[test] Use -build-module-from-parseable-interface to test overlays (#21687)

Previously we used a manual -emit-module command with a hardcoded set
of arguments, but that didn't work properly for all overlays. This is
much better.

Author: jrose-apple

validation-test/ParseableInterface/verify_all_overlays.swift

@@ -2,25 +2,14 @@
 // generated.
 
 // RUN: %empty-directory(%t)
-// RUN: for x in %platform-sdk-overlay-dir/*.swiftinterface; do [[ $(basename "$x") = Swift.swiftinterface || $(basename "$x") = simd.swiftinterface || $(basename "$x") = SwiftLang.swiftinterface || $(basename "$x") = '*.swiftinterface' ]] && continue; %target-swift-frontend "$x" -emit-module -o %t/$(basename "$x" .swiftinterface).swiftmodule -disable-objc-attr-requires-foundation-module -enable-resilience -Fsystem %sdk/System/Library/PrivateFrameworks/ -swift-version 4 || echo '%target-os:' $(basename "$x") >> %t/failures.txt; done
+// RUN: for x in %platform-sdk-overlay-dir/*.swiftinterface; do [[ $(basename "$x") = Swift.swiftinterface || $(basename "$x") = simd.swiftinterface || $(basename "$x") = SwiftLang.swiftinterface || $(basename "$x") = '*.swiftinterface' ]] && continue; %target-swift-frontend "$x" -build-module-from-parseable-interface -o %t/$(basename "$x" .swiftinterface).swiftmodule -Fsystem %sdk/System/Library/PrivateFrameworks/ || echo '%target-os:' $(basename "$x") >> %t/failures.txt; done
 // RUN: test ! -e %t/failures.txt || diff <(grep '%target-os:' %s) <(sort -f %t/failures.txt)
 
 // REQUIRES: nonexecutable_test
 
 // The following parseable interfaces (in alphabetical order) are known not to
 // work with these settings.
 
-// Needs to be built as Swift 4.2.
-macosx: CloudKit.swiftinterface
-ios: CloudKit.swiftinterface
-tvos: CloudKit.swiftinterface
-watchos: CloudKit.swiftinterface
-
-// Needs to be built as Swift 4.2.
-ios: UIKit.swiftinterface
-tvos: UIKit.swiftinterface
-watchos: UIKit.swiftinterface
-
 // Missing search path for XCTest.framework.
 macosx: XCTest.swiftinterface
 ios: XCTest.swiftinterface

validation-test/ParseableInterface/verify_all_overlays_O.swift

@@ -2,8 +2,7 @@
 // generated.
 
 // RUN: %empty-directory(%t)
-// RUN: test ! -e %platform-sdk-overlay-dir/simd.swiftinterface || %target-swift-frontend %platform-sdk-overlay-dir/simd.swiftinterface -emit-module -o %t/simd.swiftmodule -enable-resilience -parse-stdlib -import-module Swift -swift-version 4
-// RUN: test ! -e %platform-sdk-overlay-dir/simd.swiftinterface || %target-swift-frontend %platform-sdk-overlay-dir/simd.swiftinterface -emit-module -o %t/simd.swiftmodule -enable-resilience -parse-stdlib -import-module Swift -swift-version 4 -O
+// RUN: test ! -e %platform-sdk-overlay-dir/simd.swiftinterface || %target-swift-frontend -build-module-from-parseable-interface %platform-sdk-overlay-dir/simd.swiftinterface -o %t/simd.swiftmodule
 
 // REQUIRES: nonexecutable_test
 // REQUIRES: objc_interop