text: // Test this without pch.
  // RUN: %clang_cc1 %s -include %s.h -emit-llvm37 -o %t.withoutpch.ll
  
  // Test with pch.
  // RUN: %clang_cc1 %s.h -emit-pch -o %t.pch
  // RUN: %clang_cc1 %s -include-pch %t.pch -emit-llvm37 -o %t.withpch.ll
  // RUN: diff %t.withoutpch.ll %t.withpch.ll
  