// DO NOT EDIT! This file generated by scripts/gen-s-parser.py

// clang-format off

#ifdef INSTRUCTION_PARSER
#undef INSTRUCTION_PARSER
char op[30] = {'\0'};
strncpy(op, s[0]->c_str(), 29);
switch (op[0]) {
  case 'a': {
    switch (op[1]) {
      case 'r': {
        switch (op[6]) {
          case 'c':
            if (strcmp(op, "array.copy") == 0) { return makeArrayCopy(s); }
            goto parse_error;
          case 'g': {
            switch (op[9]) {
              case '\0':
                if (strcmp(op, "array.get") == 0) { return makeArrayGet(s); }
                goto parse_error;
              case '_': {
                switch (op[10]) {
                  case 's':
                    if (strcmp(op, "array.get_s") == 0) { return makeArrayGet(s, Signed); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "array.get_u") == 0) { return makeArrayGet(s, Unsigned); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'l':
            if (strcmp(op, "array.len") == 0) { return makeArrayLen(s); }
            goto parse_error;
          case 'n': {
            switch (op[10]) {
              case 'd':
                if (strcmp(op, "array.new_default_with_rtt") == 0) { return makeArrayNew(s, true); }
                goto parse_error;
              case 'w':
                if (strcmp(op, "array.new_with_rtt") == 0) { return makeArrayNew(s, false); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 's':
            if (strcmp(op, "array.set") == 0) { return makeArraySet(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case 't':
        if (strcmp(op, "atomic.fence") == 0) { return makeAtomicFence(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'b': {
    switch (op[1]) {
      case 'l':
        if (strcmp(op, "block") == 0) { return makeBlock(s); }
        goto parse_error;
      case 'r': {
        switch (op[2]) {
          case '\0':
            if (strcmp(op, "br") == 0) { return makeBreak(s); }
            goto parse_error;
          case '_': {
            switch (op[3]) {
              case 'i':
                if (strcmp(op, "br_if") == 0) { return makeBreak(s); }
                goto parse_error;
              case 'o': {
                switch (op[6]) {
                  case 'c': {
                    switch (op[10]) {
                      case '\0':
                        if (strcmp(op, "br_on_cast") == 0) { return makeBrOn(s, BrOnCast); }
                        goto parse_error;
                      case '_':
                        if (strcmp(op, "br_on_cast_fail") == 0) { return makeBrOn(s, BrOnCastFail); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'd':
                    if (strcmp(op, "br_on_data") == 0) { return makeBrOn(s, BrOnData); }
                    goto parse_error;
                  case 'f':
                    if (strcmp(op, "br_on_func") == 0) { return makeBrOn(s, BrOnFunc); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "br_on_i31") == 0) { return makeBrOn(s, BrOnI31); }
                    goto parse_error;
                  case 'n': {
                    switch (op[7]) {
                      case 'o': {
                        switch (op[10]) {
                          case 'd':
                            if (strcmp(op, "br_on_non_data") == 0) { return makeBrOn(s, BrOnNonData); }
                            goto parse_error;
                          case 'f':
                            if (strcmp(op, "br_on_non_func") == 0) { return makeBrOn(s, BrOnNonFunc); }
                            goto parse_error;
                          case 'i':
                            if (strcmp(op, "br_on_non_i31") == 0) { return makeBrOn(s, BrOnNonI31); }
                            goto parse_error;
                          case 'n':
                            if (strcmp(op, "br_on_non_null") == 0) { return makeBrOn(s, BrOnNonNull); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'u':
                        if (strcmp(op, "br_on_null") == 0) { return makeBrOn(s, BrOnNull); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 't':
                if (strcmp(op, "br_table") == 0) { return makeBreakTable(s); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 'c': {
    switch (op[4]) {
      case '\0':
        if (strcmp(op, "call") == 0) { return makeCall(s, /*isReturn=*/false); }
        goto parse_error;
      case '_': {
        switch (op[5]) {
          case 'i':
            if (strcmp(op, "call_indirect") == 0) { return makeCallIndirect(s, /*isReturn=*/false); }
            goto parse_error;
          case 'r':
            if (strcmp(op, "call_ref") == 0) { return makeCallRef(s, /*isReturn=*/false); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 'd': {
    switch (op[1]) {
      case 'a':
        if (strcmp(op, "data.drop") == 0) { return makeDataDrop(s); }
        goto parse_error;
      case 'r':
        if (strcmp(op, "drop") == 0) { return makeDrop(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'e':
    if (strcmp(op, "else") == 0) { return makeThenOrElse(s); }
    goto parse_error;
  case 'f': {
    switch (op[1]) {
      case '3': {
        switch (op[3]) {
          case '.': {
            switch (op[4]) {
              case 'a': {
                switch (op[5]) {
                  case 'b':
                    if (strcmp(op, "f32.abs") == 0) { return makeUnary(s, UnaryOp::AbsFloat32); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "f32.add") == 0) { return makeBinary(s, BinaryOp::AddFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'c': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f32.ceil") == 0) { return makeUnary(s, UnaryOp::CeilFloat32); }
                    goto parse_error;
                  case 'o': {
                    switch (op[6]) {
                      case 'n': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "f32.const") == 0) { return makeConst(s, Type::f32); }
                            goto parse_error;
                          case 'v': {
                            switch (op[13]) {
                              case '3': {
                                switch (op[16]) {
                                  case 's':
                                    if (strcmp(op, "f32.convert_i32_s") == 0) { return makeUnary(s, UnaryOp::ConvertSInt32ToFloat32); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "f32.convert_i32_u") == 0) { return makeUnary(s, UnaryOp::ConvertUInt32ToFloat32); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case '6': {
                                switch (op[16]) {
                                  case 's':
                                    if (strcmp(op, "f32.convert_i64_s") == 0) { return makeUnary(s, UnaryOp::ConvertSInt64ToFloat32); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "f32.convert_i64_u") == 0) { return makeUnary(s, UnaryOp::ConvertUInt64ToFloat32); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'p':
                        if (strcmp(op, "f32.copysign") == 0) { return makeBinary(s, BinaryOp::CopySignFloat32); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'd': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f32.demote_f64") == 0) { return makeUnary(s, UnaryOp::DemoteFloat64); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f32.div") == 0) { return makeBinary(s, BinaryOp::DivFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e':
                if (strcmp(op, "f32.eq") == 0) { return makeBinary(s, BinaryOp::EqFloat32); }
                goto parse_error;
              case 'f':
                if (strcmp(op, "f32.floor") == 0) { return makeUnary(s, UnaryOp::FloorFloat32); }
                goto parse_error;
              case 'g': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f32.ge") == 0) { return makeBinary(s, BinaryOp::GeFloat32); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f32.gt") == 0) { return makeBinary(s, BinaryOp::GtFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f32.le") == 0) { return makeBinary(s, BinaryOp::LeFloat32); }
                    goto parse_error;
                  case 'o':
                    if (strcmp(op, "f32.load") == 0) { return makeLoad(s, Type::f32, /*isAtomic=*/false); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f32.lt") == 0) { return makeBinary(s, BinaryOp::LtFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'm': {
                switch (op[5]) {
                  case 'a':
                    if (strcmp(op, "f32.max") == 0) { return makeBinary(s, BinaryOp::MaxFloat32); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f32.min") == 0) { return makeBinary(s, BinaryOp::MinFloat32); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f32.mul") == 0) { return makeBinary(s, BinaryOp::MulFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n': {
                switch (op[6]) {
                  case '\0':
                    if (strcmp(op, "f32.ne") == 0) { return makeBinary(s, BinaryOp::NeFloat32); }
                    goto parse_error;
                  case 'a':
                    if (strcmp(op, "f32.nearest") == 0) { return makeUnary(s, UnaryOp::NearestFloat32); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "f32.neg") == 0) { return makeUnary(s, UnaryOp::NegFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'r':
                if (strcmp(op, "f32.reinterpret_i32") == 0) { return makeUnary(s, UnaryOp::ReinterpretInt32); }
                goto parse_error;
              case 's': {
                switch (op[5]) {
                  case 'q':
                    if (strcmp(op, "f32.sqrt") == 0) { return makeUnary(s, UnaryOp::SqrtFloat32); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f32.store") == 0) { return makeStore(s, Type::f32, /*isAtomic=*/false); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f32.sub") == 0) { return makeBinary(s, BinaryOp::SubFloat32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't':
                if (strcmp(op, "f32.trunc") == 0) { return makeUnary(s, UnaryOp::TruncFloat32); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'x': {
            switch (op[6]) {
              case 'a': {
                switch (op[7]) {
                  case 'b':
                    if (strcmp(op, "f32x4.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecF32x4); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "f32x4.add") == 0) { return makeBinary(s, BinaryOp::AddVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'c': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f32x4.ceil") == 0) { return makeUnary(s, UnaryOp::CeilVecF32x4); }
                    goto parse_error;
                  case 'o': {
                    switch (op[20]) {
                      case 's':
                        if (strcmp(op, "f32x4.convert_i32x4_s") == 0) { return makeUnary(s, UnaryOp::ConvertSVecI32x4ToVecF32x4); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "f32x4.convert_i32x4_u") == 0) { return makeUnary(s, UnaryOp::ConvertUVecI32x4ToVecF32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'd': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f32x4.demote_f64x2_zero") == 0) { return makeUnary(s, UnaryOp::DemoteZeroVecF64x2ToVecF32x4); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f32x4.div") == 0) { return makeBinary(s, BinaryOp::DivVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e': {
                switch (op[7]) {
                  case 'q':
                    if (strcmp(op, "f32x4.eq") == 0) { return makeBinary(s, BinaryOp::EqVecF32x4); }
                    goto parse_error;
                  case 'x':
                    if (strcmp(op, "f32x4.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecF32x4, 4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'f':
                if (strcmp(op, "f32x4.floor") == 0) { return makeUnary(s, UnaryOp::FloorVecF32x4); }
                goto parse_error;
              case 'g': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f32x4.ge") == 0) { return makeBinary(s, BinaryOp::GeVecF32x4); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f32x4.gt") == 0) { return makeBinary(s, BinaryOp::GtVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f32x4.le") == 0) { return makeBinary(s, BinaryOp::LeVecF32x4); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f32x4.lt") == 0) { return makeBinary(s, BinaryOp::LtVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'm': {
                switch (op[7]) {
                  case 'a':
