       Option.glineTablesOnly,
       Option.gnone,
       Option.groupInfoPath,
-      Option.debugOnSil,
+      Option.legacyGsil,
       Option.g,
       Option.helpHidden,
       Option.helpHidden_,

      Option.serializeModuleInterfaceDependencyHashes,
      Option.serializeParseableModuleInterfaceDependencyHashes,
      Option.showDiagnosticsAfterFatal,
      Option.silDebugSerialization,
      Option.silInlineCallerBenefitReductionFactor,
      Option.silInlineThreshold,

  public static let serializeModuleInterfaceDependencyHashes: Option = Option("-serialize-module-interface-dependency-hashes", .flag, attributes: [.frontend, .noDriver])
  public static let serializeParseableModuleInterfaceDependencyHashes: Option = Option("-serialize-parseable-module-interface-dependency-hashes", .flag, alias: Option.serializeModuleInterfaceDependencyHashes, attributes: [.frontend, .noDriver])
  public static let showDiagnosticsAfterFatal: Option = Option("-show-diagnostics-after-fatal", .flag, attributes: [.frontend, .noDriver], helpText: "Keep emitting subsequent diagnostics after a fatal error")
  public static let debugOnSil: Option = Option("-sil-based-debuginfo", .flag, attributes: [.helpHidden, .frontend, .noDriver], helpText: "Write the SIL into a file and generate debug-info to debug on SIL  level.")
  public static let silDebugSerialization: Option = Option("-sil-debug-serialization", .flag, attributes: [.helpHidden, .frontend, .noDriver], helpText: "Do not eliminate functions in Mandatory Inlining/SILCombine dead functions. (for debugging only)")
  public static let silInlineCallerBenefitReductionFactor: Option = Option("-sil-inline-caller-benefit-reduction-factor", .separate, attributes: [.helpHidden, .frontend, .noDriver], metaVar: "<2>", helpText: "Controls the aggressiveness of performance inlining in -Osize mode by reducing the base benefits of a caller (lower value permits more inlining!)")
  public static let silInlineThreshold: Option = Option("-sil-inline-threshold", .separate, attributes: [.helpHidden, .frontend, .noDriver], metaVar: "<50>", helpText: "Controls the aggressiveness of performance inlining")
