would be more conventional to use unsigned extracts, but v8
// doesn't implement them yet
def : Pat<(i32 (vector_extract (v16i8 V128:$vec), (i32 LaneIdx16:$idx))),
          (EXTRACT_LANE_v16i8_s V128:$vec, (i32 LaneIdx16:$idx))>;
def : Pat<(i32 (vector_extract (v8i16 V128:$vec), (i32 LaneIdx8:$idx))),
          (EXTRACT_LANE_v8i16_s V128:$vec, (i32 LaneIdx8:$idx))>;

// Lower undef lane indices to zero
def : Pat<(and (i32 (vector_extract (v16i8 V128:$vec), undef)), (i32 0xff)),
          (EXTRACT_LANE_v16i8_u V128:$vec, 0)>;
def : Pat<(and (i32 (vector_extract (v8i16 V128:$vec), undef)), (i32 0xffff)),
          (EXTRACT_LANE_v8i16_u V128:$vec, 0)>;
def : Pat<(i32 (vector_extract (v16i8 V128:$vec), undef)),
          (EXTRACT_LANE_v16i8_u V128:$vec, 0)>;
def : Pat<(i32 (vector_extract (v8i16 V128:$vec), undef)),
          (EXTRACT_LANE_v8i16_u V128:$vec, 0)>;
def : Pat<(sext_inreg (i32 (vector_extract (v16i8 V128:$vec), undef)), i8),
          (EXTRACT_LANE_v16i8_s V128:$vec, 0)>;
def : Pat<(sext_inreg (i32 (vector_extract (v8i16 V128:$vec), undef)), i16),
          (EXTRACT_LANE_v8i16_s V128:$vec, 0)>;
def : Pat<(vector_extract (v4i32 V128:$vec), undef),
          (EXTRACT_LANE_v4i32 V128:$vec, 0)>;
def : Pat<(vector_extract (v2i64 V128:$vec), undef),
          (EXTRACT_LANE_v2i64 V128:$vec, 0)>;
def : Pat<(vector_extract (v4f32 V128:$vec), undef),
          (EXTRACT_LANE_v4f32 V128:$vec, 0)>;
def : Pat<(vector_extract (v2f64 V128:$vec), undef),
          (EXTRACT_LANE_v2f64 V128:$vec, 0)>;

// Replace lane value: replace_lane
multiclass ReplaceLane<ValueType vec_t, string vec, ImmLeaf imm_t,
                       WebAssemblyRegClass reg_t, ValueType lane_t,
                       bits<32> simdop> {
  defm REPLACE_LANE_#vec_t :
      SIMD_I<(outs V128:$dst), (ins V128:$vec, vec_i8imm_op:$idx, reg_t:$x),
             (outs), (ins vec_i8imm_op:$idx),
             [(set V128:$dst, (vector_insert
               (vec_t V128:$vec), (lane_t reg_t:$x), (i32 imm_t:$idx)))],
             vec#".replace_lane\t$dst, $vec, $idx, $x",
             vec#".replace_lane\t$idx", simdop>;
}

defm "" : ReplaceLane<v16i8, "i8x16", LaneIdx16, I32, i32, 7>;
defm "" : ReplaceLane<v8i16, "i16x8", LaneIdx8, I32, i32, 11>;
defm "" : ReplaceLane<v4i32, "i32x4", LaneIdx4, I32, i32, 14>;
defm "" : ReplaceLane<v2i64, "i64x2", LaneIdx2, I64, i64, 17>;
defm "" : ReplaceLane<v4f32, "f32x4", LaneIdx4, F32, f32, 20>;
defm "" : ReplaceLane<v2f64, "f64x2", LaneIdx2, F64, f64, 23>;

