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

// clang-format off

#ifdef INSTRUCTION_PARSER
#undef INSTRUCTION_PARSER
char op[27] = {'\0'};
strncpy(op, s[0]->c_str(), 26);
switch (op[0]) {
  case 'a': {
    switch (op[1]) {
      case 'n':
        if (strcmp(op, "anyref.pop") == 0) { return makePop(Type::anyref); }
        goto parse_error;
      case 't': {
        switch (op[7]) {
          case 'f':
            if (strcmp(op, "atomic.fence") == 0) { return makeAtomicFence(s); }
            goto parse_error;
          case 'n':
            if (strcmp(op, "atomic.notify") == 0) { return makeAtomicNotify(s); }
            goto parse_error;
          default: 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':
                if (strcmp(op, "br_on_exn") == 0) { return makeBrOnExn(s); }
                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 '_':
        if (strcmp(op, "call_indirect") == 0) { return makeCallIndirect(s, /*isReturn=*/false); }
        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': {
    switch (op[1]) {
      case 'l':
        if (strcmp(op, "else") == 0) { return makeThenOrElse(s); }
        goto parse_error;
      case 'x':
        if (strcmp(op, "exnref.pop") == 0) { return makePop(Type::exnref); }
        goto parse_error;
      default: 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 'p':
                if (strcmp(op, "f32.pop") == 0) { return makePop(Type::f32); }
                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[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;
                }
              }
              case 'd':
                if (strcmp(op, "f32x4.div") == 0) { return makeBinary(s, BinaryOp::DivVecF32x4); }
                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 '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 'g':
                    if (strcmp(op, "f32x4.neg") == 0) { return makeUnary(s, UnaryOp::NegVecF32x4); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'q': {
                switch (op[9]) {
                  case 'a':
                    if (strcmp(op, "f32x4.qfma") == 0) { return makeSIMDTernary(s, SIMDTernaryOp::QFMAF32x4); }
                    goto parse_error;
                  case 's':
                    if (strcmp(op, "f32x4.qfms") == 0) { return makeSIMDTernary(s, SIMDTernaryOp::QFMSF32x4); }
                    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;
                }
              }
              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': {
                switch (op[5]) {
                  case 'o':
                    if (strcmp(op, "f64.pop") == 0) { return makePop(Type::f64); }
                    goto parse_error;
                  case 'r':
                    if (strcmp(op, "f64.promote_f32") == 0) { return makeUnary(s, UnaryOp::PromoteFloat32); }
                    goto parse_error;
                  default: 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[20]) {
                  case 's':
                    if (strcmp(op, "f64x2.convert_i64x2_s") == 0) { return makeUnary(s, UnaryOp::ConvertSVecI64x2ToVecF64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "f64x2.convert_i64x2_u") == 0) { return makeUnary(s, UnaryOp::ConvertUVecI64x2ToVecF64x2); }
                    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 '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 'g':
                    if (strcmp(op, "f64x2.neg") == 0) { return makeUnary(s, UnaryOp::NegVecF64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'q': {
                switch (op[9]) {
                  case 'a':
                    if (strcmp(op, "f64x2.qfma") == 0) { return makeSIMDTernary(s, SIMDTernaryOp::QFMAF64x2); }
                    goto parse_error;
                  case 's':
                    if (strcmp(op, "f64x2.qfms") == 0) { return makeSIMDTernary(s, SIMDTernaryOp::QFMSF64x2); }
                    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;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case 'u':
        if (strcmp(op, "funcref.pop") == 0) { return makePop(Type::funcref); }
        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 'd': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i16x8.add") == 0) { return makeBinary(s, BinaryOp::AddVecI16x8); }
                    goto parse_error;
                  case '_': {
                    switch (op[19]) {
                      case 's':
                        if (strcmp(op, "i16x8.add_saturate_s") == 0) { return makeBinary(s, BinaryOp::AddSatSVecI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.add_saturate_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 'n':
                if (strcmp(op, "i16x8.any_true") == 0) { return makeUnary(s, UnaryOp::AnyTrueVecI16x8); }
                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 'e': {
            switch (op[7]) {
              case 'q':
                if (strcmp(op, "i16x8.eq") == 0) { return makeBinary(s, BinaryOp::EqVecI16x8); }
                goto parse_error;
              case 'x': {
                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;
            }
          }
          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 'o': {
                switch (op[14]) {
                  case 's':
                    if (strcmp(op, "i16x8.load8x8_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtSVec8x8ToVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.load8x8_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtUVec8x8ToVecI16x8); }
                    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 '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[19]) {
                      case 's':
