mirror of
https://github.com/rust-lang/rust
synced 2024-11-05 20:45:15 +00:00
754f488d46
As experimentation in 115242 has shown looks better than `coldcc`. And *don't* use a different convention for cold on Windows, because that actually ends up making things worse. cc tracking issue 97544
27 lines
769 B
Rust
27 lines
769 B
Rust
// revisions: NORMAL WINDOWS
|
|
// compile-flags: -C no-prepopulate-passes
|
|
//[NORMAL] ignore-windows
|
|
//[WINDOWS] only-windows
|
|
//[WINDOWS] only-x86_64
|
|
|
|
#![crate_type = "lib"]
|
|
#![feature(rust_cold_cc)]
|
|
|
|
// wasm marks the definition as `dso_local`, so allow that as optional.
|
|
|
|
// NORMAL: define{{( dso_local)?}} preserve_mostcc void @this_should_never_happen(i16
|
|
// NORMAL: call preserve_mostcc void @this_should_never_happen(i16
|
|
|
|
// See the comment in `Target::adjust_abi` for why this differs
|
|
|
|
// WINDOWS: define void @this_should_never_happen(i16
|
|
// WINDOWS: call void @this_should_never_happen(i16
|
|
|
|
#[no_mangle]
|
|
pub extern "rust-cold" fn this_should_never_happen(x: u16) {}
|
|
|
|
pub fn do_things(x: u16) {
|
|
if x == 12345 {
|
|
this_should_never_happen(54321);
|
|
}
|
|
}
|