// Lower undef lane indices to zero
def : Pat<(vector_insert (v16i8 V128:$vec), I32:$x, undef),
          (REPLACE_LANE_v16i8 V128:$vec, 0, I32:$x)>;
def : Pat<(vector_insert (v8i16 V128:$vec), I32:$x, undef),
          (REPLACE_LANE_v8i16 V128:$vec, 0, I32:$x)>;
def : Pat<(vector_insert (v4i32 V128:$vec), I32:$x, undef),
          (REPLACE_LANE_v4i32 V128:$vec, 0, I32:$x)>;
def : Pat<(vector_insert (v2i64 V128:$vec), I64:$x, undef),
          (REPLACE_LANE_v2i64 V128:$vec, 0, I64:$x)>;
def : Pat<(vector_insert (v4f32 V128:$vec), F32:$x, undef),
          (REPLACE_LANE_v4f32 V128:$vec, 0, F32:$x)>;
def : Pat<(vector_insert (v2f64 V128:$vec), F64:$x, undef),
          (REPLACE_LANE_v2f64 V128:$vec, 0, F64:$x)>;

//===----------------------------------------------------------------------===//
// Comparisons
//===----------------------------------------------------------------------===//

multiclass SIMDCondition<ValueType vec_t, ValueType out_t, string vec,
                         string name, CondCode cond, bits<32> simdop> {
  defm _#vec_t :
    SIMD_I<(outs V128:$dst), (ins V128:$lhs, V128:$rhs), (outs), (ins),
           [(set (out_t V128:$dst),
             (setcc (vec_t V128:$lhs), (vec_t V128:$rhs), cond)
           )],
           vec#"."#name#"\t$dst, $lhs, $rhs", vec#"."#name, simdop>;
}

multiclass SIMDConditionInt<string name, CondCode cond, bits<32> baseInst> {
  defm "" : SIMDCondition<v16i8, v16i8, "i8x16", name, cond, baseInst>;
  defm "" : SIMDCondition<v8i16, v8i16, "i16x8", name, cond,
                          !add(baseInst, 10)>;
  defm "" : SIMDCondition<v4i32, v4i32, "i32x4", name, cond,
                          !add(baseInst, 20)>;
}

multiclass SIMDConditionFP<string name, CondCode cond, bits<32> baseInst> {
  defm "" : SIMDCondition<v4f32, v4i32, "f32x4", name, cond, baseInst>;
  defm "" : SIMDCondition<v2f64, v2i64, "f64x2", name, cond,
                          !add(baseInst, 6)>;
}

// Equality: eq
let isCommutable = 1 in {
defm EQ : SIMDConditionInt<"eq", SETEQ, 24>;
defm EQ : SIMDConditionFP<"eq", SETOEQ, 64>;
} // isCommutable = 1

// Non-equality: ne
let isCommutable = 1 in {
defm NE : SIMDConditionInt<"ne", SETNE, 25>;
defm NE : SIMDConditionFP<"ne", SETUNE, 65>;
} // isCommutable = 1

// Less than: lt_s / lt_u / lt
defm LT_S : SIMDConditionInt<"lt_s", SETLT, 26>;
defm LT_U : SIMDConditionInt<"lt_u", SETULT, 27>;
defm LT : SIMDConditionFP<"lt", SETOLT, 66>;

// Greater than: gt_s / gt_u / gt
defm GT_S : SIMDConditionInt<"gt_s", SETGT, 28>;
defm GT_U : SIMDConditionInt<"gt_u", SETUGT, 29>;
defm GT : SIMDConditionFP<"gt", SETOGT, 67>;

// Less than or equal: le_s / le_u / le
defm LE_S : SIMDConditionInt<"le_s", SETLE, 30>;
defm LE_U : SIMDConditionInt<"le_u", SETULE, 31>;
defm LE : SIMDConditionFP<"le", SETOLE, 68>;

// Greater than or equal: ge_s / ge_u / ge
defm GE_S : SIMDConditionInt<"ge_s", SETGE, 32>;
defm GE_U : SIMDConditionInt<"ge_u", SETUGE, 33>;
defm GE : SIMDConditionFP<"ge", SETOGE, 69>;

