mirror of https://github.com/rust-lang/rust
63 lines
2.0 KiB
Rust
63 lines
2.0 KiB
Rust
// This test checks that cross-language inlining actually works by checking
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// the generated machine code.
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// See https://github.com/rust-lang/rust/pull/57514
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//@ needs-force-clang-based-tests
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// NOTE(#126180): This test only runs on `x86_64-gnu-debug`, because that CI job sets
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// RUSTBUILD_FORCE_CLANG_BASED_TESTS and only runs tests which contain "clang" in their
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// name.
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use run_make_support::{clang, env_var, llvm_ar, llvm_objdump, rustc, static_lib_name};
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fn main() {
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rustc()
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.linker_plugin_lto("on")
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.output(static_lib_name("rustlib-xlto"))
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.opt_level("2")
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.codegen_units(1)
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.input("rustlib.rs")
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.run();
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clang()
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.lto("thin")
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.use_ld("lld")
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.arg("-lrustlib-xlto")
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.out_exe("cmain")
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.input("cmain.c")
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.arg("-O3")
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.run();
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// Make sure we don't find a call instruction to the function we expect to
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// always be inlined.
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llvm_objdump()
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.disassemble()
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.input("cmain")
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.run()
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.assert_stdout_not_contains_regex("call.*rust_always_inlined");
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// As a sanity check, make sure we do find a call instruction to a
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// non-inlined function
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llvm_objdump()
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.disassemble()
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.input("cmain")
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.run()
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.assert_stdout_contains_regex("call.*rust_never_inlined");
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clang().input("clib.c").lto("thin").arg("-c").out_exe("clib.o").arg("-O2").run();
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llvm_ar().obj_to_ar().output_input(static_lib_name("xyz"), "clib.o").run();
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rustc()
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.linker_plugin_lto("on")
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.opt_level("2")
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.linker(&env_var("CLANG"))
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.link_arg("-fuse-ld=lld")
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.input("main.rs")
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.output("rsmain")
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.run();
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llvm_objdump()
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.disassemble()
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.input("rsmain")
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.run()
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.assert_stdout_not_contains_regex("call.*c_always_inlined");
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llvm_objdump()
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.disassemble()
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.input("rsmain")
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.run()
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.assert_stdout_contains_regex("call.*c_never_inlined");
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}
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