Bring back -Xfrontend -enable-resilience temporarily

Author: slavapestov

include/swift/Option/FrontendOptions.td

@@ -174,6 +174,9 @@ def disable_objc_attr_requires_foundation_module :
   HelpText<"Disable requiring uses of @objc to require importing the "
            "Foundation module">;
 
+def enable_resilience : Flag<["-"], "enable-resilience">,
+   HelpText<"Deprecated, use -enable-library-evolution instead">;
+
 }
 
 

lib/Frontend/ArgsToFrontendOptionsConverter.cpp

@@ -72,6 +72,10 @@ bool ArgsToFrontendOptionsConverter::convert(
   Opts.EnableTesting |= Args.hasArg(OPT_enable_testing);
   Opts.EnablePrivateImports |= Args.hasArg(OPT_enable_private_imports);
   Opts.EnableLibraryEvolution |= Args.hasArg(OPT_enable_library_evolution);
+
+  // FIXME: Remove this flag
+  Opts.EnableLibraryEvolution |= Args.hasArg(OPT_enable_resilience);
+
   Opts.EnableImplicitDynamic |= Args.hasArg(OPT_enable_implicit_dynamic);
 
   Opts.TrackSystemDeps |= Args.hasArg(OPT_track_system_dependencies);

test/Serialization/resilience.swift

@@ -1,7 +1,7 @@
 // RUN: %empty-directory(%t)
 
-// This test checks that we serialize the -enable-library-evolution and -sil-serialize-all
-// flags correctly.
+// This test checks that we serialize the -enable-library-evolution
+// flag.
 
 // RUN: %target-swift-frontend -emit-module -o %t %s
 // RUN: llvm-bcanalyzer -dump %t/resilience.swiftmodule > %t/resilience.dump.txt
@@ -10,11 +10,13 @@
 // RUN: %target-swift-frontend -emit-module -o %t -enable-library-evolution %s
 // RUN: llvm-bcanalyzer -dump %t/resilience.swiftmodule > %t/resilience2.dump.txt
 // RUN: %FileCheck -check-prefix=CHECK -check-prefix=RESILIENCE %s < %t/resilience2.dump.txt
+// RUN: %FileCheck -check-prefix=NEGATIVE %s < %t/resilience2.dump.txt
 
-// RUN: %target-swift-frontend -emit-module -o %t %s
-// RUN: llvm-bcanalyzer -dump %t/resilience.swiftmodule > %t/resilience3.dump.txt
-// RUN: %FileCheck -check-prefix=CHECK -check-prefix=FRAGILE %s < %t/resilience3.dump.txt
+// FIXME: The alternate -enable-resilience flag is going away soon.
 
+// RUN: %target-swift-frontend -emit-module -o %t -enable-resilience %s
+// RUN: llvm-bcanalyzer -dump %t/resilience.swiftmodule > %t/resilience2.dump.txt
+// RUN: %FileCheck -check-prefix=CHECK -check-prefix=RESILIENCE %s < %t/resilience2.dump.txt
 // RUN: %FileCheck -check-prefix=NEGATIVE %s < %t/resilience2.dump.txt
 
 // CHECK: <MODULE_BLOCK {{.*}}>