Fix tests for Linux

Author: DougGregor

test/Macros/expand_on_imported.swift

@@ -22,5 +22,5 @@ func testAll(x: Double, y: Double, computer: SlowComputer) async {
   let _: Double = await computer.divide(x, y)
 }
 
-// CHECK: define swifttailcc void @"$sSC12async_divideyS2d_SdtYaF"
-// CHECK: define swifttailcc void @"$sSo12SlowComputerV6divideyS2d_SdtYaF"
+// CHECK: define{{.*}}@"$sSC12async_divideyS2d_SdtYaF"
+// CHECK: define{{.*}}@"$sSo12SlowComputerV6divideyS2d_SdtYaF"

test/Macros/expand_on_imported_objc.swift

@@ -1,5 +1,6 @@
 // REQUIRES: swift_swift_parser, executable_test, objc_interop, concurrency
 // REQUIRES: swift_feature_MacrosOnImports
+// REQUIRES: OS=macosx
 
 // RUN: %empty-directory(%t)
 // RUN: %host-build-swift -swift-version 5 -emit-library -o %t/%target-library-name(MacroDefinition) -module-name=MacroDefinition %S/Inputs/syntax_macro_definitions.swift -g -no-toolchain-stdlib-rpath -swift-version 5