                    if (strcmp(op, "f32x4.max") == 0) { return makeBinary(s, BinaryOp::MaxVecF32x4); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f32x4.min") == 0) { return makeBinary(s, BinaryOp::MinVecF32x4); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f32x4.mul") == 0) { return makeBinary(s, BinaryOp::MulVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n': {
                switch (op[8]) {
                  case '\0':
                    if (strcmp(op, "f32x4.ne") == 0) { return makeBinary(s, BinaryOp::NeVecF32x4); }
                    goto parse_error;
                  case 'a':
                    if (strcmp(op, "f32x4.nearest") == 0) { return makeUnary(s, UnaryOp::NearestVecF32x4); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "f32x4.neg") == 0) { return makeUnary(s, UnaryOp::NegVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'p': {
                switch (op[8]) {
                  case 'a':
                    if (strcmp(op, "f32x4.pmax") == 0) { return makeBinary(s, BinaryOp::PMaxVecF32x4); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f32x4.pmin") == 0) { return makeBinary(s, BinaryOp::PMinVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'r':
                if (strcmp(op, "f32x4.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecF32x4, 4); }
                goto parse_error;
              case 's': {
                switch (op[7]) {
                  case 'p':
                    if (strcmp(op, "f32x4.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecF32x4); }
                    goto parse_error;
                  case 'q':
                    if (strcmp(op, "f32x4.sqrt") == 0) { return makeUnary(s, UnaryOp::SqrtVecF32x4); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f32x4.sub") == 0) { return makeBinary(s, BinaryOp::SubVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't':
                if (strcmp(op, "f32x4.trunc") == 0) { return makeUnary(s, UnaryOp::TruncVecF32x4); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case '6': {
        switch (op[3]) {
          case '.': {
            switch (op[4]) {
              case 'a': {
                switch (op[5]) {
                  case 'b':
                    if (strcmp(op, "f64.abs") == 0) { return makeUnary(s, UnaryOp::AbsFloat64); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "f64.add") == 0) { return makeBinary(s, BinaryOp::AddFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'c': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f64.ceil") == 0) { return makeUnary(s, UnaryOp::CeilFloat64); }
                    goto parse_error;
                  case 'o': {
                    switch (op[6]) {
                      case 'n': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "f64.const") == 0) { return makeConst(s, Type::f64); }
                            goto parse_error;
                          case 'v': {
                            switch (op[13]) {
                              case '3': {
                                switch (op[16]) {
                                  case 's':
                                    if (strcmp(op, "f64.convert_i32_s") == 0) { return makeUnary(s, UnaryOp::ConvertSInt32ToFloat64); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "f64.convert_i32_u") == 0) { return makeUnary(s, UnaryOp::ConvertUInt32ToFloat64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case '6': {
                                switch (op[16]) {
                                  case 's':
                                    if (strcmp(op, "f64.convert_i64_s") == 0) { return makeUnary(s, UnaryOp::ConvertSInt64ToFloat64); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "f64.convert_i64_u") == 0) { return makeUnary(s, UnaryOp::ConvertUInt64ToFloat64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'p':
                        if (strcmp(op, "f64.copysign") == 0) { return makeBinary(s, BinaryOp::CopySignFloat64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'd':
                if (strcmp(op, "f64.div") == 0) { return makeBinary(s, BinaryOp::DivFloat64); }
                goto parse_error;
              case 'e':
                if (strcmp(op, "f64.eq") == 0) { return makeBinary(s, BinaryOp::EqFloat64); }
                goto parse_error;
              case 'f':
                if (strcmp(op, "f64.floor") == 0) { return makeUnary(s, UnaryOp::FloorFloat64); }
                goto parse_error;
              case 'g': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f64.ge") == 0) { return makeBinary(s, BinaryOp::GeFloat64); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f64.gt") == 0) { return makeBinary(s, BinaryOp::GtFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[5]) {
                  case 'e':
                    if (strcmp(op, "f64.le") == 0) { return makeBinary(s, BinaryOp::LeFloat64); }
                    goto parse_error;
                  case 'o':
                    if (strcmp(op, "f64.load") == 0) { return makeLoad(s, Type::f64, /*isAtomic=*/false); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f64.lt") == 0) { return makeBinary(s, BinaryOp::LtFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'm': {
                switch (op[5]) {
                  case 'a':
                    if (strcmp(op, "f64.max") == 0) { return makeBinary(s, BinaryOp::MaxFloat64); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f64.min") == 0) { return makeBinary(s, BinaryOp::MinFloat64); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f64.mul") == 0) { return makeBinary(s, BinaryOp::MulFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n': {
                switch (op[6]) {
                  case '\0':
                    if (strcmp(op, "f64.ne") == 0) { return makeBinary(s, BinaryOp::NeFloat64); }
                    goto parse_error;
                  case 'a':
                    if (strcmp(op, "f64.nearest") == 0) { return makeUnary(s, UnaryOp::NearestFloat64); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "f64.neg") == 0) { return makeUnary(s, UnaryOp::NegFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'p':
                if (strcmp(op, "f64.promote_f32") == 0) { return makeUnary(s, UnaryOp::PromoteFloat32); }
                goto parse_error;
              case 'r':
                if (strcmp(op, "f64.reinterpret_i64") == 0) { return makeUnary(s, UnaryOp::ReinterpretInt64); }
                goto parse_error;
              case 's': {
                switch (op[5]) {
                  case 'q':
                    if (strcmp(op, "f64.sqrt") == 0) { return makeUnary(s, UnaryOp::SqrtFloat64); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f64.store") == 0) { return makeStore(s, Type::f64, /*isAtomic=*/false); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f64.sub") == 0) { return makeBinary(s, BinaryOp::SubFloat64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't':
                if (strcmp(op, "f64.trunc") == 0) { return makeUnary(s, UnaryOp::TruncFloat64); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'x': {
            switch (op[6]) {
              case 'a': {
                switch (op[7]) {
                  case 'b':
                    if (strcmp(op, "f64x2.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecF64x2); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "f64x2.add") == 0) { return makeBinary(s, BinaryOp::AddVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'c': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f64x2.ceil") == 0) { return makeUnary(s, UnaryOp::CeilVecF64x2); }
                    goto parse_error;
                  case 'o': {
                    switch (op[24]) {
                      case 's':
                        if (strcmp(op, "f64x2.convert_low_i32x4_s") == 0) { return makeUnary(s, UnaryOp::ConvertLowSVecI32x4ToVecF64x2); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "f64x2.convert_low_i32x4_u") == 0) { return makeUnary(s, UnaryOp::ConvertLowUVecI32x4ToVecF64x2); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'd':
                if (strcmp(op, "f64x2.div") == 0) { return makeBinary(s, BinaryOp::DivVecF64x2); }
                goto parse_error;
              case 'e': {
                switch (op[7]) {
                  case 'q':
                    if (strcmp(op, "f64x2.eq") == 0) { return makeBinary(s, BinaryOp::EqVecF64x2); }
                    goto parse_error;
                  case 'x':
                    if (strcmp(op, "f64x2.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecF64x2, 2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'f':
                if (strcmp(op, "f64x2.floor") == 0) { return makeUnary(s, UnaryOp::FloorVecF64x2); }
                goto parse_error;
              case 'g': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f64x2.ge") == 0) { return makeBinary(s, BinaryOp::GeVecF64x2); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f64x2.gt") == 0) { return makeBinary(s, BinaryOp::GtVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "f64x2.le") == 0) { return makeBinary(s, BinaryOp::LeVecF64x2); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "f64x2.lt") == 0) { return makeBinary(s, BinaryOp::LtVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'm': {
                switch (op[7]) {
                  case 'a':
                    if (strcmp(op, "f64x2.max") == 0) { return makeBinary(s, BinaryOp::MaxVecF64x2); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "f64x2.min") == 0) { return makeBinary(s, BinaryOp::MinVecF64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f64x2.mul") == 0) { return makeBinary(s, BinaryOp::MulVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n': {
                switch (op[8]) {
                  case '\0':
                    if (strcmp(op, "f64x2.ne") == 0) { return makeBinary(s, BinaryOp::NeVecF64x2); }
                    goto parse_error;
                  case 'a':
                    if (strcmp(op, "f64x2.nearest") == 0) { return makeUnary(s, UnaryOp::NearestVecF64x2); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "f64x2.neg") == 0) { return makeUnary(s, UnaryOp::NegVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'p': {
                switch (op[7]) {
                  case 'm': {
                    switch (op[8]) {
                      case 'a':
                        if (strcmp(op, "f64x2.pmax") == 0) { return makeBinary(s, BinaryOp::PMaxVecF64x2); }
                        goto parse_error;
                      case 'i':
                        if (strcmp(op, "f64x2.pmin") == 0) { return makeBinary(s, BinaryOp::PMinVecF64x2); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'r':
                    if (strcmp(op, "f64x2.promote_low_f32x4") == 0) { return makeUnary(s, UnaryOp::PromoteLowVecF32x4ToVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'r':
                if (strcmp(op, "f64x2.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecF64x2, 2); }
                goto parse_error;
              case 's': {
                switch (op[7]) {
                  case 'p':
                    if (strcmp(op, "f64x2.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecF64x2); }
                    goto parse_error;
                  case 'q':
                    if (strcmp(op, "f64x2.sqrt") == 0) { return makeUnary(s, UnaryOp::SqrtVecF64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f64x2.sub") == 0) { return makeBinary(s, BinaryOp::SubVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't':
                if (strcmp(op, "f64x2.trunc") == 0) { return makeUnary(s, UnaryOp::TruncVecF64x2); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 'g': {
    switch (op[7]) {
      case 'g':
        if (strcmp(op, "global.get") == 0) { return makeGlobalGet(s); }
        goto parse_error;
      case 's':
        if (strcmp(op, "global.set") == 0) { return makeGlobalSet(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'i': {
    switch (op[1]) {
      case '1': {
        switch (op[6]) {
          case 'a': {
            switch (op[7]) {
              case 'b':
                if (strcmp(op, "i16x8.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecI16x8); }
                goto parse_error;
              case 'd': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i16x8.add") == 0) { return makeBinary(s, BinaryOp::AddVecI16x8); }
                    goto parse_error;
                  case '_': {
                    switch (op[14]) {
                      case 's':
                        if (strcmp(op, "i16x8.add_sat_s") == 0) { return makeBinary(s, BinaryOp::AddSatSVecI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.add_sat_u") == 0) { return makeBinary(s, BinaryOp::AddSatUVecI16x8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'l':