// Lower float comparisons that don't care about NaN to standard WebAssembly
// float comparisons. These instructions are generated with nnan and in the
// target-independent expansion of unordered comparisons and ordered ne.
foreach nodes = [[seteq, EQ_v4f32], [setne, NE_v4f32], [setlt, LT_v4f32],
                 [setgt, GT_v4f32], [setle, LE_v4f32], [setge, GE_v4f32]] in
def : Pat<(v4i32 (nodes[0] (v4f32 V128:$lhs), (v4f32 V128:$rhs))),
          (v4i32 (nodes[1] (v4f32 V128:$lhs), (v4f32 V128:$rhs)))>;

foreach nodes = [[seteq, EQ_v2f64], [setne, NE_v2f64], [setlt, LT_v2f64],
                 [setgt, GT_v2f64], [setle, LE_v2f64], [setge, GE_v2f64]] in
def : Pat<(v2i64 (nodes[0] (v2f64 V128:$lhs), (v2f64 V128:$rhs))),
          (v2i64 (nodes[1] (v2f64 V128:$lhs), (v2f64 V128:$rhs)))>;


//===----------------------------------------------------------------------===//
// Bitwise operations
//===----------------------------------------------------------------------===//

multiclass SIMDBinary<ValueType vec_t, string vec, SDNode node, string name,
                      bits<32> simdop> {
  defm _#vec_t : SIMD_I<(outs V128:$dst), (ins V128:$lhs, V128:$rhs),
                        (outs), (ins),
                        [(set (vec_t V128:$dst),
                          (node (vec_t V128:$lhs), (vec_t V128:$rhs))
                        )],
                        vec#"."#name#"\t$dst, $lhs, $rhs", vec#"."#name,
                        simdop>;
}

multiclass SIMDBitwise<SDNode node, string name, bits<32> simdop> {
  defm "" : SIMDBinary<v16i8, "v128", node, name, simdop>;
  defm "" : SIMDBinary<v8i16, "v128", node, name, simdop>;
  defm "" : SIMDBinary<v4i32, "v128", node, name, simdop>;
  defm "" : SIMDBinary<v2i64, "v128", node, name, simdop>;
}

multiclass SIMDUnary<ValueType vec_t, string vec, SDNode node, string name,
                     bits<32> simdop> {
  defm _#vec_t : SIMD_I<(outs V128:$dst), (ins V128:$vec), (outs), (ins),
                        [(set (vec_t V128:$dst),
                          (vec_t (node (vec_t V128:$vec)))
                        )],
                        vec#"."#name#"\t$dst, $vec", vec#"."#name, simdop>;
}

// Bitwise logic: v128.not
foreach vec_t = [v16i8, v8i16, v4i32, v2i64] in
defm NOT: SIMDUnary<vec_t, "v128", vnot, "not", 76>;

// Bitwise logic: v128.and / v128.or / v128.xor
let isCommutable = 1 in {
defm AND : SIMDBitwise<and, "and", 77>;
defm OR : SIMDBitwise<or, "or", 78>;
defm XOR : SIMDBitwise<xor, "xor", 79>;
} // isCommutable = 1

// Bitwise select: v128.bitselect
foreach vec_t = [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64] in
  defm BITSELECT_#vec_t :
    SIMD_I<(outs V128:$dst), (ins V128:$v1, V128:$v2, V128:$c), (outs), (ins),
           [(set (vec_t V128:$dst),
             (vec_t (int_wasm_bitselect
               (vec_t V128:$v1), (vec_t V128:$v2), (vec_t V128:$c)
             ))
           )],
           "v128.bitselect\t$dst, $v1, $v2, $c", "v128.bitselect", 80>;

// Bitselect is equivalent to (c & v1) | (~c & v2)
foreach vec_t = [v16i8, v8i16, v4i32, v2i64] in
  def : Pat<(vec_t (or (and (vec_t V128:$c), (vec_t V128:$v1)),
              (and (vnot V128:$c), (vec_t V128:$v2)))),
            (!cast<Instruction>("BITSELECT_"#vec_t)
              V128:$v1, V128:$v2, V128:$c)>;

