mirror of https://github.com/rust-lang/rust.git
20 lines
913 B
Rust
20 lines
913 B
Rust
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// This test checks the -Zremark-dir flag, which writes LLVM
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// optimization remarks to the YAML format. When using PGO (Profile
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// Guided Optimization), the Hotness attribute should be included in
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// the output remark files.
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// See https://github.com/rust-lang/rust/pull/114439
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//@ needs-profiler-support
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//@ ignore-cross-compile
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use run_make_support::{run, llvm_profdata, rustc, invalid_utf8_contains};
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fn main() {
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rustc().profile_generate("profdata").opt().input("foo.rs").output("foo").run();
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run("foo");
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llvm_profdata().merge().output("merged.profdata").input("profdata/default_15907418011457399462_0.profraw").run();
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rustc().profile_use("merged.profdata").opt().input("foo.rs").arg("-Cremark=all").arg("-Zremark-dir=profiles").run();
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// Check that PGO hotness is included in the remark files
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invalid_utf8_contains("profiles/foo.cba44757bc0621b9-cgu.0.opt.opt.yaml", "Hotness");
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}
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