// `no_builtins` is an attribute related to LLVM's optimizations. In order to ensure that it has an // effect on link-time optimizations (LTO), it should be added to function declarations in a crate. // This test uses the `llvm-filecheck` tool to determine that this attribute is successfully // being added to these function declarations. // See https://github.com/rust-lang/rust/pull/113716 use run_make_support::{llvm_filecheck, rfs, rustc}; fn main() { rustc().input("no_builtins.rs").emit("link").run(); rustc().input("main.rs").emit("llvm-ir").run(); llvm_filecheck().patterns("filecheck.main.txt").stdin_buf(rfs::read("main.ll")).run(); }