//===----------------------------------------------------------------------===//
// Integer unary arithmetic
//===----------------------------------------------------------------------===//

multiclass SIMDUnaryInt<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDUnary<v16i8, "i8x16", node, name, baseInst>;
  defm "" : SIMDUnary<v8i16, "i16x8", node, name, !add(baseInst, 17)>;
  defm "" : SIMDUnary<v4i32, "i32x4", node, name, !add(baseInst, 34)>;
  defm "" : SIMDUnary<v2i64, "i64x2", node, name, !add(baseInst, 51)>;
}

multiclass SIMDReduceVec<ValueType vec_t, string vec, SDNode op, string name,
                         bits<32> simdop> {
  defm _#vec_t : SIMD_I<(outs I32:$dst), (ins V128:$vec), (outs), (ins),
                        [(set I32:$dst, (i32 (op (vec_t V128:$vec))))],
                        vec#"."#name#"\t$dst, $vec", vec#"."#name, simdop>;
}

multiclass SIMDReduce<SDNode op, string name, bits<32> baseInst> {
  defm "" : SIMDReduceVec<v16i8, "i8x16", op, name, baseInst>;
  defm "" : SIMDReduceVec<v8i16, "i16x8", op, name, !add(baseInst, 17)>;
  defm "" : SIMDReduceVec<v4i32, "i32x4", op, name, !add(baseInst, 34)>;
  defm "" : SIMDReduceVec<v2i64, "i64x2", op, name, !add(baseInst, 51)>;
}

// Integer vector negation
def ivneg : PatFrag<(ops node:$in), (sub immAllZerosV, node:$in)>;

// Integer negation: neg
defm NEG : SIMDUnaryInt<ivneg, "neg", 81>;

// Any lane true: any_true
defm ANYTRUE : SIMDReduce<int_wasm_anytrue, "any_true", 82>;

// All lanes true: all_true
defm ALLTRUE : SIMDReduce<int_wasm_alltrue, "all_true", 83>;

// Reductions already return 0 or 1, so and 1, setne 0, and seteq 1
// can be folded out
foreach reduction =
  [["int_wasm_anytrue", "ANYTRUE"], ["int_wasm_alltrue", "ALLTRUE"]] in
foreach ty = [v16i8, v8i16, v4i32, v2i64] in {
def : Pat<(i32 (and
            (i32 (!cast<Intrinsic>(reduction[0]) (ty V128:$x))),
            (i32 1)
          )),
          (i32 (!cast<NI>(reduction[1]#"_"#ty) (ty V128:$x)))>;
def : Pat<(i32 (setne
            (i32 (!cast<Intrinsic>(reduction[0]) (ty V128:$x))),
            (i32 0)
          )),
          (i32 (!cast<NI>(reduction[1]#"_"#ty) (ty V128:$x)))>;
def : Pat<(i32 (seteq
            (i32 (!cast<Intrinsic>(reduction[0]) (ty V128:$x))),
            (i32 1)
          )),
          (i32 (!cast<NI>(reduction[1]#"_"#ty) (ty V128:$x)))>;
}

//===----------------------------------------------------------------------===//
// Bit shifts
//===----------------------------------------------------------------------===//

multiclass SIMDShift<ValueType vec_t, string vec, SDNode node, dag shift_vec,
                     string name, bits<32> simdop> {
  defm _#vec_t : SIMD_I<(outs V128:$dst), (ins V128:$vec, I32:$x),
                        (outs), (ins),
                        [(set (vec_t V128:$dst),
                          (node V128:$vec, (vec_t shift_vec)))],
                        vec#"."#name#"\t$dst, $vec, $x", vec#"."#name, simdop>;
}

multiclass SIMDShiftInt<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDShift<v16i8, "i8x16", node, (splat16 I32:$x), name, baseInst>;
  defm "" : SIMDShift<v8i16, "i16x8", node, (splat8 I32:$x), name,
                      !add(baseInst, 17)>;
  defm "" : SIMDShift<v4i32, "i32x4", node, (splat4 I32:$x), name,
                      !add(baseInst, 34)>;
  defm "" : SIMDShift<v2i64, "i64x2", node, (splat2 (i64 (zext I32:$x))),
                      name, !add(baseInst, 51)>;
}

// Left shift by scalar: shl
defm SHL : SIMDShiftInt<shl, "shl", 84>;

// Right shift by scalar: shr_s / shr_u
defm SHR_S : SIMDShiftInt<sra, "shr_s", 85>;
defm SHR_U : SIMDShiftInt<srl, "shr_u", 86>;