                        if (strcmp(op, "i16x8.sub_saturate_s") == 0) { return makeBinary(s, BinaryOp::SubSatSVecI16x8); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i16x8.sub_saturate_u") == 0) { return makeBinary(s, BinaryOp::SubSatUVecI16x8); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          case 'w': {
            switch (op[12]) {
              case 'h': {
                switch (op[23]) {
                  case 's':
                    if (strcmp(op, "i16x8.widen_high_i8x16_s") == 0) { return makeUnary(s, UnaryOp::WidenHighSVecI8x16ToVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.widen_high_i8x16_u") == 0) { return makeUnary(s, UnaryOp::WidenHighUVecI8x16ToVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'l': {
                switch (op[22]) {
                  case 's':
                    if (strcmp(op, "i16x8.widen_low_i8x16_s") == 0) { return makeUnary(s, UnaryOp::WidenLowSVecI8x16ToVecI16x8); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i16x8.widen_low_i8x16_u") == 0) { return makeUnary(s, UnaryOp::WidenLowUVecI8x16ToVecI16x8); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      case '3': {
        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;
                        }
                      }
                      case 'w':
                        if (strcmp(op, "i32.atomic.wait") == 0) { return makeAtomicWait(s, Type::i32); }
                        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': {
                switch (op[7]) {
                  case '\0':
                    if (strcmp(op, "i32.pop") == 0) { return makePop(Type::i32); }
                    goto parse_error;
                  case 'c':
                    if (strcmp(op, "i32.popcnt") == 0) { return makeUnary(s, UnaryOp::PopcntInt32); }
                    goto parse_error;
                  default: 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 '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;
                  case 'n':
                    if (strcmp(op, "i32x4.any_true") == 0) { return makeUnary(s, UnaryOp::AnyTrueVecI32x4); }
                    goto parse_error;
                  default: 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':
                    if (strcmp(op, "i32x4.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecI32x4, 4); }
                    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 'o': {
                    switch (op[15]) {
                      case 's':
                        if (strcmp(op, "i32x4.load16x4_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtSVec16x4ToVecI32x4); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i32x4.load16x4_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtUVec16x4ToVecI32x4); }
                        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[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 'w': {
                switch (op[12]) {
                  case 'h': {
                    switch (op[23]) {
                      case 's':
                        if (strcmp(op, "i32x4.widen_high_i16x8_s") == 0) { return makeUnary(s, UnaryOp::WidenHighSVecI16x8ToVecI32x4); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i32x4.widen_high_i16x8_u") == 0) { return makeUnary(s, UnaryOp::WidenHighUVecI16x8ToVecI32x4); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  case 'l': {
                    switch (op[22]) {
                      case 's':
                        if (strcmp(op, "i32x4.widen_low_i16x8_s") == 0) { return makeUnary(s, UnaryOp::WidenLowSVecI16x8ToVecI32x4); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i32x4.widen_low_i16x8_u") == 0) { return makeUnary(s, UnaryOp::WidenLowUVecI16x8ToVecI32x4); }
                        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;
                        }
                      }
                      case 'w':
                        if (strcmp(op, "i64.atomic.wait") == 0) { return makeAtomicWait(s, Type::i64); }
                        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': {
                switch (op[7]) {
                  case '\0':
                    if (strcmp(op, "i64.pop") == 0) { return makePop(Type::i64); }
                    goto parse_error;
                  case 'c':
                    if (strcmp(op, "i64.popcnt") == 0) { return makeUnary(s, UnaryOp::PopcntInt64); }
                    goto parse_error;
                  default: 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 '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;
                  case 'n':
                    if (strcmp(op, "i64x2.any_true") == 0) { return makeUnary(s, UnaryOp::AnyTrueVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'e':
                if (strcmp(op, "i64x2.extract_lane") == 0) { return makeSIMDExtract(s, SIMDExtractOp::ExtractLaneVecI64x2, 2); }
                goto parse_error;
              case 'l': {
                switch (op[15]) {
                  case 's':
                    if (strcmp(op, "i64x2.load32x2_s") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtSVec32x2ToVecI64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i64x2.load32x2_u") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadExtUVec32x2ToVecI64x2); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              case 'n':
                if (strcmp(op, "i64x2.neg") == 0) { return makeUnary(s, UnaryOp::NegVecI64x2); }
                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;
                }
              }
              case 't': {
                switch (op[22]) {
                  case 's':
                    if (strcmp(op, "i64x2.trunc_sat_f64x2_s") == 0) { return makeUnary(s, UnaryOp::TruncSatSVecF64x2ToVecI64x2); }
                    goto parse_error;
                  case 'u':