                if (strcmp(op, "i16x8.all_true") == 0) { return makeUnary(s, UnaryOp::AllTrueVecI16x8); }
                goto parse_error;
              case 'v':
                if (strcmp(op, "i16x8.avgr_u") == 0) { return makeBinary(s, BinaryOp::AvgrUVecI16x8); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'b':
            if (strcmp(op, "i16x8.bitmask") == 0) { return makeUnary(s, UnaryOp::BitmaskVecI16x8); }
            goto parse_error;
          case 'e': {
            switch (op[7]) {
              case 'q':
                if (strcmp(op, "i16x8.eq") == 0) { return makeBinary(s, BinaryOp::EqVecI16x8); }
                goto parse_error;
              case 'x': {
                switch (op[9]) {
                  case 'a': {
                    switch (op[28]) {
                      case 's':
                        if (strcmp(op, "i16x8.extadd_pairwise_i8x16_s") == 0) { return makeUnary(s, UnaryOp::ExtAddPairwiseSVecI8x16ToI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.extadd_pairwise_i8x16_u") == 0) { return makeUnary(s, UnaryOp::ExtAddPairwiseUVecI8x16ToI16x8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'e': {
                    switch (op[13]) {
                      case 'h': {
                        switch (op[24]) {
                          case 's':
                            if (strcmp(op, "i16x8.extend_high_i8x16_s") == 0) { return makeUnary(s, UnaryOp::ExtendHighSVecI8x16ToVecI16x8); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i16x8.extend_high_i8x16_u") == 0) { return makeUnary(s, UnaryOp::ExtendHighUVecI8x16ToVecI16x8); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'l': {
                        switch (op[23]) {
                          case 's':
                            if (strcmp(op, "i16x8.extend_low_i8x16_s") == 0) { return makeUnary(s, UnaryOp::ExtendLowSVecI8x16ToVecI16x8); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i16x8.extend_low_i8x16_u") == 0) { return makeUnary(s, UnaryOp::ExtendLowUVecI8x16ToVecI16x8); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'm': {
                    switch (op[13]) {
                      case 'h': {
                        switch (op[24]) {
                          case 's':
                            if (strcmp(op, "i16x8.extmul_high_i8x16_s") == 0) { return makeBinary(s, BinaryOp::ExtMulHighSVecI16x8); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i16x8.extmul_high_i8x16_u") == 0) { return makeBinary(s, BinaryOp::ExtMulHighUVecI16x8); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'l': {
                        switch (op[23]) {
                          case 's':
                            if (strcmp(op, "i16x8.extmul_low_i8x16_s") == 0) { return makeBinary(s, BinaryOp::ExtMulLowSVecI16x8); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i16x8.extmul_low_i8x16_u") == 0) { return makeBinary(s, BinaryOp::ExtMulLowUVecI16x8); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'r': {
                    switch (op[19]) {
                      case 's':
                        if (strcmp(op, "i16x8.extract_lane_s") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneSVecI16x8, 8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.extract_lane_u") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneUVecI16x8, 8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'g': {
            switch (op[7]) {
              case 'e': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i16x8.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.ge_u") == 0) { return makeBinary(s, BinaryOp::GeUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i16x8.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.gt_u") == 0) { return makeBinary(s, BinaryOp::GtUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'l': {
            switch (op[7]) {
              case 'e': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i16x8.le_s") == 0) { return makeBinary(s, BinaryOp::LeSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.le_u") == 0) { return makeBinary(s, BinaryOp::LeUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i16x8.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.lt_u") == 0) { return makeBinary(s, BinaryOp::LtUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'm': {
            switch (op[7]) {
              case 'a': {
                switch (op[10]) {
                  case 's':
                    if (strcmp(op, "i16x8.max_s") == 0) { return makeBinary(s, BinaryOp::MaxSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.max_u") == 0) { return makeBinary(s, BinaryOp::MaxUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'i': {
                switch (op[10]) {
                  case 's':
                    if (strcmp(op, "i16x8.min_s") == 0) { return makeBinary(s, BinaryOp::MinSVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.min_u") == 0) { return makeBinary(s, BinaryOp::MinUVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'u':
                if (strcmp(op, "i16x8.mul") == 0) { return makeBinary(s, BinaryOp::MulVecI16x8); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'n': {
            switch (op[7]) {
              case 'a': {
                switch (op[19]) {
                  case 's':
                    if (strcmp(op, "i16x8.narrow_i32x4_s") == 0) { return makeBinary(s, BinaryOp::NarrowSVecI32x4ToVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.narrow_i32x4_u") == 0) { return makeBinary(s, BinaryOp::NarrowUVecI32x4ToVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e': {
                switch (op[8]) {
                  case '\0':
                    if (strcmp(op, "i16x8.ne") == 0) { return makeBinary(s, BinaryOp::NeVecI16x8); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "i16x8.neg") == 0) { return makeUnary(s, UnaryOp::NegVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'q':
            if (strcmp(op, "i16x8.q15mulr_sat_s") == 0) { return makeBinary(s, BinaryOp::Q15MulrSatSVecI16x8); }
            goto parse_error;
          case 'r':
            if (strcmp(op, "i16x8.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecI16x8, 8); }
            goto parse_error;
          case 's': {
            switch (op[7]) {
              case 'h': {
                switch (op[8]) {
                  case 'l':
                    if (strcmp(op, "i16x8.shl") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShlVecI16x8); }
                    goto parse_error;
                  case 'r': {
                    switch (op[10]) {
                      case 's':
                        if (strcmp(op, "i16x8.shr_s") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrSVecI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.shr_u") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrUVecI16x8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'p':
                if (strcmp(op, "i16x8.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecI16x8); }
                goto parse_error;
              case 'u': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i16x8.sub") == 0) { return makeBinary(s, BinaryOp::SubVecI16x8); }
                    goto parse_error;
                  case '_': {
                    switch (op[14]) {
                      case 's':
                        if (strcmp(op, "i16x8.sub_sat_s") == 0) { return makeBinary(s, BinaryOp::SubSatSVecI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.sub_sat_u") == 0) { return makeBinary(s, BinaryOp::SubSatUVecI16x8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case '3': {
        switch (op[2]) {
          case '1': {
            switch (op[4]) {
              case 'g': {
                switch (op[8]) {
                  case 's':
                    if (strcmp(op, "i31.get_s") == 0) { return makeI31Get(s, true); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i31.get_u") == 0) { return makeI31Get(s, false); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n':
                if (strcmp(op, "i31.new") == 0) { return makeI31New(s); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case '2': {
            switch (op[3]) {
              case '.': {
                switch (op[4]) {
                  case 'a': {
                    switch (op[5]) {
                      case 'd':
                        if (strcmp(op, "i32.add") == 0) { return makeBinary(s, BinaryOp::AddInt32); }
                        goto parse_error;
                      case 'n':
                        if (strcmp(op, "i32.and") == 0) { return makeBinary(s, BinaryOp::AndInt32); }
                        goto parse_error;
                      case 't': {
                        switch (op[11]) {
                          case 'l': {
                            switch (op[15]) {
                              case '\0':
                                if (strcmp(op, "i32.atomic.load") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              case '1':
                                if (strcmp(op, "i32.atomic.load16_u") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              case '8':
                                if (strcmp(op, "i32.atomic.load8_u") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case 'r': {
                            switch (op[14]) {
                              case '.': {
                                switch (op[15]) {
                                  case 'a': {
                                    switch (op[16]) {
                                      case 'd':
                                        if (strcmp(op, "i32.atomic.rmw.add") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'n':
                                        if (strcmp(op, "i32.atomic.rmw.and") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  case 'c':
                                    if (strcmp(op, "i32.atomic.rmw.cmpxchg") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i32.atomic.rmw.or") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 's':
                                    if (strcmp(op, "i32.atomic.rmw.sub") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'x': {
                                    switch (op[16]) {
                                      case 'c':
                                        if (strcmp(op, "i32.atomic.rmw.xchg") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'o':
                                        if (strcmp(op, "i32.atomic.rmw.xor") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  default: goto parse_error;
                                }
                              }
                              case '1': {
                                switch (op[17]) {
                                  case 'a': {
                                    switch (op[18]) {
                                      case 'd':
                                        if (strcmp(op, "i32.atomic.rmw16.add_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'n':
                                        if (strcmp(op, "i32.atomic.rmw16.and_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  case 'c':
                                    if (strcmp(op, "i32.atomic.rmw16.cmpxchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i32.atomic.rmw16.or_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 's':
                                    if (strcmp(op, "i32.atomic.rmw16.sub_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'x': {
                                    switch (op[18]) {
                                      case 'c':
                                        if (strcmp(op, "i32.atomic.rmw16.xchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'o':
                                        if (strcmp(op, "i32.atomic.rmw16.xor_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  default: goto parse_error;
                                }
                              }
                              case '8': {
                                switch (op[16]) {
                                  case 'a': {
                                    switch (op[17]) {
                                      case 'd':
                                        if (strcmp(op, "i32.atomic.rmw8.add_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'n':
                                        if (strcmp(op, "i32.atomic.rmw8.and_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  case 'c':
                                    if (strcmp(op, "i32.atomic.rmw8.cmpxchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i32.atomic.rmw8.or_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 's':