// Truncate i64 shift operands to i32s, except if they are already i32s
foreach shifts = [[shl, SHL_v2i64], [sra, SHR_S_v2i64], [srl, SHR_U_v2i64]] in {
def : Pat<(v2i64 (shifts[0]
            (v2i64 V128:$vec),
            (v2i64 (splat2 (i64 (sext I32:$x))))
          )),
          (v2i64 (shifts[1] (v2i64 V128:$vec), (i32 I32:$x)))>;
def : Pat<(v2i64 (shifts[0] (v2i64 V128:$vec), (v2i64 (splat2 I64:$x)))),
          (v2i64 (shifts[1] (v2i64 V128:$vec), (I32_WRAP_I64 I64:$x)))>;
}

// 2xi64 shifts with constant shift amounts are custom lowered to avoid wrapping
def wasm_shift_t : SDTypeProfile<1, 2,
  [SDTCisVec<0>, SDTCisSameAs<0, 1>, SDTCisVT<2, i32>]
>;
def wasm_shl : SDNode<"WebAssemblyISD::VEC_SHL", wasm_shift_t>;
def wasm_shr_s : SDNode<"WebAssemblyISD::VEC_SHR_S", wasm_shift_t>;
def wasm_shr_u : SDNode<"WebAssemblyISD::VEC_SHR_U", wasm_shift_t>;
foreach shifts = [[wasm_shl, SHL_v2i64],
                  [wasm_shr_s, SHR_S_v2i64],
                  [wasm_shr_u, SHR_U_v2i64]] in
def : Pat<(v2i64 (shifts[0] (v2i64 V128:$vec), I32:$x)),
          (v2i64 (shifts[1] (v2i64 V128:$vec), I32:$x))>;

//===----------------------------------------------------------------------===//
// Integer binary arithmetic
//===----------------------------------------------------------------------===//

multiclass SIMDBinaryIntSmall<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDBinary<v16i8, "i8x16", node, name, baseInst>;
  defm "" : SIMDBinary<v8i16, "i16x8", node, name, !add(baseInst, 17)>;
}

multiclass SIMDBinaryIntNoI64x2<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDBinaryIntSmall<node, name, baseInst>;
  defm "" : SIMDBinary<v4i32, "i32x4", node, name, !add(baseInst, 34)>;
}

multiclass SIMDBinaryInt<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDBinaryIntNoI64x2<node, name, baseInst>;
  defm "" : SIMDBinary<v2i64, "i64x2", node, name, !add(baseInst, 51)>;
}

// Integer addition: add / add_saturate_s / add_saturate_u
let isCommutable = 1 in {
defm ADD : SIMDBinaryInt<add, "add", 87>;
defm ADD_SAT_S : SIMDBinaryIntSmall<saddsat, "add_saturate_s", 88>;
defm ADD_SAT_U : SIMDBinaryIntSmall<uaddsat, "add_saturate_u", 89>;
} // isCommutable = 1

// Integer subtraction: sub / sub_saturate_s / sub_saturate_u
defm SUB : SIMDBinaryInt<sub, "sub", 90>;
defm SUB_SAT_S :
  SIMDBinaryIntSmall<int_wasm_sub_saturate_signed, "sub_saturate_s", 91>;
defm SUB_SAT_U :
  SIMDBinaryIntSmall<int_wasm_sub_saturate_unsigned, "sub_saturate_u", 92>;

// Integer multiplication: mul
defm MUL : SIMDBinaryIntNoI64x2<mul, "mul", 93>;

//===----------------------------------------------------------------------===//
// Floating-point unary arithmetic
//===----------------------------------------------------------------------===//

multiclass SIMDUnaryFP<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDUnary<v4f32, "f32x4", node, name, baseInst>;
  defm "" : SIMDUnary<v2f64, "f64x2", node, name, !add(baseInst, 11)>;
}

// Absolute value: abs
defm ABS : SIMDUnaryFP<fabs, "abs", 149>;

// Negation: neg
defm NEG : SIMDUnaryFP<fneg, "neg", 150>;

// Square root: sqrt
let Predicates = [HasSIMD128, HasUnimplementedSIMD128] in
defm SQRT : SIMDUnaryFP<fsqrt, "sqrt", 151>;

