| // LLVM's profiling instrumentation adds a few symbols that are used by the profiler runtime. |
| // Since these show up as globals in the LLVM IR, the compiler generates dllimport-related |
| // __imp_ stubs for them. This can lead to linker errors because the instrumentation |
| // symbols have weak linkage or are in a comdat section, but the __imp_ stubs aren't. |
| // Since profiler-related symbols were excluded from stub-generation in #59812, this has |
| // been fixed, and this test checks that the llvm profile symbol appear, but without the |
| // anomalous __imp_ stubs. |
| // See https://github.com/rust-lang/rust/pull/59812 |
| |
| use run_make_support::{cwd, rfs, rustc}; |
| |
| fn main() { |
| rustc() |
| .input("test.rs") |
| .emit("llvm-ir") |
| .opt() |
| .codegen_units(1) |
| .profile_generate(cwd()) |
| .arg("-Zno-profiler-runtime") |
| .run(); |
| let out = rfs::read_to_string("test.ll"); |
| // We expect symbols starting with "__llvm_profile_". |
| assert!(out.contains("__llvm_profile_")); |
| // We do NOT expect the "__imp_" version of these symbols. |
| assert!(!out.contains("__imp___llvm_profile_")); // 64 bit |
| assert!(!out.contains("__imp____llvm_profile_")); // 32 bit |
| } |