                                    if (strcmp(op, "i32.atomic.rmw8.sub_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                    goto parse_error;
                                  case 'x': {
                                    switch (op[17]) {
                                      case 'c':
                                        if (strcmp(op, "i32.atomic.rmw8.xchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      case 'o':
                                        if (strcmp(op, "i32.atomic.rmw8.xor_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i32); }
                                        goto parse_error;
                                      default: goto parse_error;
                                    }
                                  }
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case 's': {
                            switch (op[16]) {
                              case '\0':
                                if (strcmp(op, "i32.atomic.store") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              case '1':
                                if (strcmp(op, "i32.atomic.store16") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              case '8':
                                if (strcmp(op, "i32.atomic.store8") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/true); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'c': {
                    switch (op[5]) {
                      case 'l':
                        if (strcmp(op, "i32.clz") == 0) { return makeUnary(s, UnaryOp::ClzInt32); }
                        goto parse_error;
                      case 'o':
                        if (strcmp(op, "i32.const") == 0) { return makeConst(s, Type::i32); }
                        goto parse_error;
                      case 't':
                        if (strcmp(op, "i32.ctz") == 0) { return makeUnary(s, UnaryOp::CtzInt32); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'd': {
                    switch (op[8]) {
                      case 's':
                        if (strcmp(op, "i32.div_s") == 0) { return makeBinary(s, BinaryOp::DivSInt32); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i32.div_u") == 0) { return makeBinary(s, BinaryOp::DivUInt32); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'e': {
                    switch (op[5]) {
                      case 'q': {
                        switch (op[6]) {
                          case '\0':
                            if (strcmp(op, "i32.eq") == 0) { return makeBinary(s, BinaryOp::EqInt32); }
                            goto parse_error;
                          case 'z':
                            if (strcmp(op, "i32.eqz") == 0) { return makeUnary(s, UnaryOp::EqZInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'x': {
                        switch (op[10]) {
                          case '1':
                            if (strcmp(op, "i32.extend16_s") == 0) { return makeUnary(s, UnaryOp::ExtendS16Int32); }
                            goto parse_error;
                          case '8':
                            if (strcmp(op, "i32.extend8_s") == 0) { return makeUnary(s, UnaryOp::ExtendS8Int32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'g': {
                    switch (op[5]) {
                      case 'e': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "i32.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSInt32); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32.ge_u") == 0) { return makeBinary(s, BinaryOp::GeUInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 't': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "i32.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSInt32); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32.gt_u") == 0) { return makeBinary(s, BinaryOp::GtUInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'l': {
                    switch (op[5]) {
                      case 'e': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "i32.le_s") == 0) { return makeBinary(s, BinaryOp::LeSInt32); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32.le_u") == 0) { return makeBinary(s, BinaryOp::LeUInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'o': {
                        switch (op[8]) {
                          case '\0':
                            if (strcmp(op, "i32.load") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/false); }
                            goto parse_error;
                          case '1': {
                            switch (op[11]) {
                              case 's':
                                if (strcmp(op, "i32.load16_s") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/false); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.load16_u") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/false); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case '8': {
                            switch (op[10]) {
                              case 's':
                                if (strcmp(op, "i32.load8_s") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/false); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.load8_u") == 0) { return makeLoad(s, Type::i32, /*isAtomic=*/false); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 't': {
                        switch (op[7]) {
                          case 's':
                            if (strcmp(op, "i32.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSInt32); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32.lt_u") == 0) { return makeBinary(s, BinaryOp::LtUInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'm':
                    if (strcmp(op, "i32.mul") == 0) { return makeBinary(s, BinaryOp::MulInt32); }
                    goto parse_error;
                  case 'n':
                    if (strcmp(op, "i32.ne") == 0) { return makeBinary(s, BinaryOp::NeInt32); }
                    goto parse_error;
                  case 'o':
                    if (strcmp(op, "i32.or") == 0) { return makeBinary(s, BinaryOp::OrInt32); }
                    goto parse_error;
                  case 'p':
                    if (strcmp(op, "i32.popcnt") == 0) { return makeUnary(s, UnaryOp::PopcntInt32); }
                    goto parse_error;
                  case 'r': {
                    switch (op[5]) {
                      case 'e': {
                        switch (op[6]) {
                          case 'i':
                            if (strcmp(op, "i32.reinterpret_f32") == 0) { return makeUnary(s, UnaryOp::ReinterpretFloat32); }
                            goto parse_error;
                          case 'm': {
                            switch (op[8]) {
                              case 's':
                                if (strcmp(op, "i32.rem_s") == 0) { return makeBinary(s, BinaryOp::RemSInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.rem_u") == 0) { return makeBinary(s, BinaryOp::RemUInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'o': {
                        switch (op[7]) {
                          case 'l':
                            if (strcmp(op, "i32.rotl") == 0) { return makeBinary(s, BinaryOp::RotLInt32); }
                            goto parse_error;
                          case 'r':
                            if (strcmp(op, "i32.rotr") == 0) { return makeBinary(s, BinaryOp::RotRInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 's': {
                    switch (op[5]) {
                      case 'h': {
                        switch (op[6]) {
                          case 'l':
                            if (strcmp(op, "i32.shl") == 0) { return makeBinary(s, BinaryOp::ShlInt32); }
                            goto parse_error;
                          case 'r': {
                            switch (op[8]) {
                              case 's':
                                if (strcmp(op, "i32.shr_s") == 0) { return makeBinary(s, BinaryOp::ShrSInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.shr_u") == 0) { return makeBinary(s, BinaryOp::ShrUInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 't': {
                        switch (op[9]) {
                          case '\0':
                            if (strcmp(op, "i32.store") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/false); }
                            goto parse_error;
                          case '1':
                            if (strcmp(op, "i32.store16") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/false); }
                            goto parse_error;
                          case '8':
                            if (strcmp(op, "i32.store8") == 0) { return makeStore(s, Type::i32, /*isAtomic=*/false); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'u':
                        if (strcmp(op, "i32.sub") == 0) { return makeBinary(s, BinaryOp::SubInt32); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 't': {
                    switch (op[10]) {
                      case 'f': {
                        switch (op[11]) {
                          case '3': {
                            switch (op[14]) {
                              case 's':
                                if (strcmp(op, "i32.trunc_f32_s") == 0) { return makeUnary(s, UnaryOp::TruncSFloat32ToInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.trunc_f32_u") == 0) { return makeUnary(s, UnaryOp::TruncUFloat32ToInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case '6': {
                            switch (op[14]) {
                              case 's':
                                if (strcmp(op, "i32.trunc_f64_s") == 0) { return makeUnary(s, UnaryOp::TruncSFloat64ToInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.trunc_f64_u") == 0) { return makeUnary(s, UnaryOp::TruncUFloat64ToInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 's': {
                        switch (op[15]) {
                          case '3': {
                            switch (op[18]) {
                              case 's':
                                if (strcmp(op, "i32.trunc_sat_f32_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSFloat32ToInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.trunc_sat_f32_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUFloat32ToInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case '6': {
                            switch (op[18]) {
                              case 's':
                                if (strcmp(op, "i32.trunc_sat_f64_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSFloat64ToInt32); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32.trunc_sat_f64_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUFloat64ToInt32); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'w':
                    if (strcmp(op, "i32.wrap_i64") == 0) { return makeUnary(s, UnaryOp::WrapInt64); }
                    goto parse_error;
                  case 'x':
                    if (strcmp(op, "i32.xor") == 0) { return makeBinary(s, BinaryOp::XorInt32); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'x': {
                switch (op[6]) {
                  case 'a': {
                    switch (op[7]) {
                      case 'b':
                        if (strcmp(op, "i32x4.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecI32x4); }
                        goto parse_error;
                      case 'd':
                        if (strcmp(op, "i32x4.add") == 0) { return makeBinary(s, BinaryOp::AddVecI32x4); }
                        goto parse_error;
                      case 'l':
                        if (strcmp(op, "i32x4.all_true") == 0) { return makeUnary(s, UnaryOp::AllTrueVecI32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'b':
                    if (strcmp(op, "i32x4.bitmask") == 0) { return makeUnary(s, UnaryOp::BitmaskVecI32x4); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "i32x4.dot_i16x8_s") == 0) { return makeBinary(s, BinaryOp::DotSVecI16x8ToVecI32x4); }
                    goto parse_error;
                  case 'e': {
                    switch (op[7]) {
                      case 'q':
                        if (strcmp(op, "i32x4.eq") == 0) { return makeBinary(s, BinaryOp::EqVecI32x4); }
                        goto parse_error;
                      case 'x': {
                        switch (op[9]) {
                          case 'a': {
                            switch (op[28]) {
