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359bfa901b9d8eddbed7b88b6716dbb77b7bfb95
rust/tests/incremental/lto.rs

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[AUTO_GENERATED] Migrate compiletest to use `ui_test`-style `//@` directives
2024-02-22 12:10:29 +00:00
//@ no-prefer-dynamic
//@ revisions:rpass1 rpass2
//@ compile-flags: -C lto
rustc: Implement incremental "fat" LTO Currently the compiler will produce an error if both incremental compilation and full fat LTO is requested. With recent changes and the advent of incremental ThinLTO, however, all the hard work is already done for us and it's actually not too bad to remove this error! This commit updates the codegen backend to allow incremental full fat LTO. The semantics are that the input modules to LTO are all produce incrementally, but the final LTO step is always done unconditionally regardless of whether the inputs changed or not. The only real incremental win we could have here is if zero of the input modules changed, but that's so rare it's unlikely to be worthwhile to implement such a code path. cc #57968 cc rust-lang/cargo#6643
2019-02-11 07:46:04 -08:00
mod x {
pub struct X {
x: u32, y: u32,
}
#[cfg(rpass1)]
fn make() -> X {
X { x: 22, y: 0 }
}
#[cfg(rpass2)]
fn make() -> X {
X { x: 11, y: 11 }
}
pub fn new() -> X {
make()
}
pub fn sum(x: &X) -> u32 {
x.x + x.y
}
}
mod y {
use x;
pub fn assert_sum() -> bool {
let x = x::new();
x::sum(&x) == 22
}
}
pub fn main() {
y::assert_sum();
}
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