//===----------------------------------------------------------------------===//
// Floating-point binary arithmetic
//===----------------------------------------------------------------------===//

multiclass SIMDBinaryFP<SDNode node, string name, bits<32> baseInst> {
  defm "" : SIMDBinary<v4f32, "f32x4", node, name, baseInst>;
  defm "" : SIMDBinary<v2f64, "f64x2", node, name, !add(baseInst, 11)>;
}

// Addition: add
let isCommutable = 1 in
defm ADD : SIMDBinaryFP<fadd, "add", 154>;

// Subtraction: sub
defm SUB : SIMDBinaryFP<fsub, "sub", 155>;

// Multiplication: mul
let isCommutable = 1 in
defm MUL : SIMDBinaryFP<fmul, "mul", 156>;

// Division: div
let Predicates = [HasSIMD128, HasUnimplementedSIMD128] in
defm DIV : SIMDBinaryFP<fdiv, "div", 157>;

// NaN-propagating minimum: min
defm MIN : SIMDBinaryFP<fminimum, "min", 158>;

// NaN-propagating maximum: max
defm MAX : SIMDBinaryFP<fmaximum, "max", 159>;

//===----------------------------------------------------------------------===//
// Conversions
//===----------------------------------------------------------------------===//

multiclass SIMDConvert<ValueType vec_t, ValueType arg_t, SDNode op,
                       string name, bits<32> simdop> {
  defm op#_#vec_t#_#arg_t :
    SIMD_I<(outs V128:$dst), (ins V128:$vec), (outs), (ins),
           [(set (vec_t V128:$dst), (vec_t (op (arg_t V128:$vec))))],
           name#"\t$dst, $vec", name, simdop>;
}

// Integer to floating point: convert
defm "" : SIMDConvert<v4f32, v4i32, sint_to_fp, "f32x4.convert_i32x4_s", 175>;
defm "" : SIMDConvert<v4f32, v4i32, uint_to_fp, "f32x4.convert_i32x4_u", 176>;
defm "" : SIMDConvert<v2f64, v2i64, sint_to_fp, "f64x2.convert_i64x2_s", 177>;
defm "" : SIMDConvert<v2f64, v2i64, uint_to_fp, "f64x2.convert_i64x2_u", 178>;

// Floating point to integer with saturation: trunc_sat
defm "" : SIMDConvert<v4i32, v4f32, fp_to_sint, "i32x4.trunc_sat_f32x4_s", 171>;
defm "" : SIMDConvert<v4i32, v4f32, fp_to_uint, "i32x4.trunc_sat_f32x4_u", 172>;
defm "" : SIMDConvert<v2i64, v2f64, fp_to_sint, "i64x2.trunc_sat_f64x2_s", 173>;
defm "" : SIMDConvert<v2i64, v2f64, fp_to_uint, "i64x2.trunc_sat_f64x2_u", 174>;

// Lower llvm.wasm.trunc.saturate.* to saturating instructions
def : Pat<(v4i32 (int_wasm_trunc_saturate_signed (v4f32 V128:$src))),
          (fp_to_sint_v4i32_v4f32 (v4f32 V128:$src))>;
def : Pat<(v4i32 (int_wasm_trunc_saturate_unsigned (v4f32 V128:$src))),
          (fp_to_uint_v4i32_v4f32 (v4f32 V128:$src))>;
def : Pat<(v2i64 (int_wasm_trunc_saturate_signed (v2f64 V128:$src))),
          (fp_to_sint_v2i64_v2f64 (v2f64 V128:$src))>;
def : Pat<(v2i64 (int_wasm_trunc_saturate_unsigned (v2f64 V128:$src))),
          (fp_to_uint_v2i64_v2f64 (v2f64 V128:$src))>;

// Bitcasts are nops
// Matching bitcast t1 to t1 causes strange errors, so avoid repeating types
foreach t1 = [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64] in
foreach t2 = !foldl(
  []<ValueType>, [v16i8, v8i16, v4i32, v2i64, v4f32, v2f64],
  acc, cur, !if(!eq(!cast<string>(t1), !cast<string>(cur)),
    acc, !listconcat(acc, [cur])
  )
) in
def : Pat<(t1 (bitconvert (t2 V128:$v))), (t1 V128:$v)>;