                              case 's':
                                if (strcmp(op, "i32x4.extadd_pairwise_i16x8_s") == 0) { return makeUnary(s, UnaryOp::ExtAddPairwiseSVecI16x8ToI32x4); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32x4.extadd_pairwise_i16x8_u") == 0) { return makeUnary(s, UnaryOp::ExtAddPairwiseUVecI16x8ToI32x4); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case 'e': {
                            switch (op[13]) {
                              case 'h': {
                                switch (op[24]) {
                                  case 's':
                                    if (strcmp(op, "i32x4.extend_high_i16x8_s") == 0) { return makeUnary(s, UnaryOp::ExtendHighSVecI16x8ToVecI32x4); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "i32x4.extend_high_i16x8_u") == 0) { return makeUnary(s, UnaryOp::ExtendHighUVecI16x8ToVecI32x4); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'l': {
                                switch (op[23]) {
                                  case 's':
                                    if (strcmp(op, "i32x4.extend_low_i16x8_s") == 0) { return makeUnary(s, UnaryOp::ExtendLowSVecI16x8ToVecI32x4); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "i32x4.extend_low_i16x8_u") == 0) { return makeUnary(s, UnaryOp::ExtendLowUVecI16x8ToVecI32x4); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case 'm': {
                            switch (op[13]) {
                              case 'h': {
                                switch (op[24]) {
                                  case 's':
                                    if (strcmp(op, "i32x4.extmul_high_i16x8_s") == 0) { return makeBinary(s, BinaryOp::ExtMulHighSVecI32x4); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "i32x4.extmul_high_i16x8_u") == 0) { return makeBinary(s, BinaryOp::ExtMulHighUVecI32x4); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'l': {
                                switch (op[23]) {
                                  case 's':
                                    if (strcmp(op, "i32x4.extmul_low_i16x8_s") == 0) { return makeBinary(s, BinaryOp::ExtMulLowSVecI32x4); }
                                    goto parse_error;
                                  case 'u':
                                    if (strcmp(op, "i32x4.extmul_low_i16x8_u") == 0) { return makeBinary(s, BinaryOp::ExtMulLowUVecI32x4); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case 'r':
                            if (strcmp(op, "i32x4.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecI32x4, 4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'g': {
                    switch (op[7]) {
                      case 'e': {
                        switch (op[9]) {
                          case 's':
                            if (strcmp(op, "i32x4.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.ge_u") == 0) { return makeBinary(s, BinaryOp::GeUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 't': {
                        switch (op[9]) {
                          case 's':
                            if (strcmp(op, "i32x4.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.gt_u") == 0) { return makeBinary(s, BinaryOp::GtUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'l': {
                    switch (op[7]) {
                      case 'e': {
                        switch (op[9]) {
                          case 's':
                            if (strcmp(op, "i32x4.le_s") == 0) { return makeBinary(s, BinaryOp::LeSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.le_u") == 0) { return makeBinary(s, BinaryOp::LeUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 't': {
                        switch (op[9]) {
                          case 's':
                            if (strcmp(op, "i32x4.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.lt_u") == 0) { return makeBinary(s, BinaryOp::LtUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'm': {
                    switch (op[7]) {
                      case 'a': {
                        switch (op[10]) {
                          case 's':
                            if (strcmp(op, "i32x4.max_s") == 0) { return makeBinary(s, BinaryOp::MaxSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.max_u") == 0) { return makeBinary(s, BinaryOp::MaxUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'i': {
                        switch (op[10]) {
                          case 's':
                            if (strcmp(op, "i32x4.min_s") == 0) { return makeBinary(s, BinaryOp::MinSVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.min_u") == 0) { return makeBinary(s, BinaryOp::MinUVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'u':
                        if (strcmp(op, "i32x4.mul") == 0) { return makeBinary(s, BinaryOp::MulVecI32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'n': {
                    switch (op[8]) {
                      case '\0':
                        if (strcmp(op, "i32x4.ne") == 0) { return makeBinary(s, BinaryOp::NeVecI32x4); }
                        goto parse_error;
                      case 'g':
                        if (strcmp(op, "i32x4.neg") == 0) { return makeUnary(s, UnaryOp::NegVecI32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'r':
                    if (strcmp(op, "i32x4.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecI32x4, 4); }
                    goto parse_error;
                  case 's': {
                    switch (op[7]) {
                      case 'h': {
                        switch (op[8]) {
                          case 'l':
                            if (strcmp(op, "i32x4.shl") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShlVecI32x4); }
                            goto parse_error;
                          case 'r': {
                            switch (op[10]) {
                              case 's':
                                if (strcmp(op, "i32x4.shr_s") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrSVecI32x4); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i32x4.shr_u") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrUVecI32x4); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'p':
                        if (strcmp(op, "i32x4.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecI32x4); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i32x4.sub") == 0) { return makeBinary(s, BinaryOp::SubVecI32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 't': {
                    switch (op[17]) {
                      case '3': {
                        switch (op[22]) {
                          case 's':
                            if (strcmp(op, "i32x4.trunc_sat_f32x4_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSVecF32x4ToVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.trunc_sat_f32x4_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUVecF32x4ToVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case '6': {
                        switch (op[22]) {
                          case 's':
                            if (strcmp(op, "i32x4.trunc_sat_f64x2_s_zero") == 0) { return makeUnary(s, UnaryOp::TruncSatZeroSVecF64x2ToVecI32x4); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i32x4.trunc_sat_f64x2_u_zero") == 0) { return makeUnary(s, UnaryOp::TruncSatZeroUVecF64x2ToVecI32x4); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case '6': {
        switch (op[3]) {
          case '.': {
            switch (op[4]) {
              case 'a': {
                switch (op[5]) {
                  case 'd':
                    if (strcmp(op, "i64.add") == 0) { return makeBinary(s, BinaryOp::AddInt64); }
                    goto parse_error;
                  case 'n':
                    if (strcmp(op, "i64.and") == 0) { return makeBinary(s, BinaryOp::AndInt64); }
                    goto parse_error;
                  case 't': {
                    switch (op[11]) {
                      case 'l': {
                        switch (op[15]) {
                          case '\0':
                            if (strcmp(op, "i64.atomic.load") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '1':
                            if (strcmp(op, "i64.atomic.load16_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '3':
                            if (strcmp(op, "i64.atomic.load32_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '8':
                            if (strcmp(op, "i64.atomic.load8_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case 'r': {
                        switch (op[14]) {
                          case '.': {
                            switch (op[15]) {
                              case 'a': {
                                switch (op[16]) {
                                  case 'd':
                                    if (strcmp(op, "i64.atomic.rmw.add") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'n':
                                    if (strcmp(op, "i64.atomic.rmw.and") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'c':
                                if (strcmp(op, "i64.atomic.rmw.cmpxchg") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'o':
                                if (strcmp(op, "i64.atomic.rmw.or") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 's':
                                if (strcmp(op, "i64.atomic.rmw.sub") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'x': {
                                switch (op[16]) {
                                  case 'c':
                                    if (strcmp(op, "i64.atomic.rmw.xchg") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i64.atomic.rmw.xor") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case '1': {
                            switch (op[17]) {
                              case 'a': {
                                switch (op[18]) {
                                  case 'd':
                                    if (strcmp(op, "i64.atomic.rmw16.add_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'n':
                                    if (strcmp(op, "i64.atomic.rmw16.and_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'c':
                                if (strcmp(op, "i64.atomic.rmw16.cmpxchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'o':
                                if (strcmp(op, "i64.atomic.rmw16.or_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 's':
                                if (strcmp(op, "i64.atomic.rmw16.sub_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'x': {
                                switch (op[18]) {
                                  case 'c':
                                    if (strcmp(op, "i64.atomic.rmw16.xchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i64.atomic.rmw16.xor_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case '3': {
                            switch (op[17]) {
                              case 'a': {
                                switch (op[18]) {
                                  case 'd':
                                    if (strcmp(op, "i64.atomic.rmw32.add_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'n':
                                    if (strcmp(op, "i64.atomic.rmw32.and_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'c':
                                if (strcmp(op, "i64.atomic.rmw32.cmpxchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'o':
                                if (strcmp(op, "i64.atomic.rmw32.or_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 's':
                                if (strcmp(op, "i64.atomic.rmw32.sub_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'x': {
                                switch (op[18]) {
                                  case 'c':
                                    if (strcmp(op, "i64.atomic.rmw32.xchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i64.atomic.rmw32.xor_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          case '8': {
                            switch (op[16]) {
                              case 'a': {
                                switch (op[17]) {
                                  case 'd':
                                    if (strcmp(op, "i64.atomic.rmw8.add_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'n':
                                    if (strcmp(op, "i64.atomic.rmw8.and_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              case 'c':
                                if (strcmp(op, "i64.atomic.rmw8.cmpxchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'o':
