clang/test/Modules/merge-vtable-codegen.cpp

   1 // RUN: rm -rf %t
   2
   3 // First, build two modules that both re-export the same header.
   4 // RUN: %clang_cc1 -x c++ -std=c++11 -fmodules -fimplicit-module-maps -fmodule-name=b -o %t/b.pcm \
   5 // RUN:     -emit-module %S/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap \
   6 // RUN:     -I %S/Inputs/merge-vtable-codegen
   7 // RUN: %clang_cc1 -x c++ -std=c++11 -fmodules -fimplicit-module-maps -fmodule-name=c -o %t/c.pcm \
   8 // RUN:     -emit-module %S/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap \
   9 // RUN:     -I %S/Inputs/merge-vtable-codegen
  10
  11 // Use the two modules in a single compile.
  12 // RUN: %clang_cc1 -x c++ -std=c++11 -fmodules -fimplicit-module-maps -fmodule-file=%t/b.pcm -fmodule-file=%t/c.pcm \
  13 // RUN:     -fmodule-map-file=%S/Inputs/merge-vtable-codegen/merge-vtable-codegen.modulemap \
  14 // RUN:     -emit-llvm -o %t/test.o %s
  15
  16 // Note that order is important:
  17 // Module 'c' just reexports A, while module 'b' defines a method that uses a
  18 // virtual method of A.
  19 #include "Inputs/merge-vtable-codegen/c.h"
  20 #include "Inputs/merge-vtable-codegen/b.h"
  21
  22 void t() {
  23   b(nullptr);
  24 }