| namespace { |
| struct ForcePALinking { |
| ForcePALinking() { |
| // We must reference the passes in such a way that compilers will not |
| // delete it all as dead code, even with whole program optimization, |
| // yet is effectively a NO-OP. As the compiler isn't smart enough |
| // to know that getenv() never returns -1, this will do the job. |
| if (std::getenv("bar") != (char*) -1) |
| return; |
| |
| (void)new EntryPointAnalysis(); |
| (void)new llvm::PoolAllocate(); |
| (void)new llvm::PoolAllocateGroup(); |
| } |
| } ForcePALinking; // Force link by creating a global definition. |
| } |