                    if (strcmp(op, "i64x2.trunc_sat_f64x2_u") == 0) { return makeUnary(s, UnaryOp::TruncSatUVecF64x2ToVecI64x2); }
                    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 'd': {
                switch (op[9]) {
                  case '\0':
                    if (strcmp(op, "i8x16.add") == 0) { return makeBinary(s, BinaryOp::AddVecI8x16); }
                    goto parse_error;
                  case '_': {
                    switch (op[19]) {
                      case 's':
                        if (strcmp(op, "i8x16.add_saturate_s") == 0) { return makeBinary(s, BinaryOp::AddSatSVecI8x16); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i8x16.add_saturate_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 'n':
                if (strcmp(op, "i8x16.any_true") == 0) { return makeUnary(s, UnaryOp::AnyTrueVecI8x16); }
                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 '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;
                }
              }
              case 'u':
                if (strcmp(op, "i8x16.mul") == 0) { return makeBinary(s, BinaryOp::MulVecI8x16); }
                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 '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;
                    }
                  }
                  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[19]) {
                      case 's':
                        if (strcmp(op, "i8x16.sub_saturate_s") == 0) { return makeBinary(s, BinaryOp::SubSatSVecI8x16); }
                        goto parse_error;
                      case 'u':
                        if (strcmp(op, "i8x16.sub_saturate_u") == 0) { return makeBinary(s, BinaryOp::SubSatUVecI8x16); }
                        goto parse_error;
                      default: goto parse_error;
                    }
                  }
                  default: 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 '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 makeHost(s, HostOp::MemoryGrow); }
        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 makeHost(s, HostOp::MemorySize); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'n': {
    switch (op[1]) {
      case 'o':
        if (strcmp(op, "nop") == 0) { return makeNop(); }
        goto parse_error;
      case 'u':
        if (strcmp(op, "nullref.pop") == 0) { return makePop(Type::nullref); }
        goto parse_error;
      default: goto parse_error;
    }
  }
  case 'p':
    if (strcmp(op, "push") == 0) { return makePush(s); }
    goto parse_error;
  case 'r': {
    switch (op[2]) {
      case 'f': {
        switch (op[4]) {
          case 'f':
            if (strcmp(op, "ref.func") == 0) { return makeRefFunc(s); }
            goto parse_error;
          case 'i':
            if (strcmp(op, "ref.is_null") == 0) { return makeRefIsNull(s); }
            goto parse_error;
          case 'n':
            if (strcmp(op, "ref.null") == 0) { return makeRefNull(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 '_':
                    if (strcmp(op, "return_call_indirect") == 0) { return makeCallIndirect(s, /*isReturn=*/true); }
                    goto parse_error;
                  default: goto parse_error;
                }
              }
              default: goto parse_error;
            }
          }
          default: goto parse_error;
        }
      }
      default: goto parse_error;
    }
  }
  case 's':
    if (strcmp(op, "select") == 0) { return makeSelect(s); }
    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;
      default: goto parse_error;
    }
  }
  case 'u':
    if (strcmp(op, "unreachable") == 0) { return makeUnreachable(); }
    goto parse_error;
  case 'v': {
    switch (op[1]) {
      case '1': {
        switch (op[2]) {
          case '2': {
            switch (op[5]) {
              case 'a': {
                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 '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':
                if (strcmp(op, "v128.load") == 0) { return makeLoad(s, Type::v128, /*isAtomic=*/false); }
                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 'p':
                if (strcmp(op, "v128.pop") == 0) { return makePop(Type::v128); }
                goto parse_error;
              case 's':
                if (strcmp(op, "v128.store") == 0) { return makeStore(s, Type::v128, /*isAtomic=*/false); }
                goto parse_error;
              case 'x':
                if (strcmp(op, "v128.xor") == 0) { return makeBinary(s, BinaryOp::XorVec128); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          case '6':
            if (strcmp(op, "v16x8.load_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadSplatVec16x8); }
            goto parse_error;
          default: goto parse_error;
        }
      }
      case '3':
        if (strcmp(op, "v32x4.load_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadSplatVec32x4); }
        goto parse_error;
      case '6':
        if (strcmp(op, "v64x2.load_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadSplatVec64x2); }
        goto parse_error;
      case '8': {
        switch (op[6]) {
          case 'l':
            if (strcmp(op, "v8x16.load_splat") == 0) { return makeSIMDLoad(s, SIMDLoadOp::LoadSplatVec8x16); }
            goto parse_error;
          case 's': {
            switch (op[7]) {
              case 'h':
                if (strcmp(op, "v8x16.shuffle") == 0) { return makeSIMDShuffle(s); }
                goto parse_error;
              case 'w':
                if (strcmp(op, "v8x16.swizzle") == 0) { return makeBinary(s, BinaryOp::SwizzleVec8x16); }
                goto parse_error;
              default: goto parse_error;
            }
          }
          default: 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