68 lines
2.0 KiB
Rust
68 lines
2.0 KiB
Rust
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// This test case verifies that we successfully complete an LTO build with PGO
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// using the embedded bitcode.
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// It also ensures that the generated IR correctly includes the call results.
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//@ needs-profiler-runtime
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//@ ignore-cross-compile
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use std::path::Path;
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use run_make_support::{
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has_extension, has_prefix, llvm_filecheck, llvm_profdata, rfs, run, rustc, shallow_find_files,
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};
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fn run_test(cg_units: usize) {
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let path_prof_data_dir = Path::new("prof_data_dir");
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if path_prof_data_dir.exists() {
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rfs::remove_dir_all(path_prof_data_dir);
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}
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rfs::create_dir_all(&path_prof_data_dir);
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let path_merged_profdata = path_prof_data_dir.join("merged.profdata");
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rustc().input("opaque.rs").codegen_units(1).run();
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rustc()
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.input("interesting.rs")
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.profile_generate(&path_prof_data_dir)
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.opt()
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.crate_type("lib,cdylib")
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.codegen_units(cg_units)
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.run();
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rustc()
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.input("main.rs")
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.arg("-Clto=thin")
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.opt()
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.codegen_units(cg_units)
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.profile_generate(&path_prof_data_dir)
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.opt()
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.run();
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run("main");
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llvm_profdata().merge().output(&path_merged_profdata).input(path_prof_data_dir).run();
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rustc()
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.input("interesting.rs")
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.profile_use(&path_merged_profdata)
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.opt()
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.crate_type("lib,cdylib")
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.codegen_units(cg_units)
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.emit("link")
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.run();
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rustc()
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.input("main.rs")
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.arg("-Clto=thin")
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.opt()
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.codegen_units(cg_units)
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.profile_use(&path_merged_profdata)
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.emit("llvm-ir,link")
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.opt()
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.run();
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let files = shallow_find_files(".", |path| {
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has_prefix(path, "main.interesting.interesting") && has_extension(path, "ll")
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});
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assert_eq!(files.len(), 1);
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let llvm_ir = &files[0];
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llvm_filecheck().patterns("interesting.rs").stdin_buf(rfs::read(llvm_ir)).run();
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}
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fn main() {
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run_test(1);
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run_test(16);
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}
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