                                if (strcmp(op, "i64.atomic.rmw8.or_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 's':
                                if (strcmp(op, "i64.atomic.rmw8.sub_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                goto parse_error;
                              case 'x': {
                                switch (op[17]) {
                                  case 'c':
                                    if (strcmp(op, "i64.atomic.rmw8.xchg_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  case 'o':
                                    if (strcmp(op, "i64.atomic.rmw8.xor_u") == 0) { return makeAtomicRMWOrCmpxchg(s, Type::i64); }
                                    goto parse_error;
                                  default: goto parse_error;
                                }
                              }
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 's': {
                        switch (op[16]) {
                          case '\0':
                            if (strcmp(op, "i64.atomic.store") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '1':
                            if (strcmp(op, "i64.atomic.store16") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '3':
                            if (strcmp(op, "i64.atomic.store32") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          case '8':
                            if (strcmp(op, "i64.atomic.store8") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/true); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'c': {
                switch (op[5]) {
                  case 'l':
                    if (strcmp(op, "i64.clz") == 0) { return makeUnary(s, UnaryOp::ClzInt64); }
                    goto parse_error;
                  case 'o':
                    if (strcmp(op, "i64.const") == 0) { return makeConst(s, Type::i64); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "i64.ctz") == 0) { return makeUnary(s, UnaryOp::CtzInt64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'd': {
                switch (op[8]) {
                  case 's':
                    if (strcmp(op, "i64.div_s") == 0) { return makeBinary(s, BinaryOp::DivSInt64); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i64.div_u") == 0) { return makeBinary(s, BinaryOp::DivUInt64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e': {
                switch (op[5]) {
                  case 'q': {
                    switch (op[6]) {
                      case '\0':
                        if (strcmp(op, "i64.eq") == 0) { return makeBinary(s, BinaryOp::EqInt64); }
                        goto parse_error;
                      case 'z':
                        if (strcmp(op, "i64.eqz") == 0) { return makeUnary(s, UnaryOp::EqZInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'x': {
                    switch (op[10]) {
                      case '1':
                        if (strcmp(op, "i64.extend16_s") == 0) { return makeUnary(s, UnaryOp::ExtendS16Int64); }
                        goto parse_error;
                      case '3':
                        if (strcmp(op, "i64.extend32_s") == 0) { return makeUnary(s, UnaryOp::ExtendS32Int64); }
                        goto parse_error;
                      case '8':
                        if (strcmp(op, "i64.extend8_s") == 0) { return makeUnary(s, UnaryOp::ExtendS8Int64); }
                        goto parse_error;
                      case '_': {
                        switch (op[15]) {
                          case 's':
                            if (strcmp(op, "i64.extend_i32_s") == 0) { return makeUnary(s, UnaryOp::ExtendSInt32); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.extend_i32_u") == 0) { return makeUnary(s, UnaryOp::ExtendUInt32); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'g': {
                switch (op[5]) {
                  case 'e': {
                    switch (op[7]) {
                      case 's':
                        if (strcmp(op, "i64.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSInt64); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i64.ge_u") == 0) { return makeBinary(s, BinaryOp::GeUInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 't': {
                    switch (op[7]) {
                      case 's':
                        if (strcmp(op, "i64.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSInt64); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i64.gt_u") == 0) { return makeBinary(s, BinaryOp::GtUInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[5]) {
                  case 'e': {
                    switch (op[7]) {
                      case 's':
                        if (strcmp(op, "i64.le_s") == 0) { return makeBinary(s, BinaryOp::LeSInt64); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i64.le_u") == 0) { return makeBinary(s, BinaryOp::LeUInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'o': {
                    switch (op[8]) {
                      case '\0':
                        if (strcmp(op, "i64.load") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                        goto parse_error;
                      case '1': {
                        switch (op[11]) {
                          case 's':
                            if (strcmp(op, "i64.load16_s") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.load16_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case '3': {
                        switch (op[11]) {
                          case 's':
                            if (strcmp(op, "i64.load32_s") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.load32_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case '8': {
                        switch (op[10]) {
                          case 's':
                            if (strcmp(op, "i64.load8_s") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.load8_u") == 0) { return makeLoad(s, Type::i64, /*isAtomic=*/false); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 't': {
                    switch (op[7]) {
                      case 's':
                        if (strcmp(op, "i64.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSInt64); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i64.lt_u") == 0) { return makeBinary(s, BinaryOp::LtUInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'm':
                if (strcmp(op, "i64.mul") == 0) { return makeBinary(s, BinaryOp::MulInt64); }
                goto parse_error;
              case 'n':
                if (strcmp(op, "i64.ne") == 0) { return makeBinary(s, BinaryOp::NeInt64); }
                goto parse_error;
              case 'o':
                if (strcmp(op, "i64.or") == 0) { return makeBinary(s, BinaryOp::OrInt64); }
                goto parse_error;
              case 'p':
                if (strcmp(op, "i64.popcnt") == 0) { return makeUnary(s, UnaryOp::PopcntInt64); }
                goto parse_error;
              case 'r': {
                switch (op[5]) {
                  case 'e': {
                    switch (op[6]) {
                      case 'i':
                        if (strcmp(op, "i64.reinterpret_f64") == 0) { return makeUnary(s, UnaryOp::ReinterpretFloat64); }
                        goto parse_error;
                      case 'm': {
                        switch (op[8]) {
                          case 's':
                            if (strcmp(op, "i64.rem_s") == 0) { return makeBinary(s, BinaryOp::RemSInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.rem_u") == 0) { return makeBinary(s, BinaryOp::RemUInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'o': {
                    switch (op[7]) {
                      case 'l':
                        if (strcmp(op, "i64.rotl") == 0) { return makeBinary(s, BinaryOp::RotLInt64); }
                        goto parse_error;
                      case 'r':
                        if (strcmp(op, "i64.rotr") == 0) { return makeBinary(s, BinaryOp::RotRInt64); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 's': {
                switch (op[5]) {
                  case 'h': {
                    switch (op[6]) {
                      case 'l':
                        if (strcmp(op, "i64.shl") == 0) { return makeBinary(s, BinaryOp::ShlInt64); }
                        goto parse_error;
                      case 'r': {
                        switch (op[8]) {
                          case 's':
                            if (strcmp(op, "i64.shr_s") == 0) { return makeBinary(s, BinaryOp::ShrSInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.shr_u") == 0) { return makeBinary(s, BinaryOp::ShrUInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 't': {
                    switch (op[9]) {
                      case '\0':
                        if (strcmp(op, "i64.store") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/false); }
                        goto parse_error;
                      case '1':
                        if (strcmp(op, "i64.store16") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/false); }
                        goto parse_error;
                      case '3':
                        if (strcmp(op, "i64.store32") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/false); }
                        goto parse_error;
                      case '8':
                        if (strcmp(op, "i64.store8") == 0) { return makeStore(s, Type::i64, /*isAtomic=*/false); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'u':
                    if (strcmp(op, "i64.sub") == 0) { return makeBinary(s, BinaryOp::SubInt64); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't': {
                switch (op[10]) {
                  case 'f': {
                    switch (op[11]) {
                      case '3': {
                        switch (op[14]) {
                          case 's':
                            if (strcmp(op, "i64.trunc_f32_s") == 0) { return makeUnary(s, UnaryOp::TruncSFloat32ToInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.trunc_f32_u") == 0) { return makeUnary(s, UnaryOp::TruncUFloat32ToInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case '6': {
                        switch (op[14]) {
                          case 's':
                            if (strcmp(op, "i64.trunc_f64_s") == 0) { return makeUnary(s, UnaryOp::TruncSFloat64ToInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.trunc_f64_u") == 0) { return makeUnary(s, UnaryOp::TruncUFloat64ToInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 's': {
                    switch (op[15]) {
                      case '3': {
                        switch (op[18]) {
                          case 's':
                            if (strcmp(op, "i64.trunc_sat_f32_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSFloat32ToInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.trunc_sat_f32_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUFloat32ToInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      case '6': {
                        switch (op[18]) {
                          case 's':
                            if (strcmp(op, "i64.trunc_sat_f64_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSFloat64ToInt64); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64.trunc_sat_f64_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUFloat64ToInt64); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'x':
                if (strcmp(op, "i64.xor") == 0) { return makeBinary(s, BinaryOp::XorInt64); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'x': {
            switch (op[6]) {
              case 'a': {
                switch (op[7]) {
                  case 'b':
                    if (strcmp(op, "i64x2.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecI64x2); }
                    goto parse_error;
                  case 'd':
                    if (strcmp(op, "i64x2.add") == 0) { return makeBinary(s, BinaryOp::AddVecI64x2); }
                    goto parse_error;
                  case 'l':
                    if (strcmp(op, "i64x2.all_true") == 0) { return makeUnary(s, UnaryOp::AllTrueVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'b':
                if (strcmp(op, "i64x2.bitmask") == 0) { return makeUnary(s, UnaryOp::BitmaskVecI64x2); }
                goto parse_error;
              case 'e': {
                switch (op[7]) {
                  case 'q':
                    if (strcmp(op, "i64x2.eq") == 0) { return makeBinary(s, BinaryOp::EqVecI64x2); }
