Use export_as for autolinking frameworks

framework module SomeKitCore {
  ...
  export_as SomeKit
}

Given the module above, while generting autolink information during
codegen, clang should to emit '-framework SomeKitCore' only if SomeKit
was not imported in the relevant TU, otherwise it should use '-framework
SomeKit' instead.

rdar://problem/38269782

llvm-svn: 330152

11 files changed, 77 insertions, 0 deletions

diff --git a/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Headers/OtherKit.h b/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Headers/OtherKit.h
new file mode 100644
index 00000000000..18f0bd555d6
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Headers/OtherKit.h
@@ -0,0 +1,6 @@
+#import <SomeKitCore/SomeKitCore.h>
+
+#ifdef F
+#import <SomeKit/SomeKit.h>
+#endif
+
diff --git a/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Modules/module.modulemap b/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Modules/module.modulemap
new file mode 100644
index 00000000000..1ce73512180
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/OtherKit.framework/Modules/module.modulemap
@@ -0,0 +1,5 @@
+
+framework module OtherKit {
+  header "OtherKit.h"
+  export *
+}
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SKWidget.h b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SKWidget.h
new file mode 100644
index 00000000000..dd99ff7ed2f
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SKWidget.h
@@ -0,0 +1 @@
+#import <SomeKitCore/SKWidget.h>
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SomeKit.h b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SomeKit.h
new file mode 100644
index 00000000000..17a4cc83fdf
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Headers/SomeKit.h
@@ -0,0 +1 @@
+#import <SomeKit/SKWidget.h>
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Modules/module.modulemap b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Modules/module.modulemap
new file mode 100644
index 00000000000..ae4b276d47b
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/Modules/module.modulemap
@@ -0,0 +1,6 @@
+framework module SomeKit {
+  umbrella header "SomeKit.h"
+  module * {
+    export *
+  }
+}
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/SomeKit.tbd b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/SomeKit.tbd
new file mode 100644
index 00000000000..ab95795b98e
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKit.framework/SomeKit.tbd
@@ -0,0 +1 @@
+dummy tbd file
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SKWidget.h b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SKWidget.h
new file mode 100644
index 00000000000..1fb010cb39a
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SKWidget.h
@@ -0,0 +1,4 @@
+@interface SKWidget
+- (void)someObjCMethod;
+@end
+
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SomeKitCore.h b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SomeKitCore.h
new file mode 100644
index 00000000000..dd99ff7ed2f
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Headers/SomeKitCore.h
@@ -0,0 +1 @@
+#import <SomeKitCore/SKWidget.h>
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Modules/module.modulemap b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Modules/module.modulemap
new file mode 100644
index 00000000000..30f9770c97c
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/Modules/module.modulemap
@@ -0,0 +1,7 @@
+framework module SomeKitCore {
+  umbrella header "SomeKitCore.h"
+  export_as SomeKit
+  module * {
+    export *
+  }
+}
diff --git a/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/SomeKitCore.tbd b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/SomeKitCore.tbd
new file mode 100644
index 00000000000..ab95795b98e
--- /dev/null
+++ b/clang/test/Modules/Inputs/exportas-link/SomeKitCore.framework/SomeKitCore.tbd
@@ -0,0 +1 @@
+dummy tbd file
diff --git a/clang/test/Modules/use-exportas-for-link.m b/clang/test/Modules/use-exportas-for-link.m
new file mode 100644
index 00000000000..69773e6039f
--- /dev/null
+++ b/clang/test/Modules/use-exportas-for-link.m
@@ -0,0 +1,44 @@
+// RUN: rm -rf %t
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DA -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_A %s
+// CHECK_A: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_A: ![[MODULE]] = !{!"-framework", !"SomeKit"}
+#ifdef A
+@import SomeKitCore;
+@import SomeKit;
+#endif
+
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DB -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_B %s
+// CHECK_B: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_B: ![[MODULE]] = !{!"-framework", !"SomeKit"}
+#ifdef B
+@import SomeKit;
+@import SomeKitCore;
+#endif
+
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DC -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_C %s
+// CHECK_C: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_C: ![[MODULE]] = !{!"-framework", !"SomeKitCore"}
+#ifdef C
+@import SomeKitCore;
+#endif
+
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DD -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_D %s
+// CHECK_D: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_D: ![[MODULE]] = !{!"-framework", !"SomeKit"}
+#ifdef D
+@import SomeKit;
+#endif
+
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DE -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_E %s
+// CHECK_E: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_E: ![[MODULE]] = !{!"-framework", !"SomeKitCore"}
+#ifdef E
+@import OtherKit;
+#endif
+
+// RUN: %clang_cc1 -emit-llvm -o - -fmodules-cache-path=%t -DF -fmodules -fimplicit-module-maps -F %S/Inputs/exportas-link %s | FileCheck --check-prefix=CHECK_F %s
+// CHECK_F: !llvm.linker.options = !{![[MODULE:[0-9]+]]}
+// CHECK_F: ![[MODULE]] = !{!"-framework", !"SomeKit"}
+#ifdef F
+@import OtherKit;
+#endif