Remove `--swift_whole_module_optimization` flag.

Users should instead pass `--swiftcopt=-whole-module-optimization`, which has the same effect.

PiperOrigin-RevId: 190800123

2 files changed, 2 insertions, 23 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftCommandLineOptions.java b/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftCommandLineOptions.java
index 35ddd09a68..a623c8634d 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftCommandLineOptions.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftCommandLineOptions.java
@@ -33,13 +33,4 @@ public class SwiftCommandLineOptions extends FragmentOptions {
     help = "Additional options to pass to Swift compilation."
   )
   public List<String> copts;
-
-  @Option(
-    name = "swift_whole_module_optimization",
-    defaultValue = "false",
-    documentationCategory = OptionDocumentationCategory.OUTPUT_PARAMETERS,
-    effectTags = {OptionEffectTag.ACTION_COMMAND_LINES},
-    help = "Whether to enable Whole Module Optimization"
-  )
-  public boolean enableWholeModuleOptimization;
 }
diff --git a/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftConfiguration.java b/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftConfiguration.java
index 5794bcd558..60e771aabd 100644
--- a/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftConfiguration.java
+++ b/src/main/java/com/google/devtools/build/lib/rules/apple/swift/SwiftConfiguration.java
@@ -40,29 +40,17 @@ import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory;
 )
 @Immutable
 public class SwiftConfiguration extends BuildConfiguration.Fragment {
-  private final boolean enableWholeModuleOptimization;
   private final ImmutableList<String> copts;
 
   public SwiftConfiguration(SwiftCommandLineOptions options) {
-    this(options.enableWholeModuleOptimization, ImmutableList.copyOf(options.copts));
+    this(ImmutableList.copyOf(options.copts));
   }
 
   @AutoCodec.Instantiator
-  SwiftConfiguration(boolean enableWholeModuleOptimization, ImmutableList<String> copts) {
-    this.enableWholeModuleOptimization = enableWholeModuleOptimization;
+  SwiftConfiguration(ImmutableList<String> copts) {
     this.copts = copts;
   }
 
-  /** Returns whether to enable Whole Module Optimization. */
-  @SkylarkCallable(
-    name = "enable_whole_module_optimization",
-    doc = "<code>True</code> if <em>whole module optimization</em> should be enabled when "
-        + "compiling Swift code; otherwise, <code>False</code>."
-  )
-  public boolean enableWholeModuleOptimization() {
-    return enableWholeModuleOptimization;
-  }
-
   /** Returns a list of options to use for compiling Swift. */
   @SkylarkCallable(
     name = "copts",