28 lines
1.2 KiB
Rust
28 lines
1.2 KiB
Rust
// 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
|
|
}
|