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davidungar · Oct 20, 2020 · f573cf9 · f573cf9
1 parent 1955f1d
commit f573cf9
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Showing 2 changed files with 5 additions and 7 deletions.
diff --git a/Sources/SwiftDriver/Incremental Compilation/IncrementalCompilationState.swift b/Sources/SwiftDriver/Incremental Compilation/IncrementalCompilationState.swift
@@ -398,7 +398,7 @@ extension IncrementalCompilationState {
         reportIncrementalDecision("Tried to schedule 2nd wave input \(input.file.basename) again")
       }
     }
-    if skippedCompileJobs.isEmpty {
+    if !sources.isEmpty && skippedCompileJobs.isEmpty {
       for job in postCompileJobs {
         reportIncrementalDecision("Scheduling post 2nd wave \(job.descriptionForLifecycle)")
         scheduleASecondWaveJob(job)

diff --git a/Tests/SwiftDriverTests/IncrementalCompilationTests.swift b/Tests/SwiftDriverTests/IncrementalCompilationTests.swift
@@ -450,18 +450,16 @@ final class IncrementalCompilationTests: XCTestCase {
         "Incremental compilation decision: Skipping Compiling other.swift",
         "Starting Compiling main.swift",
         "Finished Compiling main.swift",
+
         "interface of main.swiftdeps->interface of top-level name foo->implementation of other.swiftdeps",
         "Incremental compilation decision: Queuing because of dependencies discovered later: {compile: other.o <= other.swift}",
-        "Delaying Linking theModule pending discovering delayed dependencies",
-        "Scheduling 2nd wave Compiling other.swift",
-        "Scheduling post 2nd wave Linking theModule",
-
+        "Incremental compilation decision: Delaying Linking theModule pending discovering delayed dependencies",
+        "Incremental compilation decision: Scheduling 2nd wave Compiling other.swift",
+        "Incremental compilation decision: Scheduling post 2nd wave Linking theModule",
         "Starting Compiling other.swift",
         "Finished Compiling other.swift",
-        "Incremental compilation decision: Scheduling post 2nd wave Linking theModule",
         "Starting Linking theModule",
         "Finished Linking theModule",
-        "Incremental compilation decision: Scheduling post 2nd wave Linking theModule",
      ])
     }
   }