                    goto parse_error;
                  case 'x': {
                    switch (op[9]) {
                      case 'e': {
                        switch (op[13]) {
                          case 'h': {
                            switch (op[24]) {
                              case 's':
                                if (strcmp(op, "i64x2.extend_high_i32x4_s") == 0) { return makeUnary(s, UnaryOp::ExtendHighSVecI32x4ToVecI64x2); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i64x2.extend_high_i32x4_u") == 0) { return makeUnary(s, UnaryOp::ExtendHighUVecI32x4ToVecI64x2); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case 'l': {
                            switch (op[23]) {
                              case 's':
                                if (strcmp(op, "i64x2.extend_low_i32x4_s") == 0) { return makeUnary(s, UnaryOp::ExtendLowSVecI32x4ToVecI64x2); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i64x2.extend_low_i32x4_u") == 0) { return makeUnary(s, UnaryOp::ExtendLowUVecI32x4ToVecI64x2); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'm': {
                        switch (op[13]) {
                          case 'h': {
                            switch (op[24]) {
                              case 's':
                                if (strcmp(op, "i64x2.extmul_high_i32x4_s") == 0) { return makeBinary(s, BinaryOp::ExtMulHighSVecI64x2); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i64x2.extmul_high_i32x4_u") == 0) { return makeBinary(s, BinaryOp::ExtMulHighUVecI64x2); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          case 'l': {
                            switch (op[23]) {
                              case 's':
                                if (strcmp(op, "i64x2.extmul_low_i32x4_s") == 0) { return makeBinary(s, BinaryOp::ExtMulLowSVecI64x2); }
                                goto parse_error;
                              case 'u':
                                if (strcmp(op, "i64x2.extmul_low_i32x4_u") == 0) { return makeBinary(s, BinaryOp::ExtMulLowUVecI64x2); }
                                goto parse_error;
                              default: goto parse_error;
                            }
                          }
                          default: goto parse_error;
                        }
                      }
                      case 'r':
                        if (strcmp(op, "i64x2.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecI64x2, 2); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'g': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "i64x2.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSVecI64x2); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "i64x2.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[7]) {
                  case 'e':
                    if (strcmp(op, "i64x2.le_s") == 0) { return makeBinary(s, BinaryOp::LeSVecI64x2); }
                    goto parse_error;
                  case 't':
                    if (strcmp(op, "i64x2.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'm':
                if (strcmp(op, "i64x2.mul") == 0) { return makeBinary(s, BinaryOp::MulVecI64x2); }
                goto parse_error;
              case 'n': {
                switch (op[8]) {
                  case '\0':
                    if (strcmp(op, "i64x2.ne") == 0) { return makeBinary(s, BinaryOp::NeVecI64x2); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "i64x2.neg") == 0) { return makeUnary(s, UnaryOp::NegVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'r':
                if (strcmp(op, "i64x2.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecI64x2, 2); }
                goto parse_error;
              case 's': {
                switch (op[7]) {
                  case 'h': {
                    switch (op[8]) {
                      case 'l':
                        if (strcmp(op, "i64x2.shl") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShlVecI64x2); }
                        goto parse_error;
                      case 'r': {
                        switch (op[10]) {
                          case 's':
                            if (strcmp(op, "i64x2.shr_s") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrSVecI64x2); }
                            goto parse_error;
                          case 'u':
                            if (strcmp(op, "i64x2.shr_u") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrUVecI64x2); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  case 'p':
                    if (strcmp(op, "i64x2.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecI64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i64x2.sub") == 0) { return makeBinary(s, BinaryOp::SubVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case '8': {
        switch (op[6]) {
          case 'a': {
            switch (op[7]) {
              case 'b':
                if (strcmp(op, "i8x16.abs") == 0) { return makeUnary(s, UnaryOp::AbsVecI8x16); }
                goto parse_error;
              case 'd': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i8x16.add") == 0) { return makeBinary(s, BinaryOp::AddVecI8x16); }
                    goto parse_error;
                  case '_': {
                    switch (op[14]) {
                      case 's':
                        if (strcmp(op, "i8x16.add_sat_s") == 0) { return makeBinary(s, BinaryOp::AddSatSVecI8x16); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i8x16.add_sat_u") == 0) { return makeBinary(s, BinaryOp::AddSatUVecI8x16); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'l':
                if (strcmp(op, "i8x16.all_true") == 0) { return makeUnary(s, UnaryOp::AllTrueVecI8x16); }
                goto parse_error;
              case 'v':
                if (strcmp(op, "i8x16.avgr_u") == 0) { return makeBinary(s, BinaryOp::AvgrUVecI8x16); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'b':
            if (strcmp(op, "i8x16.bitmask") == 0) { return makeUnary(s, UnaryOp::BitmaskVecI8x16); }
            goto parse_error;
          case 'e': {
            switch (op[7]) {
              case 'q':
                if (strcmp(op, "i8x16.eq") == 0) { return makeBinary(s, BinaryOp::EqVecI8x16); }
                goto parse_error;
              case 'x': {
                switch (op[19]) {
                  case 's':
                    if (strcmp(op, "i8x16.extract_lane_s") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneSVecI8x16, 16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.extract_lane_u") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneUVecI8x16, 16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'g': {
            switch (op[7]) {
              case 'e': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i8x16.ge_s") == 0) { return makeBinary(s, BinaryOp::GeSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.ge_u") == 0) { return makeBinary(s, BinaryOp::GeUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i8x16.gt_s") == 0) { return makeBinary(s, BinaryOp::GtSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.gt_u") == 0) { return makeBinary(s, BinaryOp::GtUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'l': {
            switch (op[7]) {
              case 'e': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i8x16.le_s") == 0) { return makeBinary(s, BinaryOp::LeSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.le_u") == 0) { return makeBinary(s, BinaryOp::LeUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 't': {
                switch (op[9]) {
                  case 's':
                    if (strcmp(op, "i8x16.lt_s") == 0) { return makeBinary(s, BinaryOp::LtSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.lt_u") == 0) { return makeBinary(s, BinaryOp::LtUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'm': {
            switch (op[7]) {
              case 'a': {
                switch (op[10]) {
                  case 's':
                    if (strcmp(op, "i8x16.max_s") == 0) { return makeBinary(s, BinaryOp::MaxSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.max_u") == 0) { return makeBinary(s, BinaryOp::MaxUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'i': {
                switch (op[10]) {
                  case 's':
                    if (strcmp(op, "i8x16.min_s") == 0) { return makeBinary(s, BinaryOp::MinSVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.min_u") == 0) { return makeBinary(s, BinaryOp::MinUVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'n': {
            switch (op[7]) {
              case 'a': {
                switch (op[19]) {
                  case 's':
                    if (strcmp(op, "i8x16.narrow_i16x8_s") == 0) { return makeBinary(s, BinaryOp::NarrowSVecI16x8ToVecI8x16); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i8x16.narrow_i16x8_u") == 0) { return makeBinary(s, BinaryOp::NarrowUVecI16x8ToVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e': {
                switch (op[8]) {
                  case '\0':
                    if (strcmp(op, "i8x16.ne") == 0) { return makeBinary(s, BinaryOp::NeVecI8x16); }
                    goto parse_error;
                  case 'g':
                    if (strcmp(op, "i8x16.neg") == 0) { return makeUnary(s, UnaryOp::NegVecI8x16); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'p':
            if (strcmp(op, "i8x16.popcnt") == 0) { return makeUnary(s, UnaryOp::PopcntVecI8x16); }
            goto parse_error;
          case 'r':
            if (strcmp(op, "i8x16.replace_lane") == 0) { return makeSIMDReplace(s, SIMDReplaceOp::ReplaceLaneVecI8x16, 16); }
            goto parse_error;
          case 's': {
            switch (op[7]) {
              case 'h': {
                switch (op[8]) {
                  case 'l':
                    if (strcmp(op, "i8x16.shl") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShlVecI8x16); }
                    goto parse_error;
                  case 'r': {
                    switch (op[10]) {
                      case 's':
                        if (strcmp(op, "i8x16.shr_s") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrSVecI8x16); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i8x16.shr_u") == 0) { return makeSIMDShift(s, SIMDShiftOp::ShrUVecI8x16); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'u':
                    if (strcmp(op, "i8x16.shuffle") == 0) { return makeSIMDShuffle(s); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'p':
                if (strcmp(op, "i8x16.splat") == 0) { return makeUnary(s, UnaryOp::SplatVecI8x16); }
                goto parse_error;
              case 'u': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i8x16.sub") == 0) { return makeBinary(s, BinaryOp::SubVecI8x16); }
                    goto parse_error;
                  case '_': {
                    switch (op[14]) {
                      case 's':
                        if (strcmp(op, "i8x16.sub_sat_s") == 0) { return makeBinary(s, BinaryOp::SubSatSVecI8x16); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i8x16.sub_sat_u") == 0) { return makeBinary(s, BinaryOp::SubSatUVecI8x16); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              case 'w':
                if (strcmp(op, "i8x16.swizzle") == 0) { return makeBinary(s, BinaryOp::SwizzleVec8x16); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case 'f':
        if (strcmp(op, "if") == 0) { return makeIf(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'l': {
    switch (op[2]) {
      case 'c': {
        switch (op[6]) {
          case 'g':
            if (strcmp(op, "local.get") == 0) { return makeLocalGet(s); }
            goto parse_error;
          case 's':
            if (strcmp(op, "local.set") == 0) { return makeLocalSet(s); }
            goto parse_error;
          case 't':
            if (strcmp(op, "local.tee") == 0) { return makeLocalTee(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case 'o':
        if (strcmp(op, "loop") == 0) { return makeLoop(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'm': {
    switch (op[7]) {
      case 'a': {
        switch (op[14]) {
          case 'n':
            if (strcmp(op, "memory.atomic.notify") == 0) { return makeAtomicNotify(s); }
            goto parse_error;
          case 'w': {
            switch (op[18]) {
              case '3':
                if (strcmp(op, "memory.atomic.wait32") == 0) { return makeAtomicWait(s, Type::i32); }
                goto parse_error;
              case '6':
