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Auto merge of #128352 - Oneirical:daLTOnist-vision, r=jieyouxu
Migrate `cross-lang-lto` `run-make` test to rmake Part of #121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html). Please try: try-job: x86_64-msvc try-job: i686-mingw try-job: x86_64-mingw try-job: armhf-gnu try-job: test-various try-job: aarch64-apple try-job: x86_64-gnu-llvm-18
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Original file line number | Diff line number | Diff line change |
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// This test checks that the object files we generate are actually | ||
// LLVM bitcode files (as used by linker LTO plugins) when compiling with | ||
// -Clinker-plugin-lto. | ||
// See https://github.com/rust-lang/rust/pull/50000 | ||
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#![feature(path_file_prefix)] | ||
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use std::path::PathBuf; | ||
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use run_make_support::{ | ||
cwd, has_extension, has_prefix, llvm_ar, llvm_bcanalyzer, path, rfs, rust_lib_name, rustc, | ||
shallow_find_files, static_lib_name, | ||
}; | ||
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fn main() { | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("staticlib"), | ||
output: path(static_lib_name("liblib")), | ||
lto: None, | ||
emit_obj: false, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("staticlib"), | ||
output: path(static_lib_name("liblib-fat-lto")), | ||
lto: Some("fat"), | ||
emit_obj: false, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("staticlib"), | ||
output: path(static_lib_name("liblib-thin-lto")), | ||
lto: Some("thin"), | ||
emit_obj: false, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("rlib"), | ||
output: path(rust_lib_name("liblib")), | ||
lto: None, | ||
emit_obj: false, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("cdylib"), | ||
output: path("cdylib.o"), | ||
lto: None, | ||
emit_obj: true, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("lib.rs"), | ||
crate_type: Some("dylib"), | ||
output: path("rdylib.o"), | ||
lto: None, | ||
emit_obj: true, | ||
}); | ||
check_bitcode(LibBuild { | ||
source: path("main.rs"), | ||
crate_type: None, | ||
output: path("exe.o"), | ||
lto: None, | ||
emit_obj: true, | ||
}); | ||
} | ||
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#[track_caller] | ||
fn check_bitcode(instructions: LibBuild) { | ||
let mut rustc = rustc(); | ||
rustc | ||
.input(instructions.source) | ||
.output(&instructions.output) | ||
.opt_level("2") | ||
.codegen_units(1) | ||
.arg("-Clinker-plugin-lto"); | ||
if instructions.emit_obj { | ||
rustc.emit("obj"); | ||
} | ||
if let Some(crate_type) = instructions.crate_type { | ||
rustc.crate_type(crate_type); | ||
} | ||
if let Some(lto) = instructions.lto { | ||
rustc.arg(format!("-Clto={lto}")); | ||
} | ||
rustc.run(); | ||
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if instructions.output.extension().unwrap() != "o" { | ||
// Remove all potential leftover object files, then turn the output into an object file. | ||
for object in shallow_find_files(cwd(), |path| has_extension(path, "o")) { | ||
rfs::remove_file(object); | ||
} | ||
llvm_ar().extract().arg(&instructions.output).run(); | ||
} | ||
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for object in shallow_find_files(cwd(), |path| { | ||
has_prefix(path, instructions.output.file_prefix().unwrap().to_str().unwrap()) | ||
&& has_extension(path, "o") | ||
}) { | ||
// All generated object files should be LLVM bitcode files - this will fail otherwise. | ||
llvm_bcanalyzer().input(object).run(); | ||
} | ||
} | ||
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struct LibBuild { | ||
source: PathBuf, | ||
crate_type: Option<&'static str>, | ||
output: PathBuf, | ||
lto: Option<&'static str>, | ||
emit_obj: bool, | ||
} |