mirror of https://github.com/rust-lang/rust
31 lines
747 B
Rust
31 lines
747 B
Rust
//@ run-pass
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//@ compile-flags: -Z thinlto -C codegen-units=8 -O
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//@ ignore-emscripten can't inspect instructions on emscripten
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// We want to assert here that ThinLTO will inline across codegen units. There's
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// not really a great way to do that in general so we sort of hack around it by
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// praying two functions go into separate codegen units and then assuming that
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// if inlining *doesn't* happen the first byte of the functions will differ.
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pub fn foo() -> u32 {
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bar::bar()
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}
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mod bar {
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pub fn bar() -> u32 {
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3
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}
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}
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fn main() {
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println!("{} {}", foo(), bar::bar());
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unsafe {
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let foo = foo as usize as *const u8;
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let bar = bar::bar as usize as *const u8;
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assert_eq!(*foo, *bar);
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}
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}
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