                if (strcmp(op, "memory.atomic.wait64") == 0) { return makeAtomicWait(s, Type::i64); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case 'c':
        if (strcmp(op, "memory.copy") == 0) { return makeMemoryCopy(s); }
        goto parse_error;
      case 'f':
        if (strcmp(op, "memory.fill") == 0) { return makeMemoryFill(s); }
        goto parse_error;
      case 'g':
        if (strcmp(op, "memory.grow") == 0) { return makeMemoryGrow(s); }
        goto parse_error;
      case 'i':
        if (strcmp(op, "memory.init") == 0) { return makeMemoryInit(s); }
        goto parse_error;
      case 's':
        if (strcmp(op, "memory.size") == 0) { return makeMemorySize(s); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'n':
    if (strcmp(op, "nop") == 0) { return makeNop(); }
    goto parse_error;
  case 'p':
    if (strcmp(op, "pop") == 0) { return makePop(s); }
    goto parse_error;
  case 'r': {
    switch (op[1]) {
      case 'e': {
        switch (op[2]) {
          case 'f': {
            switch (op[4]) {
              case 'a': {
                switch (op[7]) {
                  case 'd':
                    if (strcmp(op, "ref.as_data") == 0) { return makeRefAs(s, RefAsData); }
                    goto parse_error;
                  case 'f':
                    if (strcmp(op, "ref.as_func") == 0) { return makeRefAs(s, RefAsFunc); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "ref.as_i31") == 0) { return makeRefAs(s, RefAsI31); }
                    goto parse_error;
                  case 'n':
                    if (strcmp(op, "ref.as_non_null") == 0) { return makeRefAs(s, RefAsNonNull); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'c':
                if (strcmp(op, "ref.cast") == 0) { return makeRefCast(s); }
                goto parse_error;
              case 'e':
                if (strcmp(op, "ref.eq") == 0) { return makeRefEq(s); }
                goto parse_error;
              case 'f':
                if (strcmp(op, "ref.func") == 0) { return makeRefFunc(s); }
                goto parse_error;
              case 'i': {
                switch (op[7]) {
                  case 'd':
                    if (strcmp(op, "ref.is_data") == 0) { return makeRefIs(s, RefIsData); }
                    goto parse_error;
                  case 'f':
                    if (strcmp(op, "ref.is_func") == 0) { return makeRefIs(s, RefIsFunc); }
                    goto parse_error;
                  case 'i':
                    if (strcmp(op, "ref.is_i31") == 0) { return makeRefIs(s, RefIsI31); }
                    goto parse_error;
                  case 'n':
                    if (strcmp(op, "ref.is_null") == 0) { return makeRefIs(s, RefIsNull); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n':
                if (strcmp(op, "ref.null") == 0) { return makeRefNull(s); }
                goto parse_error;
              case 't':
                if (strcmp(op, "ref.test") == 0) { return makeRefTest(s); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 't': {
            switch (op[3]) {
              case 'h':
                if (strcmp(op, "rethrow") == 0) { return makeRethrow(s); }
                goto parse_error;
              case 'u': {
                switch (op[6]) {
                  case '\0':
                    if (strcmp(op, "return") == 0) { return makeReturn(s); }
                    goto parse_error;
                  case '_': {
                    switch (op[11]) {
                      case '\0':
                        if (strcmp(op, "return_call") == 0) { return makeCall(s, /*isReturn=*/true); }
                        goto parse_error;
                      case '_': {
                        switch (op[12]) {
                          case 'i':
                            if (strcmp(op, "return_call_indirect") == 0) { return makeCallIndirect(s, /*isReturn=*/true); }
                            goto parse_error;
                          case 'r':
                            if (strcmp(op, "return_call_ref") == 0) { return makeCallRef(s, /*isReturn=*/true); }
                            goto parse_error;
                          default: goto parse_error;
                        }
                      }
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case 't': {
        switch (op[4]) {
          case 'c':
            if (strcmp(op, "rtt.canon") == 0) { return makeRttCanon(s); }
            goto parse_error;
          case 'f':
            if (strcmp(op, "rtt.fresh_sub") == 0) { return makeRttFreshSub(s); }
            goto parse_error;
          case 's':
            if (strcmp(op, "rtt.sub") == 0) { return makeRttSub(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 's': {
    switch (op[1]) {
      case 'e':
        if (strcmp(op, "select") == 0) { return makeSelect(s); }
        goto parse_error;
      case 't': {
        switch (op[7]) {
          case 'g': {
            switch (op[10]) {
              case '\0':
                if (strcmp(op, "struct.get") == 0) { return makeStructGet(s); }
                goto parse_error;
              case '_': {
                switch (op[11]) {
                  case 's':
                    if (strcmp(op, "struct.get_s") == 0) { return makeStructGet(s, Signed); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "struct.get_u") == 0) { return makeStructGet(s, Unsigned); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'n': {
            switch (op[11]) {
              case 'd':
                if (strcmp(op, "struct.new_default_with_rtt") == 0) { return makeStructNew(s, true); }
                goto parse_error;
              case 'w':
                if (strcmp(op, "struct.new_with_rtt") == 0) { return makeStructNew(s, false); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 's':
            if (strcmp(op, "struct.set") == 0) { return makeStructSet(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 't': {
    switch (op[1]) {
      case 'h': {
        switch (op[2]) {
          case 'e':
            if (strcmp(op, "then") == 0) { return makeThenOrElse(s); }
            goto parse_error;
          case 'r':
            if (strcmp(op, "throw") == 0) { return makeThrow(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case 'r':
        if (strcmp(op, "try") == 0) { return makeTry(s); }
        goto parse_error;
      case 'u': {
        switch (op[6]) {
          case 'e':
            if (strcmp(op, "tuple.extract") == 0) { return makeTupleExtract(s); }
            goto parse_error;
          case 'm':
            if (strcmp(op, "tuple.make") == 0) { return makeTupleMake(s); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 'u':
    if (strcmp(op, "unreachable") == 0) { return makeUnreachable(); }
    goto parse_error;
  case 'v': {
    switch (op[5]) {
      case 'a': {
        switch (op[7]) {
          case 'd': {
            switch (op[8]) {
              case '\0':
                if (strcmp(op, "v128.and") == 0) { return makeBinary(s, BinaryOp::AndVec128); }
                goto parse_error;
              case 'n':
                if (strcmp(op, "v128.andnot") == 0) { return makeBinary(s, BinaryOp::AndNotVec128); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case 'y':
            if (strcmp(op, "v128.any_true") == 0) { return makeUnary(s, UnaryOp::AnyTrueVec128); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case 'b':
        if (strcmp(op, "v128.bitselect") == 0) { return makeSIMDTernary(s, SIMDTernaryOp::Bitselect); }
        goto parse_error;
      case 'c':
        if (strcmp(op, "v128.const") == 0) { return makeConst(s, Type::v128); }
        goto parse_error;
      case 'l': {
        switch (op[9]) {
          case '\0':
            if (strcmp(op, "v128.load") == 0) { return makeLoad(s, Type::v128, /*isAtomic=*/false); }
            goto parse_error;
          case '1': {
            switch (op[11]) {
              case '_': {
                switch (op[12]) {
                  case 'l':
                    if (strcmp(op, "v128.load16_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Load16LaneVec128); }
                    goto parse_error;
                  case 's':
                    if (strcmp(op, "v128.load16_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load16SplatVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'x': {
                switch (op[14]) {
                  case 's':
                    if (strcmp(op, "v128.load16x4_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load16x4SVec128); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "v128.load16x4_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load16x4UVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case '3': {
            switch (op[11]) {
              case '_': {
                switch (op[12]) {
                  case 'l':
                    if (strcmp(op, "v128.load32_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Load32LaneVec128); }
                    goto parse_error;
                  case 's':
                    if (strcmp(op, "v128.load32_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load32SplatVec128); }
                    goto parse_error;
                  case 'z':
                    if (strcmp(op, "v128.load32_zero") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load32ZeroVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'x': {
                switch (op[14]) {
                  case 's':
                    if (strcmp(op, "v128.load32x2_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load32x2SVec128); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "v128.load32x2_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load32x2UVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case '6': {
            switch (op[12]) {
              case 'l':
                if (strcmp(op, "v128.load64_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Load64LaneVec128); }
                goto parse_error;
              case 's':
                if (strcmp(op, "v128.load64_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load64SplatVec128); }
                goto parse_error;
              case 'z':
                if (strcmp(op, "v128.load64_zero") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load64ZeroVec128); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case '8': {
            switch (op[10]) {
              case '_': {
                switch (op[11]) {
                  case 'l':
                    if (strcmp(op, "v128.load8_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Load8LaneVec128); }
                    goto parse_error;
                  case 's':
                    if (strcmp(op, "v128.load8_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load8SplatVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'x': {
                switch (op[13]) {
                  case 's':
                    if (strcmp(op, "v128.load8x8_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load8x8SVec128); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "v128.load8x8_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::Load8x8UVec128); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case 'n':
        if (strcmp(op, "v128.not") == 0) { return makeUnary(s, UnaryOp::NotVec128); }
        goto parse_error;
      case 'o':
        if (strcmp(op, "v128.or") == 0) { return makeBinary(s, BinaryOp::OrVec128); }
        goto parse_error;
      case 's': {
        switch (op[10]) {
          case '\0':
            if (strcmp(op, "v128.store") == 0) { return makeStore(s, Type::v128, /*isAtomic=*/false); }
            goto parse_error;
          case '1':
            if (strcmp(op, "v128.store16_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Store16LaneVec128); }
            goto parse_error;
          case '3':
            if (strcmp(op, "v128.store32_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Store32LaneVec128); }
            goto parse_error;
          case '6':
            if (strcmp(op, "v128.store64_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Store64LaneVec128); }
            goto parse_error;
          case '8':
            if (strcmp(op, "v128.store8_lane") == 0) { return makeSIMDLoadStoreLane(s, SIMDLoadStoreLaneOp::Store8LaneVec128); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case 'x':
        if (strcmp(op, "v128.xor") == 0) { return makeBinary(s, BinaryOp::XorVec128); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  default: goto parse_error;
}
parse_error:
  throw ParseException(std::string(op), s.line, s.col);
#endif // INSTRUCTION_PARSER

// clang-format on