Reland r230314 "Fix codegen for virtual methods that are (re-) exported from multiple modules."

This reverts the revert from commit r230406.

The changes in r230445 and r230446 make the test pass on Windows now.

llvm-svn: 230448

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Modules/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap b/clang/test/Modules/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap
new file mode 100644
index 00000000000..1edaa07101f
--- /dev/null
+++ b/clang/test/Modules/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap
@@ -0,0 +1,11 @@
+module "a" {
+  textual header "a.h"
+}
+
+module "b" {
+  header "b.h"
+}
+
+module "c" {
+  header "c.h"
+}